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The value of adding optics to ecosystem models:a case study
value optics ecosystem models case study
2010/1/14
Many ecosystem models have been developed to study the ocean's biogeochemical properties, but most of these models use simple formulations to describe light penetration and spectral quality. Here, an ...
Net ecosystem carbon exchange in three contrasting Mediterranean ecosystems – the effect of drought
Net ecosystem carbon exchange Mediterranean ecosystems effect of drought
2010/1/14
Droughts reduce gross primary production (GPP) and ecosystem respiration (Reco), contributing to most of the inter-annual variability in terrestrial carbon sequestration. In seasonally dry climates (M...
Characterizing ecosystem-atmosphere interactions from short to interannual time scales
ecosystem-atmosphere interactions short time scales interannual time scales
2010/1/14
Characterizing ecosystem-atmosphere interactions in terms of carbon and water exchange on different time scales is considered a major challenge in terrestrial biogeochemical cycle research. The respec...
Assessing the ability of three land ecosystem models to simulate gross carbon uptake of forests from boreal to Mediterranean climate in Europe
three land ecosystem models gross carbon uptake forests Mediterranean climate
2010/1/14
Three terrestrial biosphere models (LPJ, Orchidee, Biome-BGC) were evaluated with respect to their ability to simulate large-scale climate related trends in gross primary production (GPP) across Europ...
Scaling net ecosystem production and net biome production over a heterogeneous region in the western United States
net ecosystem production net biome production heterogeneous region
2010/1/14
Bottom-up scaling of net ecosystem production (NEP) and net biome production (NBP) was used to generate a carbon budget for a large heterogeneous region (the state of Oregon, 2.5×105 km2) in the weste...
Nitrogen assimilation and short term retention in a nutrient-rich tidal freshwater marsh – a whole ecosystem 15N enrichment study
Nitrogen assimilation short term retention nutrient-rich tidal freshwater marsh
2010/1/14
An intact tidal freshwater marsh system (3477 m2) was labelled by adding 15N-ammonium as a tracer to the flood water inundating the ecosystem. The appearance and retention of 15N-label in different ma...
Towards a standardized processing of Net Ecosystem Exchange measured with eddy covariance technique:algorithms and uncertainty estimation
standardized processing Net Ecosystem Exchange eddy covariance technique
2010/1/13
Eddy covariance technique to measure CO2, water and energy fluxes between biosphere and atmosphere is widely spread and used in various regional networks. Currently more than 250 eddy covariance sites...
Water use strategies and ecosystem-atmosphere exchange of CO2 in two highly seasonal environments
Water use strategies ecosystem-atmosphere exchange CO2 seasonal environments
2010/1/13
We compare assimilation and respiration rates, and water use strategies in four divergent ecosystems located in cold-continental central Siberia and in semi-arid southern Africa. These seemingly unrel...
Anoxic sediments off Central Peru record interannual to multidecadal changes of climate and upwelling ecosystem during the last two centuries
Anoxic sediments Central Peru record climate and upwelling ecosystem the last two centuries
2010/1/25
Observations under polarized microscope show that light laminae are dominated by more dense, detrital and terrigenous material, while dark laminae are less dense with greater concentrations of amorpho...
Changes in the diet of hake associated with El Niño 1997−1998 in the northern Humboldt Current ecosystem
hake El Niñ o 1997− 1998 the northern Humboldt Current ecosystem
2010/1/25
Hake (Merluccius gayi peruanus) predation plays an important role in the dynamics of the Humboldt Current ecosystem (HCE). Changes in the hake trophic habits associated with physical variability are e...
Net ecosystem exchange of carbon dioxide and water of far eastern Siberian Larch (Larix cajanderii) on permafrost
Net ecosystem exchange carbon dioxide far eastern Siberian Larch permafrost
2010/1/7
Observations of the net ecosystem exchange of water and CO2 were made during two seasons in 2000 and 2001 above a Larch forest in Far East Siberia (Yakutsk). The measurements were obtained by eddy cor...