Significant progress has been made in developing subsampling techniques to process large samples of aquatic invertebrates. However, limited information is available regarding subsampling techniques for terrestrial invertebrate samples. Therefore a novel subsampling procedure was evaluated for processing samples of terrestrial invertebrates collected using two common field techniques: pitfall an...

Janzen-Connell effects are negative effects on the survival of a plant's progeny at high conspecific densities or close to its conspecifics. Although the role of Janzen-Connell effects on the maintenance of plant diversity was frequently studied, only few studies targeted Janzen-Connell effects via postdispersal seed predation in temperate grassland systems. We examined effects of conspecific d...

Very little is known about the changes of ground beetle assemblages in the last few decades in the Alps, and different responses to climate change of animal populations living above and below the treeline have not been estimated yet. This study focuses on an altitudinal habitat sequence from subalpine spruce forest to alpine grassland in a low disturbance area of the southeastern Dolomites in I...

plants and arthropods are the main elements of biodiversity in ecosystems. in order to evaluate structural biodiversity of plants and arthropods in natural systems of arid land, a study was carried out in shirvan, mashhad and gonabad, three regions of razavi and northern khorasan provinces, iran. in each region, 10 areas of natural systems selected and sampling was done in these selected areas....

Native and exotic sessile invertebrates can act as habitat modifiers and influence the diversity and composition of associated epifaunal communities. Theory and empirical research predict that greater habitat structural complexity will generally result in higher abundance, richness, and diversity of epifaunal species. We evaluated the impact of a recently introduced, structurally complex bryozo...

Earthworms are known to modify life conditions for other soil organisms through their drilospheric activities. The effects of a large anecic species, Martiodrilus carimaguensis JimeÂnez and Moreno, on soil macrofaunal communities were investigated in a natural and a man-made grassland of the Eastern Plains of Colombia. Invertebrates were sampled by a standard hand sorting method at different sp...