Uncertainties of Nitrogen Fixation in a Dynamic Global Vegetation Model

<p>Poster presented at the EGU conference, Vienna, 2015</p

Data for repository_final

The Excelfile provided comprises two data sheets. On the first sheet the calibration data for measurement 2-4 for the 60 sensors are given. On the second sheet, the minimum conductivity value measured in the field without any water present is given. The values are already temperature-corrected

Nitrogen and Carbon fixation by cryptogams

<p>Carbon and Nitrogen fixation by cryptogamic ground and plant cover in g/m^2/yr as published in Fig. 3 (MODIS)  and S2 (Olson) of Elbert et al. (2012), DOI:10.1038/ngeo1486</p> <p>Each file contains 3 variables:</p> <p>CGC: fixation by cryptogamic ground cover<br>CPC: fixation by cryptogamic plant cover<br>CGC_CPC: the sum of both</p> <p>Keep in mind that not all ecosystems were covered and "empty" areas or low values do not mean nothing is fixed there by cryptogams. If you have further qustions don't hesitate to ask.</p> <p>Please cite the original article, if you use this dataset.</p> <p> </p> <p> </p

Identification and quantification of giant bioaerosol particles over the Amazon rainforest

Abstract: Eukarya dominate the coarse primary biological aerosol (PBA) above the Amazon rainforest canopy, but their vertical profile and seasonality is currently unknown. In this study, the stratification of coarse and giant PBA >5 µm were analyzed from the canopy to 300 m height at the Amazon Tall Tower Observatory in Brazil during the wet and dry seasons. We show that >2/3 of the coarse PBA were canopy debris, fungal spores commonly found on decaying matter were second most abundant (ranging from 15 to 41%), followed by pollens (up to 5%). The atmospheric roughness layer right above the canopy had the greatest giant PBA abundance. Measurements over 5 years showed an increased abundance of PBA during a low-rainfall period. Giant particles, such as pollen, are reduced at 300 m, suggesting their limited dispersal. These results give insights into the giant PBA emissions of this tropical rainforest, and present a major step in understanding the type of emitted particles and their vertical distribution.</p