Branchinecta sandiegonensis
Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Branchinecta_sandiegonensis
Overview
A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.
The San Diego fairy shrimp faces severe habitat loss due to urban development and agricultural conversion throughout its limited range in southern California and Baja California. Remaining vernal pools are increasingly fragmented and degraded by invasive plant species, altered hydrology from surrounding development, and contamination from urban runoff and pesticides. Climate change poses an additional threat through altered precipitation patterns that could disrupt the precise seasonal flooding cycles essential for this species' reproduction.
Habitat
Branchinecta sandiegonensis inhabits seasonal vernal pools and ephemeral wetlands in coastal sage scrub and chaparral ecosystems of southern California and northern Baja California. These temporary pools fill with winter rains and dry completely by late spring, creating the specific hydroperiod conditions required for the species' life cycle.
