Drivers of extinction risks and shortfalls across terrestrial vertebrates in the Philippine global biodiversity hotspot

Research Square (Research Square), Год журнала: 2025, Номер unknown

Опубликована: Май 9, 2025

The Philippines is a biodiversity hotspot with rich variety of terrestrial vertebrate species, many which are endemic and under threat from environmental changes unsustainable activities. Effective conservation action urgently needed; however, progress hampered by persistent knowledge shortfalls uneven research efforts. In this study, we assessed the extinction risks, threats, gaps 1,258 Philippine species. We found that at least 15%–23% species risk extinction, particularly amphibians mammals, primarily driven habitat loss overexploitation. However, reptiles remain markedly underrepresented in their true status likely underestimated. Our findings highlight historical biases continue to perpetuate inequities, leaving vulnerable data-deficient areas overlooked. Filling these balanced investment, expanded monitoring, better data sharing crucial for informed conservation. recommend using integrative tools remote sensing tackle major Philippines. Integrating collaboration, citizen science, targeted surveys, genetic can address gaps. study offers strategic framework guiding national priorities safeguarding country’s rapidly vanishing wildlife heritage, emphasizing that, without action, risks losing its unique biodiversity.

Язык: Английский

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Automated note annotation after bioacoustic classification: Unsupervised clustering of extracted acoustic features improves detection of a cryptic owl

Ecological Informatics, Год журнала: 2025, Номер unknown, С. 103222 - 103222

Опубликована: Май 1, 2025

Язык: Английский

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Assessing anthropogenic impact on the habitat of threatened rock cavy (Kerodon rupestris) through its alarm calls

PLoS ONE, Год журнала: 2025, Номер 20(5), С. e0323711 - e0323711

Опубликована: Май 30, 2025

Acoustic monitoring is emerging as a key tool in wildlife conservation, especially for species inaccessible habitats like the rock cavy ( Kerodon rupestris ), an endangered native to Brazil’s threatened Caatinga biome. Emotional stress from threatening situations affects breathing, heart rate, and vocal muscle tension, altering acoustic parameters. This allows researchers gauge animal’s environmental perception through its vocalizations. We aimed evaluate emotional disturbance indicators free-range cavies’ vocalizations suggest index during threats. compared calls cavies two areas with similar but that differ terms of anthropic impacts. Area 1 (A1) near urban disturbed by livestock dogs, 2 (A2) farther free human disturbance. Data on behaviors were collected ad libitum both areas. The alarm whistle call, making up 73.5% total calls, was most common. Across 108 observation hours per area, 392 recorded, more A1 than A2 (223 vs. 169; Chi-square = 29.44, DF 1, P < 0.001). resulted 32% higher hourly call rate (2.6 calls/h 1.6 calls/h). Both male female had high-frequency (F 388 7.80, 0.005) peak-frequency 21.32, Given landscape resource availability areas, differences emission parameters are likely linked responses disturbances A1. Thus, at 2.6 or higher, above 7222 Hz 2603 Hz, can indicate anthropogenic biome, aiding remote efforts.

Язык: Английский

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Bioacoustic analyses reveal that bird communities recover with forest succession in tropical dry forests

Avian Conservation and Ecology, Год журнала: 2020, Номер 15(1)

Опубликована: Янв. 1, 2020

Owen, K. C., A. D. Melin, F. Campos, L. M. Fedigan, T. W. Gillespie, and J. Mennill. 2020. Bioacoustic analyses reveal that bird communities recover with forest succession in tropical dry forests. Avian Conservation Ecology 15(1):25. https://doi.org/10.5751/ACE-01615-150125

Язык: Английский

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Livestock grazing to maintain habitat of a critically endangered grassland bird: Is grazer species important?

Ecological Applications, Год журнала: 2022, Номер 32(5)

Опубликована: Март 25, 2022

Livestock grazing is an important management tool for biodiversity conservation in many native grasslands across the globe. Understanding how different species interact with their environment integral to achieving goals. In semiarid of Australia, by sheep or cattle used manipulate vegetation structure suit habitat needs a globally unique, critically endangered grassland bird, plains-wanderer Pedionomus torquatus. However, there has been no investigation whether and differ effects on and, therefore, it unknown if these grazers are substitutable as tool. Using experiment over 3 years, we determined grazer type (sheep, cattle) occurrence vocal activity plains-wanderer, composition, food availability. We also examined encounter rates other birds. Plains-wanderer breeding was inferred from vocalization captured bioacoustic recorders. Spotlighting measure found that altered habitat. Grasslands grazed were typically more open, less variable, lacked patches dense relative those sheep. Grazer did not influence likelihood occurrence, but year survey affect activity. The number days one calls significantly increased at sites year-3, which coincided enduring drought conditions. Similarly, rate all birds, bird richness, Australasian pipit Anthus novaeseelandiae between years. Dense specialists (such stubble quail Coturnix pectoralis) positively associated As tool, useful when goal support open plains-wanderer. substitutability likely be dependent upon climate. caution loss during could limit availability optimal

Язык: Английский

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