Tracking the sources and sinks of local marine debris in Hawai'i
Tracking the sources and sinks of local marine debris in Hawai'i
复制标题
DOI：
10.1016/j.marenvres.2012.12.002
复制
发表时间：
2013-03-01
影响因子：
3.3
通讯作者：
McDermid, Karla J.
中科院分区：
文献类型：
--
作者：
Carson, Henry S.;Lamson, Megan R.;McDermid, Karla J.
塑料污染对海洋环境产生生物、化学和物理影响，对沿海社区产生经济影响。这些影响在夏威夷岛东南部尤为严重，那里的志愿者每年从15公里长的海岸线上清除16公吨的碎片。虽然大多数是外国人，但也有一部分是当地人。我们在两条城市水道中使用漂浮的碎片保留栅来测量来自岛上最大社区希洛的碎片输入，并在附近的沿海沃茨释放木制漂流者来跟踪碎片的命运。在205天内，从两个流域保留了30公斤的碎片（73.6%是塑料），占希洛已开发土地面积的10.2%。在四次事件中，在希洛近海释放的851只木制漂流物中，23.3%在当地被回收，1.4%在远处，6.5%在其他岛屿。与模拟的表面电流和风的比较是混合的，表明近岸和潮汐动力学的重要性不包括在模型中。这项研究表明，当地的污染物可以保留在附近，有助于岛上的碎片堆积区，并迅速污染其他岛屿。(C)2012爱思唯尔有限公司版权所有。
Plastic pollution has biological, chemical, and physical effects on marine environments and economic effects on coastal communities. These effects are acute on southeastern Hawai'i Island, where volunteers remove 16 metric tons of debris annually from a 15 km coastline. Although the majority is foreign-origin, a portion is locally-generated. We used floating debris-retention booms in two urban waterways to measure the input of debris from Hilo, the island's largest community, and released wooden drifters in nearby coastal waters to track the fate of that debris. In 205 days, 30 kilograms of debris (73.6% plastic) were retained from two watersheds comprising 10.2% of Hilo's developed land area. Of 851 wooden drifters released offshore of Hilo in four events, 23.3% were recovered locally, 1.4% at distant locations, and 6.5% on other islands. Comparisons with modeled surface currents and wind were mixed, indicating the importance of nearshore and tidal dynamics not included in the model. This study demonstrated that local pollutants can be retained nearby, contribute to the island's debris-accumulation area, and quickly contaminate other islands. (C) 2012 Elsevier Ltd. All rights reserved.