Filters: Tags: Biological surveys (X)466 results (81ms)
Aerial photography techniques to estimate populations of laughing gull nests in Jamaica Bay, New York, 1992-1995
Effectiveness of Three Barrier Types for Confining Grass Carp in Embayments of Lake Seminole, Georgia
Report of the two aerial surveys for marine mammals in California coastal waters utilizing a NOAA DeHavilland Twin Otter aircraft, March 9-April 7, 1991 and February 8-April 6, 1992
Epizootiology of Eustrongylides ignotus in Florida: distribution, density, and natural infections in intermediate hosts
Ornithological evaluation of the lower stream part of the alluvium of the River Morava (Slovak-Austrian frontier)
Seasonal distribution and reproductive status of macroalgae in Narragansett Bay and associated waters, Rhode Island, U.S.A.
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).
Innovative new methods for measuring the natural dynamics of some structurally dominant tropical sponges and other sessile fauna
Latitudinal trends, population size and habitat preferences of the Damara Tern Sterna balaenarum on Namibia's desert coast
Nekton composition of near-surface waters of the Subarctic Front Zone in the northwest part of the Pacific Ocean according to the data of drift-net catches