Percorrer por autor "Avramidi, E."
A mostrar 1 - 2 de 2
Resultados por página
Opções de ordenação
- eDNA metabarcoding of marine invertebrate communities at RO desalination plant outfalls in CyprusPublication . Grammatiki, K.; Jonge, N. de; Nielsen, J. L.; García-Gomez, S. C.; Avramidi, E.; Lymperaki, Myrsini; Marcou, M.; Ioannou, G.; Papatheodoulou, M.; Dargent, O.; Xevgenos, D.; Hesselsøe, M.; Küpper, F. C.Seawater desalination has become an essential part of the drinking water supply of many arid countries in the world - including Cyprus and the wider Mediterranean - Middle Eastern region. In this study, the microinvertebrate fauna near the outfall sites of 2 seawater desalination plants, Dhekelia and Larnaca, in Cyprus was assessed by microscopy-based classical taxonomy and eDNA metabarcoding. The results show impact of desalination brine discharge on marine benthic communities. The community structure and the impact of abiotic factors was more prominent in the sediments than the water, and the alpha diversity results from metabarcoding were consistent with the results from microscopy but differed taxonomically.
- Environmental impact of brine from desalination plants on marine benthic diatom diversityPublication . Grammatiki, K.; Jonge, N. de; Nielsen, J. L.; Scholz, B.; Avramidi, E.; Lymperaki, Myrsini; Hesselsøe, M.; Xevgenos, Dimitris; Küpper, F. C.Benthic diatoms are sensitive indicators of environmental conditions at the seabed. In this study, benthic diatom communities at two brine outfall sites of reverse osmosis (RO) seawater desalination plants in Larnaca and Dhekelia, Cyprus, were investigated using a classical, microscopy-based approach and environmental DNA metabarcoding. In general, the diversity of diatoms measured by both methods (microscopy and eDNA metabarcoding), increased by distance from the brine discharge. Increased TOC and nutrient enrichment at brine outfalls contributed to decreased diatom diversity at the Larnaca outfalls, but the diatom diversity at Dhekelia was not driven by abiotic factors. The diatom communities at the outfalls were shown to be distinct and showed temporal variation across the sampling seasons with eDNA metabarcoding, but this was the case only for Dhekelia with microscopy. The results highlight the effect of local biogeography and different brine mixing methods on diatom diversity. The results revealed that conventional morphological methods and eDNA metabarcoding rarely leads to similar conclusions. However, the complementary results emphasise that more information can be derived when combining the methods for biodiversity impact assessments.