Diel activity of insectivorous bats in response to land-use change in São Tomé Island, Gulf of Guinea

Biodiversity and Conservation, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 22, 2025

Language: Английский

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Taxonomic, functional, and phylogenetic diversity of aerial insectivorous bats decay on forest islands created by a mega Amazonian dam

Global Ecology and Conservation, Journal Year: 2025, Volume and Issue: unknown, P. e03488 - e03488

Published: Feb. 1, 2025

Language: Английский

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Habitat use and diel activity of insectivorous bats across land-use types on an Afrotropical oceanic island

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2025, Volume and Issue: unknown

Published: April 16, 2025

Abstract Tropical island biodiversity is declining at alarming rates. Yet, understanding how species are coping with such disturbance largely limited for afro-tropical islands. Here we examined habitat use and diel activity of insectivorous bats across different land-use types covering the endemic-rich Príncipe Island, Central West Africa. We acoustically surveyed 48 sites throughout old-growth forests, secondary re-growth cocoa shaded plantations, horticultures. Based on 17,527 bat-passes, were able to record all four bat known occur Príncipe, including recently described Pseudoromicia principis , most frequently recorded species. Taphozous mauritianus a data deficient open-space forager, was least Species lowest in as well edge-forager P. . The forager Mops pumilus forest habitats, whereas Hipposideros ruber restricted these habitats. Diel patterns M. varied between forests non-forest those remained similar. Interspecific overlap decreased towards more altered types. Our findings emphasize that conserving remaining along current mosaic land-uses, needed maintain Príncipe’s complete assemblages.

Language: Английский

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Aerial insectivorous bat responses to 30 years of forest insularization in a dam-created Amazonian archipelagic landscape

Biological Conservation, Journal Year: 2023, Volume and Issue: 285, P. 110222 - 110222

Published: Aug. 9, 2023

Language: Английский

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Biodiversity responses to insular fragmentation in Amazonia: two decades of research in the Balbina Hydroelectric Reservoir

Zoological research: diversity and conservation., Journal Year: 2024, Volume and Issue: 1(2), P. 106 - 116

Published: Jan. 1, 2024

As hydropower development expands across lowland tropical forests, flooding and concomitant insular fragmentation have become important threats to biodiversity.Newly created landscapes serve as natural laboratories investigate biodiversity responses fragmentation.One of these most iconic is the Balbina Hydroelectric Reservoir in Brazilian Amazonia, occupying >400 000 ha comprising >3 500 forest islands.Here, we synthesise current knowledge on a wide range biological groups at Balbina.Sampling has largely concentrated set 22 islands three mainland sites.In total, 39 studies were conducted over nearly two decades, covering 17 vertebrate, invertebrate, plant taxa.Although species varied according taxonomic group, island area was consistently included played pivotal role 66.7% all examining patterns diversity.Species persistence further affected by traits, mostly related capacity use/traverse aquatic matrix or tolerate habitat degradation, noted for vertebrates orchid bees.Further research needed improve our understanding such effects wider ecosystem functioning.Environmental Impact Assessments must account changes both remaining amount configuration, subsequent long-term losses.

Language: Английский

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Land use change and Ecological Network in rapid urban growth region in Selangor region, Malaysia

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: July 16, 2024

Abstract Rapid urbanization will cause various land use changes and the vast occupation of green spaces, a critical factor in deterioration biodiversity urbanized areas. Some species wildlife are endangered due to habitat shrunk fragmentation. However, Malaysia's current protection range is still limited. The Ecological Network (EN) refers framework ecological components, which can be obtained by geographical technical approaches support more diversity ranges. Furthermore, little research has been found on EN Malaysia impact change EN. Therefore, Selangor region selected as study area. This paper quantifies measures extent obtain EN’s change. result shown that forestland decreased, explored people for housing agriculture from 2000 2020. trend Overall, this study's results imply led EN's worsened performance 2020 hopes could help supply information conserving future development urban sustainable planning Malaysia.

Language: Английский

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Protected habitats support bats in Mediterranean dry grasslands

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 882, P. 163415 - 163415

Published: April 11, 2023

The replacement of natural habitats by urbanization and agricultural land reclamation is one the main drivers biodiversity loss. Among European habitat types, grasslands are particularly prone to anthropogenic pressures, being also recognized as conservation priorities within Habitats Directive. Nonetheless, little known on relationship between grasslands, their quality, most animals' taxa that may rely upon them. Here we focus role Mediterranean dry protected EU legislation in sustaining bat populations, setting our study hotspot Italy. By conducting acoustic surveillance at 48 sites a area devoted conserve semi-natural found all species regular exploiters such open environments. Grassland terms extent high-diversity habitats, was key factor shaping use bats considered guilds, together with several terrain landscape features, which showed more guild-specific effects. Moreover, results indicate assemblages functionally shifted along an ecological gradient from highly modified well-conserved grassland sites, indicating prevalence opportunistic former, higher abundance concern latter. Overall, demonstrate effects EU-listed extend onto case highlighting importance preserving tool for conserving mobile species.

Language: Английский

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Sonotype‐level responses of Afrotropical hipposiderid bats to local‐scale effects of rainforest structure

African Journal of Ecology, Journal Year: 2023, Volume and Issue: 61(4), P. 829 - 839

Published: June 8, 2023

Abstract Bats exhibit a variety of life‐history traits that can serve as valuable surrogate metrics terrestrial ecosystem health. Here, we investigate how sonotype activity hipposiderid bats covaries with habitat structure at finer spatial scales. We recorded passive echolocation calls and measured key attributes in six rainforests the Lomami Yangambi landscapes, Democratic Republic Congo. Using bat passes measure activity, clustered based on call similarity to control for within‐sonotype variation activity. Over 432 h recording, detected 370 matching three subgroups, recovering eight potential species. Open habitats negatively affected Hipposideros subgroup, which was associated higher frequencies. Indeed, peaked early evening when mean post‐sunset temperature above nocturnal average declined until morning temperatures dropped below nightly average. All variables were marginally correlated Doryrhina whereas Macronycteris more active open habitats. Our findings indicate probable flexibility use lower echolocating point possible foraging guilds modulate responses structure.

Language: Английский

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Measuring the Multi-Scale Landscape Pattern of China’s Largest Archipelago from a Dual-3D Perspective Based on Remote Sensing

Remote Sensing, Journal Year: 2023, Volume and Issue: 15(24), P. 5627 - 5627

Published: Dec. 5, 2023

Measuring the landscape pattern from a three-dimensional perspective is of great significance for comprehensively revealing complex spatial characteristics island ecosystems. However, archipelago composed rocky islands has received little attention as its are difficult to quantify. This study took largest in China, Zhoushan Archipelago, area and constructed an evaluation model dual-three-dimensional (dual-3D) perspective. The divided into upper lower layers, namely surface based on topography elements above (i.e., vegetation buildings), then evaluated their patterns perspective, respectively. dual-3D multiple scales achieved excellent results archipelago. First, was perspectives, including human interference, fragmentation, space, building space. Second, indices such interference index (HITI), fragmentation (LFTI), (VTI), (BTI) established at revealed heterogeneity within between islands. Environmental factors elevation, slope, exhibited significant correlations with them. There were differences two-dimensional (2D) (3D) high values mainly distributed areas topographic changes larger In addition, unit increased, HITI became more responsive transitions 2D 3D, while LFTI opposite. Therefore, multiscale measurement China’s high-resolution remote sensing carried out perspectives accurately reveal heterogeneity.

Language: Английский

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Indirect effects of habitat amount mediated by habitat configuration determine bat diversity at the landscape-scale in Peninsular Malaysia

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

The impacts of fragmentation are often overlooked in landscape studies investigating how habitat loss biodiversity, despite the casual relationship linking both processes. As is primary cause fragmentation, understanding inter-related effects these twin processes on biodiversity key to minimise loss. Here we assess amount and configuration influence insectivorous bat assemblages, considering direct processes, as well indirect mediated through configuration. Bats were acoustically surveyed along independent gradients (forest cover) (number patches edge density) across 28 insular landscapes embedded within a Malaysian hydroelectric reservoir. Using Structural Equation Modelling, examined sonotype richness, total, guild-specific activity (forest, open-space foragers). Forest cover had positive effect richness forest forager activity. quadratic density was strong overall positive, but while below 30% cover, increasingly forested high densities, opposite pattern observed more landscapes. On other hand, consistently harboured less patches. Owing low our negative effects, (mediated therefore outweighing any effect. number little assemblage, except total which higher harbouring result, only Our results highlight that, natural settings, can hardly be altered without influencing configuration, thereby preventing management threats. Minimising essential balance associated prevailing bats tropical forests.

Language: Английский

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