Results 41 to 50 of about 61,906 (291)

Foxes engineer hotspots of wildlife activity on the nutrient-limited Arctic tundra

open access: yesGlobal Ecology and Conservation, 2022
Predators largely affect ecosystems through trophic interactions, but they also can have indirect effects by altering nutrient dynamics and acting as ecosystem engineers. Arctic foxes (Vulpes lagopus) are ecosystem engineers that concentrate nutrients on
Shu-Ting Zhao   +2 more
doaj   +1 more source

Predator–prey relationships: arctic foxes and lemmings [PDF]

open access: yesJournal of Animal Ecology, 1999
1. The number of breeding dens and litter sizes of arctic foxesAlopex lagopuswere recorded and the diet of the foxes was analysed during a ship‐based expedition to 17 sites along the Siberian north coast. At the same time the cyclic dynamics of co‐existing lemming species were examined.2.The diet of arctic foxes was dominated by the Siberian ...
Anders Angerbjorn   +2 more
openaire   +1 more source

07 Intern Assignment Biological Adaptations [PDF]

open access: yes, 2020
WELCOME to WINDOWS on the INQUIRY CLASSROOM! You have landed on a piece of a National Science Foundation Project (DUE 1245730) directed by Professor Chris Bauer, Chemistry Department, University of New Hampshire.
Bauer, Christopher F.
core   +1 more source

Long-term responses of Icelandic Arctic foxes to changes in marine and terrestrial ecosystems.

open access: yesPLoS ONE, 2023
The long-term dynamics of predator populations may be driven by fluctuations in resource availability and reflect ecosystem changes such as those induced by climate change. The Icelandic Arctic fox (Vulpes lagopus) population has known major fluctuations
Fanny Berthelot   +3 more
doaj   +1 more source

Microsatellite loci among Alaskan rabies hosts: Arctic and red fox [PDF]

open access: yes, 2012
Little is known about the population dynamics between Arctic and red foxes in Alaska and consequences for rabies ecology. Both species carry different variants of rabies and inhabit different environments.
Renshaw, Ben
core  

Search for Barents: Evaluation of possible burial sites on north Novaya Zemlya, Russia [PDF]

open access: yes, 2002
Three cairns on northernmost Novaya Zemlya identified as possible rock-pile graves by Russian investigators in 1977 and 1988 were located and inspected for human remains. These cairns are in the area visited by Dutch seafarers between 17 and 22 June 1597,
Floore, P.M.   +3 more
core   +2 more sources

Tau acetylation at K331 has limited impact on tau pathology in vivo

open access: yesFEBS Letters, EarlyView.
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto   +3 more
wiley   +1 more source

Transcriptional network analysis of PTEN‐protein‐deficient prostate tumors reveals robust stromal reprogramming and signs of senescent paracrine communication

open access: yesMolecular Oncology, EarlyView.
Combining PTEN protein assessment and transcriptomic profiling of prostate tumors, we uncovered a network enriched in senescence and extracellular matrix (ECM) programs associated with PTEN loss and conserved in a mouse model. We show that PTEN‐deficient cells trigger paracrine remodeling of the surrounding stroma and this information could help ...
Ivana Rondon‐Lorefice   +16 more
wiley   +1 more source

A screening for canine distemper virus, canine adenovirus and carnivore protoparvoviruses in Arctic foxes (Vulpes lagopus) and red foxes (Vulpes vulpes) from Arctic and sub-Arctic regions of Norway

open access: yesPolar Research, 2018
Canine distemper virus (CDV), canine adenovirus (CAdV) and canine parvovirus type 2 (CPV-2) cause disease in dogs (Canis familiaris). These, or closely related viruses, may also infect wild carnivores. The aim of this study was to investigate exposure to
Morten Tryland   +7 more
doaj   +1 more source

Breeding value evaluation in Polish fur animals: Estimates of direct heritability and portion of litter variation of fur coat and reproduction traits

open access: yesCzech Journal of Animal Science, 2004
The study presents estimates of heritability for fur coat and reproduction traits in arctic and silver foxes kept on Polish farms. The estimates of variance components were calculated using the DFREML and single-trait animal models.
H. Wierzbicki
doaj   +1 more source

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