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Details van artikel 5 van 14 gevonden artikelen
| Titel: |
Identifying tropical trees using comparisons with single specimens of species |
| Auteur: |
Peter Hargreaves Eduardo van den Berg Douglas Antonio de Carvalho Ary Teixeira de Oliveira-Filho |
| Verschenen in: |
Cerne |
| Paginering: | Jaargang 15 (2009) nr. 1 pagina's 41-48 |
| Jaar: |
2009 |
| Inhoud: |
A taxonomic database system CARipé with integrated links to plant images was constructed to characterize the 800forest tree species recorded for the catchments of the Rio Grande in the south of Minas Gerais state in Brazil using vegetativemorphology. After a description was ready, its integrated system Empar, completed in a few seconds an identification attempt usingautomatic character correlation. Empar proved operationally successful in identification tests of 62 specimens, of as many species,against 554 reference specimens and species from the ESAL Herbarium. Empar employed a similarity coefficient with the option ofa weighting based on character frequency and, in tests, the use of this rarity weighting further improved the performance. Three treegroups based on leaf type and phyllotaxy were analyzed separately. From the start, those with compound leaves received moredescriptors and the result was little difference in identification performance between the tree groups. Indications were that expertsand non-experts performed characterizations for identification purposes almost equally well. The most important result was thatsuccessful identifications were obtained using a reference base of just one specimen description per species. |
| Uitgever: |
Universidade Federal de Lavras - UFLA (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 5 van 14 gevonden artikelen
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