Article: Quantifying temporal trends in anthropogenic litter in a rocky intertidal habitat
Marine pollution bulletin. 2020 Nov., v. 160
2020
Abstract: Most monitoring studies of marine anthropogenic debris have focused on sandy beaches, so little is known about litter on rocky shorelines. We surveyed litter trapped on a rocky intertidal shore in False Bay, South Africa, between May 2015 and March 2018. ...
| Abstract | Most monitoring studies of marine anthropogenic debris have focused on sandy beaches, so little is known about litter on rocky shorelines. We surveyed litter trapped on a rocky intertidal shore in False Bay, South Africa, between May 2015 and March 2018. An exceptional upwelling of seabed litter occurred in November 2017 (70 items∙m⁻¹). Excluding this event, monthly clean-ups at spring low tide collected 2 (1.3–3.1) items∙m⁻¹∙month⁻¹ and 31 (19.4–49.4) g∙m⁻¹∙month⁻¹ of which 74% was plastic (31% by mass). Litter loads peaked in autumn when seasonal rains washed litter into False Bay, suggesting that most litter comes from local land-based sources. Litter composition differed from that on a nearby sandy beach, with more glass and other dense items on the rocky shore, but 60% of plastic items floated in water. Sand inundation and biotic interactions helped to trap buoyant plastics in the intertidal zone. |
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| Keywords | autumn ; glass ; habitats ; littoral zone ; marine pollution ; sand ; spring ; South Africa |
| Language | English |
| Dates of publication | 2020-11 |
| Publishing place | Elsevier Ltd |
| Document type | Article |
| Note | NAL-AP-2-clean |
| ZDB-ID | 2001296-2 |
| ISSN | 1879-3363 ; 0025-326X |
| ISSN (online) | 1879-3363 |
| ISSN | 0025-326X |
| DOI | 10.1016/j.marpolbul.2020.111543 |
| Database | NAL-Catalogue (AGRICOLA) |
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