Diagnosing declining grassland wader populations using simple matrix models
Many populations of wader species have shown a strong decline in number in Western-Europe in recent years. The use of simple population models such as matrix models can contribute to conserve these populations by identifying the most profitable management measures. Parameterization of such models is...
Published in: | Animal Biology |
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Language: | English |
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2009
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Online Access: | https://hdl.handle.net/11370/1662c988-2a5f-4aa6-bd1e-eda0c3cb450f https://research.rug.nl/en/publications/1662c988-2a5f-4aa6-bd1e-eda0c3cb450f https://doi.org/10.1163/157075609X417143 |
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ftunigroningenpu:oai:pure.rug.nl:publications/1662c988-2a5f-4aa6-bd1e-eda0c3cb450f 2024-06-02T08:16:00+00:00 Diagnosing declining grassland wader populations using simple matrix models Klok, Chris Roodbergen, Maja Hemerik, Lia 2009 https://hdl.handle.net/11370/1662c988-2a5f-4aa6-bd1e-eda0c3cb450f https://research.rug.nl/en/publications/1662c988-2a5f-4aa6-bd1e-eda0c3cb450f https://doi.org/10.1163/157075609X417143 eng eng https://research.rug.nl/en/publications/1662c988-2a5f-4aa6-bd1e-eda0c3cb450f info:eu-repo/semantics/closedAccess Klok , C , Roodbergen , M & Hemerik , L 2009 , ' Diagnosing declining grassland wader populations using simple matrix models ' , Animal Biology , vol. 59 , no. 1 , pp. 127-144 . https://doi.org/10.1163/157075609X417143 Viability analysis elasticity farmland birds conservation incomplete demographic data population dynamics REDSHANK TRINGA-TOTANUS GODWITS LIMOSA-LIMOSA SURVIVAL RATES CONSERVATION BIOLOGY BREEDING SUCCESS GROWTH RATE MANAGEMENT NETHERLANDS FARMLAND SCHEMES article 2009 ftunigroningenpu https://doi.org/10.1163/157075609X417143 2024-05-07T18:39:25Z Many populations of wader species have shown a strong decline in number in Western-Europe in recent years. The use of simple population models such as matrix models can contribute to conserve these populations by identifying the most profitable management measures. Parameterization of such models is often hampered by the availability of demographic data (survival and reproduction). In particular, data on survival in the pre-adult (immature) stage of wader species that remain in wintering areas outside Europe are notoriously difficult to obtain, and are therefore virtually absent in the literature. To diagnose population decline in the wader species; Black-tailed Godwit, Curlew, Lapwing, Oystercatcher, and Redshank, we extended an existing modelling framework in which incomplete demographic data can be analysed, developed for species with a pre-adult stage of one year. The framework is based on a Leslie matrix model with three parameters: yearly reproduction (number of fledglings per pair), yearly pre-adult (immature) and yearly adult (mature) survival. The yearly population growth rate of these populations and the relative sensitivity of this rate to changes in survival and reproduction parameters (the elasticity) were calculated numerically and, if possible, analytically. The results showed a decrease in dependence on reproduction and an increase in pre-adult survival of the population growth rate with an increase in the duration of the pre-adult stage. In general, adult survival had the highest elasticity, but elasticity of pre-adult survival increased with time to first reproduction, a result not reported earlier. Model results showed that adult survival and reproduction estimates reported for populations of Redshank and Curlew were too low to maintain viable populations. Based on the elasticity patterns and the scope for increase in actual demographic parameters we inferred that conservation of the Redshank and both Curlew populations should focus on reproduction. For one Oystercatcher and the Black-tailed ... Article in Journal/Newspaper black-tailed godwit Limosa limosa University of Groningen research database Animal Biology 59 1 127 144 |
institution |
Open Polar |
collection |
University of Groningen research database |
op_collection_id |
ftunigroningenpu |
language |
English |
topic |
Viability analysis elasticity farmland birds conservation incomplete demographic data population dynamics REDSHANK TRINGA-TOTANUS GODWITS LIMOSA-LIMOSA SURVIVAL RATES CONSERVATION BIOLOGY BREEDING SUCCESS GROWTH RATE MANAGEMENT NETHERLANDS FARMLAND SCHEMES |
spellingShingle |
Viability analysis elasticity farmland birds conservation incomplete demographic data population dynamics REDSHANK TRINGA-TOTANUS GODWITS LIMOSA-LIMOSA SURVIVAL RATES CONSERVATION BIOLOGY BREEDING SUCCESS GROWTH RATE MANAGEMENT NETHERLANDS FARMLAND SCHEMES Klok, Chris Roodbergen, Maja Hemerik, Lia Diagnosing declining grassland wader populations using simple matrix models |
topic_facet |
Viability analysis elasticity farmland birds conservation incomplete demographic data population dynamics REDSHANK TRINGA-TOTANUS GODWITS LIMOSA-LIMOSA SURVIVAL RATES CONSERVATION BIOLOGY BREEDING SUCCESS GROWTH RATE MANAGEMENT NETHERLANDS FARMLAND SCHEMES |
description |
Many populations of wader species have shown a strong decline in number in Western-Europe in recent years. The use of simple population models such as matrix models can contribute to conserve these populations by identifying the most profitable management measures. Parameterization of such models is often hampered by the availability of demographic data (survival and reproduction). In particular, data on survival in the pre-adult (immature) stage of wader species that remain in wintering areas outside Europe are notoriously difficult to obtain, and are therefore virtually absent in the literature. To diagnose population decline in the wader species; Black-tailed Godwit, Curlew, Lapwing, Oystercatcher, and Redshank, we extended an existing modelling framework in which incomplete demographic data can be analysed, developed for species with a pre-adult stage of one year. The framework is based on a Leslie matrix model with three parameters: yearly reproduction (number of fledglings per pair), yearly pre-adult (immature) and yearly adult (mature) survival. The yearly population growth rate of these populations and the relative sensitivity of this rate to changes in survival and reproduction parameters (the elasticity) were calculated numerically and, if possible, analytically. The results showed a decrease in dependence on reproduction and an increase in pre-adult survival of the population growth rate with an increase in the duration of the pre-adult stage. In general, adult survival had the highest elasticity, but elasticity of pre-adult survival increased with time to first reproduction, a result not reported earlier. Model results showed that adult survival and reproduction estimates reported for populations of Redshank and Curlew were too low to maintain viable populations. Based on the elasticity patterns and the scope for increase in actual demographic parameters we inferred that conservation of the Redshank and both Curlew populations should focus on reproduction. For one Oystercatcher and the Black-tailed ... |
format |
Article in Journal/Newspaper |
author |
Klok, Chris Roodbergen, Maja Hemerik, Lia |
author_facet |
Klok, Chris Roodbergen, Maja Hemerik, Lia |
author_sort |
Klok, Chris |
title |
Diagnosing declining grassland wader populations using simple matrix models |
title_short |
Diagnosing declining grassland wader populations using simple matrix models |
title_full |
Diagnosing declining grassland wader populations using simple matrix models |
title_fullStr |
Diagnosing declining grassland wader populations using simple matrix models |
title_full_unstemmed |
Diagnosing declining grassland wader populations using simple matrix models |
title_sort |
diagnosing declining grassland wader populations using simple matrix models |
publishDate |
2009 |
url |
https://hdl.handle.net/11370/1662c988-2a5f-4aa6-bd1e-eda0c3cb450f https://research.rug.nl/en/publications/1662c988-2a5f-4aa6-bd1e-eda0c3cb450f https://doi.org/10.1163/157075609X417143 |
genre |
black-tailed godwit Limosa limosa |
genre_facet |
black-tailed godwit Limosa limosa |
op_source |
Klok , C , Roodbergen , M & Hemerik , L 2009 , ' Diagnosing declining grassland wader populations using simple matrix models ' , Animal Biology , vol. 59 , no. 1 , pp. 127-144 . https://doi.org/10.1163/157075609X417143 |
op_relation |
https://research.rug.nl/en/publications/1662c988-2a5f-4aa6-bd1e-eda0c3cb450f |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1163/157075609X417143 |
container_title |
Animal Biology |
container_volume |
59 |
container_issue |
1 |
container_start_page |
127 |
op_container_end_page |
144 |
_version_ |
1800740326144475136 |