Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Darroch M. Whitaker"'
Publikováno v:
Avian Conservation and Ecology, Vol 18, Iss 2, p 5 (2023)
Introduced species are known for inducing changes in ecosystems and for their impacts on endemic island species. North American red squirrels ( Tamiasciurus hudsonicus ) were introduced to Newfoundland, Canada, during the 1960s and have been hypothes
Externí odkaz:
https://doaj.org/article/939bcc4b4e2249968e504d6872208d34
Publikováno v:
Journal of Field Ornithology, Vol 94, Iss 1, p 4 (2023)
Breeding bird survey (BBS) data are typically analyzed at the route level in which the average or combined total number of individuals across the 50 stops is treated as a single observation. However, analysis at the stop level may provide information
Externí odkaz:
https://doaj.org/article/8f5f5f4b6ce64b45bf0ba38edf0c74a0
Autor:
Marcel A. Gahbauer, Scott R. Parker, Joanna X. Wu, Cavan Harpur, Brooke L. Bateman, Darroch M. Whitaker, Douglas P. Tate, Lotem Taylor, Denis Lepage
Publikováno v:
PLoS ONE, Vol 17, Iss 1 (2022)
National parks often serve as a cornerstone for a country’s species and ecosystem conservation efforts. However, despite the protection these sites afford, climate change is expected to drive a substantial change in their bird assemblages. We used
Externí odkaz:
https://doaj.org/article/698604d63c7d4fe28a551903d3133848
Autor:
Kathleen K. E. Manson, Jenna P. B. McDermott, Luke L. Powell, Darroch M. Whitaker, Ian G. Warkentin
Publikováno v:
Diversity, Vol 12, Iss 9, p 340 (2020)
Rusty blackbirds (Euphagus carolinus), once common across their boreal breeding distribution, have undergone steep, range-wide population declines. Newfoundland is home to what has been described as one of just two known subspecies (E. c. nigrans) an
Externí odkaz:
https://doaj.org/article/441ebb84846d4d9baec06058fcf1ff34
Autor:
Alana R. Westwood, Nicole K. Barker, Sam Grant, Amy L. Amos, Alaine F. Camfield, Kaytlin L. Cooper, Francisco V. Dénes, Frankie Jean-Gagnon, Lindsay McBlane, Fiona K. A. Schmiegelow, Jamie I. Simpson, Stuart M. Slattery, Darren J. H. Sleep, Sophie Sliwa, Jeffrey V. Wells, Darroch M. Whitaker
Publikováno v:
Avian Conservation and Ecology, Vol 15, Iss 1, p 26 (2020)
Recent research on boreal birds has focused on understanding effects of human activity on populations and their habitats. As bird populations continue to decline, research is often intended to inform conservation and management policies and practices
Externí odkaz:
https://doaj.org/article/a10fc63c472a491d905db7276a3f8b48
Autor:
Alyssa M. FitzGerald, Darroch M. Whitaker, Joel Ralston, Jeremy J. Kirchman, Ian G. Warkentin
Publikováno v:
Avian Conservation and Ecology, Vol 12, Iss 1, p 10 (2017)
Gray-cheeked Thrushes breeding on Newfoundland are purported to be a distinct subspecies (Catharus minimus minimus) and have declined precipitously since the 1980s. To assess the validity of Gray-cheeked Thrush subspecies we collected blood samples a
Externí odkaz:
https://doaj.org/article/98ddabc462a44acb87a18817cc471377
Publikováno v:
Avian Conservation and Ecology, Vol 10, Iss 2, p 4 (2015)
Once abundant, the Newfoundland Gray-cheeked Thrush (Catharus minimus minimus) has declined by as much as 95% since 1975. Underlying cause(s) of this population collapse are not known, although hypotheses include loss of winter habitat and the introd
Externí odkaz:
https://doaj.org/article/84307b5024e947f8a840c55dadf1e0b0
Survival of Adult Songbirds in Boreal Forest Landscapes Fragmented by Clearcuts and Natural Openings
Publikováno v:
Avian Conservation and Ecology, Vol 3, Iss 1, p 5 (2008)
There exists little information on demographic responses of boreal songbirds to logging. We conducted a 4-yr (2003-2006) songbird mark-recapture study in western Newfoundland, where land cover is a naturally heterogeneous mosaic of productive spruce-
Externí odkaz:
https://doaj.org/article/9c83aedb48bb42809b9900b036ee352f
Publikováno v:
Canadian Journal of Forest Research. 50:1064-1073
Factors that limit the range expansion of introduced species can offer insights into the basic ecology of these species and inform conservation of associated endemic species. North American red squirrels (Tamiasciurus hudsonicus (Erxleben, 1777)) wer
Autor:
Jenna P. B. McDermott, Kathleen K. E. Manson, Darroch M. Whitaker, Ian G. Warkentin, Luke L. Powell
Publikováno v:
Diversity
Volume 12
Issue 9
Diversity, 2020, Vol.12(9), pp.340 [Peer Reviewed Journal]
Diversity, Vol 12, Iss 340, p 340 (2020)
Volume 12
Issue 9
Diversity, 2020, Vol.12(9), pp.340 [Peer Reviewed Journal]
Diversity, Vol 12, Iss 340, p 340 (2020)
Rusty blackbirds (Euphagus carolinus), once common across their boreal breeding distribution, have undergone steep, range-wide population declines. Newfoundland is home to what has been described as one of just two known subspecies (E. c. nigrans) an