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| Registros recuperados: 12 | |
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| Royer, Francois; Fromentin, Jean-marc; Gaspar, P. |
| Archival tagging provides a unique way to study the spatial dynamics and habitat of pelagic fish. This technique generates lagrangian data of a particular type in marine ecology: although highly informative about processes at different scales (e.g. horizontal movements versus diving behaviour), such data are impaired by location errors and the lack of combination with actual environmental variability. The present paper introduces a framework for modelling bluefin tuna movement in relation to its habitat, using records of light, depth and temperature from archival tags. Based on data assimilation concepts and methods, we show how an explicit formulation of the observation process and the statistics of external variables (e.g. ambient temperature) can... |
| Tipo: Text |
Palavras-chave: Tag; Archival; Habitat; Movement; Bluefin tuna. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-671.pdf |
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| Bouchard, Julie; Geomatics and Landscape Ecology Research Lab, Department of Biology, Carleton University; julie.bouchard@mail.mcgill.ca; Ford, Adam T.; Geomatics and Landscape Ecology Research Lab, Department of Biology, Carleton University; atford@gmail.com; Eigenbrod, Felix E; Geomatics and Landscape Ecology Research Lab, Department of Biology, Carleton University; felix.eigenbrod@gmail.com; Fahrig, Lenore; Geomatics and Landscape Ecology Research Lab, Department of Biology, Carleton University; lenore_fahrig@carleton.ca. |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Breeding dispersal; Habitat fragmentation; Highway; Migration; Movement; Road avoidance; Road mortality. |
| Ano: 2009 |
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| Moore, Bradley R.; Adams, Tim; Allain, Valerie; Bell, Johann D.; Bigler, Mark; Bromhead, Don; Clark, Sangaa; Davies, Campbell; Evans, Karen; Faasili, Ueta; Farley, Jessica; Fitchett, Mark; Grewe, Peter M.; Hampton, John; Hyde, John; Leroy, Bruno; Lewis, Antony; Lorrain, Anne; Macdonald, Jed I.; Marie, Amandine D.; Minte-vera, Carolina; Natasha, Janice; Nicol, Simon; Obregon, Pablo; Peatman, Thomas; Pecoraro, Carlo; Phillip, N. Bradley; Pilling, Graham M.; Rico, Ciro; Sanchez, Caroline; Scott, Robert; Scutt Phillips, Joe; Stockwell, Brian; Tremblay-boyer, Laura; Usu, Thomas; Williams, Ashley J.; Smith, Niamh. |
| Delineating the stock structure of highly-mobile, wide-ranging fishes subject to exploitation is a challenging task, yet one that is fundamental to optimal fisheries management. A case in point are stocks of skipjack tuna (Katsuwonus pelamis), yellowfin tuna (Thunnus albacares), bigeye tuna (Thunnus obesus) and albacore tuna (Thunnus alalunga) in the Pacific Ocean, which support important commercial, artisanal, subsistence, and recreational fisheries, and contribute roughly 70 % of global commercial tuna catches. Although some spatial and temporal structuring is recognised within these stocks, growing evidence from a range of approaches suggests that the stock structure of each tuna species is more complex than is currently assumed in both stock assessment... |
| Tipo: Text |
Palavras-chave: Tuna; Pacific Ocean; Movement; Spatial dynamics; Stock structure; Fisheries management. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00630/74168/73773.pdf |
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| CAMPOS, Z.; COUTINHO, M.; MOURÃO, G.; MAGNUSSON, W.. |
| Na década de 80, a caça ilegal predominava no Pantanal, principalmente na área de rios, onde muitos jacarés foram mortos e suas carcaças encontradas em acampamentos dentro dos capões de mata. Caçadores mataram sete machos marcados que saíram da área de lagos para os rios. Na área de rios, as áreas usadas pelos cinco machos em locais não-sujeitos à caça. similares das usadas, pelos outros cinco machos em locais não -sujeitos à caça. O movimento de indivíduos de área não caçadas poe ser especialmente importante para o recrutamento de indivíduos à população em áreas caçadas, em longo prazo. |
| Tipo: Folhetos |
Palavras-chave: Caça clandestina; Jacaré-do-Pantanal; Movement; Harvest; Management; Manejo; Movimento; Caiman; Pantanal. |
| Ano: 2005 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/812028 |
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| Melo,R.T.R.; Damázio,L.C.M.; Lima,M.C.; Pereira,V.G.; Okano,B.S.; Monteiro,B.S.; Natali,A.J.; Carlo,R.J. Del; Maldonado,I.R.S.C.. |
| Physical exercise is a known preventive and therapeutic alternative for several cerebrovascular diseases. Therefore, the objective of the present study was to evaluate the motor performance and histomorphometry of the biceps brachii, soleus, and tibialis anterior muscles of rats submitted to a treadmill training program prior to the induction of cerebral ischemia via occlusion of the middle cerebral artery (OMCA). A total of 24 Wistar rats were distributed into four groups: Sham-Sed: sedentary control animals (n=6), who underwent sham surgery (in which OMCA did not occur); Sham+Ex: control animals exercised before the sham surgery (n=6); I-Sed: sedentary animals with cerebral ischemia (n=6); and I+Ex: animals exercised before the induction of ischemia... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Muscles; Cerebral ischemia; Exercise; Movement; Rats; Atrophy. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2019001200607 |
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| Thorne, Lesley H.; Hazen, Elliott L.; Bograd, Steven J.; Foley, David G.; Conners, Melinda G.; Kappes, Michelle A.; Kim, Hyemi M.; Costa, Daniel P.; Tremblay, Yann; Shaffer, Scott A.. |
| Background: Climate-driven environmental change in the North Pacific has been well documented, with marked effects on the habitat and foraging behavior of marine predators. However, the mechanistic linkages connecting climate-driven changes in behavior to predator populations are not well understood. We evaluated the effects of climate-driven environmental variability on the reproductive success and foraging behavior of Laysan and Black-footed albatrosses breeding in the Northwest Hawaiian Islands during both brooding and incubating periods. We assessed foraging trip metrics and reproductive success using data collected from 2002-2012 and 1981-2012, respectively, relative to variability in the location of the Transition Zone Chlorophyll Front (TZCF, an... |
| Tipo: Text |
Palavras-chave: Albatross; Movement; Reproductive success; Climate; Environmental variability. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00627/73882/73719.pdf |
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| Tischendorf, Lutz; ELUTIS Modelling and Consulting Inc.; lutz.tischendorf@gmx.net; Grez, Audrey; Universidad de Chile; agrez@uchile.cl; Fahrig, Lenore; Carleton University; lfahrig@ccs.carleton.ca. |
| We conducted a factorial simulation experiment to analyze the relative importance of movement pattern, boundary-crossing probability, and mortality in habitat and matrix on population density, and its dependency on habitat fragmentation, as well as inter-patch distance. We also examined how the initial response of a species to a fragmentation event may affect our observations of population density in post-fragmentation experiments. We found that the boundary-crossing probability from habitat to matrix, which partly determines the emigration rate, is the most important determinant for population density within habitat patches. The probability of crossing a boundary from matrix to habitat had a weaker, but positive, effect on population density. Movement... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Boundary crossing; Emigration; Habitat fragmentation; Immigration; Modeling; Movement; Population density; Simulation; Time scale. |
| Ano: 2005 |
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| Dalleau, Mayeul; Kramer‐schadt, Stephanie; Gangat, Yassine; Bourjea, Jerome; Lajoie, Gilles; Grimm, Volker. |
| Environmental factors shape the spatial distribution and dynamics of populations. Understanding how these factors interact with movement behavior is critical for efficient conservation, in particular for migratory species. Adult female green sea turtles, Chelonia mydas, migrate between foraging and nesting sites that are generally separated by thousands of kilometers. As an emblematic endangered species, green turtles have been intensively studied, with a focus on nesting, migration, and foraging. Nevertheless, few attempts integrated these behaviors and their trade‐offs by considering the spatial configurations of foraging and nesting grounds as well as environmental heterogeneity like oceanic currents and food distribution. We developed an... |
| Tipo: Text |
Palavras-chave: Connectivity; Corridors; Individual-based model; Migration; Movement; Sea turtle. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00512/62337/66597.pdf |
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| Raoult, Vincent; Trueman, Clive N; Kingsbury, Kelsey M; Gillanders, Bronwyn M; Broadhurst, Matt K; Williamson, Jane E; Nagelkerken, Ivan; Booth, David J; Peddemors, Victor; Couturier, Lydie Ir; Gaston, Troy F. |
| Determining the geographic range of widely dispersed or migratory marine organisms is notoriously difficult, often requiring considerable costs and typically extensive tagging or exploration programs. While these approaches are accurate and can reveal important information on the species, they are usually conducted on only a small number of individuals and can take years to produce relevant results, so alternative approaches may be preferable. The presence of latitudinal gradients in stable carbon isotope compositions of marine phytoplankton offers a means to quickly determine likely geographic population ranges of species that rely on productivity from these resources. Across sufficiently large spatial and temporal scales, the stable carbon isotopes of... |
| Tipo: Text |
Palavras-chave: Habitat range population distributions; Movement; Species distribution model; Sharks; Manta rays; Stable isotopes; Tracking; Isoscape. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00662/77363/78935.pdf |
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| Salvat-Torres, H. M.; González-Sansón, G.; Salvat Quesada, M.; Pina-Amargós, F.. |
| Este trabajo analiza como varía en el tiempo la abundancia y distribución de los peces del canal de comunicación al mar de Laguna Larga, Cayo Coco, Cuba. El canal se dividió en dos zonas separadas cada una por 30 m. Se realizaron censos visuales mediante buceo libre, consignándose la abundancia, talla y anotaciones sobre la conducta de peces en tres años. Se cuantificó el número de individuos y la talla estimada de peces por especies. Para caracterizar el hábitat se midió el área de sombra y refugio del canal. Se calculó la densidad, talla media, biomasa y la frecuencia relativa de la ictiofauna. Se determinaron 52 especies pertenecientes a 24 familias de peces. Las comunidades de peces del canal estudiado varían espacial y temporalmente. La... |
| Tipo: Journal Contribution |
Palavras-chave: Mangroves; Movement; Fish; Temporal variations. |
| Ano: 2013 |
URL: http://hdl.handle.net/1834/4930 |
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| Registros recuperados: 12 | |
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