Overview of coralline red algal crusts and rhodolith beds (Corallinales, Rhodophyta) and their possible ecological importance in Greenland
Overview of coralline red algal crusts and rhodolith beds (Corallinales, Rhodophyta) and their possible ecological importance in Greenland
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DOI：
10.1007/s00300-016-1975-1
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发表时间：
2017-03-01
期刊：
影响因子：
1.7
通讯作者：
Halfar, Jochen
中科院分区：
文献类型：
--
作者：
Jorgensbye, Helle I. O.;Halfar, Jochen
珊瑚红藻是一种分布全球、数量丰富的浅海底栖钙化生物。它们可以形成重要的生态系统，为各种海洋生物提供三维栖息地。虽然对珊瑚红藻的研究传统上集中在温水栖息地，但最近的许多报告现在已经描述了高纬度地区，特别是北半球广泛存在的珊瑚红藻生态系统。事实上，越来越明显的是，珊瑚红藻很可能是北极和亚北极光带海底主要的海洋钙化生物。本文首次概述了格陵兰岛珊瑚红藻结壳和红石（自由生活的珊瑚红藻结节）的分布，并首次报道了东格陵兰岛的红石。收集了博物馆的数据和最近的抽样资料，绘制了珊瑚属和rhodolith群落的分布图。格陵兰岛珊瑚红藻的深度范围从50米扩大到77米，增加了27米。此外，研究人员还首次在格陵兰岛的一个隐蔽峡湾发现了通常形成地壳的物种Clathromorphum compactum的虹石。根据这里收集的数据，很明显，rhodolith群落是格陵兰浅海陆架地区的一个普遍特征。更好地了解这些迄今为止知之甚少的高纬度生态系统的分布是至关重要的，因为它们是商业上重要的鱼类和无脊椎动物的产卵区和繁殖地。
Coralline red algae are a globally distributed and abundant group of shallow marine benthic calcifiers. They can form important ecosystems that provide a three-dimensional habitat to a large variety of marine organisms. While the study of coralline red algae has traditionally been focused on warm-water habitats, numerous recent reports have now described widespread coralline red algal ecosystems from high-latitude regions, particularly in the Northern Hemisphere. In fact, it is becoming increasingly evident that coralline red algae are likely the dominant marine calcifying organisms on the seafloor of the Arctic and subarctic photic zone. This article gives a first overview of the distribution of coralline red algal crusts and rhodolith (free-living coralline red algal nodules) grounds in Greenland and the first report of rhodoliths in East Greenland. Museum data and recent sampling information have been compiled to develop a distribution map of coralline genera and rhodolith communities. The depth range of coralline red algae in Greenland has been extended by 27 m, from 50 to 77 m depth. In addition, rhodoliths of the normally crust-forming species Clathromorphum compactum are described for the first time from a sheltered Greenland fjord. Based on the data compiled here, it becomes clear that rhodolith communities are a widespread feature of the Greenland shallow shelf areas. Gaining a better understanding of the distribution of these hitherto poorly understood high-latitude ecosystems is essential due to their function as spawning areas and nursery grounds for commercially important fish and invertebrates.