2023 Early Hearing Detection & Intervention Conference

March 5-7, 2023 • Cincinnati, OH

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5/25/2021 | 2:00 PM - 3:30 PM | ASSESSMENT OF THREATS TO ENDANGERED AND THREATENED FRESHWATER SPECIES IN CALIFORNIA, USA | Virtual Platform

ASSESSMENT OF THREATS TO ENDANGERED AND THREATENED FRESHWATER SPECIES IN CALIFORNIA, USA

Freshwater species are particularly vulnerable in Mediterranean climates, which have a long history of land-use change and hydrological modification. This study evaluates the threat levels of all federally and state endangered and threatened animal species in California, USA. The studied species include non-freshwater species, which serve as a point of comparison to investigate threat characteristics unique to freshwater systems. We used an established protocol to highlight the severity, spatial extent, and temporal scale of each species’ threats. We found that most federally and state endangered and threatened species have intermittent or obligate usage of freshwater ecosystems. In order of prominence, the most common threats are habitat loss, invasive species, climate change, and altered hydrology. Instances of organisms affected by altered hydrology despite being traditionally considered non-freshwater species highlight the congruence of freshwater biodiversity threat to overall biodiversity threat. Given the severity and extent of threats to freshwater systems, it is imperative to have a detailed understanding of the nature of threats, where those threats occur, and which taxonomic groups are affected to inform effective biodiversity conservation management.

Conservation
Aquatic–terrestrial biodiversity
Climate change

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Presenters/Authors

Gary Qin (), University of California, Riverside, gqin004@ucr.edu;