Use of stable isotopes to investigate individual differences in diets and mercury exposures among common terns Sterna hirundo in breeding and wintering grounds
© 2002 Inter-Research DOI:10.3354/meps242267 We measured variations in stable isotope signatures (δ¹³C and δ¹⁵N) and concentrations of mercury (Hg) in breast feathers from pairs of common terns Sterna hirundo and their chicks at a breeding site in Buzzards Bay, northwestern Atlantic Ocean. By collec...
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2002
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Online Access: | http://hdl.handle.net/1853/43098 https://doi.org/10.3354/meps242267 |
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ftgeorgiatech:oai:repository.gatech.edu:1853/43098 2024-06-02T08:05:28+00:00 Use of stable isotopes to investigate individual differences in diets and mercury exposures among common terns Sterna hirundo in breeding and wintering grounds Nisbet, Ian C. T. Montoya, Joseph P. Burger, Joanna Hatch, Jeremy J. I.C.T. Nisbet & Company Harvard University. Dept. of Organismic and Evolutionary Biology Rutgers University. Dept. of Biological Sciences University of Massachusetts. Dept. of Biology 2002-10-22 application/pdf http://hdl.handle.net/1853/43098 https://doi.org/10.3354/meps242267 en_US eng Georgia Institute of Technology Inter-Research Nisbet, I.C.T., J.P. Montoya, J. Burger, and J.J. Hatch. 2002. Use of stable isotopes to investigate individual differences in diets and mercury exposures among common terns Sterna hirundo in breeding and wintering grounds. Marine Ecology Progress Series 242: 267-274. doi:10.3354/meps242267 0171-8630 http://hdl.handle.net/1853/43098 Common tern Diet Feathers Foraging Mercury Stable isotopes Sterna hirundo Trophic web Text Article 2002 ftgeorgiatech https://doi.org/10.3354/meps242267 2024-05-06T11:34:02Z © 2002 Inter-Research DOI:10.3354/meps242267 We measured variations in stable isotope signatures (δ¹³C and δ¹⁵N) and concentrations of mercury (Hg) in breast feathers from pairs of common terns Sterna hirundo and their chicks at a breeding site in Buzzards Bay, northwestern Atlantic Ocean. By collecting 2 sets of feathers from the same adult birds, we compared values of δ¹³C, δ¹⁵N and Hg in feathers grown in the wintering area in the South Atlantic Ocean (‘southern’ feathers) and in the breeding area (‘regrown’ feathers). Regrown feathers had lower δ¹³C, higher δ¹⁵N and higher Hg than southern feathers. Values of δ¹³C , δ¹⁵N and Hg were much more variable in adults than chicks. Within families, δ¹³C and δ¹⁵N were correlated between parents and chicks; Hg was correlated between male and female parents. Among regrown feathers, Hg was positively correlated with δ¹³C and negatively correlated with δ¹⁵N. These findings suggest that high individual exposure of common terns to Hg results from consumption of inshore prey at low trophic levels in restricted parts of Buzzards Bay and that members of pairs have similar diets in the breeding season but not in winter. They demonstrate the power of stable isotope analyses in revealing individual differences in foraging habits, diet and contaminant exposure in generalist predators. Article in Journal/Newspaper Common tern South Atlantic Ocean Sterna hirundo Georgia Institute of Technology: SMARTech - Scholarly Materials and Research at Georgia Tech Marine Ecology Progress Series 242 267 274 |
institution |
Open Polar |
collection |
Georgia Institute of Technology: SMARTech - Scholarly Materials and Research at Georgia Tech |
op_collection_id |
ftgeorgiatech |
language |
English |
topic |
Common tern Diet Feathers Foraging Mercury Stable isotopes Sterna hirundo Trophic web |
spellingShingle |
Common tern Diet Feathers Foraging Mercury Stable isotopes Sterna hirundo Trophic web Nisbet, Ian C. T. Montoya, Joseph P. Burger, Joanna Hatch, Jeremy J. Use of stable isotopes to investigate individual differences in diets and mercury exposures among common terns Sterna hirundo in breeding and wintering grounds |
topic_facet |
Common tern Diet Feathers Foraging Mercury Stable isotopes Sterna hirundo Trophic web |
description |
© 2002 Inter-Research DOI:10.3354/meps242267 We measured variations in stable isotope signatures (δ¹³C and δ¹⁵N) and concentrations of mercury (Hg) in breast feathers from pairs of common terns Sterna hirundo and their chicks at a breeding site in Buzzards Bay, northwestern Atlantic Ocean. By collecting 2 sets of feathers from the same adult birds, we compared values of δ¹³C, δ¹⁵N and Hg in feathers grown in the wintering area in the South Atlantic Ocean (‘southern’ feathers) and in the breeding area (‘regrown’ feathers). Regrown feathers had lower δ¹³C, higher δ¹⁵N and higher Hg than southern feathers. Values of δ¹³C , δ¹⁵N and Hg were much more variable in adults than chicks. Within families, δ¹³C and δ¹⁵N were correlated between parents and chicks; Hg was correlated between male and female parents. Among regrown feathers, Hg was positively correlated with δ¹³C and negatively correlated with δ¹⁵N. These findings suggest that high individual exposure of common terns to Hg results from consumption of inshore prey at low trophic levels in restricted parts of Buzzards Bay and that members of pairs have similar diets in the breeding season but not in winter. They demonstrate the power of stable isotope analyses in revealing individual differences in foraging habits, diet and contaminant exposure in generalist predators. |
author2 |
I.C.T. Nisbet & Company Harvard University. Dept. of Organismic and Evolutionary Biology Rutgers University. Dept. of Biological Sciences University of Massachusetts. Dept. of Biology |
format |
Article in Journal/Newspaper |
author |
Nisbet, Ian C. T. Montoya, Joseph P. Burger, Joanna Hatch, Jeremy J. |
author_facet |
Nisbet, Ian C. T. Montoya, Joseph P. Burger, Joanna Hatch, Jeremy J. |
author_sort |
Nisbet, Ian C. T. |
title |
Use of stable isotopes to investigate individual differences in diets and mercury exposures among common terns Sterna hirundo in breeding and wintering grounds |
title_short |
Use of stable isotopes to investigate individual differences in diets and mercury exposures among common terns Sterna hirundo in breeding and wintering grounds |
title_full |
Use of stable isotopes to investigate individual differences in diets and mercury exposures among common terns Sterna hirundo in breeding and wintering grounds |
title_fullStr |
Use of stable isotopes to investigate individual differences in diets and mercury exposures among common terns Sterna hirundo in breeding and wintering grounds |
title_full_unstemmed |
Use of stable isotopes to investigate individual differences in diets and mercury exposures among common terns Sterna hirundo in breeding and wintering grounds |
title_sort |
use of stable isotopes to investigate individual differences in diets and mercury exposures among common terns sterna hirundo in breeding and wintering grounds |
publisher |
Georgia Institute of Technology |
publishDate |
2002 |
url |
http://hdl.handle.net/1853/43098 https://doi.org/10.3354/meps242267 |
genre |
Common tern South Atlantic Ocean Sterna hirundo |
genre_facet |
Common tern South Atlantic Ocean Sterna hirundo |
op_relation |
Nisbet, I.C.T., J.P. Montoya, J. Burger, and J.J. Hatch. 2002. Use of stable isotopes to investigate individual differences in diets and mercury exposures among common terns Sterna hirundo in breeding and wintering grounds. Marine Ecology Progress Series 242: 267-274. doi:10.3354/meps242267 0171-8630 http://hdl.handle.net/1853/43098 |
op_doi |
https://doi.org/10.3354/meps242267 |
container_title |
Marine Ecology Progress Series |
container_volume |
242 |
container_start_page |
267 |
op_container_end_page |
274 |
_version_ |
1800750281168781312 |