NIOMR http://hdl.handle.net/1834/1025 2013-06-19T02:40:53Z 2013-06-19T02:40:53Z Erondu, E.S. Chindah, A.C. http://hdl.handle.net/1834/2441 2011-09-13T00:15:50Z 1991-01-01T00:00:00Z

Title: Variation in the physico-chemical features and phytoplankton of new Calabar river at Aluu, Rivers State, Nigeria. Authors: Erondu, E.S.; Chindah, A.C. Abstract: The physico-chemical features and phytoplankton community of the upper reaches of the New Calabar river at Aluu were studied at high and low water slacks for a period of 12 months. The water was acidic (pH 5.5 – 6.5) with low alkalinity (10 – 20mg CaCO3 L-1 and characteristically soft (total hardness ranging from 10 to 60mg CaCO3L-1). There was obvious seasonal flux in the silica level, with dry season having higher values than wet season. The phytoplankton was predominated by the diatoms, which constituted more than 85% of the total phytoplankton population. The predominant taxa were Melosira sp. Tabellaria spp. Surirella spp. and Navicula spp. The phytoplankton density was significantly higher during the dry season than rainy season (Czekanowski’s Coefficient.Cz = 0.332) but there was no significant difference between the high and low tide values (Cz = 0.66).

1991-01-01T00:00:00Z Oyewo, E.O. http://hdl.handle.net/1834/2437 2011-09-13T00:16:26Z 1988-01-01T00:00:00Z

Title: Tolerance tests with three refined petroleum products and edible mollusc - Tympanotonus fascatus (Linne) Authors: Oyewo, E.O. Abstract: The tolerance of Tympanotonus fuscatus (linne) to films and dispersions of three refined petroleum products has been investigated. The tolerance ranking was Diesel Oil > Kerosene > Petrol. The dispersions were more deleterious to the test animals by varying orders of magnitude. Responsiveness and the capacity for proper orientation were adversely affected with the latter being affected before the former. An indication of upper threshold values for two of the observed responses is presented.

1988-01-01T00:00:00Z Udolisa, R.E.K. http://hdl.handle.net/1834/1294 2007-02-06T08:24:50Z 1982-11-10T00:00:00Z

Title: Techno economic considerations of shark driftnet fishery off Lagos, Nigeria Authors: Udolisa, R.E.K. Abstract: Experimental fishing operations with driftnets were conducted in Lagos coastal waters with a view to finding out appropriate gear for effective exploitation of sharks and other pelagic fish species that are not normally caught in trawls. The design and fabrication of the driftnet as well as the fishing trails were undertaken b/w May 1977 and April 1978. Nine driftnets of equal panels have three different streched mesh sizes of 190.5mm, 228.3mm respectively. Six of the driftnets were baited while three were unbaited. Analyses were carried out on species composition of catches by weight and number, catch efficiency of the driftnet as well as the operating cost and financial returns.

1982-11-10T00:00:00Z Ayinla, O. A. http://hdl.handle.net/1834/3203 2011-09-13T00:15:42Z 2008-01-01T00:00:00Z

Title: Technical publication of Nigerian Institute for Oceanography and Marine Research (NIOMR) Lagos Nigeria Authors: Ayinla, O. A. Abstract: The Nigerian Institute for Oceanography and Marine Research (NIOMR) established in November 1975 by the Research Institute Establishment Order of 1975 has the responsibilities to conduct research into the resources and geological/geophysical, chemical and physical characteristics of the Nigerian territorial waters and the high seas. NIOMR also conducts research to fish utilization as well as Extension and Liaison Services. Since the establishment of NIOMR, a total of 35 occasional papers and 109 technical papers had been published to expose the research findings of the Institute to various stakeholders. These technical papers were previously published as standalone papers. In order to improve the quality, publication and circulation of scientific information from the Institute NIOMR’s Technical Committee was set up in June 2007. I am happy to note that the new Technical Publication Committee has coordinated the publication of this new NIOMR Technical Paper Series as volumes. Each Volume which may consist of 5 or more papers will be subsequently published on a half yearly basis. The papers in this new series have been critically peer reviewed both internally and by external scientists. I hope that with the release of this maiden technical paper series, NIOMR scientists will seize the opportunity to make their research findings available to the scientific community, educational, government and private stakeholders. It is my believe that this publication and subsequent editions, will further extend the frontiers of knowledge and contribute to the body of scientific information needed for the socio-economic development and sustainable management of Nigeria’s marine coastal environment and resources.

2008-01-01T00:00:00Z