Secondary producers: Fish Biomass at Doñana LTSER Platform (2012)

To achieve the objectives of this monitoring themselves used traps using light mesh Anguilera shrimp and, in order to obtain a wider range of size in fish catches.Are placed pots anguileras 2 to 5 depending on the dimensions of the station, the technical criterion and if the depth of the station permits, since by design require between 20 and 30 cm minimum depth for proper installation . Pots are preferably installed with a minimum of 15 meters apart. The deaths of pots point to the shore, and in the streams and creeks with current input to death is oriented counter to facilitate the entry of fish. It must ensure that traps are not completely sunk in the water to prevent drowning of other wildlife that can get caught in the trap.Also placed five shrimp pots of light, near-shore and far between around 10 meters, with the deaths to the center of the lagoon, from ingress completely covered by water.After about 24 hours, their extraction, pouring its contents into bowls or baskets with water, which is separated from the individuals counting them and weighing them by species.

为达成本监测的既定目标，研究团队采用轻质网眼捕鳗笼（Anguilera pot）开展采样，以期获取涵盖更广体长区间的鱼类渔获样本。根据监测站位的规模、技术规范以及站位水深条件，布设2至5个捕鳗笼；该类渔具的设计要求最小安装水深介于20至30厘米之间，以保障安装到位，因此需确保站位水深满足该要求。捕鳗笼的布设间距应不小于15米，为最优布设方案。捕鳗笼的笼口需朝向岸边；在存在水流的溪流与河汊中，笼口需朝向逆流方向，以便利鱼类进入笼内。需确保渔具不会完全没入水中，以防其他误闯的野生生物溺亡。此外，还需布设5个轻质捕虾笼（shrimp pot），覆盖近岸与远岸区域，各笼间距约10米，笼口朝向泻湖中心，且笼口完全没入水下。约24小时后，回收所有渔具，将其内的渔获物倒入盛水的容器或篮筐中，随后按物种对个体进行分类、计数与称重。