The River Influence Controls Water Quality and Spatio-Temporal Microalgal Distribution in Pacific Estuaries (Padre Ramos and Salinas Grandes) of Nicaragua

Estuaries are coastal wetlands that deserve special attention because they are vulnerable, biodiversity- and service-rich environments. However, estuaries of tropical areas have been scarcely studied regarding water quality and biodiversity in spite of strong developments of their agricultural and livestock sectors. Two estuaries on the Pacific Nicaragua in which snapper cages had been set up were studied regarding water physicochemical properties, microalgae and cyanobacteria along with their dynamics over a hydrological year. Both environments showed excellent water quality (oligotrophy and absence of harmful organisms) arising from their fluvial features. During the rainy season, there was a decline in chemical compounds and microorganisms. In the dry period nutrients and salinity promoted different assemblages of microscopic primary producers that were never too dense. Nutrient inputs from shrimp farms, agricultural crops and snapper cages did not appear to increase eutrophication and cyanobacterial blooms did not occur. Furthermore, the strong fluvial character of these estuaries seems to prevent the entry of harmful dinoflagellates from marine areas.

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Charles Francis Adams: diary of a young American taxidermist visiting New Zealand, 1884–1887

Archives of Natural History ◽

10.3366/anh.2014.0206 ◽

2014 ◽

Vol 41 (1) ◽

pp. 1-16 ◽

Cited By ~ 2

Author(s):

B. J. Gill

Keyword(s):

New Zealand ◽

San Francisco ◽

Marine Invertebrates ◽

Working Life ◽

Early Years ◽

Detailed Account ◽

East Indies ◽

The Pacific ◽

Set Up ◽

White Island

In December 1884 Charles Francis Adams (1857–1893) left Illinois, USA, by train for San Francisco and crossed the Pacific by ship to work as taxidermist at Auckland Museum, New Zealand, until February 1887. He then went to Borneo via several New Zealand ports, Melbourne and Batavia (Jakarta). This paper concerns a diary by Adams that gives a daily account of his trip to Auckland and the first six months of his employment (from January to July 1885). In this period Adams set up a workshop and diligently prepared specimens (at least 124 birds, fish, reptiles and marine invertebrates). The diary continues with three reports of trips Adams made from Auckland to Cuvier Island (November 1886), Karewa Island (December 1886) and White Island (date not stated), which are important early descriptive accounts of these small offshore islands. Events after leaving Auckland are covered discontinuously and the diary ends with part of the ship's passage through the Dutch East Indies (Indonesia), apparently in April 1887. Adams's diary is important in giving a detailed account of a taxidermist's working life, and in helping to document the early years of Auckland Museum's occupation of the Princes Street building.

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EVALUASI KUALITAS PERAIRAN DALAM PEMBENIHAN IKAN KERAPU TIKUS (Cromileptis altivelis) Di HATCHERY PERAIRAN TANJUNG RIAU BATAM

Jurnal Rekayasa Lingkungan ◽

10.29122/jrl.v5i2.1889 ◽

2018 ◽

Vol 5 (2) ◽

Author(s):

Ratu Siti Aliah

Keyword(s):

Water Quality ◽

Water Supply ◽

Good Condition ◽

Brood Stock ◽

Water Storage Tank ◽

Water Quality Status ◽

Set Up ◽

Normal Status ◽

Tank Water ◽

Quality Status

An evaluation of the water quality at the hatchery of Tanjung Riau was conducted to understand the water quality status at the several place of the hatchery unit such as brood stock tanks, larva rearing tank, water storage tank, fi ngerling tank as well as the source of the water supply. The water quality status of Tanjung Riau generally is in a good condition to support the hatchery activities, but for turbidity and salinity were in the exceed and below the normal status and its infl uence on the spawning activity. To overcome the problem on the spawning of the brood stock, the improving of water supply with higher salinity and low turbidity should be set up to ensure the succeeded of the spawning.Key words : Water quality, grouper brood stock, hatchery,Tanjung Riau Batam

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Trust Territory of the Pacific Islands, Saipan, Guam, and American Samoa ground-water quality

Open-File Report ◽

10.3133/ofr87755 ◽

1987 ◽

Author(s):

J.J.S. Yee

Keyword(s):

Water Quality ◽

Ground Water ◽

Pacific Islands ◽

American Samoa ◽

Ground Water Quality ◽

The Pacific

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Digital data used to relate nutrient inputs to water quality in the Chesapeake Bay watershed

Open-File Report ◽

10.3133/ofr9960 ◽

1999 ◽

Cited By ~ 5

Author(s):

John W. Brakebill ◽

Stephen D. Preston

Keyword(s):

Water Quality ◽

Chesapeake Bay ◽

Digital Data ◽

Nutrient Inputs ◽

Chesapeake Bay Watershed

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What Advantages Can Be Expected from the Acceptance of Variable Quality Standards for Sewage Treatment Effluents?

Water Science & Technology ◽

10.2166/wst.1988.0173 ◽

1988 ◽

Vol 20 (4-5) ◽

pp. 249-251

Author(s):

Jacques Bernard

Keyword(s):

Water Quality ◽

Sewage Treatment ◽

Quality Standards ◽

Quality Level ◽

Environment Protection ◽

Economical Benefit ◽

Quality Objective ◽

Set Up ◽

Variable Quality

The flow and the water quality of the rivers vary throughout the year. Very frequently the environment protection authorities set up a quality objective for the river water and this mini mum quality level is constant. So, it wou1d seem possible to accept variable quality standards for plant effluents. A first approach of the problem,by a small French task group,based on three actual cases leads to the provisory conclusion that such a regulation is suitable and presents economical benefit only in some very limit ed cases.

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Institutional and legislative structure of water quality management in Turkey

Water Science & Technology ◽

10.2166/wst.1994.0245 ◽

1994 ◽

Vol 30 (5) ◽

pp. 261-268 ◽

Cited By ~ 3

Author(s):

Selmin Burak ◽

I. Ethem Gönenç ◽

Arzu Erol

Keyword(s):

Water Management ◽

Water Quality ◽

Quality Management ◽

Water Quality Management ◽

Secondary Importance ◽

Structure Of Water ◽

Legal Structure ◽

Set Up ◽

Legislative Structure

This paper examines the administrative and legal structure of the wastewater sector in Turkey, identifying its shortcomings and their causes, and suggests solutions. The study begins by outlining the existing administrative and legal structure, then focusing on the areas where difficulties are faced and seeking solutions to them. Those administrative and legal facets which have produced improvements and/or function effectively have been analysed so as to provide examples for other areas. When examining the sector it was observed that problems common to every area are the failure to adequately define powers and responsibilities, the lack of coordination between sectoral organisations, and the fact that attention is generally concentrated on routine matters of secondary importance. The fact that numerous organisations share powers in the same area causes confusion. Plurality also creates difficulties where enforcement is concerned. The existence of more than one set of regulations relating to the same area gives rise to loopholes. At the same time, unrealistic, and hence unenforceable standards undermine the effectiveness of sanctions. It has been concluded that a single organisation should be invested with the legal powers to lay down the principles of water management, that environmental courts should be set up to enforce legislation by means of sanctions; and that for this purpose existing legislation should be reexamined and revised as necessary and/or brought up to date.

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