Habitat loss and fragmentation influence species distributions and therefore ecological processes that depend upon them. Pollination may be particularly susceptible to fragmentation, as it depends on frequent pollinator movement. Unfortunately, most pollinators are too small to track efficiently which has precluded testing the hypothesis that habitat fragmentation reduces or eliminates pollen f...

Transport corridors are receiving a growing level of attention, particularly with the surge of containerized maritime freight and the setting of more efficient time and costwise freight distribution systems. Global commodity chains, with a strong Pacific Asian component and controlled by large modal and intermodal freight operators, have become an operational reality. Particularly, the role of ...

The development of Green Transport Corridors (GTCs) is an important strategy to help a region achieve more sustainable solutions. When such GTCs are implemented, multimodal supply chains and environmentally-friendly alternatives for freight transportation through economically relevant hubs long-distance routes can be facilitated. Based on previous efforts evaluating single routes, this paper ai...

Planning corridors among obstacles has arisen as a central problem in game design. Instead of devising a one-dimensional motion path for a moving entity, it is possible to let it move in a corridor, where the exact motion path is determined by a local planner. In this paper we introduce a measure for the quality of such corridors. We analyze the structure of optimal corridors amidst point obsta...

10.1083/jcb.1733r r 1jcb.1733r r1Nicole Le Brasseurlebrasn@roc kefeller. eduMigrating interphase DNA C hien-Hui Chuang (University of Illinois, Urbana, IL) sees chromosomes moving long distances—and not during mitosis. Chuang, Andrew Belmont, and colleagues, now unveil the inducible long-range migration of an interphase chromosome site. An hour or two ...

Corridors are frequently proposed to connect patches of habitat that have become isolated due to human-mediated alterations to the landscape. While it is understood that corridors can facilitate dispersal between patches, it remains unknown whether corridors can mitigate the negative genetic effects for entire communities modified by habitat fragmentation. These negative genetic effects, which ...

Habitat fragmentation is a severe threat to tropical biotas, but its long-term effects are poorly understood. We evaluated longer-term changes in the abundance of larger (>1 kg) mammals in fragmented and intact rainforest and in riparian "corridors" in tropical Queensland, with data from 190 spotlighting surveys conducted in 1986-1987 and 2006-2007. In 1986-1987 when most fragments were already...

Habitat corridors, a common management strategy for increasing connectivity in fragmented landscapes, have experimentally validated positive influences on species movement and diversity. However, long-standing concerns that corridors could negatively impact native species by spreading antagonists, such as disease, remain largely untested. Using a large-scale, replicated experiment, we evaluated...

A s wildlands give way to an expanding human footprint, scientists and land managers have struggled to develop land conservation strategies that protect biodiversity. A favored strategy is to connect large habitat areas with landscape corridors (1–3). Yet, the scientific question remains: Do corridors actually work to promote dispersal and conserve biodiversity? In this issue of PNAS, Gillies a...