New Zealand Journal of Marine and Freshwater Research abstracts

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INTERTIDAL ZONE OF DELAWARE INLET, NELSON, NEW ZEALAND

D. J. Stanton

B. B. Bohlool*

Cilla Beasley

Cawthron Institute, P.O. Box 175, Nelson, New Zealand

Abstract A study was made of Delaware Inlet (41° 10'S, 173° 26' E), Nelson, New Zealand, during February - April 1976. The catchment contains sparse animal and human populations, and supplies unpolluted influent waters. Salinity of the water fluctuated widely from <4%o at the river mouth to 35.0%_o in the main channel at high tide. Nitrogen levels (N0₂-N, NO₃-N, NH₄-N, Kjeldahl-N) were determined on influent and waters of the inlet. For the main channel, levels of NO3-N, NH4-N and Kjeldahl-N tended to be substantially higher around low water than at high tide; respective maxima and minima were 0.016 and 0.001 g.m-3, 0.050 and 0.001 g.nH>, and 0.35 and 0.10 g.m-3. For water from river and streamlets, average levels of nitrogen components were similar to those for the main channel at low tide.

N.Z. Journal of Marine and Freshwater Research 11 (3) : 577 - 87
Received 6 September 1976; revision received 20 January 1977.

PDF file of entire paper: medium quality (1126K); (scanned from paper original: notes about this process)

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