Survival of Adult Songbirds in Boreal Forest Landscapes Fragmented by Clearcuts and Natural Openings

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-fir forest, stunted taiga, and openings such as bo...

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Published in:Avian Conservation and Ecology
Main Authors: Darroch M. Whitaker, Philip D. Taylor, Ian G. Warkentin
Format: Article in Journal/Newspaper
Language:English
Published: Resilience Alliance 2008
Subjects:
Online Access:https://doi.org/10.5751/ACE-00223-030105
https://doaj.org/article/9c83aedb48bb42809b9900b036ee352f
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spelling fttriple:oai:gotriple.eu:oai:doaj.org/article:9c83aedb48bb42809b9900b036ee352f 2023-05-15T17:22:51+02:00 Survival of Adult Songbirds in Boreal Forest Landscapes Fragmented by Clearcuts and Natural Openings Darroch M. Whitaker Philip D. Taylor Ian G. Warkentin 2008-06-01 https://doi.org/10.5751/ACE-00223-030105 https://doaj.org/article/9c83aedb48bb42809b9900b036ee352f en eng Resilience Alliance 1712-6568 doi:10.5751/ACE-00223-030105 https://doaj.org/article/9c83aedb48bb42809b9900b036ee352f undefined Avian Conservation and Ecology, Vol 3, Iss 1, p 5 (2008) boreal forest clearcutting demographics forest management mark-recapture resilience songbirds apparent survival transience envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2008 fttriple https://doi.org/10.5751/ACE-00223-030105 2023-01-22T19:12:00Z 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-fir forest, stunted taiga, and openings such as bogs, fens, and riparian zones. We compared apparent survival and rate of transience for adults of 14 species between areas having forests fragmented primarily by either natural openings or 3-7 yr-old clearcuts. Data were collected on three landscape pairs, with birds being marked on three 4-6 ha netting sites on each landscape (total = 18 netting sites). Survival rates were estimated using multi-strata mark-recapture models with landscape types specified as model strata. Landscape type was retained in the best model for only two species, Ruby-crowned Kinglet and Yellow-rumped Warbler, in both cases indicating lower apparent survival in landscapes having clearcuts. Though parameter estimates suggested lower survival in clearcut landscapes for several species, meta-analysis across all species detected no general difference between landscape types. Further, we did not detect any relation between landscape differences in survival and a species' habitat affinity, migratory strategy, or the proportion of transients in its population. Although sensitivity to logging was limited, we observed high interspecific variation in rates of breeding season apparent survival (48% [Dark-eyed Junco] to 100% [several species]), overwinter apparent survival (0.3% [Ruby-crowned Kinglet] to 86.5% [Gray Jay]), and transience (â0% [several species] to 61% [Ruby-crowned Kinglet in clearcut landscapes]). For Lincoln's and White-throated Sparrows, over-winter apparent survival was >2× higher for males than females, and rate of transience was > 8× higher for White-throated Sparrow males than females. Moderately male-biased sex ratios suggested that both lower mortality and higher site fidelity contributed to higher apparent survival of males. ... Article in Journal/Newspaper Newfoundland taiga Unknown Avian Conservation and Ecology 3 1
institution Open Polar
collection Unknown
op_collection_id fttriple
language English
topic boreal forest
clearcutting
demographics
forest management
mark-recapture
resilience
songbirds
apparent survival
transience
envir
spellingShingle boreal forest
clearcutting
demographics
forest management
mark-recapture
resilience
songbirds
apparent survival
transience
envir
Darroch M. Whitaker
Philip D. Taylor
Ian G. Warkentin
Survival of Adult Songbirds in Boreal Forest Landscapes Fragmented by Clearcuts and Natural Openings
topic_facet boreal forest
clearcutting
demographics
forest management
mark-recapture
resilience
songbirds
apparent survival
transience
envir
description 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-fir forest, stunted taiga, and openings such as bogs, fens, and riparian zones. We compared apparent survival and rate of transience for adults of 14 species between areas having forests fragmented primarily by either natural openings or 3-7 yr-old clearcuts. Data were collected on three landscape pairs, with birds being marked on three 4-6 ha netting sites on each landscape (total = 18 netting sites). Survival rates were estimated using multi-strata mark-recapture models with landscape types specified as model strata. Landscape type was retained in the best model for only two species, Ruby-crowned Kinglet and Yellow-rumped Warbler, in both cases indicating lower apparent survival in landscapes having clearcuts. Though parameter estimates suggested lower survival in clearcut landscapes for several species, meta-analysis across all species detected no general difference between landscape types. Further, we did not detect any relation between landscape differences in survival and a species' habitat affinity, migratory strategy, or the proportion of transients in its population. Although sensitivity to logging was limited, we observed high interspecific variation in rates of breeding season apparent survival (48% [Dark-eyed Junco] to 100% [several species]), overwinter apparent survival (0.3% [Ruby-crowned Kinglet] to 86.5% [Gray Jay]), and transience (â0% [several species] to 61% [Ruby-crowned Kinglet in clearcut landscapes]). For Lincoln's and White-throated Sparrows, over-winter apparent survival was >2× higher for males than females, and rate of transience was > 8× higher for White-throated Sparrow males than females. Moderately male-biased sex ratios suggested that both lower mortality and higher site fidelity contributed to higher apparent survival of males. ...
format Article in Journal/Newspaper
author Darroch M. Whitaker
Philip D. Taylor
Ian G. Warkentin
author_facet Darroch M. Whitaker
Philip D. Taylor
Ian G. Warkentin
author_sort Darroch M. Whitaker
title Survival of Adult Songbirds in Boreal Forest Landscapes Fragmented by Clearcuts and Natural Openings
title_short Survival of Adult Songbirds in Boreal Forest Landscapes Fragmented by Clearcuts and Natural Openings
title_full Survival of Adult Songbirds in Boreal Forest Landscapes Fragmented by Clearcuts and Natural Openings
title_fullStr Survival of Adult Songbirds in Boreal Forest Landscapes Fragmented by Clearcuts and Natural Openings
title_full_unstemmed Survival of Adult Songbirds in Boreal Forest Landscapes Fragmented by Clearcuts and Natural Openings
title_sort survival of adult songbirds in boreal forest landscapes fragmented by clearcuts and natural openings
publisher Resilience Alliance
publishDate 2008
url https://doi.org/10.5751/ACE-00223-030105
https://doaj.org/article/9c83aedb48bb42809b9900b036ee352f
genre Newfoundland
taiga
genre_facet Newfoundland
taiga
op_source Avian Conservation and Ecology, Vol 3, Iss 1, p 5 (2008)
op_relation 1712-6568
doi:10.5751/ACE-00223-030105
https://doaj.org/article/9c83aedb48bb42809b9900b036ee352f
op_rights undefined
op_doi https://doi.org/10.5751/ACE-00223-030105
container_title Avian Conservation and Ecology
container_volume 3
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