Results 11 to 20 of about 1,368,146 (280)

Tree-Rings and Radiocarbon

open access: yes, 1986
Tree-Rings and Radiocarbon, St. Gregory High School, 8 January 1986This item is part of the Natural History Reports collection. It was digitized from a physical copy provided by the Laboratory of Tree-Ring Research at The University of Arizona.
Ferguson, C. W.
core   +5 more sources

Tree-Rings and Sunspot Numbers

open access: yes, 1972
Tree-ring series that record climatic variation have long been of interest for study of possible effects of solar variability on terrestrial phenomena.
LaMarche, Valmore C., Jr.   +1 more
core   +5 more sources

Monthly river flow modeling using earlywood vessel feature changes, and tree-rings

open access: yesEcological Indicators, 2021
Temporal records of river flow as essential data for water resource management plans are not available in many rivers around the world. In this study, monthly discharges of the Taskoh river in the north of Iran were simulated using dendrohydrology (the ...
Vahid Gholami   +2 more
doaj   +1 more source

Volcanic cooling signal in tree ring temperature records for the past millennium [PDF]

open access: yes, 2013
The authors acknowledge the National Science Foundation for funding much of the research presented herein. RW's Scottish work is currently funded through the UK Leverhulme Trust and Natural Environment Research Council (NERC) projects, “RELiC ...
Anchukaitis, Kevin   +8 more
core   +1 more source

Annual tree rings in Piptadenia gonoacantha (Mart.) J.F.Macbr. in a restoration experiment in the Atlantic Forest: potential for dendroecological research

open access: yesActa Botânica Brasílica, 2016
The tree Piptadenia gonoachantha is widely used in forestry and in forest restoration projects, which require methods for evaluating tree growth. Long-term studies are necessary to determine patterns and detect changes in species growth rhythms.
Arno Fritz das Neves Brandes   +3 more
doaj   +1 more source

Capturing spiral radial growth of conifers using the superellipse to model tree-ring geometric shape

open access: yesFrontiers in Plant Science, 2015
Tree-rings are often assumed to approximate a circular shape when estimating forest productivity and carbon dynamics. However, tree rings are rarely, if ever, circular, thereby possibly resulting in under- or over-estimation in forest productivity and ...
Pei-Jian eShi   +9 more
doaj   +1 more source

Impact of forest fire on radial growth of tree rings and their element concentrations of Pinus sylvestris and Larix gmelinii in northern China

open access: yesFrontiers in Forests and Global Change, 2023
AimsThrough analyzing the responses of the radial growth and element concentrations (B, Mg, Al, K, Ca, Mn, Fe, Zn, Na, P, Ni, and Cu) of tree rings of two dominant tree species to forest fires, we aimed to investigate the relationship between tree rings ...
Mao Wei   +7 more
doaj   +1 more source

Climatic Variations for North America and the North Pacific Since A.D. 1500 as Identified by Well-Dated Tree Rings, and Applied Research Reconstructing Past Climate of the Northern Hemisphere by Use of Tree Rings (Progress Reports)

open access: yes, 1977
Progress Reports Submitted to the National Science Foundation Climate Dynamics Program on Climatic Variations for North America and the North Pacific Since A.D. 1500 as Identified by Well-Dated Tree Rings, Grant No.
Stevens, D. W.   +11 more
core   +5 more sources

Short communication: Many missing rings in old Canary pines can be related with age, fires and traditional uses

open access: yesForest Systems, 2017
Aim and area of study: In the present paper we estimated the age of four monumental Pinus canariensis of Gran Canaria (Canary Islands, Spain) by means of tree-ring analysis.
Mar Génova   +2 more
doaj   +1 more source

A 241-Year Cryptomeria fortune Tree-Ring Chronology in Humid Subtropical China and Its Linkages with the Pacific Decadal Oscillation

open access: yesAtmosphere, 2020
Humid subtropical China is an “oasis” relative to other dry subtropics of the world due to the prevailing of the East Asian summer monsoon (EASM).
Zhipeng Dong   +8 more
doaj   +1 more source

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