Metapopulation dynamics, abundance, and distribution in a microecosystem

被引:362
作者
Gonzalez, A
Lawton, JH
Gilbert, FS
Blackburn, TM
Evans-Freke, I
机构
[1] Univ London Imperial Coll Sci Technol & Med, NERC, Ctr Populat Biol, Ascot SL5 7PY, Berks, England
[2] Univ Nottingham, Sch Biol Sci, Nottingham NG7 2RD, England
关键词
D O I
10.1126/science.281.5385.2045
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The experimental fragmentation of landscapes of a natural ecosystem resulted in declines in the abundance and distribution of most species in the multispecies animal community inhabiting the landscapes and the extinction of many species. These declines caused the deterioration of the positive interspecific relation between local population abundance and distributional extent in this community. However, when patches were connected by habitat corridors, an immigration "rescue effect" arrested declines in both abundance and distribution and maintained the observed positive relation between them. These results demonstrate the importance of metapopulation dynamics and landscape connectivity for the persistence of populations in fragmented landscapes.
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页码:2045 / 2047
页数:3
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