Mineral cycling in soil and litter arthropod food chains. Progress report, November 1, 1979-October 31, 1980
Recent progress and current status are reported for research concerned with mineral element dynamics in soil arthropod food chains. Research is performed within the larger context of terrestrial decomposition systems, in which soil arthropods may act as regulators of nutrient dynamics during decomposition. Research is measuring rates of nutrient accumulation and excretion by using radioactive tracer techniques with radioactive analogs of nutrients. Experimental measurement of radioactive tracer excretion and nutrient element pools are reported for soil microarthropods, using new methods of counting and microprobe elemental analysis. Research on arthropod-fungal relations is utilizing high-efficiency extraction followed by dissection of 13 x 13 cm soil blocks. A two-component excretion model is reported for Cobalt-60 in earthworms (Eisenia foetida), demonstrating that no assimilation of cobalt occurs from the mineral soil fraction but is entirely from organic matter. Collection of data sets on soil arthropod communities and abundances is completed.
- Research Organization:
- Georgia Univ., Athens (USA). Dept. of Entomology
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AS09-76EV00641
- OSTI ID:
- 5151875
- Report Number(s):
- DOE/EV/00641-37; TRN: 80-014797
- Country of Publication:
- United States
- Language:
- English
Similar Records
Mineral cycling in soil and litter arthropod food chains. Annual progress report, February 1, 1983-January 31, 1984
Mineral cycling in soil and litter arthropod food chains. Progress report, November 1, 1981-January 31, 1983
Related Subjects
ARTHROPODS
FOOD CHAINS
MINERAL CYCLING
SOILS
ANNELIDS
COBALT 60
DECOMPOSITION
EXCRETION
FOREST LITTER
MATHEMATICAL MODELS
RADIONUCLIDE KINETICS
ANIMALS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOLOGICAL MATERIALS
CHEMICAL REACTIONS
CLEARANCE
COBALT ISOTOPES
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
INVERTEBRATES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MATERIALS
MINUTES LIVING RADIOISOTOPES
NUCLEI
ODD-ODD NUCLEI
RADIOISOTOPES
YEARS LIVING RADIOISOTOPES
510200* - Environment
Terrestrial- Chemicals Monitoring & Transport- (-1989)
510100 - Environment
Terrestrial- Basic Studies- (-1989)