Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Primary forests are irreplaceable for sustaining tropical biodiversity
AU - Gibson, Luke
AU - Lee, Tien Ming
AU - Koh, Lian Pin
AU - Brook, Barry W.
AU - Gardner, Toby A.
AU - Barlow, Jos
AU - Peres, Carlos A.
AU - Bradshaw, Corey J. A.
AU - Laurance, William F.
AU - Lovejoy, Thomas E.
AU - Sodhi, Navjot S.
PY - 2011/10/20
Y1 - 2011/10/20
N2 - Human-driven land-use changes increasingly threaten biodiversity, particularly in tropical forests where both species diversity and human pressures on natural environments are high(1). The rapid conversion of tropical forests for agriculture, timber production and other uses has generated vast, human-dominated landscapes with potentially dire consequences for tropical biodiversity(2-5). Today, few truly undisturbed tropical forests exist, whereas those degraded by repeated logging and fires, as well as secondary and plantation forests, are rapidly expanding(6,7). Here we provide a global assessment of the impact of disturbance and land conversion on biodiversity in tropical forests using a meta-analysis of 138 studies. We analysed 2,220 pairwise comparisons of biodiversity values in primary forests (with little or no human disturbance) and disturbed forests. We found that biodiversity values were substantially lower in degraded forests, but that this varied considerably by geographic region, taxonomic group, ecological metric and disturbance type. Even after partly accounting for confounding colonization and succession effects due to the composition of surrounding habitats, isolation and time since disturbance, we find that most forms of forest degradation have an overwhelmingly detrimental effect on tropical biodiversity. Our results clearly indicate that when it comes to maintaining tropical biodiversity, there is no substitute for primary forests.
AB - Human-driven land-use changes increasingly threaten biodiversity, particularly in tropical forests where both species diversity and human pressures on natural environments are high(1). The rapid conversion of tropical forests for agriculture, timber production and other uses has generated vast, human-dominated landscapes with potentially dire consequences for tropical biodiversity(2-5). Today, few truly undisturbed tropical forests exist, whereas those degraded by repeated logging and fires, as well as secondary and plantation forests, are rapidly expanding(6,7). Here we provide a global assessment of the impact of disturbance and land conversion on biodiversity in tropical forests using a meta-analysis of 138 studies. We analysed 2,220 pairwise comparisons of biodiversity values in primary forests (with little or no human disturbance) and disturbed forests. We found that biodiversity values were substantially lower in degraded forests, but that this varied considerably by geographic region, taxonomic group, ecological metric and disturbance type. Even after partly accounting for confounding colonization and succession effects due to the composition of surrounding habitats, isolation and time since disturbance, we find that most forms of forest degradation have an overwhelmingly detrimental effect on tropical biodiversity. Our results clearly indicate that when it comes to maintaining tropical biodiversity, there is no substitute for primary forests.
KW - HUMAN-MODIFIED WORLD
KW - COUNTRYSIDE BIOGEOGRAPHY
KW - GLOBAL BIODIVERSITY
KW - DEGRADED LANDS
KW - CONSERVATION
KW - OPPORTUNITIES
KW - DISTURBANCE
KW - SCENARIOS
UR - http://www.scopus.com/inward/record.url?scp=80055015145&partnerID=8YFLogxK
U2 - 10.1038/nature10425
DO - 10.1038/nature10425
M3 - Journal article
VL - 478
SP - 378
EP - 381
JO - Nature
JF - Nature
SN - 0028-0836
IS - 7369
ER -