Dissertations / Theses: 'Dendrochronology'

1

Ferguson, C. W. "Forensic Dendrochronology." Laboratory of Tree-Ring Research Archives. The University of Arizona, 1985. http://hdl.handle.net/10150/303143.

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Jones, Emma. "Practical Bayesian dendrochronology." Thesis, University of Sheffield, 2013. http://etheses.whiterose.ac.uk/4130/.

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Grow, David Earl. "Effects of substrate on dendrochronologic streamflow reconstruction: Paria River, Utah with fractal application to dendrochronology." Diss., The University of Arizona, 2002. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_e9791_2002_312_sip1_w.pdf&type=application/pdf.

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Okasha, Mahmoud Khaled Mohamed. "Statistical methods in dendrochronology." Thesis, University of Sheffield, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295760.

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Cairns, David Allan. "Detecting ring anomolies in dendrochronology." Thesis, University of Sheffield, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.425624.

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Crone, Bridget Anne. "Dendrochronology and the study of crannogs." Thesis, University of Sheffield, 1988. http://etheses.whiterose.ac.uk/1841/.

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The dendrochronological potential of wood from two crannogs was evaluated. Consisting predominantly of non-oak species with fewer than 50 year-rings, the assemblages required the development of new techniques and approaches. The problem of validating cross-matches between short ring sequences was resolved by a new methodology based on internal consistency. A group of internally consistent sequences contains no conflicting chronological relationships in the full set of its pairwise correlations. The SORT.STRING program, designed to identify sets of internally consistent groups in large data-sets, was tested on two 'known' data-sets. It successfully identified the correct chronological relationships in these data-sets. Applied to the assemblages from the crannogs, it identified small, mutually exclusive groups of sequences which could not be satisfactorily merged to form a site chronology. Reasons for this are explored and indications for future work identified. The dendrochronological potential of alder (Alnus glutinosa)was examined and a suitable methodology developed. Cross-correlation and chronology formation are possible but extreme ring-width values, i.e signature years, and compression of the outermost rings re identified as problematic features. Evidence for woodland management practices in the crannog assemblages was evaluated. A model for woodland management was formulated, on the basis of two samples of modern coppiced material. This distinguishes between adventitious and formal coppice. Application of the model to hurdles found on the Irish crannog indicates that they are the products of adventituous coppice.

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Jubock, Z. H. "Statistical models and techniques for dendrochronology." Thesis, University of Nottingham, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381088.

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Mills, Coralie Mary. "Dendrochronology in Exeter and its application." Thesis, University of Sheffield, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295807.

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Sparks, Jodi K. Farrell, and Graham I. Bishop. "Evaluation Of Sassafras Albidum For Dendrochronology." Tree-Ring Society, 2009. http://hdl.handle.net/10150/622609.

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Sassafras is a deciduous, hardwood, ring-porous species occurring throughout the eastern United States as far west as the Great Plains, but sassafras is used rarely in dendrochronological studies. Samples from 44 sassafras (Sassafras albidum) trees were crossdated (Crossdating Index 2) within and between two sites in Indiana. Ring-width indices were significantly correlated with a variety of climatic indicators. These results suggest that sassafras can be used for a variety of dendrochronological studies.

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Dobbertin, Michèle Kaennel, and Henri D. Grissino-Mayer. "The Bibliography of Dendrochronology and the Glossary of Dendrochronology: Two New Online Tools for Tree-Ring Research." Tree-Ring Society, 2004. http://hdl.handle.net/10150/262636.

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Two new online products are available to the international tree-ring community. The Bibliography of Dendrochronology (published online in February 2003) currently has 10,000 references and is the world’s largest online bibliography specializing in tree-ring research. In March 2004, the Glossary of Dendrochronology was made available and is a searchable database of 351 terms and definitions in English, German, French, Spanish, Italian and Portuguese. Both databases result from the collaboration of numerous tree-ring scientists worldwide.

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Huante, Pilar, Emmanuel Rincón, and Thomas W. Swetnam. "Dendrochronology of Abies Religiosa in Michoacan, Mexico." Tree-Ring Society, 1991. http://hdl.handle.net/10150/262286.

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An exploratory investigation of tree growth and climate relationships in Abies religiosa from Michoacan, Mexico, produced the first crossdated and standardized tree-ring chronology from the North American tropics. Pearson correlation coefficients and principal components response function analysis were employed. Results indicate that ring-width series from this species have moderately high signal-to-noise ratio (S/N = 13.42). A substantial percentage of the ring-width signal can be explained by instrumented monthly climate data, particularly spring precipitation and winter temperature. Although correlation between climate data and the tree-ring measurements indicate that growth of Abies religiosa is highly influenced by year-to-year climate variation, longer climate records and tree-ring chronologies are needed from this tropical region to improve understanding of climate -tree growth relationships, and for dendroclimatic reconstruction.

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Baxter, Laura, Kate J. Baird, Lisa C. Pedicino, and Karriaunna Scotti. "The Dendrochronology of the Reconstruction of Kinishba." Tree-Ring Society, 1997. http://hdl.handle.net/10150/262371.

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Dendroarchaeology is often discussed with reference to prehistoric contexts; however, it is equally relevant in historical contexts. Dendroarchaeological analysis independently dates the modem reconstruction of prehistoric Kinishba Pueblo with higher resolution than known documentary sources provide and illuminates reroofing practices. Kinishba is a large Mountain Mogollon pueblo on the Fort Apache Indian Reservation in east-central Arizona. Historically, the reconstructed Kinishba is attributed to the 1930s work of Byron Cummings. Nineteen dates from structural beams in nine rooms of the pueblo form a tight cluster with a strong terminal peak at 1950. This peak combined with beam and architectural attributes provides evidence for an undocumented, extensive reroofing episode. Thus, the target event was not the building of reconstructed rooms as originally expected, but replacement of the original reconstructed roofs. This study illustrates two important dendroarchaeological points. First, preconceived ideas, even if based on sound research, should not influence sample dating, which should be free of bias. Second, this study illustrates the importance of tree-ring dates in archaeology and the potential conflict between other types of data and tree-ring dates.

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Haasan, Masoud. "Tree-ring growth modelling applied to Bayesian dendrochronology." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/15746/.

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Classical dendrochronology involves using standard statistical methods, such as correlation coefficients and t-values to crossmatch undated tree-ring width sequences to dated 'master' chronologies. This crossmatching process aims to identify the 'best' offset between the dated and undated sequences with a view to providing a calendar date estimate for the undated trees. Motivated by the successful and routine use of Bayesian statistical methods to provide a fully probabilistic approach to radiocarbon dating, this thesis investigates the practicality of using a process-based forward model known as 'VSLite' at the core of Bayesian dendrochronology. The mechanistic VSLite model has the potential to capture key characteristics of the complex system that links climate to tree-ring formation. It allows simulated, dated tree-ring chronologies to be generated at any geographical location where historical climate records exist. Embedding VSLite within a Bayesian approach to tree-ring dating allows combination of both ring-width data and any available prior information. Additionally, instead of identifying the `best' calendar date estimate, the Bayesian approach allows provision of probabilistic statements about a collection of possible dates, each with a specific (posterior) probability. The impact of uncertainty in the VSLite input parameters on the model output has been systematically investigated in this thesis, and the VSLite-based approach to Bayesian tree-ring dating has been explored using both simulated and real data. Results of implementing the new VSLite-based approach are compared with those using current classical and Bayesian approaches. An option for reducing the need for preprocessing data is also investigated via a data-adaptive rescaling approach. Having established the effectiveness of using the mechanistic forward model as the core for Bayesian dendrochronology, the practicality of adopting it to aid in dating in the absence of suitable local master chronologies is also explored.

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Leavitt, Steven W. "An Issue Devoted To Southeastern Dendrochronology Editor's Note." Tree-Ring Society, 2009. http://hdl.handle.net/10150/623359.

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Towner, Ronald Hugh 1957. "The dendrochronology of the Navajo pueblitos of Dinetah." Diss., The University of Arizona, 1997. http://hdl.handle.net/10150/288823.

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Pueblito sites include masonry structures and forked-stick hogans in defensible positions in the traditional Navajo homeland of Dinetah. Pueblitos have been a key piece of evidence used to infer a massive immigration of Puebloans into the Navajo country following the Spanish Reconquest of New Mexico. Archaeological and tree-ring evidence places the sites in their proper temporal and geographic perspectives and suggests that immigration has been overstated as a factor in models of Navajo cultural development. An expanded pueblito site tree-ring database illuminates early Navajo wood use behavior, the temporal and spatial patterning of pueblito site occupations, and relationships between climate and the Navajo occupation and abandonment of Dinetah. Wood use behaviors identified at the pueblito sites include construction with freshly cut and stockpiled timbers, beam reuse, repair and remodeling of structures, and dead wood use. Different selection criteria by the builders, combined with differential preservation, have resulted in different qualitative and quantitative data for pueblitos and forked-stick hogans. The wood use model developed has serious implications for dating early Navajo structures. The tree-ring and archaeological data indicate that most pueblitos are neither temporally nor spatially related to Puebloan immigration or the Spanish Reconquest. Masonry structures and hogans at the sites are contemporaneous and were constructed by Navajos for protection against Ute raiders. Furthermore, most pueblitos were occupied for relatively short periods of time and the regional population density was much lower than has been previously assumed. A dendroclimatic reconstruction indicates that the 1300s and late 1400s were both periods of relatively stable and favorable conditions that may have facilitated Navajo entry into the Dinetah. The drought of 1748, often cited as a cause of the abandonment of the Dinetah, was a single-year event and probably not a "push" in the abandonment. The wide geographic distribution of early Navajo settlement has been ignored because of the spectacular nature of and good preservation in pueblitos. A new model of Navajo ethnogenesis is based on a different early Navajo population distribution and a variety of other means of incorporating non-Athapaskan elements into Navajo culture.

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Graybill, Donald A. "Western U.S. Tree-Ring Index Chronology Data for Detection of Arboreal Response to Increasing Carbon Dioxide." Laboratory of Tree-Ring Research, University of Arizona (Tucson, AZ), 1985. http://hdl.handle.net/10150/302514.

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Ongoing research designed to expand a grid of tree-ring chronologies in the western U.S. that can be used to examine tree growth response to increasing atmospheric CO2 is summarized in this interim report. Current and projected sampling is designed to cover most of the Great Basin and the Southwestern U.S., focusing on long -lived species growing under stressful climatic conditions. Older trees growing in these circumstances provide the best potential for analytical discrimination of climatic and CO2 signals. A descriptive statistical summary of all current data sets is provided and potential directions of the project are discussed.

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Bilodeau, Janie. "Écologie des érablières à sucre (Acer saccharum Marsh.) à leur limite nord de distribution au Saguenay-Lac-Saint-Jean /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 1992. http://theses.uqac.ca.

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Mémoire (M.Ress.Renouv.)-- Université du Québec à Chicoutimi, 1992.
Résumé disponible sur Internet. CaQCU Bibliogr.: f. 73-76. Document électronique également accessible en format PDF. CaQCU

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Brewer, Peter W., and Christopher H. Guiterman. "A new digital field data collection system for dendrochronology." Laboratory of Tree-Ring Research, University of Arizona, 2016. http://hdl.handle.net/10150/622364.

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A wide variety of information or 'metadata' is required when undertaking dendrochronological sampling. Traditionally, researchers record observations and measurements on field notebooks and/or paper recording forms, and use digital cameras and hand-held GPS devices to capture images and record locations. In the lab, field notes are often manually entered into spreadsheets or personal databases, which are then sometimes linked to images and GPS waypoints. This process is both time consuming and prone to human and instrument error. Specialised hardware technology exists to marry these data sources, but costs can be prohibitive for small scale operations (>$2000 USD). Such systems often include proprietary software that is tailored to very specific needs and might require a high level of expertise to use. We report on the successful testing and deployment of a dendrochronological field data collection system utilising affordable off-the-shelf devices ($100-300 USD). The method builds upon established open source software that has been widely used in developing countries for public health projects as well as to assist in disaster recovery operations. It includes customisable forms for digital data entry in the field, and a marrying of accurate GPS location with geotagged photographs (with possible extensions to other measuring devices via Bluetooth) into structured data fields that are easy to learn and operate. Digital data collection is less prone to human error and efficiently captures a range of important metadata. In our experience, the hardware proved field worthy in terms of size, ruggedness, and dependability (e.g., battery life). The system integrates directly with the Tellervo software to both create forms and populate the database, providing end users with the ability to tailor the solution to their particular field data collection needs.

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Levanič, Tom. "Atrics- A New System For Image Acquisition In Dendrochronology." Tree-Ring Society, 2007. http://hdl.handle.net/10150/622554.

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We developed a new system for image acquisition in dendrochronology called ATRICS. The new system was compared with existing measurement methods. Images derived from the ATRICS program and processed in any of the available programs for automatic tree-ring recognition are of much higher detail than those from flatbed scanners, as optical magnification has many advantages over digital magnification (especially in areas with extremely narrow tree rings). The quality of stitching was tested using visual assessment - no blurred areas were detected between adjacent images and no tree rings were missing because of the stitching procedure. A test for distortion showed no differences between the original and captured square, indicating that the captured images are distortion free. Differences between manual and automatic measurement are statistically insignificant. The processing of very long cores also poses no problems.

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Swetnam, Thomas W., Marna Ares Thompson, and Elaine Kennedy Sutherland. "Using Dendrochronology To Measure Radial Growth of Defoliated Trees." U.S. Department of Agriculture, Forest Service, Cooperative State Research Service, 1985. http://hdl.handle.net/10150/304642.

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Shiyatov, Stefan G. "The Development and State of Dendrochronology in the USSR." Tree-Ring Society, 1988. http://hdl.handle.net/10150/261850.

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The first dendrochronolcgical investigation in the USSR was carried out at the end of the past century. Systematic study of tree rings for the purpose of dating different events and reconstruction of natural conditions began in 1950-1960's. Tree-ring analysis is most intensively used in the studies of forest ecosystem dynamics, timing and frequency assessment of catastrophic phenomena, reconstruction of radiocarbon content in the Earth atmosphere, and dating of historical wood. Much attention is given to the development of long-term prognoses of tree growth and forest environments.

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Smolnik, Matthew John. "Using dendrochronology to identify species-specific ice storm damage in Delaware." Morgantown, W. Va. : [West Virginia University Libraries], 2004. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3680.

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Thesis (M.A.)--West Virginia University, 2004.
Title from document title page. Document formatted into pages; contains vi, 33 p. : ill. (some col.), col. map. Includes abstract. Includes bibliographical references (p. 29-33).

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AHLSTROM, RICHARD VAN NESS. "THE INTERPRETATION OF ARCHAEOLOGICAL TREE-RING DATES (SOUTHWEST, DENDROCHRONOLOGY, PREHISTORY)." Diss., The University of Arizona, 1985. http://hdl.handle.net/10150/188084.

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A comparative approach to analysis of the body of tree-ring data from prehistoric sites in the American Southwest provides information on patterns of wood use, the effectiveness of interpretive methods, and culture history. Requisite to this approach is an interpretive framework developed since the 1920's by archaeologists versed in tree-ring analysis. Central to this scheme is indirect dating, by means of which dates derived for biological events of tree growth are applied to progressively more remote events in human history. A new contribution to this framework is an interpretive model that focuses on the shape of tree-ring date distributions. The framework guides re-interpretation of tree-ring data from sites categorized as Mogollon 2 through 4, Basketmaker III, Pueblo I, Pueblo II, Chaco, Pueblo III, Western Pueblo, Rio Grande, and Pueblo V, and from late pithouses and miscellaneous kivas. Coverage is relatively comprehensive for pithouse sites, Pueblo I sites, and kivas, but selective for post-Pueblo. Interpretations assign dates to construction and repair events, identify dates from deadwood and from eroded, stockpiled, and reused beams, demonstrate the usefulness of detailed provenience information on individual tree-ring samples, and evaluate tree-ring data for reconstructing structure and site histories. The potential contribution to culture history of the corpus of tree-ring dated events is illustrated through discussion of 213 dated pitstructures. This body of data also contributes to knowledge of past wood use and to understanding of interpretive methods. Thus, dates from firewood samples tend to predate hearth use dates, "v" dates are close or equal to cutting dates, and "++" dates are useful though imperfect indicators of deadwood use. Construction-repair intervals indicate that pithouses typically survived for less than 20 years; no such limitation applies to kivas. A sample of 20 or more dates is usually adequate for dating a pitstructure; as the sample falls below this level, unless patterning is clearcut, dating confidence decreases. Patterning in date distributions suggests that many sites were abandoned within a decade or two after their latest tree-ring date.

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Swetnam, Thomas W. "Editorial." Tree-Ring Society, 2001. http://hdl.handle.net/10150/251618.

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Santiago-Blay, Jorge A., Joseph B. Lambert, and Pearce Paul Creasman. "Scientific Advisory-- Expanded Application Of Dendrochronology Collections: Collect And Save Exudates." Tree-Ring Society, 2011. http://hdl.handle.net/10150/622629.

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26

Lui, Kin-pui. "Potential tree species for Hong Kong dendrochronological study /." View the Table of Contents & Abstract, 2006. http://sunzi.lib.hku.hk/hkuto/record/B37120104.

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27

Ferguson, C. W. "Tree-Rings and Radiocarbon." Laboratory of Tree-Ring Research, University of Arizona (Tucson, AZ), 1986. http://hdl.handle.net/10150/302936.

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Čufar, Katarina. "Dendrochronology And Past Human Activity- A Review Of Advances Since 2000." Tree-Ring Society, 2007. http://hdl.handle.net/10150/622468.

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Since 2000, important advances have been made worldwide in the dendrochronology of wood associated with past human activity and cultural heritage. This review summarizes this recent progress in regions with a longstanding tradition of using tree-ring methods, such as Europe and the USA, as well as others such as Asia where developments have been particularly rapid in recent years. The oldest wood generally originates from archaeological sites and the largest amount of wood for research comes from historical structures such as monumental and vernacular architecture. In addition to construction wood, wooden doors, ceilings, furniture, objects of art (such as panel paintings and sculptures), Medieval books, musical instruments and boats can also be utilized. Dating is the first and crucial step of the research and is often difficult even in regions where dendrochronology has a long history of use. In addition to absolute dates, dendrochronology has provided extra information that has enhanced historical knowledge from other sources. Behavioral and environmental inferencing and dendroprovenancing are becoming major areas of research in regions with well-developed networks of reference chronologies and active cooperation among laboratories. The online Bibliography of Dendrochronology and information from conferences have been indispensable in this compilation, because much work related to dendrochronology in cultural heritage is still published in ‘‘gray’’ literature, making it difficult to access.

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Gualberto, Fernandes Tarcisio Jose. "Water-oriented management in forest plantations: combining hydrology, dendrochronology and ecophysiology." Doctoral thesis, Universitat Politècnica de València, 2015. http://hdl.handle.net/10251/48476.

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Assessment of forest water-use (WU) is undoubtedly important and necessary, especially in water scarcity areas that are already suffering the main negative impacts of climate change. However, instead of just determining how much water is used by a forest, it is also important to evaluate how forest-WU responds to forest management practices such as thinning, a widely recognized alternative to promote improvements in the hydrologic balance while maintaining or improving forest resilience. Thus, this thesis proposes three integrated studies performed in an area of Aleppo pine subject to experimental thinning in Eastern Spain. The first study was modelling an artificial neural network (ANN) to estimate daily WU independently of forest heterogeneity provided by thinning. Stand WU was accurately estimated using climate data, soil water content and forest cover (correlation coefficient, R: 0.95; Nash-Sutcliffe coefficient, E: 0.90 and rootmean-square error, RMSE: 0.078mm/day). Then the ANN modelled was used for gapfilling when needed and those results were used in the following studies. The secondly study addressed the question of how tree-growth, WU and water balance changed as a consequence of thinning. To this end, the influence of thinning intensity and its effect at short-term (thinned in 2008) and at mid-term (thinned in 1998) on the water-balance components and tree-growth were investigated. The high-intensity thinning treatment showed significant increases in mean annual tree-growth from 4.1 to 17.3 cm2 yr -1 , a rate which was maintained in the mid-term. Mean daily WU ranged from 5 (control) to 18 (high intensity thinning) l tree-1 . However, when expressed on stand basis, daily WU ranged from 0.18 (medium intensity thinning) to 0.30 mm (control plot), meaning that in spite of the higher WU rates in the remaining trees, stand WU was reduced with thinning. Large differences were found in the water balance components between thinning plots and control. These differences might have significant implications to maintain forest resilience, and improve forest management practices. The third study, brings forth two interesting points and their responses to thinning, WU and intrinsic water-use efficiency (WUEi). First, the relationships between growth and climate were studied at mid-term in order to identify if thinning can improve forest resilience. Second, the relationships between WU and WUEi was explored to identify how these factors were affected by thinning at short-term. A substantial limitation of tree-growth imposed by climatic conditions was observed, although thinning changed the tree-growth-precipitation relationships. Significant differences in WUEi were found after thinning at mid-term, however no significant difference was observed at short-term. Despite this, in general WUEi decreased when precipitation increased, with different slopes for each thinning intensity. Different patterns of the relationship between WU and WUEi were found, being positive for thinned plots and negative for control plot at short-term. Finally this thesis suggest that thinning in Aleppo pine plantations is effective in changing the relationships between WU and WUEi, furthermore, this thesis introduces a novel contribution by looking at the inter-related effects on growth, WU, WUEi and water balance in Mediterranean forest subject to thinning.
Gualberto Fernandes, TJ. (2014). Water-oriented management in forest plantations: combining hydrology, dendrochronology and ecophysiology [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/48476
TESIS

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Allen, Eric B. "Dendrochronology in Northern Utah: Modeling Sensitivity and Reconstructing Logan River Flows." DigitalCommons@USU, 2013. https://digitalcommons.usu.edu/etd/1716.

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Semi-arid valleys in northern Utah are home to the majority of the state population and are dependent upon winter snowpack in surrounding mountains for water for irrigation, hydropower and municipal use. Water is delivered to the urban areas in the spring as discharge in rivers draining the mountains. Understanding the natural variability and cycles of wet and dry periods enables water managers to make informed water allocations. However, the complex regional climate teleconnections are not well understood and the shortness of the instrumental period does not allow for a full understanding of natural variability. Paleo proxies can be used to extend the instrumental record and better capture natural variability. This study uses dendrochronology to reconstruct streamflows of the Logan River in northern Utah over the last several centuries to provide water managers with a better understanding of natural variability. This reconstruction involved sampling and creating three Douglas-fir, one limber pine and two Rocky Mountain juniper chronologies in northern Utah. Combined with existing chronologies, three flow reconstructions of the Logan River were created: one using only within basin chronologies, one using all considered chronologies and one long chronology. Employing regional chronologies resulted in the most robust models, similar to other findings. Results indicate that the last several centuries exhibited greater variability and slightly higher mean annual flows than in the instrumental record (1922-2011). These reconstructions were created using species well established within the dendroclimatology literature such as of Douglas-fir and limber pine and the lesser used Rocky Mountain juniper. The success of Rocky Mountain juniper suggests that it can be a useful species for dendroclimatology in other areas lacking more widely recognized species in semi-arid climates (e.g., pinyon pine).

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McGraw, Donald J. "Andrew Ellicott Douglass and the Giant Sequoias in the Founding of Dendrochronology." Tree-Ring Society, 2003. http://hdl.handle.net/10150/262548.

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The Giant Sequoia played several crucial roles in the founding of the modern science of tree-ring dating. These included at least two central theoretical constructs and at least two minor ones; however, historical studies of dendrochronology are actively continuing and this list is expected to expand. Second only to the importance of the ponderosa pine (Pinus ponderosa) in the earliest days of the infant science, the Giant Sequoia (Sequoiadendron giganteum) was at the very center of the establishment of the discipline of dendrochronology. How the sequoia came to be used by A.E. Douglass, and what vital information and how it provided such information is the topic here.

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CROPPER, JOHN PHILIP. "TREE-RING RESPONSE FUNCTIONS. AN EVALUATION BY MEANS OF SIMULATIONS (DENDROCHRONOLOGY RIDGE REGRESSION, MULTICOLLINEARITY)." Diss., The University of Arizona, 1985. http://hdl.handle.net/10150/187946.

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The problem of determining the response of tree ring width growth to monthly climate is examined in this study. The objective is to document which of the available regression methods are best suited to deciphering the complex link between tree growth variation and climate. Tree-ring response function analysis is used to determine which instrumental climatic variables are best associated with tree-ring width variability. Ideally such a determination would be accomplished, or verified, through detailed physiological monitoring of trees in their natural environment. A statistical approach is required because such biological studies on mature trees are currently too time consuming to perform. The use of lagged climatic data to duplicate a biological, rather than a calendar, year has resulted in an increase in the degree of intercorrelation (multicollinearity) of the independent climate variables. The presence of multicollinearity can greatly affect the sign and magnitude of estimated regression coefficients. Using series of known response, the effectiveness of five different regression methods were objectively assessed in this study. The results from each of the 2000 regressions were compared to the known regression weights and a measure of relative efficiency computed. The results indicate that ridge regression analysis is, on average, four times more efficient (average relative efficiency of 4.57) than unbiased multiple linear regression at producing good coefficient estimates. The results from principal components regression are slight improvements over those from multiple linear regression with an average relative efficiency of 1.45.

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Miles, D. W. H. "New developments in the interpretation of dendrochronology as applied to oak building timbers." Thesis, University of Oxford, 2006. http://ora.ox.ac.uk/objects/uuid:54a9707e-1b02-4ceb-b7ff-c95db4d68229.

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The combination of the various aspects of this research has resulted in a better understanding of how medieval buildings were constructed, and allows an improved interpretation of tree-ring dates, including both precise and estimated felling date ranges.

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R, Villalba, Jose A. Boninsegna, and Richard L. Holmes. "Cedrela Angustifolia and Juglans Australis: Two New Tropical Species Useful in Dendrochronology." Tree-Ring Society, 1985. http://hdl.handle.net/10150/261332.

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Dendrochronological problems in dating tropical tree species are responsible for a large gap in global dendroclimatic reconstructions. Study of Cedrela and Juglans in the low-latitude forests of northern Argentina and Bolivia has resulted in development of four chronologies. These genera have good tree-ring characteristics, and statistics indicate that they have good potential for dendroclimatology. Longer series should be obtained from older stands.

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Brown, Peter Mark 1956. "Dendrochronology and fire history in a stand of northern California coast redwood." Thesis, The University of Arizona, 1991. http://hdl.handle.net/10150/277864.

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Fire-scarred cross-sections from coast redwood (Sequoia sempervirens) at two sites were dendrochronologically dated and used to develop a fire history. Redwood offers a challenge for dendrochronological study due to ring wedging and complacency. Crossdating was successful in 12 of 24 trees. The fire history was developed by comparison of fire scars and fire-associated ring characteristics (resin ducts, double latewood, growth releases, and ring separations) recorded in ring series. Using only dates of fire scars from the first fire in 1714 to the last in 1962, the mean fire interval (MFI) was 9.9 years. MFI for the best represented presettlement segment 1714-1881 was 8.0 years. Using all fire-associated ring features, MFI 1714-1962 was 7.0 years and 1714-1881, 6.0 years. Use of all fire-associated ring characteristics is argued to be a more accurate representation of past fire frequency. MFIs determined are less than others reported for coast redwood and suggest fire frequency in redwood may have been underestimated in past studies.

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36

Simard, Sonia. "Les épidémies de tordeuse des bourgeons de l'épinette à travers les arbres subfossiles /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 2003. http://theses.uqac.ca.

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37

COOK, EDWARD ROGER. "A TIME SERIES ANALYSIS APPROACH TO TREE RING STANDARDIZATION (DENDROCHRONOLOGY, FORESTRY, DENDROCLIMATOLOGY, AUTOREGRESSIVE PROCESS)." Diss., The University of Arizona, 1985. http://hdl.handle.net/10150/188110.

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The problem of standardizing closed-canopy forest ringwidth series is investigated. A biological model for the tree-ring standardization problem indicated that one class of non-climatic variance frequently responsible for standardization problems could be objectively minimized in theory. This is the variance caused by endogenous stand disturbances which create fluctuations in ringwidth series that are non-synchronous or out-of-phase when viewed across trees in a stand. A time series method based on the autoregressive process is developed which minimizes the timewise influence of endogenous disturbances in detrended ringwidth series. Signal-to-noise ratio (SNR) properties of this method are derived which indicate that autoregressive modelling and prewhitening of detrended ringwidth indices will result in a higher SNR when endogenous disturbances are present in the series. This enables the verification of the SNR theory and the error variance reduction property of the standardization method.

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38

Johnson, Marie. "Demography and dendrochronology of a disjunct population of eastern hemlock in Southwestern Ohio." Wright State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=wright1535073403943795.

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39

Hoshino, Yasuharu. "Dendrochronology of Japanese beech (Fagus crenata Bl.) on the eastern Honshu Island, Japan." Kyoto University, 2007. http://hdl.handle.net/2433/136427.

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Kyoto University (京都大学)
0048
新制・課程博士
博士(人間・環境学)
甲第13154号
人博第361号
新制||人||89(附属図書館)
18||D||162(吉田南総合図書館)
UT51-2007-H427
京都大学大学院人間・環境学研究科共生文明学
(主査)教授光谷拓実, 教授肥塚隆保, 助教授窪寺茂
学位規則第4条第1項該当

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40

Riverin, Stéphane. "Dynamique d'installation de la regénération dans une pessière ouverte à cladonie localisée dans la zone pessière noire fermée nord du Saguenay-Lac-Saint-Jean (Québec) /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 1994. http://theses.uqac.ca.

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41

Lawrence, Nathaniel Jo-Walker. "Fire History of an Acidic Barrens Complex: A Methods Assessment of Fire Return Intervals." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/99958.

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Fire-scarred trees provide an important source of data and direct evidence for understanding past fires and vegetation dynamics. Although dendrochronological fire scar records provide fine-scale temporal and spatial resolution, limitations exist in the development, analysis, and interpretation of these fire history datasets. In order to assess these limitations, we applied a systematic gridded sampling scheme to a 4-hectare study area located in the Ridge and Valley Province of northeastern Pennsylvania. We mapped and described a total of 155 fire-scarred trees within a 50-meter resolution grid, noting the species, health status, and basal scar orientation for each tree. Additionally, we cut a full or partial cross section from 58 fire-scarred pitch pine (Pinus rigida) for the purpose of assessing multiple "filtering" techniques and for the development of a fire interval simulation model. The simulation model randomly selected trees from each grid cell to estimate fire return intervals at multiple spatial scales. Our results indicate that fire return intervals are dependent upon the definition of "recorder" years and influenced by various filtering methods, including minimum number and minimum percentage of trees scarred. For example, the number and length of fire intervals was greater when years prior to the initial scar were considered "non-recording" vs. "recording" and when a percentage scarred filter was applied. The simulation model provides an additional range of fire interval estimations that can be used by land managers to guide forest restoration and fire management objectives.
Master of Science

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42

Bergeron, Yves. "In Memoriam- Bernhard Denneler (1963-2007)." Tree-Ring Society, 2007. http://hdl.handle.net/10150/622544.

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43

Leavitt, Steven W. "Book Review: TRACE- Tree Rings in Archeaology, Climatology and Ecology Proceedings Series." Tree-Ring Society, 2007. http://hdl.handle.net/10150/622545.

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44

Csank, Adam Z. "Research Communication: An International Tree-Ring Isotope Data Bank- A Proposed Repository For Tree-Ring Isotopic Data." Tree-Ring Society, 2009. http://hdl.handle.net/10150/622606.

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The International Tree-Ring Data Bank (ITRDB) is an invaluable resource, providing access to a massive and growing cache of tree-ring data. Oxygen, carbon, nitrogen and hydrogen isotope treering studies, which have provided valuable climatic and ecological information, have proliferated for decades so an ITRDB expansion to include isotopic data would likewise benefit the scientific community. An international tree-ring isotope databank (ITRIDB) would: (1) allow development of transfer functions from extended isotopic data sets, (2) provide abundant tree-ring isotopic data for meta-analysis, and (3) encourage isotopic network studies. A Europe network already exists, but the international data bank proposed here would constitute a de facto global network. Associated information to be incorporated into the database includes not only the customary ITRDB entries, but also elements peculiar to isotope chronologies. As with the current ITRDB, submission of data would be voluntary and as such it will be crucial to have the support of the tree-ring isotope community to contribute existing and forthcoming isotope series. The plan is to institute this isotope database in 2010, administered by the National Climatic Data Center.

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45

Rauchfuss, Julia. "Software Review Autobox And Its Use In Dendroecology." Tree-Ring Society, 2011. http://hdl.handle.net/10150/622628.

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46

Bruening, Jamis M., Tyler J. Tran, Andrew G. Bunn, Stuart B. Weiss, and Matthew W. Salzer. "Fine-scale modeling of bristlecone pine treeline position in the Great Basin, USA." IOP PUBLISHING LTD, 2017. http://hdl.handle.net/10150/622948.

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Great Basin bristlecone pine (Pinus longaeva) and foxtail pine (Pinus balfouriana) are valuable paleoclimate resources due to their longevity and climatic sensitivity of their annually-resolved rings. Treeline research has shown that growing season temperatures limit tree growth at and just below the upper treeline. In the Great Basin, the presence of precisely dated remnant wood above modern treeline shows that the treeline ecotone shifts at centennial timescales tracking long-term changes in climate; in some areas during the Holocene climatic optimum treeline was 100 meters higher than at present. Regional treeline position models built exclusively from climate data may identify characteristics specific to Great Basin treelines and inform future physiological studies, providing a measure of climate sensitivity specific to bristlecone and foxtail pine treelines. This study implements a topoclimatic analysis-using topographic variables to explain patterns in surface temperatures across diverse mountainous terrain-to model the treeline position of three semi-arid bristlecone and/or foxtail pine treelines in the Great Basin as a function of growing season length and mean temperature calculated from in situ measurements. Results indicate: (1) the treeline sites used in this study are similar to other treelines globally, and require a growing season length of between 147-153 days and average temperature ranging from 5.5 degrees C-7.2 degrees C, (2) site-specific treeline position models may be improved through topoclimatic analysis and (3) treeline position in the Great Basin is likely out of equilibrium with the current climate, indicating a possible future upslope shift in treeline position.

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47

Grissino-Mayer, Henri D. "The 2008 Ameridendro Awards." Tree-Ring Society, 2009. http://hdl.handle.net/10150/623360.

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Fowler, Anthony, A. Lorrey, and P. Crossley. "Erratum." Tree-Ring Society, 2010. http://hdl.handle.net/10150/623361.

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Leavitt, Steven W. "Acknowledgment Of Reviewers (2002-2009)." Tree-Ring Society, 2010. http://hdl.handle.net/10150/623362.

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50

Guiot, Joel. "In Memoriam- Laurent Misson (1971–2010)." Tree-Ring Society, 2010. http://hdl.handle.net/10150/623363.

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Dissertations / Theses on the topic 'Dendrochronology'

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