2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/26/2021 | 8:30 AM - 10:30 AM | Analysis of localized water chemistry and land use drivers of macroinvertebrate community structure using multivariate modelling and ordination techniques | Virtual Platform
Analysis of localized water chemistry and land use drivers of macroinvertebrate community structure using multivariate modelling and ordination techniques
An assessment of land use, water chemistry and macroinvertebrate community data was performed at 20 stream sites in southwestern Pennsylvania and West Virginia’s Northern Panhandle. Environmental variables were related to macroinvertebrate community response variables using ordination techniques via Nonmetric Multidimensional Scaling (NMS) and Dendrograms, as well as through hierarchical modelling using the Integrated Nested Laplace Approximation (INLA). NMS biplots revealed strong associations between ordination axes and macroinvertebrate diversity scores, watershed development, ambient annual turbidity, and riparian forest cover. Using site groupings generated from cluster analysis, INLA models revealed significant effects on macroinvertebrate community response from ambient annual conductivity, watershed development and riparian agricultural cover. Results support regionwide water quality assessments citing conductivity and sedimentation as prevailing in-stream stressors, as well as land use characteristics as determining factors of water quality, even at localized scales.
- Land use
- Conductivity
- GIS upscaling
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Presenters/Authors
Garrett Hoover
(), West Liberty University, gwhoover@westliberty.edu;
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