- Support Us
- About Us
Mongolia Environmental Database
The Mongolia Environmental Database (EDB) for this project primarily consists of geochemical analyses of water samples collected (a) specifically to correspond to the habitats of collected organisms, as well as (b) generally to characterize the sampled water body. In addition, some surface-sediment samples were collected and characterized simply for major components (organic, inorganic, and carbonate fractions).
The database (EDB) is organized according to the following conventions:
Site: A “site” refers to a hydrologic feature or water body with its own unique set of water sources. Examples of types of sites are lakes, springs, points along a river or stream. A spring seep alongside a lakeshore would be a separate site from the lake, because the source of the water to the spring (groundwater) is different from the sources feeding the lake (runoff, streamflow input, precipitation, and groundwater). In other words, a “site” is any place we sampled where we could expect that the water chemistry might be different from other sites because of having different source waters. Each site is given a unique site number (SITENUM). For very large lakes, sampling locations on different shores were sometimes given their own site number.
Subsite: A “subsite” is a habitat or segment of a site that shares the basic water inputs at the site, but may have a distinctive chemistry because of within-site processes. The epilimnion, hypolimnion, and littoral zones were considered to be subsites of the lake. A splash pool beside a lake was considered to be a subsite, unless the pool appeared to be influenced by groundwater seepage, in which case it was designated as its own site. Sites other than lakes did not have subsites.
Water sample: The water sample is the main entity of this database. Each water sample is given a unique identifier (WID). Samples were collected to be as representative as possible of the habitat for each biotic collection. Consequently, each biotic collection should have an associated WID number corresponding to the most pertinent water sample.
Other data: At some lake sites, water column profiles of field data (temperature, specific conductance, pH, and dissolved oxygen) were measured. For many lakes, surface sediment was collected and characterized for basic components. Identification numbers were assigned to each lake profile (PROFID) and surface-sediment sample (SSID) and related to specific sites via the SITENUM.
Metadata: The first page of each Excel spreadsheet consists of metadata explaining the format and meaning of each of the fields in the accompanying data sheets.
The following data files are available to download in MS Excel (*.xls) format:
Water chemistry files (data for each water sample) (files coming soon)
Data files for selected locations (files coming soon)
The Soyombo symbol
Find out more about the "soyombo" symbol, the national symbol of Mongolia.