Blue Carbon: Methane Emissions from Managed Saline Ponds in the South Bay Salt Pond Restoration Project, San Francisco Bay
Haley J. Miller, Glenn E. Woerndle, Steve Crooks, and Jason K. Keller
This data set reports net methane (CH4) emissions from managed saline ponds and a restored salt marsh associated with the South Bay Salt Ponds Restoration Project, San Francisco Bay, CA, USA. Associated biogeochemical and physical data are also reported. Data were collected on five sampling dates over the course of the study: November 2016, January 2017, March 2017, June 2017 and August 2017. Logistics (e.g., weather and road conditions) and nesting birds did not allow us to sample all locations during all sampling events.
Methane emissions were measured using static chambers and biogeochemical data were measured on porewater associated with the static chambers. Data from one flux chamber (Pond A1; November 2016) were removed as an outlier because the measured emissions were more than 20-times higher than the average of other fluxes in the same pond during the same sampling event.
Walter H. Piper
Data collected since 1993 in Oneida County, Wisconsin, on the breeding and territorial behavior of the common loon, Gavia immer. This study population is marked with USGS metal bands and colored leg bands for individual identification. It includes many individuals banded as chicks, whose life histories are known thoroughly. Data are collected from April through August of most years on this migratory species.
H. Öström, H. Öberg, H. Xin, Jerry L. LaRue, M. Beye, M. Dell'Angela, J. Gladh, M. L. Ng, J. A. Sellberg, S. Kaya, G. Mercurio, D. Nordlund, W. F. Schlotter, A. Föhlisch, M. Wolf, W. Wurth, M. Persson, J. K. Nørskov, F. Abild-Pedersen, H. Ogasawara, L. G. M. Pettersson, and A. Nilsson
Femtosecond x-ray laser pulses are used to probe the CO oxidation reaction on Ru initiated by an optical laser pulse. On a timescale of a few hundred femtoseconds, the optical laser pulse excites motions of CO and O on the surface allowing the reactants to collide and, with a transient close to a picosecond (ps), new electronic states appear in the O K-edge x-ray absorption spectrum. Density functional theory calculations indicate that these result from changes in the adsorption site and bond-formation between CO and O with a distribution of OC—O bond lengths close to the transition state (TS). After 1 ps 10 % of the CO populate the TS region, which is consistent with predictions based on a quantum oscillator model.