This website presents population change information for more than 400 species of North American birds, as estimated from the North American Breeding Bird Survey. Estimates of trend (interval-specific estimates of population change), annual indices of abundance, and maps of abundance and population change for these species are presented for a variety of regions.
ABCDEFG (Access to Biological Collection Databases Extended for Geosciences) is an XML-Schema (Extensible Markup Language) developed for the usage with paleontological, mineralogical and geological digitalized collection data. It extends the ABCD-XML-Schema (Access to Biological Collection Databases) used by GBIF (Global Biodiversity Iformation Facility; https://www.gbif.org). The ABCDEFG-XML-Schema is used to map data sources with individual data models to a standardized data schema with well documented terms and descriptions.
Shifting patterns of oil palm driven deforestation in Indonesia and implications for zero-deforestation commitments (Dataset)K.G. Austin, A. Mosnier, J. Pirker, I. McCallum, S. Fritz & P.S. Kasibhatla
This dataset contains maps of industrial oil palm plantations in Indonesia for the years 1995, 2000, 2005, 2010, 2015. This dataset can be accessed and displayed using any standard GIS software. It is available in GeoTIFF format and unprojected WGS 84 Datum with a cell size of 0.002277 degrees (approximately 30 meters).
The flow-line model was designed to enable estimation of the age and surface origin for various ice bodies identified within hot-water drilled boreholes on Larsen C Ice Shelf. Surface fluxes are accumulated, converted to thicknesses, and advected down flow from a fixed number of selected points. The model requires input datasets of surface mass balance, surface velocity, vertical strain rates, ice-shelf thickness, and a vertical density profile. This model is part of a larger project....
Isoprene carries approximately half of the flux of non-methane volatile organic carbon emitted to the atmosphere by the biosphere. Accurate representation of its oxidation rate and products is essential for quantifying its influence on the abundance of the hydroxyl radical (OH), nitrogen oxide free radicals (NOx), ozone (O3), and, via the formation of highly oxygenated compounds, aerosol. We present a review of recent laboratory and theoretical studies of the oxidation pathways of isoprene initiated by...
The stochastic dynamic optimization model documented in here simulates decisions of an arable farm with respect to long-term investment based on a compound American option. The implemented application is an investment in short-rotation coppice (SRC). SRC uses fast-growing trees that, once they are set-up, are coppiced several times and finally cleared-up. Time and scale of SRC introduction, intermediate harvest quantities, and final reconversion are flexible and constitute decision variables along with cropping shares for competing...
Models used in 'Free Surface Water Flows - Modeling, Simulation and Control' developed in Matlab/Simulink R2016b.
Source files of models used in ' Free Surface Water Flow - Modeling, Simulation and Control ' developed in Scilab/Xcos v. 5.4.1
The bio-economic model calculates optimal weed control strategies for cultivation of silage maize in North-Rhine-Westphalia and can be used to simulate agri-environmental policy scenarios such as a glyphosate ban. The model is described in detail in the following article: Böcker, T., Britz, W., Finger, R. (2017). Modelling the effects of a glyphosate ban on weed management in silage maize production. Ecological Economic.
3D human model
Groundwater in the Ozark Plateaus aquifer system is an important source for municipal, industrial, agricultural, and domestic water supply needs across much of southern Missouri and northern Arkansas, and smaller areas of southeastern Kansas and northeastern Oklahoma. Recent short-term drought conditions have emphasized the need to better understand the delicate balance between abundance, sustainability and scarcity. A groundwater flow model has been developed as the primary tool for the assessment of groundwater availability in the...
Model of the preterm eye between 28 and 52 weeks post-menstrual age. To generate models for ages within the aforementioned range execute the script contained in 'Preterm_eye.zpl' from 'Neonatal_Eye_Retinal Image_all_ages_GRIN_1.2_start__pos.zmx' in Zemax OpticStudio. To re-run the simulation that arrived at this model execute the script contained in 'Preterm_eye_lens_dims_sim.zpl' from 'Neonatal_Eye_Retinal Image_all_ages_GRIN_1.2_start__pos.zmx' using the merit function contained in 'Preterm_RE_Final.MF'. The model makes use of the code for the age-dependent model of the crystalline lens contained in...
MODFLOW model used to simulate multiple-well aquifer tests and characterize hydraulic properties of volcanic rocks in Pahute MesaGarcia, C. Amanda; Jackson, Tracie R.; Halford, Keith J. & Tracie Jackson
An improved understanding of groundwater flow and radionuclide migration downgradient from underground nuclear-testing areas at Pahute Mesa, Nevada National Security Site, requires accurate subsurface hydraulic characterization. To improve conceptual models of flow and transport in the complex hydrogeologic system beneath Pahute Mesa, the U.S. Geological Survey characterized bulk hydraulic properties of volcanic rocks using an integrated analysis of 16 multiple-well aquifer tests. Single-well aquifer-test analyses provided transmissivity estimates at pumped wells. Transmissivity estimates ranged from...
USGS DOI Tool Production Environment33
Incorporated Research Institutions for Seismology13
ETH Zürich Research Collection4
Natural Environment Research Council2
Institut National de Recherche Agronomique2
University of Strathclyde1
CSC - IT Center for Science1
IIASA - International Institute for Applied Systems Analysis1
Museum für Naturkunde - Leibniz-Institut für Evolutions- und Biodiversitätsforschung1