First Record of the Black-Bearded Tomb Bat Taphozous melanopogon Temminck, 1841 (Chiroptera: Emballonuridae) from Japan

Kobayashi, Shun; Maeda, Kishio; Tamura, Hisao; Izawa, Masako

doi:10.3106/ms2022-0007

Cited by 1 publication

(1 citation statement)

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“…Consequently, we scrutinized the bat assemblages across selected 59 grids from 136 grids where distribution data were assigned and 12 islands (Figures S1 and S2). The Japanese Archipelago hosts 37 identified species of bats (Funakoshi et al., 2022; Kobayashi et al., 2022; Ohdachi et al., 2015), except for two species that are considered to be extinct ( Pteropus loochoensis and Pipistrellus sturdeei ). Murina tenebrosa and Taphozous melanopogon were excluded from this study due to the limited presence of only one individual reported within the Japanese Archipelago.…”

Section: Methodsmentioning

confidence: 99%

Scale‐dependent influences of environmental, historical, and spatial processes on taxonomic and functional beta diversity of Japanese bat assemblages

Maki,

Sannomiya,

Hirao

et al. 2024

Ecology and Evolution

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This study investigated the relative influences of environmental, spatial, and historical factors, including the island‐specific history of land connectivity, on bat assemblages in the Japanese Archipelago. We collected bat distribution data from 1408 studies and assigned them to Japan's First Standard Grid (approximately 6400 km2). Japanese bat assemblages were analyzed at two scales: the entire Japanese Archipelago comprised 16 islands and exclusively the four main islands. At first, we calculated taxonomic and functional total beta diversity (βtotal) by Jaccard pairwise dissimilarity and then divided this into turnover (βrepl) and richness‐difference (βrich) components. We conducted hierarchical clustering of taxonomic beta diversity to examine the influence of the two representative sea straits, Tsugaru and Tokara, which are considered biogeographical borders. Variation partitioning was conducted to evaluate the relative effects of the three factors on the beta diversity. Clustering revealed that the Tokara Strait bordered the two major clades; however, the Tsugaru Strait did not act as a biogeographical border for bats. In the variation partitioning, shared fraction between spatial and historical factors significantly explained taxonomic and functional βtotal and taxonomic βrepl at the entire archipelago scale, but not at the four main islands scale extending only Tsugaru Strait but not Tokara Strait. Pure environmental factors significantly explained functional βtotal at both scales and taxonomic βtotal only at the four main islands scale. These results suggest that spatial and historical factors are more pronounced in biogeographical borders, primarily structuring assemblage composition at the entire archipelago scale, especially in taxonomic dimension. However, current environmental factors primarily shape the assemblage composition of Japanese bats at the main island scale. The difference in results between the two scales highlights that the primary processes governing assemblages of both dimensions depend on the quality of the dispersal barriers between terrestrial and aquatic barriers for bats.

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Section: Methodsmentioning

confidence: 99%