FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1970036328> ?p ?o ?g. }

• W1970036328 endingPage "273" @default.
• W1970036328 startingPage "261" @default.
• W1970036328 abstract "AME Aquatic Microbial Ecology Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsSpecials AME 32:261-273 (2003) - doi:10.3354/ame032261 Effect of nitrogen and phosphorus additions on a benthic microbial mat from a hypersaline lake Antonio Camacho1, Rutger de Wit2,* 1Department of Microbiology and Ecology, Cavanilles Institute of Biodiversity and Evolutionary Biology, University of Valencia, 46100 Burjassot, Spain 2Laboratoire d¹Océanographie Biologique, UMR 5805, CNRS and Université Bordeaux 1, 33120 Arcachon, France *Corresponding author. Email: r.de-wit@epoc.u-bordeaux1.fr ABSTRACT: The effect of the increase in availability of inorganic nutrients (nitrogen and phosphorus) on a benthic microbial mat from the hypersaline Lake Salada de Chiprana (NE Spain) was assayed by nutrient-addition experiments in mesocosms, using 16 d incubation periods. The upper layer of the mat was dominated by diatoms, whereas the cyanobacterium Microcoleus chthonoplastes and filamentous green bacteria containing Bacteriochlorophyll (Bchl) d dominated deeper layers. The addition of nitrogen alone favoured an increase in total abundance of diatoms with respect to cyanobacteria, although without significant changes in the relative abundance of different diatom genera. Furthermore, this treatment resulted in decreased rates of gross oxygenic photosynthesis. In contrast, phosphorus additions, either alone or supplemented with nitrogen, increased the relative abundance of cyanobacteria with respect to diatoms. No direct effects of the different treatments on green bacteria were observed. The balanced availability of high amounts of both N and P supported an increase in biomass of oxygenic phototrophic populations, especially cyanobacteria. This was attributed to a combination of stimulating active growth and decreasing senescence; the latter was reflected by more than 3-fold increase of the ratio of chl a to phaeophytin a. Dinitrogen fixation was measured indirectly as acetylene reduction activity (ARA). ARA rates were low at the start of the experiments and remained low in the N treatment, while a strong stimulation was found in the control, P and N+P treatments. Because M. chthonoplastes is not capable of fixing dinitrogen, the stimulation of ARA was attributed to nitrogenase activities of heterotrophic bacteria. Our findings are generally in agreement with the resource ratio theory that predicts directional changes of community structure as a consequence of changing resource supply ratios. In addition to the effect of nutrient supply regimes on taxonomic structure of benthic communities, we also observed changes in some of their functional properties. However, application of this theory to sediment systems is not straightforward, because nutrient supply rates depend on the combined effect of mass transfer from the water column to the sediment, internal recycling and geochemical processes (precipitation/ dissolution) in the sediment. Sediment processes are difficult to quantify. KEY WORDS: Microcoleus chthonoplastes · Diatoms · Chloroflexus-type bacteria · Phosphate · Inorganic nitrogen · Gross oxygenic photosynthesis · Bioassay · Resource ratio theory · Lake Salada de Chiprana Full text in pdf format PreviousNextExport citation RSS - Facebook - Tweet - linkedIn Cited by Published in AME Vol. 32, No. 3. Online publication date: July 14, 2003 Print ISSN: 0948-3055; Online ISSN: 1616-1564 Copyright © 2003 Inter-Research." @default.
• W1970036328 created "2016-06-24" @default.
• W1970036328 creator A5020691718 @default.
• W1970036328 creator A5068598313 @default.
• W1970036328 date "2003-01-01" @default.
• W1970036328 modified "2023-09-27" @default.
• W1970036328 title "Effect of nitrogen and phosphorus additions on a benthic microbial mat from a hypersaline lake" @default.
• W1970036328 cites W1493940312 @default.
• W1970036328 cites W1533283980 @default.
• W1970036328 cites W1864174265 @default.
• W1970036328 cites W1882773787 @default.
• W1970036328 cites W1967186722 @default.
• W1970036328 cites W1969486438 @default.
• W1970036328 cites W1976414188 @default.
• W1970036328 cites W1977385840 @default.
• W1970036328 cites W1982751301 @default.
• W1970036328 cites W1988192209 @default.
• W1970036328 cites W1999018963 @default.
• W1970036328 cites W2000491533 @default.
• W1970036328 cites W2005558180 @default.
• W1970036328 cites W2009413812 @default.
• W1970036328 cites W2024831813 @default.
• W1970036328 cites W2027321409 @default.
• W1970036328 cites W2035154444 @default.
• W1970036328 cites W2037081726 @default.
• W1970036328 cites W2038196410 @default.
• W1970036328 cites W2039143541 @default.
• W1970036328 cites W2048042071 @default.
• W1970036328 cites W2057432527 @default.
• W1970036328 cites W2064450585 @default.
• W1970036328 cites W2065302172 @default.
• W1970036328 cites W2066691676 @default.
• W1970036328 cites W2070568587 @default.
• W1970036328 cites W2071252617 @default.
• W1970036328 cites W2083639455 @default.
• W1970036328 cites W2086434070 @default.
• W1970036328 cites W2087304360 @default.
• W1970036328 cites W2088224255 @default.
• W1970036328 cites W2095985166 @default.
• W1970036328 cites W2097382307 @default.
• W1970036328 cites W2110215145 @default.
• W1970036328 cites W2116321099 @default.
• W1970036328 cites W2120969795 @default.
• W1970036328 cites W2126286328 @default.
• W1970036328 cites W2129718584 @default.
• W1970036328 cites W2140950502 @default.
• W1970036328 cites W2144754408 @default.
• W1970036328 cites W2150139479 @default.
• W1970036328 cites W2273788417 @default.
• W1970036328 cites W2461047677 @default.
• W1970036328 cites W2514371285 @default.
• W1970036328 cites W2585702521 @default.
• W1970036328 cites W2606247199 @default.
• W1970036328 cites W2618314214 @default.
• W1970036328 cites W587633280 @default.
• W1970036328 cites W613454785 @default.
• W1970036328 cites W1593658962 @default.
• W1970036328 cites W2280405804 @default.
• W1970036328 doi "https://doi.org/10.3354/ame032261" @default.
• W1970036328 hasPublicationYear "2003" @default.
• W1970036328 type Work @default.
• W1970036328 sameAs 1970036328 @default.
• W1970036328 citedByCount "47" @default.
• W1970036328 countsByYear W19700363282012 @default.
• W1970036328 countsByYear W19700363282013 @default.
• W1970036328 countsByYear W19700363282015 @default.
• W1970036328 countsByYear W19700363282016 @default.
• W1970036328 countsByYear W19700363282017 @default.
• W1970036328 countsByYear W19700363282018 @default.
• W1970036328 countsByYear W19700363282019 @default.
• W1970036328 countsByYear W19700363282020 @default.
• W1970036328 countsByYear W19700363282022 @default.
• W1970036328 countsByYear W19700363282023 @default.
• W1970036328 crossrefType "journal-article" @default.
• W1970036328 hasAuthorship W1970036328A5020691718 @default.
• W1970036328 hasAuthorship W1970036328A5068598313 @default.
• W1970036328 hasBestOaLocation W19700363281 @default.
• W1970036328 hasConcept C107872376 @default.
• W1970036328 hasConcept C142796444 @default.
• W1970036328 hasConcept C178790620 @default.
• W1970036328 hasConcept C183688256 @default.
• W1970036328 hasConcept C185592680 @default.
• W1970036328 hasConcept C18903297 @default.
• W1970036328 hasConcept C197322856 @default.
• W1970036328 hasConcept C2778902744 @default.
• W1970036328 hasConcept C2779669040 @default.
• W1970036328 hasConcept C510538283 @default.
• W1970036328 hasConcept C523546767 @default.
• W1970036328 hasConcept C54355233 @default.
• W1970036328 hasConcept C59822182 @default.
• W1970036328 hasConcept C77077793 @default.
• W1970036328 hasConcept C81407943 @default.
• W1970036328 hasConcept C83042747 @default.
• W1970036328 hasConcept C86803240 @default.
• W1970036328 hasConcept C89944131 @default.
• W1970036328 hasConceptScore W1970036328C107872376 @default.
• W1970036328 hasConceptScore W1970036328C142796444 @default.
• W1970036328 hasConceptScore W1970036328C178790620 @default.

• next