Determination of stomatic density, index, and area as exposition biomarkers of pollution in Deschampsia antárctica Desv. (Poaceae)
Abstract: Until not so long ago, Antarctica was considered to be a polar region practically pristine. The Antarctic Peninsula has the highest concentration of scientific stations from different countries. Anthropogenic activity has caused alterations in the Antarctic ecosystems directly affecting...
Guardado en:
| Autores principales: | , |
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| Formato: | Artículo |
| Lenguaje: | Español |
| Publicado: |
Springer
2023
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| Acceso en línea: | https://repositorio.uca.edu.ar/handle/123456789/16804 |
| Aporte de: |
| Sumario: | Abstract: Until not so long ago, Antarctica was considered to be a polar region practically pristine. The Antarctic Peninsula has the
highest concentration of scientific stations from different countries. Anthropogenic activity has caused alterations in the
Antarctic ecosystems directly affecting terrestrial vegetation. This fact requires the finding of biomarkers in native plants to
estimate the effects of human impact. Deschampsia antarctica Desv. (Poaceae) is the unique native grass described so far for
Antarctica and was used for multiple investigations. In this study, plants were collected on Carlini scientific station, 25 de
Mayo (King George) Island, Potter Peninsula, South Shetland Islands. Thus, the main objective planned consists of the
evaluation of leaf stomata-related parameters as pollution biomarkers. The results of the stomatic index (SI), density (SD), and area (SA) were shown at sites with different levels of human impact (close and far away from the scientific station). It was found that the correlation between SD and SI, on the adaxial side of the leaves, resulted in a good biomarker for estimating the degree of anthropogenic impact in each studied area. |
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