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History of Tree-Ring Research

History of Tree-Ring Research. February 7. Scientists That Have Explored Tree Rings. Theophrastus of Erusus Leonardo da Vinci Henri-Louis Duhamel du Monceau Charles Babbage. Twining, A.C. 1833. On the growth of timber. American Journal of Science and Arts 24: 391-393.

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History of Tree-Ring Research

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  1. History of Tree-Ring Research February 7

  2. Scientists That Have Explored Tree Rings • Theophrastus of Erusus • Leonardo da Vinci • Henri-Louis Duhamel du Monceau • Charles Babbage

  3. Twining, A.C. 1833. On the growth of timber. American Journal of Science and Arts 24: 391-393. “Every tree had preserved a record of the seasons, for the whole period of its growth…might not this natural, unerring, graphical record of seasons past, deserve as careful preservation as a curious mineral or a new form of crystals?” “Such a comparison… might prove the means of carrying back our knowledge of the seasons, through a period coeval with the age of te oldest forest trees.”

  4. Robert Hartig 1839-1901 Professor at Forest Academy, Eberswalde Germany Theodor Hartig “On the Development of Annual Rings in Woody Plants.” -- 1853, in Uber die Entwicklung des Jahresringes der Holzpflanzen Botanist interested in forest growth = silviculture 1805-1880 Professor of Forestry Sciences at the University of Berlin

  5. Enos Mills (1838–1922) John Muir (1838–1914)

  6. Andrew E. Douglass (1867-1962)

  7. Douglass, A.E. 1929. The secret of the southwest solved by talkative tree rings. National Geographic Magazine 56(6):736-770.

  8. Douglass in Storeroom Laboratory of Tree-Ring Research Tucson, Arizona 1940

  9. Florence Hawley

  10. Bruno Huber (1899 – 1969)

  11. Edmund Schulman (1908 – 1958)

  12. Edmund Schulman (1908 – 1958)

  13. Harold C. Fritts (1928 – )

  14. Subfields of Dendrochronology • Dendroarchaeology: Dating of Archaeological dwellings. • Dendroclimatology: Developing a record of past climate. • Dendrogeomorphology: Dating land movements such as landslides in the past. • Dendrohydrology: Creating a record of past water availability and flooding. • Dendroglaciology: Dating past movements of glaciers. • Dendrovolcanology: Dating the past eruptions of volcanoes. • Dendrochemistry: Using tree rings as a monitor of the chemical makeup of the soil. • Dendroecology: Recording ecological processes such as tree-line movement, insect outbreaks, or movement of invasive tree species. • Dendropyrochronology: Dating the past occurrence of forest fires. • Dendroentomology: The use of tree rings to reconstruct past population levels of insects. • Dendromastecology: The use of tree rings to reconstruct fruiting events in trees.

  15. Individual tree species that can live to more than 1,000 years,that we know of? • Intermountain bristlecone pine (Pinus longaeva D.K. Bailey), 4,844 years old • Alerce (Fitzroya cuppressoides (Molina) Johnston), 3,620 years old • Giant sequoia (Sequoiadendron giganteum (Lindl.) Buchholz), 3,300 years old • Rocky Mountain bristlecone pine (Pinus aristata Engelm.), 2,425 years old • Coast redwood (Sequoia sempervirens (D.Don) Endl.), 2,200 years old • Foxtail pine (Pinus balfouriana Grev. & Balf.), 2,110 years old • Rocky Mountain juniper (Juniperus scopulorum Sarg.), 1,889 years old • Limber pine (Pinus flexilis James), 1,670 years old • Alaska yellow-cedar (Chamaecyparis nootkatensis (D.Don) Spach), 1,636 • Baldcypress (Taxodium distichum (L.) Rich.), 1,622 years old • Western juniper (Juniperus occidentalis Hook.), 1,288 years old • Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), 1,275 years old • Huon pine (Lagarostrobus franklinii C.J. Quinn), 1,089 years old • Northern white-cedar (Thuja occidentalis L.), 1,032 years old • Himalayan Hemlock (Tsuga dumosa) 1,011 years old

  16. International Tree Ring Data Bank (ITRDB) http://www.ngdc.noaa.gov/paleo/treering.html

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