11/19/2023 0 Comments Taxonomic keysThe key is displayed in a table with couplets represented by rows. The identification is finished when the chosen couplet is associated with an endpoint. If a chosen lead is associated with a pointer then the user goes to the couplet with number indicated by the pointer. At each step a user reads both leads of a couplet and chooses one of them which better fits the identified individual. Identification based on dichotomous key starts at couplet number one and it is stepwise. In a dichotomous key all couplets, except the first, should be addressed by at least one pointer in other couplet, which is indicated by the "number of the previous couplet" The couplet number uniquely identifies couplet and it can be used as its address. In front of each couplet there is a couplet label consisting of couplet number followed by number of the previous couplet in parentheses. Pointers are numbers indicating the next couplet and endpoints are taxonomic names obtained at the end of identification process. The two types of reference are called here "pointer" and "endpoint", respectively. ![]() At the end of each lead there is a reference, which can be either a number pointing to other couplet or a text indicating a name of a species or other taxonomic group. ![]() Each couplet consist of two parts called leads. The key needs to be created by the user.ĭichotomous taxonomic key consists of a series of consecutively numbered couplets. DKey is a free alternative to Lucid Phoenix.ĭKey does not generate the key automatically using data matrix. ![]() It can be used by taxonomic experts to create keys or by users of printed keys to make them more user friendly. DKey software is an editor of dichotomous taxonomic keys.
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