Summary of Valerie Trouet's Tree Story , livre ebook

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38 pages

English

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Please note: This is a companion version & not the original book.
Sample Book Insights:
#1 Dendrochronology is the study of tree rings, and it originated in the American West. It was not until I taught an Introduction to Dendrochronology class that I learned the history of the laboratory and its connection to the desert and astronomy.
#2 The planet Mars attracted many scientists and amateurs alike in the late nineteenth century. The theories of Martian intelligent life were wildly popular with the public, but the scientific community was skeptical of them.
#3 Douglass’s relationship with his supervisor, Lowell, was strained after the Message from Mars debacle. He grew even more disenchanted with Lowell’s aspirations after the fiasco, and he was eventually dismissed from the observatory.
#4 Douglass began the work of dendrochronology in Arizona, where his ambitions in astronomy had taken him. He collected his first 25 tree-ring samples from a log yard in Flagstaff by cutting stem discs from the ends of logs and the tops of stumps.

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Life Sciences

Sciences et techniques

Biology

Science

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Publié par	Everest Media LLC
Date de parution	20 août 2022
Nombre de lectures	0
EAN13	9798350015881
Langue	English
Poids de l'ouvrage	1 Mo

Informations légales : prix de location à la page 0,0200€. Cette information est donnée uniquement à titre indicatif conformément à la législation en vigueur.

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Insights on Valerie Trouet's Tree Story
Contents Insights from Chapter 1 Insights from Chapter 2 Insights from Chapter 3 Insights from Chapter 4 Insights from Chapter 5 Insights from Chapter 6 Insights from Chapter 7 Insights from Chapter 8 Insights from Chapter 9 Insights from Chapter 10 Insights from Chapter 11 Insights from Chapter 12 Insights from Chapter 13 Insights from Chapter 14 Insights from Chapter 15 Insights from Chapter 16 Insights from Chapter 17
Insights from Chapter 1

#1

Dendrochronology is the study of tree rings, and it originated in the American West. It was not until I taught an Introduction to Dendrochronology class that I learned the history of the laboratory and its connection to the desert and astronomy.

#2

The planet Mars attracted many scientists and amateurs alike in the late nineteenth century. The theories of Martian intelligent life were wildly popular with the public, but the scientific community was skeptical of them.

#3

Douglass’s relationship with his supervisor, Lowell, was strained after the Message from Mars debacle. He grew even more disenchanted with Lowell’s aspirations after the fiasco, and he was eventually dismissed from the observatory.

#4

Douglass began the work of dendrochronology in Arizona, where his ambitions in astronomy had taken him. He collected his first 25 tree-ring samples from a log yard in Flagstaff by cutting stem discs from the ends of logs and the tops of stumps.

#5

Douglass’s work with dendrochronology helped him find the oldest tree ring in the oldest giant sequoia in California, which was formed in 1305 BCE. He then used this information to extend the Arizona record further back in time.

#6

Douglass’s tree-ring work with archeological wooden beams helped anchor the floating chronology in time, but it took him 14 more years to find the missing link between the two chronologies and bridge the gap between them.

#7

Douglass’s work helped extend the tree-ring record back in time by more than 500 years, to 700 CE. He then focused his efforts on extending this record even further back in time, and by 1934 he had covered almost the entire Christian calendar.

#8

Dendrochronology is a field of scientific expertise that has grown since its humble origins in southern Arizona in the 1930s. It has been used to study the climate over the past 2,000 years, put twentieth- and twenty-first-century droughts and pluvials in a historical context, and study past earthquakes, volcanoes, wildfires, and other natural hazards.

#9

The field of dendrochronology has shown us many of the challenges and limitations of it. As we have learned what works and what does not work in dendrochronology, it has become clear that the conditions in the American Southwest were just right for the establishment of tree-ring research.

#10

The American Southwest has the advantage of having old, drought-sensitive trees and well-preserved archeological wood, which explains why dendrochronology was founded in the region.

#11

Working in the late 1930s and early 1940s, Hawley and her team ran into challenges that were related to the culture of the era. One of their team members was accused of being a German spy by landowners in western Kentucky, and another tried to take over the research position by leveraging the precarious stature of women in science.
Insights from Chapter 2

#1

I was once driving from Tucson to Santa Fe, New Mexico, with two friends, to take a break from midsemester madness. We played a game inspired by the twitter trend of the moment, #sciencesongs, in which you replace real song lyrics with references to your research.

#2

Kigoma is a small city on the northeastern banks of Lake Tanganyika, about 40 miles south of the border with Burundi. It is home to many foreigners, who are called mzungu by the locals. Kristof and I were there to collect tree-ring samples.

#3

Our Kigoma tree-ring work was pioneering and exploratory. We were the first to collect tree-ring samples in Tanzania and to investigate whether dendrochronology was possible in the Tanzanian woodland. If it was, our work could ultimately lead to climate reconstruction, in which tree-ring data are used to look at the climate of the past.

#4

When we sample old trees, we prefer increment borers over machetes or chain saws because they don’t kill the trees or even harm them. The most recent ring is just inside the bark, and the oldest, first-formed ring is at the center.

#5

Dendrochronologists collect tree cores to reconstruct past climates. They select trees that are limited by year-to-year variations in the climate and little else, and they prefer remote trees and forests that have been left alone by humans.

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