Results 61 to 70 of about 1,376 (172)

Pee-cards: a new, inexpensive, and humane technique to index collared lemming abundance

Arctic Science
Lemmings drive tundra vertebrate food webs, yet ethical and logistical constraints still limit spatially explicit monitoring. We introduce and evaluate a low-cost “pee-card” method that indexes collared lemming Dicrostonyx groenlandicus (Traill, 1823 ...
Dominique Berteaux, Rachel Demers, Émilie Desjardins, Ludovic Landry-Ducharme, François Vézina, Andrew Tam   +5 more
doaj   +1 more source

Rainfall and Rain‐on‐Snow Events Over Greenland in Summer: Climatology, Trends, Synoptics

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 5, 16 March 2026.
Abstract Rain‐on‐snow (ROS) events in the Arctic can lead to major impacts on the snow cover, cryosphere and environment. During the last decades, these events have significantly increased, mostly due to climate change. Here, we use outputs from the regional climate model MAR (version 3.14) driven by the ERA5 reanalysis at 10‐km resolution over ...
Emilie Frame, Benjamin Pohl, Charles Amory, Xavier Fettweis, Victoire Buffet, Eric Bernard, Olivier Champagne, Vincent Favier   +7 more
wiley   +1 more source

Breeding in a den of thieves: pros and cons of nesting close to egg predators

Ecosphere, 2016
Breeding success of many Arctic‐breeding bird populations varies with lemming cycles due to prey switching behavior of generalist predators. Several bird species breed on islands to escape from generalist predators like Arctic fox Vulpes lagopus, but ...
Jimmy deFouw, Roeland A. Bom, Raymond H. G. Klaassen, Gerard J. D. M. Müskens, Peter P. deVries, Igor Yu. Popov, Yakov I. Kokorev, Barwolt S. Ebbinge, Bart A. Nolet   +8 more
doaj   +1 more source

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
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

Can Transfer Learning Overcome the Challenge of Identifying Lemming Species in Images Taken in the near Infrared Spectrum?

Proceedings
Using a camera system developed earlier for monitoring the behavior of lemmings under the snow, we are now able to record a large number of short image sequences from this rodent which plays a central role in the Arctic food web.
Davood Kalhor, Mathilde Poirier, Xavier Maldague, Gilles Gauthier   +3 more
doaj   +1 more source

Growth, reproduction and resource allocation in the Norwegian lemming Lemmus lemmus (L.) under controlled conditions

Fauna Norvegica
Lemmings from a laboratory colony did not show statistically significant differences in growth between the sexes up to an age of 50 days. After this, growth slowed down, but adult individuals continued to gain weight, some reaching more than 100 g ...
Arne Semb-Johansson, Atle Mysterud, Eivind Østbye, Carl Erik Engh   +3 more
doaj   +1 more source

Task Scheduling Optimization in Cloud-Edge Collaborative Architecture via a Multi-Strategy Artificial Lemming Algorithm

Mathematics
In the cloud computing environment, various heterogeneous architectures have emerged, and the cloud-edge collaborative task scheduling architecture has come into being under this background.
Yue Zhang, Jianfeng Wang
doaj   +1 more source

Spring fever: collared lemmings warm up above the snow despite predation risk

Frontiers in Ecology and Evolution
Small mammals inhabiting cold climates face high heat losses and thus, high energy demands for body temperature regulation. However, behavioral adaptations, such as seeking refuge from extreme cold in the subnivean space, can reduce the energetic cost of
Rachel Demers, Rachel Demers, Rachel Demers, Émilie Desjardins, Émilie Desjardins, Émilie Desjardins, Dominique Fauteux, Dominique Fauteux, François Vézina, François Vézina, François Vézina, Andrew Tam, Dominique Berteaux, Dominique Berteaux, Dominique Berteaux, Dominique Berteaux   +15 more
doaj   +1 more source

Wide range lower atmosphere duct parameter inversion from automatic identification system signals using hybrid strategy artificial lemming algorithm

Frontiers in Marine Science
Lower atmospheric ducts significantly alter the propagation of Very High Frequency (VHF) and higher-frequency electromagnetic waves in the marine boundary layer, critically impacting radar and communication systems. Effective duct monitoring is essential
Ting Ting Fu, Ting Ting Fu, Hao Cha, Yu Luo, Hong Wei Fu, Yu Zhang, Bin Tian   +6 more
doaj   +1 more source