ABSTRACT Modification of forest trees can occur from a variety of factors. Both cultural and natural processes can injure trees and many injuries can be dated dendrochronologically. Distinguishing between types of injuries, however, is important for understanding past human land-use practices and delineating different activities or processes that impact the forest. In the Zuni Mountains of New Mexico, USA, we have identified trees intentionally peeled for their cambial layer and unintentionally damaged trees whose scars resemble cambium-peeled trees. Both detailed attribute recording and dendrochronological dating were used to identify past exploitation of this ponderosa pine forest.
{"title":"Culturally Modified Trees: Peeled and Scarred Ponderosa Pine Trees in the Zuni Mountains, New Mexico, USA","authors":"R. Towner, Rebecca R. Renteria","doi":"10.3959/TRR2021-12","DOIUrl":"https://doi.org/10.3959/TRR2021-12","url":null,"abstract":"ABSTRACT Modification of forest trees can occur from a variety of factors. Both cultural and natural processes can injure trees and many injuries can be dated dendrochronologically. Distinguishing between types of injuries, however, is important for understanding past human land-use practices and delineating different activities or processes that impact the forest. In the Zuni Mountains of New Mexico, USA, we have identified trees intentionally peeled for their cambial layer and unintentionally damaged trees whose scars resemble cambium-peeled trees. Both detailed attribute recording and dendrochronological dating were used to identify past exploitation of this ponderosa pine forest.","PeriodicalId":54416,"journal":{"name":"Tree-Ring Research","volume":"78 1","pages":"36 - 44"},"PeriodicalIF":1.6,"publicationDate":"2022-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45568756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Savannah A. Collins-Key, Maegen L. Rochner, Lauren A. Stachowiak, Elizabeth A. Schneider
ABSTRACT The Cumberland Homesteads Historic District, located on the Cumberland Plateau in East Tennessee, is home to one of the first and largest Homesteads projects attempted during the New Deal era. Although the settlement did not succeed in its original objective, the history of the Cumberland Homesteads has become a valued foundation of the local community, which in turn strives to protect the legacy of the Cumberland Homesteads Tower. To preserve the integrity of the structure as well as the historical integrity of the landscape, the Cumberland Homesteads Tower Association sought to date and potentially remove trees that were not present during the period of significance (prior to 1938). The majority of the trees in close proximity to the Tower were identified as Eastern hemlock (Tsuga canadensis (L.) Carrière) and 15 trees total were sampled. Additionally, three post oak (Quercus stellata Wangenh.) trees located in a historic ‘triangle’ across the highway from the Tower and targeted for removal were sampled. Samples were successfully dated, and ca. half of the hemlock were confirmed to have been planted after the construction of the Homesteads Tower. Additionally, post oaks analyzed near the Tower were dated back to the early 1800s, which motivated their protection in the midst of a road project threatening their survival.
{"title":"Using Dendroecology to Strengthen the Historic Integrity of Cumberland Homesteads Tower in Crossville, Tennessee","authors":"Savannah A. Collins-Key, Maegen L. Rochner, Lauren A. Stachowiak, Elizabeth A. Schneider","doi":"10.3959/TRR2021-11","DOIUrl":"https://doi.org/10.3959/TRR2021-11","url":null,"abstract":"ABSTRACT The Cumberland Homesteads Historic District, located on the Cumberland Plateau in East Tennessee, is home to one of the first and largest Homesteads projects attempted during the New Deal era. Although the settlement did not succeed in its original objective, the history of the Cumberland Homesteads has become a valued foundation of the local community, which in turn strives to protect the legacy of the Cumberland Homesteads Tower. To preserve the integrity of the structure as well as the historical integrity of the landscape, the Cumberland Homesteads Tower Association sought to date and potentially remove trees that were not present during the period of significance (prior to 1938). The majority of the trees in close proximity to the Tower were identified as Eastern hemlock (Tsuga canadensis (L.) Carrière) and 15 trees total were sampled. Additionally, three post oak (Quercus stellata Wangenh.) trees located in a historic ‘triangle’ across the highway from the Tower and targeted for removal were sampled. Samples were successfully dated, and ca. half of the hemlock were confirmed to have been planted after the construction of the Homesteads Tower. Additionally, post oaks analyzed near the Tower were dated back to the early 1800s, which motivated their protection in the midst of a road project threatening their survival.","PeriodicalId":54416,"journal":{"name":"Tree-Ring Research","volume":"78 1","pages":"45 - 55"},"PeriodicalIF":1.6,"publicationDate":"2022-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47414986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Laura A. Dye, J. Pearl, Laura Smith, Bethany L Coulthard, Cori L. Butkiewicz, Z. Cooper, James Degrand, Jared Friedman, Inga K. Homfeld, H. Howard, Leroy Ironcloud, Shannon Wray
ABSTRACT The North American Dendroecological Field week (NADEF) is an intensive dendrochronology workshop, funded in part by the National Science Foundation. The 2019 Introductory Group at NADEF developed two precisely dated tree-ring width chronologies for Pinus contorta (lodgepole pine) and Pinus flexilis (limber pine) at the Wolf Knob site ca. 5 km west of Beartooth Lake, WY, within the bounds of the Shoshone National Forest (SNF), in the Greater Yellowstone Ecosystem (GYE). Wolf Knob is a semi-arid, S- to SW-facing, mid- to high-elevation site, making it an ideal location to examine the climate sensitivity of annual tree-ring width increments. Here, we show that two co-located Pinus species exhibit differing climate–growth relationships, with P. contorta exhibiting relatively weak correlations with precipitation (r = 0.37; p < 0.01) and temperature (r = –0.23; p < 0.05) during the late summer, and P. flexilis exhibiting stronger overall correlations with both cool-season (r = 0.48; p < 0.01) and warm-season precipitation (r = 0.51; p < 0.01) as well as with snowpack records (r = 0.45; p < 0.05). Our results suggest these two Pinus species may face disparate threats in the face of regional climate change, with P. flexilis being particularly vulnerable to drought conditions and declining snowpacks in the GYE. The differing seasonal climate sensitivities of the two species is likely caused by microsite conditions (e.g. soil moisture capacity, incoming solar radiation) and distinct species-climate responses, underscoring the importance of not only site selection, but also microsite and individual selection in dendroclimatological sampling. Finally, this work contributes to identifying Snow Water Equivalent (SWE)-sensitive tree-ring proxies in the GYE, critical for understanding ongoing warming-induced snowpack declines across western North America, particularly given the projections of a largely snow-free (April 1) GYE by 2075.
{"title":"Co-Occurring Wyoming Pinus Species Exhibit Differing Climate–Growth Relationships","authors":"Laura A. Dye, J. Pearl, Laura Smith, Bethany L Coulthard, Cori L. Butkiewicz, Z. Cooper, James Degrand, Jared Friedman, Inga K. Homfeld, H. Howard, Leroy Ironcloud, Shannon Wray","doi":"10.3959/TRR2021-5","DOIUrl":"https://doi.org/10.3959/TRR2021-5","url":null,"abstract":"ABSTRACT The North American Dendroecological Field week (NADEF) is an intensive dendrochronology workshop, funded in part by the National Science Foundation. The 2019 Introductory Group at NADEF developed two precisely dated tree-ring width chronologies for Pinus contorta (lodgepole pine) and Pinus flexilis (limber pine) at the Wolf Knob site ca. 5 km west of Beartooth Lake, WY, within the bounds of the Shoshone National Forest (SNF), in the Greater Yellowstone Ecosystem (GYE). Wolf Knob is a semi-arid, S- to SW-facing, mid- to high-elevation site, making it an ideal location to examine the climate sensitivity of annual tree-ring width increments. Here, we show that two co-located Pinus species exhibit differing climate–growth relationships, with P. contorta exhibiting relatively weak correlations with precipitation (r = 0.37; p < 0.01) and temperature (r = –0.23; p < 0.05) during the late summer, and P. flexilis exhibiting stronger overall correlations with both cool-season (r = 0.48; p < 0.01) and warm-season precipitation (r = 0.51; p < 0.01) as well as with snowpack records (r = 0.45; p < 0.05). Our results suggest these two Pinus species may face disparate threats in the face of regional climate change, with P. flexilis being particularly vulnerable to drought conditions and declining snowpacks in the GYE. The differing seasonal climate sensitivities of the two species is likely caused by microsite conditions (e.g. soil moisture capacity, incoming solar radiation) and distinct species-climate responses, underscoring the importance of not only site selection, but also microsite and individual selection in dendroclimatological sampling. Finally, this work contributes to identifying Snow Water Equivalent (SWE)-sensitive tree-ring proxies in the GYE, critical for understanding ongoing warming-induced snowpack declines across western North America, particularly given the projections of a largely snow-free (April 1) GYE by 2075.","PeriodicalId":54416,"journal":{"name":"Tree-Ring Research","volume":"78 1","pages":"13 - 24"},"PeriodicalIF":1.6,"publicationDate":"2022-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44311302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ABSTRACT We present the first network of tree-ring chronologies for co-occurring Nothofagus nervosa and Nothofagus obliqua in Argentina. Using standard dendrochronological techniques, we developed seven tree-ring width chronologies for each species, encompassing their E-W distribution along a precipitation gradient. Chronology statistics indicated that N. nervosa and N. obliqua are strong candidates for research in dendrochronology. The chronologies were used to study and compare the temporal and spatial growth patterns of each species. Correlation and principal components analysis of the tree-ring chronologies serve as evidence of a strong common signal, indicating shared regional growth patterns across the gradient with some exceptions between sites and species. These results indicate the high potential of N. nervosa and N. obliqua for their use in dendroclimatology.
{"title":"The First Network of Tree-Ring Chronologies for Co-Occurring Nothofagus nervosa and Nothofagus obliqua along a Precipitation Gradient in Patagonia, Argentina","authors":"Anabela Bonada, M. Amoroso, Z. Gedalof","doi":"10.3959/TRR2021-8","DOIUrl":"https://doi.org/10.3959/TRR2021-8","url":null,"abstract":"ABSTRACT We present the first network of tree-ring chronologies for co-occurring Nothofagus nervosa and Nothofagus obliqua in Argentina. Using standard dendrochronological techniques, we developed seven tree-ring width chronologies for each species, encompassing their E-W distribution along a precipitation gradient. Chronology statistics indicated that N. nervosa and N. obliqua are strong candidates for research in dendrochronology. The chronologies were used to study and compare the temporal and spatial growth patterns of each species. Correlation and principal components analysis of the tree-ring chronologies serve as evidence of a strong common signal, indicating shared regional growth patterns across the gradient with some exceptions between sites and species. These results indicate the high potential of N. nervosa and N. obliqua for their use in dendroclimatology.","PeriodicalId":54416,"journal":{"name":"Tree-Ring Research","volume":"78 1","pages":"1 - 12"},"PeriodicalIF":1.6,"publicationDate":"2022-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49516788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. Griffin, Samantha T Porter, Matthew L. Trumper, Kate E. Carlson, D. Crawford, Daniel Schwalen, Colin H. McFadden
ABSTRACT High quality specimen digitization is becoming standard across the sciences, is relevant for curation of natural history collections, and must become a priority for dendrochronology. This paper overviews the enduring role of imaging in dendrochronology, summarizes the potential relevance of gigapixel macro photography of polished specimens, offers a long-term review of a commercial imaging system, and reports our progress imaging entire collections of specimens at ultra-high resolution. Our gigapixel images of polished specimens have proven effective for digital analyses, archiving, and education, and we believe macro photography may prove a lower cost and more broadly accessible digitization alternative to microtomy and X-rays. We advocate for gigapixel macro photography as one accessible and adaptable paradigm to elevate reflected light imaging standards in dendrochronology.
{"title":"Gigapixel Macro Photography of Tree Rings","authors":"D. Griffin, Samantha T Porter, Matthew L. Trumper, Kate E. Carlson, D. Crawford, Daniel Schwalen, Colin H. McFadden","doi":"10.3959/TRR2021-3","DOIUrl":"https://doi.org/10.3959/TRR2021-3","url":null,"abstract":"ABSTRACT High quality specimen digitization is becoming standard across the sciences, is relevant for curation of natural history collections, and must become a priority for dendrochronology. This paper overviews the enduring role of imaging in dendrochronology, summarizes the potential relevance of gigapixel macro photography of polished specimens, offers a long-term review of a commercial imaging system, and reports our progress imaging entire collections of specimens at ultra-high resolution. Our gigapixel images of polished specimens have proven effective for digital analyses, archiving, and education, and we believe macro photography may prove a lower cost and more broadly accessible digitization alternative to microtomy and X-rays. We advocate for gigapixel macro photography as one accessible and adaptable paradigm to elevate reflected light imaging standards in dendrochronology.","PeriodicalId":54416,"journal":{"name":"Tree-Ring Research","volume":"77 1","pages":"86 - 94"},"PeriodicalIF":1.6,"publicationDate":"2021-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44070423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Edilson Jimmy Requena-Rojas, M. Amoroso, G. Ticse-Otarola, Doris B. Crispin‐DelaCruz
ABSTRACT There is a significant dendrochronological gap in the Puna of the central Andes of Peru, which motivates research on new species. In this study, we present the first tree-ring chronologies of Escallonia myrtilloides. We collected samples at San Pedro Saño and Sapallanga in Peru, analyzed the anatomical characteristics that delimit the annual growth rings, and developed two tree-ring chronologies through conventional dendrochronological techniques. The tree-ring chronologies cover the period 1940–2015 (76 years) for San Pedro Saño and 1960–2015 (56 years) for Sapallanga. The E. myrtilloides chronologies presented similar values of mean sensitivity, Rbar and EPS to those recorded for Polylepis tarapacana, Polylepis pepei, and Polylepis rugulosa in the Puna region. The analysis of the climate-growth relationships indicated positive correlations with precipitation and negative correlations with temperature in particular months of the current growing season (October–April). This precipitation/temperature-sensitive record highlights the high value of E. myrtilloides for future studies on the influence of climate on tree growth in the central Andes.
摘要秘鲁安第斯山脉中部的普纳地区存在一个显著的树木年代差距，这激发了对新物种的研究。在这项研究中，我们提出了Escallonia myrtiloides的第一个树木年轮年表。我们在秘鲁的San Pedro Saño和Sapallaga采集了样本，分析了界定年轮的解剖特征，并通过传统的树木年代技术开发了两个年轮年表。圣佩德罗·萨尼奥的年轮年表涵盖1940年至2015年（76年），萨帕兰加的年轮年图涵盖1960年至2015年间（56年）。在E.myrtiloides年表中，平均灵敏度、Rbar和EPS的值与Puna地区的Polylepis tarapacana、Polylepiss pepei和Polylepips rugulosa的记录值相似。对气候增长关系的分析表明，在当前生长季节的特定月份（十月至四月），与降水呈正相关，与温度负相关。这一对降水/温度敏感的记录突出了杨梅对未来研究气候对安第斯山脉中部树木生长的影响的高价值。
{"title":"Assessing Dendrochronological Potential of Escallonia myrtilloides in the High Andes of Peru","authors":"Edilson Jimmy Requena-Rojas, M. Amoroso, G. Ticse-Otarola, Doris B. Crispin‐DelaCruz","doi":"10.3959/TRR2019-8","DOIUrl":"https://doi.org/10.3959/TRR2019-8","url":null,"abstract":"ABSTRACT There is a significant dendrochronological gap in the Puna of the central Andes of Peru, which motivates research on new species. In this study, we present the first tree-ring chronologies of Escallonia myrtilloides. We collected samples at San Pedro Saño and Sapallanga in Peru, analyzed the anatomical characteristics that delimit the annual growth rings, and developed two tree-ring chronologies through conventional dendrochronological techniques. The tree-ring chronologies cover the period 1940–2015 (76 years) for San Pedro Saño and 1960–2015 (56 years) for Sapallanga. The E. myrtilloides chronologies presented similar values of mean sensitivity, Rbar and EPS to those recorded for Polylepis tarapacana, Polylepis pepei, and Polylepis rugulosa in the Puna region. The analysis of the climate-growth relationships indicated positive correlations with precipitation and negative correlations with temperature in particular months of the current growing season (October–April). This precipitation/temperature-sensitive record highlights the high value of E. myrtilloides for future studies on the influence of climate on tree growth in the central Andes.","PeriodicalId":54416,"journal":{"name":"Tree-Ring Research","volume":"77 1","pages":"41 - 52"},"PeriodicalIF":1.6,"publicationDate":"2021-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48214864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ABSTRACT As the use of the increment borer is supposed to be invasive, there is a question of how coring affects subsequent growth or the health of various tree species. Ten Picea abies (L.) Karst. trees in the Beskydy Mts. (Czech Republic) were analysed nine years after coring by an increment borer (June 2011) to determine their anatomical and growth responses to the coring. Cores (13 per tree) were extracted at regular vertical and horizontal distances to evaluate the spatio-temporal pattern of the responses. Sixty percent of trees reacted to the increment boring by creating a vertical crack at the end of year 2011. Traumatic Resin Ducts (TRDs) appeared in all trees relatively soon after coring, with a predominance in the vertical axis. In the horizontal axis, TRDs gradually disappeared with increasing distance from the old coring hole. Overall the spatio-temporal occurrence of TRDs varied in the tree trunk. The immediacy of the response was indirectly dependent on the distance from the 2011 core. Trees responded by growth release the following year after coring as well. The duration of growth disturbances reached three years on average. The results show that P. abies trees are not critically endangered by increment borer coring.
{"title":"The Growth Responses of Picea abies (L.) Karst. to Increment Borer Wounding","authors":"A. Fabiánová, K. Šilhán","doi":"10.3959/TRR2020-13","DOIUrl":"https://doi.org/10.3959/TRR2020-13","url":null,"abstract":"ABSTRACT As the use of the increment borer is supposed to be invasive, there is a question of how coring affects subsequent growth or the health of various tree species. Ten Picea abies (L.) Karst. trees in the Beskydy Mts. (Czech Republic) were analysed nine years after coring by an increment borer (June 2011) to determine their anatomical and growth responses to the coring. Cores (13 per tree) were extracted at regular vertical and horizontal distances to evaluate the spatio-temporal pattern of the responses. Sixty percent of trees reacted to the increment boring by creating a vertical crack at the end of year 2011. Traumatic Resin Ducts (TRDs) appeared in all trees relatively soon after coring, with a predominance in the vertical axis. In the horizontal axis, TRDs gradually disappeared with increasing distance from the old coring hole. Overall the spatio-temporal occurrence of TRDs varied in the tree trunk. The immediacy of the response was indirectly dependent on the distance from the 2011 core. Trees responded by growth release the following year after coring as well. The duration of growth disturbances reached three years on average. The results show that P. abies trees are not critically endangered by increment borer coring.","PeriodicalId":54416,"journal":{"name":"Tree-Ring Research","volume":"77 1","pages":"74 - 85"},"PeriodicalIF":1.6,"publicationDate":"2021-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49630309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Abella‐Gutiérrez, R. Touchan, Jehren Boehm, K. Bolles, A. Trevino, Kelly L. Swarts, L. Uliana, D. Meko
ABSTRACT Drought in the North American Southwest is a recurring phenomenon. The knowledge of drought recurrence and severity is crucial for sustainable water resource management in the region. Tree-ring reconstructions of climate variables provide valuable indirect evidence of climate variability and elucidate the relationship between large-scale circulation anomalies and the climate in the region. Here we have developed a May–July Palmer Drought Severity Index (PDSI) reconstruction from tree-ring chronologies of Pseudotsuga menziesii from the Chiricahua Mountains (southeastern Arizona) for the period 1634–2017 CE. The driest period occurred at the beginning of the 21st Century (2000–2005), followed by 1666–1670, 1952–1956, and 1729–1734. Reconstructed PDSI of the Chiricahua Mountains shows a weak correlation with the El Niño-Southern Oscillation, with intermittent influence as previous studies have reported. The Pacific Decadal Oscillation accounts for the majority of the variability in the Chiricahua hydroclimate, except for the period from 1860–1950 when the predominant driver was the North Atlantic Oscillation.
{"title":"Oceanic Influence on Chiricahua Mountains Drought Observed in a 383-Year Douglas-Fir Reconstruction","authors":"J. Abella‐Gutiérrez, R. Touchan, Jehren Boehm, K. Bolles, A. Trevino, Kelly L. Swarts, L. Uliana, D. Meko","doi":"10.3959/TRR2020-7","DOIUrl":"https://doi.org/10.3959/TRR2020-7","url":null,"abstract":"ABSTRACT Drought in the North American Southwest is a recurring phenomenon. The knowledge of drought recurrence and severity is crucial for sustainable water resource management in the region. Tree-ring reconstructions of climate variables provide valuable indirect evidence of climate variability and elucidate the relationship between large-scale circulation anomalies and the climate in the region. Here we have developed a May–July Palmer Drought Severity Index (PDSI) reconstruction from tree-ring chronologies of Pseudotsuga menziesii from the Chiricahua Mountains (southeastern Arizona) for the period 1634–2017 CE. The driest period occurred at the beginning of the 21st Century (2000–2005), followed by 1666–1670, 1952–1956, and 1729–1734. Reconstructed PDSI of the Chiricahua Mountains shows a weak correlation with the El Niño-Southern Oscillation, with intermittent influence as previous studies have reported. The Pacific Decadal Oscillation accounts for the majority of the variability in the Chiricahua hydroclimate, except for the period from 1860–1950 when the predominant driver was the North Atlantic Oscillation.","PeriodicalId":54416,"journal":{"name":"Tree-Ring Research","volume":"77 1","pages":"63 - 73"},"PeriodicalIF":1.6,"publicationDate":"2021-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48444947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
B. Khasanov, A. Karpukhin, N. A. Krenke, M. Pevzner, O. Tarabardina, D. Vasyukov, M. V. Yermokhin, A. Savinetsky
ABSTRACT New oak tree-ring chronologies for European Russia built with subfossil oak wood excavated from the alluvial deposits of the Zapadnaya Dvina (Daugava) River and archaeological samples from Novgorod and Vyazma are presented. They have been matched with the nearest absolutely dated tree-ring chronology constructed in Polotsk (Republic of Belarus) and dated to the periods AD 649–1382 (Zapadnaya Dvina), AD 1059–1386 (Novgorod), and AD 1074–1306 (Vyazma). Dates have been further confirmed via comparison with subfossil oaks from Smarhon (Republic of Belarus) and Baltic 1 chronology as well as by radiocarbon dating. Newly built medieval chronologies can be used for dating and provenancing of oak wood originating from archaeological sites and natural archives.
{"title":"Long Oak Tree-Ring Chronologies from Central Russia and Their Potential for Dating","authors":"B. Khasanov, A. Karpukhin, N. A. Krenke, M. Pevzner, O. Tarabardina, D. Vasyukov, M. V. Yermokhin, A. Savinetsky","doi":"10.3959/TRR2020-5","DOIUrl":"https://doi.org/10.3959/TRR2020-5","url":null,"abstract":"ABSTRACT New oak tree-ring chronologies for European Russia built with subfossil oak wood excavated from the alluvial deposits of the Zapadnaya Dvina (Daugava) River and archaeological samples from Novgorod and Vyazma are presented. They have been matched with the nearest absolutely dated tree-ring chronology constructed in Polotsk (Republic of Belarus) and dated to the periods AD 649–1382 (Zapadnaya Dvina), AD 1059–1386 (Novgorod), and AD 1074–1306 (Vyazma). Dates have been further confirmed via comparison with subfossil oaks from Smarhon (Republic of Belarus) and Baltic 1 chronology as well as by radiocarbon dating. Newly built medieval chronologies can be used for dating and provenancing of oak wood originating from archaeological sites and natural archives.","PeriodicalId":54416,"journal":{"name":"Tree-Ring Research","volume":"77 1","pages":"53 - 62"},"PeriodicalIF":1.6,"publicationDate":"2021-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42535326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
It is with great sadness that we report the passing on 12 December 2020 of Richard (“Dick”) L. Warren, our esteemed colleague, advisor, teacher, and friend who for five decades anchored the Laboratory of Tree-Ring Research’s (LTRR) archaeological dating program. Countless archaeologists, dendrochronologists, anthropologists, climatologists, geologists, historians, and students benefitted from his breadth of experience, unmatched skill, high professional standards, astounding productivity, patience, and good humor. He was always willing to expand his responsibilities in enlarging the scope of dendroarchaeological theory, method, and applications in both the laboratory and the field. Faculty, staff, students, and visitors were enlightened by his readiness to describe and demonstrate the activities encompassed byLTRR’swide-ranging activities. It would be impossible to exaggerate his contributions to the education of students and scholars in the complexities of tree-ring analysis. His equal likely will not soon be seen again. Richard was born on 04 November 1931 as the eldest son of Dr. Aubrey W. and Zetha M. (Hendrickson) Warren of Sutherland, Nebraska. After graduating from Sutherland High School, he attended Nebraska Wesleyan University, worked as a signal electrician for the railroad, and then enlisted and spent several years in the Air Force, with assignments in Germany and the USA. He then returned to school, attending the University of Tennessee and graduating from theUniversity of Arizona with a degree in Anthropology in 1962. He joined LTRR in 1964 and officially retired from the University in 2004. Not one to break completely with dendrochronology, he continued to work part time at LTRR until 2015. Richard is survived by five siblings: Jean Ganzel of Seven Lakes North NC; Barbara Hendrix of Los Alamos NM; Margaret Gail Little (and husband, James) of Los Alamos NM; Bruce Warren of Los Alamos NM; and Michael Warren of New York NY. Richard had numerous nieces and nephews, each of whom enjoyed a special and unique relationship with their Uncle Dick. In addition to his focus on dendrochronology, Dick was an avid fly fisherman who traversed the western US in search of the elusive trout. Almost as much as fishing, he appreciated theMexican food of southern Arizona and maintained an active interest in University of Arizona athletics. During his career at LTRR, Dick joined John W. Hannah, Dennie O. Bowden III, and James A. Parks to form a cadre of extraordinarily skilled dendrochronologists comprising the backbone of the
{"title":"In Memoriam Richard Lee Warren 1931–2020","authors":"J. Dean, R. Towner","doi":"10.3959/trr2021-9","DOIUrl":"https://doi.org/10.3959/trr2021-9","url":null,"abstract":"It is with great sadness that we report the passing on 12 December 2020 of Richard (“Dick”) L. Warren, our esteemed colleague, advisor, teacher, and friend who for five decades anchored the Laboratory of Tree-Ring Research’s (LTRR) archaeological dating program. Countless archaeologists, dendrochronologists, anthropologists, climatologists, geologists, historians, and students benefitted from his breadth of experience, unmatched skill, high professional standards, astounding productivity, patience, and good humor. He was always willing to expand his responsibilities in enlarging the scope of dendroarchaeological theory, method, and applications in both the laboratory and the field. Faculty, staff, students, and visitors were enlightened by his readiness to describe and demonstrate the activities encompassed byLTRR’swide-ranging activities. It would be impossible to exaggerate his contributions to the education of students and scholars in the complexities of tree-ring analysis. His equal likely will not soon be seen again. Richard was born on 04 November 1931 as the eldest son of Dr. Aubrey W. and Zetha M. (Hendrickson) Warren of Sutherland, Nebraska. After graduating from Sutherland High School, he attended Nebraska Wesleyan University, worked as a signal electrician for the railroad, and then enlisted and spent several years in the Air Force, with assignments in Germany and the USA. He then returned to school, attending the University of Tennessee and graduating from theUniversity of Arizona with a degree in Anthropology in 1962. He joined LTRR in 1964 and officially retired from the University in 2004. Not one to break completely with dendrochronology, he continued to work part time at LTRR until 2015. Richard is survived by five siblings: Jean Ganzel of Seven Lakes North NC; Barbara Hendrix of Los Alamos NM; Margaret Gail Little (and husband, James) of Los Alamos NM; Bruce Warren of Los Alamos NM; and Michael Warren of New York NY. Richard had numerous nieces and nephews, each of whom enjoyed a special and unique relationship with their Uncle Dick. In addition to his focus on dendrochronology, Dick was an avid fly fisherman who traversed the western US in search of the elusive trout. Almost as much as fishing, he appreciated theMexican food of southern Arizona and maintained an active interest in University of Arizona athletics. During his career at LTRR, Dick joined John W. Hannah, Dennie O. Bowden III, and James A. Parks to form a cadre of extraordinarily skilled dendrochronologists comprising the backbone of the","PeriodicalId":54416,"journal":{"name":"Tree-Ring Research","volume":"77 1","pages":"95 - 96"},"PeriodicalIF":1.6,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49181416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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