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Papers by Jennifer Marlon
Proceedings of the National Academy of Sciences of the United States of America, 2012
Synchroneity in Background Charcoal Records From the Northwestern U.S
Holocene fire-histories have been reconstructed from charcoal accumulation rates (CHAR) in lakes,... more Holocene fire-histories have been reconstructed from charcoal accumulation rates (CHAR) in lakes, bogs, and forest soils. "Peaks" in the CHAR data represent discrete fire events or intervals with frequent fires, while slowly varying trends represent "background" changes in regional burning, vegetation (biomass), and/or depositional processes. Background CHAR (BCHAR) data were explored in 15 high-resolution macroscopic charcoal records from the northwestern
Quaternary Charcoal Records from Western North and South America: Linkages to Fire, Climate, and Vegetation Change
Particulate charcoal preserved in lake sediments has become an important tool for examining the l... more Particulate charcoal preserved in lake sediments has become an important tool for examining the long-term role of fire as an ecosystem process. The record of microscopic charcoal (100 micron diameter or less) offers information on regional burning patterns, whereas macroscopic particles travel less far and are used to infer local fire history. Reconstruction of past fire activity is based on
Geophysical Research Letters, 2015
The timing of initiation of human impacts on the global climate system is actively debated.
Climate of the Past, 2014
Biomass burning is a major source of greenhouse gases and influences regional to global climate. ... more Biomass burning is a major source of greenhouse gases and influences regional to global climate. Pre-industrial fire-history records from black carbon, charcoal and other proxies provide baseline estimates of biomass burning at local to global scales spanning millennia, and are thus useful to examine the role of fire in the carbon cycle and climate system. Here we use the specific biomarker levoglucosan together with black carbon and ammonium concentrations from the North Greenland Eemian (NEEM) ice cores (77.49 • N, 51.2 • W; 2480 m a.s.l) over
paleofire: An R package to analyse sedimentary charcoal records from the Global Charcoal Database to reconstruct past biomass burning
Computers & Geosciences, 2014
Disturbance Frequency Changes in Western North and South America During the Holocene
Fire is the dominant form of natural disturbance in temperate forested ecosystems, and as such, i... more Fire is the dominant form of natural disturbance in temperate forested ecosystems, and as such, it serves as a process that links climate change to biosphere response. High-resolution charcoal records from the western temperate forests of North and South America provide an opportunity to compare current and recent (pre-settlement) changes in disturbance frequency with those during the Holocene. Charcoal data
Eos, Transactions American Geophysical Union, 2011
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PALEOCLIMATE RECONSTRUCTIONS OF NEW ENGLAND FOR THE PAST 2000 YEARS FROM THE PALEO-ECOLOGICAL OBSERVATORY NETWORK (PALEON)
Response of biomass burning to climate changes and human activities during the past 12,000 years in Eastern North America
Downscaling US public opinion about climate change and the'Six Americas' to states, cities, and counties
Proceedings of the National Academy of Sciences of the United States of America, 2012
Fire in ice: Two millennia of Northern Hemisphere fire history from the Greenland NEEM ice core
Climate of the Past Discussions, 2014
Catalyzing Interdisciplinary Research on Climate Change: DISCCRS: Dissertations Initiative for the Advancement of Climate Change Research; Mesa, Arizona, 13–20 March 2010
Eos, Transactions American Geophysical Union, 2010
DISCCRS: Dissertations Initiative for the Advancement of Climate Change Research; Mesa, Arizona, ... more DISCCRS: Dissertations Initiative for the Advancement of Climate Change Research; Mesa, Arizona, 13-20 March 2010; Each year, the Dissertations Initiative for the Advancement of Climate Change Research (DISCCRS; http://disccrs.org) brings together a select group of 34 recent Ph.D. graduates to facilitate peer networking and professional development and to encourage interdisciplinary research related to climate change. This year, the invited scholars
Geographic Variation in U.S. Climate Change Opinion at State and Local Scales
SSRN Electronic Journal, 2000
Bringing New Ph.D.s Together for Interdisciplinary Climate Change Research
Eos, Transactions American Geophysical Union, 2013
Climate change is complex and thus requires interdisciplinary research, and new scholars are risi... more Climate change is complex and thus requires interdisciplinary research, and new scholars are rising to that challenge. The Dissertations Initiative for the Advancement of Climate Change Research (DISCCRS (pronounced “discourse”); see http://www.disccrs.org) brings together select groups of recent PhD graduates to encourage interdisciplinary work on climate change. The DISCCRS Symposium VII held just outside of Colorado Springs, Colo., brought together
The Holocene, 2013
The significance and cause of the decline in biomass burning across the Americas after ad 1500 is... more The significance and cause of the decline in biomass burning across the Americas after ad 1500 is a topic of considerable debate. We synthesized charcoal records (a proxy for biomass burning) from the Americas and from the remainder of the globe over the past 2000 years, and compared these with paleoclimatic records and population reconstructions. A distinct post-ad 1500 decrease in biomass burning is evident, not only in the Americas, but also globally, and both are similar in duration and timing to 'Little Ice Age' climate change. There is temporal and spatial variability in the expression of the biomass-burning decline across the Americas but, at a regional-continental scale, 'Little Ice Age' climate change was likely more important than indigenous population collapse in driving this decline.
Proceedings of the National Academy of Sciences of the United States of America, 2012
Synchroneity in Background Charcoal Records From the Northwestern U.S
Holocene fire-histories have been reconstructed from charcoal accumulation rates (CHAR) in lakes,... more Holocene fire-histories have been reconstructed from charcoal accumulation rates (CHAR) in lakes, bogs, and forest soils. "Peaks" in the CHAR data represent discrete fire events or intervals with frequent fires, while slowly varying trends represent "background" changes in regional burning, vegetation (biomass), and/or depositional processes. Background CHAR (BCHAR) data were explored in 15 high-resolution macroscopic charcoal records from the northwestern
Quaternary Charcoal Records from Western North and South America: Linkages to Fire, Climate, and Vegetation Change
Particulate charcoal preserved in lake sediments has become an important tool for examining the l... more Particulate charcoal preserved in lake sediments has become an important tool for examining the long-term role of fire as an ecosystem process. The record of microscopic charcoal (100 micron diameter or less) offers information on regional burning patterns, whereas macroscopic particles travel less far and are used to infer local fire history. Reconstruction of past fire activity is based on
Geophysical Research Letters, 2015
The timing of initiation of human impacts on the global climate system is actively debated.
Climate of the Past, 2014
Biomass burning is a major source of greenhouse gases and influences regional to global climate. ... more Biomass burning is a major source of greenhouse gases and influences regional to global climate. Pre-industrial fire-history records from black carbon, charcoal and other proxies provide baseline estimates of biomass burning at local to global scales spanning millennia, and are thus useful to examine the role of fire in the carbon cycle and climate system. Here we use the specific biomarker levoglucosan together with black carbon and ammonium concentrations from the North Greenland Eemian (NEEM) ice cores (77.49 • N, 51.2 • W; 2480 m a.s.l) over
paleofire: An R package to analyse sedimentary charcoal records from the Global Charcoal Database to reconstruct past biomass burning
Computers & Geosciences, 2014
Disturbance Frequency Changes in Western North and South America During the Holocene
Fire is the dominant form of natural disturbance in temperate forested ecosystems, and as such, i... more Fire is the dominant form of natural disturbance in temperate forested ecosystems, and as such, it serves as a process that links climate change to biosphere response. High-resolution charcoal records from the western temperate forests of North and South America provide an opportunity to compare current and recent (pre-settlement) changes in disturbance frequency with those during the Holocene. Charcoal data
Eos, Transactions American Geophysical Union, 2011
[
PALEOCLIMATE RECONSTRUCTIONS OF NEW ENGLAND FOR THE PAST 2000 YEARS FROM THE PALEO-ECOLOGICAL OBSERVATORY NETWORK (PALEON)
Response of biomass burning to climate changes and human activities during the past 12,000 years in Eastern North America
Downscaling US public opinion about climate change and the'Six Americas' to states, cities, and counties
Proceedings of the National Academy of Sciences of the United States of America, 2012
Fire in ice: Two millennia of Northern Hemisphere fire history from the Greenland NEEM ice core
Climate of the Past Discussions, 2014
Catalyzing Interdisciplinary Research on Climate Change: DISCCRS: Dissertations Initiative for the Advancement of Climate Change Research; Mesa, Arizona, 13–20 March 2010
Eos, Transactions American Geophysical Union, 2010
DISCCRS: Dissertations Initiative for the Advancement of Climate Change Research; Mesa, Arizona, ... more DISCCRS: Dissertations Initiative for the Advancement of Climate Change Research; Mesa, Arizona, 13-20 March 2010; Each year, the Dissertations Initiative for the Advancement of Climate Change Research (DISCCRS; http://disccrs.org) brings together a select group of 34 recent Ph.D. graduates to facilitate peer networking and professional development and to encourage interdisciplinary research related to climate change. This year, the invited scholars
Geographic Variation in U.S. Climate Change Opinion at State and Local Scales
SSRN Electronic Journal, 2000
Bringing New Ph.D.s Together for Interdisciplinary Climate Change Research
Eos, Transactions American Geophysical Union, 2013
Climate change is complex and thus requires interdisciplinary research, and new scholars are risi... more Climate change is complex and thus requires interdisciplinary research, and new scholars are rising to that challenge. The Dissertations Initiative for the Advancement of Climate Change Research (DISCCRS (pronounced “discourse”); see http://www.disccrs.org) brings together select groups of recent PhD graduates to encourage interdisciplinary work on climate change. The DISCCRS Symposium VII held just outside of Colorado Springs, Colo., brought together
The Holocene, 2013
The significance and cause of the decline in biomass burning across the Americas after ad 1500 is... more The significance and cause of the decline in biomass burning across the Americas after ad 1500 is a topic of considerable debate. We synthesized charcoal records (a proxy for biomass burning) from the Americas and from the remainder of the globe over the past 2000 years, and compared these with paleoclimatic records and population reconstructions. A distinct post-ad 1500 decrease in biomass burning is evident, not only in the Americas, but also globally, and both are similar in duration and timing to 'Little Ice Age' climate change. There is temporal and spatial variability in the expression of the biomass-burning decline across the Americas but, at a regional-continental scale, 'Little Ice Age' climate change was likely more important than indigenous population collapse in driving this decline.