Difference between revisions of "Translocation Projects"

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! <h2 style="margin:0; background:#cedff2; font-size:120%; font-weight:bold; border:1px solid #a3bfb1; text-align:left; color:#000; padding:0.2em 0.4em;">Updates</h2>
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! <h2 style="margin:0; background:#cedff2; font-size:120%; font-weight:bold; border:1px solid #a3bfb1; text-align:left; color:#000; padding:0.2em 0.4em;">Projects</h2>
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==Little Colorado River above Chute Falls (monitoring: May or June)==
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==Havasu Creek==
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==Shinumo Creek [https://www.usbr.gov/uc/rm/amp/twg/mtgs/14oct28/Attach_11.pdf]==
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Included as a Conservation measure in the 2008 and 2011 Biological <br>
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===Objectives: ===
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*Primary: Develop second spawning population
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*Provide rearing (grow-out) opportunities, augmentation of mainstem aggregations
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===Project History===
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Translocated 1,102 humpback chub (total):
 +
*2009: 302
 +
*2010: 300
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*2011: 300
 +
*2013: 200
 +
June 2014 population estimate: ≈125 to 190 individuals (preliminary; all years represented)
 +
 
 +
===Results===
 +
*Meeting Objectives for rearing/”grow-out”
 +
*Annual growth greater than in the mainstem Colorado River but less than in the LCR 2 out of 3 years (2013-14 results pending)
 +
*Large portion of mainstem captures at the mouth of Shinumo are translocated fish
 +
*No reproduction (but fish were still young)
 +
 
 +
===Galahad Point Fire – May-July 2014 [https://www.usbr.gov/uc/rm/amp/twg/mtgs/14oct28/Attach_11.pdf]===
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Shinumo Creek flooding (containing ash) reported in July and August
 +
*PIT tag antenna destroyed in July
 +
*>99% decline in fish, overall
 +
*High density of rainbow trout in Merlin Abyss Creek (½ mile of undamaged habitat)
 +
*Bluehead sucker and humpback chub believed to be extirpated
 +
*Significant channel alteration, pools filled
 +
*80-90% loss of riparian vegetation
 +
 
 +
===Next Steps===
 +
*Remove remaining trout in Merlin Abyss
 +
*Monitor habitat recovery
 +
*In 3-5 years restore native fish community throughout watershed (humpback chub, speckled dace, bluehead sucker)
 +
 
 +
==Bright Angel Creek (proposed; following [https://www.nps.gov/grca/learn/nature/trout-reduction.htm NPS trout reduction])==
 +
 
 +
==Havasu Creek above Beaver Falls  (proposed; Conservation Measure)==
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 +
==Mainstem translocations in Western Grand Canyon (proposed)==
  
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==Mainstem translocations at the LCR (proposed; Conservation Measure)==
  
 
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[http://gcdamp.com/index.php?title=Humpback_Chub_Page The Humpback Chub Page]
 
[http://gcdamp.com/index.php?title=Humpback_Chub_Page The Humpback Chub Page]
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! <h2 style="margin:0; background:#cedff2; font-size:120%; font-weight:bold; border:1px solid #a3b0bf; text-align:left; color:#000; padding:0.2em 0.4em;">Projects</h2>
 
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*Little Colorado River above Chute Falls (monitoring: May or June)
 
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*Havasu Creek
 
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*Havasu Creek above Beaver Falls  (proposed; Conservation Measure)
 
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*Shinumo Creek
 
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*Bright Angel Creek (proposed; following [https://www.nps.gov/grca/learn/nature/trout-reduction.htm NPS trout reduction])
 
−
*Mainstem translocations in Western Grand Canyon (proposed)
 
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*Mainstem translocations at the LCR (proposed; Conservation Measure)
 
  
 
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Revision as of 09:23, 5 May 2017



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Projects

Little Colorado River above Chute Falls (monitoring: May or June)

Havasu Creek

Shinumo Creek [1]

Included as a Conservation measure in the 2008 and 2011 Biological

Objectives:

  • Primary: Develop second spawning population
  • Provide rearing (grow-out) opportunities, augmentation of mainstem aggregations

Project History

Translocated 1,102 humpback chub (total):

  • 2009: 302
  • 2010: 300
  • 2011: 300
  • 2013: 200

June 2014 population estimate: ≈125 to 190 individuals (preliminary; all years represented)

Results

  • Meeting Objectives for rearing/”grow-out”
  • Annual growth greater than in the mainstem Colorado River but less than in the LCR 2 out of 3 years (2013-14 results pending)
  • Large portion of mainstem captures at the mouth of Shinumo are translocated fish
  • No reproduction (but fish were still young)

Galahad Point Fire – May-July 2014 [2]

Shinumo Creek flooding (containing ash) reported in July and August

  • PIT tag antenna destroyed in July
  • >99% decline in fish, overall
  • High density of rainbow trout in Merlin Abyss Creek (½ mile of undamaged habitat)
  • Bluehead sucker and humpback chub believed to be extirpated
  • Significant channel alteration, pools filled
  • 80-90% loss of riparian vegetation

Next Steps

  • Remove remaining trout in Merlin Abyss
  • Monitor habitat recovery
  • In 3-5 years restore native fish community throughout watershed (humpback chub, speckled dace, bluehead sucker)

Bright Angel Creek (proposed; following NPS trout reduction)

Havasu Creek above Beaver Falls (proposed; Conservation Measure)

Mainstem translocations in Western Grand Canyon (proposed)

Mainstem translocations at the LCR (proposed; Conservation Measure)

Links and Information

The Humpback Chub Page

Presentations and Papers

2017

2016

2015

2014

2013

2006

Other Stuff
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