Effects of CO[sub 2] and climate change on forest trees: Soil biology and enzymology
Samples of Teracosm soils were analyzed shortly after initial setup to determine whether initial conditions were equivalent and matched expected values for local soils. Total and active fungal biomass, active bacterial biomass and protozoan numbers were reduced, with greatest decreases occurring in...
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| creator | Moldenke, A.R. Baumeister, N. Caldwell, B.A. Griffith, R. Ingham, E.R. Wernz, J. Johnson, M.G. Rygiewicz, P.T. Tingey, D.T. |
| description | Samples of Teracosm soils were analyzed shortly after initial setup to determine whether initial conditions were equivalent and matched expected values for local soils. Total and active fungal biomass, active bacterial biomass and protozoan numbers were reduced, with greatest decreases occurring in the A horizon. No effect was observed on total bacterial biomass, nematode or anthropod densities, but changes in nematode and arthropod species composition occurred. Significant differences in total density and species composition occurred between the enclosed Teracosms and the open controls. Arthropod and nematode community structure in the three altitudinal field sites had significantly diverged. No significant differences in activities of key soil enzymes in C- and N-cycling (acid phosphatase, protease, B-glucosidase, phenol oxidase and peroxidase) were found between initial samples relative to treatment, but all levels were significantly difference relative to depth in soil profile. Activities were within ranges previously observed in forests of the Pacific Northwest. |
| format | Conference Proceeding |
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Total and active fungal biomass, active bacterial biomass and protozoan numbers were reduced, with greatest decreases occurring in the A horizon. No effect was observed on total bacterial biomass, nematode or anthropod densities, but changes in nematode and arthropod species composition occurred. Significant differences in total density and species composition occurred between the enclosed Teracosms and the open controls. Arthropod and nematode community structure in the three altitudinal field sites had significantly diverged. No significant differences in activities of key soil enzymes in C- and N-cycling (acid phosphatase, protease, B-glucosidase, phenol oxidase and peroxidase) were found between initial samples relative to treatment, but all levels were significantly difference relative to depth in soil profile. 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Total and active fungal biomass, active bacterial biomass and protozoan numbers were reduced, with greatest decreases occurring in the A horizon. No effect was observed on total bacterial biomass, nematode or anthropod densities, but changes in nematode and arthropod species composition occurred. Significant differences in total density and species composition occurred between the enclosed Teracosms and the open controls. Arthropod and nematode community structure in the three altitudinal field sites had significantly diverged. No significant differences in activities of key soil enzymes in C- and N-cycling (acid phosphatase, protease, B-glucosidase, phenol oxidase and peroxidase) were found between initial samples relative to treatment, but all levels were significantly difference relative to depth in soil profile. 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POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. 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Total and active fungal biomass, active bacterial biomass and protozoan numbers were reduced, with greatest decreases occurring in the A horizon. No effect was observed on total bacterial biomass, nematode or anthropod densities, but changes in nematode and arthropod species composition occurred. Significant differences in total density and species composition occurred between the enclosed Teracosms and the open controls. Arthropod and nematode community structure in the three altitudinal field sites had significantly diverged. No significant differences in activities of key soil enzymes in C- and N-cycling (acid phosphatase, protease, B-glucosidase, phenol oxidase and peroxidase) were found between initial samples relative to treatment, but all levels were significantly difference relative to depth in soil profile. Activities were within ranges previously observed in forests of the Pacific Northwest.</abstract><cop>United States</cop></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0012-9623 |
| ispartof | Bulletin of the Ecological Society of America; (United States), 1994, Vol.75:2 |
| issn | 0012-9623 2327-6096 |
| language | eng |
| recordid | cdi_osti_scitechconnect_7272097 |
| source | Jstor Complete Legacy; Wiley Online Library Journals Frontfile Complete; Free E- Journals |
| subjects | 560400 -- Other Environmental Pollutant Effects ANIMALS ARTHROPODS ASCHELMINTHES BACTERIA BIOLOGICAL EFFECTS BIOLOGY CARBON COMPOUNDS CARBON DIOXIDE CARBON OXIDES CHALCOGENIDES CLIMATIC CHANGE FUNGI GROWTH HELMINTHS INVERTEBRATES MICROORGANISMS NEMATODES OXIDES OXYGEN COMPOUNDS PARASITES PLANTS 560300 -- Chemicals Metabolism & Toxicology PROTOZOA RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT SOILS SPECIES DIVERSITY |
| title | Effects of CO[sub 2] and climate change on forest trees: Soil biology and enzymology |
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