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Journal ArticleDOI

The influence of chironomus plumosus larvae on the exchange of dissolved substances between sediment and water

Wilhelm Granéli
- 01 Oct 1979 - 
- Vol. 66, Iss: 2, pp 149-159
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TLDR
The 4th instar Chironomus plumosus larvae (about 1000m−2) were added to tubes containing sediment and overlying water and the larvae greatly increased the trasnport of silica, phosphorus and iron from the sediment to the water.
Abstract: 
4th instar Chironomus plumosus larvae (about 1000·m−2) were added to tubes containing sediment and overlying water. At a temperature of 20°C the larvae greatly increased the trasnport of silica, phosphorus and iron from the sediment to the water. Oxygen concentrations did not influence the exchange of silica. For two non-calcareous sediments the exchange of phosphorus and iron was much higher under anaerobic than under aerobic conditions while the difference was small for sediment from a hardwater lake. Exchange of inorganic nitrogen was little influenced by added chironomid larvae.

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Journal ArticleDOI

Nutrient Cycling by Animals in Freshwater Ecosystems

Michael J. Vanni
- 01 Nov 2002 - 
TL;DR: This work has shown that nutrient translocation by relatively large animals may be particularly important for stimulating new primary production and for increasing nutrient standing stocks in recipient habitats.
Journal ArticleDOI

The Influence of Bioturbation on Physical, Chemical and Biological Parameters in Aquatic Environments: A Review

Gail Krantzberg
- 01 Jan 1985 - 
TL;DR: The role of benthic macroinvertebrates in sediment processing is of importance for investigators attempting to describe the dynamics of a wide range of materials in aquatic environments as discussed by the authors.
Book ChapterDOI

Different patterns of phosphorus release from lake sediments in laboratory experiments

Bengt Boström, +1 more
- 01 Jul 1982 - 
TL;DR: In this paper, the phosphorus release from surface sediments of eight lakes, mainly shallow lakes in agricultural areas, was studied in laboratory batch experiments with additions of acetate and/or nitrate.
Book ChapterDOI

The influence of animals on phosphorus cycling in lake ecosystems

Gunnar Andersson, +2 more
- 01 Dec 1988 - 
TL;DR: There is growing evidence that animals, predators and herbivores, directly or indirectly can control biomass of primary producers and internal cycling of phosphorus.
Journal ArticleDOI

Bioturbation of sediments by benthic macroinvertebrates and fish and its implication for pond ecosystems: a review

Zdeněk Adámek, +1 more
- 01 Feb 2013 - 
TL;DR: In this paper, a variety of benthic macroinvertebrates or benthivorous fish that forage and burrow various bottom tubes, holes and pits are investigated.
References
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Journal ArticleDOI

Modified Reagents for Determination of Urea and Ammonia

Albert L. Chaney, +1 more
- 01 Apr 1962 - 
TL;DR: Combinations of reagents are described for the catalyzed indophenol reaction for the determination of ammonia, which produces a stable blue color, and the procedure is adapted to thedetermination of urea after hydrolysis with urease.
Journal ArticleDOI

The exchange of dissolved substances between mud and water in lakes, ii

Clifford H. Mortimer
- 01 Aug 1941 - 
Journal ArticleDOI

Determination of nitrate in sea water by cadmium-copper reduction to nitrite

E. D. Wood, +2 more
- 01 Feb 1967 - 
TL;DR: An accurate, dependable determination of 0−60 μg-at/l. of NO−3-N in sea water has been developed by as mentioned in this paper, where the sample is treated with tetrasodium ethylenediaminetetraacetate solution and passed through a column of copperized cadmium filings.
Journal ArticleDOI

The measurement of total phosphorus in seawater based on the liberation of organically bound fractions by persulfate oxidation1

David W. Menzel, +1 more
- 01 Apr 1965 - 
Journal ArticleDOI

The colorimetric determination of silicate with special reference to sea and natural waters

J.B. Mullin, +1 more
- 01 Jan 1955 - 
TL;DR: In this article, the optimum conditions for the determination of silicate in natural waters by a molybdenum blue method have been investigated p-Methylaminophenol sulphate has a number of advantages over other reducing agents for the reduction of silicomolybdic acid.