Results 41 to 50 of about 240,148 (195)

Phenological drivers of ungulate migration in South America: characterizing the movement and seasonal habitat use of guanacos

open access: yesMovement Ecology, 2022
Background Migration is a widespread strategy among ungulates to cope with seasonality. Phenology, especially in seasonally snow-covered landscapes featuring “white waves” of snow accumulation and “green waves” of plant green-up, is a phenomenon that ...
Malena Candino   +2 more
doaj   +1 more source

Guanaco (Lama guanicoe) mortality by entanglement in wire fences

open access: yesJournal for Nature Conservation, 2012
Abstract Wire fences are widely used in rangelands around the world and may have a negative impact on wildlife that varies among species and habitats. The guanaco ( Lama guanicoe ) is the largest Patagonian ungulate and though entanglement in wire fences is frequently reported, its impact on guanaco populations has not been previously evaluated.
Rey, Andrés   +2 more
openaire   +2 more sources

Contemporary Management of Human‐Caused Hybridization in Mammals: A Review

open access: yesMammal Review, Volume 56, Issue 4, December 2026.
By reviewing studies on human‐mediated (i.e., anthropogenic) hybridization, we identify key management gaps, including inconsistent identification of admixed individuals, limited population‐level assessments, insufficient social engagement, and unclear management objectives.
Giulia Gaiotto, Paolo Ciucci
wiley   +1 more source

Surplus Killing of Magellanic Penguins Spheniscus magellanicus by Puma Puma concolor) in Islote Lobos National Park, Northern Patagonia

open access: yesEcology and Evolution, Volume 16, Issue 11, November 2026.
We document repeated surplus killing events by pumas (Puma concolor) affecting breeding colonies of Magellanic penguins (Spheniscus magellanicus) in Islote Lobos National Park, northern Patagonia, Argentina. During the 2025–2026 breeding season, at least 961 penguins were killed, representing the largest natural mortality event recorded in the colony ...
Jesica D. Hombre   +4 more
wiley   +1 more source

Sociability Under Anthropogenic Change: From Individual Behaviour to Population‐Level Consequences

open access: yesEcology and Evolution, Volume 16, Issue 10, October 2026.
Our review synthesises empirical and theoretical research on how anthropogenic environmental change reshapes animal social behaviour from individuals to populations. We use sociability as an individual‐level lens, distinguishing context‐dependent expression from repeatable interindividual differences and linking both to social relationships, network ...
Paulina Kowalczyk, Barbara Pietrzak
wiley   +1 more source

Frugivory and seed dispersal in the endemic cactus Eulychnia acida: extending the anachronism hypothesis to the Chilean Mediterranean ecosystem

open access: yesRevista Chilena de Historia Natural, 2018
Background Eulychnia acida is an endemic Chilean cactus species whose fruits show several traits that, taken as a whole, are compatible with a seed dispersal syndrome by large herbivore vertebrates. Since only a few large native mammals exist in Chile at
Rocío A. Cares   +4 more
doaj   +1 more source

Explotación de aves voladoras en la estepa de Patagonia continental austral: cauquenes (Chloephaga sp.) en el sitio Laguna Las Vegas (cuenca media del río Coyle, Argentina)

open access: yesRelaciones de la Sociedad Argentina de Antropología, 2022
Se analizan los restos óseos de cauquén (Chloephaga sp.) recuperados en el sitio arqueológico a cielo abierto Laguna Las Vegas, cuenca media del río Coyle (Santa Cruz).
Juan Bautista Belardi, Luciana Stoessel
doaj   +1 more source

El dimorfismo sexual en guanacos (Lama guanicoe). Una evaluación osteométrica de elementos poscraneales

open access: yesRevista del Museo de Antropologia, 2009
En poblaciones vivas, los camélidos silvestres sudamericanos son sexados a partir de la observación de su conducta social y reproductiva. Por lo general, tanto biólogos como arqueólogos asumen la ausencia de caracteres morfológicos que evidencien un ...
Cristian Ariel Kaufmann   +1 more
doaj   +5 more sources

Lama glama subsp. guanicoe Müller 1776

open access: yes, 2005
Published as part of Wilson, Don E. & Reeder, DeeAnn, 2005, Order Artiodactyla, pp. 637-722 in Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 1, Baltimore :The Johns Hopkins University Press on page 647, DOI: 10.5281/zenodo ...
Wilson, Don E., Reeder, DeeAnn
openaire   +2 more sources

Estimating red deer Cervus elaphus population density using drones in a steep and rugged terrain

open access: yesWildlife Biology, Volume 2026, Issue 5, September 2026.
Precise and accurate information about population density, crucial for wildlife management, is difficult to obtain for elusive species living in dense forests or steep and inaccessible terrain. Using unmanned aerial vehicles (UAVs), we developed a method for obtaining absolute population estimates of ungulates living in steep, rugged, and partly ...
Julie Bommerlund   +3 more
wiley   +1 more source

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