Habitat loss and the structure of plant-animal mutualistic networks

被引:272
作者
Fortuna, MA [1 ]
Bascompte, J [1 ]
机构
[1] CSIC, Integrat Ecol Grp, Estac Biol Donana, E-41080 Seville, Spain
关键词
community structure; complex networks; habitat fragmentation; metacommunity; nestedness; pollination; seed dispersal;
D O I
10.1111/j.1461-0248.2005.00868.x
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Recent papers have described the structure of plant-animal mutualistic networks. However, no study has yet explored the dynamical implications of network structure for the persistence of such mutualistic communities. Here, we develop a patch-model of a whole plant-animal community and explore its persistence. To assess the role of network structure, we build three versions of the model. In the first version, we use the exact network of interactions of two real mutualistic communities. In the other versions, we randomize the observed network of interactions using two different null models. We show that the community response to habitat loss is affected by network structure. Real communities start to decay sooner than random communities, but persist for higher destruction levels. There is a destruction threshold at which the community collapses. Our model is the first attempt to describe the dynamics of whole mutualistic metacommunities interacting in realistic ways.
引用
收藏
页码:278 / 283
页数:6
相关论文
共 33 条
[1]   Error and attack tolerance of complex networks [J].
Albert, R ;
Jeong, H ;
Barabási, AL .
NATURE, 2000, 406 (6794) :378-382
[2]   Spatial dynamics of mutualistic interactions [J].
Amarasekare, P .
JOURNAL OF ANIMAL ECOLOGY, 2004, 73 (01) :128-142
[3]   A PATCH MODEL OF MUTUALISM [J].
ARMSTRONG, RA .
JOURNAL OF THEORETICAL BIOLOGY, 1987, 125 (02) :243-246
[4]   Why do pollination generalist and specialist plant species show similar reproductive susceptibility to habitat fragmentation? [J].
Ashworth, L ;
Aguilar, R ;
Galetto, L ;
Aizen, MA .
JOURNAL OF ECOLOGY, 2004, 92 (04) :717-719
[5]   Effects of habitat destruction in a prey-predator metapopulation model [J].
Bascompte, J ;
Sole, RV .
JOURNAL OF THEORETICAL BIOLOGY, 1998, 195 (03) :383-393
[6]   The nested assembly of plant-animal mutualistic networks [J].
Bascompte, J ;
Jordano, P ;
Melián, CJ ;
Olesen, JM .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2003, 100 (16) :9383-9387
[7]   Habitat fragmentation and extinction thresholds in spatially explicit models [J].
Bascompte, J ;
Sole, RV .
JOURNAL OF ANIMAL ECOLOGY, 1996, 65 (04) :465-473
[9]  
BRONSTEIN JL, 1995, MOSAIC LANDSCAPES EC, P257
[10]   Network structure and biodiversity loss in food webs: robustness increases with connectance [J].
Dunne, JA ;
Williams, RJ ;
Martinez, ND .
ECOLOGY LETTERS, 2002, 5 (04) :558-567