A5019134198- Marine and coastal ecosystems
- Microbial Community Ecology and Physiology
- Marine and environmental studies
- Marine Biology and Ecology Research
- Algal biology and biofuel production
- Wastewater Treatment and Nitrogen Removal
- Atmospheric chemistry and aerosols
- Isotope Analysis in Ecology
- Aquatic and Environmental Studies
- Marine and fisheries research
- Ocean Acidification Effects and Responses
- Marine Ecology and Invasive Species
- Aeolian processes and effects
- Marine Bivalve and Aquaculture Studies
- Water Quality Monitoring and Analysis
- Protist diversity and phylogeny
National and Kapodistrian University of Athens
2024
Hellenic Centre for Marine Research
2017-2023
Directorate-General for Research and Innovation
2023
European Commission
2023
Universitat Politècnica de Catalunya
2023
University of Crete
2017-2021
The ocean plays a central role in modulating the Earth's carbon cycle. Monitoring how cycle is changing fundamental to managing climate change. Satellite remote sensing currently our best tool for viewing surface globally and systematically, at high spatial temporal resolutions, past few decades have seen an exponential growth studies utilising satellite data research. Satellite-based observations must be combined with in-situ models, obtain comprehensive view of pools fluxes. To help...
Rising surface temperatures are projected to cause more frequent and intense droughts in the world's drylands. This can lead land degradation, mobilization of soil particles, an increase dust aerosol emissions from arid semi-arid regions. Dust aerosols a key source bio-essential nutrients, be transported atmosphere over large distances, ultimately deposited onto ocean's surface, alleviating nutrient limitation increasing oceanic primary productivity. Currently, linkages between...
In the oligotrophic, phosphorus (P)-limited Eastern Mediterranean Sea (EMS), grazing on heterotrophic bacteria (HB) by pigmented nanoflagellates (PNF) through mixotrophy is a significant source of bacterial mortality and P-dependent. Heterotrophic (HNF) are also important consumers HB. However, there still no conceptual framework describing flows carbon (C) P EMS microbial food web that takes into account mixotrophic behavior PNF. present modelling study, we explore qualitatively pathways C-...
Abstract. Extracellular release of dissolved organic matter (DOM) by phytoplankton is a significant process that drives the microbial loop, providing energy and nutrients to bacteria. In this paper, dynamic budget model proposed for describing DOM under nitrogen phosphorus limiting conditions. The allows distinction two major mechanisms release; passive diffusion related growth lysis cells active exudation rejection unprocessed substrates due stoichiometric constraints. Model results suggest...
The planktonic food web in the oligotrophic Mediterranean Sea is dominated by small-sized (<20 μm) microbes, with nanoflagellates being major bacterial grazers and main participants nutrient cycling. Phosphate a key P-limited Cretan (NE Mediterranean) P-availability can affect its trophic dynamics. Here, we examined grazing potential of heterotrophic (HF) pigmented (PF) as response mechanism to phosphate amendment. Flagellate effect on bacteria was quantified P-amended nutrient-depleted...
Satellite-derived observations of ocean colour provide continuous data on chlorophyll-a concentration (Chl-a) at global scales but are limited to the ocean’s surface. So far, biogeochemical models have been only means generating vertically resolved Chl-a profiles a regular grid. MULTIOBS is multi-observations oceanographic dataset that provides depth-resolved biological based merged satellite- and Argo-derived in situ hydrological data. This product distributed by European Union’s Copernicus...
S1. Uptake of nitrateThis section gives some background to the approach taken model inhibition nitrate assimilation by ammonium.This processes is modelled on basis synthesizing unit (SU) (Kooijman, 1998(Kooijman, , 2010)).Here we analyze case that substrate B inhibits A. When a molecule A or arrives at SU, it has probability ρ bind SU; this depends state SU.For each there are two binding probabilities;(1) 0 if A, bound, (2) for substrates and respectively, neither bound.Therefore, possible...