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Pine Gene Discovery Project - Final Report - 08/31/1997 - 02/28/2001

Description: Integration of pines into the large scope of plant biology research depends on study of pines in parallel with study of annual plants, and on availability of research materials from pine to plant biologists interested in comparing pine with annual plant systems. The objectives of the Pine Gene Discovery Project were to obtain 10,000 partial DNA sequences of genes expressed in loblolly pine, to determine which of those pine genes were similar to known genes from other organisms, and to make the DNA sequences and isolated pine genes available to plant researchers to stimulate integration of pines into the wider scope of plant biology research. Those objectives have been completed, and the results are available to the public. Requests for pine genes have been received from a number of laboratories that would otherwise not have included pine in their research, indicating that progress is being made toward the goal of integrating pine research into the larger molecular biology research community.
Date: April 30, 2001
Creator: Whetten, R. W.; Sederoff, R. R.; Kinlaw, C. & Retzel, E.
Partner: UNT Libraries Government Documents Department

Extension of the Southern Hemisphere Atmospheric Radiocarbon Curve, 2120-850 years BP: Results from Tasmanian Huon Pine

Description: Decadal samples of dendrochronologically-dated pine (Lagorostrobos franklinii) from the Stanley River basin, Tasmania have been radiocarbon dated between 2120-850 yr BP. This data set overlaps and extends the current Southern Hemisphere record, which currently covers the period 110-995 yr BP. There is good agreement between the two records between 995-850 yr BP, between sample replicates and with consensus values for standards. As in the younger dataset, we find evidence for a distinct but variable offset between the southern hemisphere data and IntCal04; although this is likely due to real temporal variability in the interhemispheric offset, further work is planned to rule out possible laboratory or sample preparation differences.
Date: February 12, 2010
Creator: Zimmerman, S R; P.Guilderson, T; Buckley, B M & Cook, E
Partner: UNT Libraries Government Documents Department

Tritium Deposition in Pine Trees and Soil from Atmospheric Releases of Molecular Tritium

Description: Much of the tritium found in soil and leaf litter near a chemical separations facility is incorporated into soil organic matter in a stable non-exchangeable form. Formation of this ''bound'' tritium seems to result from the uptake of molecular tritium (HT) by living pine needles. Soil and litter microbes convert HT to HTO more rapidly, but no measurable organic tritium is formed. This report discusses this study.
Date: February 16, 1982
Creator: Murphy, C.E. Jr.
Partner: UNT Libraries Government Documents Department

Environmental Influences on Wood Chemistry and Density of Populus and Loblolly Pine

Description: The objectives of the study are to: (1) determine the degree to which physical and chemical wood properties vary in association with environmental and silvicultural practices in Populus and loblolly pine and (2) develop and verify species-specific empirical models in an effort to create a framework for understanding environmental influences on wood quality.
Date: August 11, 2006
Creator: Tuskan, G.A.
Partner: UNT Libraries Government Documents Department

Glacial Refugium of Pinus pumila (Pall.) Regel in Northeastern Siberia

Description: One of the most glowing representatives of the Kolyma flora [1], ''Pinus pumila'' (Pall.) Regel (Japanese stone pine), is a typical shrub in larch forests of the northern Okhotsk region, basins of the Kolyma and Indigirka rivers, and high-shrub tundra of the Chukchi Peninsula. It also forms a pine belt in mountains above the forest boundary, which gives way to the grass-underbrush mountain tundra and bald mountains. In the southern Chukchi Peninsula, ''Pinus pumila'' along with ''Duschekia fruticosa'' (Rupr.) Pouzar and ''Betula middendorffii'' Trautv. et C. A. Mey form trailing forests transitional between tundra and taiga [2]. Pinus pumila pollen, usually predominating in subfossil spore-and-pollen spectra of northeastern Siberia, is found as single grains or a subordinate component (up 2-3%, rarely 10%) in spectra of lacustrine deposits formed during the last glacial stage (isotope stage 2) in the Preboreal and Boreal times of the Holocene. Sometimes, its content increases to 15-22% in spectra of lacustrine deposits synchronous to the last glacial stage near the northern coast of the Sea of Okhotsk [3], evidently indicating the proximity of Japanese stone pine thickets.
Date: February 10, 2007
Creator: Shilo, N A; Lozhkin, A V; Anderson, P M; Brown, T A; Pakhomov, A Y & Solomatkina, T B
Partner: UNT Libraries Government Documents Department

Model-Based Estimation of Forest Canopy Height in Red and Austrian Pine Stands Using Shuttle Radar Topography Mission and Ancillary Data: a Proof-of-Concept Study

Description: In this paper, accurate tree stand height retrieval is demonstrated using C-band Shuttle Radar Topography Mission (SRTM) height and ancillary data. The tree height retrieval algorithm is based on modeling uniform tree stands with a single layer of randomly oriented vegetation particles. For such scattering media, the scattering phase center height, as measured by SRTM, is a function of tree height, incidence angle, and the extinction coefficient of the medium. The extinction coefficient for uniform tree stands is calculated as a function of tree height and density using allometric equations and a fractal tree model. The accuracy of the proposed algorithm is demonstrated using SRTM and TOPSAR data for 15 red pine and Austrian pine stands (TOPSAR is an airborne interferometric synthetic aperture radar). The algorithm yields root-mean-square (rms) errors of 2.5-3.6 m, which is a substantial improvement over the 6.8-8.3-m rms errors from the raw SRTM minus National Elevation Dataset Heights.
Date: April 6, 2007
Creator: Brown Jr., C G; Sarabandi, K & Pierce, L E
Partner: UNT Libraries Government Documents Department

Ligumia subrostrata, Specimen #538

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; moderately thick shell; bluish-white internal coloring; brown external coloring; no external sculpturing. Collected in the Cypress basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected.
Date: October 17, 1974
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Ligumia subrostrata, Specimen #539

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; moderately thick shell; bluish-white internal coloring; brown external coloring; no external sculpturing. Collected in the Cypress basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected.
Date: October 17, 1974
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Toxolasma texasense, Specimen #1130

Description: One preserved mussel specimen including the right valve only. The specimen exhibits an elliptical shape; moderately thick shell; single looped beak sculpturing; bluish-white internal coloring; brown external coloring; no external sculpturing. Collected in the Cypress basin. The specimen measures between 0 - 60 mm in length and was assessed to be relatively-recently dead when collected.
Date: October 17, 1974
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Utterbackia imbecillis, Specimen #1298

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; green external coloring; no external sculpturing. Collected in the Cypress basin. The specimen measures between 0 - 60 mm in length and was assessed to be relatively-recently dead when collected.
Date: October 17, 1974
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Utterbackia imbecillis, Specimen #1299

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; green external coloring; no external sculpturing. Collected in the Cypress basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected.
Date: October 17, 1974
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Toxolasma texasense, Specimen #1140

Description: One preserved mussel specimen including the right valve only. The specimen exhibits an elliptical shape; moderately thick shell; single looped beak sculpturing; white internal coloring; brown external coloring; no external sculpturing. Collected in the Cypress basin. The specimen measures between 0 - 60 mm in length and was assessed to be long dead when collected.
Date: October 17, 1974
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Toxolasma texasense, Specimen #1141

Description: One preserved mussel specimen including the left valve only. The specimen exhibits an elliptical shape; moderately thick shell; single looped beak sculpturing; white internal coloring; brown external coloring; no external sculpturing. Collected in the Cypress basin. The specimen measures between 0 - 60 mm in length and was assessed to be long dead when collected.
Date: October 17, 1974
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Toxolasma texasense, Specimen #1142

Description: One preserved mussel specimen including the left valve only. The specimen exhibits an elliptical shape; moderately thick shell; single looped beak sculpturing; white internal coloring; brown external coloring; no external sculpturing. Collected in the Cypress basin. The specimen measures between 0 - 60 mm in length and was assessed to be long dead when collected.
Date: October 17, 1974
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Toxolasma texasense, Specimen #1143

Description: One preserved mussel specimen including the right valve only. The specimen exhibits an elliptical shape; moderately thick shell; single looped beak sculpturing; bluish-white internal coloring; brown external coloring; no external sculpturing. Collected in the Cypress basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected.
Date: October 17, 1974
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Toxolasma texasense, Specimen #1144

Description: One preserved mussel specimen including the left valve only. The specimen exhibits an elliptical shape; moderately thick shell; single looped beak sculpturing; bluish-white internal coloring; brown external coloring; no external sculpturing. Collected in the Cypress basin. The specimen measures between 0 - 60 mm in length and was assessed to be relatively-recently dead when collected.
Date: October 17, 1974
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Toxolasma texasense, Specimen #1145

Description: One preserved mussel specimen including the left valve only. The specimen exhibits an elliptical shape; moderately thick shell; single looped beak sculpturing; bluish-white internal coloring; brown external coloring; no external sculpturing. Collected in the Cypress basin. The specimen measures between 0 - 60 mm in length and was assessed to be relatively-recently dead when collected.
Date: October 17, 1974
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Utterbackia imbecillis, Specimen #1300

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; reddish-brown external coloring; no external sculpturing. Collected in the Cypress basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected.
Date: October 17, 1974
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum