Parcourir par auteur "Kormas, K. A."
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Different phytoplankton descriptors show asynchronous changes in a shallow urban lake (L. Kastoria, Greece) after sewage diversion
Katsiapi, M.; Moustaka-Gouni, M.; Vardaka, E.; Kormas, K. A. (2013)Phytoplankton long-term changes were examined in a shallow urban lake (L. Kastoria, Greece) after sewage diversion in nine distinct years from 1994-2010. Using different levels of phytoplankton descriptors (diversity, ... -
Diversity and Spatial Distribution of Prokaryotic Communities Along A Sediment Vertical Profile of A Deep-Sea Mud Volcano
Pachiadaki, M. G.; Kallionaki, A.; Dahlmann, A.; De Lange, G. J.; Kormas, K. A. (2011)We investigated the top 30-cm sediment prokaryotic community structure in 5-cm spatial resolution, at an active site of the Amsterdam mud volcano, East Mediterranean Sea, based on the 16S rRNA gene diversity. A total of ... -
Diversity of cyanobacterial phylotypes in a Mediterranean drinking water reservoir (Marathonas, Greece)
Lymperopoulou, D. S.; Kormas, K. A.; Moustaka-Gouni, M.; Karagouni, A. D. (2011)The structure of the cyanobacterial community in a large drinking water reservoir (Marathonas, Greece) was investigated in October 2007 and September 2008. Cyanobacteria-specific primers were used for the PCR amplification ... -
The effect of organic and conventional production methods on sea bream growth, health and body composition: a field experiment
Mente, E.; Stratakos, A.; Boziaris, I. S.; Kormas, K. A.; Karalazos, V.; Karapanagiotidis, I. T.; Catsiki, V. A.; Leondiadis, L. (2012)This study aimed to develop a better understanding of organic sea bream aquaculture production in Greece, in particular its consequences for fish growth, health and body composition, and to propose and update standards for ... -
Environmental variation and macrofauna response in a coastal area influenced by land runoff
Akoumianaki, I.; Papaspyrou, S.; Kormas, K. A.; Nicolaidou, A. (2013)Macrofauna community interactions with environmental variables in the water column (salinity, temperature, turbidity, transparency, suspended particulate matter, particulate organic matter, choloroplastic pigments) and in ... -
Establishment and Succession of an Epibiotic Community on Chromated Copper Arsenate-Treated Wood in Mediterranean Waters
Karayanni, H.; Kormas, K. A.; Cragg, S.; Nicolaidou, A. (2010)Colonization and succession of an epibiotic animal community on chromated copper arsenate (CCA)-treated wood were studied for 18 months in the eastern Mediterranean (Saronikos Gulf, Aegean Sea). Pine wood panels, 200 x 100 ... -
First record of a Trichodesmium erythraeum bloom in the Mediterranean Sea
Spatharis, S.; Skliris, N.; Meziti, A.; Kormas, K. A. (2012)Trichodesmium erythraeum is a species of marine cyanobacteria that forms extensive blooms in tropical and subtropical areas, predominantly in the Indian and Pacific oceans. An extensive bloom of this species, identified ... -
Gut bacteria associated with different diets in reared Nephrops norvegicus
Meziti, A.; Mente, E.; Kormas, K. A. (2012)The impact of different diets on the gut microbiota of reared Nephrops norvegicus was investigated based on bacterial 16S rRNA gene diversity. Specimens were collected from Pagasitikos Gulf (Greece) and kept in experimental ... -
Harmful and parasitic unicellular eukaryotes persist in a shallow lake under reconstruction (L. Karla, Greece)
Nikouli, E.; Kormas, K. A.; Berillis, P.; Karayanni, H.; Moustaka-Gouni, M. (2013)The reconstructed Lake Karla, Greece, has been undergoing its water-filling period since November 2009. In this paper, we aimed at investigating whether the unicellular eukaryotes, including the toxic/parasitic ones, that ... -
Inter-comparison of the potentially active prokaryotic communities in the halocline sediments of Mediterranean deep-sea hypersaline basins
Kormas, K. A.; Pachiadaki, M. G.; Karayanni, H.; Leadbetter, E. R.; Bernhard, J. M.; Edgcomb, V. P. (2015)The sediment microbiota of the Mediterranean deep-sea anoxic hypersaline basins (DHABs) are understudied relative to communities in the brines and halocline waters. In this study, the active fraction of the prokaryotic ... -
Interconnectivity vs. isolation of prokaryotic communities in European deep-sea mud volcanoes
Pachiadaki, M. G.; Kormas, K. A. (2012)By exploiting the available data on 16S rRNA gene sequences - spanning over a sampling period of more than 10 yr - retrieved from sediments of the Haakon Mosby mud volcano (HMMV), Gulf of Cadiz (GoC) and eastern Mediterranean ... -
Interconnectivity vs. isolation of prokaryotic communities in European deep-sea mud volcanoes
Pachiadaki, M. G.; Kormas, K. A. (2013)During the past two decades, European cold seep ecosystems have attracted the scientific interest and to date there are several studies which have investigated the community structure and biodiversity of individual sites. ... -
Interpreting diversity of proteobacteria based on 16S rrna gene copy number
Kormas, K. A. (2011)The application of the 16S rRNA gene diversity analysis has revealed the immense microbial diversity of our planet. At the same time, and after of more than two decades of using this methodology along with several important ... -
Low Bacterial Diversity and High Labile Organic Matter Concentrations in the Sediments of the Medee Deep-Sea Hypersaline Anoxic Basin
Akoumianaki, I.; Nomaki, H.; Pachiadaki, M.; Kormas, K. A.; Kitazato, H.; Tokuyama, H. (2012)Studies in the center and margin of the Medee Basin, a Mediterranean deep-sea hypersaline anoxic basin, and at a reference site during Penelope cruise (2007), revealed the existence of a 7 m-thick halocline, with high ... -
Microbial Food Web Structure and Its Impact on Primary Production in a Meso-Oligotrophic Coastal Area (Pagasitikos Gulf, Aegean Sea)
Kormas, K. A.; Karayanni, H.; Christaki, U.; Giannakourou, A.; Assimakopoulou, G.; Gotsis-Skretas, O. (2014)Seasonal structure and dynamics of the planktonic microbial food web (phytoplankton, bacteria, nanoflagellates and ciliates) were studied in the meso-oligotrophic Pagasitikos Gulf, NW Aegean Sea. Pagasitikos Gulf is exposed ... -
Microbiological changes, shelf life and identification of initial and spoilage microbiota of sea bream fillets stored under various conditions using 16S rRNA gene analysis
Parlapani, F. F.; Kormas, K. A.; Boziaris, I. S. (2015)BACKGROUNDSea bream fillets are one of the most important value-added products of the seafood market. Fresh seafood spoils mainly owing to bacterial action. In this study an exploration of initial and spoilage microbiota ... -
Microscopic eukaryotes living in a dying lake (Lake Koronia, Greece)
Genitsaris, S.; Kormas, K. A.; Moustaka-Gouni, M. (2009)The morphological and phylogenetic diversity of the microscopic eukaryotes of the Lake Koronia water column was investigated during a mass kill of birds and fish in August-September 2004. The dominant morphospecies ... -
Molecular detection of potentially toxic cyanobacteria and their associated bacteria in lake water column and sediment
Kormas, K. A.; Vardaka, E.; Moustaka-Gouni, M.; Kontoyanni, V.; Petridou, E.; Gkelis, S.; Neofitou, C. (2010)We investigated the molecular diversity of cyanobacteria and bacteria during a water bloom in a lake with a long history of toxic cyanobacterial blooms (Lake Kastoria, Greece). We also tested the hypothesis whether ... -
Molecular diversity reveals previously undetected air-dispersed protist colonists in a Mediterranean area
Genitsaris, S.; Kormas, K. A.; Christaki, U.; Monchy, S.; Moustaka-Gouni, M. (2014)The molecular diversity of air-dispersed protists was examined through the 18S rRNA gene clone library construction in air samples and samples from experimental water containers passively collecting air-dispersed microorganisms, ... -
Morphological and molecular analysis of bloom-forming Cyanobacteria in two eutrophic, shallow Mediterranean lakes
Kormas, K. A.; Gkelis, S.; Vardaka, E.; Moustaka-Gouni, M. (2011)We investigated the diversity of Cyanobacteria by microscopic observation and sequencing of cyanobacterial-specific amplified 16S rRNA genes in the water column of two shallow, eutrophic lakes (Doirani and Kastoria, northern ...