Habitat preferences of the forest birds on the island of Príncipe, Gulf of Guinea

Dallimer, Martin; King, Tony

doi:10.1111/j.1365-2028.2007.00891.x

Cited by 18 publications

(19 citation statements)

References 17 publications

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“…30 to the actual survey time was used to locate cryptic individuals and to allow birds to recover from disturbance by the arrival of the observers. Habitat structure data At each count station, local vegetation structure was characterized using protocols adapted from several sources [39,50]. Tree basal area (m²/ha) was obtained using a relascope, and within a radius of 10 m, the diameter at breast height (DBH) of the nearest 10 trees from the count station was measured using a tape measure.…”

Section: Survey Design and Bird Censusmentioning

confidence: 99%

Bird Assemblages in a Malagasy Forest-Agricultural Frontier: Effects of Habitat Structure and Forest Cover

Rocha

Virtanen

Cabeza

2015

Tropical Conservation Science

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Increasing global human population and per-capita food consumption are expected to exacerbate the already massive agricultural footprint in tropical ecosystems. Madagascar is home to exceptional levels of biodiversity and is in the midst of severe land-use change, mostly driven by slash-and-burn, smallholder agriculture. Understanding the consequences of these agricultural practices for Malagasy native species is therefore of the foremost importance for the conservation of the nation's biodiversity. We surveyed bird assemblages inside and surrounding Ranomafana National Park, southeastern Madagascar, obtaining nearly 1,000 records of more than 60 species. At each study point, habitat structure was characterized by its vegetation complexity, and forest cover was quantified within circles of radii of 100, 500 and 750 m. We found that species richness was higher in forest than in agricultural areas, and responses to land-use change were found to be guildspecific, with frugivores being especially depleted outside forest areas, whereas granivores had higher species richness in the agricultural matrix. The number of recorded species with forest affinities was highly associated with landscape-scale forest cover, while open area and generalist species responded mainly to site-scale habitat structure. Our results demonstrate a turnover from forest-associated species to open area and habitat generalist species in Madagascar's smallholder agricultural areas. Our study underscores the conservation value of landscape-scale forest cover and of site-scale vegetation complexity. A double-stranded conservation approach, in which both landscape-scale forest cover and vegetation complexity are preserved would benefit conservation of the island's forest avifauna.

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Section: Survey Design and Bird Censusmentioning

confidence: 99%

Bird Assemblages in a Malagasy Forest-Agricultural Frontier: Effects of Habitat Structure and Forest Cover

Rocha

Virtanen

Cabeza

2015

Tropical Conservation Science

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“…Conversely, many studies aimed to assess ‘Human influence on biodiversity & landscapes' ( n = 71; 17.6%), depicting an overall negative effect of human activities on biodiversity, both inside and outside PAs (Figure c). The intensification of land use, the fragmentation of natural landscapes through the expansion of infrastructure, as well as logging and deforestation activities were found to be particularly detrimental to biodiversity (e.g., Armenteras, Rodríguez, & Retana, ; Botha, Witkowski, & Shackleton, ; Dallimer & King, ; Thorn, Bässler, Svoboda, & Müller, ). In contrast, the influence of agropastoral activities on biodiversity was found to be more variable according to the context and systems considered (e.g., Leigh, Smart, & Gill, ; Mworia, Kinyamario, & Githaiga, ; Petracca et al, ).…”

Section: Resultsmentioning

confidence: 99%

Interface processes between protected and unprotected areas: A global review and ways forward

Blanco

Bellón

Fabricius

et al. 2019

Global Change Biology

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Land‐use changes and the expansion of protected areas (PAs) have amplified the interaction between protected and unprotected areas worldwide. In this context, ‘interface processes' (human–nature and cross‐boundary interactions inside and around PAs) have become central to issues around the conservation of biodiversity and ecosystem services. This scientific literature review aimed to explore current knowledge and research gaps on interface processes regarding terrestrial PAs. At first, 3,515 references related to the topic were extracted through a standardized search on the Web of Science and analyzed with scientometric techniques. Next, a full‐text analysis was conducted on a sample of 240 research papers. A keyword analysis revealed a wide diversity of research topics, from ‘pure' ecology to sociopolitical research. We found a bias in the geographical distribution of research, with half the papers focusing on eight countries. Additionally, we found that the spatial extent of cross‐boundary interactions was rarely assessed, preventing any clear delimitation of PA interactive zones. In the 240 research papers we scanned, we identified 403 processes that were studied. The ecological effects of PAs were well documented and appeared to be positive overall. In contrast, the effects of PAs on local communities were understudied and, according to the literature focusing on these, were very variable according to local contexts. Our findings highlight key research advances on interface processes, especially regarding the ecological outcomes of PAs, the influence of human activities on biodiversity, and PA governance issues. In contrast, main knowledge gaps concern the spatial extent of interactive zones, as well as the interactions between local people and conservation actions and how to promote synergies between them. While the review was limited to terrestrial PAs, its findings allow us to propose research priorities for tackling environmental and socioeconomic challenges in the face of a rapidly changing world.

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“…All 93 quadrats were associated to any Negros Bleeding-heart sightings recorded within 60 m of them (Rivera-Milán et al 2015), as stated in the bird survey methods. At each quadrat, GPS co-ordinates and an altitude reading were taken using a Garmin GPS unit (Garmin eTrex 30x), because altitude can be a major predictor of occurrence in forest bird species (Bibby 2000; Dallimer and King 2007; Paz et al 2013). Tree Diameter at Breast Height (DBH) was measured in three categories: 0 to ≤25 cm (band 1), >25 to ≤50 cm (band 2), and >50 cm (band 3), following other bird-habitat studies (Paz et al 2013; Zarones et al 2013).…”

Section: Methodsmentioning

confidence: 99%

Negros Bleeding-heartGallicolumba keayiprefers dense understorey vegetation and dense canopy cover, and species distribution modelling shows little remaining suitable habitat

Mynott

Kerhoas²,

Kerhoas³

2019

Preprint

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1The Philippines is a global biodiversity hotspot, with a large number of Threatened bird species, 2 one of which is the Critically Endangered Negros Bleeding-heart Gallicolumba keayi. The aim of this 3 study was to investigate the habitat preference of the Negros Bleeding-heart and undertake 4 species distribution modelling to locate areas of conservation importance based on identified 5 suitable habitat. A survey of 94 point counts was undertaken and eight camera traps were 6 deployed from May to August 2018 in the Northwest Panay Peninsula Natural Park, Panay, 7Philippines. Habitat variables (canopy cover, understorey cover, ground cover, altitude, presence of 8 rattan and pandan, tree diameter at breast height and branching architecture) were measured in 9 93 5 m-radius quadrats. To identify areas of potentially suitable habitat for the Negros Bleeding-10 heart, species distribution modelling was undertaken in MaxEnt using tree cover and altitude data 11 on Panay and Negros. Using a Generalised Linear Model, Negros Bleeding-heart presence was 12 found to be significantly positively associated with high understorey cover and dense canopy cover. 13Species distribution modelling showed that the Northwest Panay Peninsula Natural Park is 14 currently the most effectively located protected area for Negros Bleeding-heart conservation, while 15 protected areas in Negros require further protection. It is imperative that protection is continued in 16 the Northwest Panay Peninsula Natural Park, and more survey effort is needed to identify other 17 critical Negros Bleeding-heart populations, around which deforestation and hunting ban 18 enforcement is strongly recommended. 19 20

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Habitat preferences of the forest birds on the island of Príncipe, Gulf of Guinea

Cited by 18 publications

References 17 publications

Bird Assemblages in a Malagasy Forest-Agricultural Frontier: Effects of Habitat Structure and Forest Cover

Bird Assemblages in a Malagasy Forest-Agricultural Frontier: Effects of Habitat Structure and Forest Cover

Interface processes between protected and unprotected areas: A global review and ways forward

Negros Bleeding-heartGallicolumba keayiprefers dense understorey vegetation and dense canopy cover, and species distribution modelling shows little remaining suitable habitat

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