Forest fragments and their tree canopies may act as important reservoirs for biodiversity, but their role in supporting diversity is poorly understood in the context of their spatial arrangement. We examine the influence of landscape configuration and location within forest patches (e.g. canopy, edge or patch interior) on patterns of arthropod biodiversity associated with sugar maple trees across an agricultural landscape in southern Quebec (Canada). We sampled arthropods from sugar maples in 20 sugar maple-beech-dominated forest patches that varied in size and isolation from other forest patches. Within each patch, arthropods were collected in the interior, edge and canopy of patches over two seasons. Size and isolation of forest patches did not affect arthropod family or functional group diversity, but patch canopies supported a higher diversity than understories. Both configuration and within-patch location affected taxonomic and functional composition of arthropods. For example, phytophages and saprophages were found in greatest abundance in canopies and large patches, while entomophages were in highest abundance in interiors. We conclude that even in relatively small (e.g. 5–10 ha) forest patches, canopies are providing critical reservoirs for arthropod diversity, and draw our attention to the conservation value of small patches in fragmented forest landscapes.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 23 • No. 1–2