Results 21 to 30 of about 128,831 (308)

Migratory lineages rapidly evolve larger body sizes than non-migratory relatives in ray-finned fishes [PDF]

Proceedings of the Royal Society B: Biological Sciences, 2020
Migratory animals respond to environmental heterogeneity by predictably moving long distances in their lifetime. Migration has evolved repeatedly in animals, and many adaptations are found across the tree of life that increase migration efficiency. Life-history theory predicts that migratory species should evolve a larger body size than non-migratory ...
Michael D. Burns, Devin D. Bloom
openaire   +2 more sources

Influence of open and closed river systems on the migrations of two northern New Zealand populations of banded kokopu (Galaxias fasciatus) [PDF]

, 2012
Otolith microchemical analysis by laser ablation inductively coupled mass spectrometry (ICP-MS) was used to investigate the migratory life histories of banded kokopu (Galaxias fasciatus) in two streams on the North Island of New Zealand.
Hicks, Brendan J., Tana, Raymond
core   +2 more sources

Marginal lagoons: natural nurseries of migratory fish

Conexão Ciência (Online), 2021
As lagoas marginais constituem ambiente complexo que potencializa o sucesso reprodutivo das espécies migratórias, fornecendo abrigo e recursos. Nosso estudo avalia o papel dessas lagoas no recrutamento de espécies migratórias no rio Jequitaí. Durante um ano, foram realizadas amostragens mensais em quatro lagoas marginais do rio Jequitaí: Lagoão (LAG ...
Fábio Pereira Arantes, José Enemir Santos, Marcus Túlio Rocha Vieira Bernardes, Nilo Bazzoli, Lucas Marcon   +4 more
openaire   +1 more source

Black Scoter habitat use along the southeastern coast of the United States

Ecology and Evolution, 2021
While the Atlantic Coast of the United States and Canada is a major wintering area for sea ducks, knowledge about their wintering habitat use is relatively limited.
Hannah M. Plumpton, Emily D. Silverman, Beth E. Ross   +2 more
doaj   +1 more source

Resighting data reveal weak connectivity from wintering to breeding grounds in a range-restricted and endangered long-distance migratory passerine

Avian Conservation and Ecology, 2018
Understanding migratory connectivity is fundamental to the ecology, evolution, and conservation of migratory species. The endangered Kirtland's Warbler (Setophaga kirtlandii) has a restricted breeding range in early successional jack pine (Pinus ...
Nathan W. Cooper, David N. Ewert, Kimberly R. Hall, Sarah M. Rockwell, Dave Currie, Joseph M. Wunderle, Jr., Jennifer D. White, Peter P. Marra   +7 more
doaj   +1 more source

Migration efficiency sustains connectivity across agroecological networks supporting sandhill crane migration

Ecosphere, 2021
Preserving avian flyway connectivity has long been challenged by our capacity to meaningfully quantify continental habitat dynamics and bird movements at temporal and spatial scales underlying long‐distance migrations.
J. Patrick Donnelly, Sammy L. King, Jeff Knetter, James H. Gammonley, Victoria J. Dreitz, Blake A. Grisham, M. Cathy Nowak, Daniel P. Collins   +7 more
doaj   +1 more source

Distribution and abundance of fish and crayfish in a Waikato stream in relation to basin area [PDF]

, 2003
The aim of this study was to relate the longitudinal distribution of fish and crayfish to increasing basin area and physical site characteristics in the Mangaotama Stream, Waikato region, North Island, New Zealand.
Allen K. R., Armour C. L., Boubée J., Cushing C. E., Dudgeon D., Hawkes H. A., Hynes H. B. N., McDowall R. M., Parkyn S. M., Pearson C. P., Richards K., Richardson J., Riordan P., Swales S., White G. C.   +14 more
core   +2 more sources

Conservation of migratory fishes in the Amazon basin [PDF]

Aquatic Conservation: Marine and Freshwater Ecosystems, 2021
Abstract The Amazon basin hosts the Earth's highest diversity of freshwater fish. Fish species have adapted to the basin's size and seasonal dynamics by displaying a broad range of migratory behaviour, but they are under increasing threats; however, no study to date has assessed threats and conservation of Amazonian migratory fishes.
Fabrice Duponchelle, Victoria J. Isaac, Carolina Rodrigues Da Costa Doria, Paul A. Van Damme, Guido A. Herrera‐R, Elizabeth P. Anderson, Rivetla E.A. Cruz, Marilia Hauser, Theodore W. Hermann, Edwin Agudelo, César Bonilla‐Castillo, Ronaldo Barthem, Carlos E.C. Freitas, Carmen García‐Dávila, Aurea García‐Vasquez, Jean‐François Renno, Leandro Castello   +16 more
openaire   +4 more sources

Implications of Historical and Contemporary Processes on Genetic Differentiation of a Declining Boreal Songbird: The Rusty Blackbird

Diversity, 2021
The arrangement of habitat features via historical or contemporary events can strongly influence genomic and demographic connectivity, and in turn affect levels of genetic diversity and resilience of populations to environmental perturbation.
Robert E. Wilson, Steven M. Matsuoka, Luke L. Powell, James A. Johnson, Dean W. Demarest, Diana Stralberg, Sarah A. Sonsthagen   +6 more
doaj   +1 more source

Revising the marine range of the endangered black-capped petrel Pterodroma hasitata: occurrence in the northern Gulf of Mexico and exposure to conservation threats

Endangered Species Research, 2021
The black-capped petrel Pterodroma hasitata is an Endangered seabird endemic to the western North Atlantic. Although estimated at ~1000 breeding pairs, only ~100 nests have been located at 2 sites in Haiti and 3 sites in the Dominican Republic.
PGR Jodice, PE Michael, JS Gleason, JC Haney, YG Satgé   +4 more
doaj   +1 more source