Fishery InvestigationsH.M. Stationery Office, 1957 - Fisheries |
Contents
INTRODUCTION | 1 |
Changes in the oxygen content of the river | 15 |
A STATISTICAL STUDY OF THE RIVER TEMPERATURES | 36 |
4 other sections not shown
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Common terms and phrases
50 per cent air saturation value air temperature average Buoy cages CALIFORN CALIFORNIA carbon dioxide Castle Donington coefficients concentration of ammonia concentration of dissolved concentration of un-ionized cooling diagram difference dissolved oxygen concentration downstream effect effluent channel ERSITY estuary feet Figure gradient gudgeon heat rejected heated effluents high water sampling increase investigation July Sept killed laboratory lethal LIBRARY DIEGO LIBRARY SAN LIBRARY THE UNIV Lloyd's Hailing Station low water sampling Maple Lodge mean temperature MILES FROM LLOYD'S mortalities Newburn Bridge Newport Bridge occasions ORNIA outdoor channel perch period of survival pH value pollution power station effluent rainbow trout Redheugh Bridge River Colne River Derwent river temperature River Tyne River Usk roach Ryton Ferry salinity SAN DIEGO SAN DIEGO LIBRARY SAN DIEGO UNIVERSITY Section September SITY species Stella Staithes surface survey synthetic detergents tench tests three depths tidal toxicity un-ionized ammonia UNIVERSITY LIBRARY Uskmouth Power Station variation Wylam