Avian Persistence in Fragmented Rainforest

Lens, Luc; Dongen, Stefan Van; Norris, Ken; Githiru, Mwangi; Matthysen, Erik

doi:10.1126/science.1075664

Cited by 186 publications

(200 citation statements)

References 16 publications

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“…6) provided by corridors (7)(8)(9)(10), but this has been difficult to achieve for small species, like birds, that move at landscape scales (6). More specific movement information from free-ranging animals is especially important for forest specialists, particularly understory insectivores, because this group appears to be most sensitive to the isolation effects of fragmentation (4,11,12). Both forested corridors and fencerows of individual, living trees have been promoted as landscape elements to facilitate the movement of birds and other forest dependent animals (11,13), but no studies of birds have directly measured movement in these habitats.…”

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Riparian corridors enhance movement of a forest specialist bird in fragmented tropical forest

Gillies

Clair

2008

Proc. Natl. Acad. Sci. U.S.A.

157

116

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Riparian corridors and fencerows are hypothesized to increase the persistence of forest animals in fragmented landscapes by facilitating movement among suitable habitat patches. This function may be critically important for forest birds, which have declined dramatically in fragmented habitats. Unfortunately, direct evidence of corridor use has been difficult to collect at landscape scales and this limits support for corridors in conservation planning. Using telemetry and handheld GPS units, we examined the movement of forest birds by translocating territorial individuals of barred antshrikes (Thamnophilus doliatus; a forest specialist) and rufous-naped wrens (Campylorhynchus rufinucha; a forest generalist) 0.7-1.9 km from their territories in the highly fragmented tropical dry forest of Costa Rica. In each translocation, the directly intervening habitat comprised 1 of 3 treatments: forested riparian corridor, linear living fencerow, or open pasture. Antshrikes returned faster and with greater success in riparian corridors relative to pasture treatments. This species also traveled more directly in riparian corridor treatments, detoured to use forested routes in the other 2 treatments, and did not use fencerows even when they led directly to their home territories. By contrast, wrens were more likely to use fencerows when returning, and return time and success were equivalent among the 3 treatments. Both species crossed fewer gaps in tree cover during riparian corridor treatments than in fencerow or pasture treatments. We conclude that antshrikes, which may be representative of other forest specialists, use forested corridors for movement in this landscape and that fencerows are avoided as movement conduits.animal movement ͉ Campylorhynchus rufinucha ͉ habitat connectivity ͉ hedgerows ͉ Thamnophilus doliatus

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confidence: 99%

“…2), corridors have been widely advocated as a means to maintain biodiversity and ecological processes in fragmented landscapes (3,4). Several studies have demonstrated that target organisms occur in corridors (5), providing indirect evidence that they facilitate movement.…”

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confidence: 99%

Riparian corridors enhance movement of a forest specialist bird in fragmented tropical forest

Gillies

Clair

2008

Proc. Natl. Acad. Sci. U.S.A.

157

116

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“…The highest distance between two forest patches was 920 meters ( Table 2), so that might be the reason why significant difference statistically was not found. Also the species has high mobility and the corridors observed in this study make it likely to survive in fragmented landscapes with low isolation distance (Lens et al, 2002;Thomas, 2000). Their densities decreased with an increase in isolation distance (Figure 2).…”

Section: Discussionmentioning

confidence: 90%

“…Lens et al (2002) found that bird occupancy in a forest patch increased with mobility and the tolerance to deterioration of the habitat.…”

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confidence: 99%

The effects of forest land use and fragmentation on White-throated Mountain Babblers <i>Kupeornis gilberti</i> a globally threatened bird species on the Obudu Plateau, southeast Nigeria

Danjuma¹,

Mwansat²,

Manu³

2014

Ethiop. J. Env Stud & Manag

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“…There are discoveries made on biological diversity for small mammals [4][5][6][7], larger mammals such as primates [8], carnivores [9], invertebrates [10], reptiles and amphibians [11], and birds [12][13][14]. The literature also indicates rich diversity of plants like angiosperms [15,16].…”

Section: Introductionmentioning

confidence: 99%

Ecological Biogeography of West Usambara Mountains: A Study on the Influence of Abiotic Factors to Spatial Distribution of Plant and Animal Species

Meliyo¹,

Masuki²,

Msanya³

et al. 2018

Pure and Applied Biogeography

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West Usambara Mountains, Tanzania are famous for rich biodiversity and endemic species of plants and animals. Although there have been extensive studies on plant and animals species, litle atention has been given on abiotic factors inluencing their spatial distribution. Given rampant degradation of vegetation and associated consequence on biodiversity, knowledge on abiotic factors inluencing distribution of species along the landscape become pertinent for conservation. A study was carried out to explore abiotic factors impacting plant and animals species distribution. Soil, landform and land use/ cover were studied using grids of 20 m × 20 m using FAO Guidelines for Soil Proile and Habitat Descriptions. Soils were described, sampled for laboratory analysis. Spatial distribution of plant species were determined in the grids, and along the transects, every time estimating the percent cover and describing the habitat. Distribution of animal species was studied using both small mammals and rodent burrows as proxies. Trapping was done using diferent traps sizes, checking daily for animal caught, counting and retrapping. Rodent burrows were estimated in same grids by examining a width of 0.5 m from end to end of grid and total number of burrows recorded. Determination of species distribution was done using GLM regression. Results show that species are inluenced by elevation, which was common to both plants and animals. Topsoil soil depth was positive to plant species whereas hillshade, surface stones, cultivation and atmospheric temperature were negatively inluencing plant species. Rock outcrops, surface stones and cultivation were positively inluencing small mammals distribution. It is concluded that factors inluencing distribution of small mammals are elevation, surface stones, rock outcrop and cultivation. Factors inluencing plant species are elevation soil depth whereas cultivation, hillshade, surface stone and rock out crops negatively impact distribution. For conservation, it is recommended that the best steps are to stop human activities leading to depletion of plant species and accelerating soil erosion and allow for self-regeneration. Control of soil erosion strongly recommended as way of plant species re-establishment.

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Avian Persistence in Fragmented Rainforest

Cited by 186 publications

References 16 publications

Riparian corridors enhance movement of a forest specialist bird in fragmented tropical forest

Riparian corridors enhance movement of a forest specialist bird in fragmented tropical forest

The effects of forest land use and fragmentation on White-throated Mountain Babblers <i>Kupeornis gilberti</i> a globally threatened bird species on the Obudu Plateau, southeast Nigeria

Ecological Biogeography of West Usambara Mountains: A Study on the Influence of Abiotic Factors to Spatial Distribution of Plant and Animal Species

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