Stamatina Isari

Stamatina Isari
Institute of Marine Research in Norway | IMR

Research Scientist in the Plankton Group, Institute of Marine Research (Bergen, Norway)

About

49
Publications
8,523
Reads
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846
Citations
Citations since 2016
19 Research Items
574 Citations
2016201720182019202020212022020406080
2016201720182019202020212022020406080
2016201720182019202020212022020406080
2016201720182019202020212022020406080
Additional affiliations
February 2014 - present
Hellenic Centre for Marine Research
Position
  • PostDoc Position
April 2010 - July 2015
Institut de Ciències del Mar
Position
  • PostDoc Position
Education
January 2005 - January 2008
University of Patras
Field of study
  • Biology

Publications

Publications (49)
Chapter
Full-text available
The coral reefs of the Red Sea are host to a diverse fish fauna. Ichthyofauna studies began in the Red Sea during expeditions undertaken by some of the earliest European naturalists. In the more than 200 years that have passed, much has been learned about Red Sea fishes. Nonetheless, many knowledge gaps remain. Although it is a relatively young sea...
Article
Full-text available
An important aspect of population dynamics for coral reef fishes is the input of new individuals from the pelagic larval pool. However, the high biodiversity and the difficulty of identifying larvae of closely related species represent obstacles to more fully understanding these populations. In this study, we combined morphology and genetic barcodi...
Data
Abundance of gobiid species in the samples. (PDF)
Data
Primers used for the DNA barcoding. (PDF)
Data
List of non-gobiid taxa identified in the samples. (PDF)
Data
Assignment at the sub-family level by combined DNA barcoding and morphology. (PDF)
Data
Abundance of apogonid species in the samples. (PDF)
Data
Abundance of labrid, pomacentrid and scarid species in the samples. (PDF)
Data
Dates of ichthyoplankton sampling. (PDF)
Data
List of gobiid taxa identified in the samples. (PDF)
Data
Abundance of encountered families in the samples. (PDF)
Article
Full-text available
The temporal and spatial changes of zooplankton and chlorophyll a concentration were studied during the warm stratification period (early June) at three stations whose traits corresponded to the coastal, frontal, and offshore-dome water conditions described for the Catalan Sea. We sampled the stations for 12 days at a frequency ranging from less th...
Article
We studied the horizontal and vertical distributions of marine cladocerans across the Catalan Sea shelf (NW Mediterranean) in July and September 2003, and in June and July 2004. At the seasonal scale, Penilia avirostris appears first in June in the southern region, where temperatures are warmer, and its populations develop northward during the summ...
Article
Full-text available
Mixotrophs combine photosynthesis with phagotrophy to cover their demands in energy and essential nutrients. This gives them a competitive advantage under oligotropihc conditions, where nutrients and bacteria concentrations are low. As the advantage for the mixotroph depends on light, the competition between mixo- and heterotrophic bacterivores sho...
Poster
Full-text available
Annual cycle of larval fish community in the central-north Red Sea: comparing offshore vs. coral reef waters
Article
Rising levels of atmospheric CO2 are responsible for a change in the carbonate chemistry of seawater with associated pH drops (acidification) projected to reach 0.4 units from 1950 to 2100. We investigated possible indirect effects of seawater acidification on the feeding, fecundity, and hatching success of the calanoid copepod Acartia grani, media...
Data
Although copepods have been considered tolerant against the direct influence of the ocean acidification (OA) projected for the end of the century, some recent studies have challenged this view. Here, we have examined the direct impact of short-term exposure to a pCO2/pH level relevant for the year 2100 (pHNBS, control: 8.18, low pH: 7.78), on the p...
Article
Full-text available
Planktonic copepods are a key group in the marine pelagic ecosystem, linking primary production with upper trophic levels. Their abundance and population dynamics are constrained by the life history tradeoffs associated with resource availability, reproduction and predation pressure. The tradeoffs associated with the ageing process and its underlyi...
Article
Full-text available
Although copepods have been considered tolerant against the direct influence of the ocean acidification (OA) projected for the end of the century, some recent studies have challenged this view. Here, we have examined the direct impact of short-term exposure to a pCO2/pH level relevant for the year 2100 (pHNBS, control: 8.18, low pH: 7.78), on the p...
Data
Rising levels of atmospheric CO2 are responsible for a change in the carbonate chemistry of seawater with associated pH drops (acidification) projected to reach 0.4 units from 1950 to 2100. We investigated possible indirect effects of seawater acidification on the feeding, fecundity, and hatching success of the calanoid copepod Acartia grani, media...
Poster
Full-text available
FACT * In oligotrophic seas like the Mediterranean, during the summer stra'fica'on, the ecosystem structure and func'on depend on a deep phytoplankton maximum (DPM) that develops in the layer where light and nutrients are sufficient. (1) * Mechanical energy (turbulence) returns water rich in nutrients to illuminated layers. But strong density gradi...
Article
We studied the feeding behavior of the nauplii and adult females of the marine cyclopoid copepod Oithona davisae in the laboratory. Functional response experiments showed that O. davisae can feed on a broad size range of prey but that high clearance rates only occur in a narrow prey size range. Neither the nauplii nor the females were able to feed...
Article
Full-text available
Corresponding editor: Roger Harris Light and nutrient availability are assumed to largely control the dynamics and trophic efficiency of marine planktonic food webs, and are expected to be influenced by climate change (i.e. changes in stratification due to global warming). During an 8-day mesocosm experiment, we investigated the propagation of ligh...
Article
Here, our goal was to develop a technique for staining live algae with vital fluorochromes and to further test whether this method may serve as a tool for examining the trophic roles and functional diversity of microzooplankton. We tested 4 fluorochromes on a total of 10 phytoplankton species, out of which only 3 proved effective, and only on some...
Data
Phytoplankton composition in the beginning and the end of the experiment with each taxonomic group presented in μg C L−1. Note the different scale of the y axis between sampling dates
Data
The physical environment in the mesocosms during the experiment, if not otherwise indicate lines indicate the average value over the water column and grey areas indicate confidence limits. O2 concentration measured in µM, PAR in µmol s−1W−1
Article
Full-text available
Reproduction in planktonic animals depends on numerous biotic and abiotic factors. One of them is predation pressure, which can have both direct consumptive effects on population density and sex ratio, and non-consumptive effects, for example on mating and migration behaviour. In copepods, predator vulnerability depends on their sex, motility patte...
Article
Full-text available
We studied the effects of future climate change scenarios on plankton communities of a Norwegian fjord using a mesocosm approach. After the spring bloom, natural plankton were enclosed and treated in duplicates with inorganic nutrients elevated to pre-bloom conditions (N, P, Si; eutrophication), lowering of 0.4 pH units (acidification), and rising...
Article
Full-text available
Anchovies and sardines hold a very important position in pelagic ecosystems and are usually found in species pairs, exhibiting fluctuations in abundance. In upwelling systems, alternations in small pelagic fish have been hypothesized to be, at least partly, trophically mediated. In non-upwelling areas, direct comparisons of sardine and anchovy trop...
Article
Full-text available
Copepods have been considered capable of selective feeding based on several factors (i.e., prey size, toxicity, and motility). However, their selective feeding behaviour as a function of food quality remains poorly understood, despite the potential impact of such a process on copepod fitness and trophodynamics. In this study, we aimed to evaluate t...
Article
Full-text available
Marine planktonic organisms endure fluctuations in food abundance and quality during their life. The degree of resource variability in each specific environment may have forced adaptive survival responses on the organisms inhabiting them. We studied the adaptations to feast and famine of 2 strains of the heterotrophic dinoflagellates Gyrodinium dom...
Article
Plankton biomass and composition in the pelagic zone of oceans is exposed to changes in availability of light and nutrients due to large-scale ocean circulation and water column stratification. We hypothesized that displacement of plankton from surface to deeper darker waters would not only favor heterotrophy over time, as previously suggested, but...
Article
Full-text available
The diet of sardines was analyzed from samples collected at a coastal site in the North Aegean Sea (eastern Mediterranean) in July 2007 and July 2008 (stratification periods), and in December 2007 (early phase of the mixing period) and February 2009 (late phase of the mixing period). Concurrent measurements of environmental and planktonic community...
Article
Full-text available
Patterns in the mesoscale distribution of larval fish in the coastal waters of central Greece, an area of high topographic and bathymetric complexity, were analysed using samples collected during two ichthyoplankton surveys in July 1998 and June 1999. Salinities were lower in the eastern (Aegean) part of the study area due to the influence of water...
Article
Full-text available
Clausocalanus is a small-sized copepod genus that is widespread in the world ocean, but it has been poorly investigated from a biological and ecophysiological point of view. In this study, we targeted the species Clausocalanus lividus, one of the less studied circumglobally occurring congeners of the genus, to explore a number of aspects of its fee...
Poster
Full-text available
Feeding performance of the copepod Clausocalanus lividus (Frost and Fleminger, 1968)
Article
Full-text available
The north-eastern Aegean Sea (NEA) is a marine system of high hydrological complexity, principally induced by the inflow and subsequent advection of the low salinity (<30) Black Sea water (BSW). This water mass occupies the upper layer (~0–20 m) of the NEA and plays a key role in the determination of circulation patterns and the generation of vario...
Conference Paper
Full-text available
The patterns of the vertical distribution of mesozooplankton in relation to physical and biological heterogeneities were studied in a 5-day time series at a fixed station in the Catalan Sea (NW Mediterranean). CTD, microturbulence, and TAPS® (high-resolution acoustic probe) profiles, and depth-stratified LHPR® hauls from 15 depth-strata (from 0 to...
Article
Larval fish community structure was studied in the northeastern Aegean Sea (NEA) over an area influenced by the advection of Black Sea water (BSW). Sampling was carried out in early summer during a period of 4years (2003–2006). Taxonomic composition and abundance presented high variability in space that remained relatively constant among years. Tow...
Article
Full-text available
Mesozooplankton group composition was examined in the Northeastern Aegean Sea (NEA) over a grid of 30 stations sampled during July 2004. The surface water layer influenced by the low salinity Black Sea waters (BSW) is considered in this paper. We attempted to study horizontal distribution patterns of major mesozooplankters within a more comprehensi...
Article
Full-text available
Depth-stratified samples, collected during a period where the water column was vertically mixed (March 2000) and a period of thermal stratification (September 2000), were analyzed in order to investigate the horizontal and vertical distribution patterns and composition of mesozooplankton, especially copepod species assemblages, in a pelagic (Ionian...
Article
Full-text available
The Northeastern Aegean Sea (NEA) is the area where Black Sea waters (BSW) outflow in the Mediterranean enhancing local productivity and inducing high hydrographic complexity. We describe the structure and distribution (both vertical and horizontal) of mesozooplankton assemblages in the NEA during the thermal stratification period in July and Septe...

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