дек 24, 2015 | 15:12

PubMed Publications. Part 3. Environmental science, biology

Comments 41 to 58 of 58

• New definitions of the concepts and terms ecosystem and biogeocenosis.

Dokl Biol Sci. 2002.4 comments
2015 Dec 03 2:40 p.m.
ABSTRACT: Ostroumov S.A. New definitions of the concepts and terms ecosystem and biogeocenosis. — Doklady Biological Sciences, 2002, Volume 383, p. 141-143. [MAIK Nauka/Interperiodica distributed by Springer Science+Business Media LLC. ISSN 0012-4966 (Print) 1608-3105 (Online)]. In 1935, the term 'ecosystem' was coined by Prof.A. Tansley. In the 1940s, another important term 'biogeocoenosis' was introduced by Prof. V. N. Sukachev. Since that time, a significant amount of new facts was accumulated in ecology. It is necessary to revisit the formulation of the basic concepts and terms in ecology, including the two terms mentioned above. The author proposed some new variants of the definition of the two terms that (1) reflect the modern understanding of the basics of ecology; and (2) avoid the vicious circle of using other terms that in turn request their definitions. The author realizes that the new variants of the terms cannot be ideal and some other variants of the definitions are also possible. 5 specific features of the proposed definition of ecosystem (Table 1). 8 specific features of the proposed definition of biogeocenosis, and 8 distinctions between the proposed definition and the classical definition by V.N.Sukachev (Table 2)].
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• A new type of effect of potentially hazardous substances: uncouplers of pelagial-benthal coupling.

Dokl Biol Sci. 2002.2 comments
2015 Dec 03 04:58 a.m.
ABSTRACT of this article: A new type of effect of potentially hazardous substances: uncouplers of pelagial–benthal coupling. — Doklady Biological Sciences. 2002. Vol. 383 (1-6): 127-130. Bibliogr.15. ISSN 0012-4966. Discovery of a new type of negative impact of pollutants on the biosphere, as a result of inhibition of water filtration by filter-feeders / suspension feeders. The water filtration and associated removal of suspended matter from water is part of migration of matter. As V.I. Vernadsky stressed, organisms are mediators or driving force of “biogenic migration of atoms in the biosphere”. This migration is partly implemented in the framework of pelagial–benthal coupling via the activity of filter-feeders, which remove the organic suspended matter from water and excrete pellets. The tables contains the following data: the average percentage of assimilated (16-90%) and non-assimilated (10-84%) food matter for 15 large taxa of invertebrates (Table 1); potassium bichromate inhibited water filtration by mussels Mytilus galloprovincialis (Table 2); surfactants, detergents, pesticides inhibited filtration by filter-feeders, marine and freshwater bivalves and rotifers (Table 3). A prediction is made: «Further research and experimental studies are expected to provide new evidence that sublethal concentrations of chemical pollutants induce a significant decrease in the filtration capacity of freshwater and marine filter feeders» (p.129). «The uncoupling process considered above is an anthropogenic violation of two basic laws (empirical rules or biogeochemical principles) of the biosphere functioning: (1) biogenic migration of atoms of chemical elements in the biosphere always tends toward its maximum expression; (2) on the geological time scale, the evolution of species gives rise to the forms of life that are stable in the biosphere, and is so directed that the biogenic migration of atoms in the biosphere increases» (p.129).]; DOI 10.1023/A:1015385723150;

• 2015 Dec 03 04:56 a.m.

Full text of this paper is available online free: A new type of effect of potentially hazardous substances: uncouplers of pelagial–benthal coupling. https://www.researchgate.net/publication/200576296

• Identification of a new type of ecological hazard of chemicals: inhibition of processes of ecological remediation.

Ostroumov SA.Dokl Biol Sci. 2002.2 comments
2015 Dec 03 04:53 a.m.
Full text of this article is available, online free: https://www.researchgate.net/publication/259402820

• 2015 Dec 03 04:51 a.m.

ABSTRACT: Identification of a New Type of Ecological Hazard of Chemicals: Inhibition of Processes of Ecological Remediation. — Doklady Biological Sciences, Vol. 385, 2002, pp. 377–379. Translated from Doklady Akademii Nauk, Vol. 385, No. 4, 2002, pp. 571–573. The author (Moscow University) discovered and quantitatively characterized a new type of ecological hazard of chemical pollution of water, which involves inhibition of important processes of ecological remediation of ecosystems (water filtration by aquatic bivalves). Experiments were performed using mollusks (oysters), Crassostrea gigas Thunberg, and a cell suspension in the seawater. The cell suspension was a model of suspended matter in aquatic ecosystem; this species of one-cell organisms was taken just for convenience, as a model of suspended particles. The laundry detergent Lanza-Automat inhibited water filtration by oysters (Crassostrea gigas). As a result, the removal of the suspended particles from water was inhibited. This demonstrated a new type of ecological hazard caused by water pollution with chemical pollutants at sublethal concentrations. This hazard is associated with the fact that chemical pollution of water causes inhibition of the physiological activity of filter-feeders, thereby inhibiting the important ecological processes of water filtration. These ecological processes contribute significantly to improving water quality, water purification and the related remediation of aquatic ecosystems (their ecological repair).

• Anthropogenic effects on the biota: towards a new system of principles and criteria for analysis of ecological hazards.

Ostroumov SA.Riv Biol. 2003.1 comment
2015 Dec 02 2:06 p.m.
Availability online of this article: Ostroumov S. A. Anthropogenic effects on the biota: towards a new system of principles and criteria for analysis of ecological hazards. Rivista di Biologia / Biology Forum. 2003. 96: 159-170. [ISSN 0035-6050] The full text: https://www.researchgate.net/publication/200581960; and: https://www.researchgate.net/publication/10669691;
https://www.researchgate.net/publication/10669691_Anthropogenic_effects_on_the_biota_towards_a_new_system_of_principles_and_criteria_for_analysis_of_ecological_hazards;

• Medium-term and long-term priorities in ecological studies.

Ostroumov SA.Riv Biol. 2003.1 comment
2015 Dec 02 1:58 p.m.edited
This article was among TOP FULL-TEXT DOWNLOADS in 2014-2015. 67 downloads from ResearchGate, 669 views, 9 bookmarks by 26.01.2015. Full text online free: https://www.researchgate.net/publication/200594244; Full title of the journal: Rivista di Biologia / Biology Forum. 2003 (May). 96: 327-332. Abstracts in Eng. and Italian (p. 332).
Additional KEY WORDS: priorities, fundamentals, environmental sciences, biospheric sciences, life sciences, biomedical sciences, geosciences, ecosystems, biosphere, organisms, levels of life systems, man-made impact, anthropogenic, effects, terrestrial, aquatic, research topics;

• On the biotic self-purification of aquatic ecosystems: elements of the theory.

Ostroumov SA.Dokl Biol Sci. 2004.2 comments
2015 Dec 02 00:41 a.m.1 of 2 people found this helpful
Full text free: https://www.researchgate.net/publication/200567576_On_the_biotic_self-purification_of_aquatic_ecosystems_elements_of_the_theory
ABSTRACT: On the biotic self-purification of aquatic ecosystems: elements of the theory. — Doklady Biological Sciences, 2004, Vol. 396, Numbers 1-6, pp. 206-211. This article presents a system of elements of a new theory of biotic maintaining the natural purification potential of aquatic ecosystems. The fundamental elements are formulated for a qualitative theory of the multifunctional (polyfunctional) role of the biota in improving water quality and doing self-purification of water in aquatic ecosystems. The elements of the theory covers the following: the sources of energy for the mechanisms of water self-purification; the main functional blocks of the system of self-purification; the system of the main processes that are involved; the analysis of the degree of participation of the main large taxa; the reliability of the mechanisms of water self-purification; regulation of the processes; the response of the mechanisms of water self-purification towards the external influences (man-made impacts, pollution); and some conclusions relevant to the practice of environment protection. In support of the theory, the results are given of the author's experiments which demonstrated the ability of some pollutants (surfactants, detergents, and some others) to inhibit the water filtration activity of aquatic invertebrate filter-feeders, namely, the bivalve mollusks, including mussels Mytilus galloprovincialis, Mytilus edulis, and oysters Crassostrea gigas. This paper is on the short list 'Top papers, books on aquatic ecology, ecotoxicology' at the largest global catalog, WorldCatalog [source: 5bio5.blogspot.com/2014/09/the-series-of-publications-on-list-of.html].

• Decreasing the measurable concentrations of Cu, Zn, Cd, and Pb in the water of the experimental systems containing Ceratophyllum demersum: the phytoremediation potential.

Ostroumov SA.Dokl Biol Sci. 2009.1 comment
2015 Dec 01 4:15 p.m.edited 0 of 1 people found this helpful
DOI:10.1134/S0012496609050159; In the presence of this aquatic, submerged, free-floating higher plant (rigid hornwort) in water system, it was occured that a decrease in concentrations of the four heavy metals (cadmium; copper; lead; zinc; Cu, Zn, Cd, and Pb) in the water medium accelerated. The aquatic macrophytes served as a factor to speed up the water purification (decontamination) process in the aquatic system. The method for measuring the heavy metals was stripping voltammetry. This paper is in the database of the United States Environmental Protection Agency (U.S.EPA), titled: Health & Environmental Research Online (HERO): hero.epa.gov/index.cfm?action=reference.details&reference_id=362778; FULL TEXT ONLINE FREE: https://www.researchgate.net/publication/40481671; KEYWORDS: the additional keywords for this paper in the database HERO: phytoremediation; polluted water; water pollution; water quality; Ceratophyllum demersum; Ceratophyllum; Ceratophyllaceae; Nymphaeales; dicotyledons; angiosperms; Spermatophyta; plants; eukaryotes; water composition and quality; Aquatic Biology and Ecology (MM300); Water Resources (PP200); Pollution and Degradation (PP600); Industrial Wastes and Effluents. The additional keywords: decontamination, aquatic, submerged, free-floating, higher plant, phytotechnology, ecotechnology, macrophytes, environmental toxicology, environmental chemistry, hornwort, rigid hornwort, coontail, coon's tail, stripping voltammetry; **

• Using rotifer population demographic parameters to assess impacts of the degradation products from trinitrotoluene phytoremediation.

Hitchcock DR.Ecotoxicol Environ Saf. 2003.1 comment
2015 Nov 30 3:38 p.m.
The results of this study are really interesting and innovative. I had some experience of studying phytoremediation with this plant species, Myriophyllum aquaticum (parrot feather). It has a high potential for decontamination of aquatic environment. This paper provided new facts in support of good prospects of using this plant species. The test system with rotifers (Brachionus calyciflorus) feeding on an algal species (Nannochloropsis spp.) is also an interesting feachure of this paper. This test system was successfully used also in this paper: www.researchgate.net/publication/200578650;
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• The aquatic macrophyte Ceratophyllum demersum immobilizes Au nanoparticles after their addition to water.

Ostroumov SA.Dokl Biol Sci. 2010.1 comment
2015 Nov 30 2:30 p.m.edited 1 of 2 people found this helpful
In the paper, it was discovered that the aquatic higher plant (macrophyte) hornwort (other English names: rigid hornwort, coontail, coon's tail; the Latin name: Ceratophyllum demersum) immobilized gold (Au) nanoparticles after their addition to water. This is the first time it was shown that the nanoparticles of gold (Au) in substantial amount bind to the living biomass of the aquatic macrophyte (namely, Ceratophyllum demersum). The concentrations of Au were measured in the samples of the phytomass using neutron activation analysis (NAA). As a result of the binding and/or immobilization of the nanoparticles, the amount of Au in the samples of the phytomass increased manifold (by a factor of 430) above the background level of gold in the plant tissues. The increase was by two orders of magnitude. The new data added some new information to the modern vision of the multifunctional role of the biota in the migration of elements in aquatic ecosystems, and water self-purification. Also, the result added new information to the studies of interactions of Au with organisms that may contribute to new biotechnologies (namely, phytotechnologies to remove heavy metals from water). DOI: 10.1134/S0012496610020158. https://www.researchgate.net/publication/44634488_The_aquatic_macrophyte_Ceratophyllum_demersum_immobilizes_Au_nanoparticles_after_their_addition_to_water;
Some additional key words: nanomaterials, sorption, biosorption, immobilization, environmental chemistry, biogeochemistry, water quality,
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• The synecological approach to the problem of eutrophication.

Ostroumov SA.Dokl Biol Sci. 2001.3 comments
2015 Nov 30 02:05 a.m.
Abstract of this paper, with some comment. ** The content of the article in short: A new solution to eutrophication. New concept of eutrophication control. Rating of this paper: In the top 25% of all articles scored by Altmetric. ** A new way of eutrophication control was suggested in the paper. The author suggested a new component of the measures against eutrophication: reducing the input of the chemical pollutants that weaken the potential of the filter-feeders for removing planktonic algae. The suggested way of controlling eutrophication is applicable to both freshwater and marine ecosystems. The article proposed a new idea, a new way of controlling eutrophication. The article is based on a series of the author's experiments with aquatic organisms (filter-feeders) that discovered and quantified relevant toxic effects of organic pollutants at sublethal concetrations. This article presented some new data to continue this line of research that is essential to the new solution to eutrophication. Among new facts that were reported in the paper, in addition to a substantial amount of relevant, related data previously obtained by the author: The liquid detergent (exemplified by the dish washing liquid, Fairy) 2 mg/L inhibited filtration by the bivalve mollusks, marine mussels (Mytilus galloprovincialis) within 2-23 min after addition, at temperature 22.5 ºС. This species of bivalve mollusks is one of key species in marine benthic ecosystems; it is one of ecological engineers that make a great impact on water quality. This is only one new fact that adds to many other facts (on how chemical pollutants can inhibit water filtration) discovered and reported by the author in other publications (papers and the book, Biological Effects of Surfactants). The paper presents a new approach to combat eutrophication.
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• [An amphiphilic substance inhibits the mollusk capacity to fliter phytoplankton cells from water].
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The term 'amphiphilic substance' here means 'a surfactant' or 'a surface active substance', namely, sodium dodecylsulfate (SDS).

• 2015 Nov 29 4:19 p.m.0 of 1 people found this helpful
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• The Mediterranean non-indigenous ascidian Polyandrocarpa zorritensis: Microbiological accumulation capability and environmental implications.
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I think that the importance of microbial pollution will increase in future. Therefore, I consider this paper useful and relevant.