气候变化领域集成服务门户(CCPortal): Spatial structure and beta-diversity of phytoplankton in Tibetan Plateau lakes: nestedness or replacement?

CCPortal

DOI	10.1007/s10750-017-3433-7
	Spatial structure and beta-diversity of phytoplankton in Tibetan Plateau lakes: nestedness or replacement?
	Yang, Yang; Hu, Ren; Lin, Qiuqi; Hou, Juzhi; Liu, Yongqin; Han, Bo-Ping; Naselli-Flores, Luigi
通讯作者	Han, BP (通讯作者)
发表日期	2018
ISSN	0018-8158
EISSN	1573-5117
起始页码	301
结束页码	314
卷号	808 期号:1
英文摘要	Spatial patterns and beta-diversity of phytoplankton assemblages depend on the relative importance of species dispersal capacity and species-sorting. Variability in species composition, composed by differences in species richness (nestedness) and/or species replacement, may be caused by niche availability and environmental selection. A field survey was carried out in Tibetan plateau on 38 lakes. Tibetan plateau lakes, located at high elevation, are harsh ecosystems characterized by low temperatures, low available nutrients, high UV amount, and strong salinity gradients. Only well-adapted species can survive in these environments. We therefore hypothesized that environmental filtering was the main factor determining phytoplankton assemblage structure in these lakes, and that species nestedness largely contributed to beta-diversity. Spatial analysis showed that both environmental variables and broad-scale spatial variables accounted for the variation of phytoplankton assemblages. In particular, phytoplankton was mainly shaped by spatially structured environmental heterogeneity, which resulted in low alpha-diversity and high beta-diversity. In contrast to our assumption, species turnover contributed to the majority of beta-diversity of the studied assemblages. Local environments selected species with the corresponding stress-tolerant traits. Within the narrow range of available niches, environmental filtering of phytoplankton traits induced species' replacement along environmental gradients.
关键词	COMPREHENSIVE FRAMEWORK RICHNESS GRADIENTS SPECIES TURNOVER PATTERNS COMPONENTS ECOLOGY COMMUNITIES DISPERSAL BIOGEOGRAPHY NEUTRALITY
英文关键词	Harsh environment; Spatial scales; Environmental filtering; Diversity; Niche theory
语种	英语
WOS研究方向	Marine & Freshwater Biology
WOS类目	Marine & Freshwater Biology
WOS记录号	WOS:000423827000021
来源期刊	HYDROBIOLOGIA
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259182
推荐引用方式 GB/T 7714	Yang, Yang,Hu, Ren,Lin, Qiuqi,et al. Spatial structure and beta-diversity of phytoplankton in Tibetan Plateau lakes: nestedness or replacement?[J]. 中国科学院青藏高原研究所,2018,808(1).
APA	Yang, Yang.,Hu, Ren.,Lin, Qiuqi.,Hou, Juzhi.,Liu, Yongqin.,...&Naselli-Flores, Luigi.(2018).Spatial structure and beta-diversity of phytoplankton in Tibetan Plateau lakes: nestedness or replacement?.HYDROBIOLOGIA,808(1).
MLA	Yang, Yang,et al."Spatial structure and beta-diversity of phytoplankton in Tibetan Plateau lakes: nestedness or replacement?".HYDROBIOLOGIA 808.1(2018).