Difference between revisions of "FOOD BASE"
From Glen Canyon Dam AMP
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| − | 2016 | + | '''2016''' |
| − | + | *[[Media:Kennedy 2016 HydropowerEPT.pdf| Flow Management for Hydropower Extirpates Aquatic Insects, Undermining River Food Webs]] | |
| − | * | + | *[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR16_Muehlbauer.pdf Food availability in the Little Colorado River over space and time] |
| − | * | + | *A Life History Bottleneck for Aquatic Insects Arising from Load Following |
| − | 2015 | + | '''2015''' |
| − | + | *[http://www.usbr.gov/uc/rm/amp/twg/mtgs/15jan20/Attach_11.pdf Invertebrate drift in Glen Canyon 2007-2013] | |
| − | 2014 | + | '''2014''' |
| − | + | *[http://www.usbr.gov/uc/rm/amp/twg/mtgs/14jan30/Attach_05a.pdf Foodbase Enhancement Suggestions from Federation of Fly Fishers] | |
| − | * | + | *[http://www.usbr.gov/uc/rm/amp/twg/mtgs/14jan30/Attach_05b.pdf Foodbase Findings] |
| − | * | + | *[http://www.usbr.gov/uc/rm/amp/twg/mtgs/14jan30/AR_Kennedy_Foodweb_Update.pdf Foodbase Update] |
| − | 2013 | + | '''2013''' |
| − | + | *[http://www.redorbit.com/news/science/1112927299/lessons-from-grand-canyon-dams-destabilize-river-food-webs-082013/ Lessons From The Grand Canyon: Dams Destabilize River Food Webs] | |
| − | * | + | *[http://www.gcmrc.gov/about/foodbase/Cross%20et%20al._EM_2013.pdf Cross et al. 2013: Food-web dynamics in a large river discontinuum] |
| − | * | + | *[http://pubs.usgs.gov/fs/2013/3039/fs2013-3039.pdf USGS fact sheet: Native and nonnative fish populations of the Colorado River are food limited - Evidence from new food web analyses] |
| − | * | + | *[http://www.gcmrc.gov/about/foodbase/WellardKelley_et%20al.%202013.pdf Macroinvertebrate diets reflect tributary inputs and turbidity-driven changes in food availability in the Colorado River downstream of Glen Canyon Dam] |
| − | * | + | *[http://www.gcmrc.gov/about/foodbase/Kennedy%20et%20al.%20FWB%20proofs.pdf Kennedy et al. 2013: The relation between invertebrate drift and two primary controls, discharge and benthic densities, in a large regulated river] |
| − | 2012 | + | '''2012''' |
| − | + | *[http://www.gcmrc.gov/about/foodbase/Hall%20et%20al.%202012.pdf Air –water oxygen exchange in a large whitewater river] | |
| − | * | + | *[http://www.usbr.gov/uc/rm/amp/amwg/mtgs/01apr12/Attach_08a.pdf Temperatures, TCD, and Food Base] |
| − | 2011 | + | '''2011''' |
| − | + | *[http://www.gcmrc.gov/about/foodbase/Cross%20et%20al.%202011_EA.pdf Ecosystem ecology meets adaptive management: Food web response to a controlled flood on the Colorado River, Glen Canyon] | |
| − | * | + | *[http://www.gcmrc.gov/about/foodbase/Donner_Thesis%202011.pdf Secondary production rates, consumption rates, and trophic basis of production of fishes in the Colorado River, Grand Canyon, AZ: An assessment of potential competition for food] |
| − | * | + | *[http://http://www.gcmrc.gov/about/foodbase/Zahn_Thesis_2011.pdf Diet overlap and competition among native and non-native small-bodied fishes in the Colorado River, Arizona] |
| − | 2010 | + | '''2010''' |
| − | + | *[http://www.gcmrc.gov/about/foodbase/Wellard%20Kelly_Thesis%202010.pdf Resource composition and macroinvertebrate resource consumption in the Colorado River below Glen Canyon Dam] | |
| − | * | + | *[http://pubs.usgs.gov/of/2010/1031/of2010-1031.pdf Short-Term Effects of the 2008 High-Flow Experiment on Macroinvertebrates in Colorado River Below Glen Canyon Dam, Arizona] |
| − | * | + | *[http://pubs.usgs.gov/of/2010/1075/of2010-1075.pdf Basal Resources in Backwaters of the Colorado River Below Glen Canyon Dam—Effects of Discharge Regimes and Comparison with Mainstem Depositional Environments] |
| − | * | + | *[http://www.gcmrc.gov/about/foodbase/Hall%20et%20al.%20from%20sir2010-5135.pdf Aquatic production and carbon flow in the Colorado River Pages 105-112 in Proceedings of the Colorado River Basin Science and Resource Management Symposium, November 18–20, 2008, Scottsdale, Arizona] |
| − | * | + | *[http://www.gcmrc.gov/about/foodbase/Cross%20et%20al.%202010.pdf Invasion and production of New Zealand mud snails in the Colorado River, Glen Canyon] |
| − | 1999 | + | '''1999''' |
| − | + | *[http://www.gcmrc.gov/library/reports/biological/Foodbase/Oberlin1999.pdf Watershed influence on the macroinvertebrate fauna of ten major tributaries of the Colorado River through Grand Canyon, Arizona] | |
| − | 1981 | + | '''1981''' |
| − | + | *[http://www.gcmrc.gov/library/reports/GrandCanyon/Carothers1981.pdf A survey of the aquatic flora and fauna of the Grand Canyon] | |
| − | 1959 | + | '''1959''' |
| − | + | *[http://core.tdar.org/document/92630/ecological-studies-of-the-flora-and-fauna-in-glen-canyon Ecological Studies of the Flora and Fauna in Glen Canyon (Woodbury 1959)] | |
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Revision as of 19:22, 13 July 2016
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The Aquatic Food Base below Glen Canyon Dam The Colorado River below Glen Canyon Dam has been altered by dam-induced modifications to the river’s flow, temperature, and sediment supply. Nonnative species have also changed the natural system. Nonnative fish are thought to prey on and compete with native fish, including the endangered humpback chub (Gila cypha). These impacts have likely changed both the amount and sources of energy that fuel the aquatic food web and the flows of energy within the food web. Installation of the dam created a relatively clear, cool aquatic environment below the dam that now allows aquatic plants to capture the sun’s energy, and they in turn are now consumed by a few species, including scuds (Gammarus lacustris), midges (Family: Chironomidae), blackflies (Simulium arcticum), and New Zealand mudsnails (Potamopyrgus antipodarum). The first three species can provide food for both native and nonnative fishes, but fish cannot digest the New Zealand mudsnail. |
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