June S Clark
Biographic Data
| ID | 159598 |
|---|---|
| NAME | June S Clark |
| GIVEN NAMES | June S |
| FAMILY NAME | Clark |
| SIGNATURE | CLARK J S |
| AFFILIATIONS | Duke University |
| ORCID | 0000-0002-5677-9733 |
| VERIFIED | Yes |
| TOTAL WORKS | 11 |
| TOTAL CITATIONS | 63 |
| AUTHOR COUNT | 11 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1972 |
| LATEST PUBLICATION YEAR | 2020 |
| H-INDEX | 3 |
Models for Ecological Data
Medical Notes on Climate, Diseases, Hospitals, and Medical Schools, in France, Italy, and Switzerland
Charcoal production, dispersal, and deposition from the Fort Providence experimental fire
The relationship between charcoal production from fires and charcoal deposition in lakes is poorly understood, which limits the interpretation of sediment charcoal records. This calibration study assessed charcoal particle production, size, and transport during the International Crown Fire Modelling Experiment (ICFME) and compared fossil charcoal particle accumulation from 16 lakes in boreal forests of North America. Particle accumulation average…
Relationships between charcoal particles in air and sediments in west-central Siberia
Production and size of charred particles determine transport and deposition in lakes. Lack of such data is a principal obstacle to interpretation of past fire from charcoal profiles. Our two-part analysis includes a calibration study, to assess charred-particle production and transport during fire, and a study of charred particles in sediment. The calibration step establishes the magnitude and size distribution of particle accumulation from traps…
Estimating the mass flux of charcoal from sedimentary records
Reconstructing past fire requires ways to compare concentration estimates obtained by different charcoal analysis methods. These methods estimate concentrations from area measurements or particle counts on pollen slides, on sieves, and on thin sections, and they do so at different magnifications. Depending on particle properties, each method might give substantially different results. Image analysis of charred particles in thin sections of lake s…
Particle-Size Evidence for Source Areas of Charcoal Accumulation in Late Holocene Sediments of Eastern North American Lakes
Two methods of analyzing charcoal in sediment reveal changes in charcoal accumulation across temperate eastern North America during the last several hundred years. In one method the analyst counts mostly small particles that reflect regional emissions; in the other, the analyst counts only larger particles derived mostly from such local sources as catchment fires. We used these methods to compare charcoal accumulation at 14 lakes from the prairie…
Climate and Indian effects on southern Ontario forests
Clark and Royall (1994) questioned the interpretation, drawn from a simulation model, that climatic cooling was responsible for the demise of typical northern hardwoods taxa and replacement with taxa that require fire or soil disturbance, Pinus and Quercus. Those questions were raised because the model predictions did not well describe the data, the ecology of the taxa is not consistent with the interpretation, the other sites in the region do no…
Transformation of a northern hardwood forest by aboriginal (Iroquois) fire
Ecologists have long debated whether Indian burning had important impacts on presettlement forests. We obtained stratigraphic evidence for fire using charcoal analysis of southern Ontario lake sediments. The record spans a period of Iroquois occupation when cultivation coincides with pollen evidence for transition from northern hardwoods to white pine/oak forests. Charcoal data reveal that this transition was attended by increased charcoal accumu…
Stratigraphic Charcoal Analysis on Petrographic Thin Sections
Results of stratigraphic charcoal analysis from thin sections of varved lake sediments have been compared with fire scars on red pine trees in northwestern Minnesota to determine if charcoal data accurately reflect fire regimes. Pollen and opaque-spherule analyses were completed from a short core to confirm that laminations were annual over the last 350 yr. A good correspondence was found between fossil-charcoal and fire-scar data. Individual fir…
Particle Motion and the Theory of Charcoal Analysis
Principles from particle-motion physics were applied to recurring problems of the interpretation of stratigraphic charcoal data: (1) fires within catchments of lakes often produce no record in fossil-charcoal curves and (2) periods characterized by no local fire (e.g., 20th-century fire suppression) often display as much charcoal as times when local fire was frequent. Quantitative theory on source area, transport, deposition, and sampling of char…
Marriage and Methadone
June S. Clark, William C. Capel, Bernard M. Goldsmith, Gordon T. Stewart, Marriage and Methadone: Spouse Behavior Patterns in Heroin Addicts Maintained on Methadone, Journal of Marriage and Family, Vol. 34, No. 3 (Aug., 1972), pp. 496-502
Relationships between charcoal particles in air and sediments in west-central Siberia
Production and size of charred particles determine transport and deposition in lakes. Lack of such data is a principal obstacle to interpretation of past fire from charcoal profiles. Our two-part analysis includes a calibration study, to assess charred-particle production and transport during fire, and a study of charred particles in sediment. The calibration step establishes the magnitude and size distribution of particle accumulation from traps…
Transformation of a northern hardwood forest by aboriginal (Iroquois) fire
Ecologists have long debated whether Indian burning had important impacts on presettlement forests. We obtained stratigraphic evidence for fire using charcoal analysis of southern Ontario lake sediments. The record spans a period of Iroquois occupation when cultivation coincides with pollen evidence for transition from northern hardwoods to white pine/oak forests. Charcoal data reveal that this transition was attended by increased charcoal accumu…
Estimating the mass flux of charcoal from sedimentary records
Reconstructing past fire requires ways to compare concentration estimates obtained by different charcoal analysis methods. These methods estimate concentrations from area measurements or particle counts on pollen slides, on sieves, and on thin sections, and they do so at different magnifications. Depending on particle properties, each method might give substantially different results. Image analysis of charred particles in thin sections of lake s…
Marriage and Methadone
June S. Clark, William C. Capel, Bernard M. Goldsmith, Gordon T. Stewart, Marriage and Methadone: Spouse Behavior Patterns in Heroin Addicts Maintained on Methadone, Journal of Marriage and Family, Vol. 34, No. 3 (Aug., 1972), pp. 496-502
Marriage and Methadone
June S. Clark, William C. Capel, Bernard M. Goldsmith, Gordon T. Stewart, Marriage and Methadone: Spouse Behavior Patterns in Heroin Addicts Maintained on Methadone, Journal of Marriage and Family, Vol. 34, No. 3 (Aug., 1972), pp. 496-502
Stratigraphic Charcoal Analysis on Petrographic Thin Sections
Results of stratigraphic charcoal analysis from thin sections of varved lake sediments have been compared with fire scars on red pine trees in northwestern Minnesota to determine if charcoal data accurately reflect fire regimes. Pollen and opaque-spherule analyses were completed from a short core to confirm that laminations were annual over the last 350 yr. A good correspondence was found between fossil-charcoal and fire-scar data. Individual fir…
Particle Motion and the Theory of Charcoal Analysis
Principles from particle-motion physics were applied to recurring problems of the interpretation of stratigraphic charcoal data: (1) fires within catchments of lakes often produce no record in fossil-charcoal curves and (2) periods characterized by no local fire (e.g., 20th-century fire suppression) often display as much charcoal as times when local fire was frequent. Quantitative theory on source area, transport, deposition, and sampling of char…
Particle-Size Evidence for Source Areas of Charcoal Accumulation in Late Holocene Sediments of Eastern North American Lakes
Two methods of analyzing charcoal in sediment reveal changes in charcoal accumulation across temperate eastern North America during the last several hundred years. In one method the analyst counts mostly small particles that reflect regional emissions; in the other, the analyst counts only larger particles derived mostly from such local sources as catchment fires. We used these methods to compare charcoal accumulation at 14 lakes from the prairie…
Climate and Indian effects on southern Ontario forests
Clark and Royall (1994) questioned the interpretation, drawn from a simulation model, that climatic cooling was responsible for the demise of typical northern hardwoods taxa and replacement with taxa that require fire or soil disturbance, Pinus and Quercus. Those questions were raised because the model predictions did not well describe the data, the ecology of the taxa is not consistent with the interpretation, the other sites in the region do no…
Transformation of a northern hardwood forest by aboriginal (Iroquois) fire
Ecologists have long debated whether Indian burning had important impacts on presettlement forests. We obtained stratigraphic evidence for fire using charcoal analysis of southern Ontario lake sediments. The record spans a period of Iroquois occupation when cultivation coincides with pollen evidence for transition from northern hardwoods to white pine/oak forests. Charcoal data reveal that this transition was attended by increased charcoal accumu…
Estimating the mass flux of charcoal from sedimentary records
Reconstructing past fire requires ways to compare concentration estimates obtained by different charcoal analysis methods. These methods estimate concentrations from area measurements or particle counts on pollen slides, on sieves, and on thin sections, and they do so at different magnifications. Depending on particle properties, each method might give substantially different results. Image analysis of charred particles in thin sections of lake s…
Relationships between charcoal particles in air and sediments in west-central Siberia
Production and size of charred particles determine transport and deposition in lakes. Lack of such data is a principal obstacle to interpretation of past fire from charcoal profiles. Our two-part analysis includes a calibration study, to assess charred-particle production and transport during fire, and a study of charred particles in sediment. The calibration step establishes the magnitude and size distribution of particle accumulation from traps…
Charcoal production, dispersal, and deposition from the Fort Providence experimental fire
The relationship between charcoal production from fires and charcoal deposition in lakes is poorly understood, which limits the interpretation of sediment charcoal records. This calibration study assessed charcoal particle production, size, and transport during the International Crown Fire Modelling Experiment (ICFME) and compared fossil charcoal particle accumulation from 16 lakes in boreal forests of North America. Particle accumulation average…
Medical Notes on Climate, Diseases, Hospitals, and Medical Schools, in France, Italy, and Switzerland
Models for Ecological Data
Geography (8 works) · Fire effects on ecosystems (7 works) · Charcoal (6 works) · Environmental Science (6 works) · Biology (5 works) · Geology and Paleoclimatology Research (5 works) · Sediment (5 works) · Archaeology (4 works) · Geology (4 works) · Geomorphology (4 works)