Notes on Cynipid Galls, Ground Beetles and Ground-dwelling Spiders Collected at Fort Severn, Ontario

Diversity of Tropical Spiders - Ground-dwelling Species of Brazilian Savannas

Spiders are one of the biggest and most diverse groups of arthropods. There are around 40000 described species of spiders, belonging to more than 100 families and 3600 genera. However, 170000 species of these arachnids are estimated to exist in the world, which reflects the scantiness of studies about this group. The distribution and diversity of spiders in macro and micro-scale in the tropics ...

Influence of public road proximity on ground-dwelling insect communities

Ecological studies on road’s impact on wildlife have concentrated on vertebrates although less is known of their effects on invertebrates. The current study presents public road influences on species richness, abundance, and diversity of ground dwelling insects in Arusha National Park in Tanzania. Values from pitfall traps data were generally higher in core habitat than road verge. Nine species...

Relationship Between Ground Settlement Due to Tunnelling and Ground Physico-mechanical Peroperties (RESEARCH NOTES)

Edge effects created by wildfire and clear-cutting on boreal forest ground-dwelling spiders

The response of ground-dwelling spider assemblages to edges created by wildfire was compared to their response to clear-cut edges in black spruce forests in eastern Canada. For each disturbance six edge transects 100 m long were established. Spiders were collected with pitfall traps 10 m apart from 50 m inside the disturbances to 50 m in the forest interior. Measurements of the forest floor str...

Ground spiders overwhelm victims with supersticky silk.

Most spiders are content to sit and wait for unsuspecting victims to blunder into their silken traps, but webs are only ever as good as the structures that secure them to the surfaces that support them. ‘This [attachment] is done with a special type of silk, called piriform’, says Jonas Wolff, from Macquarie University, Australia, adding that most spiders only produce this silk when they need t...