Interactions between disturbance and dispersal reduce persistence thresholds in a benthic community

被引:35
作者
Lundquist, Carolyn J. [1 ]
Thrush, Simon F. [1 ]
Coco, Giovanni [1 ]
Hewitt, Judi E. [1 ]
机构
[1] Natl Inst Water & Atmospher Res, Hamilton 3251, New Zealand
关键词
Disturbance; Colonization; Dispersal; Connectivity; Landscape; Spatially explicit model; Patch dynamic; Thresholds; Resilience; Persistence; HABITAT STRUCTURE; FOVEAUX STRAIT; TEMPORAL SCALES; SEA-FLOOR; MARINE; POPULATION; DYNAMICS; LANDSCAPES; DIVERSITY; MODEL;
D O I
10.3354/meps08578
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Interactions between the scale of dispersal and the disturbance regime can lead to radical shifts in the ability of organisms to colonize patches and persist within a landscape. We varied the spatial and temporal rates of disturbance and the connectivity between patches in a model of a patch landscape to illustrate thresholds of community persistence for a marine benthic community. We used model parameters representative of a New Zealand marine biogenic-structured community for which recovery after the cessation of disturbance has been observed within similar to 15 yr. Model results suggest functional extinction of these biogenic communities under many disturbance regimes, and homogenization of the landscape to a community dominated by opportunistic species. Dispersal limitation increases in importance for recovery as the disturbance regime strengthens, indicating thresholds in the tolerable disturbance regime based on the dispersal potential of the dominant biogenic species. Limited sensitivity of our model results to different functional forms of the recovery trajectory and colonization neighborhood suggest that these results can be extrapolated to other biogenic structure-dominated communities with recovery rates of a similar order of magnitude. Our results demonstrate that the scale of the disturbance regime and dispersal processes are fundamentally coupled, and knowing the scales of both processes is imperative when predicting change in the structure and diversity of benthic communities threatened by cumulative change.
引用
收藏
页码:217 / 228
页数:12
相关论文
共 92 条
[21]   Rare species, habitat diversity and functional redundancy in marine benthos [J].
Ellingsen, Kari E. ;
Hewitt, Judi E. ;
Thrush, Simon F. .
JOURNAL OF SEA RESEARCH, 2007, 58 (04) :291-301
[22]   Evaluating ecosystem-based management options: Effects of trawling in Torres Strait, Australia [J].
Ellis, Nick ;
Pantus, Francis ;
Welna, Andrzej ;
Butler, Alan .
CONTINENTAL SHELF RESEARCH, 2008, 28 (16) :2324-2338
[23]  
Ellner SP, 2003, ECOLOGY, V84, P882, DOI 10.1890/0012-9658(2003)084[0882:EOSDOM]2.0.CO
[24]  
2
[25]   MODELS AND MECHANISMS OF SUCCESSION - AN EXAMPLE FROM A ROCKY INTERTIDAL COMMUNITY [J].
FARRELL, TM .
ECOLOGICAL MONOGRAPHS, 1991, 61 (01) :95-113
[26]   Clustered disturbances lead to bias in large-scale estimates based on forest sample plots [J].
Fisher, Jeremy I. ;
Hurtt, George C. ;
Thomas, R. Quinn ;
Chambers, Jeffrey Q. .
ECOLOGY LETTERS, 2008, 11 (06) :554-563
[27]   Patchy reaction-diffusion and population abundance: The relative importance of habitat amount and arrangement [J].
Flather, CH ;
Bevers, M .
AMERICAN NATURALIST, 2002, 159 (01) :40-56
[28]   Use of two spatially explicit models to determine the effect of injury geometry on natural resource recovery [J].
Fonseca, MS ;
Whitfield, PE ;
Kenworthy, WJ ;
Colby, DR ;
Julius, BE .
AQUATIC CONSERVATION-MARINE AND FRESHWATER ECOSYSTEMS, 2004, 14 (03) :281-298
[29]  
Friedlander AM, 1999, FISH B-NOAA, V97, P786
[30]  
Grantham BA, 2003, ECOL APPL, V13, pS108