Functional group change within and across scales following invasions and extinctions in the everglades ecosystem

被引:48
作者
Forys, EA
Allen, CR
机构
[1] Eckerd Coll, Environm Studies Discipline, St Petersburg, FL 33711 USA
[2] Clemson Univ, S Carolina Cooperat Fish & Wildlife Res Unit, Biol Resources Div, US Geol Survey, Clemson, SC 29634 USA
关键词
cross-scale resilience; diversity; functional group; ecosystem structure; endangered species; Everglades ecosystem; extinctions; Florida; invasive species; nonnative species;
D O I
10.1007/s10021-001-0078-0
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Cross-scale resilience theory predicts that the combination of functional diversity within scales and functional redundancy across scales is an important attribute of ecosystems because it helps these systems resist minor ecological disruptions and regenerate after major disturbances such as hurricanes and fire. Using the vertebrate fauna of south Florida, we quantified how the loss of native species and invasion by normatives may alter functional group richness within and across scales. We found that despite large changes in species composition due to potential extinctions and successful invasions by normative species, functional group richness will not change significantly within scales, there will not be any significant loss of overall redundancy of ecology function across scales, and overall body mass pattern will not undergo substantial change. However, the types of functions performed will change, and this change may have profound effects on not only the Everglades ecosystem but On the entire landscape of south Florida.
引用
收藏
页码:339 / 347
页数:9
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