Declining home range area predicts reduced late-life survival in two wild ungulate populations

Froy, Hannah; Borger, Luca; Regan, Charlotte E.; Morris, Alison; Morris, Sean; Pilkington, Jill G.; Crawley, Michael J.; Clutton-Brock, Tim H.; Pemberton, Josephine M.; Nussey, Daniel H.

doi:10.1111/ele.12965

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Declining home range area predicts reduced late-life survival in two wild ungulate populations

Hannah Froy, Luca Borger

, Charlotte E. Regan, Alison Morris, Sean Morris, Jill G. Pilkington, Michael J. Crawley, Tim H. Clutton-Brock, Josephine M. Pemberton, Daniel H. Nussey

Ecology Letters, Volume: 21, Issue: 7, Pages: 1001 - 1009

Swansea University Author: Luca Borger

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DOI (Published version): 10.1111/ele.12965

Abstract

Demographic senescence is increasingly recognised as an important force shaping the dynamics of wild vertebrate populations. However, our understanding of the processes that underpin these declines in survival and fertility in old age remains limited. Evidence for age‐related changes in foraging beh...

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Published in:	Ecology Letters
ISSN:	1461023X
Published:	2018
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa39543
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first_indexed	2018-04-23T04:43:43Z
last_indexed	2021-07-17T03:00:05Z
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spelling	2021-07-16T14:25:09.4193688 v2 39543 2018-04-23 Declining home range area predicts reduced late-life survival in two wild ungulate populations 8416d0ffc3cccdad6e6d67a455e7c4a2 0000-0001-8763-5997 Luca Borger Luca Borger true false 2018-04-23 SBI Demographic senescence is increasingly recognised as an important force shaping the dynamics of wild vertebrate populations. However, our understanding of the processes that underpin these declines in survival and fertility in old age remains limited. Evidence for age‐related changes in foraging behaviour and habitat use is emerging from wild vertebrate studies, but the extent to which these are driven by within‐individual changes, and the consequences for fitness, remain unclear. Using longitudinal census observations collected over four decades from two long‐term individual‐based studies of unmanaged ungulates, we demonstrate consistent within‐individual declines in home range area with age in adult females. In both systems, we found that within‐individual decreases in home range area were associated with increased risk of mortality the following year. Our results provide the first evidence from the wild that age‐related changes in space use are predictive of adult mortality. Journal Article Ecology Letters 21 7 1001 1009 1461023X Ageing, fitness, home range, Isle of Rum, longitudinal study, red deer, Elaphus cervus , senescence, Soay sheep, Ovis aries , space use, St Kilda 31 7 2018 2018-07-31 10.1111/ele.12965 COLLEGE NANME Biosciences COLLEGE CODE SBI Swansea University 2021-07-16T14:25:09.4193688 2018-04-23T02:35:13.1896064 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Hannah Froy 1 Luca Borger 0000-0001-8763-5997 2 Charlotte E. Regan 3 Alison Morris 4 Sean Morris 5 Jill G. Pilkington 6 Michael J. Crawley 7 Tim H. Clutton-Brock 8 Josephine M. Pemberton 9 Daniel H. Nussey 10 0039543-01052018140246.pdf 39543.pdf 2018-05-01T14:02:46.6800000 Output 3325390 application/pdf Version of Record true 2018-05-01T00:00:00.0000000 This is an open access article under the terms of the Creative Commons Attribution License. true eng
title	Declining home range area predicts reduced late-life survival in two wild ungulate populations
spellingShingle	Declining home range area predicts reduced late-life survival in two wild ungulate populations Luca Borger
title_short	Declining home range area predicts reduced late-life survival in two wild ungulate populations
title_full	Declining home range area predicts reduced late-life survival in two wild ungulate populations
title_fullStr	Declining home range area predicts reduced late-life survival in two wild ungulate populations
title_full_unstemmed	Declining home range area predicts reduced late-life survival in two wild ungulate populations
title_sort	Declining home range area predicts reduced late-life survival in two wild ungulate populations
author_id_str_mv	8416d0ffc3cccdad6e6d67a455e7c4a2
author_id_fullname_str_mv	8416d0ffc3cccdad6e6d67a455e7c4a2_***_Luca Borger
author	Luca Borger
author2	Hannah Froy Luca Borger Charlotte E. Regan Alison Morris Sean Morris Jill G. Pilkington Michael J. Crawley Tim H. Clutton-Brock Josephine M. Pemberton Daniel H. Nussey
format	Journal article
container_title	Ecology Letters
container_volume	21
container_issue	7
container_start_page	1001
publishDate	2018
institution	Swansea University
issn	1461023X
doi_str_mv	10.1111/ele.12965
college_str	Faculty of Science and Engineering
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hierarchy_top_id	facultyofscienceandengineering
hierarchy_top_title	Faculty of Science and Engineering
hierarchy_parent_id	facultyofscienceandengineering
hierarchy_parent_title	Faculty of Science and Engineering
department_str	School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
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description	Demographic senescence is increasingly recognised as an important force shaping the dynamics of wild vertebrate populations. However, our understanding of the processes that underpin these declines in survival and fertility in old age remains limited. Evidence for age‐related changes in foraging behaviour and habitat use is emerging from wild vertebrate studies, but the extent to which these are driven by within‐individual changes, and the consequences for fitness, remain unclear. Using longitudinal census observations collected over four decades from two long‐term individual‐based studies of unmanaged ungulates, we demonstrate consistent within‐individual declines in home range area with age in adult females. In both systems, we found that within‐individual decreases in home range area were associated with increased risk of mortality the following year. Our results provide the first evidence from the wild that age‐related changes in space use are predictive of adult mortality.
published_date	2018-07-31T03:50:14Z
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Declining home range area predicts reduced late-life survival in two wild ungulate populations

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