Evan R Larson
Biographic Data
| ID | 667459 |
|---|---|
| NAME | Evan R Larson |
| GIVEN NAMES | Evan R |
| FAMILY NAME | Larson |
| SIGNATURE | LARSON E R |
| AFFILIATIONS | University of Wisconsin–Platteville |
| ORCID | 0000-0001-6628-1659 |
| VERIFIED | Yes |
| TOTAL WORKS | 9 |
| TOTAL CITATIONS | 11 |
| WORKS AS AUTHOR | 9 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2008 |
| LATEST PUBLICATION YEAR | 2021 |
| H-INDEX | 1 |
People, Fire, and Pine
The creation and modification of landscape patterns through interactions among people and the environment is a defining focus in the discipline of geography. Here, we contribute to that tradition by placing 500 years of red pine (Pinus resinosa) tree-ring data in the context of archaeological, ethnographic, and paleoecological records to describe patterns of Anishinaabeg land use and fire occurrence in the Boundary Waters Canoe Area Wilderness (B…
Faces in the Wilderness
New dates from culturally modified red pine rediscovered in the Boundary Waters Canoe Area Wilderness in northern Minnesota provide an opportunity to merge tree-ring records of human land use with archaeological records, historical travel accounts, and traditional knowledge to enhance understanding of Anishinaabeg land tenure in the Wilderness. Records from 244 culturally modified trees (CMTs) demonstrate varying intensities of human use along hi…
Culturally Modified Red Pine, Birch-Bark Canoes, and the Strategic Geography of the Fur Trade on Lake Saganaga, Minnesota, U.S.A
The Dendroclimatological Potential of Willamette Valley Quercus garryana
We develop a 341-year Oregon white oak (Quercus garryana Dougl.) tree-ring chronology in Oregon's Willamette Valley to evaluate climate-growth relationships and determine the species' dendroclimatological potential at our site and in the surrounding region. The standardized and residual chronologies exhibit significant positive correlations with previous-year April and May temperatures, inverse correlations with previous-year spring precipitation…
Changing climate response in near-treeline bristlecone pine with elevation and aspect
In the White Mountains of California, eight bristlecone pine (Pinus longaeva) tree-ring width chronologies were developed from trees at upper treeline and just below upper treeline along North- and South-facing elevational transects from treeline to ~90 m below. There is evidence for a climate-response threshold between approximately 60–80 vertical m below treeline, above which trees have shown a positive growth-response to temperature and below …
The Need and Means To Update Chronologies In A Dynamic Environment
The International Tree-Ring Data Bank (ITRDB) provides public access to over 3000 tree-ring data sets collected over the past century, yet 809 of these sites have end dates between AD 1950 and 1980. These data cannot be calibrated with at least the past 30–40 years of instrumental data when used in climate reconstructions. We developed new tree-ring data sets at five sites in Maine, USA, to update earlier collections. Four of the five collections…
Ecological Disaster or the Limits of Observation? Reconciling Modern Declines with the Long-Term Dynamics of Whitebark Pine Communities
The history of whitebark pine (Pinus albicaulis) forests over the past century exemplifies modern environmental change and the particular challenges faced in reconciling the scales of human observation with long-term ecological changes. A number of factors are implicated in driving observed declines in whitebark pine populations including fire suppression, climate change, the exotic pathogenCronartium ribicolaand associated white pine blister rus…
An Assessment of the Dendroclimatic Potential of Three Conifer Species in Northern Minnesota
Ring-width chronologies from Pinus resinosa Ait., Pinus strobus L., and Thuja occidentalis L. were developed in two areas of the Boundary Waters Canoe Area Wilderness to assess their growth-climate response and their potential for developing reconstructions of climate. New red pine chronologies were combined with existing chronologies to extend the ring-width record both into the past and into the present. Ring-width response to climate, assessed…
Tree Establishment During Dry Spells at an Oak Savanna in Minnesota
Recent research has challenged the long-standing hypothesis that forests in the Upper Midwest of the United States developed during wetter periods and retreated during dry periods. We explored this debate by examining patterns of tree establishment on an oak savanna in east-central Minnesota within the context of variable moisture availability and fire suppression. We used superposed epoch analyses (SEA) to evaluate the mean moisture conditions f…
People, Fire, and Pine
The creation and modification of landscape patterns through interactions among people and the environment is a defining focus in the discipline of geography. Here, we contribute to that tradition by placing 500 years of red pine (Pinus resinosa) tree-ring data in the context of archaeological, ethnographic, and paleoecological records to describe patterns of Anishinaabeg land use and fire occurrence in the Boundary Waters Canoe Area Wilderness (B…
Tree Establishment During Dry Spells at an Oak Savanna in Minnesota
Recent research has challenged the long-standing hypothesis that forests in the Upper Midwest of the United States developed during wetter periods and retreated during dry periods. We explored this debate by examining patterns of tree establishment on an oak savanna in east-central Minnesota within the context of variable moisture availability and fire suppression. We used superposed epoch analyses (SEA) to evaluate the mean moisture conditions f…
An Assessment of the Dendroclimatic Potential of Three Conifer Species in Northern Minnesota
Ring-width chronologies from Pinus resinosa Ait., Pinus strobus L., and Thuja occidentalis L. were developed in two areas of the Boundary Waters Canoe Area Wilderness to assess their growth-climate response and their potential for developing reconstructions of climate. New red pine chronologies were combined with existing chronologies to extend the ring-width record both into the past and into the present. Ring-width response to climate, assessed…
Ecological Disaster or the Limits of Observation? Reconciling Modern Declines with the Long-Term Dynamics of Whitebark Pine Communities
The history of whitebark pine (Pinus albicaulis) forests over the past century exemplifies modern environmental change and the particular challenges faced in reconciling the scales of human observation with long-term ecological changes. A number of factors are implicated in driving observed declines in whitebark pine populations including fire suppression, climate change, the exotic pathogenCronartium ribicolaand associated white pine blister rus…
The Need and Means To Update Chronologies In A Dynamic Environment
The International Tree-Ring Data Bank (ITRDB) provides public access to over 3000 tree-ring data sets collected over the past century, yet 809 of these sites have end dates between AD 1950 and 1980. These data cannot be calibrated with at least the past 30–40 years of instrumental data when used in climate reconstructions. We developed new tree-ring data sets at five sites in Maine, USA, to update earlier collections. Four of the five collections…
Changing climate response in near-treeline bristlecone pine with elevation and aspect
In the White Mountains of California, eight bristlecone pine (Pinus longaeva) tree-ring width chronologies were developed from trees at upper treeline and just below upper treeline along North- and South-facing elevational transects from treeline to ~90 m below. There is evidence for a climate-response threshold between approximately 60–80 vertical m below treeline, above which trees have shown a positive growth-response to temperature and below …
The Dendroclimatological Potential of Willamette Valley Quercus garryana
We develop a 341-year Oregon white oak (Quercus garryana Dougl.) tree-ring chronology in Oregon's Willamette Valley to evaluate climate-growth relationships and determine the species' dendroclimatological potential at our site and in the surrounding region. The standardized and residual chronologies exhibit significant positive correlations with previous-year April and May temperatures, inverse correlations with previous-year spring precipitation…
Culturally Modified Red Pine, Birch-Bark Canoes, and the Strategic Geography of the Fur Trade on Lake Saganaga, Minnesota, U.S.A
Faces in the Wilderness
New dates from culturally modified red pine rediscovered in the Boundary Waters Canoe Area Wilderness in northern Minnesota provide an opportunity to merge tree-ring records of human land use with archaeological records, historical travel accounts, and traditional knowledge to enhance understanding of Anishinaabeg land tenure in the Wilderness. Records from 244 culturally modified trees (CMTs) demonstrate varying intensities of human use along hi…
People, Fire, and Pine
The creation and modification of landscape patterns through interactions among people and the environment is a defining focus in the discipline of geography. Here, we contribute to that tradition by placing 500 years of red pine (Pinus resinosa) tree-ring data in the context of archaeological, ethnographic, and paleoecological records to describe patterns of Anishinaabeg land use and fire occurrence in the Boundary Waters Canoe Area Wilderness (B…
Geography (9 works) · Environmental Science (7 works) · Archaeology (6 works) · Tree-ring climate responses (6 works) · Dendrochronology (5 works) · Ecology (5 works) · Plant Water Relations and Carbon Dynamics (5 works) · Biology (4 works) · Dendroclimatology (4 works) · Fire effects on ecosystems (4 works)