BALTSEM – Baltic Sea Long-Term Large Scale Eutrophication Model

BALTSEM, the BAltic sea Long-Term large Scale Eutrophication Model is a time-dependent ecosystem model developed by BNI Sweden and available through the Nest Decision Support System.


BALTSEM-C – includes carbon

BALTSEM-C is an expansion of BALTSEM, which in addition to nutrient cycling includes the inorganic carbon system and several classes of organic carbon.


BALTSEM-POP – simulates environmental toxins

Pollution by organic contaminants and other hazardous chemical substances is one of the major stressors in the Baltic Sea. Baltsem-POP can predict future distribution of organic chemicals.

This website is no longer in use

All our news, events and information is available at our new site

More information about BNI

Baltic Nest Institute Sweden
Stockholms University Baltic Sea Centre

Contact at BNI Sweden:
Bo Gustafsson,
+46 8 674 7593

Baltic Nest Institute Denmark
Aarhus University

Contact at BNI Denmark:
Jacob Carstensen,
+45 871 58 596

Berit Hasler,
+45 871 58 637

Baltic Nest Institute Finland
Finnish Environment Institute

Contact at BNI Finland:
Vivi Fleming-Lehtinen,
+358 295 251 879

The Nest System

Nest Sanbalt