In 2010, HELCOM completed the initial assessment (HOLAS I) of the ecosystem health of the Baltic Sea – including the associated costs and benefits to the society. The assessment was based on data from 2003 to 2007. The summary report can be found at: https://helcom.fi/wp-content/uploads/2019/08/BSEP122.pdf and more information about HOLAS I at: https://helcom.fi/baltic-sea-trends/holistic-assessments/2010-initial-holistic-assessment/

All datasets for HOLAS I and associated metadata were here compiled. The datasets are:

BaP in mussel

BaP in sediment

BDE47 Status

Benzo[b]fluoranthene status

BghiP in mussels

BghiP in sediment

Bisphenol A in biota

Cadmium in fish liver

Cadmium in fish muscle

Cadmium in mussels

CB118 in fish

CB118 in mussels

CB118 in sediment

Chlorophyll a status 2007-2011

Chlorophyll a status confidence 2007-2011

Chlorophyll a status distance to target 2007-2011

Coastal areas chl-a

Coastal areas nitrogen

Coastal areas overall eutrophication status

Coastal areas phosphorus

Coastal areas secchi

DDE in herring

DDE in mussels

DDE in sediment

DEHP in biota

DEHP in sediment

Dioxin and PCB in herring

Dioxin and PCB in perch

Dioxin in herring

Dioxin in mussels

Dioxin in perch

Eutrophication status 2007-2011

Eutrophication status confidence 2007-2011

HCH in sediment

HCH in water

Interpolated benthic invertebrate status classification

Interpolated chemical status

Interpolated Chlorophyll a status classification

Interpolated DIN status classification

Interpolated DIP status classification

Interpolated ecosystem health status

Interpolated ecosystem health status

Interpolated eutrophication status classification

Interpolated secchi depth status classification

Mercury in fish muscle

Mercury in mussels

Nitrogen status 2007-2011

Nitrogen status confidence 2007-2011

Nitrogen status distance to target 2007-2011

Nonylphenols

Octylphenols

Open sea areas benthic invertebrates

Open sea areas chl-a

Open sea areas nitrogen

Open sea areas overall eutrophication status

Open sea areas phosphorus

Open sea areas secchi

Overall biodiversity status coastal area

Overall biodiversity status open sea

Overall chemical status coastal areas

Overall chemical status open sea

Overall ecosystem health status coastal area

Overall ecosystem health status open sea

Oxygen status 2007-2011

Oxygen status confidence 2007-2011

Oxygen status distance to target 2007-2011

PFOS in herring liver

PFOS in seal liver

Phosphorus status 2007-2011

Phosphorus status confidence 2007-2011

Phosphorus status distance to target 2007-2011

SCCP in fish

TBT in fish

TBT in mussels

TBT in sediment

Water clarity status 2007-2011

Water clarity status confidence 2007-2011

Water clarity status distance to target 2007-2011

More information about the HELCOM holistic assessments can be found here: https://helcom.fi/baltic-sea-trends/holistic-assessments/