Consulta: subjectFacets:"Macrofauna"
Registros recuperados: 47
Data/hora: 04/06/2024 08:58:32

DIVERSIDAD DE MACROINVERTEBRADOS ASOCIADOS A ARRECIFES DE PHRAGMATOPOMA MOERCHI KINBERG, 1867 (POLYCHAETA: SABELLARIIDAE) EN EL INTERMAREAL ROCOSO DE COCHOLGÜE, CHILE
Provedor de dados: 72
Autores: Sepúlveda,Roger D.; Moreno,Rodrigo A.; Carrasco,Franklin D.
Las agregaciones monoespecíficas son comunes en el intermareal rocoso. Una de estas especies gregarias es el poliqueto tubícola Phragmatopoma moerchi, el cual construye arrecifes de tamaño variable en el intermareal rocoso. Estos arrecifes proveen de refugio y alimento a muchas especies de invertebrados. El objetivo de este trabajo es caracterizar la macrofauna asociada a estos arrecifes y determinar cómo afecta el tamaño de éstos a algunos parámetros comunitarios. Nueve muestras fueron extraídas del intermareal de Cocholgüe (36° 35'S), entre octubre y diciembre de 2001. En laboratorio, las muestras fueron pesadas y la fauna asociada fue agrupada por taxa y determinada, cuando fue posible, al nivel taxonómico más bajo posible. Luego se obtuvieron los...
Tipo: Journal article
Palavras-chave: Intermareal rocoso; Macrofauna; Biodiversidad; Polychaeta; Phragmatopoma moerchi; Arrecifes.
Ano: 2003
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382003000100007

Biodiversidade de coleópteros associados à produção de bovinos em sistema silvipastoril e em sistema de pastejo convencional na região norte de Mato Grosso, Brasil.
Provedor de dados: 14
Autores: LOPES, L. B.; PITTA, R. M.; ECKSTEIN, C.; PEDREIRA, B. C. e.
Entre os principais produtores de carne bovina do mundo, o Brasil se destaca pela produção pecuária baseada em pastos sem grande dependência de grãos. Além disso, a adoção de sistemas integrados vem aumentando nas fazendas brasileiras nos últimos anos, alcançando números expressivos como 11,5 milhões de hectares cobertos por algum tipo de integração, incluindo modelos silvipastoris. Considerando a importância da pecuária para a economia nacional e o potencial de sustentabilidade das estratégias de integração, este estudo teve como objetivo avaliar se a fauna composta por besouros coprófagos poderia se alterar no sistema silvipastoril em comparação com pastagens convencionais, pois esses insetos são importantes para o controle biológico de parasitas de...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Sistemas integrados; Macrofauna; Terminalia Amazônia; Pecuária; Parasitoses.
Ano: 2018
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1100524

Curumim e Cunhantã ajudando a biodiversidade do solo.
Provedor de dados: 14
Projeto BiosBrasil. Autores: Agno N. S. Acioli, Alcides Moino Jr., Elaine Cristina Cardoso Fidalgo, Fatima M. S. Moreira, Hiroshi Noda, Ieda Amaral, José Oswaldo Siqueira, José Wellington de Morais, Júlio N. C. Louzada, Juvenil Cares, Ludwig H. Pfenning, Mauricio Rizzato Coelho, Maria da Glória B. F. Mesquita, Neliton Marques da Silva, Reginaldo Constatino, Ronald Zanetti, Sandra Noda, Sidney Luiz Stürmer, Sonia Senna Alfaia.
Tipo: Folhetos
Palavras-chave: Macrofauna; Mesofauna; Nematoides; Fungos; Bactérias; Projeto BiosBrasil.
Ano: 2009
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/576860

The vesicomyid bivalve habitat at cold seeps supports heterogeneous and dynamic macrofaunal assemblages
Provedor de dados: 5
Autores: Guillon, Erwan; Menot, Lenaick; Decker, Carole; Krylova, Elena; Olu, Karine.
The high biodiversity found at cold seeps, despite elevated concentrations of methane and hydrogen sulfide, is attributed to multiple sources of habitat heterogeneity. In addition to geological and geochemical processes, biogenic habitats formed by large symbiont-bearing taxa, such as bivalves and siboglinid tubeworms, or by microbial mats drive the biodiversity of small-sized fauna. However, because these habitat-forming species also depend on geochemical gradients, the respective influence of abiotic and biotic factors in structuring associated macrofaunal communities is often unresolved. The giant pockmark Regab located at 3200 m depth on the Congo margin is characterized by different fluid-flow regimes, providing a mosaic of the most common biogenic...
Tipo: Text
Palavras-chave: Cold-seep; Macrofauna; Diversity; Dynamics; Vesicomyid clams; Gulf of Guinea.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00361/47210/47165.pdf

Spatial heterogeneity of macrofaunal communities in and near a giant pockmark area in the deep Gulf of Guinea
Provedor de dados: 5
Autores: Menot, Lenaick; Galeron, Joelle; Olu, Karine; Caprais, Jean-claude; Crassous, Philippe; Khripounoff, Alexis; Sibuet, Myriam.
The structure and familial-level composition of macrofaunal communities were examined within and at distance from the giant pockmark Regab in the Southern Gulf of Guinea, at 3200 m depth. The two main questions addressed in this study were (i) does habitat partitioning by large symbiont-bearing taxa. influence macrofaunal assemblages and their environment? and (ii) to what extent does the chemosynthesis-based ecosystem influence the structure and the composition of nearby macrobenthic communities? Along two radials, at sites from 250 to 1000 m away from the active centre of the cold seep, the abundance and composition of the macrofauna were typical of a deep-sea community at that depth. Except for a few cores sampled in or near dead vesicomyid fields at...
Tipo: Text
Palavras-chave: Cold seep; Diversity; Gulf of Guinea; Habitat heterogeneity; Macrofauna; Open slope; Siboglinid tubeworms; Vesicomyid clams.
Ano: 2010
URL: https://archimer.ifremer.fr/doc/00002/11282/8099.pdf

Habitat heterogeneity influences cold-seep macrofaunal communities within and among seeps along the Norwegian margin. Part 1: macrofaunal community structure
Provedor de dados: 5
Autores: Decker, Carole; Morineaux, Marie; Van Gaever, Saskia; Caprais, Jean-claude; Lichtschlag, Anna; Gauthier, Olivier; Andersen, Ann C.; Olu, Karine.
Håkon Mosby mud volcano (HMMV) is one of the most active and most studied seep sites in European waters. Many authors have described its thermal activity, dynamic of mud flows, and geochemical and microbial processes. It is characterised by a concentric zonation of successive biogenic habitats related to an activity and geochemical gradient from its centre to its periphery. Around the central area covered by mud flows, white and grey microbial mats occur among areas of bare sediment, whereas siboglinid tubeworm fields of Sclerolinum contortum and/or Oligobrachia haakonmosbiensis colonise the peripheral areas. The meiofaunal community is known to be structured among habitats, but the macrofauna has rarely been investigated and has never been sampled in...
Tipo: Text
Palavras-chave: Cold-seep; Community structure; Macrofauna; Norwegian margin; Polychaeta.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00074/18517/16130.pdf

Can molluscan assemblages give insights into Holocene environmental changes other than sea level rise? A case study from a macrotidal bay (Marennes-Oleron, France)
Provedor de dados: 5
Autores: Poirier, Clement; Sauriau, Pierre-guy; Chaumillon, Eric; Allard, Jonathan.
During the Late Holocene, the rate of sea level rise decreased and climate changes, hydrodynamic processes or anthropogenic impacts became predominant parameters governing the sedimentary infill of estuarine environments. The aim of this study is to describe the response of past benthic mollusc communities to these forcing factors. Mollusc skeletal remains were sampled from three 8000, 5500 and 2600 year-long sedimentary records in the Marennes-Oleron Bay (Atlantic Coast, France), where environmental changes have previously been identified thanks to a combination of very high resolution seismic profiles and sedimentological data. Molluscan assemblages successfully record environmental changes, even at the smallest temporal scale. They provide relevant...
Tipo: Text
Palavras-chave: Atlantic Coast; Sediment core; Palaeoenvironment; Death assemblage; Macrofauna.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6833.pdf

Influence of the mode of macrofauna-mediated bioturbation on the vertical distribution of living benthic foraminifera: First insight from axial tomodensitometry
Provedor de dados: 5
Autores: Bouchet, Vincent; Sauriau, Pierre-guy; Debenay, J.p.; Mermillod-blondin, F; Schmidt, S; Amiard, J.c.; Dupas, B.
We investigated the influence of bioturbation by macrofauna on the vertical distribution of living (stained) benthic foraminifera in marine intertidal sediments. We investigated the links between macrofaunal bioturbation and foraminiferal distribution, by sampling from stations situated on a gradient of perturbation by oyster-farming, which has a major effect on benthic faunal assemblages. Sediment cores were collected on the French Atlantic coast, from three intertidal stations: an oyster farm, an area without oysters but affected by oyster biodeposits, and a control station. Axial tomodensitometry (CT-scan) was used for three-dimensional visualization and two-dimensional analysis of the cores. Biogenic structure volumes were quantified and compared...
Tipo: Text
Palavras-chave: Macrofauna; Living foraminifera; Interspecific interaction; CT scan; Bioturbating modes; Biogenic structures.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6146.pdf

Activity and composition of the benthic fauna in the Whittard Canyon and the adjacent continental slope (NE Atlantic)
Provedor de dados: 5
Autores: Duineveld, Gérard; Lavaleye, Marc; Berghuis, Eilke; De Wilde, Peter.
We compared the sediment and its community on the Celtic continental slope (Goban Spur) with those in a branch of the nearby Whittard Canyon in search for evidence of canyon mediated transport of (labile) organic matter. We studied the megabenthos and macrobenthos biomass and taxonomic composition, measured in situ sediment community oxygen consumption and determined sediment concentrations of particulate organic carbon, phytopigments, and nucleic acids. While the sediment community and activity on the canyon fan was similar to that on the abyssal station near Goban Spur, the sediment within the canyon had relatively enhanced sediment community oxygen consumption rates and higher levels of phytopigments. particulate organic carbon and nucleic acids,...
Tipo: Text
Palavras-chave: Zone abyssale; Canyon; Macrofaune; Métabolisme; Pigments végétaux; Deep-sea; Canyon; Macrofauna; Metabolism; Phytopigments.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/00323/43370/42840.pdf

Patterns of Macrofaunal Biodiversity Across the Clarion-Clipperton Zone: An Area Targeted for Seabed Mining
Provedor de dados: 5
Autores: Washburn, Travis W.; Menot, Lenaick; Bonifácio, Paulo; Pape, Ellen; Błażewicz, Magdalena; Bribiesca-contreras, Guadalupe; Dahlgren, Thomas G.; Fukushima, Tomohiko; Glover, Adrian G.; Ju, Se Jong; Kaiser, Stefanie; Yu, Ok Hwan; Smith, Craig R.
Macrofauna are an abundant and diverse component of abyssal benthic communities and are likely to be heavily impacted by polymetallic nodule mining in the Clarion-Clipperton Zone (CCZ). In 2012, the International Seabed Authority (ISA) used available benthic biodiversity data and environmental proxies to establish nine no-mining areas, called Areas of Particular Environmental Interest (APEIs) in the CCZ. The APEIs were intended as a representative system of protected areas to safeguard biodiversity and ecosystem function across the region from mining impacts. Since 2012, a number of research programs have collected additional ecological baseline data from the CCZ. We assemble and analyze macrofaunal biodiversity data sets from eight studies, focusing on...
Tipo: Text
Palavras-chave: Macrofauna; Deep-sea mining; Biodiversity; Polychaeta; Manganese nodules; POC flux; Species ranges; Areas of particular environmental interest.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00687/79937/82834.pdf

The community structure of deep-sea macrofauna associated with polymetallic nodules in the eastern part of the Clarion-Clipperton fracture zone
Provedor de dados: 5
Autores: De Smet, Bart; Pape, Ellen; Riehl, Torben; Bonifacio, Paulo; Colson, Liesbet; Vanreusel, Ann.
Deep-sea areas characterized by the presence of polymetallic nodules are getting increased attention due to their potential commercial and strategic interest for metals such as nickel, copper and cobalt. The polymetallic nodules occur in areas beyond national jurisdiction, regulated by the International Seabed Authority (ISA). Under exploration contracts, contractors have the obligation to determine the environmental baseline in the exploration areas. Despite a large number of scientific cruises to the central east Pacific Ocean, few published data on the macrofaunal biodiversity and community structure are available for the abyssal fields of the Clarion-Clipperton Fracture Zone (CCFZ). This study focused on the macrofaunal abundance, diversity and...
Tipo: Text
Palavras-chave: Polymetallic nodules; Macrofauna; Deep sea; CCFZ; Biodiversity; Community structure; Deep-sea mining.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00378/48885/49311.pdf

Les carbonates associés à la macrofaune des sables fins littoraux en Méditerranée nord-occidentale
Provedor de dados: 5
Autores: Masse, Hl.
The carbonates associated with the macrofauna of shallow fine sands have been evaluated at six stations located at five different sites on the French Mediterranean coast. The carbonate content of forty species or zoological groups has been estimated. At each station the mean calcimass has been calculated during a year-long cycle, showing the participation of the different zoological groups, mainly molluscs and echinoderms. The comparison of calcimass and associated biomass shows that CaCO3/AFDW ratio fluctuates between 1.6 to 19.3. These values are similar to those obtained in some rocky bottom communities. Calcimass values usually largely exceed biomass ones; therefore the carbon linked to carbonates cannot be excluded from the carbon balance including...
Tipo: Text
Palavras-chave: Carbonates; Macrofaune; Sables fins littoraux tempérés; Carbonates; Macrofauna; Temperate shallow fine sands.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00325/43604/43923.pdf

Variation in structure and biomass of the benthic communities at three contrasting sites in the tropical Northeast Atlantic
Provedor de dados: 5
Autores: Galeron, Joelle; Sibuet, Myriam; Mahaut, Ml; Dinet, A.
Three major size classes of the benthic metazoan communities (megafauna, macrofauna and meiofauna) were investigated simultaneously at 3 sites in the tropical Northeast Atlantic. The sites varied in their level of surface primary productivity (eutrophic, mesotrophic and oligotrophic). Results for 3 cruises in 3 seasons (Eumeli 2, winter 1991; Eumeli 3, autumn 1991; Eumeli 4, spring 1992) are given for each size class in terms of taxonomic composition, density and biomass. The benthic communities did not exhibit evidence of seasonal variation, but there were substantial differences in the quantitative structure of the metazoan communities between the 3 sites. Total metazoan density and biomass, as well as density and biomass of each size class, decreased...
Tipo: Text
Palavras-chave: Deep sea; Tropical Atlantic; Meiofauna; Macrofauna; Megafauna; Taxonomic composition; Density; Biomass; Environmental conditions.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/00000/10519/7602.pdf

Effects of macroalgal accumulations on the variability in zoobenthos of high-energy macrotidal sandy beaches
Provedor de dados: 5
Autores: Quillien, Nolwenn; Nordstrom, Marie C.; Gauthier, Olivier; Bonsdorff, Erik; Paulet, Yves-marie; Grall, Jacques.
Sandy beaches, forming the most widespread coastal habitat in the world, are threatened by the effects of increasing anthropogenic pressure in the context of global change, including the increased occurrence of green tides composed of free-living Ulva spp. Sandy beaches are also highly dynamic ecosystems that support numerous essential ecological functions and contain a distinctive biodiversity, but their precise functioning and natural variability (i.e. the disentangling of biological and physical influences) remain under-studied. Our study aimed at determining the effects of space, time, and environmental variables on the natural variability of macrofaunal community structure and at specifically determining the effects of macroalgal accumulations on the...
Tipo: Text
Palavras-chave: Macrotidal sandy beach; Macrofauna; Green tides; Space-time analysis; Beta-diversity.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00260/37078/73131.pdf

Endogenous versus exogenous factors: What matters for vent mussel communities?
Provedor de dados: 5
Autores: Sarrazin, Jozee; Portail, Marie; Legrand, E.; Cathalot, Cecile; Laes, Agathe; Lahaye, Noe; Sarradin, Pierre-marie; Husson, Berengere.
The factors influencing the structure of hydrothermal communities are not necessarily similar across geographical regions and vent fields. In the present study, we explore the role of environmental conditions on vent community structure at local and regional spatial scales, focusing on the assemblages dominated by the engineer species Bathymodiolus azoricus. Their presence in several vent fields on the northern Mid-Atlantic Ridge (MAR) represents a unique opportunity to compare their associated fauna and to better understand large-scale biodiversity patterns. Two types of factors were considered: exogenous ones such as the presence of biogeographical barriers, depth, and distance between sites, and those linked to the intrinsic characteristics of each...
Tipo: Text
Palavras-chave: Intra-field variability; Inter-field variability; Hydrothermal fauna; Abiotic factors; Diversity measures; Macrofauna; Meiofauna; Environmental drivers; Community structure; Habitats.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00615/72661/71671.pdf

Benthos distribution modelling and its relevance for marine ecosystem management
Provedor de dados: 5
Autores: Reiss, Henning; Birchenough, Silvana; Borja, Angel; Buhl-mortensen, Lene; Craeymeersch, Johan; Dannheim, Jennifer; Darr, Alexander; Galparsoro, Ibon; Gogina, Mayya; Neumann, Hermann; Populus, Jacques; Rengstorf, Anna M.; Valle, Mireia; Van Hoey, Gert; Zettler, Michael L.; Degraer, Steven.
Marine benthic ecosystems are difficult to monitor and assess, which is in contrast to modern ecosystem-based management requiring detailed information at all important ecological and anthropogenic impact levels. Ecosystem management needs to ensure a sustainable exploitation of marine resources as well as the protection of sensitive habitats, taking account of potential multiple-use conﬂicts and impacts over large spatial scales. The urgent need for large-scale spatial data on benthic species and communities resulted in an increasing application of distribution modelling (DM). The use of DM techniques enables to employ full spatial coverage data of environmental variables to predict benthic spatial distribution patterns. Especially, statistical DMs have...
Tipo: Text
Palavras-chave: Ecosystem approach; Environmental monitoring; Habitat suitability modelling; Macrofauna; Mapping; Marine spatial planning (MSP); Predictive modelling; Species distribution modelling.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00203/31405/29915.pdf

The pilot project "Patterns and processes of the ecosystems of the northern Mid-Atlantic": aims, strategy and status
Provedor de dados: 5
Autores: Bergstad, Oa; Godo, Or.
The Mid-Atlantic Ridge is the target of an emerging international ecosystem study under the Census of marine life programme. This pilot project shall gather new knowledge on biodiversity, distribution patterns, and ecological processes, and the overriding aim is "to describe and understand the patterns of distribution, abundance and trophic relationships of the organisms inhabiting the mid-oceanic North Atlantic, and identify and model ecological processes that cause variability in these patterns". The project will focus on pelagic, benthopelagic and epibenthic macrofauna, and analyse distribution and abundance patterns in relation to the abiotic and biotic environment, as well as trophic relationships and life history strategies. Fish, crustaceans,...
Tipo: Text
Palavras-chave: Médio-atlantique; Ride; Macrofaune; Biodiversité; Mid-atlantic; Ridge; Macrofauna; Biodiversity.
Ano: 2002
URL: http://archimer.ifremer.fr/doc/00322/43305/43041.pdf

Modelling the effects of macrofauna on sediment transport and bed elevation: Application over a cross-shore mudflat profile and model validation
Provedor de dados: 5
Autores: Orvain, Francis; Le Hir, Pierre; Sauriau, Pierre-guy; Lefebvre, Sebastien.
Tipo: Text
Palavras-chave: Modelling; Sediment dynamics; Erodability; Bioturbation; Macrofauna; Biota; Sediment stability.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00079/19055/18610.pdf

Food limitation of juvenile marine fish in a coastal and estuarine nursery
Provedor de dados: 5
Autores: Saulnier, E.; Le Bris, H.; Tableau, Adrien; Dauvin, J.c.; Brind'Amour, Anik.
Despite their importance for species conservation and sound management of exploited living resources, the density-dependent mechanisms that regulate wild populations are among the least understood process in ecology. In many marine fish species, there is strong evidence that regulation occurs at the juvenile stage, when individuals concentrate in spatially restricted nurseries. However, little is known about the underlying mechanisms. Whether competition for food resources determines fish growth and survival is particularly controversial. We investigated whether food supply may have limited juvenile fish production (integrating both growth and survival) in a coastal and estuarine nursery in western Europe. Using a recent bioenergetics-based approach, we...
Tipo: Text
Palavras-chave: Food limitation; Nursery; Juvenile fish; Predatory invertebrates; Macrofauna; English channel.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00611/72282/71080.pdf

Colonization patterns along the equatorial West African margin: Implications for functioning and diversity maintenance of bathyal and abyssal communities
Provedor de dados: 5
Autores: Menot, Lenaick; Crassous, Philippe; Desbruyeres, Daniel; Galeron, Joelle; Khripounoff, Alexis; Sibuet, M.
In the framework of the deep-sea environmental programme BIOZAIRE (Ifremer-Total), colonization trays were deployed for 283-433 days at three sites along the equatorial West African margin: ZA at 1300-m depth, ZC at 4000-m depth far from the Congo canyon and ZD at 4000-m depth close to the Congo canyon. The experiments aimed at determining the influence of depth and local environmental settings on macrofaunal colonization patterns and organic carbon degradation rates. The trays were filled with glass beads and this artificial substrate was enriched with ground particulate organic matter in a gradient of 0%, 0.34%, 1.02% and 3.43% organic carbon. The highest rates of organic carbon degradation ranged, according to the duration of the experiments, from 1.59...
Tipo: Text
Palavras-chave: Diversity; Organic enrichment; Macrofauna; Deep sea; Colonization; Biozaire.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-7323.pdf

The influence of geological, geochemical, and biogenic habitat heterogeneity on seep biodiversity
Provedor de dados: 5
Autores: Cordes, Erik E.; Cunha, Marina R.; Galeron, Joelle; Mora, Camilo; Olu-le Roy, Karine; Sibuet, Myriam; Van Gaever, Saskia; Vanreusel, Ann; Levin, Lisa A.
Cold seeps are among the most heterogeneous of all continental margin habitats. Abiotic Sources of heterogeneity in these systems include local variability in fluid flow, geochemistry, and substrate type, which give rise to different sets of microbial communities, microbial symbiont-bearing foundation species, and associated heterotrophic species. Biogenic habitats created by microbial mats and the symbiotic species including vesicomyid clams, bathymodiolin mussels, and siboglinid tubeworms add an additional layer of complexity to seep habitats. These forms of habitat heterogeneity result in a variety of macrofaunal and meiofaunal communities that respond to changes in structural complexity, habitat geochemistry, nutrient sources, and interspecific...
Tipo: Text
Palavras-chave: Beta diversity; Chemosynthetic communities; Cold seep; Continental margin; Macrofauna; Meiofauna; Metacommunity; Species accumulation.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00002/11281/7826.pdf

Cadmium pathways in an exploited intertidal ecosystem with chronic cadmium inputs (Marennes-Oleron, Atlantic coast, France)
Provedor de dados: 5
Autores: Pigeot, J; Miramand, P; Guyot, T; Sauriau, Pierre-guy; Fichet, D; Le Moine, Olivier; Huet, V.
The Marennes-Oleron Bay is subject to chronic pollution by cadmium (Cd) from the Gironde watershed. An ecosystem approach was used to study the fate of cadmium in the different biological compartments. The median Cd concentration was 0.4 mu g g(-1) dry weight for the 63 benthic species measured. When combined with the respective biomasses for the different species studied, we estimated that 7 kg of Cd is partitioned into the soft tissues of the benthic species in the bay. The majority of this cadmium was distributed between primary producers, mainly microphytobenthos (40 %), and suspension-feeders, mainly oysters (40 %). All other benthic species measured were associated with negligible masses of Cd. Two trophic levels contained 98 % of the Cd: 3 kg was...
Tipo: Text
Palavras-chave: Marennes Oleron Bay; Trophic food web; Bioaccumulation; Cadmium; Macrofauna; Microphytobenthos; Macrophytes.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-3615.pdf

Biodiversity patterns, environmental drivers and indicator species on a High-temperature Hydrothermal edifice, mid-Atlantic ridge
Provedor de dados: 5
Autores: Sarrazin, Jozee; Legendre, Pierre; De Busserolles, Fanny; Fabri, Marie-claire; Guilini, Katja; Ivanenko, Viatcheslav N.; Morineaux, Marie; Vanreusel, Ann; Sarradin, Pierre-marie.
Knowledge on quantitative faunal distribution patterns of hydrothermal communities in slow-spreading vent fields is particularly scarce, despite the importance of these ridges in the global mid-ocean system. This study assessed the composition, abundance and diversity of 12 benthic faunal assemblages from various locations on the Eiffel Tower edifice (Lucky Strike vent field, Mid-Atlantic Ridge) and investigated the role of key environmental conditions (temperature, total dissolved iron (TdFe), sulfide (TdS), copper (TdCu) and pH) on the distribution of macro- and meiofaunal species at small spatial scales (&lt; 1 m). There were differences in macro- and meiofaunal community structure between the different sampling locations, separating the hydrothermal...
Tipo: Text
Palavras-chave: Biodiversity patterns; Environmental drivers; Indicator species; Hydrothermal vents; Mid-Atlantic Ridge; Meiofauna; Macrofauna; Lucky Strike.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00266/37713/35731.pdf

Colonization of synthetic sponges at the deep-sea Lucky Strike hydrothermal vent field (Mid-Atlantic Ridge): a first insight
Provedor de dados: 5
Autores: Baldrighi, Elisa; Zeppilli, Daniela; Crespin, Rosalie; Chauvaud, Pierre; Pradillon, Florence; Sarrazin, Jozee.
The main objective of the present study was to investigate invertebrate colonization processes at deep-sea hydrothermal vents in response to environmental factors and to the presence of complex artificial substrata (i.e., synthetic sponges). We set out a pilot experiment at 1700 m depth on the Lucky Strike vent field (Eiffel Tower, Mid-Atlantic Ridge). Synthetic sponges were deployed in 2011 at five sites along a gradient of hydrothermal activity and were recovered in 2013, and the composition of macro- and meiofauna was assessed on four of them. The influence of temperature and fluid inputs on colonizer faunal abundance and diversity was analyzed. Faunal abundance and diversity decreased with increasing distance from vent emission. The colonizers were...
Tipo: Text
Palavras-chave: Synthetic sponges; Colonization; Lucky Strike; Meiofauna; Macrofauna; Substratum type.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00410/52135/52937.pdf

Spatial and temporal patterns of benthic macrofaunal communities on the deep continental margin in the Gulf of Guinea
Provedor de dados: 5
Autores: Galeron, Joelle; Menot, Lenaick; Renaud, Nolwenn; Crassous, Philippe; Khripounoff, Alexis; Treignier, C.; Sibuet, M.
Density, taxonomic composition at higher taxon level and vertical distribution of benthic macrofaunal communities and sediment characteristics (pore water, nitrogen, organic carbon, sulfur, C/N ratio, n-alcohol biomarkers) were examined at three deep sites on the Congo-Gabon continental margin. This study was part of the multidisciplinary BIOZAIRE project that aimed at studying the deep benthic ecosystems in the Gulf of Guinea. Sampling of macrofaunal communities and of sediment was conducted during three cruises (January 2001, December 2001 and December 2003) at two downslope sites (4000 m depth), one located near the Congo submarine channel (15 km in the south) and the other one far from the channel (150km in the South). The third area located 8 km north...
Tipo: Text
Palavras-chave: Deep sea; Distribution; Community structure; Macrofauna; Congo canyon; Congo Angola margin; Equatorial west Africa margin; Atlantic.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-7315.pdf

Determining the Ecological Status of Benthic Coastal Communities: A Case in an Anthropized Sub-Arctic Area
Provedor de dados: 5
Autores: Dreujou, Elliot; Desroy, Nicolas; Carrière, Julie; Tréau De Coeli, Lisa; Mckindsey, Christopher W.; Archambault, Philippe.
With the widespread influence of human activities on marine ecosystems, evaluation of ecological status provides valuable information for conservation initiatives and sustainable development. To this end, many environmental indicators have been developed worldwide and there is a growing need to evaluate their performance by calculating ecological status in a wide range of ecosystems at multiple spatial and temporal scales. This study calculated and contrasted sixteen indicators of ecological status from three methodological categories: abundance measures, diversity parameters and characteristic species. This selection was applied to coastal benthic ecosystems at Sept-Îles (Québec, Canada), an important industrial harbor area in the Gulf of St. Lawrence,...
Tipo: Text
Palavras-chave: Environmental indicators; Ecological status; Coastal benthos; Macrofauna; Gulf of St; Lawrence.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00687/79910/82820.pdf

Comparison of benthic foraminifera and macrofaunal indicators of the impact of oil-based drill mud disposal
Provedor de dados: 5
Autores: Denoyelle, Marieva; Jorissen, Frans J.; Martin, Daniel; Galgani, Francois; Mine, Jacques.
We compare foraminifera and macrofauna as bio-indicators of oil-based drill mud disposal site off Congo. The most polluted sites are characterized by poor faunas, dominated by some very tolerant taxa. Slightly further from the disposal site, there is an area with strongly increased densities, heavily dominated by opportunistic taxa. Still further, macrofauna appears to be similar to that at the reference area, but the foraminiferal meiofauna still suggests a slight environmental perturbation. The foraminiferal FIEI index, based on the species distribution in the study area, appears to be more discriminative than the macrofaunal ITI index, based on a priori definitions of the trophic guilds of the various taxa. Our comparative approach allows us to point...
Tipo: Text
Palavras-chave: Bio-indicators; Biotic index; Drilling mud; Foraminifera; Macrofauna.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00019/13027/10203.pdf

Macrostylis metallicola     spec. nov.—an isopod with geographically clustered genetic variability from a polymetallic-nodule area in the Clarion-Clipperton Fracture Zone
Provedor de dados: 5
Autores: Riehl, Torben; De Smet, Bart.
Background: The Clarion-Clipperton Fracture Zone (CCFZ) in the Northeast Central Pacific Ocean is a region of heightened scientific and public interest because of its wealth in manganese nodules. Due to a poor ecological understanding at the abyssal seafloor and limited knowledge of the organisms inhabiting this area, huge efforts in alpha taxonomy are required. To predict and manage potential hazards associated with future mining, taxonomy is an essential first step to grasp fundamental ecosystem traits, such as biogeographic patterns, connectivity, and the potential for post-impact recolonization. Amongst samples from the Global Sea Mineral Resources NV exploration area (EA) in the CCFZ an undescribed species of the isopod crustacean family Macrostylidae...
Tipo: Text
Palavras-chave: Taxonomy; Janiroidea; Macrostylidae; Crustacea; Deep-sea mining impact; Manganese nodules; CCFZ; CCZ; Macrofauna; Abyssal.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00611/72349/71247.pdf

De macrofauna van wateren in het met rivierwater geïnfiltreerde duingebied Meijendel
Provedor de dados: 16
Autores: Nieukerken, E. van.
Verslag van een doctoraalonderwerp van 12 maanden bij de vakgroep Oecologie, Rijksuniversiteit Leiden, 1974-1977
Tipo: Report
Palavras-chave: Meijendel; Macrofauna.
Ano: 1978
URL: http://www.repository.naturalis.nl/record/643552

Native and non-native species of hard substrata in the Dutch Wadden Sea
Provedor de dados: 16
Autores: Gittenberger, A.; Rensing, M.; Stegenga, H.; Hoeksema, B.W.
Bij een inventarisatie van hard substraat in 83 locaties in de Nederlandse Waddenzee, in zoutgehaltes van 10-32 ppt, werden in juli/augustus 2009 in totaal 129 soorten planten en dieren waargenomen. Van deze soorten hadden er 29 een uitheemse of onbekende oorsprong. In aanvulling hierop werd een inventarisatie gemaakt van nog ongepubliceerde waarnemingen in de Waddenzee. Elf soorten en één ondersoort waren nog niet eerder geregistreerd in de Nederlandse Waddenzee. Eén alg, Ceramiaceae sp., met onbekende oorsprong, is vermoedelijk een nieuwe soort voor Europa. Eén zakpijpsoort, Molgula socialis, is nieuw voor Nederland. Deze soort is waarschijnlijk algemeen verspreid in Nederland en is mogelijk zelf inheems. In het  verleden was hij vermoedelijk vaak...
Tipo: Article / Letter to the editor
Palavras-chave: Marine algae; Macrofauna; Nederland; Waddenzee; Hard substraat; 42.75.
Ano: 2010
URL: http://www.repository.naturalis.nl/record/441406

Macrofauna van de wateren in "De Grrote Peel" : een voorjaarsbeeld
Provedor de dados: 16
Autores: Nieukerken, E.J. van; Tol, J. van.
The waters of the State Reserve "De Groote Peel", situated on the border of the provinces of North-Brabant and Limburg in the Netherlands, were investigated during Easter 1971 (8-11th of April). The reserve is a former peat-moor, where peat was cut until the first half of this century. Now vast areas of Molinia caerulea with wild shoots of Salix aurita and Betula pubescens are found. Special attention was paid to waterbugs (Heteroptera aquatica and semi-aquatica) and waterbeetles (Coleoptera aquatica). The species present indicate slightly polluted oligotrophic water. The pollution is probably caused by three factors: the inflow of eutrophic water, the breeding of Blackheaded Gulls (Larus ridibundus) and the tourists. Table 1 gives a list of the...
Tipo: Article / Letter to the editor
Palavras-chave: De Groote Peel; Noordbrabant; Limburg; Macrofauna; Inventarisatie; Vervuiling; Waterwantsen; Waterkevers; 42.92.
Ano: 1972
URL: http://www.repository.naturalis.nl/record/303572

Habitat heterogeneity effects on macro- and meiofauna (especially  nematodes) in Punta Francés coral reef (SW Cuban Archipelago)
Provedor de dados: 20
Autores: Armenteros, M.; Ruiz-Abierno, A.; Sosa, Y.; Pérez-García, J. A.
Benthic macrofauna and meiofauna distribution patterns were  described in a tropical coral  reef (Punta Francés, Cuban  Archipelago, Caribbean Sea). Density and main taxa composition for macrofauna and meiofauna and species diversity and  organismal traits for free-living nematodes were compared among four habitats: seagrass bed, sand flat, dead coral and hard  bottom. Strong spatial patterns of distribution across habitats were detected and explained by a complex combination of  habitat features. Signal/noise ratio for macrofauna data of distribution was enough strong to detect changes across habitats  but the sizes of sampling devices were not adequate to represent the real patterns in the nature. Meiofauna patterns of  distribution were driven by the...
Tipo: Journal Contribution
Palavras-chave: Coral reefs; Distribution; Diversity index; Macrofauna.
Ano: 2012
URL: http://hdl.handle.net/1834/4552

Diversidad zoológica asociada a un silvopastoreo leucaena-guinea con diferentes edades de establecimiento
Provedor de dados: 86
Autores: Lazo,Jatnel Alonso; Valdés,Nurys Valenciaga; Sampaio,Regynaldo Arruda; Leite,Germano Leão Demolin.
El objetivo de este trabajo fue evaluar la diversidad zoológica asociada a un silvopastoreo con leucaena-guinea, por medio de la caracterización de la composición y estructura de las aves, insectos y la macrofauna del suelo, en cuatro edades de establecimiento (3, 4, 5 y 6 años de explotación). Con las especies registradas en cada uno de estos grupos zoológicos, se calcularon los índices ecológicos: número de individuos, riqueza, diversidad y abundancia de especies, en diferentes edades del sistema. En todos los grupos, se apreció el aumento significativo en la riqueza de especies y en el índice de diversidad biológica de Shannon, en la medida que se desarrolló el sistema. Se observó incremento en la abundancia de insectos biorreguladores y, en relación...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leucaena leucocephala; Panicum maximum; Aves; Insectos; Macrofauna; Sostenibilidad.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2007001200001

Análise multivariada da fauna edáfica em diferentes sistemas de preparo e cultivo do solo
Provedor de dados: 86
Autores: Baretta,Dilmar; Mafra,Álvaro Luiz; Santos,Julio Cesar Pires; Amarante,Cassandro Vidal Talamini do; Bertol,Ildegardis.
O objetivo deste trabalho foi avaliar o efeito de sistemas de preparo e cultivo do solo sobre a diversidade de animais da fauna edáfica, por meio de técnicas de análise multivariada. Na análise canônica discriminante, os preparos conservacionistas com sucessão de culturas foram separados em relação aos tratamentos com rotação de culturas. Os grupos Acarina, Hymenoptera, Isopoda e Collembola, e o índice de Shannon (H) foram os atributos que mais contribuíram para separar os tratamentos. A análise de correspondência mostrou forte associação dos grupos Acarina e Hymenoptera com o tratamento semeadura direta com sucessão de culturas, e do grupo Collembola com o preparo convencional.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Biodiversidade; Bioindicadores; Semeadura direta; Preparo convencional; Mesofauna; Macrofauna.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2006001100014

Crescimento do milho em solo sob atividade de Chibui bari (Oligochaeta: Glossoscolecidae)
Provedor de dados: 90
Autores: Fiuza,Denise Temporim Furtado; Kusdra,Jorge Ferreira; Fiuza,Sergio da Silva.
Chibui bari (Righi &amp;amp; Guerra, 1985) é um minhocuçu geófago, com tamanho até 60 cm, que tem como habitat vários solos no Acre. A atividade dessa espécie resulta na produção de grande quantidade de coprólitos ricos em nutrientes. O objetivo desta pesquisa foi avaliar o crescimento do milho em solo com presença da minhoca Chibui bari. O experimento foi conduzido em casa de vegetação da Universidade Federal do Acre, no município de Rio Branco, Acre, em 2009. O delineamento experimental foi inteiramente casualizado, com seis tratamentos (0, 1, 2, 3, 4 e 5 animais/tubo). O milho da variedade Bandeirante foi semeado em tubos de PVC com capacidade de 15,7 L, contendo solo de textura média. As variáveis avaliadas foram o diâmetro do colmo, as massas da...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Minhoca; Minhocuçu; Macrofauna; Zea mays.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000200005

Integração lavoura e pecuária: o estado da arte e inovações tecnológicas
Provedor de dados: 96
Autores: Macedo,Manuel Claudio Motta.
Sustentabilidade é tema atual e cada vez mais discutido no desenvolvimento agropecuário do Brasil. Este tem experimentado um grande desenvolvimento tecnológico e produtivo no agronegócio, ampliando as exportações, a renda dos produtores, a oferta de alimentos com melhor qualidade, e menor custo aos consumidores. No entanto, dois aspectos chamam a atenção quando se analisa sustentabilidade: o uso do solo com preparo excessivo e monocultivos, e a degradação das pastagens. O monocultivo e práticas culturais inadequadas têm causado perda de produtividade, degradação do solo e dos recursos naturais. Sistemas contínuos com monocultivos aumentam a ocorrência de pragas e doenças, tais como o percevejo castanho, nematóides e a ferrugem da soja, causando inúmeros...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brachiaria; Estoque de carbono; Lavoura-pecuária; Macrofauna; Qualidade do solo; SILPs; Sustentabilidade.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009001300015

Macrofauna del curso inferior y estuario del río Biobío (Chile): cambios asociados a variabilidad estacional del caudal hídrico
Provedor de dados: 97
Autores: BERTRÁN,CARLOS; ARENAS,JOSÉ; PARRA,OSCAR.
Uno de los sistemas lóticos chilenos de mayor importancia de acuerdo a su caudal es el río Biobío (ca. 37º S). Su estuario es reducido, especialmente en las épocas de máximo caudal. Con el objetivo de poner a prueba la hipótesis de que en verano la disminución del caudal del río Biobío, determina una mayor depositación del material particulado fino y que el aumento del caudal en invierno resulta en el lavado y transporte del material depositado hacia el mar, y consecuentemente en una disminución de la macrofauna bentónica, se recolectaron muestras para análisis sedimentológicos y faunísticos en el curso inferior y estuario del río Biobío, durante agosto de 1993 y marzo de 1994. Los análisis sedimentológicos indican que el tamaño medio del sedimento...
Tipo: Journal article
Palavras-chave: Macrofauna; Estuario del río Biobío; Cambios de caudal.
Ano: 2001
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2001000200010

Diversity of aquatic insects and other associated macroinvertebrates in an arid wetland (Mendoza Province, Argentina)
Provedor de dados: 99
Autores: Ciocco,Néstor F.
The goal of this work was to expand the evaluation of diversity of aquatic insects and associated macroinvertebrates along the Bañado Carilauquen using hand net for water column and Petersen dredge for benthos. Additionally, we explored seasonal and spatial differences and similarities of macroinvertebrate assemblages&amp;#8217; qualitative composition. Samplings were conducted seasonally in five reaches of the Bañado Carilauquen, from headwaters to outlet. A total of 47 taxa were identified; 37 of them were insects, mainly Coleoptera, Diptera and Hemiptera, in this order. Macroinvertebrate composition was more conditioned by the spatial than the seasonal variable at the ends of the gradient. Three faunal groupings were detected: headwaters, middle reach...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Macrofauna; Lentic habitats; Inventory; Spatial and seasonal variations; Ramsar site.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802013000100005

Population dynamics and secondary production of Euzonus furciferus Ehlers (Polychaeta, Opheliidae) in an exposed sandy beach of Southern Brazil
Provedor de dados: 104
Autores: Souza,José R. B. de; Borzone,Carlos A.
The distribution, population dynamics and secondary production of the polychaete Euzonus furciferus was studied in Atami Beach (Southern Brazil), from February 1992 to March 1993. Euzonus furciferus Ehlers, 1897 is the only deposit feeder species of the upper intertidal region. The organisms were present in the sandy beach all over the year, concentrated in a narrow band, and reaching maximal densities of 3,029 individuals m-2. Peaks of abundance occurred in September 1992, with a mean of 681.8 individuals m-2. Recruitment occurred in winter, with a peak in July. Mean annual biomass was estimated in 0.218 gAFDW m-2, with a total annual production of 0.466 gAFDW m-2 y-1, giving a P/B ratio of 2.13 y-1. Similar values were found for a filter-feeder...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Annelida; Benthos; Deposit feeder; Intertidal; Macrofauna.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000400034

Biologia populacional das espécies de Ampithoidae (Crustacea, Amphipoda) associadas a Sargassum filipendula (Phaeophyta, Fucales) na Praia da Fortaleza, Ubatuba, São Paulo, Brasil
Provedor de dados: 104
Autores: Jacobucci,Giuliano B.; Leite,Fosca P. P.
A biologia populacional de três espécies de anfípodes da família Ampithoidae (Ampithoe ramondi, Cymadusa filosa e Sunampithoe pelagica) associadas a Sargassum filipendula da Praia da Fortaleza, litoral norte do Estado de São Paulo foi estudada entre junho de 2000 e maio de 2001. Os anfípodes foram identificados, contados e separados em classes de tamanho através de um conjunto de peneiras agrupadas. Foram obtidos histogramas mensais de jovens, machos e fêmeas. A razão sexual dos ampitoídeos foi avaliada mensalmente. A biologia reprodutiva das espécies foi avaliada através freqüência relativa mensal de fêmeas ovígeras, de sua fecundidade, volume médio dos ovos e correlação do tamanho da cabeça com o número de ovos contidos em seus marsúpios. Ampithoe...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anfípodes; Dinâmica populacional; Fital; Macrofauna.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752006000400031

Distribuição vertical e flutuação sazonal da macrofauna vágil associada a Sargassum cymosum C. Agardh, na praia do Lázaro, Ubatuba, São Paulo, Brasil
Provedor de dados: 104
Autores: Jacobucci,Giuliano Buzá; Leite,Fosca Pedini Pereira.
Seasonal fluctuations and depth distribution of the vagile macrofauna associated with Sargassum cymosum at Lazaro beach, Ubatuba, São Paulo State, were evaluated through density comparison of higher taxonomic groups among three depth intervals in four periods of the year. Ten groups were identified and among them gammarid and caprellid amphipods were numerically dominant in all sampling periods and did not show any consistent zonation trend. Gastropods, polychaetes and ophiuroids ocurred in lower densities and tended to dominate as depth increased, Wet weight algae variation did not explain the observed spatial and temporal patterns. Biotic interactions, recruitment and environmental parameters are probably involved in seasonal density variation of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Depth distribution; Seasonal fluctuations; Macrofauna; Sargassum; Phytal; Brazil.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000500004

Análisis tafonómico e inferencia del grado de mezcla temporal y espacial de la macrofauna del Miembro Pilmatué de la Formacion Agrio, Cretácico Inferior de cuenca Neuquina, Argentina
Provedor de dados: 41
Autores: Lazo,Darío G.
Se describen e interpretan las tafofacies del Miembro Inferior o Pilmatué de la Formación Agrio en el sector central de la cuenca Neuquina para determinar el grado de mezcla temporal y lateral que presentan sus macrofósiles. A su vez se presenta una breve descripción e interpretación de las litofacies presentes en la misma unidad. El Miembro Pilmatué se caracteriza por abundantes concentraciones fósiles dominadas por organismos bentónicos dentro de los que se destacan corales, serpúlidos, bivalvos y gastrópodos. Los mismos se registran junto a amonites, lo que permite ubicarlos estratigráficamente en forma muy precisa. Tres perfiles ubicados entre Chos Malal y Zapala (Neuquén) fueron analizados con sumo detalle. Los mismos abarcan una distancia de 44,2 km....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Valanginiano-Hauteriviano; Shoreface-plataforma influenciada por tormentas; Macrofauna; Tafonomía.
Ano: 2006
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142006000200005

Levantamento de Mollusca, Crustacea e Echinodermata associados a Sargassum spp. na Ilha da Queimada Pequena, Estação Ecológica dos Tupiniquins, litoral sul do Estado de São Paulo, Brasil
Provedor de dados: 49
Autores: Jacobucci,Giuliano Buzá; Güth,Arthur Ziggiatti; Turra,Alexander; Magalhães,Cláudia Alves de; Denadai,Márcia Regina; Chaves,André Murtinho Ribeiro; Souza,Estevão Carino Fernandes de.
Neste trabalho foi realizado o primeiro levantamento da macrofauna de fital da ilha da Queimada Pequena, focalizando o registro das espécies de moluscos, crustáceos e equinodermos associados a Sargassum spp. Para a amostragem da macrofauna associada, foram coletadas aleatoriamente 6 frondes de Sargassum localizadas a 6 m de profundidade, usando-se equipamento de mergulho autônomo. As frondes foram envolvidas em sacos de tecido com malha de 200 mm, mraspadas do substrato, colocadas em recipientes com uma solução de formaldeído 10% e levadas ao laboratório para remoção e identificação da fauna. Quarenta e um táxons foram identificados, havendo dominância de crustáceos peracáridos. Em relação aos Mollusca, a composição específica foi diferente em relação...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fital; Macrofauna; Sargassum; Levantamento marinho; Queimada Pequena.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032006000200023

INVERTEBRADOS MARINOS ASOCIADOS CON LAS PLATAFORMAS DE GAS EN LA GUAJIRA (CARIBE COLOMBIANO)*
Provedor de dados: 50
Autores: Gracia C.,Adriana; Cruz,Norella; Borrero,Giomar; Báez,Diana Patricia; Santodomingo,Nadiezhda.
El desarrollo industrial y económico de Colombia se ha expandido en la búsqueda de nuevos recursos minerales hacia los límites del mar territorial. La prospección y construcción de infraestructuras en el mar plantean nuevos retos para el desarrollo sostenible del país. Este estudio de línea base se realizó con el fin de conocer las especies de invertebrados marinos que se han establecido sobre las únicas plataformas permanentes para la explotación de gas ubicadas mar afuera en La Guajira, al norte del Caribe colombiano: plataformas A y B, construidas sobre fondos de 18 y 33 m de profundidad, respectivamente. Por medio de buceo autónomo Scuba, se recolectaron e identificaron 116 especies de invertebrados marinos. Los crustáceos presentaron la mayor riqueza...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sustratos artificiales; Biofouling; Macrofauna; Caribe colombiano; Inventarios de especies.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000200008

Benthic polychaetes collected in the III Expedición “Admiral Padilla” Austral Summer 2016-2017, to the north of the Antarctic Peninsula
Provedor de dados: 50
Autores: Arteaga-Flórez,Catalina; Bolaño-Lara,Maryela.
ABSTRACT Polychaeta represents the most diverse class in the phylum Annelida, mainly composed by marine organisms, with some terrestrial and freshwater representatives. The present work records the information of the benthic polychaetes, which were collected in four stations in the northern sector of the Antarctic Peninsula, in the III Expedición “Admiral Padilla” verano austral 2016-2017, including taxonomy, relative abundance and frequency of occurrence by family. A total of 326 individuals were quantified, distributed in 12 families: Apistobranchidae, Capitellidae, Cirratulidae, Dorvilleidae, Maldanidae, Nereididae, Orbiniidae, Paraonidae, Serpulidae, Sigalionidae, Spionidae and Syllidae, and the suborder Terebelliformia. Cirratulidae, and Paraonidae...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Marine benthos; Macrofauna; Annelida; Biodiversity; Biogerlache.
Ano: 2021
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612021000300221

Effects of plant cover on the macrofauna of Spartina marshes in northern Brazil
Provedor de dados: 52
Autores: Braga,Cesar França; Beasley,Colin Robert; Isaac,Victoria Judith.
Data on macrofauna density and diversity, and the height and density of Spartina brasiliensis, were obtained from salt marsh beds of a tropical estuary in northern Brazil. Sampling was carried out at four distinct times of the year, during the wet and dry seasons and in the transition periods between these. Sampling was also carried out in salt marshes of three size classes, small, medium and large. Variables were analyzed in relation to time of year and salt marsh size class. Overall, 46 taxa were found, with polychaetes, isopods and the gastropod Neritina virginea dominating the fauna. Macrofauna density and diversity were positively correlated with culm density, indicating a possible role in protection from predation. All the three variables were higher...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Macrofauna; Spartina; Density; Diversity; Seasonality; Tropical estuary.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000600013

Atributos físicos e químicos de agregados pedogênicos e de coprólitos de minhocas em diferentes classes de solos da Paraíba
Provedor de dados: 64
Autores: Silva Neto,Luís de França da; Silva,Ivandro de França da; Inda,Alberto Vasconcellos; Nascimento,Paulo César do; Bortolon,Leandro.
A estrutura do solo é constituída de agregados pedogênicos e biogênicos, formados respectivamente pela hierarquização de agregados e pela ação da macrofauna, sobretudo a das minhocas. Neste estudo, objetivou-se a comparação entre agregados do solo (pedogênicos) e coprólitos de minhocas (biogênicos) de diferentes tamanhos e classes de solos. As coletas de amostras indeformadas de solos e coprólitos de minhocas (Pontoscolex corethrurus Muller, 1857) foram realizadas em quatro solos de classes diferentes do Estado da Paraíba (Latossolo Amarelo, Argissolo Vermelho Amarelo, Luvissolo Crômico e Nitossolo Vermelho). As caracterizações físicas e químicas de agregados e coprólitos foram realizadas após secagem à sombra e separação em três classes de diâmetros (20,0...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Macrofauna; Estabilidade de agregados; Atividade biológica; Qualidade do solo.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542010000600002