Summary:
Suisun Marsh is the largest estuarine tidal marsh on the West Coast and a critical part of San Francisco Estuary. Peter Moyle has led a monthly sampling program for fish and invertebrates for more than three decades, using trawls and seines. This program is one of the standard monitoring programs in the estuary used for making decisions that affect water management for California. The research focuses on trends in fish and invertebrate populations that are highly affected by natural and unnatural regulation of tidal and freshwater inflow and on fish and macroinvertebrate assemblages subject to frequent additions of alien species.