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  In situ nutrient enrichment: Methods for marine benthic ecology.

Worm, B., Reusch, T. B. H., & Lotze, H. K. (2000). In situ nutrient enrichment: Methods for marine benthic ecology. International Review of Hydrobiology, 85(2-3), 359-375.

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 Creators:
Worm, B., Author
Reusch, T. B. H.1, 2, Author           
Lotze, H. K., Author
Affiliations:
1Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_976547              
2Department Evolutionary Ecology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_1445634              

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Free keywords: benthic communities; field experiment; nitrogen; nutrient limitation; phosphorus
 Abstract: Nutrient enrichment of marine sediments or the water column has been used to study plant nutrient limitation and its cascading effects on community structure. Here we develop methodological recommendations for in situ enrichment. We review 18 published enrichment methods. Nutrient concentrations varied through time and among sites, with sediment depth, distance from the source, fertilizer type and load. Combining available data, we could predict an increase in sediment porewater phosphate (r(2) = 0.48) but not ammonium (r(2) = 0.07) concentrations in a multiple regression model. In three comparative field experiments we applied a coated slow-release fertilizer in the sediment and the water column and followed nutrient concentrations over time. We recommend coated fertilizer pellets; because they provide gradual nutrient release, allow for realistic nutrient gradients, and even application but we emphasize that nutrient concentrations need to be monitored through time

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Language(s): eng - English
 Dates: 2000
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 117450
Other: 1875/S 37532
 Degree: -

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Title: International Review of Hydrobiology
  Alternative Title : Internat. Rev. Hydrobiol.
Source Genre: Journal
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Pages: - Volume / Issue: 85 (2-3) Sequence Number: - Start / End Page: 359 - 375 Identifier: ISSN: 1434-2944