The relationship between the aboveground dry weight and diameter for a wide size range of erect land plants

Freedman, Bill

doi:10.1139/b84-323

Cited by 24 publications

(8 citation statements)

References 17 publications

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“…The good fit of the logarithmic model in these species is not surprising, as this model has previously been shown to predict aboveground biomass accurately in a variety of woody plant species (Brown, 1976;Smith and Brand, 1983;Freedman, 1984;Buech and Rugg, 1989;Paton et al, 1998). However, the logarithmic model generally gives under-predictions, and thus a correction factor (Sprugel, 1983) to be applied in the back-transformation is given for each of the models (a 0 in Table 3).…”

Section: Model Developmentmentioning

confidence: 88%

Estimating aboveground biomass of broadleaved woody plants in the understory of Florida Keys pine forests

Sah¹,

Ross²,

Koptur³

et al. 2004

Forest Ecology and Management

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Section: Model Developmentmentioning

confidence: 88%

Estimating aboveground biomass of broadleaved woody plants in the understory of Florida Keys pine forests

Sah¹,

Ross²,

Koptur³

et al. 2004

Forest Ecology and Management

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“…The latter was estimated for trees and shrubs using equations relating above-ground dry biomass to stem diameter (Freedman, 1983;. A generalized equation was used for trees with diameter ≥6.0 cm, and another for shrubs with a diameter of <6.0 cm.…”

Section: Calculationsmentioning

confidence: 99%

Plant communities of selected urbanized areas of Halifax, Nova Scotia, Canada

Turner

Lefler

Freedman

2005

Landscape and Urban Planning

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“…Aboveground biomass for the forest was determined by measuring the diameter of all trees <' :: 5 em dbh (taken 1.4 m above ground surface) within 33 50-m 2 circular plots adjacent to but beyond the browse zone of the beaver ponds, and converting to biomass using regression equations developed by Freedman (1983). The biomass of shrubs and herbs was negligible in comparison to tree biomass and was not measured.…”

Section: Site Characterizationmentioning

confidence: 99%

Beaver Influences on the Long‐Term Biogeochemical Characteristics of Boreal Forest Drainage Networks

Naiman

Pinay²,

Johnston

et al. 1994

Ecology

228

136

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Beaver (Castor canadensis) affect biogeochemical cycles and the accumulation and distribution of chemical elements over time and space by altering the hydrologic regime. Aerial photograph analyses of beaver activities on the 298—km2 Kabetogama Peninsula, Minnesota, were coupled with site—specific studies of soil and pore water concentrations of nutrients (nitrogen, phosphorus) and other ions (potassium, calcium, magnesium, iron, sulfate, chloride), nitrogen cycling processes (nitrogen fixation and denitrification), and biophysical environment variables (vegetation, temperature, organic matter, soil structure, pH, and oxidation—reduction potential). Our analysis demonstrate that beaver influence the distribution, standing stocks, and availability of chemical elements by hydrologically induced alteration of biogeochemical pathways and by shifting element storage from forest vegetation to sediments and soils. Over the 63 yr of aerial photo records (1927—1988), beaver converted 13% of the peninsula to meadows and ponds. Elemental concentrations in soils (in micrograms per cubic centimetre) and in pore water (in milligrams per litre) revealed complex patterns within and among the principal hydrologic zones (e.g., forest, moist meadow, wet meadow, pond, stream). Principal components analysis (PCA) suggested that anaerobic conditions caused by saturation of soil by water was the fundamental control over subsequent alterations of biogeochemical pathways. Although few clear statistical trends were detected for mass— or volume—specific elemental concentrations among habitats, organic horizon (O and A) depths were greatest in the wet meadows and ponds (@>15 cm), causing the standing stocks of chemical elements to be greatest there. We argue that the net effect of beaver activities has been to translocate chemical elements from the originally inundated upland forest vegetation to downstream communities and to pond sediments. As the upland vegetation dies and decays after dam construction, only a portion of the chemical elements are exported downstream (except for calcium and magnesium) or returned to the atmosphere (C and N only ). Consequently, the organic horizons of pond sediments accumulate substantial standing stocks of chemical elements that are available for vegetative growth when dams fail, the ponds drain, and meadows are formed. Since 1927 beaver activities have augmented the standing stock of chemical elements in the organic horizons by 20—295%, depending on the element. These influences are spatially extensive and long lasting, affecting fundamental environmental characteristics of boreal forest drainage networks for decades to centuries.

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The relationship between the aboveground dry weight and diameter for a wide size range of erect land plants

Cited by 24 publications

References 17 publications

Estimating aboveground biomass of broadleaved woody plants in the understory of Florida Keys pine forests

Estimating aboveground biomass of broadleaved woody plants in the understory of Florida Keys pine forests

Plant communities of selected urbanized areas of Halifax, Nova Scotia, Canada

Beaver Influences on the Long‐Term Biogeochemical Characteristics of Boreal Forest Drainage Networks

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