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Quantifying Recreational Use of an Estuary: A Case Study of Three Bays, Cape Cod, USA
Estuaries and Coasts ( IF 2.7 ) Pub Date : 2019-11-22 , DOI: 10.1007/s12237-019-00645-8
Kate K. Mulvaney , Sarina F. Atkinson , Nathaniel H. Merrill , Julia H. Twichell , Marisa J. Mazzotta

Estimates of the types and number of recreational users visiting an estuary are critical data for quantifying the value of recreation and how that value might change with variations in water quality or other management decisions. However, estimates of recreational use are minimal and conventional intercept survey methods are often infeasible for widespread application to estuaries. Therefore, a practical observational sampling approach was developed to quantify the recreational use of an estuary without the use of surveys. Designed to be simple and fast to allow for replication, the methods involved the use of periodic instantaneous car counts multiplied by extrapolation factors derived from all-day counts. This simple sampling approach can be used to estimate visitation to diverse types of access points on an estuary in a single day as well as across multiple days. Evaluation of this method showed that when periodic counts were taken within a preferred time window (from 11 am–4:30 pm), the estimates were within 44% of actual daily visitation. These methods were applied to the Three Bays estuary system on Cape Cod, USA. The estimated combined use across all its public access sites is similar to the use at a mid-sized coastal beach, demonstrating the value of estuarine systems. Further, this study is the first to quantify the variety and magnitude of recreational uses at several different types of access points throughout the estuary using observational methods. This work can be transferred to the many small coastal access points used for recreation across New England and beyond.

中文翻译:

量化河口的娱乐用途:以美国鳕鱼角三湾为例

到河口的休闲用户的类型和数量的估计是关键数据,用于量化休闲的价值以及该价值如何随水质变化或其他管理决策而变化。然而,娱乐用途的估计是最小的,并且常规的拦截调查方法对于在河口的广泛应用通常是不可行的。因此,开发了一种实用的观察性采样方法,以在不使用调查的情况下量化河口的娱乐用途。这些方法设计简单,快速,可以进行复制,涉及使用定期瞬时汽车计数乘以全天计数得出的外推因子。这种简单的采样方法可用于估计在一天中以及跨多天访问河口上各种类型的访问点的次数。对这种方法的评估表明,当在首选的时间范围内(从上午11点至下午4点30分)进行定期计数时,估算值在实际每日访问量的44%以内。这些方法被应用于美国科德角的三湾河口系统。估计所有公共访问站点的综合使用量与中型沿海海滩的使用量相似,证明了河口系统的价值。此外,这项研究是第一个使用观测方法对整个河口几种不同类型的接入点进行娱乐用途的多样性和规模进行量化的研究。
更新日期:2019-11-22
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