The worldwide variation in avian clutch size across species and space.

Traits such as clutch size vary markedly across species and environmental gradients but have usually been investigated from either a comparative or a geographic perspective, respectively. We analyzed the global variation in clutch size across 5,290 bird species, excluding brood parasites and pelagic...

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Autores principales:	Walter Jetz, Cagan H Sekercioglu, Katrin Böhning-Gaese
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2008
Materias:	Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/4a9300256d1749fca2f560fc01c42ec5
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spelling	oai:doaj.org-article:4a9300256d1749fca2f560fc01c42ec52021-11-25T05:33:52ZThe worldwide variation in avian clutch size across species and space.1544-91731545-788510.1371/journal.pbio.0060303https://doaj.org/article/4a9300256d1749fca2f560fc01c42ec52008-12-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/19071959/pdf/?tool=EBIhttps://doaj.org/toc/1544-9173https://doaj.org/toc/1545-7885Traits such as clutch size vary markedly across species and environmental gradients but have usually been investigated from either a comparative or a geographic perspective, respectively. We analyzed the global variation in clutch size across 5,290 bird species, excluding brood parasites and pelagic species. We integrated intrinsic (morphological, behavioural), extrinsic (environmental), and phylogenetic effects in a combined model that predicts up to 68% of the interspecific variation in clutch size. We then applied the same species-level model to predict mean clutch size across 2,521 assemblages worldwide and found that it explains the observed eco-geographic pattern very well. Clutches are consistently largest in cavity nesters and in species occupying seasonal environments, highlighting the importance of offspring and adult mortality that is jointly expressed in intrinsic and extrinsic correlates. The findings offer a conceptual bridge between macroecology and comparative biology and provide a global and integrative understanding of the eco-geographic and cross-species variation in a core life-history trait.Walter JetzCagan H SekerciogluKatrin Böhning-GaesePublic Library of Science (PLoS)articleBiology (General)QH301-705.5ENPLoS Biology, Vol 6, Iss 12, Pp 2650-2657 (2008)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biology (General) QH301-705.5
spellingShingle	Biology (General) QH301-705.5 Walter Jetz Cagan H Sekercioglu Katrin Böhning-Gaese The worldwide variation in avian clutch size across species and space.
description	Traits such as clutch size vary markedly across species and environmental gradients but have usually been investigated from either a comparative or a geographic perspective, respectively. We analyzed the global variation in clutch size across 5,290 bird species, excluding brood parasites and pelagic species. We integrated intrinsic (morphological, behavioural), extrinsic (environmental), and phylogenetic effects in a combined model that predicts up to 68% of the interspecific variation in clutch size. We then applied the same species-level model to predict mean clutch size across 2,521 assemblages worldwide and found that it explains the observed eco-geographic pattern very well. Clutches are consistently largest in cavity nesters and in species occupying seasonal environments, highlighting the importance of offspring and adult mortality that is jointly expressed in intrinsic and extrinsic correlates. The findings offer a conceptual bridge between macroecology and comparative biology and provide a global and integrative understanding of the eco-geographic and cross-species variation in a core life-history trait.
format	article
author	Walter Jetz Cagan H Sekercioglu Katrin Böhning-Gaese
author_facet	Walter Jetz Cagan H Sekercioglu Katrin Böhning-Gaese
author_sort	Walter Jetz
title	The worldwide variation in avian clutch size across species and space.
title_short	The worldwide variation in avian clutch size across species and space.
title_full	The worldwide variation in avian clutch size across species and space.
title_fullStr	The worldwide variation in avian clutch size across species and space.
title_full_unstemmed	The worldwide variation in avian clutch size across species and space.
title_sort	worldwide variation in avian clutch size across species and space.
publisher	Public Library of Science (PLoS)
publishDate	2008
url	https://doaj.org/article/4a9300256d1749fca2f560fc01c42ec5
work_keys_str_mv	AT walterjetz theworldwidevariationinavianclutchsizeacrossspeciesandspace AT caganhsekercioglu theworldwidevariationinavianclutchsizeacrossspeciesandspace AT katrinbohninggaese theworldwidevariationinavianclutchsizeacrossspeciesandspace AT walterjetz worldwidevariationinavianclutchsizeacrossspeciesandspace AT caganhsekercioglu worldwidevariationinavianclutchsizeacrossspeciesandspace AT katrinbohninggaese worldwidevariationinavianclutchsizeacrossspeciesandspace
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The worldwide variation in avian clutch size across species and space.

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