2023 Early Hearing Detection & Intervention Conference

March 5-7, 2023 • Cincinnati, OH

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5/24/2018 | 2:00 PM - 2:15 PM | ASSESSING THE STATE OF FRESHWATER ECOSYSTEMS AT THE CATCHMENT SCALE TO SUPPORT THE ENVIRONMENTAL MANAGEMENT OF RIVERS | 310 B

ASSESSING THE STATE OF FRESHWATER ECOSYSTEMS AT THE CATCHMENT SCALE TO SUPPORT THE ENVIRONMENTAL MANAGEMENT OF RIVERS

Most freshwater ecosystems are confronted with multiple anthropogenic impairments at the same time. This calls for comprehensive management strategies to counteract, or even prevent, long-term impacts on habitats and their biodiversity, as well as on their ecological functions and services. Nevertheless, most ecological assessments are designed to determine the state of single sites, or single stream reaches. This information is insufficient to capture the condition of an entire river system and may mislead environmental managers and conservation practitioners in their decision making. We present an approach to describe the state of entire catchments using decision support methods, based on surveyed morphological and modeled nutrient data on the reach scale. For this purpose, we developed a set of spatial criteria summarizing the existing information based on the concept of ecological resilience in a spatially explicit way. The results of our approach are compared to data currently available for decision making, such as point based biotic indicators for benthic macroinvertebrates. The potential applications of the proposed approach are discussed, particularly for supporting the strategic planning and spatial prioritization of restoration measures.

Restoration
Management
Ecosystem

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Presenters/Authors

Mathias Kuemmerlen (), Eawag, mathias.kuemmerlen@eawag.ch;