2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/26/2021 | 8:30 AM - 10:30 AM | SEASONAL DYNAMICS OF FOOD RESOURCES DOWNSTREAM OF DIFFERENT TRIBUTARIES IN CIBOLO CREEK, TEXAS | Virtual Platform
SEASONAL DYNAMICS OF FOOD RESOURCES DOWNSTREAM OF DIFFERENT TRIBUTARIES IN CIBOLO CREEK, TEXAS
Food resources for fish were analyzed in a creek undergoing urban development and wastewater inputs to understand whether food resources varied seasonally and spatially. Benthic organic matter and algal biomass was sampled in Cibolo Creek located in south-central Texas, below three tributaries-Currey, Menger, and Browns Creek. Currey and Menger are perennial streams carrying wastewater effluent, while Browns is a natural ephemeral stream. Summer season sampling was done during June6-20, 2019; fall season sampling was done during October22-24, 2019; winter season sampling was done during January14-23, 2020 and spring season sampling was done in March23 and 24, 2020. Fine particulate organic matter (FPOM), Ash Free Dry Mass (AFDM) for algae, Chlorophyll-a, and Coarse particulate organic matter (CPOM) did not differ significantly between sites within seasons. Sites below each tributary showed different seasonal patterns in food resources, which may be related to urban impacts such as wastewater effluent or urban runoff. However, only Menger differed significantly in FPOM, AFDM, and Chlorophyll-a between seasons. The findings will help to understand an adverse effect of urbanization on the creek which causes scarcity or a shift in types of food resources for fish.
- Stream
- Ecosystem
- Organic matter
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Presenters/Authors
Namrata Giri
(), University of Texas at San Antonio(UTSA), namrata.giri@utsa.edu;
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