Apparent annual survival of staging ruffs during a period of population decline: insights from sex and site-use related differences
The ruff Philomachus pugnax, a lekkingshorebird wintering in Africa and breeding across northernEurasia, declined severely in its western range. Based on acapture-mark-resighting programme (2004–2011) in thewesternmost staging area in Friesland (the Netherlands),we investigated changes in apparent a...
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Language: | English |
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2015
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Online Access: | https://www.vliz.be/imisdocs/publications/91/281291.pdf |
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ftnioz:oai:imis.nioz.nl:251484 2023-05-15T17:58:40+02:00 Apparent annual survival of staging ruffs during a period of population decline: insights from sex and site-use related differences Schmaltz, L.E. Juillet, C. Tinbergen, J.M. Verkuil, Y.I. Hooijmeijer, J.C.E.W. Piersma, T. 2015 application/pdf https://www.vliz.be/imisdocs/publications/91/281291.pdf en eng info:eu-repo/semantics/altIdentifier/wos/000363957300007 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1007/s10144-015-0511-4 https://www.vliz.be/imisdocs/publications/91/281291.pdf info:eu-repo/semantics/openAccess %3Ci%3EPopul.+Ecol.+57%284%29%3C%2Fi%3E%3A+613-624.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1007%2Fs10144-015-0511-4%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1007%2Fs10144-015-0511-4%3C%2Fa%3E Philomachus pugnax (Linnaeus 1758) [ruff] info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2015 ftnioz https://doi.org/10.1007/s10144-015-0511-4 2022-05-01T14:02:21Z The ruff Philomachus pugnax, a lekkingshorebird wintering in Africa and breeding across northernEurasia, declined severely in its western range. Based on acapture-mark-resighting programme (2004–2011) in thewesternmost staging area in Friesland (the Netherlands),we investigated changes in apparent annual survival inrelation to age and sex to explore potential causes ofdecline. We also related temporal variation in apparentsurvival to environmental factors. We used the Capture-Mark-Recapture multievent statistical framework to overcomebiases in survival estimates after testing for hiddenheterogeneity of detection. This enabled the estimation ofthe probability to belong to high or low detectabilityclasses. Apparent survival varied between years but wasnot related to weather patterns along the flyway, or to floodlevels in the Sahel. Over time, a decline in apparent survivalis suggested. Due to a short data series and flag loss inthe last period this cannot be verified. Nevertheless, thepatterns in sex-specific detectability and survival lead tonew biological insights. Among highly detectable birds,supposedly most reliant on Friesland, males survived betterthan females (?/HDmales = 0.74, range 0.51–0.93;?/HDfemales = 0.51, range 0.24–0.81). Among lowdetectable birds, the pattern is reversed (?/LDmales = 0.64,range 0.37–0.89; ?/LDfemales = 0.73, range 0.48–0.93).Probably the staging population contains a mixture of sexspecificmigration strategies. A loss of staging femalescould greatly affect the dynamics of the western ruffpopulation. Further unravelling of these population processesrequires geographically extended demographicmonitoring and the use of tracking devices. Article in Journal/Newspaper Philomachus pugnax Ruff NIOZ Repository (Royal Netherlands Institute for Sea Research) Population Ecology 57 4 613 624 |
institution |
Open Polar |
collection |
NIOZ Repository (Royal Netherlands Institute for Sea Research) |
op_collection_id |
ftnioz |
language |
English |
topic |
Philomachus pugnax (Linnaeus 1758) [ruff] |
spellingShingle |
Philomachus pugnax (Linnaeus 1758) [ruff] Schmaltz, L.E. Juillet, C. Tinbergen, J.M. Verkuil, Y.I. Hooijmeijer, J.C.E.W. Piersma, T. Apparent annual survival of staging ruffs during a period of population decline: insights from sex and site-use related differences |
topic_facet |
Philomachus pugnax (Linnaeus 1758) [ruff] |
description |
The ruff Philomachus pugnax, a lekkingshorebird wintering in Africa and breeding across northernEurasia, declined severely in its western range. Based on acapture-mark-resighting programme (2004–2011) in thewesternmost staging area in Friesland (the Netherlands),we investigated changes in apparent annual survival inrelation to age and sex to explore potential causes ofdecline. We also related temporal variation in apparentsurvival to environmental factors. We used the Capture-Mark-Recapture multievent statistical framework to overcomebiases in survival estimates after testing for hiddenheterogeneity of detection. This enabled the estimation ofthe probability to belong to high or low detectabilityclasses. Apparent survival varied between years but wasnot related to weather patterns along the flyway, or to floodlevels in the Sahel. Over time, a decline in apparent survivalis suggested. Due to a short data series and flag loss inthe last period this cannot be verified. Nevertheless, thepatterns in sex-specific detectability and survival lead tonew biological insights. Among highly detectable birds,supposedly most reliant on Friesland, males survived betterthan females (?/HDmales = 0.74, range 0.51–0.93;?/HDfemales = 0.51, range 0.24–0.81). Among lowdetectable birds, the pattern is reversed (?/LDmales = 0.64,range 0.37–0.89; ?/LDfemales = 0.73, range 0.48–0.93).Probably the staging population contains a mixture of sexspecificmigration strategies. A loss of staging femalescould greatly affect the dynamics of the western ruffpopulation. Further unravelling of these population processesrequires geographically extended demographicmonitoring and the use of tracking devices. |
format |
Article in Journal/Newspaper |
author |
Schmaltz, L.E. Juillet, C. Tinbergen, J.M. Verkuil, Y.I. Hooijmeijer, J.C.E.W. Piersma, T. |
author_facet |
Schmaltz, L.E. Juillet, C. Tinbergen, J.M. Verkuil, Y.I. Hooijmeijer, J.C.E.W. Piersma, T. |
author_sort |
Schmaltz, L.E. |
title |
Apparent annual survival of staging ruffs during a period of population decline: insights from sex and site-use related differences |
title_short |
Apparent annual survival of staging ruffs during a period of population decline: insights from sex and site-use related differences |
title_full |
Apparent annual survival of staging ruffs during a period of population decline: insights from sex and site-use related differences |
title_fullStr |
Apparent annual survival of staging ruffs during a period of population decline: insights from sex and site-use related differences |
title_full_unstemmed |
Apparent annual survival of staging ruffs during a period of population decline: insights from sex and site-use related differences |
title_sort |
apparent annual survival of staging ruffs during a period of population decline: insights from sex and site-use related differences |
publishDate |
2015 |
url |
https://www.vliz.be/imisdocs/publications/91/281291.pdf |
genre |
Philomachus pugnax Ruff |
genre_facet |
Philomachus pugnax Ruff |
op_source |
%3Ci%3EPopul.+Ecol.+57%284%29%3C%2Fi%3E%3A+613-624.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1007%2Fs10144-015-0511-4%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1007%2Fs10144-015-0511-4%3C%2Fa%3E |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/000363957300007 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1007/s10144-015-0511-4 https://www.vliz.be/imisdocs/publications/91/281291.pdf |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1007/s10144-015-0511-4 |
container_title |
Population Ecology |
container_volume |
57 |
container_issue |
4 |
container_start_page |
613 |
op_container_end_page |
624 |
_version_ |
1766167362639233024 |