Drosos Koutsoubas

Drosos Koutsoubas
University of the Aegean · Department of Marine Sciences

About

188
Publications
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Publications

Publications (188)
Conference Paper
Full-text available
The present pilot study aims at evaluating knowledge, attitudes, and behaviour concerning ocean issues in relation to university students in Greece. A 3-scale questionnaire was developed and administered to 106 students. Results revealed that Marine Sciences students were found to have better knowledge as well as pro-environmental attitudes and beh...
Article
The loss of Mediterranean macroalgal populations dominated by Cystoseira sensu lato is driven by a multitude of pressures. In the eastern Mediterranean Sea, climate change and the establishment of Lessepsian herbivore species have further intensified the ongoing decline of these canopy-forming algae. Knowledge of the reproductive phenology, embryol...
Article
Full-text available
Sea level rise could result in the loss and shrinkage of coastal habitats, jeopardizing the persistence of a number of species that rely upon these highly dynamic and sensitive areas. With reproduction and population recruitment depending exclusively on low-lying sandy beaches, marine turtles are among the organisms for which sea level rise represe...
Article
Full-text available
Research known as Citizen Science (CS) has been recognized as an important tool for both biodiversity restoration and fisheries management projects through active involvement of citizens and therefore for public environmental awareness too. CS projects should be well designed and state clear questions, that will benefit both the research goals and...
Article
Sea turtles are highly mobile species that use oceanic, neritic, and coastal habitats as nursery, foraging, wintering, breeding and migration areas at distant locations throughout their lifetime. Due to their highly migratory nature and large-scale habitat use, they are subjected to multiple threats across marine and coastal ecosystems that can im...
Article
Sea turtles are highly mobile species that use oceanic, neritic, and coastal habitats as nursery, foraging, wintering, breeding and migration areas at distant locations throughout their lifetime. Due to their highly migratory nature and large-scale habitat use, they are subjected to multiple threats across marine and coastal ecosystems that can imp...
Conference Paper
Full-text available
Even before the introduction of the term "Marine Heat Wave" (MHW) and its statistical definition in global-scale studies, the scientific community had studied and recorded potentially harmful impacts of persistent conditions of warm surface layers and highly stratified water columns on the marine ecosystem. The main triggers for MHWs are yet not we...
Article
Full-text available
Data with high spatial resolution on the structure and diversity of marine assemblages are valuable for fisheries management and conservation planning but are seldom available. This study provides fisheries-independent, baseline information on the structure and diversity of the demersal fish assemblages of the continental shelf and upper slope off...
Article
Full-text available
Understanding the interactions among invasive species, native species and marine protected areas (MPAs), and the long-term regime shifts in MPAs is receiving increased attention, since biological invasions can alter the structure and functioning of the protected ecosystems and challenge conservation efforts. Here we found evidence of marked modific...
Article
Full-text available
This study investigates the trophic diversity of fishes living in a meadow of Caulerpa prolifera on a bimonthly basis between May 2006 and April 2007 in a semi-enclosed coastal marine ecosystem of the Mediterranean Sea (Elounda Bay, Crete Island). The study area is shallow and protected from waves, and it is covered by a C. prolifera bed, character...
Article
Full-text available
The European spiny lobster Palinurus elephas is a vulnerable species that inhabits and is harvested in the Mediterranean Sea and the adjacent Atlantic waters. The fisheries associated with the spiny lobster are mainly conducted with tangle nets, trammel nets, pots, and creels. The fishing pressure has greatly reduced their numbers, changing them fr...
Article
Full-text available
• 1. The coralligenous habitat was studied at the large Mediterranean scale, by applying a standardized, non‐destructive photo‐sampling protocol, developed in the framework of the CIGESMED project. • 2. The results provided evidence to support the following statements: (a) the assemblage pattern is not homogeneously distributed across the four Medi...
Article
Marine protected areas (MPAs) socio-ecological effectiveness depends on a number of management and governance elements, among which stakeholder engagement and community support play key roles. Collaborative conservation initiatives that engage stakeholders in action research and knowledge co-production processes can enhance management and governanc...
Article
While in recent years intermittent rivers and ephemeral streams (IRES) are receiving increasing attention from ecologists, fish metacommunity dynamics have drawn less attention than other taxa. In this study, we explored fish metacommunity dynamics at a Mediterranean intermittent river (Evrotas River, Southern Greece) to unravel which factors (i.e....
Article
Full-text available
Global change impacts Mediterranean fisheries and the dependent human populations. Overfishing and epizootic diseases related to extreme climatic events are currently accepted as the main threats to the production of commercial bath sponges. Believing that other factors could have impacted this insular fishery, we assembled a 150-year-long series o...
Article
Pharmaceuticals and related compounds are increasingly being released into the marine environment, posing health risks to living organisms. Their accurate determination in marine samples is still an analytical challenge, while they can undergo a series of transformation processes resulting in largely unknown transformation products and health effec...
Article
Full-text available
The cryptogenic parasite Haplosporidium pinnae has caused mass mortality of the protected endemic Mediterranean bivalve Pinna nobilis in the western Mediterranean, since the autumn of 2016. Herein, we confirm the spread of the parasite in the eastern Mediterranean, and report a mass mortality event, with > 93% average mortalities, in the coastal wa...
Article
Coralligenous formations are biogenic structures typical of the underwater Mediterranean seascape. Their intricate, multi-layered species assemblages are composed of perennial, long-lived organisms, particularly vulnerable to natural or human-induced disturbances. Despite their high ecological role and conservation value, few studies have addressed...
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...
Article
The efficacy of a Mediterranean Marine Protected Area (National Marine Park of Zakynthos – NMPZ, Ionian Sea, Greece) that implements a seasonal no-take zone as part of its management scheme was assessed using fish data collected in situ with underwater visual census. Sampling was conducted at two habitat types (Posidonia oceanica meadows and rocky...
Article
Full-text available
The effective conservation of marine biodiversity through an integrated ecosystem-based management approach requires a sound knowledge of the spatial distribution of habitats and species. Although costly in terms of time and resources, acquiring such information is essential for the development of rigorous management plans and the meaningful priori...
Article
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Length-weight relationships are presented for 9 commercial fish species from Psara Island (North Aegean Sea). The species studied are Boops boops, Dentex maroccanus, Helicolenus dactylopterus, Merluccius merluccius, Mullus surmuletus, Pagrus pagrus, Raja clavata, Scyliorhinus canicula and Trachurus picturatus. To our knowledge, there are no publish...
Article
The present study investigates the structure and intra-annual variation of the benthic macrofaunal community associated with a dense monospecific C. prolifera meadow in a shallow semi-enclosed coastal marine ecosystem of the eastern Mediterranean Sea (Elounda Bay, Crete Island). The samples were collected on five occasions (May, September and Novem...
Article
1. Identifying key factors in species' habitat requirements can be of use in defining critical habitats for their conservation, as well as in assisting the prioritization of habitat restoration actions. So far, most studies on habitat use by freshwater fishes have been focused on widespread and economically important species (e.g. salmonids). 2. Th...
Article
Full-text available
Marine protected areas (MPAs) have largely proven to be effective tools for conserving marine ecosystem, while socio-economic benefits generated by MPAs to fisheries are still under debate. Many MPAs embed a no-take zone, aiming to preserve natural populations and ecosystems, within a buffer zone where potentially sustainable activities are allowed...
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...
Article
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Background Over the last decade, inventorying and monitoring of marine biodiversity has significantly benefited from the active engagement of volunteers. Although several Citizen Science projects concern tropical reef ecosystems worldwide, none of the existing initiatives has yet specifically focused on their Mediterranean equivalents. Mediterranea...
Article
Full-text available
This paper describes an occurence dataset, also including numerical abundance and biomass data, pertaining to the macrobenthic molluscan assemblages from a marine - lagoonal environmental transition. The study system was the soft-substrate benthoscape of the area of the Kalloni solar saltworks (Lesvos Island, Greece). Specifically, the study area e...
Article
Full-text available
Background Over the last decade, inventorying and monitoring of marine biodiversity has significantly benefited from the active engagement of volunteers. Although several Citizen Science projects concern tropical reef ecosystems worldwide, none of the existing initiatives has yet specifically focused on their Mediterranean equivalents. Mediterranea...
Data
CIGESMED για δύτες, πολίτες-επιστήμονες για το πρόγραμμα παρακολούθησης των κοραλλιγενών οικοτόπων
Data
CIGESMED for divers – Citizen Science for CIGESMED
Data
CIGESMED pour les plongeurs – Les sciences participatives pour CIGESMED
Data
CIGESMED per i subacquei - Citizen science per CIGESMED
Data
CIGESMED for divers – Citizen Science for CIGESMED
Data
Dalgıçlar için CIGESMED – CIGESMED için Vatandaş Bilimi
Data
Dalgıçlar için CIGESMED – CIGESMED için Vatandaş Bilimi
Data
CIGESMED για δύτες, πολίτες-επιστήμονες για το πρόγραμμα παρακολούθησης των κοραλλιγενών οικοτόπων
Data
CIGESMED pour les plongeurs – Les sciences participatives pour CIGESMED
Data
CIGESMED per i subacquei - Citizen science per CIGESMED
Poster
Full-text available
ΟΙΚΟΛΟΓΙΚΗ ΕΡΕΥΝΑ ΓΙΑ ΤΗΝ ΠΡΟΣΤΑΣΙΑ ΚΑΙ ΔΙΑΧΕΙΡΙΣΗ ΤΟΥ ΕΘΝΙΚΟΥ ΘΑΛΑΣΣΙΟΥ ΠΑΡΚΟΥ ΖΑΚΥΝΘΟΥ Δημητριάδης Χ, Sourbès L, Βαλλή Α.Θ, Κάλλη Ε, Αρβανιτίδης Χ, Κατσανεβάκης Σ, Καρρής Γ, Μαζάρης Α.Δ, Τσίκληρας Α, Κουτσούμπας Δ Τα μέχρι σήμερα αποτελέσματα της επιστημονικής έρευνας στα όρια εξάπλωσης του Εθνικού Θαλάσσιου Πάρκου Ζακύνθου υποδεικνύουν ότι το πρ...
Article
Full-text available
AimBiological invasions are major contributors to global change and native biodiversity decline. However, they are overlooked in marine conservation plans. Here, we examine for the first time the extent to which marine conservation planning research has addressed (or ignored) biological invasions. Furthermore, we explore the change of spatial prior...
Poster
Full-text available
According to the Aichi Biodiverity Target 11 set by the Convention on Biological Diversity, states are committed to protect 10% of marine coastal areas by 2020. In line with this, the ultimate goal of the MARISCA project is to propose a network of Marine Protected Areas (MPAs) for the conservation of all important and vulnerable habitats and specie...
Conference Paper
Full-text available
Coralligenous is one the main Mediterranean hard bottom seascape generating structural complexity and biodiversity. It provides goods and services to several sectors. Pollution, anchors, trawling and diver frequentation may cause its degradation, whilst traditional fishing as well as angling mainly affect target species. Coralligenous may also be s...
Conference Paper
Full-text available
Coralligenous is one the main Mediterranean hard bottom seascape generating structural complexity and biodiversity. It provides goods and services to several sectors. Pollution, anchors, trawling and diver frequentation may cause its degradation, whilst traditional fishing as well as angling mainly affect target species. Coralligenous may also be s...
Conference Paper
Full-text available
Mediterranean coralline reefs, known as " coralligenous " , are bioherms built by calcifying rhodophytes on hard substrates in dim-light conditions. They are hotspots of biodiversity, harbouring rich assemblages and valuable biological resources. The assemblages they host are popular among SCUBA divers due to their complex structure, conspicuous bi...
Conference Paper
Full-text available
Mediterranean coralline reefs, known as " coralligenous " , are bioherms built by calcifying rhodophytes on hard substrates in dim-light conditions. They are hotspots of biodiversity, harbouring rich assemblages and valuable biological resources. The assemblages they host are popular among SCUBA divers due to their complex structure, conspicuous bi...
Technical Report
Full-text available
What is " coralligenous " ? What is commonly called coralligenous is, actually, a complex seascape (i.e. a submerged landscape) developing in dim light conditions, which is present exclusively in the Mediterranean Sea. Coralligenous habitat is mainly created by calcified red algae, which are constructing reef-like structures for thousands of years...
Conference Paper
Full-text available
Data produced by the SeasEra CIGESMED project (Coralligenous based Indicators to evaluate and monitor the "Good Environmental Status" of the MEDiterranean coastal waters) have a high potential to be used by several stakeholders involved in environmental management. A new consortium called IndexMed whose task is to index Mediterranean biodiversity d...
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
Les habitats biogéniques dit « coralligènes » sont principalement construits sur les substrats rocheux par des algues rouges calcaires, en condition de luminosité réduite. Leur grande complexité structurale abrite de nombreuses espèces benthiques, faisant de ces habitats un « hotspot » de biodiversité en mer Méditerranée. Néanmoins, les connaissanc...
Article
Full-text available
In the Mediterranean Sea, infralittoral and circalittoral rocky bottoms (from 15 to 120 m) are characterized by a biogenic habitat, named " coralligenous " , formed by the concretion of calcareous organisms, mainly algal thalli, and to a lesser extent by animal skeletons. This complex habitat is inhabited by a rich fauna that belongs to different t...
Research
The distribution patterns of fish assemblages within streams can provide insights for river type classifications and may warrant specific conservation actions. However, there is limited knowledge of how fish assemblages assort along a longitudinal axis in Mediterranean intermittent streams. Patterns in spatial and temporal distribution of fish comm...
Article
Full-text available
Environmental change can alter both species distribution range patterns at a regional scale and their feeding habits at a local scale. While several studies have highlighted the mechanisms driving such changes separately, little is known on their combined effect on the local communities. In this manuscript, we used both feeding and distributional t...
Poster
Full-text available
Coralligenous reefs are one of the most important biodiversity hotspots of the Mediterranean Sea. The development and the application of management and protection measures aimed at reaching a Good Environmental Status of coastal ecosystems (MSFD, 2008/56/EC) require a deep knowledge about the distribution, the composition, the functioning of the ha...