Lack of energetic equivalence in forest soil invertebrates

摘要: Ecological communities consist of small abundant and large non-abundant species. The energetic equivalence rule is an often-observed pattern that could be explained by equal energy usage among organisms organisms. To generate this pattern, metabolism (as indicator individual use) abundance have to scale inversely with body mass, cancel each other out. In contrast, the referred as biomass states all species in area should constant across body-mass range. study, we investigated forest soil respect metabolism, abundance, population use, biomass. We focused on four land-use types three different landscape blocks (Biodiversity Exploratories). samples contained 870 12 phylogenetic groups. Our results indicated positive sublinear metabolic scaling negative mass. relationships varied mainly due differences groups or feeding types, only marginally type. However, these were not exactly inverse other, resulting increasing use mass for most combinations group type Thus, our are mostly inconsistent classic perception equivalence, reject hypothesis while documenting a specific nonrandom how distributed size classes. patterns consistent two alternative predictions: resource-thinning hypothesis, which decreases trophic level, allometric degree increase average correlations number links consumers resources. Overall, suggest synthesis food web structures theory may promising predicting natural biomass, use.