This study investigated the relationship between biological traits of aquatic insects and their environmental variables. Biological traits are defined as specific and measurable properties of an organism, related to, for example, mobility, reproduction, life history and use of resources. Therefore, ...
This study investigated the relationship between biological traits of aquatic insects and their environmental variables. Biological traits are defined as specific and measurable properties of an organism, related to, for example, mobility, reproduction, life history and use of resources. Therefore, the traits of an organism represent its relationships to the biotic and abiotic environment. In this study, 19 traits (57 modality), 168 taxa from 4 families (Ephemertoptera, Plecopetra, Tricoptera, Coleoptera, Odonata), and 21 (geography, meteorology, land use, hydrology , water quality) environmental variables were used. For the analysis, the taxa were clustered according to the similarities of traits and the relationship with environmental variables was examined through Non-metric Multidimensional Scaling (NMDS) and Fourth-corner analysis.
As a result of the two-way cluster analysis, cluster 1 included most of the Ephemeroptera, cluster 2 had Tricoptera, cluster 3 had Odonata, and cluster 4 contained Coleoptera. Clusters 1 and 2 and clusters 3 and 4 showed significant differences of environmental factors, and the traits were also significantly different. Clusters 1 and 2 were associtated with areas with low water quality levels and a high proportion of forest area in the land use, and had low crawling rate and small body size. On the other hand, clusters 3 and 4 were associtated with high water quality level and high proportion of urban area, and the traits were preferred to the lectic water, large body size and high crawling rate. Some traits discriminated the differences of various environmental factors and explained structure and functions of aquatic insect communities well.
This study investigated the relationship between biological traits of aquatic insects and their environmental variables. Biological traits are defined as specific and measurable properties of an organism, related to, for example, mobility, reproduction, life history and use of resources. Therefore, the traits of an organism represent its relationships to the biotic and abiotic environment. In this study, 19 traits (57 modality), 168 taxa from 4 families (Ephemertoptera, Plecopetra, Tricoptera, Coleoptera, Odonata), and 21 (geography, meteorology, land use, hydrology , water quality) environmental variables were used. For the analysis, the taxa were clustered according to the similarities of traits and the relationship with environmental variables was examined through Non-metric Multidimensional Scaling (NMDS) and Fourth-corner analysis.
As a result of the two-way cluster analysis, cluster 1 included most of the Ephemeroptera, cluster 2 had Tricoptera, cluster 3 had Odonata, and cluster 4 contained Coleoptera. Clusters 1 and 2 and clusters 3 and 4 showed significant differences of environmental factors, and the traits were also significantly different. Clusters 1 and 2 were associtated with areas with low water quality levels and a high proportion of forest area in the land use, and had low crawling rate and small body size. On the other hand, clusters 3 and 4 were associtated with high water quality level and high proportion of urban area, and the traits were preferred to the lectic water, large body size and high crawling rate. Some traits discriminated the differences of various environmental factors and explained structure and functions of aquatic insect communities well.
주제어
#Biological traits, functional groups, aquatic insects, freshwater ecosystem
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