Drained thermokarst lake basins accumulate significant amounts of soil organic carbon in the form of peat, which is of interest to understanding carbon cycling and climate change feedbacks associated with thermokarst in the Arctic. Remote sensing is a tool useful for understanding temporal and spatial dynamics of drained basins. In this study, we tested the application of high-resolution X-band...

This paper presents initial investigations of a new approach to monitor ecosystem processes in complex terrain on large scales. Metabolic processes in mountainous ecosystems are poorly represented in current ecosystem monitoring campaigns because the methods used for monitoring metabolism at the ecosystem scale (e.g., eddy covariance) require flat study sites. Our goal was to investigate the po...

The open source 30 m Copernicus DEM (COP-DEM) has been used to derive the geo-morphometric and topo-hydrological characteristics of Betwa River Basin. Drainage network with 7th order stream mostly dendritic pattern delineated using Strahler’s method. drainage density, frequency, form factor, length overland flow circulatory ratio basin were computed as 0.38 Km/Km2, 0.08 Km−2, 0.23, 1.31, 0.20, ...

Fractality of drainage basins is shown by their tiling properties with subbasins and interbasin areas. Drainage basin forms projected on the two-dimensional plane have mathematical properties similar to those of one-dimensional quasicrystals. Fractal drainage basins are divided into self-similar subbasins and interbasin areas to the infinitesimal limits of their sizes while one-dimensional quas...

We investigate the evolutionary history of the wide-ranging Nearctic treefrog Hyla arenicolor through the integration of extensive range-wide sampling, phylogenetic analyses of multilocus genetic data, and divergence dating. Previous phylogeographic studies of this frog documented a potential signature of introgressive hybridization from an ecologically and morphologically divergent sister spec...

A number of studies have mapped sediment yield at global or regional scales using sediment load measurements from rivers. However, the suitability of the limited mapping methods has not been fully addressed, particularly for large river basins where the sediment load data were obtained from a hierarchical river network. This study examines some of the issues related to the mapping approaches us...

The Midwestern United States is dominated by agricultural production with high concentrations of swine, leading to application of swine manure onto lands with artificial subsurface drainage. Previous reports have indicated elevated levels of antibiotic resistance genes (ARGs) in surface water and groundwater around confined animal feeding operations which administer antimicrobials. While previo...