Temperate macroalgae BSi concentrations

This is a dataset for biogenic silica concentrations (%BSi by dry weight) from macroalgae from two temperate estuaries: Waquoit Bay (MA, USA) and Narragansett Bay (RI, USA). Additional data on %C, del13C, and collection information is also provided. <br>The del13C data were previously published: Oczkowski, A., Schmidt, C., Santos, E., Miller, K., Hanson, A., Cobb, D., Krumholz, J., Pimenta, A., Heffner, L., Robinson, S. and Chaves, J., 2018. How the distribution of anthropogenic nitrogen has changed in Narragansett Bay (RI, USA) following major reductions in nutrient loads. <i>Estuaries and Coasts</i>, <i>41</i>(8), pp.2260-2276.