Filters: Tags: biological surveys (X)466 results (30ms)
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).
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
Aerial photography techniques to estimate populations of laughing gull nests in Jamaica Bay, New York, 1992-1995
Survey of Amphibian and Reptilian Populations in Huron County, Michigan, With a Comparative Analysis of 1908 Vs. 1996 Species Richness and Relative Abundance
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
Sightings and behaviour of Peale's dolphins, Lagenorhynchus australis, with notes on dusky dolphins, L. obscurus, off southernmost South America
Status and distribution of breeding Common Scoters Melanitta nigra nigra in Britain and Ireland in 1995