Participatory science for coastal water quality: freshwater plume mapping and volunteer retention in a randomized informational intervention
Participatory science for coastal water quality: freshwater plume mapping and volunteer retention in a randomized informational intervention
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沿海水质的参与性科学：随机信息干预中的淡水羽流绘图和志愿者保留
DOI：
10.1039/c9em00571d
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Boehm, Alexandria B.
中科院分区：
文献类型：
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作者：
Jennings, Wiley C.;Cunniff, Sydney;Lewis, Kate;Deres, Hailey;Reineman, Dan R.;Davis, Jennifer;Boehm, Alexandria B.
对沿海水质的最大威胁是淡水排放。这是很难预测的空间范围内的淡水羽流在海滩，因为管理的过程中，在碎波带的质量运输是复杂的。虽然志愿者取样活动可能受到数据质量和志愿者保留的挑战，但探索性科学方法可促进海岸线数据的收集。这项研究的目的是（1）与志愿者合作，估计在接受污染排放的海滩的安全游泳距离，（2）测试对志愿者的信息反馈是否增加了保留。2019年，46名志愿者参与了为期12周的活动，在两个加州中部淡水排放口附近的海滩收集了1452个盐度测量值，并完成了参与调查。这些测量得出了145个不同的安全游泳距离（D90）估计值，涵盖了雨季和旱季的一系列环境条件。圣佩德罗河南部和北部的D90中位数分别为150和100 m，圣洛伦索河西部和东部的D90中位数分别为490和330 m。D90与相邻的淡水排放率在两个排放和潮汐水位在一个排放显着相关。平均而言，志愿者进行采样的几率连续每周下降4%（95% CI：1%，7%）。通过电子邮件向志愿者提供重复数据反馈的随机干预并不影响他们在研究中的保留。
Among the biggest threats to coastal water quality are freshwater discharges. It is difficult to predict the spatial extent of freshwater plumes at marine beaches because processes governing mass transport in the surf zone are complex. Participatory science approaches could facilitate collecting shoreline data, although volunteer sampling campaigns can be challenged by data quality and volunteer retention. The goals of this study were to (1) work with volunteers to estimate safe swimming distances at beaches that receive polluted discharges, and (2) test whether informational feedback to volunteers increased retention. Forty-six volunteers participated over 12 weeks in 2019 by collecting 1452 salinity measurements at beaches near the mouths of two Central California freshwater discharges and completing participation surveys. These measurements resulted in 145 distinct estimates of safe swimming distances (D90), spanning a range of environmental conditions during rainy and dry periods. Median D90s were 150 and 100 m at San Pedro Creek south and north, and 490 and 330 m at San Lorenzo River west and east, respectively. D90 was significantly associated with adjacent freshwater discharge rate at both discharges and tide level at one discharge. On average, the odds of volunteers conducting sampling decreased by 4% (95% CI: 1%, 7%) with each successive week. A randomized intervention providing repeated data feedback via email to volunteers did not affect their retention in the study.