The unique environment of the most acidified permanently meromictic lake in the Czech Republic

doi:10.1016/J.LIMNO.2013.01.005

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The unique environment of the most acidified permanently meromictic lake in the Czech Republic

Journal Article•DOI•

The unique environment of the most acidified permanently meromictic lake in the Czech Republic

Tomáš Hrdinka¹, Miroslav Šobr¹, Jan Fott¹, Linda Nedbalová¹•Institutions (1)

Charles University in Prague¹

01 Nov 2013-Limnologica (Urban & Fischer)-Vol. 43, Iss: 6, pp 417-426

TL;DR: In this paper, changes in the water properties and biological characteristics of the highly acidic Hromnice Lake (Western Bohemia) were investigated and the absence of spring mixolimnetic turnover due to ice melting and very slow heat propagation through the chemocline with a 6-month delay were observed.

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About: This article is published in Limnologica.The article was published on 2013-11-01 and is currently open access. It has received 26 citations till now. The article focuses on the topics: Chemocline & Phytoplankton.

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Journal Article•

Fluorometric analysis of chlorophyll a in the presence of chlorophyll b and pheopigments

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Nicholas A. Welschmeyer

01 Jan 1995-Oceanographic Literature Review

TL;DR: In this paper, a fluorometric method is described which provides sensitive measurements of extracted chlorophyll a free from the errors associated with conventional acidification techniques, while maintaining desensitized responses from both Chl b and pheopigments.

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Abstract: A fluorometric method is described which provides sensitive measurements of extracted chlorophyll a free from the errors associated with conventional acidification techniques. Fluorometric optical configurations were optimized to produce maximum sensitivity to Chl a while maintaining desensitized responses from both Chl b and pheopigments. Under the most extreme Chl b:Chl a ratio likely to occur in nature (1 : 1 molar), the new method results in only a 10% overestimate of the true Chl a value, while estimates from older acidification methods are 2.5-fold low. Under conditions of high pheopigment concentrations (pheo a: Chl a = 1 : 1 molar), the new method provides Chl a estimates that are equivalent to those determined from the acidification technique. The new simple method requires a single fluorescence determination and provides adequate sensitivity for small sample sizes (<200 ml) even in the most oligotrophic marine and freshwater environments.

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80 citations

Journal Article•DOI•

Geo- and biogeochemical processes in a heliothermal hypersaline lake

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John M. Zachara¹, James J. Moran¹, Charles T. Resch¹, Stephen R. Lindemann¹, Andrew R. Felmy¹, Andrew R. Felmy², Mark E. Bowden¹, Alexandra B. Cory¹, James K. Fredrickson¹ - Show less +5 more•Institutions (2)

Pacific Northwest National Laboratory¹, Washington State University²

15 May 2016-Geochimica et Cosmochimica Acta

TL;DR: Water chemical variations were investigated over three annual hydrologic cycles in hypersaline, heliothermal, meromictic Hot Lake in north-central Washington State, USA as mentioned in this paper.

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23 citations

Journal Article•DOI•

An Overview of an Acidic Uranium Mine Pit Lake (Caldas, Brazil): Composition of the Zooplankton Community and Limnochemical Aspects

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Carla Rolim Ferrari, Heliana de Azevedo, Maria José S. Wisniewski, Suzelei Rodgher, Cláudio Vitor Roque, M.R.L. Nascimento - Show less +2 more

24 Mar 2015-Mine Water and The Environment

TL;DR: In this paper, water samples were collected for 1 year from the newly created Osamu Utsumi uranium mine pit lake, Brazil, which is affected by acid mine drainage (AMD).

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Abstract: Water samples were collected quarterly for 1 year from the newly created Osamu Utsumi uranium mine pit lake, Brazil, which is affected by acid mine drainage (AMD). The water presented mean pH values of 3.8, high mean electrical conductivity values (2391 µS/cm), manganese (74 mg/L), sulfate (1413 mg/L) and uranium (3 mg/L). The density of rotifera was significantly higher than that of cladoceran. Rotifera Keratella americana, K. cochlearis and the Cladocera Bosminopsis deitersi, Bosmina sp., are being reported for the first time in samples from a uranium pit lake with AMD. Of the species registered, the order Bdelloidea was the most important in terms of density (17,500–77,778 ind/m3), since it occurred throughout the whole sampling period. The combined effect of moderately acidic pH and other potential stress factors, such as high concentrations of stable and radioactive contaminants, probably influenced the zooplankton species composition in the pit lake.

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19 citations

Cites background from "The unique environment of the most ..."

...Studies in acidic pit lakes (pH ranging from 2.6 to 3.8) formed by coal mining in Germany (Deneke 2000; Lessmann et al. 1999; Nixdorf et al. 1998; Wollmann et al. 2000), lignite mining in Australia (Moser and Weisse 2011), and pyrite exploration in the Czech Republic (Hrdinka et al. 2013) also found that the zooplankton communities of these lakes were composed mainly of rotifers common to such environments, namely Brachionus sericus, Cephalodella sp., C. gibba, C. hoodii, Elosa worrallii, Polyarthra sp., and Rotaria rotatoria (Bdelloidea order), in addition to Cladocera Chydorus sphaericus....
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...…1999; Nixdorf et al. 1998; Wollmann et al. 2000), lignite mining in Australia (Moser and Weisse 2011), and pyrite exploration in the Czech Republic (Hrdinka et al. 2013) also found that the zooplankton communities of these lakes were composed mainly of rotifers common to such environments, namely…...
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Journal Article•DOI•

Contrasting seasonal variations of geochemistry and microbial community in two adjacent acid mine drainage lakes in Anhui Province, China

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Ruirui Xin¹, Joseph Frazer Banda¹, Chunbo Hao¹, Huiyuan Dong¹, Lixin Pei¹, Dongyi Guo¹, Pengfei Wei¹, Zerui Du, Yi Zhang¹, Hailiang Dong¹ - Show less +6 more•Institutions (1)

China University of Geosciences (Beijing)¹

01 Jan 2021-Environmental Pollution

TL;DR: This study compared seasonal variations of geochemistry and microbial composition of two adjacent AMD lakes with different formation histories in Anhui Province, China to determine the composition and variation of acidophilic community, and their role in AMD ecosystem.

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16 citations

Journal Article•DOI•

An Experimental Insight into Extracellular Phosphatases - Differential Induction of Cell-Specific Activity in Green Algae Cultured under Various Phosphorus Conditions.

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Jaroslav Vrba¹, Markéta Macholdová², Linda Nedbalová², Jiří Nedoma, Michal Šorf¹, Michal Šorf³ - Show less +2 more•Institutions (3)

Sewanee: The University of the South¹, Charles University in Prague², Mendel University³

21 Feb 2018-Frontiers in Microbiology

TL;DR: The ability of Coccomyxa strains to produce extracellular phosphatases, together with tolerance for both low pH and metals can be one of the factors enabling the dominance of the genus in extreme conditions of acidic lakes.

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Abstract: Extracellular phosphatase activity (PA) has been used as an overall indicator of P depletion in lake phytoplankton. However, detailed insights into the mechanisms of PA regulation are still limited, especially in the case of acid phosphatases. The novel substrate ELF97 phosphate allows for tagging PA on single cells in an epifluorescence microscope. This fluorescence-labeled enzyme activity (FLEA) assay enables for autecological studies in natural phytoplankton and algal cultures. We combined the FLEA assay with image analysis to measure cell-specific acid PA in two closely related species of the genus Coccomyxa (Trebouxiophyceae, Chlorophyta) isolated from two acidic lakes with distinct P availability. The strains were cultured in a mineral medium supplied with organic (beta-glycerol phosphate) or inorganic (orthophosphate) P at three concentrations. Both strains responded to experimental conditions in a similar way, suggesting that acid extracellular phosphatases were regulated irrespectively of the origin and history of the strains. We found an increase in cell-specific PA at low P concentration and the cultures grown with organic P produced significantly higher (ca. 10-fold) PA than those cultured with the same concentrations of inorganic P. The cell-specific PA measured in the cultures grown with the lowest organic P concentration roughly corresponded to those of the original Coccomyxa population from an acidic lake with impaired P availability. The ability of Coccomyxa strains to produce extracellular phosphatases, together with tolerance for both low pH and metals can be one of the factors enabling the dominance of the genus in extreme conditions of acidic lakes. The analysis of frequency distribution of the single-cell PA documented that simple visual counting of 'active' (labeled) and 'non-active' (non-labeled) cells can lead to biased conclusions regarding algal P status because the actual PA of the 'active' cells can vary from negligible to very high values. The FLEA assay using image cytometry offers a strong tool in plankton ecology for exploring P metabolism.

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16 citations

Cites background from "The unique environment of the most ..."

...While C. elongata dominated in the phytoplankton of the eutrophic Lake Hromnice (Hrdinka et al., 2013), C. silvae-gabretae (previously misdetermined as Monoraphidium dybowskii) prevailed in the phytoplankton biomass of the mesotrophic Lake Plešné, with enormous bulk activity of extracellular…...
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...While C. elongata dominated in the phytoplankton of the eutrophic Lake Hromnice (Hrdinka et al., 2013), C. silvae-gabretae (previously misdetermined as Monoraphidium dybowskii) prevailed in the phytoplankton biomass of the mesotrophic Lake Plešné, with enormous bulk activity of extracellular phosphatases due to impaired P availability (Vrba et al., 2006)....
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...A common phytoplankton species in Lake Hromnice is Coccomyxa elongata (Barcytė and Nedbalová, 2017)....
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...elongata dominated in the phytoplankton of the eutrophic Lake Hromnice (Hrdinka et al., 2013), C....
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...9), high concentrations of P (1−52 μmol L−1 SRP) and several metals (Al, Fe, Mn, Ni, Cu, Co, and Pb) (Hrdinka et al., 2013)....
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Journal Article•DOI•

Basic Local Alignment Search Tool

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Stephen F. Altschul¹, Warren Gish¹, Webb Miller², Eugene W. Myers³, David J. Lipman¹ - Show less +1 more•Institutions (3)

National Institutes of Health¹, Pennsylvania State University², University of Arizona³

01 Oct 1990-Journal of Molecular Biology

TL;DR: A new approach to rapid sequence comparison, basic local alignment search tool (BLAST), directly approximates alignments that optimize a measure of local similarity, the maximal segment pair (MSP) score.

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88,255 citations

"The unique environment of the most ..." refers methods in this paper

...The sequences weremanually corrected and checked for similarity using the Basic Local Alignment Search Tool (Altschul et al., 1990)....
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...The sequences weremanually corrected and checked for similarity using the Basic Local Alignment Search Tool (Altschul et al., 1990). HPLC analysis of pigments in a sample dominated by the analyzed species was carried out at the Institute of Microbiology in Třeboň, Czech Republic. The sample was scanned for all major groups of algal pigments (carotenoids, chlorophylls, phycobiliproteins). For a detailed description of the method see Komárek et al. (1999)....
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Limnology: Lake and River Ecosystems

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Robert G. Wetzel

01 Jan 1975

TL;DR: The Ontogeny of Inland Aquatic Ecosystmes: Understanding is Essential for the Future References Appendix Index as discussed by the authors The ontogeny is essential for the future.

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Abstract: Preface 1 Prologue 2 Water as a Substance 3 Rivers and Lakes - Their Distribution, Origins, and Forms 4 Water Economy 5 Light in Inland Waters 6 Fate of Heat 7 Water Movements 8 Structure and Productivity of Aquatic Ecosystems 9 Oxygen 10 Salinity of Inland Waters 11 The Inorganic Carbon Complex 12 The Nitrogen Cycle 13 The Phosphorus Cycle 14 Iron, Sulfer, and Silica Cycles 15 Planktonic Communities: Algae and Cyanobacteria 16 Plantonic Communities: Zooplankton and their Interactions with Fish 17 Bacterioplankton 18 Land-Water Interfaces: Larger Plants 19 Land-Water Interfaces: Attached Microorganisms, Littoral Algae, and Zooplankton 20 Shallow Lakes and Ponds 21 Sediments and Microflora 22 Benthic Animals and Fish Communities 23 Detrirus: Organic Carbon Cycling and Ecosystem Metabolism 24 Past Productivity: Paleolimnology 25 The Ontogeny of Inland Aquatic Ecosystmes 26 Inland waters: Understanding is Essential for the Future References Appendix Index

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Organic geochemistry of natural waters

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E. M. Thurman

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TL;DR: The first part of the book as mentioned in this paper is a general overview of the amount and general nature of dissolved organic carbon in natural waters, and the second part is a summary of the data that has accumulated from many disciplines over the last decade.

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Abstract: This book is written as a reference on organic substances in natural waters and as a supplementary text for graduate students in water chemistry. The chapters address five topics: amount, origin, nature, geochemistry, and characterization of organic carbon. Of these topics, the main themes are the amount and nature of dissolved organic carbon in natural waters (mainly fresh water, although seawater is briefly discussed). It is hoped that the reader is familiar with organic chemistry, but it is not necessary. The first part of the book is a general overview of the amount and general nature of dissolved organic carbon. Over the past 10 years there has been an exponential increase in knowledge on organic substances in water, which is the result of money directed toward the research of organic compounds, of new methods of analysis (such as gas chromatography and mass spectrometry), and most importantly, the result of more people working in this field. Because of this exponential increase in knowledge, there is a need to pull together and summarize the data that has accumulated from many disciplines over the last decade.

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2,803 citations

Journal Article•DOI•

Fluorometric analysis of chlorophyll a in the presence of chlorophyll b and pheopigments

[...]

Nicholas A. Welschmeyer¹•Institutions (1)

Moss Landing Marine Laboratories¹

01 Dec 1994-Limnology and Oceanography

TL;DR: A fluorometric method is described which provides sensitive measurements of extracted chlorophyll a free from the errors associated with conventional acidification techniques and provides adequate sensitivity for small sample sizes even in the most oligotrophic marine and freshwater environments.

...read moreread less

2,343 citations

"The unique environment of the most ..." refers background in this paper

...The instrument is designed for analysing low amounts of chlorophylla and is relatively insensitive to chlorophyll-b and chlorophyll degradation products (Welschmeyer, 1994)....
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Journal Article•DOI•

The Chironomidae: the biology and ecology of non-biting midges.

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P. D. Armitage, P. S. Cranston, L. C. V. Pinder

01 Sep 1995-Journal of Animal Ecology

TL;DR: This work presents chironomids as indicators of past environmental change as well as their interactions with humans, and their role as food and behaviour in the life cycles and population dynamics of adults.

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Abstract: Introduction. Taxonmomy, morphology and biogeography. Morphology. Systematics. Biogeography. Biology, behaviour and ecology. Biology of the eggs and first-instar larvae. The habitats of chironomid larvae. Larval food and feeding behaviour. The pupa and events leading to eclosion. Behaviour and ecology of adults. Life cycles and population dynamics. Production ecology. Species interactions and community structure. Interactions with humans. Nuisance, economic impact and possiblities for control. Medical significance. Classification of water-bodies and pollution. Chironomids as indicators of past environmental change. Chironomidae as food. Conclusions. References. Index.

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1,078 citations

"The unique environment of the most ..." refers background in this paper

...The first-instar chironomid larvae were found in the open water, which is a well-known strategy for their dispersal over thewater body (Armitage et al., 1995)....
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