Xie Lei, Yang Yuan, Li Yao, Chen Shuifei, Feng Yueyao, Wang Ningjie, Lv Ting, Ding Hui, Wang Lu, Fang Yanming
Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of State Forestry and Grassland Administration on Subtropical Forest Biodiversity Conservation, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China.
Research Center for Nature Conservation and Biodiversity, State Environmental Protection Scientific Observation and Research Station for Ecology and Environment of Wuyi Mountains, State Environmental Protection Key Laboratory on Biosafety, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China.
Biology (Basel). 2021 Oct 23;10(11):1089. doi: 10.3390/biology10111089.
Species diversity (SD) and genetic diversity (GD) are the two basic levels of biodiversity. In general, according to the consensus view, the parallel effects of environmental heterogeneity, area, and connectivity on two levels, can drive a positive correlation between GD and SD. Conversely, a negative correlation or no correlation would be expected if these effects are not parallel. Our understanding of the relationships between SD and GD among different ecosystems, sampling methods, species, and under climate change remains incomplete. In the present study, we conducted a hierarchical meta-analysis based on 295 observations from 39 studies and found a positive correlation between genetic diversity and species diversity (95% confidence interval, 7.6-22.64%). However, significant relationships were not found in some ecosystems when we conducted species-genetic diversity correlation analysis based on a single ecosystem. Moreover, the magnitudes of the correlations generally decreased with the number of sampling units and the annual average the temperature of sampling units. Our results highlight the positive correlation between GD and SD, thereby indicating that protecting SD involves protecting GD in conservation practice. Furthermore, our results also suggest that global increases in temperature during the 21st century will have significant impacts on global biodiversity.
物种多样性（SD）和遗传多样性（GD）是生物多样性的两个基本层面。一般来说，根据普遍共识，环境异质性、面积和连通性在这两个层面上的平行效应能够推动GD和SD之间产生正相关。相反，如果这些效应不平行，则预期会出现负相关或无相关性。我们对于不同生态系统、采样方法、物种以及在气候变化情况下SD和GD之间关系的理解仍不完整。在本研究中，我们基于来自39项研究的295条观测数据进行了分层荟萃分析，发现遗传多样性与物种多样性之间存在正相关（95%置信区间，7.6 - 22.64%）。然而，当我们基于单一生态系统进行物种 - 遗传多样性相关性分析时，在某些生态系统中未发现显著关系。此外，相关性的大小通常会随着采样单元数量以及采样单元的年平均温度而降低。我们的结果突出了GD和SD之间的正相关，从而表明在保护实践中保护SD涉及保护GD。此外，我们的结果还表明21世纪全球气温升高将对全球生物多样性产生重大影响。
