Zobrazeno 1 - 10
of 79
pro vyhledávání: '"Douglas C Heard"'
Publikováno v:
Global Ecology and Conservation, Vol 45, Iss , Pp e02507- (2023)
Stable isotopes of animal tissue have been used to estimate diet for many consumer species and places, but the ability to assign contributions to all food items is limited by the number of tracers used, and the separation of the tracer data among the
Externí odkaz:
https://doaj.org/article/7c6d1560492d4bcaaabdafe0eb36d12c
Autor:
Douglas C. Heard, Kathryn L. Zimmerman
Publikováno v:
PeerJ, Vol 9, p e10708 (2021)
Most woodland caribou (Rangifer tarandus caribou) populations are declining primarily because of unsustainable predation resulting from habitat-mediated apparent competition. Wolf (Canis lupus) reduction is an effective recovery option because it add
Externí odkaz:
https://doaj.org/article/ea9d62d12ef844de9026c215211af83d
Autor:
Kathryn L Zimmerman, Douglas C Heard
Publikováno v:
PeerJ
PeerJ, Vol 9, p e10708 (2021)
PeerJ, Vol 9, p e10708 (2021)
Most woodland caribou (Rangifer tarandus caribou) populations are declining primarily because of unsustainable predation resulting from habitat-mediated apparent competition. Wolf (Canis lupus) reduction is an effective recovery option because it add
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a002f3e610476e889d3803c369bdf171
http://europepmc.org/articles/PMC7953878
http://europepmc.org/articles/PMC7953878
Publikováno v:
PLoS ONE, Vol 8, Iss 12, p e82757 (2013)
Conservation of grizzly bears (Ursus arctos) is often controversial and the disagreement often is focused on the estimates of density used to calculate allowable kill. Many recent estimates of grizzly bear density are now available but field-based es
Externí odkaz:
https://doaj.org/article/b515bd643c694cb0aa0bb147f1f79383
Publikováno v:
Rangifer, Vol 27, Iss 4 (2007)
Body reserves (fat and protein) of cervids are important to the reproductive success of individuals, and therefore may limit productivity of populations. We used a portable ultrasound machine to measure thickness of rump fat for 39 woodland caribou (
Externí odkaz:
https://doaj.org/article/25888c453c9841938ebe892c4e41785c
Publikováno v:
Rangifer, Vol 27, Iss 4 (2007)
Woodland caribou (Rangifer tarandus caribou) in British Columbia have been classified into ecotypes based on differences in use of habitat in winter. Although recovery planning focuses on ecotypes, habitat use and selection varies within ecotypes. Ou
Externí odkaz:
https://doaj.org/article/e681b5ec6cc64ec580dcf99860eb6d6c
Publikováno v:
Rangifer, Vol 20, Iss 5 (2000)
We examined the foraging habits of the northern woodland caribou ecotype {Rangifer tarandus caribou) at the scale of the individual feeding site. Field data were collected in north-central British Columbia over two winters (Dec 1996-Apr 1998). We tra
Externí odkaz:
https://doaj.org/article/f9cebabc5e38440bb1db5b2cd9018081
Autor:
Douglas C. Heard, Kathryn L. Vagt
Publikováno v:
Rangifer, Vol 18, Iss 5 (1998)
Caribou (Rangifer tarandus) in British Columbia are classified into mountain, northern and boreal ecotypes based on behavioural and ecological characteristics. We recognized 12 mountain caribou herds, 27 northern caribou herds, and an area occupied b
Externí odkaz:
https://doaj.org/article/9ca07a2a44174699bece7a8d7aa61d68
Autor:
Douglas C. Heard, Robert Serrouya, Bruce N. McLellan, Sophie L. Gilbert, Dale R. Seip, Stan Boutin, R. Scott McNay
Publikováno v:
The Journal of Wildlife Management. 81:297-305
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::255041059645d7413df37d96969b29e6
https://doi.org/10.1002/jwmg.21185
https://doi.org/10.1002/jwmg.21185
Publikováno v:
Rangifer, Vol 16, Iss 4 (1996)
This paper is a review of the ecology of two caribou populations inhabiting predator-free northern islands, Coats and Southampton Island. Findings are analyzed in light of the hypothesis that in absence of prédation or high human harvest, food compe
Externí odkaz:
https://doaj.org/article/494d67cd79bd4ffb91ebfa860f97b192