Book ChapterDOI
Mass development of the flagellate Gonyostomum semen (Raphidophyta) in Swedish forest lakes - an effect of acidification?
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TLDR
There is an apparent connection between the appearance of Gonyostomum and acidification, but it seems not to be the low pH per se that is the cause, but rather interlinked factors.Abstract:
During the last 20–30 years the flagellate Gonyostomum semen has become more abundant in lakes, especially small humic lakes, in Scandinavia. Mass development of the alga has been reported from areas affected by anthropogenic acid deposition, and reports from bathers of health problems are becoming frequent. Although there is an apparent connection between the appearance of Gonyostomum and acidification, it seems not to be the low pH per se that is the cause, but rather interlinked factors. The present tendency towards a wider distribution of the alga in non-humic lakes, emphasizes the importance of a better understanding of small humic lakes.read more
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Journal ArticleDOI
Health risks caused by freshwater cyanobacteria in recreational waters.
TL;DR: An overview of the currently known cyanotoxins and of documented cases of human illnesses attributed to them is presented and exposure pathways and approaches to risk management are discussed.
Journal ArticleDOI
Dissolved humic substances – ecological driving forces from the individual to the ecosystem level?
Christian E. W. Steinberg,Sheku Kamara,Valeria Yu. Prokhotskaya,Valeria Yu. Prokhotskaya,Levonas Manusadzianas,Tatyana A. Karasyova,Maxim A. Timofeyev,Maxim A. Timofeyev,Zhang Jie,Andrea Paul,Thomas Meinelt,Vinicius F. Farjalla,Aline Y. O. Matsuo,B. Kent Burnison,Ralph Menzel,Ralph Menzel +15 more
TL;DR: Evidence is presented that dissolved HS are indeed taken up and interact directly and/or indirectly with freshwater organisms, and that they exert a mild chemical stress upon aquatic organisms in many ways.
Reference BookDOI
Monitoring bathing waters : a practical guide to the design and implementation of assessments and monitoring programmes
Jamie Bartram,Gareth Rees +1 more
TL;DR: In this paper, the authors propose a framework for the design and assessment of Monitoring Programmes and Assessments Resourcing and Implementation Quality Assurance Management Frameworks Public Participation and and Communication Physical Hazards, Drowning and Injury Sanitary Inspection and Microbiological Water Quality Cyanobacteria and Algae Other Biological, Physical and Chemical Hazards Aesthetic Aspects Epidemiology Index
Book ChapterDOI
Phytoplankton structure and dynamics in Lake Sanabria and Valparaíso reservoir (NW Spain)
TL;DR: In this article, the composition and seasonality of the phytoplankton population in a natural oligotrophic lake (Lake Sanabria) and a mesotrophic reservoir (Valparaiso) were compared.
Journal ArticleDOI
A phytoplankton trophic index to assess the status of lakes for the Water Framework Directive
Geoff Phillips,Anne Lyche-Solheim,Birger Skjelbred,Ute Mischke,Stina Drakare,Gary Free,Marko Järvinen,Caridad de Hoyos,Giuseppe Morabito,Sandra Poikane,Laurence Carvalho +10 more
TL;DR: The plankton trophic index as mentioned in this paper was developed in the WISER EU FP7 project and has been used to compare national phytoplankton classification systems in Northern and Central Europe.
References
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Journal ArticleDOI
An Evaluation of Phosphorus‐Chlorophyll‐Phytoplankton Relationships for Lakes
Kenneth H. Nicholls,P. J. Dillon +1 more
TL;DR: The relationship between total phosphorus and phytoplankton biomass for a group of Ontario lakes is better defined if summer average cell volume is used instead of average chlorophyll a concentration.
Journal ArticleDOI
Ecological effects of acid deposition upon peatlands: a neglected field in «acid-rain» research
TL;DR: The need for research on the vulnerability of bogs and fens to acid deposition and the role of acidification in determining nutrient availability, metal mobilization, and biogeochemical cycling by fauna and microflora is documented.
Journal ArticleDOI
Chlorophyll-phosphorus relations in individual lakes. Their importance to lake restoration strategies.
Val H. Smith,Joseph Shapiro +1 more
TL;DR: The analysis confirms that reductions in total phosphorus concentration in the lakes are typically accompanied by consistent declines in chlorophyll, and suggests that this response can be expected whether a lake is phosphorus or nitrogen limited, although the magnitude of the response may differ.
Journal ArticleDOI
Hypolimnetic phosphorus retrieval by diel vertical migrations of lake phytoplankton
TL;DR: The vertical distribution of inorganic phosphorus in the lake showed a sharp increase across the thermocline so that enhanced concentrations were available to phytoplankton just below the thermOCline, while inorganic nitrogen concentrations did not show such a marked relation to thermal stratification.
Book ChapterDOI
Changes in the phytoplankton of Lake Trummen induced by restoration
TL;DR: In this article, the authors investigated the ecology of Lake Trummen and found that the lake was restored by suction dredging of the top sediment layer, which reduced nutrient concentrations and phytoplankton biomass.