Synchronization of animal population dynamics by large-scale climate

Eric S Post, Mads C. Forchhammer

Research output: Contribution to journalArticle

208 Citations (Scopus)

Abstract

The hypothesis that animal population dynamics may be synchronized by climate is highly relevant in the context of climate change because it suggests that several populations might respond simultaneously to climatic trends if their dynamics are entrained by environmental correlation. The dynamics of many species throughout the Northern Hemisphere are influenced by a single large-scale climate system, the North Atlantic Oscillation (NAO), which exerts highly correlated regional effects on local weather. But efforts to attribute synchronous fluctuations of contiguous populations to large-scale climate are confounded by the synchronizing influences of dispersal or trophic interactions. Here we report that the dynamics of caribou and musk oxen on opposite coasts of Greenland show spatial synchrony among populations of both species that correlates with the NAO index. Our analysis shows that the NAO has an influence in the high degree of cross-species synchrony between pairs of caribou and musk oxen populations separated by a minimum of 1,000 km of inland ice. The vast distances, and complete physical and ecological separation of these species, rule out spatial coupling by dispersal or interaction. These results indicate that animal populations of different species may respond synchronously to global climate change over large regions.

Original languageEnglish (US)
Pages (from-to)168-171
Number of pages4
JournalNature
Volume420
Issue number6912
DOIs
StatePublished - Nov 14 2002

Fingerprint

Population Dynamics
Climate
Reindeer
Population
Climate Change
Greenland
Weather
Ice
musk

All Science Journal Classification (ASJC) codes

  • Medicine(all)
  • General

Cite this

Post, Eric S ; Forchhammer, Mads C. / Synchronization of animal population dynamics by large-scale climate. In: Nature. 2002 ; Vol. 420, No. 6912. pp. 168-171.
@article{0e32aefa22934debb99b16e399c1661d,
title = "Synchronization of animal population dynamics by large-scale climate",
abstract = "The hypothesis that animal population dynamics may be synchronized by climate is highly relevant in the context of climate change because it suggests that several populations might respond simultaneously to climatic trends if their dynamics are entrained by environmental correlation. The dynamics of many species throughout the Northern Hemisphere are influenced by a single large-scale climate system, the North Atlantic Oscillation (NAO), which exerts highly correlated regional effects on local weather. But efforts to attribute synchronous fluctuations of contiguous populations to large-scale climate are confounded by the synchronizing influences of dispersal or trophic interactions. Here we report that the dynamics of caribou and musk oxen on opposite coasts of Greenland show spatial synchrony among populations of both species that correlates with the NAO index. Our analysis shows that the NAO has an influence in the high degree of cross-species synchrony between pairs of caribou and musk oxen populations separated by a minimum of 1,000 km of inland ice. The vast distances, and complete physical and ecological separation of these species, rule out spatial coupling by dispersal or interaction. These results indicate that animal populations of different species may respond synchronously to global climate change over large regions.",
author = "Post, {Eric S} and Forchhammer, {Mads C.}",
year = "2002",
month = "11",
day = "14",
doi = "10.1038/nature01064",
language = "English (US)",
volume = "420",
pages = "168--171",
journal = "Nature",
issn = "0028-0836",
publisher = "Nature Publishing Group",
number = "6912",

}

Synchronization of animal population dynamics by large-scale climate. / Post, Eric S; Forchhammer, Mads C.

In: Nature, Vol. 420, No. 6912, 14.11.2002, p. 168-171.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Synchronization of animal population dynamics by large-scale climate

AU - Post, Eric S

AU - Forchhammer, Mads C.

PY - 2002/11/14

Y1 - 2002/11/14

N2 - The hypothesis that animal population dynamics may be synchronized by climate is highly relevant in the context of climate change because it suggests that several populations might respond simultaneously to climatic trends if their dynamics are entrained by environmental correlation. The dynamics of many species throughout the Northern Hemisphere are influenced by a single large-scale climate system, the North Atlantic Oscillation (NAO), which exerts highly correlated regional effects on local weather. But efforts to attribute synchronous fluctuations of contiguous populations to large-scale climate are confounded by the synchronizing influences of dispersal or trophic interactions. Here we report that the dynamics of caribou and musk oxen on opposite coasts of Greenland show spatial synchrony among populations of both species that correlates with the NAO index. Our analysis shows that the NAO has an influence in the high degree of cross-species synchrony between pairs of caribou and musk oxen populations separated by a minimum of 1,000 km of inland ice. The vast distances, and complete physical and ecological separation of these species, rule out spatial coupling by dispersal or interaction. These results indicate that animal populations of different species may respond synchronously to global climate change over large regions.

AB - The hypothesis that animal population dynamics may be synchronized by climate is highly relevant in the context of climate change because it suggests that several populations might respond simultaneously to climatic trends if their dynamics are entrained by environmental correlation. The dynamics of many species throughout the Northern Hemisphere are influenced by a single large-scale climate system, the North Atlantic Oscillation (NAO), which exerts highly correlated regional effects on local weather. But efforts to attribute synchronous fluctuations of contiguous populations to large-scale climate are confounded by the synchronizing influences of dispersal or trophic interactions. Here we report that the dynamics of caribou and musk oxen on opposite coasts of Greenland show spatial synchrony among populations of both species that correlates with the NAO index. Our analysis shows that the NAO has an influence in the high degree of cross-species synchrony between pairs of caribou and musk oxen populations separated by a minimum of 1,000 km of inland ice. The vast distances, and complete physical and ecological separation of these species, rule out spatial coupling by dispersal or interaction. These results indicate that animal populations of different species may respond synchronously to global climate change over large regions.

UR - http://www.scopus.com/inward/record.url?scp=0037079018&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037079018&partnerID=8YFLogxK

U2 - 10.1038/nature01064

DO - 10.1038/nature01064

M3 - Article

C2 - 12432390

AN - SCOPUS:0037079018

VL - 420

SP - 168

EP - 171

JO - Nature

JF - Nature

SN - 0028-0836

IS - 6912

ER -