Spatial and temporal variations in beach litter on the Transkei coast of South Africa

被引：86

作者：

Madzena, A ^{[1
]}

Lasiak, T ^{[1
]}

机构：

[1] Univ Transkei, Dept Geog, ZA-5117 Umtata, Eastern Cape, South Africa

来源：

MARINE POLLUTION BULLETIN | 1997年 / 34卷 / 11期

关键词：

sandy beaches; litter; plastics spatial variation; temporal variation; South Africa;

D O I：

10.1016/S0025-326X(97)00052-0

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The quantity and composition of litter found along an underdeveloped coastline in south Africa are described. Small to medium-scale spatial variations in debris deposited over an unknown period on three beaches at two localities were examined. The mean counts and weights of the litter accumulated varied from 19.6 to 72.5 items and from 42.8-164.1 g m(-1) of shore, respectively Significant differences in counts were evident amongst areas-within-shores, but not amongst shores-within-locations nor between locations. Plastics accounted for ca 83% of the total counts and ca 47% of the total weight. Popular tourist beaches had the widest range of litter types. Temporal differences in the accumulation of newly deposited debris were also assessed, Mean monthly estimates varied from 1.4 to 9.8 new items and from 3.4-25.0 g m(-1) of shore. The composition of the newly-deposited litter was similar to, that accumulated over an unspecified time period, Difficulties in comparing studies are highlighted in the discussion, (C) 1997 Elsevier Science Ltd.

引用

页码：900 / 907

页数：8

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