Functional diversity of avian communities in response to habitat fragmentation in human‐dominated landscapes of Tanzania miombo woodlands

African Journal of Ecology, Journal Year: 2024, Volume and Issue: 62(3)

Published: June 17, 2024

Abstract Biodiversity conservation in human‐inhabited landscapes is increasingly gaining attention due to the global decline of species. Understanding impact human activities on avian functional ecology becoming important as habitats are transformed. We assessed influence habitat fragmentation diversity (FD), focusing metrics like richness (FRic), evenness (FEve) and divergence (FDiv). calculated FRic, FEve FDiv across using ‘fundiversity’ R package. also Enhanced Vegetation Index (EVI) estimated land‐use cover study area from Landsat 8 images. observed higher FD minimally disturbed habitats, where among woodland had high while settlement low. This supports intermediate disturbance hypothesis, which suggests that moderate can increase species diversity. Our findings emphasise pivotal role fragmented shaping ecology, with environmental variables such EVI influencing habitats. Hence, we promote sustainable connectivity, proper land management practices conservation‐friendly agricultural for biodiversity conservation.

Language: Английский

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Road traffic has a consistent negative impact on a wide range of bird species in different habitats

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 13, 2025

Context. Road traffic has a major impact on the environment and numerous studies have shown how various species respond to road traffic. However, clear picture based large-scale of complete communities in different environments are affected by is lacking. Objectives. We assessed distance within which negatively impacts breeding bird densities extent effect distances differ between habitats. also tested intensity associated with distances. Methods. used large dataset from protocolled surveys > 140,000 territories 1500 m motorways across Netherlands. examined density individual species, for ecological groups all together. Finally, we influences Results. had consistent negative territory up approximately 650 groups. Within road-effect zones, birds were significantly lower (on average 25%) than at greater road. Effect positively Conclusions. These findings that affects manner this exacerbated will be useful policymakers assess or predict quantitative populations.

Language: Английский

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Comparing sampling methods to monitor population abundance while accounting for imperfect detection: an application of N-mixture models on Orthoptera

Global Ecology and Conservation, Journal Year: 2025, Volume and Issue: unknown, P. e03435 - e03435

Published: Jan. 1, 2025

Language: Английский

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Community Structure and Species Diversity of Birds in Heterogenous Habitats of an East African Growing Agricultural Corridor

African Journal of Ecology, Journal Year: 2024, Volume and Issue: 62(4)

Published: Oct. 4, 2024

ABSTRACT Species conservation mainly depends on the of their habitats where an understanding role that have in supporting species diversity and richness is important. This study aimed to determine how heterogeneous growing agriculture corridors support biodiversity birds terms abundance. We assessed diversity, abundance bird six different habitats: miombo woodland, montane forests, lowland agro‐ecosystems, wetland riverine Tanzania's corridor. assumed significantly influence abundance, diversity. recorded 299 which were categorised into 10 trophic guilds. Among guilds, invertebrate‐eating (52%) was species‐rich guild nectarivore (1%), herbivore aquatic (0.67%), terrestrial (0.67%) scavenger (0.34%) least guilds richness, The differed diversity; woodlands had highest levels There even distribution birds, despite fact wetlands agro‐ecosystems few reported there. A number endangered with minimum disturbance. These include Gyps africanus (CR), Ardeola idea , Polemaetus bellicosus Terathopius ecaudatus (EN). In order implement effective measures for habitats, we advocate proper land use, conservation‐friendly implementation connectivity small large scales.

Language: Английский

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Avifaunal assemblages within fresh and saltwater resources around a national park; the case of Lake Munyanyange, Lake Edward, and Kazinga Channel in Southwestern Uganda

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: June 24, 2024

Background Birds play a critical role in sustaining global ecosystems as well human livelihoods. Despite this value, their populations are declining at unprecedented rates with anthropogenic factors being the main driver. Local monitoring strategies provides data for enhancing activities while designing conservation interventions. Herein, we present preliminary results from bird undertaken within fresh and salt water sites Southwestern parts of Uganda. Methods Point count method was used during survey. This included recording birds seen or heard 100 m radius. done periodically (every 10 minutes) morning evening along transect were identified using identification keys. Diversity indices computed One-Way ANOVA to compute differences counts across different sites. Post-Hoc analysis Tukey’s HSD test. All analyses R software. Results A total 7476 individuals 68 species recorded 558 observations made The freshwater lakes had highest diversity abundance Kazinga Channel inside park scoring (H' = 2.211). Ceryle rudis (29%, n= 7476) number followed by Ploceus melanocephalus. The choice did not vary Lake Edward (P =0.852). Meanwhile these comparison Munyanyange, there significant difference chosen i.e. P 0.009 0.015 respectively. migratory that fly national boundaries Conclusion There is high around includes species. Conservation interventions thus ought be designed targeting selected enhance stability scales. can improved generated through activities.

Language: Английский

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