Complex sentence: Organosulfur compounds, which are produced by aquatic organisms, will form extremely stable sulfide complexes with silver as silver will outcompete other metals for the available sulfide; leading to an overall decrease in bioavailable sulfur in the community.
Split into simpler sentences: Organosulfur compounds, which are produced by aquatic organisms, form extremely stable sulfide complexes with silver. Silver outcompetes other metals for the available sulfide, leading to an overall decrease in bioavailable sulfur in the community.