Results 221 to 230 of about 170,616 (303)

Temporal changes in the dietary niche of sympatric seals provides insight into the role of competition in population declines

Oikos, EarlyView.
Competition theory suggests that interspecific prey competition can result in changes to the dietary niche, but obtaining timeseries of data from sympatric species experiencing temporal variation in competition is challenging. Scotland is an important area for two species of seals, but over the past 20 years, populations of harbour seals Phoca vitulina
Izzy Langley, Philip S. Hammond, Paul M. Thompson, Graham J. Pierce, Lindsay J. Wilson, Ailsa J. Hall, Gordon D. Hastie, Debbie J. F. Russell   +7 more
wiley   +1 more source

Combining space use with diet data to investigate foraging tactics of black bears in response to the pulsed availability of migratory caribou calves. [PDF]

PLoS One
Nowack L, Bonin M, Leclerc M, Michelot C, Dussault C, Taillon J, Pisapio J, Côté SD.   +7 more
europepmc   +1 more source

Age ratio in groups of a social ungulate affects epizoochorous dispersal and diaspore exchanges

Oikos, EarlyView.
Animal‐mediated seed dispersal is a key process in plant population dynamics, species distribution and ecosystem functioning. As long‐distance dispersal agents, ungulates help to maintain native plant populations facing abiotic changes in their habitat and habitat fragmentation or habitat loss.
Antoine Roux, Cloé Balson, Morgane Audiguier, Marie Battista, Didier Marcon, Olivier Pays, Christophe Baltzinger   +6 more
wiley   +1 more source

Habitat use of Bechstein´s bats (Myotis bechsteinii) within wind parks in forests. [PDF]

PLoS One
Hurst J, Korner-Nievergelt F, Brinkmann R.   +2 more
europepmc   +1 more source

Understanding the effects of patch‐burn grazing management on aboveground grassland invertebrate biodiversity

Oikos, EarlyView.
Landscape heterogeneity is widely recognized as a driver of biodiversity, yet its consequences for above‐ground, foliage‐dwelling insect communities under active grassland management remain underexplored. Patch‐burn grazing (PBG), which rotates fire across patches within a grazed landscape, is designed to promote spatial and temporal heterogeneity by ...
Zachary L. T. Bunch, Meghan L. Avolio, Sally E. Koerner, Kevin R. Wilcox, Lydia H. Zeglin, Kimberly J. Komatsu   +5 more
wiley   +1 more source

Novel Foraging Behaviors of an Urban Bird, the Light-Vented Bulbul (<i>Pycnonotus sinensis</i>). [PDF]

Ecol Evol
Li Y, Lin S, Liang W.
europepmc   +1 more source

Foraging and movement flexibility shape seed dispersal by an arboreal primate in a modified landscape

Oikos, EarlyView.
As habitats change, the effectiveness of animal‐mediated seed dispersal increasingly depends on animal responses to altered structure and resources. With habitat loss and degradation accelerating across the tropics, understanding how dispersers' foraging behavior and movement influence seed removal and deposition is critical to promoting forest ...
Anaid Cárdenas‐Navarrete, Sarie Van Belle, Onja H. Razafindratsima   +2 more
wiley   +1 more source

From the brink of extinction to regulation: northern Europe's white‐tailed eagles now face density dependence and climate constraints after rapid population growth

Oikos, EarlyView.
Population growth reflects the combined influence of regulation and density‐independent factors operating through demographic processes. Under exceptional circumstances (e.g. populations recovering from near‐extinction), growth may initially be weakly regulated but typically slows as negative density dependence (NDD) sets in.
Bård‐Jørgen Bårdsen, Elisabeth Hansen, Jan Ove Bustnes   +2 more
wiley   +1 more source

Regional variations in the diet of the South Polar Skua (Stercorarius maccormicki) in the Ross Sea region, Antarctica. [PDF]

PLoS One
Kim J, Kim Y, Kim JU, Oh Y, Kim JH.
europepmc   +1 more source

The niche variation hypothesis predicts hunting returns across human cultures

Oikos, EarlyView.
The niche variation hypothesis (NVH) proposes that a broader population niche arises from greater individual specialization. Despite decades of empirical testing, research remains constrained to non‐human foragers, and the generality of NVH may extend beyond wildlife. The analysis of > 8000 hunting records from 12 human societies across four continents
Raul Costa‐Pereira
wiley   +1 more source