“…In a first step, we convert these different units into wet weight/carbon per area or volume. 2001, 2009-2011, and 2014-2015 (literature-based review covering 1977-2011) 60 Schneider et al, 2003;Nausch et al, 2006;Gustafsson et al, 2014;Maciejewska and Pempkowiak, 2014;Hoikkala et al, 2015;Szymczycha et al, 2017 2001, 2009-2011, 2013-2016, and 1993-2005 59 Andersson and Rudehäll, 1993;Donali et al, 1999;Schneider et al, 2003;Nausch et al, 2006;Maciejewska and Pempkowiak, 2014;Szymczycha et al, 2017;Cisternas-Novoa et al, 2019;Winogradow et al, 2019 1983-1984and 198731 Virtanen, 1985Gast and Gocke, 1988;Heinänen, 1991 1976, 2010-2011, and 2012-2014 (literature-based review covering 1990-2010) 49 aboveground Kautsky et al, 1981;Risén et al, 2013;Boström et al, 2014;Jankowska et al, 2014Jankowska et al, , 2015Jankowska et al, , 2016Dahl et al, 2016;Röhr et al, 2016 1991, 199525 Sveegaard, 2011Benke et al, 2014 We divide all absolute values by associated areas (benthos and fish) or sampl...…”