: High levels of nitrogen and phosphorus continue to trigger massive algal blooms and expand "dead zones" (anoxic areas), which further promote cyanobacterial growth through the release of sediment phosphorus. Shifts in Community Composition Plankton Group Projected Future Trend Impact on Ecosystem Cyanobacteria Significant Increase
: Higher levels of dissolved organic matter from land runoff will favor heterotrophic bacteria over primary-producing phytoplankton in the north. The future for microplankton in the Baltic Sea
: Energy transfer to higher trophic levels, such as planktivorous fish (e.g., herring and cod), will likely decrease due to the smaller size of available prey. : High levels of nitrogen and phosphorus continue
: Increased precipitation, especially in the northern regions, is projected to lower salinity levels by up to such as planktivorous fish (e.g.