Long-term trends in precipitation and surface water chemistry [1]
Title | Long-term trends in precipitation and surface water chemistry |
Publication Type | Book Chapter |
Year of Publication | 2013 |
Authors | Peters DC [2], Laney C. [3], Lugo AE [4], Collins S.L. [5], Driscoll CT [6], Groffman PM [7], J. Grove M [8], Knapp A.K [9], Kratz T.K [10], Ohman MD [11] |
Book Title | Long-Term Trends in Ecological Systems: A Basis for Understanding Responses to Global Change |
Chapter | 12 |
Pagination | 115-161 |
Publisher | National Technical Information Services |
City | Springfield, Virginia |
Accession Number | JRN52670 |
ARIS Log Number | 256726 |
Keywords | atmospheric chemistry [12], climate change [13], cross-site comparisons [14], disturbance [15], ecological response [16], ecology [17], ecosystem [18], EcoTrends [19], experimental forests [20], global change [21], human demography [22], human population growth [23], Long Term Ecological Research (LTER) [24], long-term datasets [25], precipitation [26], rangeland [27], rangeland research stations [28], surface water chemistry [29] |
Abstract | This chapter shows long-term data and trends in precipitation and surface water chemistry for each site. It contains a brief introduction to the topic, and methods of measurements, selection of variables, and their data source. It consists primarily of a large number of figures showing long-term data for different variables. Volume-weighted concentration (mg/L) and area-based wet deposition (kg/ha) from precipitation, and concentration in surface water (mg/L) of nitrogen (as nitrate and ammonium), sulfur (as sulfate), chloride, and calcium are selected. Two types of graphs are included to show trends in the variables and to provide a sense of change across a range of spatial scales (continent, site) for each variable: maps at continental scale showing either the mean across years or the slope of the regression line (if significant) across time, and site-scale data through time. Nitrate and sulfate deposition are decreasing in many Eastern sites, consistent with efforts to control emissions of acid-causing nitrogen and sulfur from power plants in this part of the country. |
URL | /files/bibliography/13-029-12.pdf [30] |