Distribution and abundance of demersal fish from trawl stations in the bay of plenty,New Zealand, 1961–63 |
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| Authors: | L J Tong R D Elder |
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| Institution: | Fisheries Research Division, Marine Department , Wellington |
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| Abstract: | Between March 1961 and January 1963 trawling surveys were carried out in the Bay of Plenty. Seasonal comparisons of catch weight were made for the four commercially important species, snapper, tarakihi, trevally, and gurnard, during 1962–63. Only trevally showed any marked seasonal variation in total catch. Tarakihi were most abundant in waters over 50 fathoms and snapper, trevally, and gurnard were most abundant in shallower depths. The best return for fishing effort came from the middle sector of the Bay. There was a marked absence of undersized tarakihi and trevally from the catches. A species composition list for the Bay of Plenty waters and a table of species abundance at the stations sampled has been compiled from the trawl catch data. |
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| Keywords: | nitrogen phosphorus luxury uptake seston ratios ammonium enhancement turnover times chlorophyll plankton nutrient limitation sufficiency growth biomass |
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