Journal ArticleDOI
Effectiveness and Longevity of Phosphorus Inactivation with Alum
Eugene B. Welch,G. Dennis Cooke +1 more
TLDR
In this article, the effectiveness and longevity of alum treatments were evaluated in 21 lakes (or lake basins) across the United States; 9 were polymictic and 12 were dimictic.Abstract:
Effectiveness and longevity of alum treatments were evaluated in 21 lakes (or lake basins) across the United States; 9 were polymictic and 12 were dimictic. Effectiveness was judged from reductions in lake TP (total phosphorus) and internal loading rate, as well as chlorophyll a (chl a), both initially and over periods ranging from 4 to 20 years following treatment. Internal loading rate was reduced in six of nine polymictic lakes/basins by an average of two-thirds, and lake TP was reduced by about one-half, which persisted for 5–11 years. Internal loading rate in dimictic lakes (7 of 7 with adequate data) remained reduced by an average of 80% for 4 to 21 years (average 13 yrs). For the six polymictic lakes, in which treatment was effective, chl a decreased by an average of two-thirds initially, but was about 40% less than die pre-treatment level after 5 to 11 years. Chl a decreased in seven dimictic lakes by an average of 57% initially and 42% after 5–18 years. In some cases, response was indepe...read more
Citations
More filters
Journal ArticleDOI
Role of sediment and internal loading of phosphorus in shallow lakes
TL;DR: The recovery period following a phosphorus loading reduction depends on the loading history and the accumulation of phosphorus in the sediment, but in some lakes a negative phosphorus retention continues for decades.
Journal ArticleDOI
Internal eutrophication: How it works and what to do about it-a review
Alfons J. P. Smolders,Leon P. M. Lamers,Esther C. H. E. T. Lucassen,G. van der Velde,Jan G. M. Roelofs +4 more
TL;DR: In the 1980s and 1990s, it became increasingly clear that changes in external nutrient loads alone could not entirely explain the severe eutrophication of surface waters in the Netherlands.
Journal ArticleDOI
Retention and internal loading of phosphorus in shallow, eutrophic lakes.
TL;DR: A general overview of the nature and important mechanisms behind internal loading of phosphorus (P), which is a phenomenon appearing frequently in shallow, eutrophic lakes upon a reduction of the external loading, is given in this paper.
Journal ArticleDOI
Mitigation options to reduce phosphorus losses from the agricultural sector and improve surface water quality: a review.
O.F. Schoumans,Wim J. Chardon,Marianne Bechmann,Chantal Gascuel-Odoux,Georges Hofman,Brian Kronvang,Gitte H. Rubæk,Barbro Ulén,J-M Dorioz +8 more
TL;DR: An overview of various categories of mitigation options in relation to phosphorus are given, in terms of their mode of action, applicability, effectiveness, time frame, environmental side-effects and cost.
Journal ArticleDOI
Restoration of eutrophic freshwater by managing internal nutrient loads. A review
TL;DR: The objective of this paper is to review the restoration methods of eutrophic ecosystems, emphasizing remediation methods of internal nutrient release budget as a major factor to control eutrophication.
References
More filters
Book
Standard methods for the examination of water and wastewater
TL;DR: The most widely read reference in the water industry, Water Industry Reference as discussed by the authors, is a comprehensive reference tool for water analysis methods that covers all aspects of USEPA-approved water analysis.
Journal ArticleDOI
Determination of chlorophyll and pheo‐pigments: spectrophotometric equations1
Book
Restoration and Management of Lakes and Reservoirs
TL;DR: In this paper, Limnology Lake and Reservoir Diagnosis and Evaluation Algal Biomass Control Techniques Directed toward Control of Plankton Algae lake and reservoir Response to Diversion and Advanced Wastewater Treatment Lake And Reservoir Protection From Non-Point Pollution Dilution and Flushing Hypolimnetic Withdrawal Phosphorus Inactivation and Sediment Oxidation Biomanipulation Copper Sulfate Macrophyte BiOMass Control Macrophytes Ecology and Lake Management Plant Community Restoration Water Level Drawdown Preventive, Manual, and Mechanical Methods
Journal ArticleDOI
Lake restoration by reduction of nutrient loading: Expectations, experiences, extrapolations
H. Sas,Ingemar Ahlgren +1 more
TL;DR: In this paper, the authors proposed a model for lake restoration by reduction of nutrient loading: Expectations, experiences, extrapolations, and extrapolation of extrapolation to the future.
Journal ArticleDOI
Lake restoration by reducing external phosphorus loading: the influence of sediment phosphorus release
TL;DR: Improvements in the condition of highly eutrophic lakes require very large reductions in external phosphorus loading, whereas in mildly enriched lakes moderate changes in the supply of phosphorus have noticeable effects on phytoplankton biomass.
Related Papers (5)
Role of sediment and internal loading of phosphorus in shallow lakes
Lake responses to reduced nutrient loading - an analysis of contemporary long-term data from 35 case studies
Erik Jeppesen,Martin Søndergaard,Jens Peder Jensen,Karl E. Havens,Orlane Anneville,Laurence Carvalho,Michael F. Coveney,Rainer Deneke,Martin T. Dokulil,Bob Foy,Daniel Gerdeaux,Stephanie E. Hampton,Sabine Hilt,Külli Kangur,Jan Köhler,E. Lammens,Torben L. Lauridsen,Marina Manca,Maria Rosa Miracle,Brian Moss,Peeter Nõges,Gunnar Persson,Geoff Phillips,Rob Portielje,Susana Romo,Claire L. Schelske,Dietmar Straile,István Tátrai,Eva Willén,Monika Winder +29 more