Tables and procedures for estimating weights of some Appalachian hardwoods

Wiant, Harry V.

doi:10.33915/agnic.659

Cited by 22 publications

(13 citation statements)

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“…where a and b are species-specific coefficients developed from data collected at UMBS (Koerper, 1977;Cooper, 1981;A. W. Cooper, personal communication) or obtained from published reports from the Great Lakes states and eastern North America (Wiant et al, 1977;Ker, 1980;Young et al, 1980;Schmitt & Grigal, 1981;Crow & Erdmann, 1983;Hocker & Early, 1983;Perala & Alban, 1994;Ter-Michaelian & Korzukhin, 1997). All woody plants with D41 cm were measured.…”

Section: Aboveground Wood and Understory Massmentioning

confidence: 99%

The legacy of harvest and fire on ecosystem carbon storage in a north temperate forest

Gough

Vogel

Harrold

et al. 2007

Global Change Biology

173

135

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Forest harvesting and wildfire were widespread in the upper Great Lakes region of North America during the early 20th century. We examined how long this legacy of disturbance constrains forest carbon (C) storage rates by quantifying C pools and fluxes after harvest and fire in a mixed deciduous forest chronosequence in northern lower Michigan, USA. Study plots ranged in age from 6 to 68 years and were created following experimental clear-cut harvesting and fire disturbance. Annual C storage was estimated biometrically from measurements of wood, leaf, fine root, and woody debris mass, mass losses to herbivory, soil C content, and soil respiration. Maximum annual C storage in stands that were disturbed by harvest and fire twice was 26% less than a reference stand receiving the same disturbance only once. The mechanism for this reduction in annual C storage was a long-lasting decrease in site quality that endured over the 62-year timeframe examined. However, during regrowth the harvested and burned forest rapidly became a net C sink, storing 0.53 Mg C ha À1 yr À1 after 6 years. Maximum net ecosystem production (1.35 Mg C ha À1 yr À1 ) and annual C increment (0.95 Mg C ha À1 yr À1 ) were recorded in the 24-and 50-year-old stands, respectively. Net primary production averaged 5.19 Mg C ha À1 yr À1 in experimental stands, increasing by o10% from 6 to 50 years. Soil heterotrophic respiration was more variable across stand ages, ranging from 3.85 Mg C ha À1 yr À1 in the 6-year-old stand to 4.56 Mg C ha À1 yr À1 in the 68-year-old stand. These results suggest that harvesting and fire disturbances broadly distributed across the region decades ago caused changes in site quality and successional status that continue to limit forest C storage rates.

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Section: Aboveground Wood and Understory Massmentioning

confidence: 99%

The legacy of harvest and fire on ecosystem carbon storage in a north temperate forest

Gough

Vogel

Harrold

et al. 2007

Global Change Biology

173

135

View full text Add to dashboard Cite

show abstract

“…Their work also reflected a renewed interest in the concept of skills (Altman, 1976, Ashley & Ammerman, 1977, Kirby, 1979, McKinlay 1976, Pratzner, 1977, Sjogren, 1977, and Wiant, 1977.…”

Section: Prior Researchmentioning

confidence: 96%

“…This role of the subject as an active participant in skill identification is a key element in Bolles' skills analysis process. Building on the work which was begun by the National Center for Research in Vocational Education (Sjogren, 1977, Ashley & Ammerman, 1977, and Wiant, 1977, a skill was defined as &dquo;a goal-directed behavior which has been or can be strengthened through practice&dquo; II (Maze, 1983). Within the broad arena of behavior that is subject to influence by practice, Bloom (1956) identified three domains: the cognitive, the affective, and the psychomotor.…”

Section: Prior Researchmentioning

confidence: 99%

Toward a Taxonomy of Self-Assessable Skills

Mayall

Maze²

1985

Journal of Career Development

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“…Mature tree aboveground biomass (AGB) was calculated from published allometric equations (Clark et al, 1985;Clark et al, 1986a,b;Hahn, 1984;Schnell, 1976;Wiant et al, 1977) using field measured values for each species (Table 1). For species with no existing published allometric equation, we used equations for a similar species.…”

Section: Carbon Storage Assessmentmentioning

confidence: 99%