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Non-indigenous species (NIS) can alter food web structure and function in many ways. While the predatory and competitive roles of NIS in aquatic environments are commonly studied, their role as a prey item for native predators is often overlooked. As the northern Baltic Sea lacks native crabs, the omnivorous estuarine Harris mud crab (Rhithropanopeus harrisii) is a novel invader to the system and...
Knowledge on spatial and seasonal distribution of species is crucial when designing protected areas and implementing management actions. The Baltic Proper harbour porpoise (Phocoena phocoena) population is critically endangered, and its distribution is virtually unknown. Here, we used passive acoustic monitoring and species distribution models to describe the spatial and seasonal distribution of harbour...
Continuous in-situ water quality monitoring methods have developed quickly during the 21st century and a wide selection of instruments for monitoring of different water quality parameters is now available. The usability and reliability of these devices is good and they provide new possibilities for oceanographical and limnological studies. Since 2006, we operated a buoy-based vertical profiler, which...
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