Large mammals often play critical roles within ecosystems by affecting
either prey populations or the structure and species composition
of surrounding vegetation. However, large mammals are highly vulnerable
to extirpation by humans and consequently, severe contractions of
species ranges result in intact large mammal faunas becoming increasingly
rare. We compared historical (AD 1500) range maps of large mammals
with their current distributions to determine which areas today retain
complete assemblages of large mammals. We estimate that less than
21% of the earth's terrestrial surface still contains all
of the large (>20 kg) mammals it once held, with the proportion
varying between 68% in Australasia to only 1% in Indomalaya.
Although the presence of large mammals offers no guarantee of the
presence of all smaller animals, their absence represents an ecologically
based measurement of human impacts on biodiversity. Given the ecological
importance of large mammals and their vulnerability to extinction,
better protection and extension of sites containing complete assemblages
of large mammals is urgently needed.
Description
Presence or absence of large mammals as an indicator for human impact.
%0 Journal Article
%1 Morrison2007
%A Morrison, John C.
%A Sechrest, Wes
%A Dinerstein, Eric
%A Wilcove, David S.
%A Lamoreux, John F.
%D 2007
%J Journal of Mammalogy
%K global historic_range human_impact large_mammals range_contraction
%N 6
%P 1363--1380
%T Persistence of large mammal faunas as indicators of global human impacts
%U http://dx.doi.org/10.1644%2F06-MAMM-A-124R2.1
%V 88
%X Large mammals often play critical roles within ecosystems by affecting
either prey populations or the structure and species composition
of surrounding vegetation. However, large mammals are highly vulnerable
to extirpation by humans and consequently, severe contractions of
species ranges result in intact large mammal faunas becoming increasingly
rare. We compared historical (AD 1500) range maps of large mammals
with their current distributions to determine which areas today retain
complete assemblages of large mammals. We estimate that less than
21% of the earth's terrestrial surface still contains all
of the large (>20 kg) mammals it once held, with the proportion
varying between 68% in Australasia to only 1% in Indomalaya.
Although the presence of large mammals offers no guarantee of the
presence of all smaller animals, their absence represents an ecologically
based measurement of human impacts on biodiversity. Given the ecological
importance of large mammals and their vulnerability to extinction,
better protection and extension of sites containing complete assemblages
of large mammals is urgently needed.
@article{Morrison2007,
abstract = {Large mammals often play critical roles within ecosystems by affecting
either prey populations or the structure and species composition
of surrounding vegetation. However, large mammals are highly vulnerable
to extirpation by humans and consequently, severe contractions of
species ranges result in intact large mammal faunas becoming increasingly
rare. We compared historical (AD 1500) range maps of large mammals
with their current distributions to determine which areas today retain
complete assemblages of large mammals. We estimate that less than
21% of the earth's terrestrial surface still contains all
of the large (>20 kg) mammals it once held, with the proportion
varying between 68% in Australasia to only 1% in Indomalaya.
Although the presence of large mammals offers no guarantee of the
presence of all smaller animals, their absence represents an ecologically
based measurement of human impacts on biodiversity. Given the ecological
importance of large mammals and their vulnerability to extinction,
better protection and extension of sites containing complete assemblages
of large mammals is urgently needed.},
added-at = {2008-05-27T14:49:46.000+0200},
author = {Morrison, John C. and Sechrest, Wes and Dinerstein, Eric and Wilcove, David S. and Lamoreux, John F.},
biburl = {https://www.bibsonomy.org/bibtex/2441d40344248a0e50d796ccdcfa70940/karinnadrowski},
date = {December 01, 2007},
description = {Presence or absence of large mammals as an indicator for human impact.},
file = {Morrison2007.pdf:Morrison2007.pdf:PDF},
interhash = {ebce5bbdd581841c41ac447e0ba82541},
intrahash = {441d40344248a0e50d796ccdcfa70940},
journal = {Journal of Mammalogy},
keywords = {global historic_range human_impact large_mammals range_contraction},
number = 6,
owner = {kej},
pages = {1363--1380},
timestamp = {2008-08-06T16:50:20.000+0200},
title = {Persistence of large mammal faunas as indicators of global human impacts},
url = {http://dx.doi.org/10.1644%2F06-MAMM-A-124R2.1},
volume = 88,
year = 2007
}