Georgios Chatzigeorgiou

Georgios Chatzigeorgiou
Hellenic Centre for Marine Research | hcmr · Institute of Marine Biology, Biotechnology and Aquaculture

PhD

About

130
Publications
25,134
Reads
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525
Citations
Additional affiliations
October 2010 - present
Hellenic Centre for Marine Research
Position
  • PostDoc Position
August 2004 - September 2008
University of Crete
Position
  • PhD Student

Publications

Publications (130)
Article
Full-text available
The colonization of artificial structures by benthic organisms in the marine realm is known to be affected by the general trophic patterns of the biogeographical zone and the prevailing environmental traits at the local scale. The present work aims to present quantitative data on the early settlement progress of macrofaunal benthic assemblages deve...
Article
Full-text available
The Mediterranean stony coral Cladocora caespitosa (Linnaeus, 1767) is a well-known habitat builder, and as such hosts a diversified faunal assemblage. Although polychaetes are one of the most abundant and diverse macrobenthic groups associated with C. caespitosa colonies, our knowledge of their ecological features in this association is still limi...
Article
Full-text available
Several imaging techniques are used in biological and biomedical studies. Micro-computed tomography (micro-CT) is a non-destructive imaging technique that allows the rapid digiti-sation of internal and external structures of a sample in three dimensions and with great resolution. In this review, the strengths and weaknesses of some common imaging t...
Article
Full-text available
Habitat mapping is nеcessary for the efficient conservation and protection of marine ecosystems. In addition, it is a requirement for EU Member States as stated in the European Union (EU) Habitats Directive (92/43/EEC), as well as necessary for the achievement and maintenance of 'good environmental status (GES)' of benthic marine habitats in the fr...
Preprint
Full-text available
Habitat mapping is nеcessary for the efficient conservation and protection of marine ecosystems. In addition, it is a requirement for EU Member States as stated in the European Union (EU) Habitats Directive (92/43/EEC), as well as necessary for the achievement and maintenance of 'good environmental status (GES)' of benthic marine habitats in the fr...
Poster
Full-text available
The fan mussel Pinna nobilis Linnaeus, 1758 is an endemic species of the Mediterranean Sea included in the list of protected species (Annex IV of the Habitat Directive and Annex II of the Barcelona Convention) and recently characterized “Critically Endangered” by the IUCN, due to Mass Mortality Events. In this context, the assessment of the genetic...
Article
Full-text available
Marine hard-bottom communities are undergoing severe change under the influenceof multiple drivers, notably climate change, extraction ofnatural resources, pollutionand eutrophication, habitat degradation, and invasive species. Monitoring marinebiodiversity in such habitats is, however, challenging as it typically involves expensive,non-standardize...
Article
Full-text available
Marine hard-bottom communities are undergoing severe change under the influence of multiple drivers, notably climate change, extraction of natural resources, pollution and eutrophication, habitat degradation, and invasive species. Monitoring marine biodiversity in such habitats is, however, challenging as it typically involves expensive, non-standa...
Article
Full-text available
Marine hard-bottom communities are undergoing severe change under the influence of multiple drivers, notably climate change, extraction of natural resources, pollution and eutrophication, habitat degradation, and invasive species. Monitoring marine biodiversity in such habitats is, however, challenging as it typically involves expensive, non-standa...
Article
Full-text available
Good datasets of geo-referenced records of alien species are a prerequisite for assessing the spatio-temporal dynamics of biological invasions, their invasive potential, and the magnitude of their impacts. However, with the exception of first records on a country level or wider regions, observations of species presence tend to remain unpublished, b...
Conference Paper
Full-text available
Marine caves constitute unique biodiversity reservoirs of high conservation value. Nevertheless, marine caves of the Aegean Sea have been studied less intensively than those in other Mediterranean regions. In this study, benthic biodiversity and physicochemical parameters were investigated for the first time in the Elephant Cave of Crete (Greece),...
Article
Full-text available
Research Infrastructures (RIs) are facilities, resources and services used by scientists to perform research and support innovation. A number of EU research infrastructures [e.g. e-Science and Technology European Infrastructure for Biodiversity and Ecosystem Research (LifeWatch) European Research Iinfrastructures Consortium (ERIC); The European lif...
Conference Paper
Full-text available
The Underwater Biotechnological Park of Crete (UBPC) is an applied research infrastructure established in 2015 at the island of Crete (Aegean Sea, Eastern Mediterranean), occupying a seafloor area of 2.5 hectares at depths between 18 and 22 m. Its main objectives are: (a) the continuous monitoring of coastal environmental parameters; (b) the experi...
Conference Paper
Full-text available
Two decades ago, a unique marine cave was discovered in Crete (Greece, Eastern Mediterranean). The so-called Elephant Cave was very soon meant to become one of the most iconic diving destinations in the island. It stands out for its aesthetic value with a variety of speleoforms and the remaining fossil bones of deers and a dwarf elephant which are...
Article
Full-text available
The NaGISA project (Natural Geography Ιn Shore Areas) is a global initiative within the framework of the Census of Marine Life. The Mediterranean Sea has joined with 4 stations, 2 in Italy and 2 on the island of Crete, Greece. Two different sites were sampled during two consecutive years (2007 and 2008) by means of SCUBA diving. On the basis of the...
Presentation
Full-text available
The marine fish aquaculture keeps growing in the Mediterranean Sea, and its expansion is related to increasing loads of nutrients been released to the environment. That has been often associated with deteriorating environmental conditions of the surrounding habitats. However, the studies addressing this have been usually directed to the benthonic h...
Article
Subtidal hard bottoms are of particular scientific and economic value as they are highly productive systems. They are less well studied compared with soft bottoms, as they often require manual sample collection via scuba diving. Although a multitude of sampling devices is available for soft bottoms, only a few are suitable for hard substrates, and...
Preprint
Full-text available
Research Infrastructures (RIs) are facilities, resources and services used by the scientific community to conduct research and foster innovation. LifeWatch ERIC has developed various virtual research environments, which include many virtual laboratories (vLabs) offering high computational capacity and comprehensive collaborative platforms that supp...
Preprint
Full-text available
Research Infrastructures (RIs) are facilities, resources and services used by the scientific community to conduct research and foster innovation. LifeWatch ERIC has developed various virtual research environments, which include many virtual laboratories (vLabs) offering high computational capacity and comprehensive collaborative platforms that supp...
Poster
Full-text available
Artificial reefs (ARs) are submerged man-made constructions aiming to enrich the marine life of a given area providing shelter and facilitating the attraction and concentration of several taxa (Klaoudatos et al. 2012). The functional and morphological characteristics of the innovative ARs deployed by the Hellenic Centre for Marine Research (HCMR) i...
Poster
Full-text available
Introduction/Aim: Within the last decades several Artificial Reefs (ARs) have been deployed in the European seas as a measure for the enhancement of fish stocks and to a lesser extent for the protection and enhancement of seabed habitats (Fabi et al. 2011). The “HCMR Recreational Diving OasisTM” constitutes an innovative concept based on the constr...
Preprint
Full-text available
Research Infrastructures (RIs) are facilities, resources and services used by the scientific community to conduct research and foster innovation. LifeWatch ERIC has developed various virtual research environments, which include many virtual laboratories (vLabs) offering high computational capacity and comprehensive collaborative platforms that supp...
Article
Full-text available
Background: The last annotated checklist of marine polychaetes in Greece was published in 2001. Since then, global taxonomic progress, combined with many new species records for Greece, required a thorough review of the taxonomic, nomenclatural and biogeographic status of the national species list. This checklist revises the status of all extant p...
Article
Full-text available
The Mediterranean Sea is home to over 2/3 of the world's charter boat traffic and hosts an estimated 1.5 million recreational boats. Studies elsewhere have demonstrated marinas as important hubs for the stepping-stone transfer of non-indigenous species (NIS), but these unique anthropogenic, and typically artificial habitats have largely gone overlo...
Data
Supplementary Data: Key Taxonomic Characters used for identification and Table with the number of visiting vessels per annum per marina.
Article
The aim of this study was to attempt to fill current knowledge gaps on midlittoral Mediterranean biodiversity at local and regional scales, by using benthic polychaetes as a model taxon. Two different data sets were analysed: (i) a quantitative data set from the two Natural Geography in Shore Areas (NaGISA) study sites in Crete and (ii) a qualitati...
Article
Full-text available
Background Citizen Science (CS) as a term implies a great deal of approaches and scopes involving many different fields of science. The number of the relevant projects globally has been increased significantly in the recent years. Large scale ecological questions can be answered only through extended observation networks and CS projects can support...
Article
Full-text available
Background Coastal lagoons are ecosystems of major importance as they host a number of species tolerant to disturbances and they are highly productive. Therefore, these ecosystems should be protected to ensure stability and resilience. The lagoons of Amvrakikos Gulf form one of the most important lagoonal complexes in Greece. The optimal ecological...
Article
Full-text available
Background This paper describes two datasets on the molluscan fauna from the Mediterranean infralittoral reef ecosystem - the biocoenosis of photophilic algae. The first dataset is taken from the East Mediterranean node of the NAGISA project. The second one is a compilation based on the available published material in peer - reviewed journals as wel...
Conference Paper
Full-text available
Underwater rocky formations in the midlittoral and sublittoral zones of the Mediterranean coastline form part of the " Reefs " habitat type (code 1170) under the Natura 2000 Network. The aim of this study was to evaluate the ecological status of the shallower limits of this habitat type in the National Marine Park of Zakynthos (Ionian Sea, Greece)...
Conference Paper
Full-text available
Hard-bottom habitats in the Eastern Mediterranean basin are understudied compared with those from the Western or with those of soft bottom. Funding limitations in research impose the need for the testing of the taxonomic sufficiency hypothesis. This hypothesis suggests that certain taxonomic groups, perhaps the most dominant, can be used as proxies...
Poster
Full-text available
En Mer Méditerranée, le coralligène et les herbiers de Posidonies, qui sont de loin les plus étudiés, sont les habitats les plus importants du point de vue biodiversité côtière. Ils sont le milieu principal produisant complexité structurelle et biodiversité. Les récifs coralligènes produisent des biens (ressources alimentaires et matière première,...
Poster
Full-text available
The coralligenous is a typical Mediterranean marine habitat and hosts the highest concentration of biodiversity of this sea. Paradoxically, unlike Posidonia meadows, it is poorly studied. Like the famous tropical coral reefs, it is a complex biogenic habitat, based on encrusting red algae (numerous metazoan phyla also participate to bio-constructio...
Article
Full-text available
Species and genetic diversity are often found to co-vary since they are influenced by external factors in similar ways. In this paper, we analyse the genetic differences of the abundant polychaete Hermodice carunculata (Pallas, 1776) during two successive years at two locations in northern Crete (Aegean Sea) and compare them to other populations in...
Article
Full-text available
The loss of species is known to have negative impacts on the integrity of ecosystems, but the details of this relationship are still far from being fully understood. This study investigates how the distribution patterns of polychaete species and their associated biological traits patterns in six Mediterranean coastal lagoons change under computatio...
Data
Full-text available
The study of ecosystem functioning – the role which organisms play in an ecosystem – is becoming increasingly important in marine ecological research. The functional structure of a community can be represented by a set of functional traits assigned to behavioural, reproductive and morphological characteristics. The collection of these traits from t...
Poster
Full-text available
The Mediterranean Sea is hosting almost 10% of the total marine biodiversity in spite of representing less than 1% of the global ocean surface. This regional sea experiences high anthropogenic pressures, such as growing human population density along the coasts, urbanization, (over)harvesting of living and raw resources, extensive maritime traffic,...
Article
Full-text available
This paper describes a dataset of polychaetes (Annelida) from 14 midlittoral rocky shore sampling sites in Greece and Italy (Mediterranean Sea). The dataset combines the outcome of four different projects studying the hard substrate midlittoral zone in the Mediterranean between 1984 and 2009. Samples were collected by scraping and collecting the or...
Data
Authors: Sarah Faulwetter Data type: Microsoft Excel file Number of polychaete records in the Mediterranean in five-year intervals since 1960. Data from the Ocean Biogeographic information system, plus additions from the present dataset. File: oo_4274.xls
Data
Authors: Kleoniki Keklikoglou Data type: Microsoft Excel spreadsheet Summary of the number of species per family. File: oo_4271.xls