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Dry season limnological conditions and basin geology exhibit complex relationships with δ¹³C and δ¹⁵N of carbon sources in four Neotropical floodplains

Description: This article assesses the potential for basin geology and local limnological conditions to predict stable carbon and nitrogen isotope values of six carbon sources at multiple locations in four Neotropical floodplain ecosystems (Paranaá , Pantanal, Araguaia, and Amazon).
Date: March 30, 2017
Creator: Alves, Gustavo H. Zaia; Hoeinghaus, David; Manetta, Gislaine I. & Benedito, Evanilde
Partner: UNT College of Arts and Sciences

Quiet planting in the locked constraints satisfaction problems

Description: We study the planted ensemble of locked constraint satisfaction problems. We describe the connection between the random and planted ensembles. The use of the cavity method is combined with arguments from reconstruction on trees and first and second moment considerations; in particular the connection with the reconstruction on trees appears to be crucial. Our main result is the location of the hard region in the planted ensemble, thus providing hard satisfiable benchmarks. In a part of that hard region instances have with high probability a single satisfying assignment.
Date: January 1, 2009
Creator: Zdeborova, Lenka & Krzakala, Florent
Partner: UNT Libraries Government Documents Department

[Beach Scene]

Description: Photograph of a beach scene in Mexico. Two palm trees are visible on the beach in the foreground. In the background, mountains are visible on the other shore across the water.
Date: unknown
Creator: Gough, Ray
Partner: UNT College of Visual Arts + Design

[Branch in the sky]

Description: Photograph of a large tree branch. In the image, the sky is visible through the branches and a small house can be seen below. Full trees sit on a small hill mimicking the shape of the large branch above.
Date: unknown
Creator: Clark, Joe
Partner: UNT Libraries Special Collections

[Woman standing by a tree]

Description: Narrative by Junebug Clark: This photo was taken during the late 1930s in St. Claire, Michigan. It is an image of an unknown woman standing by a tree. Photo by: Bernice Clark
Date: 193u
Creator: Clark, Bernice
Partner: UNT Libraries Special Collections

Planting and care of street trees.

Description: Describes the importance of shade trees within city limits, including: how to plan the layout of street trees; the various types of trees best suited for city growth; and how to properly maintain city-grown trees.
Date: August 1921
Creator: Mulford, Furman Lloyd, b. 1869.
Partner: UNT Libraries Government Documents Department

The Effects of Organic Surface Amendments on Soil Nutrients and Initial Tree Establishment

Description: This study examined the effects of replicating woodland soil surface horizonation on the nutrient status of underlying soils and the initial establishment and growth of trees. A total of 283 container grown trees were planted in a bufferzone around a future landfill site. Control amendments consisted of an 8 cm layer (0.5 m3) of wood chips applied in a circular area of 4.6 m2 around the trees' planting pit. For the treatment, a 2.5 cm layer of composted biosolids (0.15 m3 or 80 Mg/ha) was applied in a circular area of 4.6 m2 around the trees' planting pit followed by an 8 cm layer (0.5 m3) of wood chips. The results indicate that the replication of woodland soil surface attributes using composted biosolids can significantly improve the nutrient status of underlying soil. Some significant effects were seen under control conditions, too. However, the effects on tree establishment and growth parameters were, for the most part, not statistically significant.
Date: May 1999
Creator: Thuesen, Kevin (Kevin Andrew)
Partner: UNT Libraries

Transplanting trees and shrubs.

Description: Describes the most effective ways of transplanting trees and shrubs from one environment to another, including information regarding: root protection; correct planting methods; suitable soil; and how to properly prepare plants for transplanting.
Date: 1932
Creator: Mulford, Furman Lloyd, b. 1869
Partner: UNT Libraries Government Documents Department

A Technique for Quantifying Forest Stands for Management Evaluations

Description: "In this study, a system for describing the three-dimensional geometry of trees and stands is presented. The system consists of two survey instruments, a theodolite and transit, and basic triangulation principles. A spotting laser has recently been added to the system to facilitate the spotting of the tree nodes to be surveyed" (p. ix). Results show significant differences in tree productivity as a result of fertilization and changes in heights, bole diameters, etc.
Date: December 1971
Creator: West, Henry W. & Allen, H. H.
Partner: UNT Libraries Government Documents Department

[Trees in the Snow]

Description: Photograph of a group of trees in the snow. The dark trunks stand in sharp contrast to the white snow and gray sky, and more trees can be seen in the distant background.
Date: 19uu
Creator: Clark, Joe
Partner: UNT Libraries Special Collections

[Trees on a hill]

Description: Joe's photograph of trees on a hill in Cumberland Gap, Tennessee shows the beauty, peace, sky and clouds. A great place to day dream. This is part of what Joe remembers as a child and returned to capture the spirit of his home through photography.
Date: 194u
Creator: Clark, Joe
Partner: UNT Libraries Special Collections

A Primer of Forestry

Description: This report discusses forests and treats the topic in four parts. The first part describes the life of an individual tree, and the second describes individual trees as parts of a forest. The third and fourth parts discuss forests as communities of trees and methods for preventing destruction of forests.
Date: 1903
Creator: Pinchot, Gifford, 1865-1946
Partner: UNT Libraries Government Documents Department