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Jed Oliver Kaplan

Cette personne a quitté l’EPFL

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Publications associées (44)

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Erratum to: The European Modern Pollen Database (EMPD) project

Jed Oliver Kaplan, Basil Andrew Stansfield Davis, Pamela Collins, Achille Mauri

Springer, Springer Berlin Heidelberg2013

Holocene land-cover reconstructions for studies on land cover-climate feedbacks

Jed Oliver Kaplan

The major objectives of this paper are: (1) to review the pros and cons of the scenarios of past anthropogenic land cover change (ALCC) developed during the last ten years, (2) to discuss issues related to pollen-based reconstruction of the past land-cover ...

2010

Used planet: A global history

Jed Oliver Kaplan

Human use of land has transformed ecosystem pattern and process across most of the terrestrial biosphere, a global change often described as historically recent and potentially catastrophic for both humanity and the biosphere. Interdisciplinary paleoecolog ...

National Academy of Sciences2013

Leaf area index for northern and eastern North America ad the Last Glacial Maximum: A data-model comparison

Jed Oliver Kaplan

Aim To estimate the effects of full-glacial atmospheric CO2 concentrations and climate upon leaf area index (LAI), using both global vegetation models and palaeoecological data. Prior simulations indicate lowered LAIs at the Last Glacial Maximum (LGM), but ...

2008

The effect of abrupt climatic warming on biogeochemical cycling and N2O emissions in a terrestrial ecosystem

Jed Oliver Kaplan, Mirjam Pfeiffer

The large, rapid increase in atmospheric N2O concentrations that occurred concurrent with the abrupt warming at the end of the Last Glacial period might have been the result of a reorganization in global biogeochemical cycles. To explore the sensitivity of ...

Elsevier Science Bv2013

Mid- to late Holocene climate change- an overview

Jed Oliver Kaplan, Stefan Müller

The last 6000 years are of particular interest to the understanding of the Earth System because the boundary conditions of the climate system did not change dramatically (in comparison to larger glacial–interglacial changes), and because abundant, detailed ...

2008

GAPPARD: a computationally efficient method of approximating gap-scale disturbance in vegetation models

Jed Oliver Kaplan

Models of vegetation dynamics that are designed for application at spatial scales larger than individual forest gaps suffer from several limitations. Typically, either a population average approximation is used that results in unrealistic tree allometry an ...

Copernicus Gesellschaft Mbh2013

The El Nino-Southern Oscillation and wetland methane interannual variability

Jed Oliver Kaplan

Global measurements of atmospheric methane (CH4) concentrations continue to show large interannual variability whose origin is only partly understood. Here we quantify the influence of the El Nino-Southern Oscillation (ENSO) on wetland CH4 emissions, which ...

American Geophysical Union2011

Exploring potential drivers of European biomass burning over the Holocene: a data-model analysis

Jed Oliver Kaplan

AimTo reconstruct spatial and temporal patterns of European fire activity during the Holocene and to explore their potential drivers, by relating biomass burning to simulated biotic and abiotic parameters. LocationEurope. MethodsHolocene fire activity was ...

Wiley-Blackwell2013

Magnitude and seasonality of wetland methane emissions from the Hudson Bay Lowlands (Canada)

Isabelle Bey, Jed Oliver Kaplan, Jérôme Drevet

The Hudson Bay Lowlands (HBL) is the second largest boreal wetland ecosystem in the world and an important natural source of global atmospheric methane. We quantify the HBL methane emissions by using the GEOS-Chem chemical transport model to simulate aircr ...

Copernicus Publications2011

Global emissions of terpenoid VOCs from terrestrial vegetation in the last millennium

Jed Oliver Kaplan

We investigated the millennial variability (1000 A.D.-2000 A.D.) of global biogenic volatile organic compound (BVOC) emissions by using two independent numerical models: The Model of Emissions of Gases and Aerosols from Nature (MEGAN), for isoprene, monote ...

Amer Geophysical Union2014

Could anthropogenic soil erosion have influenced Mediterranean vegetation distribution over the Holocene?

Jed Oliver Kaplan, Basil Andrew Stansfield Davis, Pamela Collins

The circum-Mediterranean region is characterized by a strongly seasonal climate with rainy winters and intense summertime drought, steep topography, and a multi-millennial history of intensive human land use, all of which make its soils vulnerable to erosi ...

IOP Publishing2010

Early Anthropogenic Transformation of the Danube-Black Sea System

Jed Oliver Kaplan

Over the last century humans have altered the export of fluvial materials leading to significant changes in morphology, chemistry, and biology of the coastal ocean. Here we present sedimentary, paleoenvironmental and paleogenetic evidence to show that the ...

Nature Publishing Group2012

Long-term pan evaporation observations as a resource to understand the water cycle trend: case studies from Australia

Jed Oliver Kaplan

Acceleration of the global water cycle over recent decades remains uncertain because of the high inter-annual variability of its components. Observations of pan evaporation (E-pan), a proxy of potential evapotranspiration (ETp), may help to identify trends ...

Taylor & Francis Ltd2013

The European Modern Pollen Database (EMPD) project

Jed Oliver Kaplan, Achille Mauri, Basil Andrew Stansfield Davis, Pamela Collins

Modern pollen samples provide an invaluable research tool for helping to interpret the quaternary fossil pollen record, allowing investigation of the relationship between pollen as the proxy and the environmental parameters such as vegetation, land-use, an ...

Springer Berlin Heidelberg2013

Comparison Between Reconstructions of Global Anthropogenic Land Cover Change over Past Two Millennia

Jed Oliver Kaplan

Three global datasets, the History Database of the Global Environment (HYDE), Kaplan and Krumhardt (KK) and Pongratz of reconstructed anthropogenic land cover change (ALCC) were introduced and compared in this paper. The HYDE dataset was reconstructed by G ...

Springer2013

Uncertainties in isoprene photochemistry and emissions: implications for the oxidative capacity of past and present atmospheres and for climate forcing agents

Jed Oliver Kaplan

Isoprene and its oxidation products are major players in the oxidative chemistry of the troposphere. Current understanding of the factors controlling biogenic isoprene emissions and of the fate of isoprene oxidation products in the atmosphere has been evol ...

Copernicus GmbH2015

Simulating future changes in Arctic and subarctic vegetation

Jed Oliver Kaplan

The Arctic is a sensitive system undergoing dramatic changes related to recent warming trends. Vegetation dynamics-increases in the quantity of green vegetation and a northward migration of trees into the arctic tundra-are a component of this change. Altho ...

2007

Flooding of the continental shelves as a contributor to deglacial CH4 rise

Jed Oliver Kaplan

The transition from the last glacial and beginning of BollingAllerod and Pre-Boreal periods in particular is marked by rapid increases in atmospheric methane (CH4) concentrations. The CH4 concentrations reached during these intervals, similar to 650750 ppb ...

Wiley-Blackwell2012

The influence of atmospheric circulation on the mid-Holocene climate of Europe: a data-model comparison

Jed Oliver Kaplan, Achille Mauri, Basil Andrew Stansfield Davis, Pamela Collins

The atmospheric circulation is a key area of uncertainty in climate model simulations of future climate change, especially in mid-latitude regions such as Europe where atmospheric dynamics have a significant role in climate variability. It has been propose ...

Copernicus Gesellschaft Mbh2014