Macrozoobenthos GeoEcoMar DOORS September 2023

The dataset contains macrozoobenthos data collected during the MN248 Cruise, from 3 stations located in the Romanian Black Sea area, in 1-10 September 2023, in the framework H2020 DOORS Project.  The main goal of the cruise was to assess the sediment nutrients cycling capacity and the influence of faunal activity on benthic turnover rates of nutrient and oxygen through ex-situ sediment core incubation. The data acquisitions was focused on three main benthic habitats, as follows: coarse and mixed biogenic type of substrata suitable for thriving of mussel’s biogenic reefs and mud sediments under river plume influence. From each station, three replicates were collected with the Multicorer (the sampling size - 0.079 m2) and three with Van-Veen grab (the grasping area  -  0.125 m2). The sediment was preserved in buffered formalin 4% , then sieved through a 1 mm and 0.5 mm mesh sieve and subsequently stored in 70% ethanol. The database comprises taxonomic and quantitative data (density and wet weight biomass per square meter) for 69 macrozoobenthic species and 2 supraspecific groups.

本数据集包含MN248航次采集的大型底栖无脊椎动物（macrozoobenthos）数据。该航次于2023年9月1日至10日在罗马尼亚黑海海域的3个站位开展，隶属于H2020框架下的DOORS项目。本航次的核心目标为评估沉积物营养盐循环能力，并通过异位沉积物柱样培养实验，探究底栖生物活动对营养盐与氧气的底栖周转速率的影响。本次数据采集聚焦三类典型底栖生境：适宜贻贝生物礁繁衍的粗砾与混合生物成因基质，以及受河流羽流影响的泥质沉积物。每个站位均采用多管采泥器（Multicorer，采样面积：0.079 m²）采集3份重复样品，同时使用Van-Veen采泥器（抓斗面积：0.125 m²）采集3份重复样品。沉积物样品先用4%缓冲福尔马林固定，随后分别经1mm与0.5mm孔径筛网筛分，最终保存于70%乙醇溶液中。本数据库涵盖69种大型底栖无脊椎动物与2个超种阶元类群的分类学与定量数据，包括单位面积密度及湿重生物量。