The Southwestern Pond Turtle (Actinemys pallida) in Baja California, Mexico: New localities and persistent threats
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Abstract
The Southwestern Pond Turtle (Actinemys pallida), the only native freshwater turtle in Baja California, is experiencing alarming population declines, echoing global patterns observed in freshwater turtles. We conducted comprehensive field surveys across the major drainages of northwestern Baja California to delineate the species' current distribution, identify critical threats to its persistence, and provide guidance for conservation actions. We documented the continued presence of A. pallida at 27 sites across 10 watersheds, ranging from sea level to 1,525 m in elevation. These include nine historically known sites and 18 newly recorded localities. The most pervasive threats we identified were habitat degradation, the proliferation of invasive aquatic species, and unsustainable water extraction. Despite these pressures, our findings confirm that A. pallida still occupies much of its historical range. However, urgent ecological research is needed to inform evidence-based strategies that ensure the long-term viability of this imperiled species.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | The Southwestern Pond Turtle (Actinemys pallida) in Baja California, Mexico: New localities and persistent threats |
| Series title | Bulletin of the Southern California Academy of Sciences |
| DOI | 10.3160/0038-3872-124.2.67 |
| Volume | 124 |
| Issue | 2 |
| Year Published | 2025 |
| Language | English |
| Publisher | Southern California Academy of Sciences |
| Contributing office(s) | Western Ecological Research Center |
| Description | 13 p. |
| First page | 67 |
| Last page | 79 |
| Country | Mexico |
| State | Baja California |