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Dr. B. Kruijt

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  • Drought and ecosystem carbon cycling (2011)

    Authors:Molen, van der M.K.; Dolman, A.J.; Ciais, P.; Eglin, T.; Gobron, N.; Law, B.E.; Meir, P.; Peters, W.; Philips, O.L.; Hurk, van den B.J.J.M.; Jeu, M.; Kruijt, B.; Teuling, A.J.; Werf, van der G.R.; Wang, G.
    In:Agricultural and Forest Meteorology, 151(7), 765 - 773. ISSN 0168-1923.

    Abstract:

    Drought as an intermittent disturbance of the water cycle interacts with the carbon cycle differently than the ‘gradual’ climate change. During drought plants respond physiologically and structurally to prevent excessive water loss according to species-specific water use strategies. This has consequ

  • Assessing the uncertainty of estimated annual totals of net ecosystem productivityAssessing the uncertainty of estimated annual totals of net ecosystem productivity: A practical approach applied to a mid latitude temperate pine forest (2011)

    Authors:Elbers, J.A.; Jacobs, C.M.J.; Kruijt, B.; Jans, W.W.P.; Moors, E.J.
    In:Agricultural and Forest Meteorology, 151(12), 1823 - 1830. ISSN 0168-1923.

    Abstract:

    Values for annual NEP of micrometeorological tower sites are usually published without an estimate of associated uncertainties. Few authors quantify total uncertainty of annual NEP. Moreover, different methods to assess total uncertainty are applied, usually addressing only one aspect of the uncerta

  • The spatial variability of CO2 storage and the interpretation of eddy covariance fluxes in central Amazonia (2010)

    Authors:Araujo, de A.C.; Dolman, H.; Waterloo, M.J.; Gash, J.H.C.; Kruijt, B.; Zanchi, F.B.; Lange, J.M.E.; Stoevelaar, R.; Manzi, A.O.; Nobre, A.D.; Lootens, R.N.; Backer, J.
    In:Agricultural and Forest Meteorology, 150(2), 226 - 237. ISSN 0168-1923.

    Abstract:

    The landscape of central Amazonia is composed of plateaus and valleys. Previous observations have shown preferential pooling of CO2 in the valleys, suggesting that the change in CO2 storage in the canopy air space (S) will be spatially variable at the scale of the topography. This may affect the int

  • Carbon exchange of a maize (Zea mays L.) crop: Influence of phenology (2010)

    Authors:Jans, W.W.P.; Jacobs, C.M.J.; Kruijt, B.; Elbers, J.A.; Barendse, S.C.A.; Moors, E.J.
    In:Agriculture, Ecosystems and Environment, 139(3), 316 - 324. ISSN 0167-8809.

  • Variability in carbon exchange of European croplands (2010)

    Authors:Moors, E.J.; Jacobs, C.M.J.; Jans, W.W.P.; Supit, I.; Werners, S.E.; Kutsch, W.L.; Elbers, J.A.; Kruijt, B.
    In:Agriculture, Ecosystems and Environment, 139(3), 325 - 335. ISSN 0167-8809.

    Abstract:

    The estimated net ecosystem exchange (NEE) of CO2 based on measurements at 17 flux sites in Europe for 45 cropping periods showed an average loss of −38 gC m−2 per cropping period. The cropping period is defined as the period after sowing or planting until harvest. The variability taken as the stand

  • Measurements of soil respiration and simple models dependent on moisture and temperature for an Amazonian southwest tropical forest (2009)Open access

    Authors:Zanchi, F.B.; Da Rocha, H.R.; De Freitas, H.C.; Kruijt, B.; Waterloo, M.J.; Manzi, A.O.
    In:Biogeosciences Discussions, 6(3), 6147 - 6177. ISSN 1810-6277.

    Abstract:

    Soil respiration plays a significant role in the carbon cycle of Amazonian tropical forests, although in situ measurements have only been poorly reported and the dependence of soil moisture and soil temperature also weakly understood. This work investigates the temporal variability of soil respirati

  • Estimativa do Índice de Área Foliar (IAF) e Biomassa em pastagem no estado de Rondônia, Brasil (2009)Open access

    Authors:Zanchi, F.B.; Waterloo, M.J.; Randow, von C.; Kruijt, B.; Cardoso, F.L.; Manzi, A.O.
    In:Acta Amazonica, 39(2), 335 - 348. ISSN 0044-5967.

    Abstract:

    Medidas mensais da altura da pastagem, biomassa total, variações de biomassa viva e morta, a área específica foliar (SLA) e o Índice de Área de Folha (IAF) de fevereiro de 1999 a janeiro de 2005 na Fazenda Nossa Senhora (FNS) e em Rolim de Moura (RDM) entre Fevereiro a Março de 1999, Rondônia, Brasi

  • Opinion Flux towers in the Amazon forests (2009)

    Author:Kruijt, B.
    In:FluxLetter, 2(3), 5 - 6

  • Patterns of water and heat flux across a biome gradient from tropical forest to savanna in Brazil (2009)Open access

    Authors:Rocha, da H.R.; Manzi, A.O.; Cabral, O.M.; Miller, S.D.; Goulden, M.L.; Saleska, S.R.; Coupe, N.R.; Wofsy, S.C.; Borma, L.S.; Artaxo, P.; Vourlitis, G.; Nogueira, J.S.; Cardoso, F.L.; Nobre, A.D.; Kruijt, B.; Freitas, H.C.; Randow, von C.; Aguiar, R.G.; Maia, J.F.
    In:Journal of Geophysical Research. D, Atmospheres, 114. ISSN 2169-897x.

    Abstract:

    We investigated the seasonal patterns of water vapor and sensible heat flux along a tropical biome gradient from forest to savanna. We analyzed data from a network of flux towers in Brazil that were operated within the Large-Scale Biosphere-Atmosphere Experiment in Amazonia (LBA). These tower sites

  • Exploring eddy-covariance and large-aperture scintillometer measurements in an Amazonian rain forest (2008)

    Authors:Randow, von C.; Kruijt, B.; Holtslag, A.A.M.; Oliveira, de M.B.L.
    In:Agricultural and Forest Meteorology, 148(4), 680 - 690. ISSN 0168-1923.

    Abstract:

    A large-aperture scintillometer (LAS) is used to estimate the surface sensible heat fluxes in an Amazonian rain forest site, and these fluxes are compared with an eddy-covariance system (EC) to analyze conditions of low-frequency modulation in the surface layer. The results show that the flux estima

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