Mapping the consequences of artificial light at night for intertidal ecosystems
Mapping the consequences of artificial light at night for intertidal ecosystems
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DOI：
10.1016/j.scitotenv.2019.07.156
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发表时间：
2019-11-15
影响因子：
9.8
通讯作者：
Davies, Thomas W.
中科院分区：
文献类型：
--
作者：
Garratt, Matthew J.;Jenkins, Stuart R.;Davies, Thomas W.
广泛的沿海城市化导致人工光污染侵占潮间带生境，潮间带生境具有海岸保护、气候调节和游憩等生态系统服务功能，受到社会高度重视。虽然夜间人造光对陆地和河岸生态系统的影响有越来越多的文献记载，但对居住在沿海潮间带栖息地的生物的影响却没有得到很好的探索。研究人员绘制了海滨散步道夜间人造光在沙滩上的分布，并对大型无脊椎动物群落结构的影响进行了量化，计算了其他已知的影响潮间带生态系统生物多样性的共线环境变量（海岸高度、波浪暴露和有机质含量）。大型无脊椎动物群落组成随人工光梯度变化显著。随着光照的增加，物种数量和群落总生物量增加，这种关系随着有机质有效性的增加而更加明显（效应大小增加）。不同类群与人工光照的关系不同；27%的非珍稀类群（包括片足类、猫虫和沙泥虫）的丰度随着光照的增加而降低，20%的非珍稀类群（包括Tellinidae spp.）、lugworms （Arenicola marina）和ragworms （Nereididae spp.）的丰度随着光照的增加而增加。讨论了这些关系的可能原因，包括人造光对大型无脊椎动物行为的直接影响和通过营养相互作用产生的间接影响。随着世界各地沿海地区光污染的增加，潮间带生态系统可能会发生更大规模的变化。(c) 2019年作者。Elsevier B.V.出版
Widespread coastal urbanization has resulted in artificial light pollution encroaching into intertidal habitats, which are highly valued by society for ecosystem services including coastal protection, climate regulation and recreation. While the impacts of artificial light at night in terrestrial and riparian ecosystems are increasingly well documented, those on organisms that reside in coastal intertidal habitats are less well explored. The distribution of artificial light at night from seaside promenade lighting was mapped across a sandy shore, and its consequences for macroinvertebrate community structure quantified accounting for other collinear environmental variables known to shape bio-diversity in intertidal ecosystems (shore height, wave exposure and organic matter content). Macroinvertebrate community composition significantly changed along artificial light gradients. Greater numbers of species and total community biomass were observed with increasing illumination, a relationship that was more pronounced (increased effects size) with increasing organic matter availability. Individual taxa exhibited different relationships with artificial light illuminance; the abundances of 27% of non-rare taxa [including amphipods (Amphipoda), catworms (Nephtys spp.), and sand mason worms (Lanice conchilega)] decreased with increasing illumination, while 20% [including tellins (Tellinidae spp.), lugworms (Arenicola marina) and ragworms (Nereididae spp.)] increased. Possible causes of these relationships are discussed, including direct effects of artificial light on macroinvertebrate behaviour and indirect effects via trophic interactions. With increasing light pollution in coastal zones around the world, larger scale changes in intertidal ecosystems could be occurring. (c) 2019 The Authors. Published by Elsevier B.V.