Nina Buchmann
A5077323678- Plant Water Relations and Carbon Dynamics
- Atmospheric and Environmental Gas Dynamics
- Ecology and Vegetation Dynamics Studies
- Soil Carbon and Nitrogen Dynamics
- Tree-ring climate responses
- Climate variability and models
- Plant responses to elevated CO2
- Peatlands and Wetlands Ecology
- Forest ecology and management
- Plant and animal studies
- Botany and Plant Ecology Studies
- Species Distribution and Climate Change
- Fire effects on ecosystems
- Remote Sensing in Agriculture
- Soil and Water Nutrient Dynamics
- Hydrology and Watershed Management Studies
- Pasture and Agricultural Systems
- Isotope Analysis in Ecology
- Land Use and Ecosystem Services
- Soil and Unsaturated Flow
- Forest Management and Policy
- Rangeland and Wildlife Management
- Atmospheric chemistry and aerosols
- Cryospheric studies and observations
- Plant responses to water stress
ETH Zurich
2016-2025
Board of the Swiss Federal Institutes of Technology
2010-2023
National Bureau of Economic Research
2023
Stanford University
2023
FHNW University of Applied Sciences and Arts
2020
University of Zurich
2013-2019
École Polytechnique Fédérale de Lausanne
2004-2018
Klinikum rechts der Isar
2011-2017
Neurosurgeons of New Jersey
2017
Minnesota Department of Natural Resources
2016
There is growing recognition that classifying terrestrial plant species on the basis of their function (into 'functional types') rather than higher taxonomic identity, a promising way forward for tackling important ecological questions at scale ecosystems, landscapes or biomes. These include those vegetation responses to and effects on, environmental changes (e.g. in climate, atmospheric chemistry, land use other disturbances). also consensus about shortlist traits should underlie such...
Abstract This paper discusses the advantages and disadvantages of different methods that separate net ecosystem exchange (NEE) into its major components, gross carbon uptake (GEP) respiration ( R eco ). In particular, we analyse effect extrapolation night‐time values daytime; this is usually done with a temperature response function derived from long‐term data sets. For analysis, used 16 one‐year‐long sets dioxide measurements European US‐American eddy covariance networks. These sites span...
Plant functional traits are the features (morphological, physiological, phenological) that represent ecological strategies and determine how plants respond to environmental factors, affect other trophic levels influence ecosystem properties. Variation in plant traits, trait syndromes, has proven useful for tackling many important questions at a range of scales, giving rise demand standardised ways measure ecologically meaningful traits. This line research been among most fruitful avenues...
Abstract Plant traits—the morphological, anatomical, physiological, biochemical and phenological characteristics of plants—determine how plants respond to environmental factors, affect other trophic levels, influence ecosystem properties their benefits detriments people. trait data thus represent the basis for a vast area research spanning from evolutionary biology, community functional ecology, biodiversity conservation, landscape management, restoration, biogeography earth system...
Abstract The FLUXNET2015 dataset provides ecosystem-scale data on CO 2 , water, and energy exchange between the biosphere atmosphere, other meteorological biological measurements, from 212 sites around globe (over 1500 site-years, up to including year 2014). These sites, independently managed operated, voluntarily contributed their create global datasets. Data were quality controlled processed using uniform methods, improve consistency intercomparability across sites. is already being used...
Summary This paper presents CO 2 flux data from 18 forest ecosystems, studied in the European Union funded EUROFLUX project. Overall, mean annual gross primary productivity (GPP, total amount of carbon (C) fixed during photosynthesis) these forests was 1380 ± 330 gC m −2 y −1 (mean ±SD). On average, 80% GPP respired by autotrophs and heterotrophs released back into atmosphere (total ecosystem respiration, TER = 1100 260 ). Mean soil respiration (SR) 760 340 (55% 69% TER). Among investigated...
Significance Global food and biofuel production their vulnerability in a changing climate are of paramount societal importance. However, current global model predictions crop photosynthesis highly uncertain. Here we demonstrate that new space-based observations chlorophyll fluorescence, an emission intrinsically linked to plant biochemistry, enable accurate, global, time-resolved measurement photosynthesis, which is not possible from any other remote vegetation measurement. Our results show...
Analyses of carbon isotope ratios (δ13C) in soil organic matter (SOM) and respired CO2 provide insights into dynamics the cycle. δ13C analyses do not direct measures efflux rates but are useful as a constraint cycle models. In many cases, allow identification components well relative contribution to overall ecosystem fluxes. values unique tool for quantifying historical shifts between C3 C4 ecosystems over decadal millennial time scales, which relevant climate change land-use issues. We...
Photosynthesis and respiration impart distinct isotopic signatures to the atmosphere that are used constrain global carbon source/sink estimates partition ecosystem fluxes. Increasingly, “Keeling plot” method is being determine isotope composition of (δ 13 C R ) in order better understand processes controlling discrimination. In this paper we synthesize emergent patterns δ by analyzing 146 Keeling plots constructed at 33 sites across North South America. interpret results from disparate...
Agriculture has seen many revolutions, whether the domestication of animals and plants a few thousand years ago, systematic use crop rotations other improvements in farming practice hundred or “green revolution” with breeding widespread man-made fertilizers pesticides decades ago. We suggest that agriculture is undergoing fourth revolution triggered by exponentially increasing information communication technology (ICT) agriculture. New technologies, such as unmanned aerial vehicles...
Abstract The European CARBOEUROPE/FLUXNET monitoring sites, spatial remote sensing observations via the EOS‐MODIS sensor and ecosystem modelling provide independent complementary views on effect of 2003 heatwave biosphere's productivity carbon balance. In our analysis, these data streams consistently demonstrate a strong negative anomaly primary during summer 2003. FLUXNET eddy‐covariance indicate that drop in was not primarily caused by high temperatures (‘heat stress’) but rather...
Half‐hourly measurements of the net exchanges carbon dioxide and water vapor between terrestrial ecosystems atmosphere provide estimates gross primary production (GPP) evapotranspiration (ET) at ecosystem level on daily to annual timescales. The ratio these quantities represents use efficiency. Its multiplication with mean daylight pressure deficit (VPD) leads a quantity which we call “inherent efficiency” (IWUE*). dependence IWUE* environmental conditions indicates possible adaptive...
Abstract Estimates of carbon leaching losses from different land use systems are few and their contribution to the net ecosystem balance is uncertain. We investigated dissolved organic (DOC), inorganic (DIC), methane (CH 4 ), at forests, grasslands, croplands across Europe. Biogenic contributions DIC were estimated by means its δ 13 C signature. Leaching biogenic was 8.3±4.9 g m −2 yr −1 for 24.1±7.2 14.6±4.8 croplands. DOC equalled 3.5±1.3 5.3±2.0 4.1±1.3 The average flux total 19.4±4.0 ....
In the past two decades, a large number of studies have investigated relationship between biodiversity and ecosystem functioning, most which focussed on limited set variables. The Jena Experiment was up in 2002 to investigate effects plant diversity element cycling trophic interactions, using multi-disciplinary approach. Here, we review results 15 years research Experiment, focussing manipulating species richness functional richness. With more than 85,000 measures taken from plots, has...