Results 71 to 80 of about 1,072 (165)

Hunting for ecological indicators: are large herbivore skeleton measures from harvest data useful proxies for monitoring? [PDF]

, 2023
Hunter-collected data and samples are used as indices of population performance, and monitoring programs often take advantage of such data as ecological indicators.
Bårdsen, Bård-Jørgen, Hansen, Brage Bremset, Irvine, Justin R, Pedersen, Åshild Ønvik, Veiberg, Vebjørn   +4 more
core   +1 more source

ANÁLISIS FECALES EN EL ESTUDIO DE LA REPRODUCCIÓN EN CÉRVIDOS Y SU PAPEL EN LA CONSERVACIÓN [PDF]

, 2013
El uso de las técnicas no invasivas por medio de heces fecales, son una alternativa para el estudio de la reproducción en cérvidos, con la más mínima manipulación de los individuos de estudio.
Arroyo RE, Lavín MP, Vital GC
core  

Vision at high latitudes: High sensitivity without specific boreal adaptations in photoreception in reindeer (Rangifer tarandus L.)

Functional Ecology, Volume 39, Issue 10, Page 2573-2587, October 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The light climate at high latitudes, in particular the extended twilight of winter and the reduced diel variation in light level in midsummer and midwinter, potentially constrains visual function and the synchronisation of temporal organisation in polar species. In this
Nicholas J. C. Tyler, Robert A. E. Fosbury, David Hazlerigg, Christopher Hogg   +3 more
wiley   +1 more source

Contrasting regulation of fecundity in two abomasal nematodes of Svalbard reindeer (Rangifer tarandus platyrhynchus)

Parasitology, 2001
Stability of trichostrogylid populations indicates that some form of density-dependent regulation occurs which could act through fecundity. We present evidence for intraspecific density-dependent effects in 1 of 2, dominant, abomasal nematodes species (Ostertagia gruehneri) of Svalbard reindeer (Rangifer tarandus platyrhynchus). We found evidence in O.
R J, Irvine, A, Stien, J F, Dallas, , Halvorsen, R, Langvatn, S D, Albon   +5 more
openaire   +2 more sources

Droppings of Svalbard reindeer (Rangifer tarandus platyrhynchus) as a reservoir of cultivable micromycetes on Spitsbergen

Polish Polar Research, 2022
Fungi are highly diverse, yet only a minor part of the total estimated species has been cultured and characterized. This might be especially true for Arctic, where studies on the fungal diversity are still scarce. For that reason, our aim was to analyze fungal diversity in the droppings of Rangifer tarandus platyrhynchus.
Rafał Ogórek, Jakub Suchodolski, Bartłomiej Dudek   +2 more
openaire   +1 more source

The relationship between the fat content of Svalbard reindeer in autumn and their death from starvation in winter

Rangifer, 1986
The relationship between body fat reserves in autumn and age-specific mortality in winter were examined in Svalbard reindeer (Rangifer tarandus platyrhynchus Vrolik).
N. J.C. Tyler
doaj   +1 more source

Marine‐derived nutrients shape the functional composition of High Arctic plant communities

Functional Ecology, Volume 39, Issue 6, Page 1606-1621, June 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Low temperatures and nutrient limitation have shaped Arctic plant communities, which are now affected by biome‐wise changes in both climate and nutrient cycling. Rising temperatures are favouring taller plant species with more resource‐acquisitive traits across the ...
Ruben E. Roos, Julia Kemppinen, Pekka Niittynen, Vigdis Vandvik, Inge Althuizen, Pernille Bronken Eidesen, Brian J. Enquist, Geir Wing Gabrielsen, Jonathan J. Henn, Ingibjörg S. Jónsdóttir, Kari Klanderud, Simone I. Lang, Kai Lepley, Marc Macias‐Fauria, Brian S. Maitner, Yadvinder Malhi, Sean T. Michaletz, Richard J. Telford, Polly Bass, Matiss Castorena, Siri Vatsø Haugum, Yaoqi Li, Mary C. Linabury, Barbara M. Neto‐Bradley, Molly Ng, Karolína Pánková, Marcus P. Spiegel, Eleanor R. Thomson, Lucely L. Vilca‐Bustamante, Aud H. Halbritter   +29 more
wiley   +1 more source

Endangered Deep‐Snow Mountain Caribou Have a Distinct Winter Diet and Gut Microbiome That May Be Altered by Maternal Penning

Molecular Ecology, Volume 34, Issue 11, June 2025.
ABSTRACT Understanding species‐ or population‐specific dietary specialisation is key to informing habitat conservation needs and successful ex situ recovery programs for many endangered species. One of the most endangered populations in Canada, the behaviourally distinct deep‐snow ecotype of the Southern Mountain caribou, is characterised by a winter ...
Scott Sugden, Robert Serrouya, Lalenia Neufeld, Helen Schwantje, Colleen Cassady St. Clair, Lisa Stein, Toby Spribille   +6 more
wiley   +1 more source

Rain more important than windchill for insulation loss in Svalbard reindeer fur

Rangifer, 2004
Heat transfer through dry and wet Svalbard reindeer (Rangifer tarandus platyrhynchus) summer and winter midback fur samples was studied in a wind tunnel.
Christine Cuyler, Nils A. Øritsland
doaj   +1 more source

Seasonal density‐dependence can select for partial migrants in migratory species

Ecological Monographs, Volume 95, Issue 1, February 2025.
Abstract Whether, and which, individuals migrate or not is rapidly changing in many populations. Exactly how and why environmental change alters migration propensity is not well understood. We constructed density‐dependent structured population models to explore conditions for the coexistence of migrants and residents.
Jin Liu, Zhengwang Zhang, Tim Coulson
wiley   +1 more source