Data from: Connectivities with shellfish farms and channel rivers are associated with mortality risk in oysters

two age-classes of pacific oysters (crassostrea gigas), i.e. young and adult, were used as sentinels to monitor mortality in the baie des veys (normandy, france) from mid-april to october 2014. oysters were deployed at 39 sites spread over a 37 km2 surface area inside and outside of the shellfish farms. each site was visited 9 times (12-15 may, 13-16 june, 26-30 june, 12-18 july, 27-29 july, 11-14 august, 25-27 august, 9-12 september, 16 october 2014) during spring tides. for young oysters, cumulative mortality obtained in september is provided. for adult oysters, cumulative mortality is provided for 2 periods: from mid-april to mid-july (period 1) and from mid-july to october (period 2). a validated 3-d hydrodynamic model for applications at regional scale (mars-3d) coupled with a biogeochemical model (ecomars-3d) was used to generate high frequency data of seawater temperature, salinity, chlorophyll a concentration (derived from phytoplankton) and hydrodynamic connectivity to oyster farms and to the mouths of the channel rivers at the 39 sites. for seawater temperature, salinity and chlorophyll a, the minimum, maximum and mean values of hourly data are provided for the whole study period as well as the mean of daily mean or median of daily median for periods 1, 2 (used for adult oysters) and the period from mid-april to september (used for young oysters). hydrodynamic connectivities to river channels (carentan and isigny) and shellfish areas (grandcamp and utah beach) were estimated in february, may and august 2014. this database is part of the anr gigassat project no. anr-12-agro-0001.

本研究选取了两种年龄阶段的太平洋牡蛎（Crassostrea gigas），即幼年和成年牡蛎，作为指示生物，以监测2014年4月中旬至10月期间法国诺曼底地区Baie des Vey海域的死亡率。牡蛎被放置在39个分布在整个贝类养殖场内外、面积达37平方公里范围内的站点。每个站点共进行了9次考察（5月12日至15日、6月13日至16日、6月26日至30日、7月12日至18日、7月27日至29日、8月11日至14日、8月25日至27日、9月9日至12日、10月16日）。对于幼年牡蛎，提供了9月份的累计死亡率。对于成年牡蛎，则提供了两个时期的累计死亡率：4月中旬至7月中旬（第一时期）和7月中旬至10月（第二时期）。本研究采用了经验证的适用于区域尺度的三维水动力模型（MARS-3D）与生物地球化学模型（ECOMARS-3D）耦合，以生成39个站点的高频海水温度、盐度、叶绿素a浓度（源于浮游植物）以及水动力连通性至牡蛎养殖场和河流入海口的数据。对于海水温度、盐度和叶绿素a，提供了整个研究期间每小时数据的最低值、最高值和平均值，以及第一、第二时期（用于成年牡蛎）和4月中旬至9月期间（用于幼年牡蛎）的日平均值或日中值均值。2014年2月、5月和8月估计了河流通道（Carentan和Isigny）和贝类养殖区（Grandcamp和Utah Beach）的水动力连通性。此数据库是ANR GIGASSAT项目编号ANR-12-AGRO-0001的一部分。