Results 61 to 70 of about 971 (173)

Spatio-temporal responses of predators to hyperabundant geese affect risk of predation for sympatric-nesting species.

PLoS ONE, 2019
The Arctic is undergoing rapid changes, with anthropogenic shifts in climate having important and well-documented impacts on habitat. Populations of predators and their prey are affected by changing climate and other anthropogenic factors, and these ...
Scott A Flemming, Erica Nol, Lisa V Kennedy, Audrey Bédard, Marie-Andrée Giroux, Paul A Smith   +5 more
doaj   +1 more source

Effects of water table fluctuations on naphthalene degradation: Soil column experiment and modeling

Vadose Zone Journal, Volume 25, Issue 2, March/April 2026.
Abstract In soils contaminated with petroleum hydrocarbons (PHCs), water table fluctuations (WTFs) affect the kinetics of PHC biodegradation and the generation and transport of carbon dioxide (CO2) and methane (CH4). In this study, a 300‐day‐long column experiment was conducted to simulate the effects of WTFs on the aerobic and anaerobic PHC ...
Mehdi Ramezanzadeh, Fereidoun Rezanezhad, Stephanie Slowinski, Jane Ye, Marianne Vandergriendt, David L. Rudolph, Neil R. Thomson, Philippe Van Cappellen   +7 more
wiley   +1 more source

Predation, reoccupation, cannibalism, and scavenging? Records of small mammals in arctic ground squirrel middens from east Beringia

Arctic, Antarctic, and Alpine Research
Faunal remains from fossil arctic ground squirrel (Urocitellus parryii) middens provide insight into the composition of small mammal communities during the late Pleistocene of Yukon Territory. We evaluated skeletal remains present in 88 of 249 middens in
Scott L. Cocker, Grant D. Zazula, Elizabeth Hall, Christopher N. Jass, John E. Storer, Duane G. Froese   +5 more
doaj   +1 more source

First record of Dicrostonyx (Rodentia, Mammalia) in the Late Pleistocene/?Holocene sediments of Croatia

Geologia Croatica, 2013
The fossil remains of lemmings (Dicrostonyx sp.) have been discovered for the first time in Croatia. The small sample of 11 teeth (M1-3 and M1) originate from the Late Pleistocene/?Holocene sediments from the Romuald's Cave (western Istria).
Jadranka Mauch Lenardić
doaj   +1 more source

Fluctuations in microtine populations in an island area in northern Norway 1958-1981

Fauna Norvegica, 1982
On the small marine island of Tranøy, in Troms county, populations of field vole (Microtus agrestis) peaked in 1959, 1962, 1966, 1970 and 1974, showing a 3 – 4-year cycle largely parallel with microtine cycles in the vicinity.
Svein Myrberget
doaj  

Predation Risk Does Not Delay Breeding but Reduces Nest Survival in High‐Arctic Shorebirds [PDF]

Ecol Evol
We assessed the impact of arctic foxes' predation pressure on two sympatric sandpiper species. Fox activity influenced the breeding ecology of both sandpipers, with earlier nest initiations and lower nest survival rates in areas of high fox activity. ABSTRACT Understanding predator–prey interactions is crucial for correctly answering many fundamental ...
Bonnefond L, Pinaud D, Bollache L, Pagnon T, Buchel E, Sabard B, Gilg V, Moreau J, Gilg O.   +8 more
europepmc   +2 more sources

Limited short-term impact of lemming grazing on vascular plants under experimentally reduced predation in the High Arctic

Arctic Science
Population fluctuations of lemmings in the High Arctic appear to be driven by predator–prey interactions. However, lemming grazing can sometimes have a strong impact on the vegetation during population peaks, suggesting a possible role of plant–herbivore
Gilles Gauthier, Guillaume Slevan-Tremblay, Dominique Fauteux, Esther Lévesque   +3 more
doaj   +1 more source

Comparative phylogeography highlights the double-edged sword of climate change faced by arctic- and alpine-adapted mammals.

PLoS ONE, 2015
Recent studies suggest that alpine and arctic organisms may have distinctly different phylogeographic histories from temperate or tropical taxa, with recent range contraction into interglacial refugia as opposed to post-glacial expansion out of refugia ...
Hayley C Lanier, Aren M Gunderson, Marcelo Weksler, Vadim B Fedorov, Link E Olson   +4 more
doaj   +1 more source

A novel matrix approach to fractional finite difference for solving models based on nonlinear fractional delay differential equations

Ain Shams Engineering Journal, 2014
Many real-life phenomena in physics, engineering, biology, medicine, economics, etc. can be modeled by fractional delay differential equations and having in mind that these modeling interpret phenomena better, they are noticed by researchers, engineers ...
B. Parsa Moghaddam, Z. Salamat Mostaghim
doaj   +1 more source

Ancestros textuales y descendencias contemporáneas: el caso Roberto Arlt – Fabián Casas.

Recial, 2014
The following work proposes a contrastive analysis between the novel El juguete rabioso by Roberto Arlt and its current effects on the narrative corpus of Fabián Casas´s work (Los Lemmings y otros and the nouvelle Ocio), from the general framework of the
Santiago Guidón
doaj