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  • 1
    Article
    Article
    The use of benthic indicators in Europe : from the Water Framework Directive to the Marine Strategy Framework Directive (2010)
    Associated volumes
    Details Availability
    In: Marine pollution bulletin, Oxford : Elsevier, 1968, 60(2010), Seite 2187-2196, 0025-326X
    In: volume:60
    In: year:2010
    In: pages:2187-2196
    Type of Medium: Article
    Pages: Ill.
    ISSN: 0025-326X
    DOI: 10.1016/j.marpolbul.2010.09.015
    Language: English
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  • 2
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    Seawater carbonate chemistry and hypoxia tolerance and blood chemistry characteristics of European sea bass (2019)
    PANGAEA
    Details
    Publication Date: 2024-03-20
    Description: Global environmental change is increasing hypoxia in aquatic ecosystems. During hypoxic events, bacterial respiration causes an increase in carbon dioxide (CO2) while oxygen (O2) declines. This is rarely accounted for when assessing hypoxia tolerances of aquatic organisms. We investigated the impact of environmentally realistic increases in CO2 on responses to hypoxia in European sea bass (Dicentrarchus labrax). We conducted a critical oxygen (O2crit) test, a common measure of hypoxia tolerance, using two treatments in which O2 levels were reduced with constant ambient CO2 levels (~530 µatm), or with reciprocal increases in CO2 (rising to ~2,500 µatm). We also assessed blood acid-base chemistry and haemoglobin-O2 binding affinity of sea bass in hypoxic conditions with ambient (~650 μatm) or raised CO2 (~1770 μatm) levels. Sea bass exhibited greater hypoxia tolerance (~20% reduced O2crit), associated with increased haemoglobin-O2 affinity (~32% fall in P50) of red blood cells, when exposed to reciprocal changes in O2 and CO2. This indicates that rising CO2 which accompanies environmental hypoxia facilitates increased O2 uptake by the blood in low O2 conditions, enhancing hypoxia tolerance. We recommend that when impacts of hypoxia on aquatic organisms are assessed, due consideration is given to associated environmental increases in CO2.
    Keywords: Acid-base regulation; Alkalinity, total; Alkalinity, total, standard deviation; Animalia; Aragonite saturation state; Bicarbonate ion; Blood, bicarbonate, blood; Blood, partial pressure of carbon dioxide; Blood, ph; Brackish waters; Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Carbon dioxide, partial pressure, blood; Chordata; Containers and aquaria (20-1000 L or 〈 1 m**2); Covariance; Date; Dicentrarchus labrax; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Haematocrit; Half saturation partial pressure of oxygen; Hill coefficient; Identification; Laboratory experiment; Mass; Metabolic rate, standard; Nekton; North Atlantic; OA-ICC; Ocean Acidification International Coordination Centre; Other studied parameter or process; Oxygen; Oxygen, partial pressure; Oxygen, partial pressure, critical; Oxygen saturation; Oxygen saturation, standard deviation; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH; pH, standard deviation; Registration number of species; Respiration; Salinity; Salinity, standard deviation; Single species; Species; Temperature, water; Temperature, water, standard deviation; Time in hours; Treatment; Type; Uniform resource locator/link to reference
    Type: Dataset
    Format: text/tab-separated-values, 1082 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    Seawater carbonate chemistry and nutritional characteristics of mussels (2019)
    PANGAEA
    In:  Supplement to: San Martín, Valeska; Gelcich, Stefan; Lavín, Felipe Vásquez; Ponce Oliva, Roberto D; Hernández, José I; Lagos, Nelson A; Birchenough, Silvana N R; Vargas, Cristian A (2019): Linking social preferences and ocean acidification impacts in mussel aquaculture. Scientific Reports, 9(1), https://doi.org/10.1038/s41598-019-41104-5
    Details
    Publication Date: 2024-03-15
    Description: Ocean Acidification (OA) has become one of the most studied global stressors in marine science during the last fifteen years. Despite the variety of studies on the biological effects of OA with marine commercial species, estimations of these impacts over consumers' preferences have not been studied in detail, compromising our ability to undertake an assessment of market and economic impacts resulting from OA at local scales. Here, we use a novel and interdisciplinary approach to fill this gap. We experimentally test the impact of OA on commercially relevant physical and nutritional attributes of mussels, and then we use economic discrete choice models to assess the marginal effects of these impacts over consumers' preferences and wellbeing. Results showed that attributes, which were significantly affected by OA, are also those preferred by consumers. Consumers are willing to pay on average 52% less for mussels with evidences of OA and are willing to increase the price they pay to avoid negative changes in attributes due to OA. The interdisciplinary approach developed here, complements research conducted on OA by effectively informing how OA economic impacts can be analyzed under the lens of marginal changes in market price and consumer' welfare. Thereby, linking global phenomena to consumers' wellbeing, and shifting the focus of OA impacts to assess the effects of local vulnerabilities in a wider context of people and businesses.
    Keywords: Alkalinity, total; Alkalinity, total, standard deviation; Animalia; Aragonite saturation state; Aragonite saturation state, standard deviation; Benthic animals; Benthos; Bicarbonate ion; Bicarbonate ion, standard deviation; Bottles or small containers/Aquaria (〈20 L); Calcite saturation state; Calcite saturation state, standard deviation; Calculated using seacarb after Nisumaa et al. (2010); Calculated using seacarb after Orr et al. (2018); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Carbonate system computation flag; Carbon dioxide; Carbon dioxide, standard deviation; Category; Coast and continental shelf; EXP; Experiment; Fatty acid as percentage of total fatty acids; Fatty acids, standard deviation; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Fugacity of carbon dioxide in seawater, standard deviation; Laboratory experiment; Life stage; Mollusca; Mytilus chilensis; Name; North Pacific; OA-ICC; Ocean Acidification International Coordination Centre; Other studied parameter or process; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Percentage; Percentage, standard deviation; pH; pH, standard deviation; Proteins; Proteins, standard deviation; Registration number of species; Salinity; Salinity, standard deviation; Single species; Species; Temperate; Temperature, water; Temperature, water, standard deviation; Time in weeks; Treatment; Type; Uniform resource locator/link to reference; Vilupulli_OA; Vitamin B12; Vitamin B12, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 1936 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 4
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    Seawater carbonate chemistry and survival in Corophium volutator (2012)
    PANGAEA
    Details
    Publication Date: 2024-03-15
    Description: Ocean acidification (OA) may alter the behaviour of sediment-bound metals, modifying their bioavailability and thus toxicity. We provide the first experimental test of this hypothesis with the amphipod Corophium volutator. Amphipods were exposed to two test sediments, one with relatively high metals concentrations (sigma metals 239 mg/kg) and a reference sediment with lower contamination (sigma metals 82 mg/kg) under conditions that mimic current and projected conditions of OA (390 to 1140 μatm pCO2). Survival and DNA damage was measured in the amphipods, while the flux of labile metals was measured in the sediment and water column using Diffusive Gradients in Thin-films. The contaminated sediments became more acutely toxic to C. volutator under elevated pCO2 (1140 μatm). There was also a 2.7-fold increase in DNA damage in amphipods exposed to the contaminated sediment at 750 μatm pCO2, as well as increased DNA-damage in organisms exposed to the reference sediment, but only at 1140 μatm pCO2. The projected pCO2 concentrations increased the flux of nickel (Ni) and zinc (Zn) to labile states in the water column and pore water. However, the increase in metal flux at elevated pCO2 was equal between the reference and contaminated sediments or, occasionally, greater from reference sediments. Hence, the toxicological interaction between OA and contaminants could not be explained by effects of pH on metal speciation. We propose that the additive physiological effects of OA and contaminants will be more important than changes in metal speciation in determining the responses of benthos to contaminated sediments under OA. Our data demonstrate clear potential for near-future OA to increase the susceptibility of benthic ecosystems to contaminants. Environmental policy should consider contaminants within the context of changing environmental conditions. Specifically, sediment metals guidelines may need to be re-evaluated to afford appropriate environmental protection under future conditions of OA.
    Keywords: Alkalinity, total; Animalia; Aragonite saturation state; Arthropoda; Benthic animals; Benthos; Bicarbonate ion; Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Coast and continental shelf; Containers and aquaria (20-1000 L or 〈 1 m**2); Corophium volutator; Dalgety_Bay; DEPTH, sediment, experiment; Elements; EXP; Experiment; Flux, standard deviation; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Identification; Individuals; Inorganic toxins; Laboratory experiment; Metals, labile, flux; Metals, labile, flux, standard error; Mortality/Survival; North Atlantic; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH, standard deviation; Phosphate; Replicate; Salinity; Sediment type; Silicate; Single species; Species, unique identification; Survival; Temperate; Temperature, water; Type
    Type: Dataset
    Format: text/tab-separated-values, 15555 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 5
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    The use of benthic indicators in Europe: from the Water Framework Directive to the Marine Strategy Framework Directive (2010)
    Elsevier
    In:  Marine Pollution Bulletin, 60 . pp. 2187-2196. Date online first: 2010
    Details
    Publication Date: 2019-07-05
    Description: The Water Framework Directive (WFD) and the Marine Strategy Framework Directive (MSFD) are the European umbrella regulations for water systems. It is a challenge for the scientific community to translate the principles of these directives into realistic and accurate approaches. The aim of this paper, conducted by the Benthos Ecology Working Group of ICES, is to describe how the principles have been translated, which were the challenges and best way forward. We have tackled the following principles: the ecosystem-based approach, the development of benthic indicators, the definition of ‘pristine’ or sustainable conditions, the detection of pressures and the development of monitoring programs. We concluded that testing and integrating the different approaches was facilitated during the WFD process, which led to further insights and improvements, which the MSFD can rely upon. Expert involvement in the entire implementation process proved to be of vital importance.
    Type: Article , PeerReviewed
    Format: text
    Format: text
    DOI: 10.1016/j.marpolbul.2010.09.015
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 6
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    Benthos distribution modelling and its relevance for marine ecosystem management (2014)
    OXFORD UNIV PRESS
    In:  EPIC3ICES Journal of Marine Science, OXFORD UNIV PRESS, ISSN: 1054-3139
    Details
    Publication Date: 2014-06-25
    Description: Marine benthic ecosystems are difficult to monitor and assess, which is in contrast to modern ecosystem-based management requiring detailed information at all important ecological and anthropogenic impact levels. Ecosystem management needs to ensure a sustainable exploitation of marine resources as well as the protection of sensitive habitats, taking account of potential multiple-use conflicts and impacts over large spatial scales. The urgent need for large-scale spatial data on benthic species and communities resulted in an increasing application of distribution modelling (DM). The use of DM techniques enables to employ full spatial coverage data of environmental variables to predict benthic spatial distribution patterns. Especially, statistical DMs have opened new possibilities for ecosystem management applications, since they are straightforward and the outputs are easy to interpret and communicate. Mechanistic modelling techniques, targeting the fundamental niche of species, and Bayesian belief networks are the most promising to further improve DM performance in the marine realm. There are many actual and potential management applications ofDMsin the marine benthic environment, these are (i) earlywarning systems for species invasion and pest control, (ii) to assess distribution probabilities of species to be protected, (iii) uses in monitoring design and spatial management frameworks (e.g. MPA designations), and (iv) establishing long-term ecosystem management measures (accounting for future climate-driven changes in the ecosystem). It is important to acknowledge also the limitations associated with DM applications in a marine management context as well as considering new areas for futureDMdevelopments. The knowledge of explanatory variables, for example, setting the basis for DM, will continue to be further developed: this includes both the abiotic (natural and anthropogenic) and the more pressing biotic (e.g. species interactions) aspects of the ecosystem.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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    PAPER (OA)
  • 7
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    Methodological elements for optimising the spatial monitoring design to support regional benthic ecosystem assessments (2019)
    In:  EPIC3Environmental Monitoring Assessment, 191, pp. 423
    Details
    Publication Date: 2019-06-14
    Description: Benthic habitat condition assessments are a requirement under various environmental directives. The Marine Strategy Framework Directive (MSFD),for example, challenges member states in a European sea region to perform comparable assessments of good environmental status and improve coherence of their monitoring programmes by 2020. Currently, North Sea countries operate independent monitoring programmes using nationally defined assessment areas. Lack of an agreed OSPAR or EU scale monitoring method and programme has been identified as a priority science need. This paper proposes a method for the development of a coherent and efficient spatial sampling design for benthic habitats on regional level and gives advice on optimal monitoring effort to get more accurate assessments. We use ecologically relevant assessment areas (strata) across national borders and test spatial sample allocation methods.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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    PAPER (OA)
  • 8
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    Evaluating the effects of man-made structures on macro-benthic ecological functioning in the North Sea (2017)
    In:  EPIC3ICES Annual Science Conference, Fort Lauderdale, USA, 2017-09-18-2017-09-21
    Details
    Publication Date: 2017-09-30
    Description: The sustainable development of the marine environment has resulted in the introduction of man-made structures (MMS) in the North Sea. These structures range from oil and gas platforms, buoys, wrecks to wind turbines, offering additional artificial habitat over predominantly soft-sediment areas. The expected effects from MMS in shallow shelf seas will modify benthic communities over various spatial and temporal scales with repercussions for overall ecosystem functioning. Research on large offshore structures have identified a suite of unique effects ranging from biodiversity changes with repercussions on local ecosystem functioning to the provision of habitat for fouling communities, acting as stepping stones and many other ecological modifications. Consequently, MMS might induce structural, functional and process-driven changes, which are different from those expected in natural soft bottom benthic systems. This study considers soft-sediment and introduced hard-substrate epifouling communities. The combination of these systems provides a unique ecological opportunity to ascertain biodiversity changes triggered by loss and gain of species provided by the addition of MMS. To date, our current understanding of how ecological functioning might be modified by the addition of these MMSs is still in its infancy. Our current analysis aimed at evaluating functional changes with a combination of biological traits analysis and energy flow changes calculated via modelled secondary production. Further, our study compared the different types of introduced MMS among the natural soft sediment communities, disentangling how the ecological functioning of the macrobenthos may be altered by the introduction of these structures, which provides improved concepts for current monitoring assessments.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
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    PAPER (OA)
  • 9
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    Towards answering the “so what” question in marine renewables environmental impact assessment (2017)
    In:  EPIC3ICES Annual Science Conference, Fort Lauderdale, USA, 2017-09-18-2017-09-21
    Details
    Publication Date: 2017-09-30
    Description: Marine renewable energy projects (MREs) are supported by mandatory environmental monitoring programmes due to assumed environmental impacts. These programmes concentrate on the resultant effects of single industrial projects onto biological and physical components contributing to the local ecosystem structure. To date, impact assessments at the ecosystem functioning level (e.g. trophic interactions, nutrient cycling) are largely lacking. This critical knowledge gap hampers our ability to answering the “so what” question when assessing environmental impacts, i.e. whether the observed impacts are classified as good, bad or neutral, and/or acceptable or unacceptable. When assessing MREs, there is a fundamental need to focus on ecosystem functioning at relevant spatial and temporal scales to properly understand ecological impacts and its consequences. Here, we make a science-based plea for an increased investment in large scale impact assessment of MREs focused on ecosystem functioning. This presentation will cover a selection of examples from MRE monitoring programmes, where the current knowledge has limited conclusions on the “so what” question. Further, applications will demonstrate how a proposed ecosystem functioning approach at an appropriate spatial and temporal scale could advance our current assessment. These examples will illustrate the need to expand the current level of MRE monitoring beyond that of community structure and of individual industrial projects. This work will advance and strengthen collaborative MRE monitoring strategies, facilitating scientists, developers and regulators to answer the much needed “so what” question when undertaking environmental assessments, and reassuring stakeholders with high confidence over these assessments.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
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    PAPER (OA)
  • 10
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    Effects of offshore renewables on benthos: prioritizing the ‘known-unknowns’ (2017)
    In:  EPIC3ICES Annual Science Conference, Fort Lauderdale, USA, 2017-09-18-2017-09-21
    Details
    Publication Date: 2017-09-30
    Description: Offshore marine renewables energy developments (MREDs), particularly in the light of extensive offshore wind farm development in shallow shelf seas, are expected to affect the structure and functioning of marine ecosystems. Several activities linked to the installation and operation of MREDs each have their differential impacts onto the ecosystem. The benthos plays key roles in the ecosystem, supporting numerous ecosystem goods and services such as long-term carbon storage and food resources for higher trophic groups (e.g. fish, birds, mammals and including humans). Development of MREDs will initiate processes which are expected to affect benthic assemblages over various, currently unknown, spatial and temporal scales. This work provides a structured overview of ecological cause-effect relationships related to MREDs, based on a set of hypothesis-driven pathways supported by literature (〉230 publications reviewed). Furthermore, this work evaluated the sensitivity of benthic causeeffect relationships to potential effects of MREDs on different spatial and temporal scales and weighted the assessment by confidence in existing knowledge and the consistency of effects among habitats. The outcomes allowed identification of knowledge gaps about ecological processes, in order to prioritize the ‘known-unknowns’ and highlight priority research areas. Our results suggest that the sensitivity of the benthos to MREDs is much higher than previously indicated, particularly where cascading effects lead to changes in ecological functioning. Filling existing knowledge gaps and understanding ecological processes and patterns occurring at low-trophic levels, including those within the benthos, are essential to maintain ecological integrity key to the ecosystem and to society even under MREDs developments.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
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    PAPER (OA)
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