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Decadal increase in the number of recreational users is concentrated in no-take marine reserves ArchiMer
Gonson, Charles; Pelletier, Dominique; Gamp, Elodie; Preuss, Bastien; Jollit, Isabelle; Ferraris, Jocelyne.
In coastal areas, demographic increase is likely to result in greater numbers of recreational users, with potential consequences on marine biodiversity. These effects may also occur within Marine Protected Areas (MPAs), which are popular with recreational users. Our analysis builds on data collected over a ten-year period during three year-round surveys to appraise changes in recreational boating activities in coral ecosystems. Results show that the number of boaters has greatly increased, particularly so within MPAs during weekends and the warm season, when peaks in boat numbers have become more frequent. We also observed that the number of anchored boats has increased over the period. These changes may be resulting in biophysical impacts that could be...
Tipo: Text Palavras-chave: Recreational uses; MPA; Coral reef ecosystem; Spatio-temporal pattern; New Caledonia; Mooring practices.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00327/43776/44014.pdf
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Optimal Allocation of Reservoir Water AgEcon
Debnath, Deepayan; Stoecker, Arthur L.; Boyer, Tracy A.; Sanders, Larry D..
The purpose of this paper is to determine the optimal allocation of reservoir water among consumptive and non-consumptive uses. A non-linear mathematical programming model is developed to optimally allocate Lake Tenkiller water among competing uses that maximize the net social benefit. A mass balance is used to determine the level and volume of water in the lake. This paper examines the effect of water management on lake resources when recreational values are and are not included as control variables in the optimization process. Results show that maintaining the lake level to the ‘normal lake level’ of 632 feet during the summer months generates more recreational benefit rather than reducing the lake level by releasing water for hydro power generation.
Tipo: Conference Paper or Presentation Palavras-chave: Consumptive and non-consumptive use; Mass balance equation; Non-linear mathematical programming; Optimization; Recreational uses; Water allocation; Resource /Energy Economics and Policy.
Ano: 2009 URL: http://purl.umn.edu/46842
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