Ecological connectivity

discontinuities in an organism's environment causing population fragmentation and ecosystem decay

structures that allow animals to cross human-made barriers safely, typically bridges and tunnels

protected pathway for animals connecting wild territories

type of fish passage

Movement for nature conservation along the corridor of the former Iron Curtain

thumb|The battered remains of a roadkilled White-tailed deer|deer on [[South Carolina Highway 170 by the Chechessee River in South Carolina, US]] thumb|Wide-ranging large carnivores like this [[bear are particularly vulnerable to becoming roadkill.]] Roadkill is a wild animal that has been killed by collision with motor vehicles. Wildlife-vehicle collisions (WVC) have increasingly been the topic of academic research to understand the causes, and how they can be mitigated.

underground hyphal networks that connect individual plants together

model for classifying and describing flowing water

the degree to which the landscape facilitates or impedes movement among resource patches

representation of the biotic interactions in an ecosystem

reduction of a species' abundance to the point that, though still present, it stops interacting with other species

protected Nature Reserve in Puerto Rico