Registration and login
No registration or login is needed to access or download data from Murray-Darling Basin Authority . All data, except for data of certain taxa that are sensitive for conservation or biosecurity reasons, is accessible to everyone. We do, however, encourage all users to register, as registration makes some extra features available. You need to be logged in to report an issue with an MDBA record and to sign up for e-mail alerts. Also, MDBA remembers some of your preferences during your session and, if you log in, stores a cookie on your machine, so your session lasts until the cookie expires or is deleted. Registrations for MDBA are no longer vetted. MDBA is part of the Atlas of Living Australia (ALA), so if you already have an ALA user account, you don't need to register separately for MDBA, but can log in using your ALA account details.
There are five main search options for querying MDBA data. The Quick search allows you to quickly perform a search using a single search term. The Advanced search allows you to perform a more structured query using one or more criteria. The Batch name search and Batch catalogue number search allow you to query by multiple taxon names and multiple catalogue numbers respectively. The Shapefile search allows you to query by a polygon defined in a shapefile.
Information on how the different search options work is provided below. See the Data page for descriptions of the data associated with each of the query terms.
The Quick search first attempts to match the search term against a standard list of botanical names and common names. If no matches are found, a match will be attempted against the taxon names provided with the specimen records. If there is still no match, a full text search will be performed against the following fields: Herbarium name, Herbarium code, Catalogue number, Collector, Determiner and Collecting notes.
The Advanced search allows you to perform a structured query using one or more criteria. The data fields you can query on are explained in some detail on the Data page.
The Taxon name search attempts to match the search term against a standard list of botanical names and common names. If no matches are found, a match will be attempted against the taxon names provided with the specimen records (Taxon name (provided)). The taxon name search term can be combined with other search terms in the Advanced search.
Taxon names can be botanical names of any rank, or common names. Common names are not provided with the MDBA data and are not a reliable means of querying MDBA records.
You can enter up to four taxon names in the Advanced search. If you want to query on more than four taxon names at the one time, use the Batch name search; you can then use the facets on the results page to add more search terms to your query.
Full text search
Unlike the other items in the Advanced search tab, Full text search will try to locate the entered string in a number of fields. These include Herbarium name, Herbarium code, Catalogue number, Collector, Determiner and Collecting notes.
The Full text search will match the parts of the search string to entire words, but you can add a wildcard ('*') to the last part of the string to match to the start of words. By default, the Full text search will split the search string into its parts and will match to strings where the matched words are separated from each other by text or are in a different order than the parts of the search string. To avoid this behaviour you can enclose the search string in double quotes. Wildcards in quoted strings will be ignored. Individual words in a search string will be matched to pluralised forms of the word. For example, 'cow' will return records with 'cows' in it.
Batch name search
The Batch name search allows you to perform a query against a list of taxon names. Each taxon name needs to be entered on a separate line in the query box.
The list of names entered in the Batch name search are matched against the unprocessed taxon names provided with the specimen records (Taxon name (provided)). The Taxon name (provided) for infraspecific taxa may include authors after the species name, and may use inconsistent abbreviations for the infraspecific rank ('subsp.', 'ssp.' etc.). Because of this, you will get the most predictable results from a batch name search if you don't include author names or names of infraspecific taxa in your list of taxon names. You can then further refine your results using the facets, or by downloading the data and removing any unwanted records.
Unlike the single taxon name searches, the Batch name search only queries on Taxon name (provided) and will not include synonyms in the results. Therefore, for complete results, all known synonyms need to be included in the batch of names.
Batch catalogue number search
The Batch catalogue number search allows you to perform a query against a list of catalogue numbers. Each catalogue number needs to be entered on a separate line in the query box. Catalogue numbers must be formatted exactly as they are stored in MDBA; see the Data page for a summary of the catalogue number formats used by different herbaria.
The Shapefile search allows you to upload an ESRI shapefile and perform a polygon search. Please note that a search is performed only on the first polygon encountered in the shapefile. You will need a tool like OGR Info to find out which polygon is on top. There is also a good chance that the area of interest consists of more than one polygon in the shapefile. A more comprehensive polygon search can be found in the ALA spatial portal.
In the Quick search and the Taxon name input in the Advanced search, when you start typing, a drop-down list with suggestions for taxon names will appear. These names come from the ALA name list and, although they are only names of plants, fungi and algae, do not necessarily correspond with names in MDBA. The correspondence between names on the ALA name list and names in MDBA will improve when the National Species Lists have been completed.
There are three main options for viewing the results of a query: as a list of records, as a distribution map, and as a series of charts that display certain facets of the results. You can narrow down the results of your initial search by selecting values from the facets in the Refine results menu on the left-hand side of the page, and the results displayed in the records, map and charts tab will be updated accordingly.
The facets in the Refine results menu can be used to apply additional search criteria to your result set. Only the first three values will be listed under each of the facet titles on the Results page, but you can view all values in a pop-up window by clicking on 'choose more'. If there are more than 100 values in the facet, only the first 100 values will initially be loaded, but the next 100 values will load when you scroll to the bottom of the window. By clicking on the column headers you can order the values in a facet alphabetically by value or by decreasing number of records. You can filter by a single value by clicking on that value. You can also use the checkboxes to select up to 15 values and either include only records with the selected values in the results or exclude those records from the results.
All filters that have been used will be listed under Current filters. You can turn individual filters off by clicking on the '[X]' following the filter.
By default, most of the available facets are displayed in the sidebar. You can choose which facets you want to display from the drop-down list under Refine results. Your choice will be remembered during the session.
The Records tab provides a summary of each specimen record. The most recently published (or edited) records will appear at the top of the list (note that these are not necessarily the most recently collected specimens). Clicking on an individual record will open the Record detail page, which provides all available data for that record.
You may download a spreadsheet of the records in your search results, or a species checklist of unique taxon names (Taxon name (processed)) in the results.
The column labels in the CSV export are shared with other ALA applications and are not always the same as elsewhere in MDBA. A table with the column names in the CSV output and their equivalents in MDBA can be found in the Download fields page.
You can use the Alerts function to be notified when new records that match your search criteria are made available in MDBA, or when new user-contributed annotations are made to records in your search results. You need to be logged in to subscribe to e-mail alerts.
You can choose to receive alerts on a monthly, weekly, daily or hourly basis. In addition to alerts that relate to your search, you can choose to receive alerts when new records, annotations or images of any kind are added to the ALA.
You can change the size of the dots by using the Size slider. The dots can be differentially coloured by choosing one of the facets from the Colour by drop-down list. Dots for facet values can be displayed or hidden by using the checkboxes in the Legend in the top righthand corner of the map.
You can click on points on the map to view details of the corresponding specimen record.
You can select one of the following environmental layers from the Environmental layer drop-down list:
- Interim Biogeographic Regionalisation of Australia (IBRA)
- Catchment-scale land use (ALUM secondary class)
- Mean annual relative humidity (%)
- Mean annual rainfall (mm)
- Mean annual maximum temperature (°C)
- Fire frequency - number of fires between 1997 and 2008 for each cell
- States and territories (including coastal waters) - Australian marine maritime boundaries
- Geological age range (million years)
- Surface geology of Australia (1:1,000,000 scale, 2010 edition)
- Aspect (degree)
- Elevation (metres above sea level)
- Vegetation cover, based on integrated vegetation (class)
The legend for the selected environmental layer, if it has one, will appear below the map.
View in Spatial portal
Clicking on the 'View in Spatial Portal' button will open your result set in the ALA Spatial Portal. The Spatial portal has a wide range of tools for performing detailed spatial analysis of your query results (you can also upload your own data set for analysis). A guide for using the spatial analysis tools is available on the ALA website.
You can download a high-resolution map by clicking on the 'Download map' button. In the pop-up window you can select the format, size and resolution of the map; the base layer; and the size, colour and opacity of the map symbols.
The Charts tab displays the query results as a series of charts based on a selection of facets. You can filter your results by clicking on a segment in a pie chart or a bar in a bar graph. Clicking on a segment in the pie chart for Taxon, which is the first chart, will not filter your results, but will return a pie chart for the next lower taxonomic level.
The Record detail page displays comprehensive specimen data for a single record. The content of the different fields is described on the Data page. Date loaded (which appears under the location map) indicates the date the record was provided to the ALA BioCache. Date loaded will change if the specimen record has been edited at the source institution. The Date last processed indicates the date that the record was last changed within the ALA BioCache. This may happen, for instance, when there is a change in the backbone taxonomy or the Sensitive Data Service, or when new environmental layers are loaded, and thus doesn't represent any change to the specimen data held by the source institution.
Note that any common names listed after the taxon name at the top of the page come from the name lists used by ALA and are not provided with the records.
In addition to the specimen data from the herbaria, you can view additional political boundaries and extensive environmental sampling data that relates to the collecting locality.
Data validation issues
When MDBA data is uploaded into the ALA BioCache, a range of quality assurance checks are performed and potential data issues are flagged. A summary of the data issues is listed on the Record detail page under the Data validation issues heading. The Data issues section of the Data page describes the validation issues associated with MDBA data.
Flag an issue
Users can flag potential issues with specimen records by using the Flag an issue feature on the Record detail page. Data issues detected during processing or flagged by users are available as a facet on the Results page, and can be used to narrow down your search results.
Original vs processed
Where the processed information displayed is different from the data supplied with the record, the original data is also displayed:
You can compare all the processed and original data by clicking on the Original vs processed button.