David Willetts Baron Willetts of Havant. Namespaces Article Talk.
Now in its second edition, Pollution of Lakes and Rivers provides essential insights into present-day water quality problems from an international perspective . PDF | On Jan 1, , Paul F Brain and others published Pollution of lakes and rivers: a Paleoenvironmental perspective (2nd edition) by John.
Smol Montreal , Quebec, Canada. Limnology Paleolimnology Limnogeology Arctic Diatoms . Brugam Journal of Paleolimnology. The examples cover much of the significant paleolimnological studies conducted during the past decades in different parts of our planet.
Contact the Author. Water is an essential life resource, yet the pollution of lakes and rivers has become an international problem, reaching crisis proportions in many regions. As demands on aquatic resources escalate, we must find new approaches to meet the challenges of the 21st century. Now in its second edition , Pollution of Lakes and Rivers addresses many of our present-day water quality problems from an international perspective, covering critical issues such as acidification, eutrophication, land-use changes, pollution by metals and other contaminants, climatic change, and biodiversity losses.
Go to Conservation Land Management. David Willetts Baron Willetts of Havant. Cetacean Paleobiology. Atlas of chrysophycean cysts by Anna N Wilkinson 12 editions published in in English and held by 71 WorldCat member libraries worldwide This Atlas attempts to dispel some of the mystery surrounding stomatocysts, to facilitate the accurate identification of individual cyst morphotypes, and to encourage other workers to begin using these important indicators of environmental change. Users without a subscription are not able to see the full content on this page.
This approach tracks the primary chlorophyll a pigment, plus all chlorophyll a isomers and degradation products, including pheophytin a and pheophorbide a , which are collectively referred to as Chl a. Sediment samples were processed for diatom analysis following standard methods We primarily followed the diatom nomenclature and taxonomy of Krammer and Lange-Bertalot We followed standard methods 41 to prepare sedimentary cladoceran samples.
At least cladoceran individuals were enumerated or at least 10 slides were full scanned for each sample. We mainly used Alonso 42 as the taxonomic guides for our identifications. Daphnia were identified to species group Daphnia longispina spp. All data were tested for normality before further analyses i. The software of R with basic and vegan packages 43 was applied for all the statistical analyses. How to cite this article : Chen, G.
Industrial arsenic contamination causes catastrophic changes in freshwater ecosystems.
Author Contributions G. National Center for Biotechnology Information , U. Sci Rep. Published online Nov Smol 4. John P. Author information Article notes Copyright and License information Disclaimer. Received Jun 12; Accepted Oct This work is licensed under a Creative Commons Attribution 4. This article has been cited by other articles in PMC. Abstract Heavy metal pollution is now widely recognized to pose severe health and environmental threats, yet much of what is known concerning its adverse impacts on ecosystem health is derived from short-term ecotoxicological studies.
Open in a separate window. Figure 1. Figure 2. Multiple-proxy sediment records of the two study lakes from Yunnan, China, tracking limnological changes over the last century. Biological responses Zooplankton populations were clearly affected by the arsenic pollution. Figure 3. Methods Sediment collection and dating A Renberg gravity corer 35 was used for collecting sediment cores at the central basin in each of the two lakes in Biological analyses Sediment samples were processed for diatom analysis following standard methods Additional Information How to cite this article : Chen, G.
Supplementary Material Supplementary Information: Click here to view. Footnotes Author Contributions G. References Schwarzenbach R.
The challenge of micropollutants in aquatic systems. Science , — Global change and mercury. Spatial and temporal variations of groundwater arsenic in South and Southeast Asia. Groundwater arsenic contamination throughout China. Arsenic round the world: a review. Talanta 58 , — A review of the source, behaviour and distribution of arsenic in natural waters.
Bioaccumulation and diminution of arsenic and lead in a freshwater food web. Arsenic speciation in plankton organisms from contaminated lakes: transformations at the base of the freshwater food chain. Systems integration for global sustainability.
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