Biodiversity-productivity relations: an experimental evaluation of mechanisms

被引:38
作者
Hall, SJ [1 ]
Gray, SA [1 ]
Hammett, ZL [1 ]
机构
[1] Flinders Univ S Australia, Sch Biol Sci, Adelaide, SA 5001, Australia
基金
澳大利亚研究理事会;
关键词
resource heterogeneity; nutrient enrichment; community assembly; marine benthos;
D O I
10.1007/s004420050978
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 [生物信息与计算生物学]; 0713 [生态学];
摘要
To examine the mechanisms underlying productivity-diversity relationships, we manipulated nutrient levels in replicate small-scale artificial habitat units in the marine subtidal zone and followed the process of community assembly. In contrast to most enrichment studies, algal diversity increased in enriched habitats relative to controls along with biomass - a result that may be explained by the low nutrient status of the region. Both the total number of faunal species and the total number of individuals were also significantly greater in enriched habitats, but the relationship between algal resources and faunal diversity did not support the resource heterogeneity hypothesis.
引用
收藏
页码:545 / 555
页数:11
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