Macroinvertebrate Community Structure Along the Longitudinal Gradient of an Agriculturally Impacted Stream

1998 ◽  
Vol 22 (3) ◽  
pp. 445-457 ◽  
Author(s):  
Michael D. Delong ◽  
Merlyn A. Brusven
Keyword(s):  
Community Structure ◽  
Macroinvertebrate Community ◽  
Longitudinal Gradient

Macroinvertebrate Community Structure in Three-Gorges Reservoir, China

2008 ◽  
Vol 93 (2) ◽  
pp. 175-187 ◽  
Author(s):  
Mei-Ling Shao ◽  
Zhi-Cai Xie ◽  
Xin-Qin Han ◽  
Ming Cao ◽  
Qing-Hua Cai
Keyword(s):  
Community Structure ◽  
Three Gorges Reservoir ◽  
Macroinvertebrate Community ◽  
Three Gorges

The Effect of Disturbance on Macroinvertebrate Community Structure in Northeastern Oregon

2019 ◽  
Vol 92 (sp5) ◽  
pp. 364
Author(s):  
Randi M. Bowman ◽  
Leigh C. Latta ◽  
Michael Edgehouse
Keyword(s):  
Community Structure ◽  
Macroinvertebrate Community

scholarly journals Assessing macroinvertebrate communities in relation to environmental variables: the case of Sambandou wetlands, Vhembe Biosphere Reserve

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Tatenda Dalu ◽  
Rivoningo Chauke
Keyword(s):  
Community Structure ◽  
Water Depth ◽  
Environmental Variables ◽  
Anthropogenic Activities ◽  
Biosphere Reserve ◽  
High Water ◽  
Macroinvertebrate Community ◽  
Macroinvertebrate Communities ◽  
Negative Effect ◽  
Macrophyte Cover

AbstractThe Vhembe Biosphere Reserve, South Africa, contains many wetlands that serve as wildlife habitats and provide vital ecosystem services. Some of the wetlands are continuously being degraded or destroyed by anthropogenic activities causing them to disappear at an alarming rate. Benthic macroinvertebrates are known as good water quality bioindicators and are used to assess aquatic ecosystem health. The current study investigated habitat quality using macroinvertebrate community structure and other biotic variables (i.e. phytoplankton, macrophytes) in relation to environmental variables in the Sambandou wetlands using canonical correspondence analysis (CCA). A total of fifteen macroinvertebrate families were identified over two seasons. The CCA highlighted seven variables, i.e. pH, phosphate concentration, temperature, ammonium, macrophyte cover, conductivity and water depth, which were significant in structuring macroinvertebrate community. Picophytoplankton and microphytoplankton concentrations decreased from winter to summer, whereas nanophytoplankton concentration increased from winter to summer. Thus, the dominance of small-sized phytoplankton indicated nutrient limitation and decreased productivity, whereas winter sites 2 and 3 were dominated by large-celled phytoplankton, highlighting increased productivity. Winter sites were mostly negatively associated with CCA axis 1 and were characterised by high temperature, phosphate and ammonium concentrations, macrophyte cover, pH and conductivity. Summer sites were positively associated with axis 1, being characterised by high water depth and pH levels. The results obtained highlighted that agricultural activities such as cattle grazing and crop farming and sand mining/poaching had a negative effect on macroinvertebrate community structure.

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