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California golden trout and climate change: Is their stream habitat vulnerable to climate warming?Author(s): Kathleen Matthews; Sebastien Nussle
Source: In: Carline, R.F.; LoSapio, C., eds. Looking back and moving forward: Proceedings of the Wild Trout XI symposium. Bozeman, MT: Wild Trout Symposium: 51-57
Publication Series: Full Proceedings
Station: Pacific Southwest Research Station
PDF: Download Publication (396.31 KB)
DescriptionTo determine the current range of water temperatures in streams inhabited by California Golden Trout Oncorhynchus mykiss aguabonita, we deployed and monitored water temperature recording probes from 2008-2013 in three meadows in the Golden Trout Wilderness in the southern Sierra Nevada, California. Ninety probes were placed in three meadow streams: Mulkey Creek in Mulkey Meadow (2,838 m), South Fork Kern River in Ramshaw Meadows (2,640 m) and Golden Trout Creek in Big Whitney Meadow (2,963 m). Year-round water temperatures were successfully downloaded from seventy-nine probes along with measurements of stream shade. Water temperatures ranged from -0.1 to 26oC in Mulkey and Ramshaw meadows while in Big Whitney Meadow maximum temperature did not exceed 21oC. Temperatures were highest in late July through mid-September. Salmonids generally prefer cool water and become stressed when temperatures exceed 21o C, and water temperatures are predicted to increase with future climate warming. Thus, these results indicate that current stream temperatures in the Golden Trout Wilderness are high and may lack the resiliency to future warming.
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CitationMatthews, K.R.; Nussle, S.C. 2014. California golden trout and climate change: Is their stream habitat vulnerable to climate warming? In: Carline, R.F.; LoSapio, C., eds. Looking back and moving forward: Proceedings of the Wild Trout XI symposium. Bozeman, MT: Wild Trout Symposium: 51-57.
Keywordswater temperature, California golden trout, climate warming
- Water temperature, dissolved oxygen, flow, and shade measurements in the three stream sections of the Golden Trout Wilderness
- Diel movement and habitat use of the golden trout Oncorhynchus mykiss aguabonita in their native habitat on the Golden Trout Wilderness, California
- Golden trout habitat selection and movement patterns in degraded and recovering sites within the Golden Trout Wilderness, California
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