Humborg presentation at 32 BSPC
How to make the Baltic Seaecosystem more resilientChristoph HumborgScientific Director, Baltic Sea CentreStockholm UniversityPhoto: Mats WesterbomHigher biodiversity incoastal ecoystemsbuild sresilience against perturbationsWater temperature , Finland, TvärminneSource: Humborg et al. 20192oCSynergies between water quality, marine biodiversityand climate change mitigationEffects oftoomuch nutrientsMainly land based sourcesNutrient supply to the Baltic Sea goes down–however , recovery takes timeNitrogen inputsPhosphorus inputsNitrogen inputs (kton/yr)30040050060070080090010001100120013001400Phosphorus inputs (kton/yr)102030405060701960 1980 2000 2020Nutrient inputs to the Baltic Sea (3 yrs running mean)Failed Baltic Sea Fisheries ManagementSmall-scalefisheriesIndustrialtrawlers1.Implement Baltic Sea Action Plan, with continuednutrient reductions, this will restore biodiversityand give preconditions for a sustainable fisheriesand for the coastal seas to act as a carbon sink.2.Fish carefully; this brings more jobs and food3.Mitigate climate change by boosting marineecosystems capacity to store carbon . This is theeconomic asset of the Baltic Sea . Full capacityrequires good water qu alityandrestoredbiodiversityWhat politicians need to do to achieve resilienceThank youfor listening !Christoph Humborg , ProfessorE-mail: christoph.humborg@su.sePhone : +46737078578su.se /ostersjocentrum /english /Twitter: @ balticseacentre @ostersjocentrumContact: