Publications de Kristen Marie Krumhardt

Natural and anthropogenic variations in methane sources during the past two millennia

Jed Oliver Kaplan, Kristen Marie Krumhardt

Methane is an important greenhouse gas that is emitted from multiple natural and anthropogenic sources. Atmospheric methane concentrations have varied on a number of time scales in the past, but what has caused these variations is not always well understoo ...

Nature Publishing Group2012

The effects of land use and climate change on the carbon cycle of Europe over the past 500 years

Jed Oliver Kaplan, Kristen Marie Krumhardt

The long residence time of carbon in forests and soils means that both the current state and future behavior of the terrestrial biosphere are influenced by past variability in climate and anthropogenic land use. Over the last half-millennium, European terr ...

2012

Holocene carbon emissions as a result of anthropogenic land cover change

Jed Oliver Kaplan, Kristen Marie Krumhardt

Humans have altered the Earth’s land surface since the Paleolithic mainly by clearing woody vegetation first to improve hunting and gathering opportunities, and later to provide agricultural cropland. In the Holocene, agriculture was established on nearly ...

2011

The prehistoric and preindustrial deforestation of Europe

Jed Oliver Kaplan, Kristen Marie Krumhardt

Humans have transformed Europe’s landscapes since the establishment of the first agricultural societies in the mid-Holocene. The most important anthropogenic alteration of the natural environment was the clearing of forests to establish cropland and pastur ...

2009