Data from: Timber harvest and tree size near nests explains variation in nest site occupancy but not productivity in northern goshawks (Accipiter gentilis)
Conservation concern for the northern goshawk (Accipiter gentilis) reflects evidence that goshawks may abandon nest sites or suffer from reduced nesting success in response to some forms of timber harvest. However, this evidence is mixed and has yet to be reviewed systemically and quantitatively. Th...
Main Authors: | , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
Dryad
2017
|
Subjects: | |
Online Access: | https://doi.org/10.5061/dryad.70s5t |
id |
fttriple:oai:gotriple.eu:50|dedup_wf_001::982ff22ac3e845bf456b0bd5bd2d3dc9 |
---|---|
record_format |
openpolar |
spelling |
fttriple:oai:gotriple.eu:50|dedup_wf_001::982ff22ac3e845bf456b0bd5bd2d3dc9 2023-05-15T13:00:26+02:00 Data from: Timber harvest and tree size near nests explains variation in nest site occupancy but not productivity in northern goshawks (Accipiter gentilis) Rodriguez, Sabrina A. Kennedy, Patricia L. Parker, Timothy H. 2017-01-01 https://doi.org/10.5061/dryad.70s5t en eng Dryad http://dx.doi.org/10.5061/dryad.70s5t https://dx.doi.org/10.5061/dryad.70s5t lic_creative-commons 10.5061/dryad.70s5t oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:93188 oai:easy.dans.knaw.nl:easy-dataset:93188 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 re3data_____::r3d100000044 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 raptor productivity occupancy mature forest Accipiter gentilis Forest management Life sciences medicine and health care meta-analysis North America Eurasia envir hist Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2017 fttriple https://doi.org/10.5061/dryad.70s5t 2023-01-22T16:53:09Z Conservation concern for the northern goshawk (Accipiter gentilis) reflects evidence that goshawks may abandon nest sites or suffer from reduced nesting success in response to some forms of timber harvest. However, this evidence is mixed and has yet to be reviewed systemically and quantitatively. Therefore, we conducted a meta-analysis to assess the extent to which timber harvest and tree size explain variation in goshawk productivity and site occupancy. Goshawk productivity was not significantly explained by the presence of nearby timber harvest nor by the average size of nearby trees either in North America or in Eurasia or when averaged across all studies. Effect sizes differed dramatically among studies and the average effect size was close to zero (Zr = 0.04). However, timber harvest and tree size together more strongly explained goshawk occupancy of nest sites or territories. Within studies, goshawk nest sites or territories with less timber harvest nearby or relatively larger trees were, in most cases, more likely to be occupied. When we estimated average effect sizes separately for the two continents, the averages were moderate, consistent (Zr = 0.23–0.27), and significantly > 0. When we combined studies from North America and Eurasia, average effect sizes for timber harvest (Zr = 0.24) and tree size (Zr = 0.25) were similar in strength and both significantly > 0. Thus taken together, our results suggest that although both timber harvest and a lack of large trees are associated with lower occupancy by nesting goshawks, pairs that nest near timber harvest or in small trees have indistinguishable nesting success from pairs nesting in large trees or farther from timber harvest. We found substantial heterogeneity in results among studies, especially within North America, which is not surprising given that studies differed greatly in research methods, forest type, and forest management. In conclusion, our results suggest goshawk nest sites in populations of conservation concern, such as A. g. laingi, ... Dataset Accipiter gentilis Northern Goshawk Unknown |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
raptor productivity occupancy mature forest Accipiter gentilis Forest management Life sciences medicine and health care meta-analysis North America Eurasia envir hist |
spellingShingle |
raptor productivity occupancy mature forest Accipiter gentilis Forest management Life sciences medicine and health care meta-analysis North America Eurasia envir hist Rodriguez, Sabrina A. Kennedy, Patricia L. Parker, Timothy H. Data from: Timber harvest and tree size near nests explains variation in nest site occupancy but not productivity in northern goshawks (Accipiter gentilis) |
topic_facet |
raptor productivity occupancy mature forest Accipiter gentilis Forest management Life sciences medicine and health care meta-analysis North America Eurasia envir hist |
description |
Conservation concern for the northern goshawk (Accipiter gentilis) reflects evidence that goshawks may abandon nest sites or suffer from reduced nesting success in response to some forms of timber harvest. However, this evidence is mixed and has yet to be reviewed systemically and quantitatively. Therefore, we conducted a meta-analysis to assess the extent to which timber harvest and tree size explain variation in goshawk productivity and site occupancy. Goshawk productivity was not significantly explained by the presence of nearby timber harvest nor by the average size of nearby trees either in North America or in Eurasia or when averaged across all studies. Effect sizes differed dramatically among studies and the average effect size was close to zero (Zr = 0.04). However, timber harvest and tree size together more strongly explained goshawk occupancy of nest sites or territories. Within studies, goshawk nest sites or territories with less timber harvest nearby or relatively larger trees were, in most cases, more likely to be occupied. When we estimated average effect sizes separately for the two continents, the averages were moderate, consistent (Zr = 0.23–0.27), and significantly > 0. When we combined studies from North America and Eurasia, average effect sizes for timber harvest (Zr = 0.24) and tree size (Zr = 0.25) were similar in strength and both significantly > 0. Thus taken together, our results suggest that although both timber harvest and a lack of large trees are associated with lower occupancy by nesting goshawks, pairs that nest near timber harvest or in small trees have indistinguishable nesting success from pairs nesting in large trees or farther from timber harvest. We found substantial heterogeneity in results among studies, especially within North America, which is not surprising given that studies differed greatly in research methods, forest type, and forest management. In conclusion, our results suggest goshawk nest sites in populations of conservation concern, such as A. g. laingi, ... |
format |
Dataset |
author |
Rodriguez, Sabrina A. Kennedy, Patricia L. Parker, Timothy H. |
author_facet |
Rodriguez, Sabrina A. Kennedy, Patricia L. Parker, Timothy H. |
author_sort |
Rodriguez, Sabrina A. |
title |
Data from: Timber harvest and tree size near nests explains variation in nest site occupancy but not productivity in northern goshawks (Accipiter gentilis) |
title_short |
Data from: Timber harvest and tree size near nests explains variation in nest site occupancy but not productivity in northern goshawks (Accipiter gentilis) |
title_full |
Data from: Timber harvest and tree size near nests explains variation in nest site occupancy but not productivity in northern goshawks (Accipiter gentilis) |
title_fullStr |
Data from: Timber harvest and tree size near nests explains variation in nest site occupancy but not productivity in northern goshawks (Accipiter gentilis) |
title_full_unstemmed |
Data from: Timber harvest and tree size near nests explains variation in nest site occupancy but not productivity in northern goshawks (Accipiter gentilis) |
title_sort |
data from: timber harvest and tree size near nests explains variation in nest site occupancy but not productivity in northern goshawks (accipiter gentilis) |
publisher |
Dryad |
publishDate |
2017 |
url |
https://doi.org/10.5061/dryad.70s5t |
genre |
Accipiter gentilis Northern Goshawk |
genre_facet |
Accipiter gentilis Northern Goshawk |
op_source |
10.5061/dryad.70s5t oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:93188 oai:easy.dans.knaw.nl:easy-dataset:93188 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 re3data_____::r3d100000044 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 |
op_relation |
http://dx.doi.org/10.5061/dryad.70s5t https://dx.doi.org/10.5061/dryad.70s5t |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.70s5t |
_version_ |
1766250266415333376 |