Boater preferences for beach characteristics downstream from Glen Canyon Dam, Arizona

Stewart, William P.; Larkin, Kevin; Orland, Brian; A, Anderson D

doi:10.1016/j.jenvman.2003.08.001

Cited by 15 publications

(12 citation statements)

References 15 publications

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“…This is exemplified on the Colorado River corridor in Grand Canyon National Park, USA (Figure ). In this landscape dominated by bedrock cliffs and steep vegetated talus slopes, open sandbars are an important recreational resource, relied upon as campsites and day‐use areas that are visited by more than 25,000 river runners, backpackers, and hikers annually (Kaplinski, Behan, Hazel, Parnell, & Fairley, ; Kearsley, Schmidt, & Warren, ; Stewart, Larkin, Orland, & Anderson, ).…”

Section: Introductionmentioning

confidence: 99%

“…While the downstream effects of dams on the hydrology, morphology, and riparian ecology of rivers have been documented extensively in the United States (Graf, ; Schmidt & Wilcock, ; Williams & Wolman, ), there are a growing number of studies that focus on downstream dam impacts to recreational resources. These studies include analysis of instream flow needs for boating (Rood, George, George, & Tymensen, ; Stafford, Fey, & Vaske, ; Whittaker & Shelby, ) and fishing (Whittaker, Shelby, & Abrams, ), boater preferences of downstream sandbar size and characteristics (Stewart et al, ), and river trip planning (Roberts, Stallman, & Bieri, ). This study aims to complement previous recreational research by focusing on the downstream geomorphic and vegetation impacts to sandbars used recreationally as campsites.…”

Section: Introductionmentioning

confidence: 99%

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Quantifying geomorphic and vegetation change at sandbar campsites in response to flow regulation and controlled floods, Grand Canyon National Park, Arizona

Hadley

Grams

Kaplinski

2018

River Research & Apps

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Sandbars along the Colorado River in Grand Canyon National Park, USA, are an important recreational resource used as campsites by over 25,000 river runners and hikers annually. The number and size of campsites decreased following the completion of Glen Canyon Dam in 1963 due to reductions of sediment that replenish sandbars and increases in vegetation cover caused by flow regulation. Campsite area continues to decrease despite the use of controlled floods to rebuild sandbars. We quantify the relative magnitude of factors that contribute to changes in campsite size, such as fluvial deposition and erosion, gullying, and vegetation expansion with analysis of four-band aerial imagery and digital elevation models. Campsite area declined by 37% between 2002 and 2016 (an average of 161 m 2 per site at long-term monitoring sites). Two drivers contributed to campsite area change: (a) short-term gains and losses associated with controlled floods and flood-deposit erosion and (b) long-term one-directional loss of campsite area caused by vegetation encroachment. There was more erosion and slope change at sites in critical reaches-sections of river where campsites are infrequent or in high demand-than in noncritical reaches. Vegetation continues to expand at campsites under flow regulation, particularly in noncritical reaches. Although controlled floods have contributed to short-term increases in sandbar size, long-term increases in campsite area have not occurred because of sandbar erosion between controlled floods and vegetation expansion. Manual vegetation removal may need to be considered in future management strategies.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Quantifying geomorphic and vegetation change at sandbar campsites in response to flow regulation and controlled floods, Grand Canyon National Park, Arizona

Hadley

Grams

Kaplinski

2018

River Research & Apps

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“…Whitewater recreationists often choose a river for recreational activities based on their preferences—which are general beliefs about desirable or ideal conditions (Altman 1975 )—for social, resource, and managerial characteristics of the riverscapes (Shelby and Heberlein 1986 ; Shelby 1980 ; Stewart et al 2003 ; Tarrant et al 1997 ). However, recreationists’ preferences are not homogenous (Ewert and Hollenhorst 1989 ) and may differ in recreation settings that provide different experiences.…”

Section: Introductionmentioning

confidence: 99%

“…Past research explored preferences related to social attributes that are measures of direct impacts from too much use, such as encounters on the river, launch and rapid waiting times. Generally, boaters prefer lower use levels with few encounters (Shelby and Heberlein 1986 ; Shelby 1980 ; Stewart et al 2003 ; Tarrant et al 1997 ) and encounters with the same user group (Tarrant et al 1997 ). Paddlers perceive encounters differently depending on the location on the river; in particular encounters at rapids are less preferred (Tarrant et al 1997 ).…”

Section: Introductionmentioning

confidence: 99%

Setting Preferences of High and Low Use River Recreationists: How Different are They?

Kainzinger

Arnberger

Burns

2016

Environmental Management

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Whitewater boaters often choose a river based on their preferences for attributes important for their trip experience. This study explored whether preferences and tradeoffs of whitewater boaters for social, resource, and managerial attributes of riverscapes differ among a high and a low use river in the United States by employing a stated choice approach. River trip scenarios were displayed using verbal descriptions and computer-generated photographs. Results indicate that use levels were more important for boaters on the low use river, whereas river difficulty and river access fee was of higher importance for the high use river boaters, who are more involved in this whitewater activity. Preferences for waiting times and trip length did not differ between the samples. Findings suggest that whitewater boaters of high and low use rivers have a different tradeoff behavior among river setting attributes, which has implications for river recreation management.

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“…The studies of the river ecosystem service included payment willingness for restoration of ecosystem service, ecological functions of the fish, turism values of river ecosystem, and economic cost-benefit analysis of environmental impact of hydropower projects, etc. [11][12][13][14][15] . However, the study on river ecosystem service developed more slowly compared with other ecosystems.…”

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confidence: 99%

Comparison of changes of typical river segment ecosystem service value in LRGR

et al. 2007

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Land use changes of river segment ecosystems from the Lancang River and Yuanjiang River were studied from 1985 to 2000 in order to compare their changes of service values and analyze the driving mechanisms based on eco-economic and GIS methods. Results showed that forest areas in both the river segment ecosystems were reduced. The reduced forest in the Lancang River (LR) segment ecosystem was mostly transformed into glebe with the conversion rate of 56.0%, while the reduced forest in the Yuanjiang River (YR) segment ecosystem was mostly transformed into residence land with the conversion rate of 42.5%. Both change amount and change rate of areas of each land use type in the LR segment ecosystem were much larger than those in the YR segment ecosystem. The total service value of the LR segment ecosystem was decreased with the change rate of 15.3%, while that of YR segment ecosystem was increased with the change rate of 0.6%. Manwan Hydropower development was the major anthropogenic driving factor which led to the change of service value of the LR segment ecosystem with the contribution rate of 93%. Agricultural activities were the most important driving factors in the YR segment ecosystem with the contribution rate of 59%. The loss of value of Sediment transportation service resulting from Manwan Hydropower Project construction should take responsibility for the significant decrease of service value of waters, even for the whole LR segment ecosystem. The ecosystem service coefficients of forest and grassland in the study area were much higher than the average level in China, so were the ratios of indirect value to direct value of both the river segment ecosystems. Under the impacts of human activities, the capacity of river ecosystem for providing products was enhanced, while it was weakened to maintain natural ecosystem health.

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Boater preferences for beach characteristics downstream from Glen Canyon Dam, Arizona

Cited by 15 publications

References 15 publications

Quantifying geomorphic and vegetation change at sandbar campsites in response to flow regulation and controlled floods, Grand Canyon National Park, Arizona

Quantifying geomorphic and vegetation change at sandbar campsites in response to flow regulation and controlled floods, Grand Canyon National Park, Arizona

Setting Preferences of High and Low Use River Recreationists: How Different are They?

Comparison of changes of typical river segment ecosystem service value in LRGR

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