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    Seasonal development dynamics of microbocenoses and complexes of invertebrates on overburden heaps of the Borodinskoye brown-coal mine (KATEK)
/ A. V. Bogorodskaya [et al.] // Geography and Natural Resources. - 2010. - Vol. 31, Is. 4. - P330-338, DOI 10.1016/j.gnr.2010.11.005 . - ISSN 1875-3728
Аннотация: We have investigated the seasonal-dynamics parameters of functioning of microbocenoses and invertebrate complexes on overburden heaps of different ages as well as the recultivation technology for of the Borodinskoye brown-coal mine. The 20-year-old overburden heap with typical natural reforestation and formation of a coarse-humus horizon was characterized by the largest balance of microbiological processes of organic matter destruction, and by high numbers and diversity of microarthropods. The youngest heaps are characterized by an unbalance between organic matter mineralization-immobilization processes and predominance of pioneer invertebrate groups in the community. В© 2010.

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Держатели документа:
Institute of Forest SB RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Bogorodskaya, A.V.; Krasnoshchekova, E.N.; Trefilova, O.V.; Shishikin, A.S.
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    Transformation of organic matter of the Larch forest soils in the northern taiga of Nizhne-Tungusskoe Plateau, central Siberia
/ L. V. Mukhortova, I. N. Bezkorovainaya // Mitigation and Adaptation Strategies for Global Change. - 2006. - Vol. 11, Is. 1. - P191-202, DOI 10.1007/s11027-006-1020-8 . - ISSN 1381-2386

Кл.слова (ненормированные):
Soil biota -- Soil C storage and structure -- Soil organic matter -- Transformation rate -- forest soil -- organic matter -- Eurasia -- Siberia -- Bryophyta -- Invertebrata -- Larix

Аннотация: The evaluation of biospheric role of the boreal forests in the accumulation of carbon is connected with the evaluation of organic matter (OM) pool in soils. The research sites were larch forests, they are situated on Nizhne-Tungusskoe Plateau. Larch forests of feather-moss and lichen types (110 and 380 years old) were formed on 'ochric podbur' soils. Litter stocks are 3.5-4.5 kg m-2 with thickness 10-25 cm. Cryomezomorphic northern taiga soils contains 38-73 t (carbon) ha-1. Pool of fast mineralized OM has average value 38.1 t (carbon) ha-1, including 20.5 and 6.4 t (Carbon) ha-1 of labile compounds on surface and in the soil, and 11.2 t (carbon) ha-1 of mobile OM. Microbial mass reaches 1.78-3.47 t (carbon) ha-1, its proportion is 3.6-4.9% of the total OM carbon. Zoomass of feather-moss larch forest is 0.20-0.61 * 10-2, in lichen larch forest -0.01-0.07 * 10-2 t (carbon) ha -1. A pool of resistant to biological decomposition and bonded to mineral soil matrix OM is 17.7 t (carbon) ha-1 and it varies from 18.6 to 29.0 in feather-moss larch forest, and from 6.4 to 17.0 t (carbon) ha-1 in lichen larch forest. Two-years field experiment has been performed to determine transformation rates of various plant litter fractions and to clarify the role of soil biota in these processes. The results showed participation of all biota groups in the decomposition of plant residues caused weight loss of larch-needles and root mortmass. Isolation of organic matter from all-size invertebrate groups leads to some decrease of decomposition activity. В© Springer 2006.

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Держатели документа:
Institute of Forest, Russian Academy of Sciences, Siberian Branch Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Mukhortova, L.V.; Bezkorovainaya, I.N.
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    The comparative toxicity to soil invertebrates of natural chemicals and their synthetic analogues
/ J. Whitaker [et al.] // Chemosphere. - 2009. - Vol. 76, Is. 3. - P345-352, DOI 10.1016/j.chemosphere.2009.03.060 . - ISSN 0045-6535

Кл.слова (ненормированные):
Anthraquinone -- Ecotoxicity -- Napthoquinone -- Risk assessment -- Anthraquinone -- Comparative data -- Comparative toxicity -- Differential sensitivity -- Earthworm reproduction -- Ecotoxicity -- Enchytraeids -- Extrapolation methods -- Invertebrate species -- Juglone -- Mode of toxic actions -- Naphthoquinone -- Napthoquinone -- Napthoquinones -- Quinizarin -- Soil invertebrates -- Synthetic analogues -- Synthetic chemicals -- Toxic chemicals -- Toxicity test -- Approximation theory -- Chemicals -- Extrapolation -- Functional groups -- Ketones -- Risk assessment -- Risk management -- Risk perception -- Toxicity -- 1,4 naphthoquinone -- 1,4 naphthoquinone derivative -- anthraquinone derivative -- emodin -- juglone -- quinizarin -- comparative study -- earthworm -- ecotoxicology -- hypothesis testing -- invertebrate -- mite -- reproduction -- risk assessment -- soil microorganism -- sublethal effect -- survival -- toxicity test -- article -- collembolan -- comparative study -- controlled study -- earthworm -- enchytraeid -- invertebrate -- mite -- nonhuman -- predictive validity -- reproduction -- soil invertebrate -- soil organism -- survival -- toxicity -- toxicity testing -- Animals -- Anthraquinones -- Ecotoxicology -- Emodin -- Naphthoquinones -- Oligochaeta -- Organic Chemicals -- Reproduction -- Risk Assessment -- Soil -- Acari -- Enchytraeidae -- Hypoaspis aculeifer -- Invertebrata

Аннотация: The introduction of Registration, Evaluation and Authorisation of Chemicals (REACH), requires companies to register and risk assess all substances produced or imported in volumes of >1 tonne per year. Extrapolation methods which use existing data for estimating the effects of chemicals are attractive to industry, and comparative data are therefore increasingly in demand. Data on natural toxic chemicals could be used for extrapolation methods such as read-across. To test this hypothesis, the toxicity of natural chemicals and their synthetic analogues were compared using standardised toxicity tests. Two chemical pairs: the napthoquinones, juglone (natural) and 1,4-naphthoquinone (synthetic); and anthraquinones, emodin (natural) and quinizarin (synthetic) were chosen, and their comparative effects on the survival and reproduction of collembolans, earthworms, enchytraeids and predatory mites were assessed. Differences in sensitivity between the species were observed with the predatory mite (Hypoaspis aculeifer) showing the least sensitivity. Within the chemical pairs, toxicity to lethal and sub-lethal endpoints was very similar for the four invertebrate species. The exception was earthworm reproduction, which showed differential sensitivity to the chemicals in both naphthoquinone and anthraquinone pairs. Differences in toxicity identified in the present study may be related to degree of exposure and/or subtle differences in the mode of toxic action for the chemicals and species tested. It may be possible to predict differences by identifying functional groups which infer increased or decreased toxicity in one or other chemical. The development of such techniques would enable the use of read-across from natural to synthetic chemicals for a wider group of compounds. В© 2009 Elsevier Ltd. All rights reserved.

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Держатели документа:
Centre for Ecology and Hydrology, Lancaster Environment Centre, Library Avenue, Bailrigg, Lancaster, LA1 4AP, United Kingdom
Division of Zoology, School of Animal and Microbial Sciences, University of Reading, Reading, RG6 6AJ, United Kingdom
WRc PLC, Blagrove Park, Swindon, SN5 8YF, United Kingdom
Syngenta, Jealott's Hill International Research Centre, Bracknell, RG42 6EY, United Kingdom
Reckitt Benckiser, Dansom Lane, Hull, HU8 7DS, United Kingdom

Доп.точки доступа:
Whitaker, J.; Chaplow, J.S.; Potter, E.; Scott, W.A.; Hopkin, S.; Harman, M.; Sims, I.; Sorokin, N.
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