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Responses of Seed-Dispersing Birds to Amount of Rainforest in the Landscape around Fragments
by
MORAN, CATH
, CATTERALL, CARLA P.
in
Animal, plant and microbial ecology
/ Animals
/ Applied ecology
/ Aves
/ Biodiversity
/ Biological and medical sciences
/ Birds
/ Birds - physiology
/ cobertura de bosque
/ conectividad funcional
/ Conservation biology
/ Conservation of Natural Resources
/ Conservation, protection and management of environment and wildlife
/ Contributed Papers
/ dispersión de semillas
/ Ecosystem
/ Environment
/ Forest conservation
/ Forest cover
/ Forest regeneration
/ Forestry
/ frugivore
/ frugívoro
/ fruit
/ fruta
/ functional connectivity
/ functional properties
/ Fundamental and applied biological sciences. Psychology
/ General aspects
/ General forest ecology
/ Generalities. Production, biomass. Quality of wood and forest products. General forest ecology
/ habitat destruction
/ Habitat fragmentation
/ Habitat loss
/ habitats
/ Landscape
/ Landscape ecology
/ Parks, reserves, wildlife conservation. Endangered species: population survey and restocking
/ patch size
/ physiology
/ Plants
/ Population Density
/ Queensland
/ Rain forests
/ Rainforests
/ Seed Dispersal
/ Seeds
/ Species composition
/ Species diversity
/ surveys
/ tamaño de fragmento
/ Tropical rain forests
/ Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution
2014
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Responses of Seed-Dispersing Birds to Amount of Rainforest in the Landscape around Fragments
by
MORAN, CATH
, CATTERALL, CARLA P.
in
Animal, plant and microbial ecology
/ Animals
/ Applied ecology
/ Aves
/ Biodiversity
/ Biological and medical sciences
/ Birds
/ Birds - physiology
/ cobertura de bosque
/ conectividad funcional
/ Conservation biology
/ Conservation of Natural Resources
/ Conservation, protection and management of environment and wildlife
/ Contributed Papers
/ dispersión de semillas
/ Ecosystem
/ Environment
/ Forest conservation
/ Forest cover
/ Forest regeneration
/ Forestry
/ frugivore
/ frugívoro
/ fruit
/ fruta
/ functional connectivity
/ functional properties
/ Fundamental and applied biological sciences. Psychology
/ General aspects
/ General forest ecology
/ Generalities. Production, biomass. Quality of wood and forest products. General forest ecology
/ habitat destruction
/ Habitat fragmentation
/ Habitat loss
/ habitats
/ Landscape
/ Landscape ecology
/ Parks, reserves, wildlife conservation. Endangered species: population survey and restocking
/ patch size
/ physiology
/ Plants
/ Population Density
/ Queensland
/ Rain forests
/ Rainforests
/ Seed Dispersal
/ Seeds
/ Species composition
/ Species diversity
/ surveys
/ tamaño de fragmento
/ Tropical rain forests
/ Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution
2014
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Responses of Seed-Dispersing Birds to Amount of Rainforest in the Landscape around Fragments
by
MORAN, CATH
, CATTERALL, CARLA P.
in
Animal, plant and microbial ecology
/ Animals
/ Applied ecology
/ Aves
/ Biodiversity
/ Biological and medical sciences
/ Birds
/ Birds - physiology
/ cobertura de bosque
/ conectividad funcional
/ Conservation biology
/ Conservation of Natural Resources
/ Conservation, protection and management of environment and wildlife
/ Contributed Papers
/ dispersión de semillas
/ Ecosystem
/ Environment
/ Forest conservation
/ Forest cover
/ Forest regeneration
/ Forestry
/ frugivore
/ frugívoro
/ fruit
/ fruta
/ functional connectivity
/ functional properties
/ Fundamental and applied biological sciences. Psychology
/ General aspects
/ General forest ecology
/ Generalities. Production, biomass. Quality of wood and forest products. General forest ecology
/ habitat destruction
/ Habitat fragmentation
/ Habitat loss
/ habitats
/ Landscape
/ Landscape ecology
/ Parks, reserves, wildlife conservation. Endangered species: population survey and restocking
/ patch size
/ physiology
/ Plants
/ Population Density
/ Queensland
/ Rain forests
/ Rainforests
/ Seed Dispersal
/ Seeds
/ Species composition
/ Species diversity
/ surveys
/ tamaño de fragmento
/ Tropical rain forests
/ Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution
2014
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Responses of Seed-Dispersing Birds to Amount of Rainforest in the Landscape around Fragments
Journal Article
Responses of Seed-Dispersing Birds to Amount of Rainforest in the Landscape around Fragments
2014
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Overview
Habitat loss and fragmentation alter the composition of bird assemblages in rainforest. Because birds are major seed dispersers in rainforests, fragmentation-induced changes to frugivorous bird assemblages are also likely to alter the ecological processes of seed dispersal and forest regeneration, but the specific nature of these changes is poorly understood. We assessed the influence of fragment size and landscape forest cover on the abundance, species composition, and functional properties of the avian seed disperser community in an extensively cleared, former rainforest landscape of subtropical Australia. Bird surveys of fixed time and area in 25 rainforest fragments (1-139 ha in size across a 1800 km2 region) provided bird assemblage data which were coupled with prior knowledge of bird species' particular roles in seed dispersal to give measurements of seven different attributes of the seed disperser assemblage. We used multimodel regression to assess how patch size and surrounding forest cover (within 200 m, 1000 m, and 5000 m radii) influenced variation in the abundance of individual bird species and of functional groups based on bird species' responses to fragmentation and their roles in seed dispersal. Surrounding forest cover, specifically rainforest cover, generally had a greater effect on frugivorous bird assemblages than fragment size. Amount of rainforest cover within 200 m of fragments was the main factor positively associated with abundances of frugivorous birds that are both fragmentation sensitive and important seed dispersers. Our results suggest a high proportion of local rainforest cover is required for the persistence of seed-dispersing birds and the maintenance of seed dispersal processes. Thus, even small rainforest fragments can function as important parts of habitat networks for seed-dispersing birds, whether or not they are physically connected by vegetation. La pérdida da hábitat y la fragmentación alteran la composición del ensamblaje de aves en la selva. Ya que las aves son el principal dispersor de semillas en las selvas, los cambios inducidos por la fragmentación al ensamblaje de aves frugívoras probablemente también alteren los procesos ecológicos de la dispersión de semillas y la regeneración de bosques, pero la naturaleza específica de estos cambios es entendida pobremente. Estudiamos la influencia del tamaño de fragmento y la cobertura de bosque en el paisaje sobre la abundancia, la composición de especies y las propiedades funcionales de la comunidad de especies de aves dispersoras de semillas en un paisaje despejado extensivamente y previamente de selva en Australia subtropical. Los censos de aves en un tiempo y área fijos en 25 fragmentos de selva (1 - 139 ha de tamaño a lo largo de una región de 1 800 Km2) proporcionaron datos de ensamblaje de aves que se parearon con el conocimiento previo de los papeles particulares de las especies de aves en la dispersión de semillas para dar medidas de siete atributos diferentes del ensamblaje del dispersor de semillas. Usamos una regresión multi-modelo para estudiar cómo el tamaño de fragmento y la cobertura de bosque próxima (dentro de 200 m, 1000 m y 5000 m de radio) influyeron en la variación de la abundancia de especies individuales de aves y de los grupos funcionales basados en las respuestas de las especies de aves a la fragmentación y su papel en la dispersión de semillas. La cobertura forestal próxima, específicamente la cobertura de selva, en general tuvo un mayor efecto sobre el ensamblaje de aves frugívoras que el tamaño del fragmento. El incremento de la cobertura de selva dentro de los 200 m de fragmentos fue el factor principal asociado positivamente con las abundancias de aves frugívoras que son sensibles a la fragmentación y dispersores importantes de semillas. Nuestros resultados sugieren que se requiere una alta proporción de cobertura local de selva para la persistencia de aves dispersoras y el mantenimineto del proceso de dispersión de semillas. Así, hasta el más mínimo fragmento de selva puede funcionar como parte importante de una red de hábitats para aves dispersoras, estén o no conectadas físicamente por la vegetación.
Publisher
Blackwell Publishing Ltd,Wiley Periodicals Inc,Wiley-Blackwell
Subject
Animal, plant and microbial ecology
/ Animals
/ Aves
/ Biological and medical sciences
/ Birds
/ Conservation of Natural Resources
/ Conservation, protection and management of environment and wildlife
/ Forestry
/ fruit
/ fruta
/ Fundamental and applied biological sciences. Psychology
/ Generalities. Production, biomass. Quality of wood and forest products. General forest ecology
/ habitats
/ Parks, reserves, wildlife conservation. Endangered species: population survey and restocking
/ Plants
/ Seeds
/ surveys
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