Christoph Humborg – Links between biodiversity and carbon sequestration

Climate effects in the Baltic SeaLinks between biodiversity andcarbon sequestrationFrom victim to solutionChristoph HumborgIPCC SROCC. A clarion wake up callClimate change makes the ocean:● higher● warmer● more acidic● see heat waves● hold less oxygen● less productive● less predictableJane Lubchenco, AUG 2020OUR OCEANS ARE TAKING THE HEAT– BUFFERING >90% OF GLOBAL WARMINGERODING BIODIVERSITY– THREAT TOSUSTAINABILITYTHE BALTIC – A SENSITIVE COASTAL SEAEUTROPHICATION – THE LARGESTTHREAT TO THE MARINE ECOSYSTEMPhoto: Alf NorkkoBALTIC SEA ACTION PLAN- A SUCCESS STORYMeasures will improve the Baltic Sea environment- even in a changing climatebased on Saraiva et al. (2019) andArneborg (SMHI)”BLUE CARBON”– THE ROLE OF COASTAL BIODIVERSITYPhoto: Mats WesterbomWater temperature at 31 m72oC654321930 1940 1950 1960 1970 1980 1990 2000 2010 2020YearSource: Humborget al. 2019)Co(erutarepmeTPhoto: Mats WesterbomMassive methane emissions detectedEUTROPHICATION EXACERBATED BY CLIMATECHANGE - NEGATIVE EFFECTS ON BIODIVERSITYo COASTAL AREAS VULNERABLEo PROTECT BIODIVERSITY FROM MULTIPLEPRESSURES – STRONG ACTION NEEDED (MPA)o RESTORE CARBON-RICHECOSYSTEMS TO BUILD RESILIENCEOcean based mitigation options: From victim to solution03/12/2020http://www.oceanpanel.org/climateOcean based mitigation options: From victim to solutionhttp://www.oceanpanel.org/climateTake home messages● Following the BSAP will improve the open Baltic Sea environment- even in a changing climate● A healthy coastal sea with high biodiversity is critical to achievingglobal targets to limit climate change