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Registros recuperados: 53 | |
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Archarnbault, Benoit; Le Pape, Olivier; Baulier, Loic; Vermard, Youen; Veron, Matthieu; Rivot, Etienne. |
We explore how alternative hypotheses on the degree of mixing among local subpopulations affect statistical inferences on the dynamics and stock assessment of a harvested flatfish population, namely, the common sole population in the Eastern Channel (ICES area VIId). The current paradigm considers a single, well-mixed, spatially homogeneous population with juveniles from all coastal nursery grounds along the French and UK coasts that contribute to a single adult population and one pool of eggs. Based on the available data and ecological knowledge, we developed a spatial Bayesian integrated life-cycle model that consists of three subpopulations (one near the UK coast and two near the French coast, denoted UK, West FR and East FR, respectively) supported by... |
Tipo: Text |
Palavras-chave: Solea solea; Spatial life-cycle model; Coastal nurseries; Connectivity; Stock assessment; Hierarchical bayesian model. |
Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00333/44430/44231.pdf |
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Almeida-Gomes,Mauricio; Rocha,Carlos Frederico Duarte; Vieira,Marcus Vinícius. |
In this study we evaluated how anuran species were distributed in riparian habitats along two large rivers. Sampling was carried out between January and March 2012 in the municipality of Cachoeiras de Macacu, state of Rio de Janeiro. We delimited 20 plots along each river, ten in portions inside the forest of the Reserva Ecológica de Guapiaçu (REGUA), and with comparatively greater amount of forest cover, and ten outside REGUA, with comparatively lesser forest cover surrounding the rivers. We recorded 70 individuals from 14 frog species in the Manoel Alexandre River and 63 individuals from 15 frog species in the Guapiaçu River. The most abundant species in both rivers was Cycloramphus brasiliensis (Steindachner, 1864), and it was more abundant in sections... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amphibian conservation; Aquatic environments; Connectivity; Frog species; Riparian forests. |
Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702015000100009 |
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Biggs, Duan; ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville Australia; ancientantwren@gmail.com; Biggs, Reinette (Oonsie); Stockholm Resilience Centre, Stockholm University, Sweden; oonsie.biggs@stockholmresilience.su.se; Dakos, Vasilis; Department of Aquatic Ecology & Water Quality Management, Wageningen University; vasileios.dakos@wur.nl; Scholes, Robert J; CSIR Natural Resources and the Environment, Pretoria, South Africa; BScholes@csir.co.za; Schoon, Michael; School of Human Evolution and Social Change, Arizona State University; Michael.Schoon@asu.edu. |
An increase in the frequency and intensity of environmental crises associated with accelerating human-induced global change is of substantial concern to policy makers. The potential impacts, especially on the poor, are exacerbated in an increasingly connected world that enables the emergence of crises that are coupled in time and space. We discuss two factors that can interact to contribute to such an increased concatenation of crises: (1) the increasing strength of global vs. local drivers of change, so that changes become increasingly synchronized; and (2) unprecedented potential for the propagation of crises, and an enhanced risk of management interventions in one region becoming drivers elsewhere, because of increased connectivity. We discuss the... |
Tipo: Peer-Reviewed Insight |
Palavras-chave: Concatenation; Connectivity; Crisis; Disaster; Food price crisis; Governance; Learning; Thresholds. |
Ano: 2011 |
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Thiele,Sabrina Campos; Milcharek,Oscar; Santos,Fábio Luis dos; Kaminski,Lucas Augusto. |
This paper presents a list of species of butterflies (Lepidoptera: Hesperioidea and Papilionoidea) sampled in Porto Mauá municipality (27°34’S, 28°40’W), Rio Grande do Sul State, Brazil. Sampling was carried out monthly between March 2008 and March 2009. After 204 net-hours of sampling effort, a total of 1,993 individuals from 253 species were recorded. With a single additional expedition, eight new species were added, reaching a total of 261 species recorded in the region of Porto Mauá. These new reports and the species accumulation curves may indicate a much richer fauna. The distribution of richness among butterfly families is compared with other inventories in seasonal semi-deciduous forest areas in the Atlantic Forest. We also discuss the importance... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic Forest; Connectivity; Conservation; Seasonal semi-deciduous forest; Species richness. |
Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032014000200211 |
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Pereira,Pedro H.C.; Ferreira,Beatrice P.; Rezende,Sérgio M.. |
Seagrass beds are used by juvenile fishes in different ways, generally as nursery sites, shelter from predators, reducing competition and increasing availability of food resources, thus establishing a relationship of connectivity with other ecosystems. In the present study, the community structure of the ichthyofauna associated with seagrass beds on the Formoso River (Pernambuco - Brazil) was evaluated during the winter of 2008. Twenty-seven manual trawls (15 daytime and 12 nighttime) were performed, and a total of 358 fishes belonging to 18 families, 21 genus and 25 species were collected. The Catch Per Unit Effort (CPUE) by trawling average was 13.5 and 4.95 individuals per species per trawl. The most abundant families were Scaridae (n = 111),... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Connectivity; Seagrass beds; Reef fishes; Diversity. |
Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000300009 |
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Huret, Martin; Vandromme, Pieter; Petitgas, Pierre; Pecquerie, Laure. |
Connectivity during early life stages of pelagic fish, defined here by survival probability between spawning and early juvenile habitats, depends on a combination of sufficient food availability and low predator encounter along drift trajectories. For anchovy in the Bay of Biscay, larval transport experiments throughout the spawning season suggest accumulation of early juveniles in the offshore area of the southern Bay, as well as retention over the mid-shelf at mid-latitude. However, late summer-early autumn surveys suggest presence of juveniles only in the former region. From this observation, we set up a bioenergetic individual based model to test for the effect of food availability on survival patterns. The model couples a Lagrangian transport module... |
Tipo: Text |
Palavras-chave: Connectivity; Larval IBM; Bioenergetics; Zooplankton; Bay of Biscay; European anchovy. |
Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00105/21655/19237.pdf |
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Moss, Jessica; Behringer, Donald; Shields, Jeffrey D.; Baeza, Antonio; Aguilar-perera, Alfonso; Bush, Phillippe G.; Dromer, Clement; Herrera-moreno, Alejandro; Gittens, Lester; Matthews, Thomas R.; Mccord, Michael R.; Schaerer, Michelle T.; Reynal, Lionel; Truelove, Nathanial; Butler, Mark J.. |
The pathogenic virus Panulirus argus virus 1 (PaV1) was first discovered in Caribbean spiny lobsters Panulirus argus from the Florida Keys (USA) in 1999 and has since been reported in Belize, Mexico, and Cuba; its distribution in the wider Caribbean is unknown. We collected tissue samples from adult spiny lobsters from 30 locations in 14 countries bordering the Caribbean Sea and used molecular diagnostics to assay for the presence of PaV1. PaV1 occurred primarily in the northern areas of the Caribbean, where its prevalence was highest. The virus was not found in lobsters from the southeastern Caribbean, and its prevalence was lowest in the southwestern Caribbean. DNA sequence analysis was performed on a fragment of the viral DNA to examine the genetic... |
Tipo: Text |
Palavras-chave: Spiny lobster; Disease; Epidemiology; Connectivity. |
Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00144/25503/23698.pdf |
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Shimabukuro, Mauricio; Carrerette, Orlemir; Alfaro-lucas, Joan Manel; Rizzo, Alexandra Elaine; Halanych, Kenneth M.; Sumida, Paulo Yukio Gomes. |
Whale falls are important environments contributing to biodiversity, connectivity and evolutionary novelty in deep-sea ecosystem. Notwithstanding, most of this knowledge is based in studies from NE Pacific basin. Interestingly, the only known natural whale fall on the SW Atlantic has faunal composition affinities with carcasses from other deep-ocean basins. In this carcass, annelid worms belonging to Hesionidae are abundant and species-rich, and include some shared species with NE Pacific Ocean. Here we evaluate the diversity of Hesionidae on the SW Atlantic using new information of implanted whale bones and explore whether some species have interbasin distribution or if they represent cryptic species in different basins. We described, using morphological... |
Tipo: Text |
Palavras-chave: Deep sea; Biodiversity; Cryptic species; Biogeography; Connectivity. |
Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00509/62081/66263.pdf |
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Jordão,Juliana Costa; Bondioli,Ana Cristina Vigliar; Guebert,Flavia Maria; Thoisy,Benoit de; Toledo,Lurdes Foresti de Almeida. |
Sea turtles are marine reptiles that undertake long migrations through their life, with limited information regarding juvenile stages. Feeding grounds (FGs), where they spend most of their lives, are composed by individuals from different natal origins, known as mixed stock populations. The aim of this study was to assess genetic composition, natal origins and demographic history of juvenile green turtles (Chelonia mydas) at the Paranaguá Estuarine Complex (PEC), Brazil, considered a Natural World Heritage site. Tissue samples of stranded animals were collected (n = 60), and 700 bp mitochondrial DNA sequences were generated and compared to shorter sequences from previously published studies. Global exact tests of differentiation revealed significant... |
Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Chelonia mydas; MtDNA; Feeding grounds; Mixed stock analysis; Connectivity. |
Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572015000300346 |
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Flores Barrera, César Iván. |
El jaguar es el felino más grande del continente Americano, por lo que tiene demandas alimenticias de grandes presas y hábitats extensos, esto propicia conflictos con los humanos debido a la fragmentación de su hábitat. En México se encuentra enlistado como en peligro de extinción en la NOM-059-SEMARNAT-2010. Por lo que es importante determinar si hay parches de hábitat que sean utilizados por el jaguar como corredores dentro de la Sierra Madre Oriental; específicamente, en la región que hay entre la Sierra del Abra-Tanchipa y la Sierra de Cerro Alto. El objetivo de este estudio fue determinar la existencia de un corredor para jaguar (Panthera onca) entre las Sierras del Abra-Tanchipa y Cerro Alto, del municipio de Ciudad Valles, San Luis Potosí. El... |
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Palavras-chave: Jaguar; Corredores; Conectividad; Hábitat; Fragmentación; Corridors; Connectivity; Habitat; Fragmentation; Ganadería; Maestría. |
Ano: 2014 |
URL: http://hdl.handle.net/10521/2385 |
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Avigliano,Esteban; Fortunato,Roberta Callicó; Biolé,Fernanda; Domanico,Alejandro; Simone,Silvia De; Neiff,Juan J.; Volpedo,Alejandra V.. |
ABSTRACT The streaked prochilod Prochilodus lineatus (Valenciennes) is a commercially freshwater species from South America, distributed in the Plata basin. In the present work the morphometry (circularity, rectangularity, form factor, OL/OW and ellipticity indices) and chemistry (Sr:Ca, Ba:Ca, Zn:Ca) of lapilli otolith, and geometric morphometry of scales of streaked prochilod juveniles, in two sites in the Plata basin (Uruguay River and Estrella Wetland), were compared to determine if they are area-specific and to identify possible breeding areas. Otolith Ba:Ca ratios was 0.017±0.003 mmol/mol for Uruguay River while for Estrella Wetland individuals was bellow the detection limits. Zn:Ca ratios tended to be higher for the latter (0.03±0.002 mmol/mol).... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Connectivity; Geocrochemistry; Geometric morphometrics; Plata Basin; Streaked prochilod. |
Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000300207 |
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Petitgas, Pierre; Rijnsdorp, Adriaan D.; Dickey-collas, Mark; Engelhard, Georg H.; Peck, Myron A.; Pinnegar, John; Drinkwater, Kenneth F.; Huret, Martin; Nash, Richard. |
To anticipate the response of fish populations to climate change, we developed a framework that integrates requirements in all life stages to assess impacts across the entire life cycle. The framework was applied on plaice (Pleuronectes platessa) and Atlantic herring (Clupea harengus) in the North Sea, Atlantic cod (Gadus morhua) in the Norwegian/Barents Seas and European anchovy (Engraulis encrasicolus) in the Bay of Biscay. In each case study, we reviewed habitats required by each life stage, habitat availability, and connectivity between habitats. We then explored how these could be altered by climate change. We documented environmental processes impacting habitat availability and connectivity, providing an integrated view at the population level and in... |
Tipo: Text |
Palavras-chave: Connectivity; Habitat; Eco-physiology; Anchovy; Herring; Plaice; Cod. |
Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00118/22935/20798.pdf |
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Registros recuperados: 53 | |
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