Energy flow and partitioning in selected man-managed and natural ecosystems

Coleman, David C.; Andrews, Russel D.; Ellis, James E.; Singh, Joginder

doi:10.1016/0304-3746(76)90099-8

Cited by 74 publications

(15 citation statements)

References 16 publications

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“…1975), 96.5% in the coastal tundra of Barrow, Alaska (MacLean, in press), and 98% in a lightly grazed grassland (Coleman et a!. In the first, the values exceed 96%; 99.7% in a mesic deciduous forest (Reichle et a!.…”

Section: Peat and Vegetation Nutrient Statusmentioning

confidence: 99%

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Structure and Function of Two Antarctic Terrestrial Moss Communities

Davis¹

1981

Ecological Monographs

118

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Two bryophyte-dominated communities in the maritime Antarctic are analyzed in terms of the transfer and standing crops of organic matter within them. A moss turf dominated by Polytrichum alpestre and Chorisodontium aciphyllum and a moss carpet composed of Calliergon sarmentosum, Calliergidium austro-stramineum, and Drepanocladus uncinatus with the liverwort Cephaloziella varians were investigated at Signy Island, South Orkney Islands. Biomass, respiration, and production data for the primary producers (mosses, lichens, liverworts, and algae), for the fauna (Protozoa, Rotifera, Tardigrada, Nematoda, Acari, and Collembola), and for the microflora were synthesized, and annual rates of consumption, egestion, assimilation, and production were derived. The two communities showed similar levels of productivity, trophic structure, and efficiencies of organic matter transfer, but different Collembola and Acari standing crops, turnover of mosses, and accumulation of dead organic matter. These features are discussed in relation to the role of biotic and abiotic variables in determining community structure and function. 15 79 PC 44* 1564 r---+ c 113 95* M 56 PC M 56 * ~ RE 7 44* R~ 7

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Section: Peat and Vegetation Nutrient Statusmentioning

confidence: 99%

“…In the first, the values exceed 96%; 99.7% in a mesic deciduous forest (Reichle et a!. 1975), 96.5% in the coastal tundra of Barrow, Alaska (MacLean, in press), and 98% in a lightly grazed grassland (Coleman et a!. 1976).…”

Section: Peat and Vegetation Nutrient Statusmentioning

confidence: 99%

Structure and Function of Two Antarctic Terrestrial Moss Communities

Davis¹

1981

Ecological Monographs

118

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“…Plant-derived C enters the soil as plant litter and root exudates (Coleman et al 1976;Butler et al 2003), and is released as CO 2 by the respiration of roots and soil microorganisms. As much as 50% of soil CO 2 efflux is rootderived (Rochette and Angers 1999;Kuzyakov and Domanski 2002), with contributions coming directly from root respiration and indirectly from heterotrophic respiration of C originating as root exudates, exfoliates (sloughed cells and root hairs), and root debris (Ingham et al 1985;Cheng 1996;Luo et al 1996;Kuzyakov and Domanski 2002;Langley et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Growth, nutrition, and soil respiration of a mycorrhiza-defective tomato mutant and its mycorrhizal wild-type progenitor

Cavagnaro

Langley

Jackson

et al. 2008

Functional Plant Biol.

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Abstract. The effects of colonisation of roots by arbuscular mycorrhizal fungi (AMF) on soil respiration, plant growth, nutrition, and soil microbial communities were assessed using a mycorrhiza-defective tomato (Solanum lycopersicum L.) mutant and its mycorrhizal wild-type progenitor. Plants were grown in rhizocosms in an automated respiration monitoring system over the course of the experiment (79 days). Soil respiration was similar in the two tomato genotypes, and between P treatments with plants. Mycorrhizal colonisation increased P and Zn content and decreased root biomass, but did not affect aboveground plant biomass. Soil microbial biomass C and soil microbial communities based on phospholipid fatty acid (PLFA) analysis were similar across all treatments, suggesting that the two genotypes differed little in their effect on soil activity. Although approximately similar amounts of C may have been expended belowground in both genotypes, they may have differed in the relative C allocation to root construction v. respiration. Further, net soil respiration did not differ between the two tomato genotypes, but root dry weight was lower in mycorrhizal roots, and respiration of mycorrhizal roots per unit dry weight was higher than nonmycorrhizal roots. This indicates that the AM contribution to soil respiration may indeed be significant, and nutrient uptake per unit C expenditure belowground in this experiment appeared to be higher in mycorrhizal plants.

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“…To minimize the error associated with aggregating fine-scale relationships (e.g., a daily soil-CO2 flux model) to a coarser (e.g., monthly) resolution, Rastetter et al [1992] have suggested several transformation approaches. Many models have been developed to describe the relationship between daily soil-CO2 fluxes and temperature and/or moisture at specific sites [Reiners, 1968;Kirita, 1971;Froment, 1972;Anderson, 1973;Edwards, 1975;Coleman et al, 1976;Reinke et al, 1981;Nakane et al, 1984;Tsutsumi et al, 1985;Schlentner and Van Cleve, 1985;Rajvanshi and Gupta, 1986;Gordon et al, 1987;Carlyle and Than, 1988;Norman et al, 1992]. Although any of these models may be used to develop regional estimates, less aggregation error may be introduced if more "generic" relationships between soil-CO 2 fluxes and climatic factors are used to develop estimates of regional fluxes.…”

Section: Introductionmentioning

confidence: 99%

Aspects of spatial and temporal aggregation in estimating regional carbon dioxide fluxes from temperate forest soils

Kicklighter¹,

Melillo²,

Peterjohn³

et al. 1994

J. Geophys. Res.

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We examine the influence of aggregation errors on developing estimates of regional soil‐CO2 flux from temperate forests. We find daily soil‐CO2 fluxes to be more sensitive to changes in soil temperatures (Q10 = 3.08) than air temperatures (Q10 = 1.99). The direct use of mean monthly air temperatures with a daily flux model underestimates regional fluxes by approximately 4%. Temporal aggregation error varies with spatial resolution. Overall, our calibrated modeling approach reduces spatial aggregation error by 9.3% and temporal aggregation error by 15.5%. After minimizing spatial and temporal aggregation errors, mature temperate forest soils are estimated to contribute 12.9 Pg C yr−1 to the atmosphere as carbon dioxide. Georeferenced model estimates agree well with annual soil‐CO2 fluxes measured during chamber studies in mature temperate forest stands around the globe.

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Energy flow and partitioning in selected man-managed and natural ecosystems

Cited by 74 publications

References 16 publications

Structure and Function of Two Antarctic Terrestrial Moss Communities

Structure and Function of Two Antarctic Terrestrial Moss Communities

Growth, nutrition, and soil respiration of a mycorrhiza-defective tomato mutant and its mycorrhizal wild-type progenitor

Aspects of spatial and temporal aggregation in estimating regional carbon dioxide fluxes from temperate forest soils

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