Consulta: subjectFacets:"Movement"
Registros recuperados: 12
Data/hora: 11/06/2024 04:49:36

Winter Responses of Forest Birds to Habitat Corridors and Gaps
Provedor de dados: 7
Autores: St. Clair, Colleen Cassady; University of Alberta; cstclair@ualberta.ca; Hannon, Susan; University of Alberta; Sue.Hannon@ualberta.ca.
Forest fragmentation and habitat loss may disrupt the movement or dispersal of forest-dwelling birds. Despite much interest in the severity of these effects and ways of mitigating them, little is known about actual movement patterns in different habitat types. We studied the movement of wintering resident birds, lured by playbacks of mobbing calls, to compare the willingness of forest birds to travel various distances in continuous forest, along narrow corridors (fencerows), and across gaps in forest cover. We also quantified the willingness of Black-capped Chickadees (Poecile atricapillus) to cross gaps when alternative forested detour routes were available. All species were less likely to respond to the calls as distance increased to 200 m, although...
Tipo: Peer-Reviewed Reports
Palavras-chave: Black-capped Chickadee; Corridor; Detour trials; Dispersal; Downy Woodpecker; Forest fragmentation; Gap width; Hairy Woodpecker; Movement; Poecile atricapillus; Picoides pubescens; Picoides villosus; Sitta carolinensis; White-breasted Nuthatch.
Ano: 1998

Behavioral Responses of Northern Leopard Frogs (Rana pipiens) to Roads and Traffic: Implications for Population Persistence
Provedor de dados: 7
Autores: 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

Mechanisms Affecting Population Density in Fragmented Habitat
Provedor de dados: 7
Autores: 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

Efeito da caça no movimento e na área de uso dos jacarés, Pantanal Sul.
Provedor de dados: 14
Autores: 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: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
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

Novel use of pop‑up satellite archival telemetry in sawsharks: insights into the movement of the common sawshark Pristiophorus cirratus (Pristiophoridae)
Provedor de dados: 5
Autores: Burke, Patrick J; Mourier, Johann; Gaston, Troy F; Williamson, Jane E.
Background Understanding movement patterns of a species is vital for optimising conservation and management strategies. This information is often difficult to obtain in the marine realm for species that regularly occur at depth. The common sawshark (Pristiophorus cirratus) is a small, benthic associated elasmobranch species that occurs from shallow to deep-sea environments. No information is known regarding its movement ecology. Despite this, P. cirrata are still regularly landed as nontargeted catch in the south eastern Australian trawl fisheries. Three individuals were tagged with pop-up satellite archival tags (PSATs) off the coast of Tasmania, Australia, to test the viability of satellite tagging on these small elasmobranchs and to provide novel...
Tipo: Text
Palavras-chave: Elasmobranch; Satellite telemetry; Diel vertical migration; Tagging; Pristiophoridae; Australia; Movement.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00632/74399/74101.pdf

Predicting Geographic Ranges of Marine Animal Populations Using Stable Isotopes: A Case Study of Great Hammerhead Sharks in Eastern Australia
Provedor de dados: 5
Autores: 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

A state-space model to derive bluefin tuna movement and habitat from archival tags
Provedor de dados: 5
Autores: 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

Modeling the emergence of migratory corridors and foraging hot spots of the green sea turtle
Provedor de dados: 5
Autores: 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

Foraging behavior links climate variability and reproduction in North Pacific albatrosses
Provedor de dados: 5
Autores: 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

Defining the stock structures of key commercial tunas in the Pacific Ocean II: Sampling considerations and future directions
Provedor de dados: 5
Autores: 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

Variación temporal de la comunidad de peces en un canal de  comunicación al mar en Cayo Coco, Cuba
Provedor de dados: 20
Autores: 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

Effects of physical exercise on skeletal muscles of rats with cerebral ischemia
Provedor de dados: 56
Autores: 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