2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/25/2021 | 8:30 AM - 10:30 AM | RESPONSE OF FRESHWATER SHRIMPS TO NATURAL AND ANTHROPOGENIC DISTURBANCES | Virtual Platform
RESPONSE OF FRESHWATER SHRIMPS TO NATURAL AND ANTHROPOGENIC DISTURBANCES
Loss of habitat connectivity possess a major threat for aquatic migratory species. Worldwide man-made dams are structures with high potential to negatively impact migratory species by disrupting habitat connectivity. In addition to dams, in the tropic’s droughts can have strong negative effects on aquatic communities due to habitat loss or connectivity in the upper parts of the drainage basin. We selected freshwater amphidromous shrimps since in Puerto Rico they are the dominant consumers on mountainous streams. a) To understand the effects of dams on freshwater shrimps we did a literature review focused on Puerto Rico and other tropical countries. b) To determine the effects of drought on shrimps we analyzed weekly rainfall and shrimp data from the Luquillo LTER, from shrimps sampled at Quebrada Prieta from 1993 to 2016. Dams primarily affected migratory species by disrupting stream connectivity and producing a “bottleneck” effect. Dams without spillway inhibited shrimp migration. Shrimp densities and pools had a strong association. Droughts did not have lasting effects influence on shrimp abundance and species richness at pools studied at 400 m asl. Future directions are to understand how abundance and assembly changed within drought years.
- Connectivity
- Habitat
- Organic matter
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Presenters/Authors
Kevin Soto
(), Interamerican University of Puerto Rico, Arecibo Campus, nivek0100@gmail.com;
ASHA DISCLOSURE:
Financial -
Nonfinancial -