Keywords Coelomactra antiquata（Spengler）;nature sanctuary;zooplankton;biomass;density; 西施舌（海蚌）;保护区;浮游动物;生物量;密度; He knows nothing of the nature of my work.
Even though the marble caverns of Lago Carrera have been named an official naturesanctuary by the Chilean government, they are not safe from the impact of these projects.