Results 21 to 30 of about 971 (173)
Predators attract prey through ecosystem engineering in the Arctic
Ecosphere, 2018 Predators can affect prey through mechanisms other than predation; for example, redistributing resources could modify habitats favorably for other organisms.
Tazarve Gharajehdaghipour, James D. Roth
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Influence of climate warming on arctic mammals? New insights from ancient DNA studies of the collared lemming Dicrostonyx torquatus. [PDF]
PLoS ONE, 2010 BackgroundGlobal temperature increased by approximately half a degree (Celsius) within the last 150 years. Even this moderate warming had major impacts on Earth's ecological and biological systems, especially in the Arctic where the magnitude of abiotic ...
Stefan Prost +7 more
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The oestrous cycle in the Norwegian lemming Lemmus lemmus (L.)
Fauna Norvegica, 1990 In vaginal smears of Norwegian lemmings swelling of leucocytes was prevented by quickly drying the effluent using a hairdryer. The mean length of the oestrous cycle in captive lemmings was 5.6 days. About half of the animals rarely cycled and some spent
Svein Ellefsen, Arne Semb-Johansson
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Assessing the Ecological Network of Svalbard Through Scaled Interaction Strength Data: Insights From a Century of Research. [PDF]
Ecol EvolIn this work, we integrate existing knowledge on interaction strengths into a conceptual model of the Svalbard Ecological Network. We also highlight current knowledge gaps and challenges in establishing a robust baseline of species interactions in the region.
Zhemchuzhnikov MK +4 more
europepmc +2 more sources
International Journal for Parasitology: Parasites and Wildlife, 2019 Many rodents, including most populations of arctic lemmings (genus Dicrostonyx and Lemmus), have cyclic population dynamics. Among the numerous hypotheses which have been proposed and tested to explain this typical characteristic of some terrestrial ...
Olivier Gilg +16 more
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Testimonials to reconstruct past abundances of wildlife populations
Basic and Applied Ecology, 2023 Long-term monitoring of wildlife populations has greatly contributed to our current understanding of population dynamics and ecosystem functioning. Despite tireless field campaigns, however, only a fraction of the biodiversity has been monitored to date ...
David Bolduc +5 more
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DiversityFor 30 years (1992–2021), we collected pellets and pellet fragments and recorded prey cached in Snowy Owl (Bubo scandiacus) nests during the breeding season in Utqiaġvik, Alaska.
Denver W. Holt +3 more
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UAV reveals substantial but heterogeneous effects of herbivores on Arctic vegetation
Scientific Reports, 2021 Understanding how herbivores shape plant biomass and distribution is a core challenge in ecology. Yet, the lack of suitable remote sensing technology limits our knowledge of temporal and spatial impacts of mammal herbivores in the Earth system.
Matthias B. Siewert, Johan Olofsson
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PLoS ONE, 2021 Arvicolinae is one of the most impressive placental radiations with over 150 extant and numerous extinct species that emerged since the Miocene in the Northern Hemisphere.
Natalia I Abramson +4 more
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Arctic ScienceRodent prey sustains a diverse assemblage of Arctic predators. While lemmings and voles cooccur in large parts of the Arctic, certain predators appear to specialize on lemmings.
Rolf A. Ims +9 more
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