دورية أكاديمية
Disentangling diatom species complexes: does morphometry suffice?
| العنوان: | Disentangling diatom species complexes: does morphometry suffice? |
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| المؤلفون: | Saúl Blanco, María Borrego-Ramos, Adriana Olenici |
| المصدر: | PeerJ, Vol 5, p e4159 (2017) |
| بيانات النشر: | PeerJ Inc., 2017. |
| سنة النشر: | 2017 |
| المجموعة: | LCC:Medicine LCC:Biology (General) |
| مصطلحات موضوعية: | Taxonomy, Biometry, Automated identification, Classification, Multivariate statistics, Medicine, Biology (General), QH301-705.5 |
| الوصف: | Accurate taxonomic resolution in light microscopy analyses of microalgae is essential to achieve high quality, comparable results in both floristic analyses and biomonitoring studies. A number of closely related diatom taxa have been detected to date co-occurring within benthic diatom assemblages, sharing many morphological, morphometrical and ecological characteristics. In this contribution, we analysed the hypothesis that, where a large sample size (number of individuals) is available, common morphometrical parameters (valve length, width and stria density) are sufficient to achieve a correct identification to the species level. We focused on some common diatom taxa belonging to the genus Gomphonema. More than 400 valves and frustules were photographed in valve view and measured using Fiji software. Several statistical tools (mixture and discriminant analysis, k-means clustering, classification trees, etc.) were explored to test whether mere morphometry, independently of other valve features, leads to correct identifications, when compared to identifications made by experts. In view of the results obtained, morphometry-based determination in diatom taxonomy is discouraged. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2167-8359 |
| Relation: | https://peerj.com/articles/4159.pdf; https://peerj.com/articles/4159/; https://doaj.org/toc/2167-8359 |
| DOI: | 10.7717/peerj.4159 |
| URL الوصول: | https://doaj.org/article/7195806b93e84b618273ab09a57a9040 |
| رقم الأكسشن: | edsdoj.7195806b93e84b618273ab09a57a9040 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 21678359 |
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| DOI: | 10.7717/peerj.4159 |