Publikation:
Decades needed for ecosystem components to respond to a sharp and drastic phosphorus load reduction

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dc.contributor.authorBeulker, Camilla
dc.contributor.authorKöhler, Antje
dc.contributor.authorChorus, Ingrid
dc.contributor.authorFastner, Jutta
dc.date.accessioned2024-06-16T13:58:53Z
dc.date.available2024-06-16T13:58:53Z
dc.date.issued2020
dc.description.abstractLake Tegel is an extreme case of restoration: inflow treatment reduced its main external phosphorus (TP) load 40-fold, sharply focused in time, and low-P water flushed the lake volume ~ 4 times per year. We analysed 35 years of data for the time TP concentrations took to decline from ~ 700 to 20-30 (my)g/l, biota to respond and cyanobacteria to become negligible. The internal load proved of minor relevance. After 10 years, TP reached 35-40 (my)g/l, phytoplankton biomass abruptly declined by 50% and cyanobacteria no longer dominated; yet 10 years later at TP < 20-30 (my)g/l they were below quantifiable levels. 20-25 years after load reduction, the lake was stably mesotrophic, macrophytes had returned down to 6-8 m, and vivianite now forms, binding P insolubly in the sediment. Bottom-up control of phytoplankton through TP proved decisive. Five intermittent years with a higher external P load caused some 're-eutrophication', delaying recovery by 5 years. While some restoration responses required undercutting thresholds, particularly that of phytoplankton biomass to TP, resilience and hysteresis proved irrelevant. Future research needs to focus on the littoral zone, and for predicting time spans for recovery more generally, meta-analyses should address P load reduction in combination with flushing rates. The Author(s) 2020en
dc.format.extent1 Onlineresource (pages 4621-4651)
dc.format.mediumonline resource
dc.identifier.doihttps://doi.org/10.60810/openumwelt-562
dc.identifier.urihttps://openumwelt.de/handle/123456789/3982
dc.language.isoeng
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectRestaurierung
dc.subjectPhosphor
dc.subjectSediment
dc.subjectPlankton
dc.subjectMakrophyten
dc.subjectBlaualgen
dc.titleDecades needed for ecosystem components to respond to a sharp and drastic phosphorus load reduction
dc.title.alternativeDecades needed for ecosystem components to respond to a sharp and drastic phosphorus load reduction
dc.typeWissenschaftlicher Artikel
dc.type.dcmitext
dc.type.mediumcomputer
dspace.entity.typePublication
local.bibliographicCitation.journalTitleHydrobiologia
local.bibliographicCitation.originalDOI10.1007/s10750-020-04450-4
local.bibliographicCitation.volume847 (2020)
local.collectionAufsätze
local.contributor.authorId02083982
local.identifier.catalogId02479377
local.ingest.leader06459naa a2200000uu 4500
local.jointTitleDECADES NEEDED FOR ECOSYSTEM COMPONENTS TO RESPOND TO A SHARP AND DRASTIC PHOSPHORUS LOAD REDUCTION
local.reviewtrue
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relation.isAuthorOfPublication9f099042-cdde-4a06-8577-a8bd71928439
relation.isAuthorOfPublication8332d730-8fa3-45be-9068-9d8d61f864f6
relation.isAuthorOfPublication890ce9dc-f5f1-4671-a2de-a1aa7e420d64
relation.isAuthorOfPublication.latestForDiscovery9f099042-cdde-4a06-8577-a8bd71928439
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