Near Shore Ecology (NSE) Study - Revision history

Cellsworth at 20:08, 9 September 2026

2026-09-09T20:08:42Z

Cellsworth at 15:54, 7 October 2021

2021-10-07T15:54:56Z

Cellsworth at 15:50, 7 October 2021

2021-10-07T15:50:32Z

Cellsworth at 16:37, 2 March 2021

2021-03-02T16:37:55Z

Cellsworth at 16:37, 2 March 2021

2021-03-02T16:37:11Z

Cellsworth at 16:31, 2 March 2021

2021-03-02T16:31:03Z

Cellsworth at 16:25, 2 March 2021

2021-03-02T16:25:47Z

Cellsworth at 21:56, 23 January 2019

2019-01-23T21:56:08Z

Cellsworth at 23:20, 9 January 2019

2019-01-09T23:20:09Z

Cellsworth at 16:10, 8 January 2019

2019-01-08T16:10:15Z

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-*[http://wec.ufl.edu/floridarivers/NSE.htm University of Florida NSE website]
+*[https://archives.waterinstitute.ufl.edu/research/projects_detail.asp?EcoSystem=Watersheds&Contract=71502 University of Florida NSE website]
 *[http://gcdamp.com/index.php?title=Low_Summer_Flow_Experiment Low Summer Flow Experiments ]
 *[http://gcdamp.com/index.php?title=The_2000_Low_Summer_Steady_Flow_Experiment The 2000 Low Summer Steady Flow Experiment]
@@ Line 110: / Line 110: @@
 *[http://dx.plos.org/10.1371/journal.pone.0084235 K. E. Limburg, T. A Hayden, W. E. Pine, III, M. D. Yard, R. Kozdon, and J. W. Valley.  2013.  Of Travertine and Time: Otolith chemistry and microstructure detect provenance and demography of endangered humpback chub in Grand Canyon USA.  PLoS One 8(12), E84235]
-*[http://wec.ufl.edu/floridarivers/NSE/Hayden%20et%20al.%202012.pdf Hayden, T. A., K. E. Limburg, and W. E. Pine, III.  2012.  Using Otolith Chemistry Tags and Growth Patterns to Distinguish Movements and Provenance of Native Fish in Grand Canyon.  River Research and Applications. DOI 10.1002/rra.2627]
+*[https://onlinelibrary.wiley.com/doi/epdf/10.1002/rra.2627 Hayden, T. A., K. E. Limburg, and W. E. Pine, III.  2012.  Using Otolith Chemistry Tags and Growth Patterns to Distinguish Movements and Provenance of Native Fish in Grand Canyon.  River Research and Applications. DOI 10.1002/rra.2627]
-*[http://wec.ufl.edu/floridarivers/NSE/Gerig_B.pdf Thesis: Brandon Gerig - "Site occupancy and habitat selection of endangered humpback chub during experimental flow releases from Glen Canyon Dam in the Colorado River in Grand Canyon, Arizona"]
+*[https://ufdc.ufl.edu/UFE0044148/00001/pdf Thesis: Brandon Gerig - "Site occupancy and habitat selection of endangered humpback chub during experimental flow releases from Glen Canyon Dam in the Colorado River in Grand Canyon, Arizona"]
-*[http://wec.ufl.edu/floridarivers/NSE/Dodrill_M.pdf Thesis: Mike Dodrill - "Habitat relationships of small bodied fish in the Grand Canyon reach of the Colorado River, Arizona: Emphasis on native fish and evaluation of backwater habitats"]
+*[https://ufdc.ufl.edu/UFE0044372/00001/pdf Thesis: Mike Dodrill - "Habitat relationships of small bodied fish in the Grand Canyon reach of the Colorado River, Arizona: Emphasis on native fish and evaluation of backwater habitats"]
-*[http://wec.ufl.edu/floridarivers/NSE/Finch_C.pdf Thesis: Colton Finch - "Manipulation of fish vital rates through ecosystem experimentation in a regulated river"]
+*[https://ufdc.ufl.edu/UFE0045079/00001/pdf Thesis: Colton Finch - "Manipulation of fish vital rates through ecosystem experimentation in a regulated river"]
-*[http://wec.ufl.edu/floridarivers/NSE/15GrandCanyonEcologyStudy.pdf Results of the Grand Canyon Near-shore Ecology study (NSE)]
+*[https://archives.waterinstitute.ufl.edu/research/projects_detail.asp?EcoSystem=Watersheds&Contract=71502 Results of the Grand Canyon Near-shore Ecology study (NSE)]
-*[http://wec.ufl.edu/floridarivers/NSE/Pine%20NSE%20Final%20Report%20August%2027%202013.pdf 2009-11 Near-shore Ecology study (NSE) final report]
+*[https://archives.waterinstitute.ufl.edu/news/publications/downloads/PineNSEGrCanyon2009report.pdf Nearshore Ecology (NSE) of Grand Canyon Fish 2011 Progress Report]
-*[http://wec.ufl.edu/floridarivers/NSE/NSE%202011%20progress%20report.pdf Nearshore Ecology (NSE) of Grand Canyon Fish 2011 Progress Report]
+*[https://archives.waterinstitute.ufl.edu/news/publications/downloads/PineNSEGrCanyon2010report.pdf Nearshore Ecology (NSE) of Grand Canyon Fish 2010 Progress Report]
-*[http://wec.ufl.edu/floridarivers/NSE/NSE%202010%20progress%20report.pdf Nearshore Ecology (NSE) of Grand Canyon Fish 2010 Progress Report]
+*[https://archives.waterinstitute.ufl.edu/news/publications/downloads/PineNSEGrCanyon2009report.pdf Nearshore Ecology (NSE) of Grand Canyon Fish 2009 Progress Report]
-*[http://wec.ufl.edu/floridarivers/NSE/NSE%202009%20report.pdf Nearshore Ecology (NSE) of Grand Canyon Fish 2009 Progress Report]
 [[File:NSE findings.jpg|center|px400]]

@@ Line 46: / Line 46: @@
 == Background==
-Glen Canyon Dam is operated primarily as a load-following hydropower facility, increasing and decreasing dam discharge to match power demand. This periodic “flushing” of the river reduces the residence time of water as well as the availability of certain shoreline habitat types. In contrast, steady flows can increase the retention time of water in littoral areas such as backwaters and low-angle shorelines, and if discharge volume and ambient temperature are appropriate, can locally increase water temperatures. The NSE project evaluated experimental steady flows that occurred from 1 September- 31 October in each year 2009-2011. This study took place between river km 102-106 just downstream of the confluence of the mainstem Colorado and Little Colorado rivers where most prior research on humpback chub in Grand Canyon has occurred. The timing and magnitude of the steady flow experiment was developed by resource managers independent of the NSE team. Experimental flow regimes were about 10% of the unregulated (pre-Glen Canyon Dam) annual fluctuations.
+Glen Canyon Dam is operated primarily as a load-following hydropower facility, increasing and decreasing dam discharge to match power demand. This periodic “flushing” of the river reduces the residence time of water as well as the availability of certain shoreline habitat types. In contrast, steady flows can increase the retention time of water in littoral areas such as backwaters and low-angle shorelines, and if discharge volume and ambient temperature are appropriate, can locally increase water temperatures. The NSE project evaluated experimental steady flows that occurred from 1 September- 31 October in each year 2009-2011 (the actual Fall Steady Flow Experiment occurred over 5 years from 2008-2012). This study took place between river km 102-106 just downstream of the confluence of the mainstem Colorado and Little Colorado rivers where most prior research on humpback chub in Grand Canyon has occurred. The timing and magnitude of the steady flow experiment was developed by resource managers independent of the NSE team. Experimental flow regimes were about 10% of the unregulated (pre-Glen Canyon Dam) annual fluctuations.
 Prior to the NSE project, our understanding of juvenile humpback chub ecology in the mainstem Colorado River was deficient compared with our knowledge of adult humpback chub primarily because of limited sampling of mainstem habitat for juvenile life stages.  The NSE project developed a sampling and analytical framework to directly assess juvenile humpback chub survival, abundance, individual growth, and habitat use.  These analyses used spatially referenced mark-recapture experiments with multiple gear types and determined provenance (birth river) through otolith microchemistry.  This direct assessment of key vital rates complements indirect approaches used to estimate survival through population modeling efforts. For example, age-structured-mark-recapture (ASMR, Coggins et al. 2006) reconstructs juvenile abundance and survival through time from adult population numbers (estimated from mark-recapture) and assumes survival relationships based on life-history characteristics and growth rates.  In contrast, the NSE project directly estimates juvenile fish population metrics in terms of abundance, survival, growth, or habitat use, which is useful for rapidly assessing how juvenile humpback chub respond to management actions such as experimental flows.  [http://wec.ufl.edu/floridarivers/NSE.htm]
@@ Line 165: / Line 165: @@
 * *Costs of the Fall Steady Flow could not be determined individually from the Spring 2008 HFE because water was reallocated for both experiments in that year.
-*[Financial Analysis of Experimental Releases Conducted at Glen Canyon Dam during Water Years 2006 through 2010 https://ceeesa.es.anl.gov/pubs/70776.pdf]
+*[https://ceeesa.es.anl.gov/pubs/70776.pdf Financial Analysis of Experimental Releases Conducted at Glen Canyon Dam during Water Years 2006 through 2010 ]
-*[https://publications.anl.gov/anlpubs/2012/07/73616.pdf Financial Analysis of Experimental Releases Conducted at Glen Canyon Dam during Water Year 2011]
+*[https://publications.anl.gov/anlpubs/2012/07/73616.pdf Financial Analysis of Experimental Releases Conducted at Glen Canyon Dam during Water Year 2011  ]
 *[[Media:Financial Analysis of Experimental Flows Vol4 WY12.pdf| Financial Analysis of Experimental Releases Conducted at Glen Canyon Dam during Water Year 2012]]
 *[[Media:Financial Analysis of Experimental Flows Vol5 WY13 Final.pdf| Financial Analysis of Experimental Releases Conducted at Glen Canyon Dam during Water Year 2013]]

@@ Line 156: / Line 156: @@
 |style="color:#000;"|
-The cost to hydropower due to the 2011 Fall Steady Flow Experiment was $375k.
+The cost to hydropower due to the Fall Steady Flow Experiments were:
 *[[Media:Financial Analysis of Experimental Flows Vol4 WY12.pdf| Financial Analysis of Experimental Releases Conducted at Glen Canyon Dam during Water Year 2012]]
-*[[Media:Financial Analysis of Experimental Flows Vol5 WY13 Final.pdf| Financial Analysis of Experimental Releases Conducted at Glen Canyon Dam during Water Year 2013]] This includes the hydropower costs associated with the 2012 HFE.
+*[[Media:Financial Analysis of Experimental Flows Vol5 WY13 Final.pdf| Financial Analysis of Experimental Releases Conducted at Glen Canyon Dam during Water Year 2013]]
 |-

@@ Line 104: / Line 104: @@
 *[http://wec.ufl.edu/floridarivers/NSE/Gerig_et_al_2013_Accepted.pdf Gerig, B. S., M. J. Dodrill, and W. E. Pine, III.  In-Press.  Habitat Selection and Movement of Adult Humpback Chub in the Colorado River in Grand Canyon during an Experimental Steady Flow Release.  North American Journal of Fisheries Management]
-*[[Media:Finch_2013_HBC_Growth_NSE_(1)| Finch, C., W. E. Pine, III, K. E. Limburg. 2013. Do hydropeaking flows alter juvenile fish growth rates? A test with juvenile humpback chub in the Colorado River. River Research and Applications. DOI 10.1002/rra.2725]]
+*[[Media:Finch_2013_HBC_Growth_NSE_(1).pdf| Finch, C., W. E. Pine, III, K. E. Limburg. 2013. Do hydropeaking flows alter juvenile fish growth rates? A test with juvenile humpback chub in the Colorado River. River Research and Applications. DOI 10.1002/rra.2725]]
 *Dodrill, M. J. C. B. Yackulic, B. S. Gerig, W. E. Pine, III, J. Korman and C. Finch. 2014. Do management actions to restore rare habitat benefit native fish conservation? Distribution of juvenile native fish among shoreline habitats of the Colorado River.  River Research and Applications.  DOI 10.1002/rra/2842.

@@ Line 104: / Line 104: @@
 *[http://wec.ufl.edu/floridarivers/NSE/Gerig_et_al_2013_Accepted.pdf Gerig, B. S., M. J. Dodrill, and W. E. Pine, III.  In-Press.  Habitat Selection and Movement of Adult Humpback Chub in the Colorado River in Grand Canyon during an Experimental Steady Flow Release.  North American Journal of Fisheries Management]
-*[[Media:Finch 2013 HBC Growth NSE.pdf| Finch, C., W. E. Pine, III, K. E. Limburg. 2013. Do hydropeaking flows alter juvenile fish growth rates? A test with juvenile humpback chub in the Colorado River. River Research and Applications. DOI 10.1002/rra.2725]]
+*[[Media:Finch_2013_HBC_Growth_NSE_(1)| Finch, C., W. E. Pine, III, K. E. Limburg. 2013. Do hydropeaking flows alter juvenile fish growth rates? A test with juvenile humpback chub in the Colorado River. River Research and Applications. DOI 10.1002/rra.2725]]
 *Dodrill, M. J. C. B. Yackulic, B. S. Gerig, W. E. Pine, III, J. Korman and C. Finch. 2014. Do management actions to restore rare habitat benefit native fish conservation? Distribution of juvenile native fish among shoreline habitats of the Colorado River.  River Research and Applications.  DOI 10.1002/rra/2842.

@@ Line 127: / Line 127: @@
 '''2013'''
-*[https://www.usbr.gov/uc/rm/amp/amwg/mtgs/13feb20/Attach_07b.pdf Humpback Chub and Non-native Fish Control Update ]
+*[https://www.usbr.gov/uc/progact/amp/amwg/2013-02-20-amwg-meeting/Attach_07b.pdf Humpback Chub and Non-native Fish Control Update ]
-*[https://www.usbr.gov/uc/rm/amp/amwg/mtgs/13feb20/Attach_07b.pdf Overview of the Near Shore Ecology / Fall Steady Flows study]
+*[https://www.usbr.gov/uc/progact/amp/twg/2013-01-24-twg-meeting/Attach_07a.pdf Summary of Near Shore Ecology (NSE) Project Findings]
-*[https://www.usbr.gov/uc/rm/amp/twg/mtgs/13jan24/Attach_07a.pdf Summary of Near Shore Ecology (NSE) Project Findings]
 '''2012'''
@@ Line 136: / Line 135: @@
 '''2010'''
-*[https://www.usbr.gov/uc/rm/amp/twg/mtgs/10nov15/Attach_09a.pdf Study Plan--Biological Resource Responses to Fall Steady Experimental Flows Released from Glen Canyon Dam, 2009-12 (Planning Document--February 2010)]
+*[https://www.usbr.gov/uc/progact/amp/twg/2010-11-15-twg-meeting/Attach_09a.pdf Study Plan--Biological Resource Responses to Fall Steady Experimental Flows Released from Glen Canyon Dam, 2009-12 (Planning Document--February 2010)]
-*[https://www.usbr.gov/uc/rm/amp/twg/mtgs/10nov15/Attach_09b.pdf Fall Steady Flows Comment Table; Attachment 9c: Science Plan for Fall Steady Flows]
+*[https://www.usbr.gov/uc/progact/amp/twg/2010-11-15-twg-meeting/Attach_09b.pdf Fall Steady Flows Comment Table; Attachment 9c: Science Plan for Fall Steady Flows]
-*[https://www.usbr.gov/uc/rm/amp/amwg/mtgs/10aug24/Attach_03d.pdf Findings from Ecosystem and NSE Modeling Workshops, March 2010]
+*[https://www.usbr.gov/uc/progact/amp/amwg/2010-08-24-amwg-meeting/Attach_03d.pdf Findings from Ecosystem and NSE Modeling Workshops, March 2010]
-*[https://www.usbr.gov/uc/rm/amp/amwg/mtgs/10aug24/Attach_15a.pdf Near-Shore Ecology Update]
+*[https://www.usbr.gov/uc/progact/amp/amwg/2010-08-24-amwg-meeting/Attach_15a.pdf Near-Shore Ecology Update]
-*[https://www.usbr.gov/uc/rm/amp/twg/mtgs/10jun29/Attach_03.pdf Letter from the Bureau of Reclamation to the Pueblo of Zuni dated June 15, 2010, Subject: Nearshore Ecology Study Research Project (Action Within 30 Days)]
+*[https://www.usbr.gov/uc/progact/amp/twg/2010-06-29-twg-meeting/Attach_03.pdf Letter from the Bureau of Reclamation to the Pueblo of Zuni dated June 15, 2010, Subject: Nearshore Ecology Study Research Project (Action Within 30 Days)]
-*[https://www.usbr.gov/uc/rm/amp/twg/mtgs/10mar15/Attach_08.pdf Science Plan for Fall Steady Flows PPT]
+*[https://www.usbr.gov/uc/progact/amp/twg/2010-03-15-twg-meeting/Attach_08.pdf Science Plan for Fall Steady Flows PPT]
-*[https://www.usbr.gov/uc/rm/amp/amwg/mtgs/10feb03/Attach_22.pdf AIF: 1) GCMRC Updates; 2) HBC Comprehensive Plan Implementation Ad Hoc Group Update]
+*[https://www.usbr.gov/uc/progact/amp/amwg/2010-02-03-amwg-meeting/Attach_22.pdf 1) GCMRC Updates; 2) HBC Comprehensive Plan Implementation Ad Hoc Group Update]
 '''2009'''
-*[https://www.usbr.gov/uc/rm/amp/twg/mtgs/09sep29/Attach_10c.pdf Memo from Matthew Andersen, Subj: Fall Steady Flows Science Plan and Comment Table]
+*[https://www.usbr.gov/uc/progact/amp/twg/2009-09-29-twg-meeting/Attach_10c.pdf Memo from Matthew Andersen, Subj: Fall Steady Flows Science Plan and Comment Table]
-*[https://www.usbr.gov/uc/rm/amp/twg/mtgs/09sep29/Attach_10a.pdf Nearshore Ecology of Juvenile Native Fish in Grand Canyon: Central Objectives and Key Challenges PPT]
+*[https://www.usbr.gov/uc/progact/amp/twg/2009-09-29-twg-meeting/Attach_10a.pdf Nearshore Ecology of Juvenile Native Fish in Grand Canyon: Central Objectives and Key Challenges PPT]
 *[https://www.usbr.gov/uc/progact/amp/amwg/2009-08-12-amwg-meeting/Attach_05f.pdf Fall Steady Flow Experiment Science Plan]
-*[https://www.usbr.gov/uc/rm/amp/twg/mtgs/09jun22/Attach_07c.pdf Near Shore Ecology of Grand Canyon Fish, Funding Opportunity]
+*[https://www.usbr.gov/uc/progact/amp/twg/2009-06-22-twg-meeting/Attach_07c.pdf Near Shore Ecology of Grand Canyon Fish, Funding Opportunity]
-*[https://www.usbr.gov/uc/rm/amp/amwg/mtgs/09apr29/Attach_05c.pdf Science Plan for Fall Steady Flows and Near Shore Ecology PPT]
+*[https://www.usbr.gov/uc/progact/amp/amwg/2009-04-29-amwg-meeting/Attach_05c.pdf Science Plan for Fall Steady Flows and Near Shore Ecology PPT]
-*[https://www.usbr.gov/uc/rm/amp/twg/mtgs/09mar16/Attach_05.pdf Grand Canyon Monitoring and Research Center updates by Program Managers]
+*[https://www.usbr.gov/uc/progact/amp/twg/2009-03-16-twg-meeting/Attach_05.pdf Grand Canyon Monitoring and Research Center updates by Program Managers]
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