“…Castañeda et al, 2010;Fietz et al, 2011;Schmidt et al, 2010;Smith et al, 2012). Similarly, brGDGTs are also not exclusively produced in soil but also in lakes (Bechtel et al, 2010;Buckles et al, 2014;Loomis et al, 2011;Sinninghe Damsté et al, 2009;Tierney and Russell, 2009;Tierney et al, 2010Tierney et al, , 2012Zink et al, 2010) and rivers (De Jonge et al, 2014;Kim et al, 2012;Yang et al, 2013;Zell et al, 2013aZell et al, ,2013bZhang et al, 2012;Zhu et al, 2011). Furthermore, brGDGTs are also produced in the marine environment, but in much lower concentrations than in continental Contents lists available at ScienceDirect journal homepage: www.elsevier.com/locate/csr settings, therefore the marine production does not have a strong influence on the BIT index (e.g.…”