bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2022, Volume and Issue: unknown
Published: Nov. 3, 2022
Abstract Beta diversity, which quantifies the compositional variation among communities, is one of fundamental partitions biodiversity and associated with abiotic biotic drivers. Unveiling these drivers essential for understanding various ecological processes in past recent faunal communities. Although quantification measures beta diversity has improved over years, potential dependence on methodological choices are relatively understudied. Here, we investigate effect variable scale sampling different at a regional scale. The west coast India bordering eastern margin Arabian sea, presents coastal stretch approximately 6100km from 8–21°N. We used marine bivalve distribution data, consisting live occurrence data literature reports abundance death assemblages collected localities representing latitude bins. tested if observed explained by scales due to differences bin sizes unequal coastline length. developed null model generate pattern an increase spatial increasing grain size along 14 bins progressively. Our demonstrates that both dead dataset, total measured Bray-Curtis, Whittaker Sorenson indices decreases species replacement (turnover) evaluated Simpson index loss (nestedness) increases A comparison between simulated using K-S test demonstrated significantly generated assemblages. This implies alone does not this region. results show environmental parameters such as salinity, productivity, cyclones play significant role shaping coast. study provides approach evaluating comparing diversity. It also highlights importance standardization while inferring about driving changes.
Language: Английский