Corridors for Conservation: Integrating Pattern and Process

Chetkiewicz, Cheryl‐Lesley B.; Boyce, Mark S.

doi:10.1146/annurev.ecolsys.37.091305.110050

Cited by 337 publications

(268 citation statements)

References 152 publications

(132 reference statements)

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“…Terrestrial insectivores in particular seem to be sensitive to fragmentation (12,30) partly because they are unwilling to cross forest gaps (12,(31)(32)(33). This covariance would be expected if animals select travel routes with the same criteria they use to select habitat for foraging and other activities (34). In our study, the reluctance of antshrikes to cross gaps and avoidance of fencerows could both result from habitat selection for dense forest understory.…”

Section: Discussionmentioning

confidence: 65%

“…Ultimately, corridors appear to promote higher species richness (48, 49), support greater population persistence (2) and reduce changes to community structure (50) in fragmented landscapes. Although these inferential studies are important, we amplify caution that detailed information about movement behavior is critical in the study of corridors (5,34). Our conclusions would have been quite different if we had tested only the forest generalist wren or lacked the detailed route information.…”

Section: Discussionmentioning

confidence: 80%

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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.

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156

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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Section: Discussionmentioning

confidence: 65%

Section: Discussionmentioning

confidence: 80%

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

Gillies

Clair

2008

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

Self Cite

156

116

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“…A sustentabilidade do ambiente urbano depende da manutenção dos processos ecológicos, que podem ser potencializados pela presença de elementos na paisagem que aumentem a conectividade funcional entre os remanescentes maiores de vegetação natural, como corredores ou trampolins ecológicos (CHETKIEWICZ et al, 2006;LUSSIER et al, 2006;CASTÉLON;SIEVING, 2007;ALBERTI, 2010;ZHOU et al, 2011), e esse pode ser o papel das Áreas de Preservação Permanente (APP) (METZGER, 2010). As APP, além de protegerem áreas fisicamente sensíveis e contribuírem para a manutenção da qualidade da água, exercem grande importância para a permanência e deslocamento da fauna e flora local.…”

Section: Introductionunclassified

Cenários ambientais para o ordenamento territorial de áreas de preservação permanente no município de Sorocaba, SP

Mello

Petri²,

Leite

et al. 2014

Rev. Árvore

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Este estudo objetivou analisar a importância das Áreas de Preservação Permanente (APP) para a manutenção dos remanescentes florestais no município de Sorocaba, SP. O mapa desses remanescentes foi elaborado com base em fotografias aéreas de 2006, e mapas de hidrografia e de declividade foram usados para determinação das APP. Compararam-se dois cenários: real (mata atual) e ideal (mata atual acrescida da restauração das APP), com base em métricas da paisagem. Os resultados indicaram que 19% do município se enquadra como APP e, dessa área, apenas 45% possui cobertura florestal. As APP preservadas representam 50% do total de cobertura florestal da paisagem. A restauração das APP representaria aumento de 16,68% para 28% de cobertura florestal da paisagem e possibilitaria o surgimento de fragmentos maiores que 3.000 ha, enquanto no cenário real os maiores fragmentos atingem 300 ha. Os remanescentes florestais se apresentaram intimamente ligados às APP: margens de rios, áreas alagáveis e encostas, onde a ocupação urbana foi dificultada e existe o instrumento legal de proteção. Esse quadro evidencia que as APP possuem papel fundamental na conservação florestal em um município bastante urbanizado, onde as áreas naturais sofrem muita pressão. A avaliação dos cenários mostrou que a incorporação dos dispositivos legais no planejamento e ordenamento territorial subsidia as estratégias voltadas para a manutenção de hábitats naturais e, consequentemente, a diminuição dos efeitos negativos sobre a biodiversidade. Entretanto, as mudanças recentes no Código Florestal podem representar um retrocesso no cenário ambiental nacional diante da crescente urbanização.

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“…We assume that habitat types that are avoided provide greater resistance to movement (Chetkiewicz et al 2006;McRae et al 2008). While our objective was to determine the likelihood of connectivity between known elephant populations in southern Africa, our approach could also help managers enhance or promote potential corridors for other species.…”

Section: Introductionmentioning

confidence: 99%

Functional connectivity within conservation networks: Delineating corridors for African elephants

Roever

Aarde

Leggett

2013

Biological Conservation

104

100

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Managing multiple parks, reserves, and conservation areas collectively as conservation networks is a recent, yet growing trend. But in order for these networks to be ecologically viable, the functional connectivity of the landscape must be ensured. We assessed the connectivity between six African savanna elephant populations in southern Africa to test whether existing conservation networks were functioning and to identify other areas that could benefit from being managed as conservation networks. We used resource selection function models to create an index of habitat selection by males and female elephants. We employed this habitat use index as a resistance surface, and applied circuit theory to assess connectivity between adjacent elephant populations within six clusters of protected areas across southern Africa. Circuit theory current flow maps predicted a high likelihood of connectivity in the central portion of our study area (i.e. between the Chobe, Kafue, Luangwa, and Zambezi cluster). Main factors limiting connectivity across the study area were high human density in the east and a lack of surface water in the west. These factors effectively isolate elephants in the Etosha cluster in Namibia and Niassa clusters in Mozambique from the central region. Our models further identified two clusters where elephants might benefit from being managed as part of a conservation network, 1) northern Zambia and Malawi and 2) northern Mozambique.We conclude that using habitat selection and circuit theory models to identify conservation networks is a data-based method that can be applied to other focal species to identify and conserve functional connectivity.

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Corridors for Conservation: Integrating Pattern and Process

Cited by 337 publications

References 152 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

Cenários ambientais para o ordenamento territorial de áreas de preservação permanente no município de Sorocaba, SP

Functional connectivity within conservation networks: Delineating corridors for African elephants

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