Consulta: subjectFacets:"Community ecology"
Registros recuperados: 34
Data/hora: 01/06/2024 05:35:43

Estimating Dynamic Risk Factors for Pathogen Transmission Using Community-Level Bird Census Data at the Wildlife/Domestic Interface
Provedor de dados: 7
Autores: Caron, Alexandre; UPR AGIRs, Department ES, Cirad, Harare Zimbabwe; UPR AGIRs, Department ES, Cirad, Montpellier France; Mammal Research Institute, Department of Entomology and Zoology, University of Pretoria, Pretoria, South Africa; alexandre.caron@cirad.fr; de Garine-Wichatitsky, Michel; UPR AGIRs, Deparmtent ES, Cirad, Harare, Zimbabwe; UPR AGIRs, Department ES, Cirad, Montpellier, France; degarine@cirad.fr; Gaidet, Nicolas; UPR AGIRs, Department ES, Cirad, Montpellier, France; nicolas.gaidet-drapier@cirad.fr; Chiweshe, Ngoni; UPR AGIRs, Department ES, Cirad, Harare, Zimbabwe; chiweshen@yahoo.co.uk; Cumming, Graeme S; Percy Fitz-Patrick Institute, DST/NRF Center of Excellence, University of Cape Town; Graeme.Cumming@uct.ac.za.
Tipo: Peer-Reviewed Reports
Palavras-chave: Avian influenza; Bridge species; Community ecology; Risk factor; Wild/domestic interface.
Ano: 2010

Philosophical Issues in Ecology: Recent Trends and Future Directions
Provedor de dados: 7
Autores: Colyvan, Mark; University of Sydney; mcolyvan@usyd.edu.au; Linquist, Stefan; University of Guelph; linquist@uoguelph.ca; Grey, William; University of Queensland; wgrey@uq.edu.au; Griffiths, Paul E.; University of Sydney; paul@representinggenes.org; Odenbaugh, Jay; Lewis and Clark College; jay@lclark.edu; Possingham, Hugh P; University of Queensland; h.possingham@uq.edu.au.
Philosophy of ecology has been slow to become established as an area of philosophical interest, but it is now receiving considerable attention. This area holds great promise for the advancement of both ecology and the philosophy of science. Insights from the philosophy of science can advance ecology in a number of ways. For example, philosophy can assist with the development of improved models of ecological hypothesis testing and theory choice. Philosophy can also help ecologists understand the role and limitations of mathematical models in ecology. On the other side, philosophy of science will be advanced by having ecological case studies as part of the stock of examples. Ecological case studies can shed light on old philosophical topics as well as raise...
Tipo: Peer-Reviewed Synthesis
Palavras-chave: Biodiversity; Community ecology; Decision theory; Environmental ethics; Hypothesis testing; Philosophy of ecology; Population models.
Ano: 2009

Composition and diversity of bees (Hymenoptera) attracted by Moericke traps in an agricultural area in Rio Claro, state of São Paulo, Brasil
Provedor de dados: 76
Autores: Souza,Luceli de; Campos,Maria J. de O.
The composition and diversity of bees in an agricultural area in Rio Claro, state of São Paulo, Brazil, were studied from May 2003 to June 2004, using Moericke traps. The collection site, an area with 58.08 hectares, is characterized by grain production and direct planting, with 70% of the surrounding area planted with sugar cane. During the study, 456 bees were collected, distributed among 20 genera, pertaining to the families Andrenidae (4.8%), Apidae (40.8%) and Halictidae (54.4%). Specimens of genera Dialictus (38%) and Diadasia (30%) predominated in this area. The species diversity, assessed using the Shannon and Simpson indices, were H’=1.88 and 1/ D= 4.15, respectively, and the Evenness index was 0.61.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Community ecology; Apifauna; Annual crops; Direct planting; Pantraps.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212008000200012

Temporal and spatial variation in temperature experienced by macrofauna at main endeavour Hydrothermal vent field
Provedor de dados: 5
Autores: Lee, Raymond W.; Robert, Katleen; Matabos, Marjolaine; Bates, Amanda E.; Juniper, S. Kim.
A significant focus of hydrothermal vent ecological studies has been to understand how species cope with various stressors through physiological tolerance and biochemical resistance. Yet, the environmental conditions experienced by vent species have not been well characterized. This objective requires continuous observations over time intervals that can capture environmental variability at scales that are relevant to animals. We used autonomous temperature logger arrays (four roughly parallel linear arrays of 12 loggers spaced every 10–12 cm) to study spatial and temporal variations in the thermal regime experienced by hydrothermal vent macrofauna at a diffuse flow vent. Hourly temperatures were recorded over eight months from 2010 to 2011 at Grotto vent...
Tipo: Text
Palavras-chave: Hydrothermal vents; Community ecology; Thermal biology; Endeavour; Time-series.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00283/39428/37868.pdf

Integrating taxon-based, trait-based and trophic-network approaches to study community dynamics in an exploited ecosystem, the Celtic Sea
Provedor de dados: 5
Autores: Merillet, Laurene.
Marine ecosystems face many pressures, the main ones being fishing and climate change. These pressures do not have the same consequences on the different facets of biodiversity, e.g. on taxa, traits and networks, and their study is necessary for the implementation of an ecosystem approach to fisheries. The Celtic Sea is a very important fishing area for European fisheries, with a specific richness greater than adjacent areas. Based on a time series from 2000 to 2016, I have studied the spatio-temporal dynamics of 101 species of the ecosystem. Over this period, taxonomic biodiversity was stable, and the importance of fishing as a structuring variable for communities decreased after 2009, and was lower than the environment (depth, chlorophyll a concentration...
Tipo: Text
Palavras-chave: Approche écosystémique des pêches; Dynamiques spatio-temporelles; Traits d’histoire de vie; Réseaux trophiques; Gestion des ressources; Ecosystem approach to fisheries; Spatio-temporal dynamics; Community ecology; Life-history traits; Food webs; Resource management.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00666/77806/79980.pdf

Uncovering ecological state dynamics with hidden Markov models
Provedor de dados: 5
Autores: Mcclintock, Brett T.; Langrock, Roland; Gimenez, Olivier; Cam, Emmanuelle; Borchers, David L.; Glennie, Richard; Patterson, Toby A.; Coulson, Tim.
Ecological systems can often be characterised by changes among a finite set of underlying states pertaining to individuals, populations, communities or entire ecosystems through time. Owing to the inherent difficulty of empirical field studies, ecological state dynamics operating at any level of this hierarchy can often be unobservable or ‘hidden’. Ecologists must therefore often contend with incomplete or indirect observations that are somehow related to these underlying processes. By formally disentangling state and observation processes based on simple yet powerful mathematical properties that can be used to describe many ecological phenomena, hidden Markov models (HMMs) can facilitate inferences about complex system state dynamics that might otherwise...
Tipo: Text
Palavras-chave: Behavioural ecology; Community ecology; Ecosystem ecology; Hierarchical model; Movement ecology; Observation error; Population ecology; State-space model; Time series.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00655/76692/77831.pdf

Exploring the abundance-occupancy relationships for the Georges Bank finfish and shellfish community from 1963 to 2006
Provedor de dados: 5
Autores: Frisk, Michael G.; Duplisea, Daniel E.; Trenkel, Verena.
Abundance-occupancy (A-O) patterns were explored temporally and spatially for the Georges Bank finfish and shellfish community to evaluate long-term trends in the assemblage structure and to identify anthropogenic and environmental drivers impacting the ecosystem. Analyses were conducted for 32 species representing the assemblage from 1963 to 2006 using data from the National Marine Fisheries Service's annual autumn bottom trawl survey. For individual species, occupancy was considered the proportion of stations with at least one individual present, and abundance was estimated as the mean annual number of fish captured per station. Intraspecific relationships were estimated to provide information on utilization of space by a species. Multispecies...
Tipo: Text
Palavras-chave: Abundance-occupancy relationships; Commercial catchability; Community ecology; Exploitation; Finfish; Fishing; Georges Bank; Habitat fragmentation; Hyperstability; Resilience; Shellfish.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00033/14397/14043.pdf

How does abundance scale with body size in coupled size-structured food webs?
Provedor de dados: 5
Autores: Blanchard, Julia L.; Jennings, Simon; Law, Richard; Castle, Matthew D.; Mccloghrie, Paul; Rochet, Marie-joelle; Benoit, Eric.
Widely observed macro-ecological patterns in log abundance vs. log body mass of organisms can be explained by simple scaling theory based on food (energy) availability across a spectrum of body sizes. The theory predicts that when food availability falls with body size (as in most aquatic food webs where larger predators eat smaller prey), the scaling between log N vs. log m is steeper than when organisms of different sizes compete for a shared unstructured resource (e.g. autotrophs, herbivores and detritivores; hereafter dubbed 'detritivores'). In real communities, the mix of feeding characteristics gives rise to complex food webs. Such complexities make empirical tests of scaling predictions prone to error if: (i) the data are not disaggregated in...
Tipo: Text
Palavras-chave: Size spectrum; North Sea; Macroecology; Ecosystem effects of fishing; Community ecology; Benthic pelagic coupling; Allometric scaling.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-7318.pdf

Differences in the mammalian habitat use in a mosaic of vegetation types of an Atlantic rain-forest reserve, Brazil
Provedor de dados: 81
Autores: Ferreguetti,Atilla C; Tomas,Walfrido M; Bergallo,Helena G.
This study aimed to evaluate how habitat use by medium and large sized mammals was related to different vegetation types in an Atlantic rain-forest reserve in south-eastern Brazil. Our hypotheses were that each vegetation type found in the Vale Natural Reserve (VNR) will present a different mammal species composition, and that mammal species richness and relative abundance will be higher in areas nearest to water. We installed 39 camera traps in the VNR, and used two covariates to characterize the different vegetation types (density of trees and lianas). We also used one spatial covariate: the distance to the nearest water resource. We recorded 26 medium- and large-sized mammal species. The mammalian assemblage was structured by veg­etation type and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abiotic effects; Camera-traps; Coastal plain forest; Community ecology; Mammalian species.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832017000200010

Functional differentiation between fish assemblages from forested and deforested streams
Provedor de dados: 83
Autores: Teresa,Fabrício Barreto; Casatti,Lilian; Cianciaruso,Marcus Vinicius.
We tested the hypothesis that streams in deforested areas shelter different fish communities to nearby forested areas, and that these disparities are due to environmental parameters that limit or benefit different species according to their functional traits. We compared the community composition of three south east Brazilian streams flanked by riparian forest with three nearby streams in deforested areas. The following functional traits were considered: diet, habitat use, water flow preference, size, and hypoxia tolerance. Differentiation between forested and deforested streams corresponded with the different contributions of three functional groups. Species reported in the literature to be hypoxia tolerant, and exhibiting a variable combination of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Community ecology; Deforestation; Functional diversity; Traits.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000200361

Ecomorphological relationships of fish assemblages in a trans-Andean drainage, Upper Magdalena River Basin, Colombia
Provedor de dados: 83
Autores: Conde-Saldaña,Cristhian C.; Albornoz-Garzón,Juan G.; López-Delgado,Edwin O.; Villa-Navarro,Francisco A.
ABSTRACT Ecomorphological patterns of the fish community were evaluated in the trans-Andean Alvarado River drainage, Colombia. A total of 29 species using 25 ecomorphological indices were analyzed to test how well the ecomorphological patterns are related to the fish assemblage. Although a significant correlation was found (Mantel test) between morphological attributes and trophic guilds, habitat use and distribution across the altitudinal gradient, only the last two were significantly independent of the phylogenetic relationships (partial Mantel test). Regarding the ecomorphological space, two main trends were defined. First, benthic periphytivores and invertivores were characterized by having dorsal or dorsolateral eyes, labial appendages, depressed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alvarado River drainage; Community ecology; Habitat use; Morphological diversity; Neotropical region.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000400204

Environmental factors predicting fish community structure in two neotropical rivers in Brazil
Provedor de dados: 83
Autores: Súarez,Yzel Rondon; Petrere Júnior,Miguel.
In order to assess the organization patterns of the fish communities in the Jogui and Iguatemi rivers, we collected fish with gill nets tri-monthly from November 1999 to August 2000. Hypostomus ancistroides and Parauchenipterus galeatus were the most abundant species in the Jogui and Iguatemi rivers, respectively. Longitudinal variation was more important than seasonal in determining the species composition in both rivers, and the difference between seasons was not statistically significant. Altitude was the most important factor determining species distribution.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Community ecology; Freshwater fish; Environmental factors; Neotropical rivers.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252007000100008

The influence of environmental variables on the functional structure of headwater stream fish assemblages: a study of two tropical basins in Central Brazil
Provedor de dados: 83
Autores: Carvalho,Rodrigo Assis; Tejerina-Garro,Francisco Leonardo.
We investigated functional patterns of fish assemblages of two adjacent basins (Araguaia and Tocantins) to test whether their headwater stream fish assemblages are more functionally (dis)similar than expected by chance and whether these (dis)similarities are related to differences of environmental conditions between basins. We used an analysis of similarities (ANOSIM) on a functional dissimilarity matrix to test for (dis)similarities between fish assemblages of both basins. We performed RLQ and fourth-corner analyses to determine fish species trait-environment relationship. Our results revealed functional dissimilarities between fish assemblages of both basins and significant species trait-environment relationships, suggesting that environmental conditions...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: ANOSIM; Community ecology; Functional ecology; RLQ analysis; Tocantins-Araguaia river basin.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000200349

Fish assemblage structure is consistent through an annual hydrological cycle in habitats of a floodplain-lake in the Colombian Amazon
Provedor de dados: 83
Autores: Correa,Sandra Bibiana.
I investigated changes in abundance and spatial distribution of medium- and large-sized fishes (&gt;100 mm) in an oxbow lake of the lower Apaporis River, Colombian Amazon, across three seasons (falling, low, and rising water). Fifty-three species in 13 families were collected from six habitats: lagoon channels, stream, flooded forests, isolated shrub patches, muddy beaches, and rocks. Abundance, biomass, and species richness were higher during the rising-water season and lower during falling-water season. Correspondence analysis (CA) showed that fish assemblages were associated to two basic habitat types. One assemblage of fishes was associated with densely vegetated and structurally complex habitats (flooded forest, lagoon channels, stream, and isolated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Community ecology; Population abundance; Apaporis River; Habitat affinity.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000200014

Fish functional groups in a tropical wetland of the Yucatan Peninsula, Mexico
Provedor de dados: 83
Autores: Córdova-Tapia,Fernando; Zambrano,Luis.
ABSTRACT The characterization of species' functional traits is a major step in the understanding and description of communities in natural habitats. The classification of species into functional groups is a useful tool to identify redundancy and uniqueness. We studied the fish community of a pristine freshwater wetland in the Sian Ka'an Biosphere Reserve by analysing two multidimensional functions: food acquisition and locomotion. We investigated changes in the functional group structure between habitats (permanent and temporary pools) and seasons (dry and wet). Six functional groups with different ecological characteristics were detected, two of which had high functional redundancy and three of them were represented by single species with unique...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Community ecology; Environmental filtering; Functional groups; Functional redundancy; Freshwater wetland.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000200208

Morphological diversity of fish along the rio das Velhas, Minas Gerais, Brazil
Provedor de dados: 83
Autores: Junqueira,Nara Tadini; Leal,Cecília Gontijo; Alves,Carlos Bernardo Mascarenhas; Pompeu,Paulo Santos.
The rio das Velhas, located in central Minas Gerais State (Brazil), is a major tributary of the rio São Francisco. Despite several anthropogenic pressures, this basin supports more than 115 fish species. The aim of this study was to compare the morphological space occupied by fish assemblages in four regions (headwaters, upper, middle, and lower course) along the channel of the rio das Velhas. We try to answer the following question: Is there a change in the morphological organization of the fish along the longitudinal gradient of the river? Individuals from 67 species, collected at several sites in the basin from 1999 to 2008, were measured for 11 morphological attributes related to swimming behavior and habitat use. Through the graphs, the first two...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Community ecology; Ichthyofauna; Interspecific variation; Morphometry; Rio São Francisco.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000200017

Floral resources used by insects in a grassland community in Southern Brazil
Provedor de dados: 88
Autores: Pinheiro,Mardiore; Abrão,Bianca Espindola de; Harter-Marques,Birgit; Miotto,Silvia Teresinha Sfoggia.
The goal of the present study was to identify plant species used as food source, the floral resources utilized, and the insects that visit flowers in a grassland community in southern Brazil. The study was carried out in an area of one hectare, located in a grassland formation in the Parque Estadual de Itapuã, State of Rio Grande do Sul, Brazil. The flowering pattern was seasonal, and richness and abundance of insects was higher during the period of high resource availability. Flowers of 106 species of angiosperms (73 genera and 34 families) were used as source of floral resources for 219 species (2,767 specimens) of insects. A total of 91.5% of plant species were visited by bees, 53.8% by flies, 34.9% by wasps, 22.6% by butterflies, and 12.3% by beetles....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anthophilous insects; Asteraceae; Community ecology; Floral resources; Floral visitors.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042008000300011

Diversity of Drosophilidae (Insecta, Diptera) in the Restinga forest of southern Brazil
Provedor de dados: 92
Autores: Mendes,Mayara Ferreira; Valer,Felipe Berti; Vieira,Júlia Gabriela Aleixo; Blauth,Monica Laner; Gottschalk,Marco Silva.
Abstract Although members of Drosophilidae are frequently the topic of ecological studies in Brazil, few have explored Restinga or, until only recently, Pampa biome environments. This study proposes to describe the diversity and temporal variation of the Drosophilidae assemblage from a Restinga forest of Rio Grande do Sul, Brazil. We performed monthly collections from February 2013 to January 2014 using yeasted banana-baited traps. A total of 25,093 individuals of 46 species were sampled. Drosophila simulans and the D. willistoni subgroup were the dominant taxa; D. polymorpha, D. immigrans, D. paraguayensis and Zygothrica orbitalis were of intermediate abundance, and the other 40 species were rare. Based on sampling effort estimators, our collections were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversity analysis; Community ecology; New distribution record; Pampa biome; Taxonomic survey.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262017000300248

Diversity of Calliphoridae and Sarcophagidae (Diptera, Oestroidea) in continuous forest and gaps at different stages of regeneration in the Urucu oilfield in western Brazilian Amazonia
Provedor de dados: 92
Autores: Sousa,José Roberto Pereira de; Esposito,Maria Cristina; Carvalho Filho,Fernando da Silva.
Diversity of Calliphoridae and Sarcophagidae (Diptera, Oestroidea) in continuous forest and gaps at different stages of regeneration in the Urucu oilfield in western Brazilian Amazonia. The diversity of Calliphoridae and Sarcophagidae in continuous forest and gaps at different stages of regeneration was studied in the Urucu river basin, in Coari, state of Amazonas, Brazil. The flies were collected at 16 sampling points, 12 in gaps at different stages of regeneration (early _ C1, mid- C2 and late successional _ C3) and four in continuous forest _ MT. The diversity of blowflies was similar in the two less regenerated habitats (C1 and C2), and lower than that in the late successional (C3) and continuous forests (MT). By contrast, the diversity of flesh flies...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anthropogenic impacts; Blowflies; Community ecology; Flesh flies; Neotropical region.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262011000400014

Environmental heterogeneity: Anuran diversity in homogeneous environments
Provedor de dados: 103
Autores: Silva,Rodrigo Augusto; Martins,Itamar Alves; Rossa-Feres,Denise de C.
The northwestern region of São Paulo was extensively deforested during the agricultural expansion in the last century and only small fragments of the original vegetation cover remained. In this study, we investigated how habitat features influence the composition, richness, and diversity of anurans in environments homogenized by agricultural activities. We sampled monthly six breeding ponds located in pasture areas during twelve months. We recorded ten environmental descriptors for each breeding pond. We found 18 anuran species. The breeding ponds were structurally similar, but species composition differed among them. The environmental descriptors influence varies for each species, as demonstrated by the different associations between species and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amphibia; Community ecology; Environmental indicators; Habitat use; Beta diversity.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000500009

Seasonal variation of ground spiders in a Brazilian Savanna
Provedor de dados: 103
Autores: Mineo,Marina Farcic; Del-Claro,Kleber; Brescovit,Antonio Domingos.
The Brazilian Savanna Ecoregion (Cerrado) is one of the richest biomes in the world, with a characteristic highly seasonal climate a dry season between May and September and a rainy season from October through April. Ground-dwelling spiders from three Cerrado phytophysiognomies, "campo cerrado", "cerrado" and "cerradão", were sampled using pitfall traps during two years, totaling 111 species and 3,529 individuals. The abundance of individuals and species richness was higher during the wet season. Fifty-eight species were captured exclusively during that period, whereas only nineteen were restricted to the dry season. Only two species were found in all samples. The number of juveniles was higher than the number of adults in all phytophysiognomies and in all...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Araneae; Brazil; Community ecology; Seasonality.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000300006

Spatial distribution of bivalve mollusc assemblages in the upwelling ecosystem of the continental shelf of Cabo Frio, Rio de Janeiro, Brazil
Provedor de dados: 104
Autores: Soares-Gomes,Abilio; Fernandes,Flavio da Costa.
Bivalve mollusks of the continental shelf of Cabo Frio upwelling ecosystem were sampled monthly from February 1986 to February 1987 along a 30 to 60 m depth gradient. Mactra petiti Orbigny, 1846, and Tellina gibber Ihering, 1907 were constant species in 30 m; Nucula puelcha Orbigny, 1846, Adrana patagonica Orbigny, 1846, T. petitiana, T. gibber, and Corbula patagonica Orbigny, 1846 in 45 m; and N. puelcha, T. gibber, C. patagonica, and C. caribaea in 60 m. The number of rare species was similar along the depth gradient, ranging from six to ten species. The number of common species was higher in 60 m than in 30 m. Some species showed a continuous distribution but changed the frequency and abundance along the bathymetric gradient. The mean density was higher...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Benthic associations; Community ecology; Macrobenthos; Soft-bottom; Sublittoral.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752005000100009

Similaridade do sítio de vocalização em uma comunidade de anfíbios anuros na região noroeste do Estado de São Paulo, Brasil
Provedor de dados: 104
Autores: Rossa-Feres,Denise de C.; Jim,Jorge.
The breadth and overlap of male call site were determined for 15 anuran species from a temporary pond in Northwestern São Paulo State, Brazil. Four measurements were made at the point of capture of each calling male and the frequency of mating call was determined. There was a high overlap along each variable of call site, but less than 28% of possible species pairs presented high overlap for all variables. Taxonomically related species pairs calling from grass presented spatial and acoustic segregation, while those calling from the graund presented only acoustic segregation. The similarity of call site seems to be not only related to the taxonomic relationships but also with the body size and spatial heterageneity.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anura; Vocalization site; Microhabitat; Community ecology; Similarity at call site.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000200015

Ecologia de comunidades de insetos bentônicos (Ephemeroptera, Plecoptera e Trichoptera), em córregos do parque ecológico de Goiânia, Goiás, Brasil
Provedor de dados: 104
Autores: Oliveira,Leandro Gonçalves; Bispo,Pitágoras da Conceição; Sá,Nívia Custódio de.
Relationships among some abiotic factors (temperature, velocity, flow, conductivity, oxy-reduction potential and pH) and the seazonal density of benthic insects (immature forms) of the orders Ephemeroptera, Plecoptera and Trichoptera at the Parque Ecológico de Goiânia, Goiás are studied. An area of 1m² was sampled and abiotic factors were recorded in 4 sites from August/1994 to July/1995. The faunistic composition was 75% Ephemeroptera, 1% Plecoptera and 24% Trichoptera. The data suggest the water velocity and flow as the main factors that determined the aquatic insects abundance.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Community ecology; Aquatic insects; Lotic; Abiotic factors.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751997000400010

Diets of tadpoles from a temporary pond in southeastern Brazil (Amphibia, Anura)
Provedor de dados: 104
Autores: Rossa-Feres,Denise de C.; Jim,Jorge; Fonseca,Mariluce Gonçalves.
The diet of tadpoles of 13 anuran species was determined to verify whether food resource partitioning occurs and whether the degree of diet similarity is related to taxonomic affinity. Tadpoles of all species studied were mainly herbivorous, except for these of Leptodactylus fuscus (Schneider, 1799) which were mycophagous. Although some species had exclusive items in their diet, most tadpole species ingested the same items, but differed in the amount of each item consumed. Two guilds were found: tadpoles that feed on diatoms on the pond bottom, and tadpoles that feed on Oedogonium Link, 1820 algae in midwater. Diet similarity was related to the taxonomic relationship, microhabitat and feeding behavior of tadpoles indicating that the community organization...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Community ecology; Food partitioning; Microalgae.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752004000400003

Ecologia de comunidade de Bethylidae (Hymenoptera, Chrysidoidea) da Reserva Ecológica do Roncador, Brasília, Distrito Federal, Brasil
Provedor de dados: 104
Autores: Azevedo,Celso Oliveira; Helmer,José Luiz.
Bethylidae specimens from the Reserve were studied in its ecological and faunistic aspects. The material was collected by Malaise and Window traps simultaneously in ten different areas of the Reserve during four years. The total number of genera and specimens were analyzed. Indices of diversity and evenness were used for characterizing the community ecology. Clustering analysis of localities and genera were provided. Nine genera of Bethylidae were found in the Reserve, being Pseudisobrachium Kieffer, 1904 and Apenesia Westwood, 1874 the most common ones. Window trap was more efficient than Malaise trap in terms of genus diversity.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hymenoptera Bethylidae; Community ecology; Diversity; Cerrado.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000400021

Trap efficiency evaluation for small mammals in the southern Amazon
Provedor de dados: 36
Autores: SANTOS-FILHO,Manoel dos; LÁZARI,Patrick Ricardo DE; SOUSA,Cícero Pedro Farias de; CANALE,Gustavo Rodrigues.
The effectiveness of ecological researches on small mammals strongly depends on trapping techniques to survey communities and populations accurately. The main goal of this study was to assess the efficiency of three types of traps (Sherman, Tomahawk and Pitfall) to capture non-volant small mammals. We installed traps in 22 forest fragments in the southern Brazilian Amazonia. We captured 873 individuals belonging to 21 species; most of the individuals (N = 369) and species (N = 19) were trapped using Pitfalls, followed by Shermans (N = 271 individuals; N = 15 species) and Tomahawks (N = 233 individuals; N = 15 species). Pitfalls trapped a richer community subset of small mammals than the two other types of traps, and a more abundant community subset than...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fragments; Sampling techniques; Abundance; Community ecology.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672015000200187

Edge effect on vascular epiphytic composition in a fragment of Atlantic Forest in northeastern Brazil
Provedor de dados: 39
Autores: Dias-Terceiro,Randolpho Gonçalves; Peixoto,Gabriela Marques; Gomes,Vitor Serrano; Menezes,Marcelo Costa; Neco,Eudécio Carvalho; Pessoa,Tainá Sherlakyann Alves; Fabricante,Juliano Ricardo; Albuquerque,Manoel Bandeira.
Epiphytes are common in the canopy of temperate and tropical forests, where they substantially contribute to species diversity and to key ecosystem processes. However, little is known about the effects caused by deforestation on this group of species, especially in northeastern Brazil, an area experiencing intense anthropogenic pressure. This study aimed to evaluate the effect of environmental variables on the structure of assemblies of vascular epiphytes in a fragment of open ombrophilous forest, Areia, northeastern Brazil. Sixty 10 × 10 m sampling plots were installed to cover different environments within the fragment. The relationship between environmental variables and species composition was evaluated by means of a generalized linear mixed model. The...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Brejo de altitude; Community ecology; Epiphytism; Environmental factors; Forest fragmentation.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000200270

Diversity and distribution of the bryophyte flora in montane forests in the Chapada Diamantina region of Brazil
Provedor de dados: 39
Autores: Valente,Emilia de Brito; Pôrto,Kátia Cavalcanti; Bastos,Cid José Passos; Ballejos-Loyola,Jana.
Bryophytes constitute an important component of tropical rain forests, which provide microhabitats favorable for their establishment. Bryophytes are also quite responsive to changes in microclimate, which makes them good bioindicators. This study aimed to determine the diversity and distribution of bryophytes in upper and lower montane forests of the Chapada Diamantina region of the state of Bahia, Brazil. To that end, we studied community aspects such as richness, diversity, substrates colonized, life forms and floristic similarity between areas and regions. In 2007 and 2008, we collected specimens from six forest sites, located from the north to the south of the Chapada Diamantina region. We identified a total of 205 infrageneric taxa. In comparison with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mosses; Liverworts; Community ecology; Elevational gradient.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300008

Lizard assemblages on sandy coastal plains in southeastern Brazil: An analysis of occurrence and composition, and the role of habitat structure
Provedor de dados: 42
Autores: OLIVEIRA,JANE C.F.; PEREIRA-RIBEIRO,JULIANE; WINCK,GISELE R.; ROCHA,CARLOS F.D.
Abstract Data on the structure of lizard communities in the different biomes and ecosystems of Brazil are still limited. In this study, we related the species richness, abundance and the spatial occurrence of lizards to the structure of the vegetation found on the coast of the state of Espírito Santo, southeastern Brazil, to determine whether habitat influences the structure of lizard communities. We conducted fieldwork in 2012, 2013 and 2014, collecting data in standardized samples. We analyze whether variables of vegetation structure influenced species richness and abundance, using Generalized Linear Models (GLMs). We recorded 12 lizard species from eight families. In general, species richness and abundance were similar among sites. Locally, we recorded...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Community ecology; Community structure; Mesohabitat; Squamata.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000100602

Composition and ecology of a snake assemblage in an upland forest from Central Amazonia
Provedor de dados: 42
Autores: MASSELI,GABRIEL S.; BRUCE,ALLAN D.; SANTOS,JUCIMARA G. DOS; VINCEN,TIMOTHY.; KAEFER,IGOR L.
Abstract: Most species of Amazonian snakes have wide geographic distributions. However, local environmental factors influence the formation of assemblages in different localities. In this study, we investigated the composition of the assemblage and the effect of environmental variables on the distribution of the species inhabiting an upland forest in the Experimental Farm area of the Federal University of Amazonas in Manaus, Brazil. Data collection was carried out in 24 standardized plots. Each plot was sampled four times between July 2015 and April 2017 by active search method. We recorded 83 individuals from 29 species belonging to six families. The richness in the study area corresponded to 78% of the snake species and 100% of the families previously...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Community ecology; Manaus; RAPELD; Serpentes; Squamata.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000200603

Fish species diversity in headwaters streams of Paraguay and Paraná Basins
Provedor de dados: 52
Autores: Súarez,Yzel Rondon; Valério,Sabrina Bigatão; Tondado,Karina Keyla; Florentino,Alexandro Cezar; Felipe,Thiago Rota Alves; Ximenes,Lidiani Queli Lubas; Lourenço,Luzia da Silva.
The influence of spatial, temporal and environmental factors on fish species diversity in headwater streams in Paraguay and Paraná basins, Brazil was examined. A total of 4,605 individuals were sampled, distributed in 60 species. The sampled streams in Paraná basin presented a larger total species richness (42) than Paraguay streams (40). However the estimated richness was larger in Paraguay basin (53) than Paraná streams (50). The streams of Paraná basin had a greater mean species richness and evenness, while more individuals per sample were found in the Paraguay basin. Difference between the sub-basins were found in the Paraguay basin, while for the basin of Paraná, richness and evenness vary significantly between the sub-basins, but the number of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Community ecology; Fish diversity; Streams; Paraguay Basin; Paraná Basin.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000700014

Composition and seasonal variation of brachyura and anomura (Crustacea, Decapoda) associated with brown mussel farms at Praia da Cocanha, Brazil
Provedor de dados: 52
Autores: Bernadochi,Ligia Coletti; Silvestri,Fausto; Turra,Alexander.
The composition and seasonal variation of brachyuran and anomuran species associated with mussel farms were evaluated at Praia da Cocanha, São Paulo between May 2007 and February 2008. Nine mussel ropes were sampled at random in each quarter, and 1,208 organisms were identified, comprising five families and 28 species. The most numerous species was the porcellanid Pachycheles laevidactylus (18.5%), followed by the xanthids Acantholobulus schmitti (16.6%), Hexapanopeus paulensis (11.3%), Panopeus americanus (10.2%), and Menippe nodifrons (8.4%). The exotic crab Charybdis hellerii was recorded throughout the study period. The ecological descriptors, except Pielou evenness index, varied significantly over the time. The highest abundance and diversity of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Associated fauna; Mussel culture; Perna perna; Crustaceans; Community ecology.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000400010

Fauna living in colonies of Mussismilia hispida (Verrill) (Cnidaria: Scleractinia) in four South-eastern Brazil islands
Provedor de dados: 52
Autores: Nogueira,João Miguel de Matos.
Colonies of Mussismilia hispida were collected in four south-eastern Brazil islands and fixed in formalin. Volume, living and basal areas of each coral head were measured. Animals found over, under and inside the corals were sorted, resulting in 9657 specimens belonging to more than 130 taxa. The underside of the colonies was occupied by bivalves and colonial forms of sponges, bryozoans and ascidians. On the living surface, barnacles and cryptochiridean crabs were detected. The endolithic animals included polychaetes, bivalves and sipunculid worms. Most of the animals collected were vagile microcrustaceans. In general, the corals in this ecosystem: (1) act as a nursery place for the community; (2) provide protection for many species also found in other...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Associated fauna; Community ecology; Corals; Mussismilia hispida; South-eastern Brazil.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000300014