Experimental benthic dredging was conducted in an unfished area in the Baltic Proper to mimic the impact of trawling, with a focus on benthic biogeochemical processes. Sediment cores were taken on the track where the surface sediment had been scraped away and compared to undisturbed controls. Benthic fluxes were immediately affected and pore water DIC profiles were truncated. The time needed for the sediment to readjust to a new steady state seemed to be nutrient-specific. Sediment properties (profiles of chlorophyll, organic carbon and water content) were found to change significantly. Macrofauna was removed completely by the dredge pointing out the potential loss of highly valuable functions that are associated with them. In the Baltic Sea, in areas which were previously the most heavily fished, the frequency of trawling may have left little time for recovery and potentially kept the seabed in a permanent state of transient biogeochemical cycling.

在波罗的海海域的一个未捕捞区域进行了实验性底栖疏浚，以模拟拖网捕鱼的影响，重点是底栖生物地球化学过程。在已刮掉表层沉积物的轨道上采集沉积物芯，并与未受干扰的对照物进行比较。底栖通量立即受到影响，孔隙水 DIC 剖面被截断。沉积物重新调整到新的稳定状态所需的时间似乎是特定于营养的。发现沉积物特性（叶绿素、有机碳和水含量的分布）发生了显着变化。大型动物被挖泥船完全移除，指出与它们相关的高价值功能的潜在损失。在波罗的海，在以前捕捞量最大的地区，