• Home
  • Donna Dimarchopoulou
Donna Dimarchopoulou

Donna Dimarchopoulou
Dalhousie University & Woods Hole Oceanographic Institution

PhD

About

47
Publications
14,431
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
493
Citations
Citations since 2016
43 Research Items
482 Citations
2016201720182019202020212022020406080100120140
2016201720182019202020212022020406080100120140
2016201720182019202020212022020406080100120140
2016201720182019202020212022020406080100120140
Introduction
Broadly, I am interested in the effects of fishing and environmental changes on marine ecosystems. My research focuses on marine fisheries, ecosystem modeling, stock assessments, marine protected areas, and the benefits of fishing restrictions on marine populations. I am currently an Ocean Frontier Institute postdoctoral fellow at Dalhousie University and Woods Hole Oceanographic Institution working on assessing ocean warming effects on shifting fisheries catches in the NW Atlantic Ocean.
Additional affiliations
May 2022 - present
Woods Hole Oceanographic Institution
Position
  • Postdoctoral fellow
Description
  • Assessing ocean warming effects on shifting fisheries catches in the NW Atlantic Ocean
September 2020 - April 2022
University of Rhode Island
Position
  • PostDoc Position
Description
  • Modeling the deepwater demersal multispecies snapper fishery in Indonesia
January 2016 - May 2020
Aristotle University of Thessaloniki
Position
  • Researcher
Description
  • Fisheries management, marine protected areas, stock assessments, marine biology
Education
January 2016 - August 2020
Aristotle University of Thessaloniki
Field of study
  • Ecosystem approach to fisheries management in the Aegean Sea
October 2012 - September 2015
Aristotle University of Thessaloniki
Field of study
  • Hydrobiology and Aquaculture
September 2006 - July 2011

Publications

Publications (47)
Article
Full-text available
The Mediterranean Sea is a renowned biodiversity hotspot influenced by multiple interacting ecological and human forces. A gap analysis on the biology of Mediterranean marine fishes was conducted in 2017, revealing the most studied species and biological characteristics, as well as identifying knowledge gaps and areas of potential future research....
Article
The aim of the present work is to present the structure of a mass balanced Ecopath model in the Aegean Sea, a highly exploited ecosystem located in the eastern Mediterranean Sea, between Greece and Turkey. The model represents the yearly average between 2003 and 2006 and includes 44 functional groups. The Aegean Sea is an overall oligotrophic syste...
Article
This account serves as the introduction to a Special Issue of the journal Environmental Biology of Fishes. It includes 18 contributions, 12 of which deal predominantly with warming, four explicitly with deoxygenation, one providing the framework, and one addressing how warming and deoxygenation—which all contributions view, implicitly or explicitly...
Conference Paper
Full-text available
We updated the investigation of the knowledge gap in the biological characteristics of Mediterranean marine fishes, five years after the initial gap analysis was published. We extracted literature containing information on eight characteristics, namely, length-weight relationships, growth, maximum age, mortality, spawning, maturity, fecundity and d...
Article
Marine protected areas (MPAs) have been demonstrated to positively affect various aspects of their ecosystems and communities. In the present study, the effectiveness of varying protection levels on the coastal fish populations within a multiple-use marine park in Greece was assessed through community-level metrics using a non-destructive underwate...
Article
Full-text available
The previously studied geographic variability in the growth patterns of different European sardine or European pilchard (Sardina pilchardus) populations has been attributed to the trophic status and productivity of the various ecosystems, as well as the genetic distance among populations. However, in the face of ocean warming and its multifaceted e...
Article
Ecosystem modelling constitutes a useful tool for the ecosystem approach to fisheries management, which demands a shift to more complex models that include multi-species trophic interactions, environmental and anthropogenic forcing. The Thermaikos Gulf is a shallow gulf in the northwestern Aegean Sea (Greece) and one of the major fishing grounds of...
Article
Full-text available
Understanding the resilience of temperate reefs to climate change requires exploring the recovery capacity of their habitat-forming species from recurrent marine heatwaves (MHWs). Here, we show that, in a Mediterranean highly enforced marine protected area established more than 40 years ago, habitat-forming octocoral populations that were first aff...
Article
The deep demersal snapper-grouper fishery in Indonesia is a data-poor fisheries resource that provides food security and a source of income to millions globally. Owing to an ongoing crew-operated data recording system implemented in Indonesia since 2015, the stocks of this fishery can now be assessed using length-frequency data and updated life-his...
Article
Full-text available
Ocean warming has been affecting marine ecosystems over the past few decades. The signature of ocean warming in global fisheries catch data has been identified through a variety of methods, one of which is the mean temperature of the catch (MTC) index. The MTC is derived from the average temperature preference of fished species weighted by their co...
Article
Full-text available
Large sharks and rays are generally understudied in the Mediterranean Sea, thus leading to a knowledge gap of basic biological characteristics that are important in fisheries management and ecosystem modeling. Out of the 76 sharks and rays inhabiting the Mediterranean Sea, the length-weight relations (LWR) are available for 28 (37%) of them, usuall...
Article
Full-text available
Eutrophication is one of the most important anthropogenic pressures impacting coastal seas. In Europe, several legislations and management measures have been implemented to halt nutrient overloading in marine ecosystems. This study evaluates the impact of freshwater nutrient control measures on higher trophic levels (HTL) in European marine ecosyst...
Article
Full-text available
The status of the Mediterranean Sea fisheries was evaluated across the seven subdivisions of the General Fisheries Commission for the Mediterranean (GFCM), using ecotrophic and catch-based indicators for the period 1970-2017. All indicators confirmed that the fishery resources across the Mediterranean Sea are no longer sustainably exploited and tha...
Article
Full-text available
Stocks with low market value are rarely included in stock assessments because their catch records are generally lacking, thus adding to the already large number of un-assessed fisheries at a global scale. This deficiency is more evident in the Mediterranean Sea where stock assessments are relatively fewer. A new method (AMSY) has been recently deve...
Chapter
Fishes occur in a wider range of habitats than any other vertebrate or invertebrate group, from the upper reaches of streams in high mountain ranges to the mouths of temperate and tropical rivers, and from the intertidal zone to the ocean׳s abyss. Fish grow in size, spawn and die, either from natural causes (predation, diseases, ageing) or from bei...
Article
In the current study, data on Greek marine recreational fisheries regarding the number of individual recreational fishing and vessel licenses issued until 2014 are given. Moreover, using information from a questionnaire-based survey, based on 52 responses, recreational catches in two localities in the Aegean Sea (GSA 22: Thermaikos Gulf and Aloniss...
Thesis
Full-text available
The world’s fisheries are in crisis. The oceans are depleted and, as a result, fisheries catches are declining. Ocean warming and other human-induced stressors are also impacting the marine environment. Shifting marine ecosystems call for adaptable and responsive management strategies to minimize potential negative impacts on habitats and biodivers...
Chapter
Full-text available
This contribution presents the detailed responses to the peer-review of Froese et al. (2019) "Estimating stock status from relative abundance and resilience" (ICES J. Mar. Sci. 2019) which outlined a method called "AMSY" for inferring biomass trends for stocks for which only catch-per-unit-effort and limited ancillary ('priors') data are available....
Article
According to the official landings as reported by the international databases for Greece, the declining trend of the Greek marine fisheries landings that had been continuous since the mid 1990s has been reversed during the last three years, with the total marine fisheries landings showing elevated values after 2016. We claim that this upward trend...
Article
Full-text available
The Law of the Sea and regional and national laws and agreements require exploited populations or stocks to be managed so that they can produce maximum sustainable yields. However, exploitation level and stock status are unknown for most stocks because the data required for full stock assessments are missing. This study presents a new method [abund...
Preprint
Full-text available
According to the official landings as reported by the international databases for Greece, the declining trend of the Greek marine fisheries landings that had been continuous since the mid 1990s has been reversed during the last two years, with the total marine fisheries landings showing elevated catches after 2016. We claim that this upward trend i...
Article
Full-text available
Ecosystem models can be used as fisheries management tools in the context of a holistic approach and view of assessing the status of aquatic ecosystems and proposing plans of action. The Ecopath with Ecosim modeling suite has been widely used to describe exploited marine systems and perform simulations over time. Pagasitikos Gulf is a shallow semi-...
Book
Full-text available
The 14th International Congress on the Zoogeography and Ecology of Greece and Adjacent Regions (ICZEGAR) is taking place in Thessaloniki, Greece, in 27-30 June 2019. The ICZEGAR is returning to Thessaloniki after 17 years, carrying a long and successful tradition of 42 years. This experience has demonstrated that ICZEGAR is an important crossroad f...
Article
Full-text available
There is a recognized need for new methods with modest data requirements to provide preliminary estimates of stock status for data-limited stocks (e.g. Rudd and Thorson, 2018). Froese et al. (2018)provide such a method, which derives estimates of relative stock size from length frequency (LF) data of exploited stocks. They show that their length-ba...
Article
Full-text available
This study presents a new method (LBB) for the analysis of length frequency data from commercial catches. LBB works for species that grow throughout their lives, such as most commercially-important fish and invertebrates, and requires no input in addition to length frequency data. It estimates asymptotic length, length at first capture, relative na...
Article
In the Mediterranean Sea, recreational fishing is part of the local culture and has been practiced for centuries using various techniques and gears. Yet, recreational fishing effort and catches are not officially recorded in most Mediterranean countries, Greece included. The objective of this work was to estimate the number of vessels fishing for r...
Article
Full-text available
Since January 2014, the reformed Common Fisheries Policy (CFP) of the European Union is legally binding for all Member States. It prescribes the end of overfishing and the rebuilding of all stocks above levels that can produce maximum sustainable yields (MSY). This study examines the current status, exploitation pattern, required time for rebuildin...
Article
Full-text available
The multi-level benefits that marine organisms gain when protected from fishing are well acknowledged. Here, we investigated the effects of a 40-year trawling ban on the status of targeted and non-targeted marine species within a major fishing ground in the northeastern Mediterranean Sea (Thermaikos Gulf, Aegean Sea). Biomass and somatic length of...
Article
The spatial heterogeneity of sessile benthos was investigated, for the first time in the eastern Mediterranean, in a semi-submerged cave of a NATURA 2000 Special Protection Area in the North Aegean Sea. The use of a non-destructive photographic method and advanced image analysis revealed the presence of 46 taxa of Chlorophyta, Ochrophyta, Rhodophyt...
Article
Full-text available
An up-to-date systematic review and unofficial codification of the national fisheries legislation was conducted, along with an up-to-date systematic review of environmental, archaeological and maritime legislation, about spatio-temporal restrictions of fishing activities, by all fishing gears, in the Aegean Sea. Spatio-temporal restrictions establi...
Article
Full-text available
We estimated the current level of knowledge concerning several biological characteristics of the Mediterranean marine fishes by carrying out a gap analysis based on information extracted from the literature, aiming to identify research trends and future needs in the field of Mediterranean fish biology that can be used in stock assessments, ecosyste...
Conference Paper
Full-text available
Ecosystem based fisheries management encompasses all components of the ecosystem and requires biological knowledge of a wide range of fishes, even non-targeted and non-commercial species. In order to estimate the current level of knowledge concerning several biological characteristics of the Greek marine fishes, a gap analysis based on information...
Conference Paper
Full-text available
We estimated the current level of knowledge concerning several biological characteristics of the Mediterranean fishes by performing a gap analysis based on information extracted from FishBase, aiming to identify research trends and future needs in the field of Mediterranean fish biology that can be used in ecosystem based fisheries management.
Conference Paper
Full-text available
In an effort to enrich the incomplete knowledge concerning the biodiversity of marine caves we studied a semi-submerged cave in the north Aegean Sea, using a non-destructive method (photo-quadrats), and provided quantitative data on hard substrate biotic coverage and zonation of benthic communities in relation to the particular cave topography.
Conference Paper
Full-text available
Various morphological types of marine caves have been identified across the Mediterranean rocky coasts. Morphological complexity inside caves creates abiotic gradients which are reflected in the spatial heterogeneity of sessile benthos. To date, distinct patterns of biotic zonation have been described in different cave types of the northwestern and...
Article
Full-text available
Scientific information on the biodiversity of marine caves in the eastern Mediterranean is limited, especially when considering the extensively studied caves of the north-western and central Mediterranean. Aiming to enhance current knowledge regarding cave communities, this study represents a first assessment of the marine cave biota of the eastern...
Conference Paper
Full-text available
Natural History Museums are strong poles of attraction towards environmental awareness for the protection of nature, as they have the amazing ability to influence and shape the scientific knowledge of the numerous visitors who are attracted by the authentic, living material that they can see and examine. The implementation of organized educational...

Network

Cited By