Biodiversity and distribution of gelatinous macrozooplankton in the North Sea and adjacent waters - dataset from winter 2022.

IF 1 Q3 MULTIDISCIPLINARY SCIENCES
Data in Brief Pub Date : 2024-11-02 eCollection Date: 2024-12-01 DOI:10.1016/j.dib.2024.111100
Camilla Juul Dahl Jensen, Louise G Køhler, Bastian Huwer, Malin Werner, Leslie Cieters, Cornelia Jaspers
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引用次数: 0

Abstract

The diversity and distribution of gelatinous macrozooplankton is described by presenting qualitative and quantitative data of the jellyfish and comb jelly community encountered in the North Sea and Skagerrak/Kattegat during January/February 2022. Data were generated as part of the North Sea Midwater Ring Net (MIK) survey [1], an ichthyoplankton survey conducted at night-time during the quarter 1 (Q1) International Bottom Trawl Survey (IBTS), aboard the Danish R/V DANA (DTU Aqua) and the Swedish R/V Svea (SLU). A total of 100 stations were investigated using a 13 m long Midwater Ring Net (MIK net) with an opening diameter of 2 m and a mesh size of 1.6 mm, which is 0.5 mm meshed for the last meter of the net and the cod end [2]. Samples were collected by double oblique hauls from the surface to 5 m above the seafloor [2]. Twelve gelatinous macrozooplankton species were encountered during the Q1 2022 survey. Species encountered included the hydrozoan jellyfish i) Aequorea vitrina, ii) Aglantha digitale, iii) Clytia spp., iv) Leuckartiara octona, v) Tima bairdii, vi) Muggiaea atlantica; the two scyphozoan jellyfish i) Cyanea capillata and ii) Cyanea lamarckii as well as the comb jelly (ctenophora) species i) Beroe spp., ii) Bolinopsis infundibulum, iii) Pleurobrachia pileus and iv) the non-indigenous Mnemiopsis leidyi. In total 4882 individual specimens from samples and sub-samples were analyzed and extrapolated to 71,888 records of gelatinous macrozooplankton in the investigation area. For rare species, the entire sample was analyzed, while for abundant taxa, sub-samples were used to assess abundances. The raw counts were converted to volume-specific densities (individuals m-3) and area-specific abundances (individuals m-2), based on calibrated flow meter recordings and recorded maximum depth of the MIK net during each haul. Further, size data for the different species were obtained from a total of 4775 individual gelatinous macrozooplankton organisms. Size data are presented in the accompanying database and was used to calculate species-specific wet weights, using published size-weight regressions [3]. In addition, we present spatial distribution patterns of the weight specific biomass for the total gelatinous macrozooplankton community as well as the sub-groups i) hydrozoa, ii) scyphozoa and iii) ctenophora across the investigation area. The presented data contribute to a baseline describing the gelatinous macrozooplankton diversity and distribution in the extended North Sea area during winter [3,4] and summer [5]. The data can contribute to address the question if gelatinous macrozooplankton densities increase due to global change pressures and will help to understand their interaction with commercially important fish species, which are assessed during the same surveys. As such, this data paper presents a valuable resource on biodiversity and non-indigenous species records and highlights the importance of monitoring gelatinous macrozooplankton to facilitate an ecosystem approach to assess if the ecosystem state meets a 'good environmental status (GES)', as demanded by the EU Marine Strategy Framework Directive (MSFD).

北海及邻近海域胶状大型浮游动物的生物多样性和分布——2022年冬季数据集。
通过对2022年1月至2月在北海和斯卡格拉克/卡特加特海域发现的水母和栉水母群落的定性和定量数据,描述了胶状大型浮游动物的多样性和分布。数据是作为北海中水环网(MIK)调查[1]的一部分生成的,[1]是在第一季度(Q1)国际海底拖网调查(IBTS)期间夜间进行的一项浮游鱼调查,该调查在丹麦R/V DANA (DTU Aqua)和瑞典R/V Svea (SLU)上进行。使用13米长的水环网(MIK网)进行了总共100个站点的调查,该网的开口直径为2米,网孔尺寸为1.6毫米,网的最后一米和网尾[2]为0.5毫米。样品是通过从表面到海底上方5米的两次斜拖来收集的。在2022年第一季度的调查中,发现了12种凝胶状的大型浮游动物。遇到的种类包括水螅类水母i) Aequorea vitrina, ii) Aglantha digitale, iii) Clytia spp., iv) Leuckartiara octona, v) Tima bairdii, vi) Muggiaea atlantica;两种棘纲水母i)毛蓝藻(Cyanea capillata)和ii)蓝蓝藻(Cyanea lamarckii)以及栉水母(ctenophora)种i) Beroe spp., ii) Bolinopsis infundibulum, iii) Pleurobrachia pileus和iv)非本地的leidyi记忆藻。共分析了4882个样品和亚样品,并外推了调查区凝胶状大型浮游动物的71888条记录。对稀有物种采用全样分析,对丰富的分类群采用亚样分析。根据校准的流量计记录和每次捕获时记录的MIK网最大深度,将原始计数转换为体积比密度(个体m-3)和面积比丰度(个体m-2)。此外,从总共4775个胶状大型浮游动物个体中获得了不同物种的大小数据。尺寸数据在随附的数据库中提供,并使用已发表的尺寸-重量回归[3]来计算物种特异性湿重。此外,我们还研究了整个调查区域内胶状大型浮游动物群落以及i)水螅类、ii)孢子虫类和iii)栉虫亚群的重量比生物量的空间分布格局。所提供的数据有助于描述北海扩展区冬季[3,4]和夏季的胶状大型浮游动物多样性和分布的基线。这些数据有助于解决胶状大型浮游动物密度是否因全球变化压力而增加的问题,并有助于了解它们与商业上重要的鱼类之间的相互作用,这是在同一调查期间评估的。因此,本数据文件提供了关于生物多样性和非本地物种记录的宝贵资源,并强调了监测胶状大型浮游动物的重要性,以促进生态系统方法来评估生态系统状态是否符合欧盟海洋战略框架指令(MSFD)的要求“良好环境状态(GES)”。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Data in Brief
Data in Brief MULTIDISCIPLINARY SCIENCES-
CiteScore
3.10
自引率
0.00%
发文量
996
审稿时长
70 days
期刊介绍: Data in Brief provides a way for researchers to easily share and reuse each other''s datasets by publishing data articles that: -Thoroughly describe your data, facilitating reproducibility. -Make your data, which is often buried in supplementary material, easier to find. -Increase traffic towards associated research articles and data, leading to more citations. -Open up doors for new collaborations. Because you never know what data will be useful to someone else, Data in Brief welcomes submissions that describe data from all research areas.
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