Filters: Tags: abundance (X)1,639 results (13ms)
Baltic Macoma: Abundance and distribution of an important winter food of diving ducks in Chesapeake Bay
OBIS-USA brings together marine biological occurrence data – recorded observations of identifiable marine species at a known time and place, collected primarily from U.S. Waters or with U.S. funding. Coordinated by the Science Analytics and Synthesis (SAS) Program of the United States Geological Survey (USGS), OBIS-USA, strives to meet national data integration and dissemination needs for marine data about organisms and ecosystems. OBIS-USA is part of an international data sharing network (Ocean Biogeographic Information System, OBIS) coordinated by the Intergovernmental Oceanographic Commission, of UNESCO (United Nations Educational, Science and Cultural Organization) International Oceanographic Data and Information...
Destructive grazing by sea urchins Strongylocentrotus spp. in a central California kelp forest: Potential roles of recruitment, depth, and predation.
Reproductive ecology of the freshwater red alga Batrachospermum boryanum Sirodot in a temperate headwater stream.
Comparisons of aboveground arthropods in burned, mowed and untreated sites in sandplain grasslands on Nantucket Island.
Relative abundance of dolphins associated with tuna in the eastern Tropical Pacific, estimated from tuna vessel sightings data for 1988 and 1989. (IWC SC/42/SM-36).
Distribution of wintering birds in central Maine: The interactive effects of landscape and bird feeders