Georgios Kazanidis

Georgios Kazanidis
The University of Edinburgh | UoE · School of GeoSciences

PhD

About

88
Publications
12,615
Reads
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363
Citations
Introduction
I am a passionate marine researcher whose interests lie in the field of ecology and biodiversity of marine zoobenthos. Through participation in several surveys I have explored various marine ecosystems including seagrass meadows and cold water reefs. In collaboration with talented people I have examined -among other- the population dynamics and reproduction of echinoderms, the processing of (in)organic matter and the role of environmental conditions in shaping biodiversity and trophic structure.
Additional affiliations
February 2017 - April 2020
The University of Edinburgh
Position
  • PostDoc Position
Description
  • Taxonomy of deep-sea macrobenthos Models on human impacts and changing oceans on deep-sea corals and sponges Marine Strategy Framework Directive in deep sea
February 2016 - November 2016
University of Aberdeen
Position
  • PostDoc Position
Description
  • Participation in the DY051 Research Expedition on RRS "Discovery" Design, execution of experiments and data analysis on the metabolism of deep-sea microbes Public outreach
September 2013 - January 2014
University of Aberdeen
Position
  • PhD Student
Description
  • Advising students, help the academic in charge, essays grading.
Education
January 2012 - June 2016
University of Aberdeen
Field of study
  • Zoology
September 2009 - October 2010
University of Southampton
Field of study
  • Ocean Sciences
September 2003 - December 2008
University of Thessaly
Field of study
  • Ichthyology and Aquatic Environment

Publications

Publications (88)
Article
Full-text available
Biogenic habitats often form hot spots of biodiversity. However, the role of epibiosis and the ‘habitat cascades’ phenomenon in enhancing structural heterogeneity and biodiversity in biogenic habitats in remote and difficult-to-access areas is little known. In this work, we provide the first insight by exploring epibiosis across remote habitats tha...
Technical Report
Full-text available
The joint ICES/NAFO Working Group on Deep-water Ecology (WGDEC) collates new information on the distribution of Vulnerable Marine Ecosystems (VMEs) for use in annual ICES advisory processes and the development of new methods/techniques to further our understanding of deep-sea ecosystems, and further suggests novel management tools to ensure human a...
Article
Vulnerable marine ecosystems (VMEs) are particularly susceptible to bottom-fishing activity as they are easily disturbed and slow to recover. A data-driven approach was developed to provide management options for the protection of VMEs under the European Union “deep-sea access regulations.” A total of two options within two scenarios were developed...
Article
Full-text available
Studies in terrestrial and shallow-water ecosystems have unravelled the key role of interspecific interactions in enhancing biodiversity, but important knowledge gaps persist for the deep sea. Cold-water coral reefs are hotspots of biodiversity, but the role of interspecific interactions and “habitat cascades” (i.e. positive effects on focal organi...
Article
Full-text available
Aim We assessed the effects of regional oceanographic shifts on the macrofaunal biodiversity and biogeography of cold-water coral reefs (CWCRs). CWCRs are often hotspots of biodiversity and ecosystem services and are in the frontline of exposure to multiple human pressures and climate change. Almost nothing is known about how large-scale atmospheri...
Article
Full-text available
Cold seeps support fragile deep-sea communities of high biodiversity and are often found in areas with high commercial interest. Protecting them from encroaching human impacts (bottom trawling, oil and gas exploitation, climate change) requires an advanced understanding of the drivers shaping their spatial distribution and biodiversity. Based on th...
Presentation
Full-text available
Full list and photos of my public engagement activities.
Data
Data sets associated with peer-reviewed publications
Presentation
Full-text available
Implementing European marine policies in the deep waters of the North Atlantic
Presentation
Full-text available
The deep sea is the largest biome on Earth but the least explored hindering sustainable exploitation. The ATLAS project addressed this challenge by facilitating the implementation of EC’s Marine Strategy Framework Directive. Key objectives were: i) suggesting indicators assessing deep-sea status, ii) evaluating the Nested Environmental status Asses...
Presentation
Full-text available
Towards the assessment of North Atlantic deep sea ecosystems’ status: opportunities and challenges unraveled by the ATLAS project.
Article
Full-text available
This study presents a novel approach resulting in the first cold-water coral reef biomass maps, used to assess associated ecosystem functions, such as carbon (C) stock and turnover. We focussed on two dominant ecosystem engineers at the Mingulay Reef Complex, the coral Lophelia pertusa (rubble, live and dead framework) and the sponge Spongosorites...
Presentation
Full-text available
iAtlantic at EuroSea Annual Meeting 2021
Chapter
Sponges (Phylum Porifera) are the oldest extant Metazoans. In the deep sea, sponges can occur at high densities forming habitats known as sponge grounds. Sponge grounds can extend over large areas of up to hundreds of km2 and are biodiversity hotspots. However, as human activities, including deep-water hydrocarbon extraction, continue to expand int...
Article
Full-text available
Divulgative paper published in Journal Eco Magazine, Deep Sea Issue
Article
Full-text available
The deep sea is the largest biome on Earth but the least explored. Our knowledge of it comes from scattered sources spanning different spatial and temporal scales. Implementation of marine policies like the European Union's Marine Strategy Framework Directive (MSFD) and support for Blue Growth in the deep sea are therefore hindered by lack of data....
Article
Full-text available
Many of the marine policy frameworks developed to protect biodiversity in deep-sea areas, including areas beyond national jurisdiction (ABNJ), include indicators to assess policy objectives. These frameworks often have specific guidance on how the indicators should be applied and interpreted. Selection of indicators is an important process and thos...
Technical Report
Full-text available
The joint ICES/NAFO Working Group on Deep-water Ecology (WGDEC) collates new information on the distribution of Vulnerable Marine Ecosystems (VMEs) for use in annual ICES advisory processes and the development of new methods/techniques to further our understanding of deep-sea ecosystems, and further suggests novel management tools to ensure human a...
Article
Full-text available
Circulation patterns in the North Atlantic Ocean have changed and reorganized multiple times over millions of years, influencing the biodiversity, distribution, and connectivity patterns of deep-sea species and ecosystems. In this study, we review the effects of the water mass properties (temperature, salinity, food supply, carbonate chemistry, and...
Article
Full-text available
Determining the scale of anthropogenic impacts is critical in order to understand ecosystem effects of human activities, within the context of changes caused by natural environmental variability. We applied spatial eigenfunction analysis to disentangle effects of anthropogenic drivers from environmental factors on species assembly in the Faroe-Shet...
Article
Full-text available
Carbonate removal using acids is a common practice in ecological studies. The effects, however, of acid pre-treatment on the elemental and isotopic composition of marine invertebrates as well as how these effects vary according to species’ carbonate content is little known. We examined the effects of acid pre-treatment on the elemental (%C, %N, C:N...
Article
Full-text available
Ferromanganese crusts occurring on seamounts are a potential resource for rare earth elements that are critical for low-carbon technologies. Seamounts, however, host vulnerable marine ecosystems (VMEs), which means that spatial management is needed to address potential conflicts between mineral extraction and the conservation of deep-sea biodiversi...
Presentation
Challenges and opportunities in assessing Good Environmental Status in the deep sea: lesson learned from ATLAS
Article
Full-text available
Discovery and understanding of fragile deep-sea habitats like sponge aggregations, are being outpaced by anthropogenic resource exploitation. Sustainable ocean development in the Faroe-Shetland Channel Nature Conservation Marine Protected Area (FSC NCMPA; northeast Atlantic), which harbors sponge aggregations, now requires adaptive management in th...
Presentation
Presentation of work on Good Environmental Status-Biodiversity Assessment in deep North Atlantic.
Presentation
ATLAS Deliverable D3.2b: Case Studies on Effects of Hydrography and Oceanography on �North Atlantic VME Biodiversity and Biogeography.
Presentation
Getting there: advancing knowledge on vulnerable marine ecosystems to support �Blue Growth in the deep sea
Presentation
Towards the assessment of North Atlantic deep-sea ecosystems’ status: opportunities and challenges unraveled by the ATLAS project.
Article
Full-text available
The extent of marine litter and microplastic occurrence across ocean biomes and species remains poorly characterised, particularly in remote deep-water ecosystems. The present study in the East Mingulay Special Area of Conservation (a Marine Protected Area in the Sea of the Hebrides, western Scotland) used historic surveys and benthic samples to ob...
Presentation
Presentation of the ATLAS work on Good Environmental Status in the European Commission's Joint Research Centre in Italy
Presentation
Presentation of the ATLAS work on deep-sea environmental status in the closing meeting of the IDEM project.
Presentation
What does the future hold for ancient marine animals and their microbial symbionts? Unraveling the impacts of climate change on the health status of sponge-microbes consortia and their key role in ecosystem functioning.
Presentation
Distribution, density and size of deep-sea sponge morphotypes in the Faroe-Shetland Channel Sponge Belt Nature Conservation Marine Protected Area.
Presentation
Presentation of the ATLAS work on Good Environmental Status in the deep-sea ecosystems of the North Atlantic.
Article
Sponges are often major players in the functioning of shallow-water ecosystems through their high biomass and high capacity in filter feeding. In comparison, little is known about the feeding and metabolic strategies of deep-sea sponges, although they can also form dense aggregations with high biomass. This situation hinders our understanding about...
Presentation
Full-text available
Presentation of the ATLAS project at the Joint Nature Conservation Committee "Beyond the Coast" conference 2018.
Presentation
Full-text available
Progress in Assessing Good Environmental Status in Deep-sea Benthic Ecosystems: D1, D3, D6 and D10.
Article
Sponges form an important component of benthic ecosystems from shallow littoral to hadal depths. In the deep ocean, beyond the continental shelf, sponges can form high-density fields, constituting important habitats supporting rich benthic communities. Yet these habitats remain relatively unexplored. The oil and gas industry has played an important...
Chapter
Sponges form an important component of benthic ecosystems from shallow littoral to hadal depths. In the deep ocean, beyond the continental shelf, sponges can form high-density fields, constituting important habitats supporting rich benthic communities. Yet these habitats remain relatively unexplored. The oil and gas industry has played an important...
Poster
Full-text available
Phytodetritus are considered as one of the most important food supplies for deep-sea fauna. In Arctic ecosystems, sea ice algae and phytoplankton are known as the main primary producers that reaches the seafloor. So far, little is known about the responses of benthic macrofauna facing future changes regarding quantity and quality of food reaching t...
Presentation
Presentation of the ATLAS project in the 1st Annual Meeting of the MERCES project.
Poster
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ATLAS 2nd General Assembly 2017 - Case Studies 3-4.
Poster
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ATLAS 2nd General Assembly 2017 - Case Studies 1-2.
Poster
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ATLAS 2nd General Assembly - Case Studies overview
Poster
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ATLAS 2nd General Assembly - Case Studies 5-6.
Poster
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ATLAS 2nd General Assembly 2017 - Case Studies 11-12
Poster
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ATLAS 2nd General Assembly 2017 - Case Studies 7-8.
Conference Paper
Full-text available
Introducing ATLAS Case Study 4: The Mingulay Reef Complex
Poster
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Introducing ATLAS Case Study 4: The Mingulay Reef Complex.
Poster
Full-text available
In this poster we describe the benthic macrofauna community in the sediment cores that were used for enrichment experiments.
Article
Full-text available
We examined the isotopic signatures (δ13C, δ15N) of fauna living in association with the sponge Spongosorites coralliophaga colonizing coral rubble on cold-water coral reefs in the northeast Atlantic – the shallow inshore (122–131 m collection depth) Mingulay 01 area and the deep offshore (683–800 m) Logachev 02 mound. The δ15N signatures of suspen...
Article
Full-text available
Cold-water coral reefs (CWRs) in the northeast Atlantic harbor diverse sponge communities. Knowledge of deep-sea sponge ecology is limited and this leaves us with a fragmented understanding of the ecological roles that sponges play in CWR ecosystems. We present the first study of faunal biodiversity associated with the massive demosponge Spongosori...
Presentation
Sponges as biogenic structures in two Cold Water Reefs of the North East Atlantic.
Article
Full-text available
The reproductive cycle of the traditionally exploited sea cucumber Holothuria tubulosa was investigated in the Pagasitikos Gulf (39°18′457″N, 23°05′869″E) from June 2007 to July 2008. The study examined the microscopic characteristics of the gonads and was based on maturity index (MI) and oocytes’ size-frequency distribution. The reproductive cyc...
Data
Full-text available
The reproductive cycle of the traditionally exploited sea cucumber Holothuria tubulosa was investigated in the Pagasitikos Gulf (39°18′457″N, 23°05′869″E) from June 2007 to July 2008. The study examined the microscopic characteristics of the gonads and was based on maturity index (MI) and oocytes’ size-frequency distribution. The reproductive cyc...