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Changes in soil macroarthropod communities in relation to forest maturation through three successional stages in the Canadian boreal forest 总被引:2,自引:0,他引:2
The edaphic macroarthropod communities of three sites representative of the forest succession in the Lake Duparquet region
(situated in the southern part of the boreal forest, Abitibi, Quebec, Canada) were studied. A 47-year-old deciduous forest,
a 144-year-old mixed forest, and a 231-year-old coniferous forest form a successional forest gradient with a vegetation composition
that is a function of the time elapsed since the last forest fire. Along with forest succession, there is a reduction in macroarthropod
community biodiversity. There is a negative gradient for mean total abundance (237–41 individuals), total richness (63–23
species), density (1792–661 individuals/m2), diversity (H′ = 1.478–1.007) and equitability (J = 0.821–0.739). These community changes affect saprophagous organisms more than predators. Certain species or taxa show preferences
for a particular forest type, such as larval Diptera for the deciduous forest. A comparison of these results with the literature
suggests an inverse preference as to habitat choice between microarthropods (Acarina and Collembola) and macroarthropods.
From a conservation point of view, macroarthropod biodiversity will be favored by the protection of all forest types since
each environment possesses a particular community structure and species.
Received: 17 April 1995 / Accepted: 1 April 1996 相似文献
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