Dedicated to the conservation of the herpetofauna.

The Mission of Partners in Amphibian and Reptile Conservation:

"To conserve amphibians, reptiles and their habitats as integral parts of our ecosystem and culture through proactive and coordinated public-private partnerships.”

Bd Mapping Project -- 2007 update


Bd Mapping Project -- 2007 update

Bd = Batrachochytrium dendrobatidis, Amphibian Chytrid Fungus


16 April 2007

Summary: Bd detections and sampling locations with no detection are being mapped for reporting at the Fall 2007 Bd conference at Arizona State University. This summary covers data being collected and expected uses of the data. Please contact Dede Olson, Bd Mapping Project coordinator, or your regional contact person, for further information about the Bd mapping project (This email address is being protected from spambots. You need JavaScript enabled to view it.). Please contact Robert Bakal for more information about the Bd conference (This email address is being protected from spambots. You need JavaScript enabled to view it.).


Data will be compiled globally, as possible, with the assistance of regional data coordinators. For the Bd conference, locations will be mapped at a fairly coarse resolution for display of global patterns and patterns within selected regions with greater knowledge. Maps will be shown at the conference in presentations and/or posters, and may be published in the conference Proceedings or in an article for a journal issue of key papers from the conference. After the conference, data may reside with regional coordinators, or other agencies and institutions for continued updates (e.g., ASG/DAPTF, PARC). The maps may be displayed on the web, either as a result of the conference or in association with these groups.


What data are being collected? For the mapping project, streamlined data on Bd survey location and amphibian species will be compiled (see Table below). Given the scale of anticipated maps, location precision is not a big issue, however, for regional monitoring Bd over the longer term, precision can be important. If possible, locations should be reported in Latitude/Longitude coordinates at the finest scale possible. Some records may be “dots on a map” and these can be converted to approximate locations for our use, and noted. Most Bd records also will have amphibian species, whether or not the animal was dead or alive, and detection method (histology or pcr). Method is of interest because there may be associated detection rates. For longer term monitoring purposes, known locations and species that tested negative for Bd are also being collected at this time.



1. Release of Bd data for our effort. Individual researchers or sponsoring agencies may be reluctant to release unpublished data, or data with sensitive location information. While display of our coarse-scale maps summarizing Bd detections and no-detections should not be an issue with site confidentiality, or publishing of specific research findings in scientific journals, this concern may need to be resolved by regional coordinators on a case-by-case basis. At least one journal has told a paper author that the inclusion of their Bd data locations in a regional web-based map would not be considered double publishing. It may be important to keep the data compilation “live” over time in order to bring data into the project as they are available and released. A related issue is that some study collaborators are eager to release site location data without the knowledge or consent of their partners. As regional coordinators seek data, it is important that they ask about partners and try to get communication between those collaborators when their data are being considered.

2. Data quality assurance. Regional data coordinators may conduct some data quality control. If data are submitted but not mapped, the justification needs to be noted. For example, duplicate records are a common occurrence during this type of data compilation; this may occur when different partners submit the same location but with slightly different location coordinates because they have identified the “site” differently.

3. Spatial resolution of a “site.” A site may be an individual frog, an inlet at a large wetland, a large wetland, a town, or a national park. While records will be collected at whatever scale they are provided, the finer spatial scales are preferred for later uses.

4. Extent of Bd at a site. This coarse-scale mapping effort does not reflect the scope of Bd occurrence at a site. However, “Notes” can include how many animals per species or life stage tested positively or negatively, for later use. It can also be noted where voucher specimens are retained.

5. Captive populations. This mapping effort is to show the extent of Bd. While most records are expected to be from wild animals, Bd in captive animals can be included and clarified in the “Notes” column.

5. Additional data. We have streamlined this current effort to facilitate the collection of Bd survey locations. Optional additional data may be collected in the “Notes” column.


Locations of Amphibian Bd Surveys

Region, Location, Species, Bd Detection: Dead/Live/Other, Bd Not Detected, Method of Detection, Data Source, Date, Notes.

Region = Country, and region of country (provide codes if abbreviations used)

Location = Latitude/Longitude; regional coordinator can assign, if needed

Species = Amphibian species tested; life stage and sample size can be noted

Bd Detection = Positive Bd test result

Dead Animal = Positive Bd from an animal that was dead, or clearly ill and noted

Live Animal = Animal not known to die, and with no signs of being ill

Other = Bd detected in another way (e.g., from water sample), and noted

Bd Not Detected = Negative Bd test result, can include note about it being a live or dead animal or water sample

Method = Analytical method to test for Bd, histology or pcr, lab doing test can be noted

Source = Name and email address of Principal Investigator or person knowledgeable about survey, to be used as a contact

Date = Date of data compilation, date of detection can be noted

Notes = Any comments about the data or study

**Regional coordinators may opt to add data fields for their own use**



Who is PARC?

Our membership comes from all walks of life and includes individuals from state and federal agencies, conservation organizations, museums, pet trade industry, nature centers, zoos, energy industry, universities, herpetological organizations, research laboratories, forest industries, and environmental consultants.