Drivers of abundance and spatial distribution in Southern Ocean peracarid crustacea
Drivers of abundance and spatial distribution in Southern Ocean peracarid crustacea
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南大洋甲壳类甲壳动物丰度和空间分布的驱动因素
DOI：
10.1016/j.ecolind.2021.107832
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发表时间：
2021
影响因子：
6.9
通讯作者：
Di Franco D
中科院分区：
文献类型：
--
作者：
Di Franco D
南大洋（SO）大陆架和深海是具有不同底栖生物群落特征的环境。它们的结构和组成是由不同的变量驱动和塑造的：在大陆架上，物理环境变量是形成动物丰度、结构和组成的主要驱动因素，而深海动物群最有可能是由捕食和竞争等生物变量驱动的。在陆架和深海底栖生物群落中，过足类（如片足类和等足类）是最主要的类群之一，在这两个环境中都表现出较高的丰度和多样性。关于它们在SO中的组合结构和组成以及影响它们的环境变量的知识仍然有限。因此，我们的研究目的是研究SO大陆架和深海的过表层组合，并在大的地理尺度上沿着宽的水深梯度（从160 m到约6000 m）评估形成其组合结构的主要驱动因素。在南纬77°~ 41°的9次考察中，利用底栖雪撬（EBS）采集了183,606种鱼的空间分布特征。深度是形成过礁丰度格局的主要驱动因素，它们的组合结构在大陆架（<1499 m）与深海（< 1500 m）不同。深度与不同过层目的相关关系也不同：等足类丰度随深度增加而增加，片足类与足类呈负相关；与cumacean和tanaidacean没有相关性。SO大陆架和SO深海之间不同的过礁生物组合结构可能是由于假设这两种环境（大陆架上的物理变量和深海中的生物相互作用）存在不同的驱动力来塑造底栖生物组合。因此，我们还建议，由于气候变化引起的环境变化（如温度、冰层覆盖、生产力）将根据所考虑的水深范围产生不同的后果。
The Southern Ocean (SO) continental shelf and deep sea are environments characterised by different benthic communities. Their structure and composition are driven and shaped by different variables: whilst on the continental shelf physical environmental variables are the main drivers shaping faunal abundance, structure and composition, the deep-sea fauna is most problably driven by biological variables such as predation and competition. Among shelf and deep-sea benthic communities, peracarids (e.g. amphipods and isopods) are one of the most dominant groups, showing high levels of abundance and diversity in both environments. Knowledge on their assemblage structure and composition in the SO remains limited, as well as the knowledge of the environmental variables that influence them. Therefore, the aim of our study was to investigate peracarid assemblages from the SO continental shelf and deep sea and to assess the main drivers shaping their assemblage structure along a wide bathymetric gradient (from 160 m to about 6000 m depth) and at a large geographic scale. We analysed the spatial distribution of 183,606 peracarids sampled using an epibenthic sledge (EBS) during nine different expeditions in the SO, covering a latitudinal range of 77° to 41° South. Depth was identified as the main driver shaping peracarid abundance pattern, their assemblage structure from the continental shelf (<1499 m) was dissimilar to that from the deep sea (>1500 m). Also, depth was differently correlated with different peracarid orders: while isopod abundances increased with depth, amphipods and mysids were negatively correlated; no correlation was found with cumaceans and tanaidaceans. The dissimilar peracarid assemblage structure between the SO continental shelf and the SO deep sea can be due to the assumption that there are different driving forces shaping benthic assemblages from these two environments (physical variables on the continental shelf, biological interactions in the deep sea). As a result, we also suggest that environmental changes due to climate change (e.g. temperature, ice coverage, productivity) would have different consequences depending on the bathymetric range considered.
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南极生态系统研究进展中的跨学科。
影响因子：
1.9
作者：
J. Gutt;E. Isla;A. N. Bertler;G. Bodeker;T. Bracegirdle;R. Cavanagh;J. Comiso;P. Convey;V. Cummings;R. De Conto;D. De Master;G. di Prisco;F. d’Ovidio;H. Griffiths;A. L. Khan;J. López;A. Murray;U. Nielsen;S. Ott;A. Post;Y. Ropert‐Coudert;T. Saucède;R. Scherer;S. Schiaparelli;I. Schloss;C. R. Smith;J. Stefels;C. Stevens;J. Strugnell;S. Trimborn;C. Verde;E. Verleyen;D. Wall;N. Wilson;J. Xavier
通讯作者：
J. Xavier
波罗的海沉积物中的单孔菌密度和生物地球化学
DOI：
--
发表时间：
2007
期刊：
影响因子：
--
作者：
K. Karlson;S. Hulth;R. Rosenberg
通讯作者：
R. Rosenberg
不同尺度的斜坡和深海丰度：南大洋等足类动物展示了深海的复杂性
DOI：
--
发表时间：
2007
期刊：
影响因子：
--
作者：
S. Kaiser;D. Barnes;A. Brandt
通讯作者：
A. Brandt
影响因子：
1.6
作者：
Kaiser, Stefanie;Barnes, David K. A.;Brandt, Angelika
通讯作者：
Brandt, Angelika
DOI：
--
发表时间：
2020
期刊：
影响因子：
--
作者：
J. Xavier;Y. Cherel;G. Boxshall;A. Brandt;Tim Coffer;J. Forman;C. Havermans;A. Jażdżewska;J. Kouwenberg;S. Schiaparelli;K. Schnabel;V. Siegel;G. Tarling;S. Thatje;P. Ward;J. Gutt
通讯作者：
J. Gutt