Reference

Rombouts I, Beaugrand G, Artigas LF, Dauvin JC, Gevaert F, Goberville E, Kopp D, Lefebvre S, Luczak C, Spilmont N, Travers-Trolet M, Villanueva MC & Kirby RR (2013). Evaluating marine ecosystem health: case studies of indicators using direct observations and modelling methods. Ecological Indicators 24:353–365.