Stable isotope ratios in alpine rock ptarmigan and black grouse sampled along a precipitation gradient
Rock ptarmigan (Lagopus muta) and black grouse (Tetrao tetrix) are two closely related alpine bird species that form relict populations in the European Alps. Besides manifold anthropogenic influences in this region, global climate change is forecast to lead to significant changes in temperatures and...
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ftubkonstanz:oai:kops.uni-konstanz.de:123456789/35199 2024-02-11T10:05:37+01:00 Stable isotope ratios in alpine rock ptarmigan and black grouse sampled along a precipitation gradient Dehnhard, Nina Yohannes, Elizabeth Jenny, Hannes Segelbacher, Gernot 2016 application/pdf http://nbn-resolving.de/urn:nbn:de:bsz:352-0-348936 https://doi.org/10.1016/j.baae.2016.04.007 eng eng http://nbn-resolving.de/urn:nbn:de:bsz:352-0-348936 http://dx.doi.org/10.1016/j.baae.2016.04.007 481125647 https://rightsstatements.org/page/InC/1.0/ Basic and Applied Ecology. 2016, 17(7), pp. 648-658. ISSN 1439-1791. eISSN 1618-0089. Available under: doi:10.1016/j.baae.2016.04.007 ddc:570 doc-type:article doc-type:Text 2016 ftubkonstanz https://doi.org/10.1016/j.baae.2016.04.007 2024-01-21T23:54:57Z Rock ptarmigan (Lagopus muta) and black grouse (Tetrao tetrix) are two closely related alpine bird species that form relict populations in the European Alps. Besides manifold anthropogenic influences in this region, global climate change is forecast to lead to significant changes in temperatures and precipitation. We here analysed stable isotope ratios (δ 13 C and δ 15 N) of feathers of both bird species and their potential dietary plants across a longitudinal precipitation gradient in south-east Switzerland. Plant δ 13 C was higher at higher altitudes and in drier areas (coinciding with higher longitudes) while plant δ 15 N did not differ geographically. Black grouse δ 13 C reflected the longitudinal pattern in precipitation and plant δ 13 C, and there was no indication for a change in dietary composition with precipitation (i.e. no significant changes in δ 15 N). In contrast, rock ptarmigan δ 13 C was independent of precipitation and plant δ 13 C values and showed a significant increase in δ 15 N towards drier areas, suggesting a potential dietary shift. In rock ptarmigan, we furthermore investigated intraspecific differences with age, between males and females and among years, and did not find any biologically meaningful intraspecific differences. Interspecifically, rock ptarmigan feathers had significantly higher δ 13 C and lower δ 15 N values than black grouse, reflecting a dietary segregation between both species. This may partly be due to the higher altitudinal distribution of rock ptarmigan in combination with an altitudinal gradient in plant δ 13 C. In addition, however, species also segregated in δ 15 N, most likely caused by a higher proportion of invertebrate diet in black grouse. published published Article in Journal/Newspaper Lagopus muta rock ptarmigan KOPS - The Institutional Repository of the University of Konstanz Basic and Applied Ecology 17 7 648 658 |
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KOPS - The Institutional Repository of the University of Konstanz |
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English |
topic |
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ddc:570 Dehnhard, Nina Yohannes, Elizabeth Jenny, Hannes Segelbacher, Gernot Stable isotope ratios in alpine rock ptarmigan and black grouse sampled along a precipitation gradient |
topic_facet |
ddc:570 |
description |
Rock ptarmigan (Lagopus muta) and black grouse (Tetrao tetrix) are two closely related alpine bird species that form relict populations in the European Alps. Besides manifold anthropogenic influences in this region, global climate change is forecast to lead to significant changes in temperatures and precipitation. We here analysed stable isotope ratios (δ 13 C and δ 15 N) of feathers of both bird species and their potential dietary plants across a longitudinal precipitation gradient in south-east Switzerland. Plant δ 13 C was higher at higher altitudes and in drier areas (coinciding with higher longitudes) while plant δ 15 N did not differ geographically. Black grouse δ 13 C reflected the longitudinal pattern in precipitation and plant δ 13 C, and there was no indication for a change in dietary composition with precipitation (i.e. no significant changes in δ 15 N). In contrast, rock ptarmigan δ 13 C was independent of precipitation and plant δ 13 C values and showed a significant increase in δ 15 N towards drier areas, suggesting a potential dietary shift. In rock ptarmigan, we furthermore investigated intraspecific differences with age, between males and females and among years, and did not find any biologically meaningful intraspecific differences. Interspecifically, rock ptarmigan feathers had significantly higher δ 13 C and lower δ 15 N values than black grouse, reflecting a dietary segregation between both species. This may partly be due to the higher altitudinal distribution of rock ptarmigan in combination with an altitudinal gradient in plant δ 13 C. In addition, however, species also segregated in δ 15 N, most likely caused by a higher proportion of invertebrate diet in black grouse. published published |
format |
Article in Journal/Newspaper |
author |
Dehnhard, Nina Yohannes, Elizabeth Jenny, Hannes Segelbacher, Gernot |
author_facet |
Dehnhard, Nina Yohannes, Elizabeth Jenny, Hannes Segelbacher, Gernot |
author_sort |
Dehnhard, Nina |
title |
Stable isotope ratios in alpine rock ptarmigan and black grouse sampled along a precipitation gradient |
title_short |
Stable isotope ratios in alpine rock ptarmigan and black grouse sampled along a precipitation gradient |
title_full |
Stable isotope ratios in alpine rock ptarmigan and black grouse sampled along a precipitation gradient |
title_fullStr |
Stable isotope ratios in alpine rock ptarmigan and black grouse sampled along a precipitation gradient |
title_full_unstemmed |
Stable isotope ratios in alpine rock ptarmigan and black grouse sampled along a precipitation gradient |
title_sort |
stable isotope ratios in alpine rock ptarmigan and black grouse sampled along a precipitation gradient |
publishDate |
2016 |
url |
http://nbn-resolving.de/urn:nbn:de:bsz:352-0-348936 https://doi.org/10.1016/j.baae.2016.04.007 |
genre |
Lagopus muta rock ptarmigan |
genre_facet |
Lagopus muta rock ptarmigan |
op_source |
Basic and Applied Ecology. 2016, 17(7), pp. 648-658. ISSN 1439-1791. eISSN 1618-0089. Available under: doi:10.1016/j.baae.2016.04.007 |
op_relation |
http://nbn-resolving.de/urn:nbn:de:bsz:352-0-348936 http://dx.doi.org/10.1016/j.baae.2016.04.007 481125647 |
op_rights |
https://rightsstatements.org/page/InC/1.0/ |
op_doi |
https://doi.org/10.1016/j.baae.2016.04.007 |
container_title |
Basic and Applied Ecology |
container_volume |
17 |
container_issue |
7 |
container_start_page |
648 |
op_container_end_page |
658 |
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1790602715306393600 |