Describing termite assemblage structure in a Peruvian lowland tropical rain forest: a comparison of two alternative methods
Describing termite assemblage structure in a Peruvian lowland tropical rain forest: a comparison of two alternative methods
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DOI：
10.1007/s00040-014-0385-z
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发表时间：
2015-05
期刊：
影响因子：
1.3
通讯作者：
C. Dahlsjö;C. Dahlsjö;C. Dahlsjö;Catherine L. Parr;Y. Malhi;Patrick Meir;Patrick Meir;P. Eggleton
中科院分区：
文献类型：
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作者：
C. Dahlsjö;C. Dahlsjö;C. Dahlsjö;Catherine L. Parr;Y. Malhi;Patrick Meir;Patrick Meir;P. Eggleton
白蚁经常是低地热带森林中占主导地位的无脊椎动物分解者和生物扰动者，因此对有利于土壤稳定性、孔隙度和养分保持的生态系统过程产生强烈影响。在这项研究中，我们提供了第一个空间复制的数据集白蚁组合组成，丰度和生物量在秘鲁热带雨林采样六个独立的地块。此外，两种替代的抽样方法（样条法TM和样方法QM），提供白蚁物种密度数据，比较之间的地块。一系列的环境和空间变量和物种组成之间的关系进行了研究，使用典型对应分析变异分区。我们发现，TM捕获了较高比例的已知物种在网站（82%）相比，QM（66%）。此外，56%的物种采样的TM是共同的地块之间，而只有18%的物种重叠使用QM。因此，QM可能对物种库进行了欠采样。环境变量被证明可以解释更大比例的物种格局比空间变量与海拔，土壤温度和距离河流是最重要的。我们讨论了环境和空间变量对白蚁种类组成的影响。
Termites are frequently dominant invertebrate decomposers and bioturbators in lowland tropical forests and therefore strongly influence ecosystem processes favouring soil stability, porosity and nutrient retention. In this study, we provide the first spatially replicated dataset on termite assemblage composition, abundance and biomass in a Peruvian rainforest by sampling six separate plots. In addition, two alternative sampling methods (transect method-TM and quadrat method-QM), providing termite species density data, were compared among the plots. The relationships between a range of environmental and spatial variables and species composition were examined using canonical correspondence analysis variation partitioning. We found that the TM captured a higher proportion of the known species in the site (82 %) compared with the QM (66 %). In addition, 56 % of the species sampled by TM were common between the plots while only 18 % of species overlapped using the QM. The QM may therefore potentially have undersampled the species pool. Environmental variables were shown to explain a larger proportion of the species patterns than the spatial variables with elevation, soil temperature and distance to the river being the most important. We discuss the impacts of the environmental and spatial variables on termite species composition.