This section describes the recommended protocol from design of the project with respect to collecting vouchers through to incorporation of vouchers into museum collections.
This stage involves determining what specimens are to be collected, how they are to be prepared and the cost. The following are recommended:
If vouchers need be collected, the type of voucher to collect and the number of vouchers to be collected, depend on many things. If whole specimen vouchers are to be collected, one must consider 1) the efficiency that one can catch/collect the species and prepare them; 2) feasibility of taxonomic identification with regard to available exports and published keys; 3) if the taxonomic group to be collected can act as an indicator that can be related to management; and 4) if the collections can be made available in a reasonable length of time to create useful data (body of knowledge).
For some species, vouchers are not required as field data by qualified observers is accepted. This data may include direct observations of the species or its sign. Depending on the species, using animal sign can be easier to sample than it is to sample the animal directly, and equally as reliable. For other species photographs, scats, pellets, sound recordings, etc. are routinely accepted as vouchers that adequately document occurrence. Still, in some situations a whole voucher specimen is required either for identification purposes or to complete a reference collection. When whole specimens are required it is expected that common sense will be used. For example, whenever possible trap mortalities should be used as wildlife specimens rather than killing another animal.
Collection of rare species may endanger the population - do not collect if this situation is likely. Do not collect more specimens than can be reasonably handled. To document the presence of a species, it is generally accepted that one specimen of each species is adequate. However, for taxa that are difficult to identify and for small organisms, additional specimens may be needed.
It is impossible to generalize as to how many specimens should be collected. See Voucher Requirements, sections 3.1, 4.1, ...7.1, for detailed recommendations. Inventory personnel must also discuss this issue with museum curators prior to field work.
Photographs taken to provide documentation for species identification should be taken with a macro or close-up lens, and they should show features used for identification and scale of the photo. Photographs should be submitted with the pertinent raw data. It may be necessary to take more than one picture of one specimen from different angles.
Ensure that slides or prints are kept in appropriate protective sleeves. They should be returned to the photographer once species identification has been verified or arrangements made for them to be kept as part of a permanent species record.
After specimens are collected, special care is needed to ensure that they will arrive at the museum in excellent condition. In general, to avoid decomposition, specimens should be prepared as soon as possible after collection, if not already done in the field (see taxon specific sections). Permissible time will vary with temperature and humidity conditions, however do not delay. Specimens that are not killed in the initial collection procedure, must be anaesthetized appropriately (see section 1.1). Methods vary with taxon.
It is important to note that methods may have to be varied to suit taxonomists who will be identifying the specimens. The reference section of this manual includes publications and reports that provide more complete details on collection, preparation and preservation of specimens.
Note: Specimens may not be accepted by the museum if they are not prepared properly (as outlined in relevant protocols).
The value of a voucher specimen relies on and can be greatly enhanced by accurate and detailed data gathered at the time of collection. This section provides general guidelines and recommended data to be recorded along with voucher specimens. See appropriate taxa group for specifics.
Waterproof notebooks and indelible ink pens are recommended for use in the field. Although notebook set up depends on personal preference, legibility and clarity of entries are critical. These must be unambiguous so that other people can read and understand what is written. It is crucial that general data such as habitat, date, and weather be associated with the appropriate specimens. It is recommended that the date and location be written at the top of each page, and when either changes, broad dividing lines be used to distinguish such changes. Avoid abbreviations, if they are used a key must be included in the field notebook or permanently attached to it. Also, if ditto marks are used then the information must be exactly the same.
Field labels should be written on waterproof paper (anonymous (undated) recommends Permafibre) in India ink or pencil. Labels and inks should be tested in water and the fixing/storage chemicals prior to going into the field. For specimens that are housed in jars or other containers, the labels should be placed inside, not on the outside. For specimens that can have labels attached directly to them, be sure that the labels are securely fastened.
Voucher data must be recorded in the field (preferably in a waterproof surveyors notebook). The order of notebook entries should approximate the label format being used for ease in label preparation and duplications, especially when label preparation will be done by someone other than the collector.
The absolute minimum voucher data that must be included is the field collection number, the date and a detailed location. Without these, specimens are virtually useless.
Note: Specimens may not be accepted by the museum if they are not labelled properly. Specimens without the associated minimum data required can make a valuable voucher virtually useless.
Specimens will need to be identified and all data verified. A useful reference for species identification experts is Directory of Experts in the Identification of BC Species, compiled by H. Nadel (1996). This technical working paper (WP19) can be viewed online at: http://www.for.gov.bc.ca/hfd/pubs/docs/wp/wp19.htm or it can be ordered through Queen's Printers of Victoria (stock number: 7655000058) via their internet homepage: http://http://www.publications.gov.bc.ca/ by searching under the Ministry of Forests.