Morphological and Genetic Variability of Myriophyllum spicatum in Different Shallow Water Bodies of Hungary
| Autor: | Viktor R. Tóth, Szilárd Kovács, Mátyás Présing, Hajnalka Horváth, Gabriella Endre |
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| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
geography geography.geographical_feature_category Ecology Myriophyllum 010604 marine biology & hydrobiology Sediment Wetland Biology biology.organism_classification 010603 evolutionary biology 01 natural sciences Macrophyte Nutrient Aquatic plant Botany Environmental Chemistry Genetic variability Eutrophication General Environmental Science |
| Zdroj: | Wetlands. 37:351-362 |
| ISSN: | 1943-6246 0277-5212 |
| Popis: | Deteriorating environments in shallow waters place significant pressure on aquatic plants. To estimate the morphological and genetic diversity of submerged macrophytes at 5 sites characterized by varying degrees of human impact, Myriophyllum spicatum L. was studied. Sediment nitrogen concentrations were found to be significantly correlated with the morphological properties of M. spicatum: the site with high sediment nitrogen concentration had 5 to 10 times larger, but rather uniform (low morphological variability) plants, while the site with the least nitrogen in the sediment had smaller M. spicatum plants that were 4 times more variable than the larger plants. Nevertheless, genetic variability of the studied plants showed no response to nutrient loading in the shallow lakes. The adverse environmental conditions therefore seem not to have affected the genetic material of the sampled plants, thus the large morphological variability observed in association with the nitrogen poor sites was predominantly a result of plastic reactions of M. spicatum to environmental conditions. |
| Databáze: | OpenAIRE |
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