气候变化领域集成服务门户(CCPortal): Biodiversity patterns of the benthic macrofaunal communities across the intertidal sedimentary shores of two Antarctic islands

CCPortal

DOI	10.1016/j.marenvres.2023.106333
	Biodiversity patterns of the benthic macrofaunal communities across the intertidal sedimentary shores of two Antarctic islands
	Revanales, T.; Lastra, M.; Sanchez-Mata, A.; Garcia-Gallego, M. A.; Mora, J.; Rodil, I. F.
发表日期	2024
ISSN	0141-1136
EISSN	1879-0291
起始页码	194
卷号	194
英文摘要	Antarctic benthic ecosystems support a unique fauna characterized by high levels of diversity and endemism. However, our knowledge of the macrofauna communities across the Antarctic intertidal sedimentary shore is limited, and their fundamental ecological features, including spatial variability, remain poorly understood. This study aimed to investigate the abundance, community structure (i.e. taxa-specific abundance), and biodiversity patterns (a-, 13-, and A -diversity) of benthic macrofauna communities on intertidal sedimentary shores of two Antarctic islands (South Shetland archipelago, N of Antarctic Peninsula): Livingston and Deception. We conducted a quantitative sampling during two Austral summer campaigns (2004 and 2005), studying eleven intertidal sites, with five sites located on Livingston and six on Deception. Our results demonstrated a significantly higher abundance of intertidal benthic macrofauna communities on Livingston than on Deception. Furthermore, significant differences in community structure were observed between the two islands. In terms of biodiversity patterns, there were no significant differences in the number of taxa within communities (a -diversity) between the two islands. However, significant differences in the variation of community composition (determined by the number and identity of taxa) between intertidal sites (13 -diversity) were observed, shedding light on the higher total taxa count (A -diversity) on Livingston compared to Deception. We suggest that the island -specific characteristics (e.g., granulometric characteristics, ice disturbance, sedimentation rates, and geothermal activity) determine the differences observed in macrofauna communities. However, other ecological processes and factors are operating on different spatial and temporal scales (e.g., population dynamics, biotic interactions, oceanographic conditions, and climate change) that influence the occurrence and abundance of macrofaunal taxa. Our findings contribute to the fundamental understanding of the spatial variability of these communities and provide essential information for better management decisions and conservation practices in Antarctic coastal ecosystems.
英文关键词	Beaches; Benthic ecology; Diversity; Intertidal; Macrofauna; Marine ecology; Patterns of spatial variability; Southern ocean; Spatial scale
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Toxicology
WOS类目	Environmental Sciences ; Marine & Freshwater Biology ; Toxicology
WOS记录号	WOS:001155005500001
来源期刊	MARINE ENVIRONMENTAL RESEARCH
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/302986
作者单位	Universidad de Cadiz; Universidade de Vigo; Universidade de Vigo; Universidade de Santiago de Compostela
推荐引用方式 GB/T 7714	Revanales, T.,Lastra, M.,Sanchez-Mata, A.,et al. Biodiversity patterns of the benthic macrofaunal communities across the intertidal sedimentary shores of two Antarctic islands[J],2024,194.
APA	Revanales, T.,Lastra, M.,Sanchez-Mata, A.,Garcia-Gallego, M. A.,Mora, J.,&Rodil, I. F..(2024).Biodiversity patterns of the benthic macrofaunal communities across the intertidal sedimentary shores of two Antarctic islands.MARINE ENVIRONMENTAL RESEARCH,194.
MLA	Revanales, T.,et al."Biodiversity patterns of the benthic macrofaunal communities across the intertidal sedimentary shores of two Antarctic islands".MARINE ENVIRONMENTAL RESEARCH 194(2024).