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ID: 117450.0, MPI für Evolutionsbiologie / Ecophysiology
In situ nutrient enrichment: Methods for marine benthic ecology.
Authors:Worm, B.; Reusch, T. B. H.; Lotze, H. K.
Language:English
Date of Publication (YYYY-MM-DD):2000
Title of Journal:International Review of Hydrobiology
Journal Abbrev.:Internat. Rev. Hydrobiol.
Volume:85
Issue / Number:2-3
Start Page:359
End Page:375
Copyright:Jahrbuch 2001, Copyright MPG 2001
Review Status:not specified
Audience:Not Specified
Intended Educational Use:No
Abstract / Description: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
Free Keywords:benthic communities; field experiment; nitrogen; nutrient limitation; phosphorus
Document Type:Article
Version Comment:23993
Affiliations:MPI für Limnologie/Abt. Ökophysiologie
External Affiliations:Inst Meereskunde, D-24105 Kiel, Germany
Identifiers:ISSN:1434-2944 [ID-No:1]
LOCALID:1875/S 37532 [Listen-Nummer/S-Nummer]
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