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Full-Text Articles in Physical Sciences and Mathematics
Phocoena Sinus, Robert L. Brownell Jr.
Phocoena Sinus, Robert L. Brownell Jr.
United States Department of Commerce: Staff Publications
Order Cetacea, Suborder Odontoceti, Superfamily Delphinoidea, Family Phocoenidae. Four species are included in the genus. No subspecies are recognized in P. sinus.
Abundance And Biomass Of The Meiobenthos In Nearshore Lake Michigan With Comparisons To The Macrobenthos, Thomas F. Nalepa, Michael A. Quigley
Abundance And Biomass Of The Meiobenthos In Nearshore Lake Michigan With Comparisons To The Macrobenthos, Thomas F. Nalepa, Michael A. Quigley
United States Department of Commerce: Staff Publications
The meiobenthos of nearshore southeastern Lake Michigan was quantified by taking cores from three depths (11, 17, and 23 m) at monthly intervals from May to November 1976-79. Total meiobenthic abundance rangedfrom 69,700/m2 to 1,300,000/m2 and total biomass rangedfrom 0.03 to 0.87 g/m2. Nematodes accounted for 80% of all individuals and 66% of the biomass. Most of the major groups peaked in late spring/summer, but some peaked in early spring and fall. With the exception of nematodes, mean annual densities varied from two-fold to twelve-fold at a given station. Harpacticoids, tardigrades, and ostracods tended to be …