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首页> 外文期刊>Estuarine Coastal and Shelf Science >The ecosystem service value of living versus dead biogenic reef
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The ecosystem service value of living versus dead biogenic reef

机译：生与死的生物礁的生态系统服务价值

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Mixed maerl beds (corralline red algae) comprise dead thalli with varying amounts of live maerl fragments, but previously it was not known whether the presence of the live maerl increases the ecosystem service 'habitat provision' of the dead maerl for the associated epibenthos. A 'flying array' towed sled with high definition video was used to film transects of the epibenthos in dead maerl and mixed maerl beds in two locations to the north and south of the English Channel (Falmouth and Jersey). Mixed maerl beds supported greater number of taxa and abundance than dead beds in Falmouth, while in Jersey, mixed and dead beds supported similar number of taxa and dead beds had a greater abundance of epifauna. Scallops tended to be more abundant on mixed beds than dead beds. Tube worms were more abundant on mixed beds in Falmouth and dead beds in Jersey. An increasing percentage occurrence of live maerl thalli correlated with increasing number of taxa in Falmouth but not Jersey. It was concluded that while live thalli can increase the functional role of dead maerl beds for the epibenthos, this is dependent on location and response variable. As a result of this work, maerl habitat in SE Jersey has been protected from towed demersal fishing gear. (C) 2015 Elsevier Ltd. All rights reserved.
机译：混合的马尔尔河床（珊瑚红藻）包含死的塔利海藻和数量不等的活泼的马尔尔藻碎片，但以前不知道是否存在活的莫雷尔藻会增加死海藻对相关表皮动物的生态系统服务“栖息地供应”。使用带有高清视频的“飞行阵列”拖曳雪橇，在英吉利海峡北部和南部（法尔茅斯和泽西岛）的两个位置拍摄死鱼床和混合鱼床中的河床横断面。在法尔茅斯，混合的杂物床支持比死床更多的分类单元和丰富度，而在泽西岛，混合和死床支持相似数量的分类单元，并且死床具有更多的表生动物。扇贝在混合床上的床头比死床上的要多。在法尔茅斯（Falmouth）的混床和泽西岛（Jersey）的死床上，蠕虫更为丰富。在法尔茅斯，活黄藻的发生百分比增加与分类单元数量的增加有关，但与泽西岛无关。结论是，活的thalli可以增加死角鱼床对表皮动物的功能作用，但这取决于位置和响应变量。这项工作的结果是，保护了泽西岛东南部的栖息地免受拖曳的水下捕鱼器的侵害。 （C）2015 Elsevier Ltd.保留所有权利。

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