Deciduous forests hold conservation value for birds within South Andaman Island, India DOI Creative Commons
Arpitha Jayanth,

Z. P. Patel,

Mohammed Mubeen

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Май 2, 2024

ABSTRACT Greater diversity of habitats on islands is often correlated with higher species richness (including endemic and threatened taxa), implying the need to understand species-habitat associations. Such habitat associations would also point towards role abiotic filtering competition in structuring communities, necessitating examination traits phylogenetic relationships intra-island community organisation, an aspect poorly examined literature. We investigated composition forest bird communities closely co-occurring evergreen deciduous forests within South Andaman Island (Indian Ocean), wherein importance for birds undervalued. sampled 27 transects over two years compared across habitats. species-specific (forest) type, basal area, distance from human settlements, tested if these responses were explained by functional niche conservatism after factoring effects environmental predictors. Bird compositions markedly distinct types, having greater taxonomic, but not or phylogenetic, birds. The distribution birds, including several island was largely type (with 39% analysed showing occurrence probabilities forests), followed settlements area. did find evidence mediating preferences, perhaps due a relatively impoverished pool, as typical islands. Nevertheless, our results underscore value harbouring high islandic diversity, being preferred species. Given historic focus increasing anthropogenic pressure Andamans, we highlight critical include rapidly diminishing existing conservation plans.

Язык: Английский

Deciduous forests hold conservation value for birds within South Andaman Island, India DOI
Arpitha Jayanth,

Z. P. Patel,

Mohammed Mubeen

и другие.

Ecological Applications, Год журнала: 2025, Номер 35(2)

Опубликована: Март 1, 2025

Abstract Greater diversity of habitats on islands is often correlated with higher species richness (including endemic and threatened taxa), implying the need to understand species–habitat associations. Such habitat associations could also point toward role abiotic filtering competition in structuring communities, necessitating examination traits phylogenetic relationships intra‐island community organization, an aspect poorly examined literature. We investigated composition forest bird communities closely co‐occurring evergreen deciduous forests within South Andaman Island (Indian Ocean), wherein importance for birds undervalued. sampled 27 transects over 2 years compared across two habitats. species‐specific (forest) type, basal area, distance from human settlements, tested whether these were explained by functional signal after factoring effects environmental predictors. Bird compositions markedly distinct types, having greater taxonomic functional, but not phylogenetic, birds. The distribution birds, including several island, was largely type (with 39% analyzed showing occurrence probabilities forests), followed settlements area. did find evidence or mediating preferences, perhaps due a relatively impoverished pool, as typical islands. Nevertheless, our results underscore value harboring high islandic being preferred species. Given historic focus increasing anthropogenic pressure Andamans, we highlight critical include rapidly diminishing existing conservation plans.

Язык: Английский

Процитировано

0
Slowing taxon cycle can explain biodiversity patterns on islands: Insights into the biogeography of the tropical South Pacific from molecular data DOI Creative Commons
Gunnar Keppel, Francis J. Nge, Thomas Ibanez

и другие.

Journal of Systematics and Evolution, Год журнала: 2023, Номер 62(2), С. 201 - 214

Опубликована: Ноя. 6, 2023

Abstract Islands in the tropical Pacific Ocean are renowned for high biodiversity and endemism despite having relatively small landmasses. However, our knowledge of how this is formed remains limited. The taxon cycle, where well‐dispersed, earlier colonizers become displaced from coastal to inland habitats by new waves colonizers, producing isolated, range‐restricted species, has been proposed explain current patterns. Here, we integrate outcomes phylogenetic studies region investigate sources, age, number colonizations, diversification 16 archipelagos subtropical South Pacific. We then evaluate whether results support cycle as a plausible mechanism these observations. find that most species arrived less than 5 Mya geographically close suggesting colonization taxa frequent ongoing process. Therefore, findings broadly consistent with theory Taxon Cycle, which posits gradual displacement established lineages. Only oldest archipelagos, New Caledonia Fiji, do not conform trend, proportionally recent events, may slow on older islands. This conclusion further validated lower rate estimates younger found rates across negatively correlated area age. slows island age appears be suitable concept understanding dynamic nature patterns Islands.

Язык: Английский

Процитировано

6
Phylogenetic and functional trait‐based community assembly within Pacific Cyrtandra (Gesneriaceae): Evidence for clustering at multiple spatial scales DOI Creative Commons
Melissa A. Johnson

Ecology and Evolution, Год журнала: 2023, Номер 13(5)

Опубликована: Май 1, 2023

Tropical rainforest communities are often characterized by a small number of species-rich genera that contribute disproportionately to the alpha diversity in these habitats. In Pacific Basin, there nearly 200 species

Язык: Английский

Процитировано

4
Deciduous forests hold conservation value for birds within South Andaman Island, India DOI Creative Commons
Arpitha Jayanth,

Z. P. Patel,

Mohammed Mubeen

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Май 2, 2024

ABSTRACT Greater diversity of habitats on islands is often correlated with higher species richness (including endemic and threatened taxa), implying the need to understand species-habitat associations. Such habitat associations would also point towards role abiotic filtering competition in structuring communities, necessitating examination traits phylogenetic relationships intra-island community organisation, an aspect poorly examined literature. We investigated composition forest bird communities closely co-occurring evergreen deciduous forests within South Andaman Island (Indian Ocean), wherein importance for birds undervalued. sampled 27 transects over two years compared across habitats. species-specific (forest) type, basal area, distance from human settlements, tested if these responses were explained by functional niche conservatism after factoring effects environmental predictors. Bird compositions markedly distinct types, having greater taxonomic, but not or phylogenetic, birds. The distribution birds, including several island was largely type (with 39% analysed showing occurrence probabilities forests), followed settlements area. did find evidence mediating preferences, perhaps due a relatively impoverished pool, as typical islands. Nevertheless, our results underscore value harbouring high islandic diversity, being preferred species. Given historic focus increasing anthropogenic pressure Andamans, we highlight critical include rapidly diminishing existing conservation plans.

Язык: Английский

Процитировано

0