I study migrations and movements of fishes in relation to their internal, endocrine, and external physical environment. Hydroacoustic methods are used to make quantitative assessments of fish abundance and behavior. Present studies are in the Barents Sea, North Sea, and the Benguela upwelling system. In local waters, present research concerns the communities of fishes inhabiting the estuary system of the Hudson River, New York Harbor, Long Island Sound, and the New York Bight-their composition, distribution, and changes in space and time. The local estuaries and nearshore waters, which are being studied, are often very contaminated and stressed.
Summertime hypoxia is commen.
Pollution has pronounced effects on behavior and abundance distributions of fish and benthic invertebrate populations. S.M. Oriented swimming by midwater fish at night, related to tidal currents. Woodhead, P.M.J. Effects of tide gates on the fish community of the East River. The fish community of New York Harbor, spatial and temporal distributions of major species. Woodhead, P.M.J. Inventory and characterizations of habitat and fish resources, and assessment of information on toxic effects in the New York-New Jersey Harbor Estuary.