Western Pomo Pit Pressure / Temperature / Salinity / Oxygen profiles Autumn dataset 2015-2021

the central adriatic sea is characterized by three depressions collectively known as pomo (or jabuka in croatian) pits, with a maximum depth of about 270 m (marini et al 2016) and bottom mainly composed of fine muddy sediment (trincardi et al. 2014). the middle adriatic deep water (maddw) dwelling within the pomo pits is renewed at intervals of one to three years or occasionally longer, as a result of the formation of the northern adriatic dense water (naddw) (vilibić 2003; marini et al 2016).in addition to being characterized by a very peculiar bathymetry and oceanographic characteristics, this area hosts one of the main nursery for the european hake merluccius merluccius within the northern and central adriatic sea (angelini et al. 2016) and a population of nephrops norvegicus, characterized by small-sized mature individuals (angelini et al. 2020); furthermore, this area historically represented one of the main fishing ground shared by italian and croatian fleets targeting both species, which showed a decline in landing in the last decades (russo et al. 2018; fao‐gfcm 2021). after a series of management measures implemented since 2015 by the italian and croatian governments, the general fisheries commission for the mediterranean established in 2018 the pomo pits fishery restricted area (gfcm 2017) and recently confirmed its permanent duration (gfcm 2021). in the framework of an agreement with the italian ministry of agriculture and forestry (mipaaf), cnr-irbim carries out since 2015, on board r/v dallaporta, an autumn trawl survey in the western side of the pomo pits area; the survey aims to evaluate the effects of the management measures enforced in the area on the most commercially and ecologically important species (scampo survey; martinelli et al. 2021). furthremore, to understand possible effects of environmental changes on the species abundance and distribution, before or after each trawl haul, ctd (conductivity temperature depth) data are collected with a seabird electronic sbe 911plus (years 2015-2019) and seabird electronic sbe 19plusv2 (years 2020 and 2021). the multi-parameter probes are also equipped with a sbe43 dissolved oxygen (concentration and saturation) sensor. a sbe 5t pump ensures a constant flow over time inside the sensors.the dataset here presented contains 61 ctd and oxygen averaged profiles (0.5 db pressure interval) collected in autumn (from 2015 to 2021) within the pomo pits and in the surrounding area by means of multi parametric probes. all the profiles were subjected to quality control. data are flagged according the l20 (seadatanet measurand qualifier flags).

中央亚得里亚海以其三个统称为波莫（或克罗地亚语中的雅布卡）凹地而著称，这些凹地的最大深度约为270米（Marini 等人，2016年），底部主要由细泥质沉积物构成（Trincardi 等人，2014年）。位于波莫凹地内的中部亚得里亚深海（MADDW）每一年至三年或偶尔更长时间更新一次，这是由于北部亚得里亚海密集水（NADDW）的形成（Vilibić，2003年；Marini 等人，2016年）。除了具有非常独特的地形和水文特征之外，该区域还是欧洲鲽鱼（Merluccius merluccius）在北部和中部亚得里亚海的主要产卵地之一（Angelini 等人，2016年），以及一种小型成熟个体的挪威龙虾（Nephrops norvegicus）种群（Angelini 等人，2020年）；此外，该区域历史上曾是意大利和克罗地亚船队共同捕捞两种鱼类的主要渔场，而在过去几十年中，这两种鱼类的捕捞量均有所下降（Russo 等人，2018年；FAO-GFCM，2021年）。自2015年以来，意大利和克罗地亚政府实施了一系列管理措施，地中海渔业总委员会于2018年设立了波莫凹地渔业限制区（GFCM，2017年），并最近确认了其永久性（GFCM，2021年）。在意大利农业林业部（MIPAAF）的框架内，CNR-IRBIM自2015年起，在R/V Dallaporta号船上对波莫凹地区西部进行秋季拖网调查；该调查旨在评估该区域实施的管理措施对最具有商业价值和生态重要性的物种的影响（Scampo 调查；Martinelli 等人，2021年）。此外，为了理解环境变化对物种丰度和分布可能产生的影响，在每次拖网作业之前或之后，使用海鸟电子CTD（电导率、温度、深度）仪SBE 911plus（2015-2019年）和海鸟电子SBE 19plusv2（2020年和2021年）收集CTD数据。多参数探头还配备了SBE43溶解氧（浓度和饱和度）传感器。SBE 5t泵确保传感器内部流动的恒定性。本数据集包含61个CTD和氧气平均剖面（0.5 db压力间隔），这些剖面是在2015年至2021年的秋季通过多参数探头在波莫凹地和周边区域收集的，并已进行质量控制。数据根据L20（SeaDataNet 测量值标识符标志）进行标识。