Difference between revisions of "Brown Trout"
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*[http://gcdamp.com/index.php?title=Trout_Reduction_Efforts Trout Reduction Efforts] | *[http://gcdamp.com/index.php?title=Trout_Reduction_Efforts Trout Reduction Efforts] | ||
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'''2018''' | '''2018''' | ||
*[https://doi.org/10.3133/ofr20181069 Runge et al., 2018, Brown trout in the Lees Ferry reach of the Colorado River—Evaluation of causal hypotheses and potential interventions: USGS Open-File Report] | *[https://doi.org/10.3133/ofr20181069 Runge et al., 2018, Brown trout in the Lees Ferry reach of the Colorado River—Evaluation of causal hypotheses and potential interventions: USGS Open-File Report] | ||
− | *[https://www.usbr.gov/uc/ | + | *[https://www.usbr.gov/uc/progact/amp/amwg/2018-02-14-amwg-meeting/Attach_02.pdf Brown Trout in Lees Ferry: Evaluation of Causal Hypotheses and Potential Interventions PPT] |
− | *[https://www.usbr.gov/uc/ | + | *[https://www.usbr.gov/uc/progact/amp/twg/2018-01-25-twg-meeting/AR16.pdf Brown Trout Telemetry at Lees Ferry and Grand Canyon, Arizona PPT] |
− | *[https://www.usbr.gov/uc/ | + | *[https://www.usbr.gov/uc/progact/amp/twg/2018-01-25-twg-meeting/Attach_06.pdf Brown Trout in Lees Ferry: Evaluation of Causal Hypotheses and Potential Interventions ] |
'''2017''' | '''2017''' | ||
− | *[https://www.usbr.gov/uc/ | + | *[https://www.usbr.gov/uc/progact/amp/amwg/2017-02-15-amwg-meeting/Attach_04.pdf Lees Ferry Trout Fishery Status ] |
− | *[https://www.usbr.gov/uc/ | + | *[https://www.usbr.gov/uc/progact/amp/twg/2017-01-26-twg-meeting/AR23_Muehlbauer.pdf Brown Trout in Glen Canyon: Insights from Two Expert Elicitation Surveys ] |
− | *[https://www.usbr.gov/uc/ | + | *[https://www.usbr.gov/uc/progact/amp/twg/2017-01-26-twg-meeting/AR22_Healy.pdf Bright Angel Brown Trout Removal and Humpback Chub Translocations ] |
− | *[https://www.usbr.gov/uc/ | + | *[https://www.usbr.gov/uc/progact/amp/twg/2017-01-26-twg-meeting/A10_Healy.pdf Brown Trout Management Considerations: An Update ] |
− | *[https://www.usbr.gov/uc/ | + | *[https://www.usbr.gov/uc/progact/amp/twg/2017-01-26-twg-meeting/AR21_Rogowski.pdf System Wide Monitoring ] |
'''2016''' | '''2016''' | ||
− | *[ | + | *[https://www.usbr.gov/uc/progact/amp/amwg/2016-08-24-amwg-meeting/Attach_07a.pdf Grand Canyon Monitoring and Research Center Science Updates (BO Compliance, Trout Updates, Green Sunfish, Fisheries PEP, Partners in Science)] |
− | *[ | + | *[https://www.usbr.gov/uc/progact/amp/twg/2016-02-26-twg-meeting/Attach_06.pdf Brown Trout Update Lees Ferry] |
− | *[ | + | *[https://www.usbr.gov/uc/progact/amp/twg/2016-02-26-twg-meeting/AR21_Nelson.pdf Bright Angel Creek Non-Native Trout Reduction, Grand Canyon National Park] |
'''2015''' | '''2015''' | ||
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'''2013''' | '''2013''' | ||
− | *[https://www.usbr.gov/uc/ | + | *[https://www.usbr.gov/uc/progact/amp/amwg/2013-08-08-amwg-meeting/Attach_08.pdf Science Update: Fisheries] |
− | *[ | + | *[https://www.usbr.gov/uc/progact/amp/twg/2013-01-24-twg-meeting/8_Healy.pdf Diets and Food Availability of Nonnative Trout in Bright Angel Creek, Grand Canyon: Implications for Native Fish Conservation] |
− | *[ | + | *[https://www.usbr.gov/uc/progact/amp/twg/2013-01-24-twg-meeting/13_Healy.pdf Nonnative fish control in GCNP tributaries] |
'''2011''' | '''2011''' |
Revision as of 17:41, 17 January 2019
Brown trout caught at the LCR during the 2013 summer Natal Origins trip |
Brown TroutBrown trout are native to Europe and were introduced to tributaries in the Grand Canyon in the 1920s. They are capable of withstanding slightly higher temperature than rainbow trout. Unlike most other trout species, brown trout spawn in the late fall. Their spawning behavior, however, is similar to other trout species. Like rainbow trout, young brown trout feed on aquatic and terrestrial insects and invertebrates but brown trout are more apt to switch to eating other fish as they get bigger. The rainbow trout found in Grand Canyon are more likely to continue to eat mostly insects and invertebrates even as adults. [1] [1] Studies have shown that rainbow trout and native fish like humpback chub often have a difficult time persisting in the presence of a large population of brown trout. [2] [3] [4] Desired Future Condition for the Lees Ferry Trout FisheryA high quality trout fishery in GCNRA, as further described in the Recreation DFC that does not adversely affect the native aquatic community in GCNP. |
Rainbow Trout | Brown Trout |
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