13 results on '"Kerckhof, F."'
Search Results
2. P694 Chronic cigarette smoke exposure alters the murine gut microbiome
- Author
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Allais, L., Kerckhof, F.-M., Verschuere, S., Bracke, K., De Smet, R., Laukens, D., Devos, M., Boon, N., Brusselle, G., Van de Wiele, T., and Cuvelier, C.
- Published
- 2013
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3. The barnacles Chirona (Striatobalanus) amaryllis (Darwin 1854) and Megabalanus coccopoma (Darwin 1854) (Crustacea, Cirripedia): two invasive species new to tropical West African waters.
- Author
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Kerckhof, F., Haelters, J., and Degraer, S.
- Subjects
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BELLADONNA lily , *CRUSTACEA , *INTRODUCED species , *SHIP hull fouling - Abstract
The collection of the barnacle Chirona (Striatobalanus) amaryllis (Darwin 1954) (Crustacea, Cirripedia) from the hull of a ship that had been operating for five months in the Gulf of Guinea and off Sierra Leone triggered a closer investigation of the cirriped fauna of the West African coast. Both C. amaryllis and Megabalanus coccopoma can now be added to the list of successful invasions in tropical West African waters. This discovery, as well as the circumstances of the findings, necessitates an update of the invertebrate faunal inventory of tropical West African marine waters. [ABSTRACT FROM AUTHOR]
- Published
- 2010
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4. Brucella ceti infection in harbor porpoise (Phocoena phocoena).
- Author
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Jauniaux TP, Brenez C, Fretin D, Godfroid J, Haelters J, Jacques T, Kerckhof F, Mast J, Sarlet M, Coignoul FL, Jauniaux, Thierry P, Brenez, Cecile, Fretin, David, Godfroid, Jacques, Haelters, Jan, Jacques, Thierry, Kerckhof, Francis, Mast, Jan, Sarlet, Michael, and Coignoul, Freddy L
- Abstract
We describe Brucella sp. infection and associated lesions in a harbor porpoise (Phocoena phocoena) found on the coast of Belgium. The infection was diagnosed by immunohistochemistry, transmission electron microscopy, and bacteriology, and the organism was identified as B. ceti. The infection's location in the porpoise raises questions of abortion and zoonotic risks. [ABSTRACT FROM AUTHOR]
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- 2010
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5. Microbiological, chemical and sensory spoilage analysis of raw Atlantic cod (Gadus morhua) stored under modified atmospheres.
- Author
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Al Hage, Y., Vanderroost, M., Ragaert, P., Devlieghere, F., Kuuliala, L., Ioannidis, A.-G., De Meulenaer, B., Sader, M., De Baets, B., Kerckhof, F.-M., and Boon, N.
- Subjects
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ATLANTIC cod , *VOLATILE organic compounds , *MICROBIAL metabolism , *PLATE counts (Microbiology) , *PHOTOBACTERIUM - Abstract
During fish spoilage, microbial metabolism leads to the production of volatile organic compounds (VOCs), characteristic off-odors and eventual consumer rejection. The aim of the present study was to contribute to the development of intelligent packaging technologies by identifying and quantifying VOCs that indicate spoilage of raw Atlantic cod ( Gadus morhua ) under atmospheres (%v/v CO 2 /O 2 /N 2 ) 60/40/0, 60/5/35 and air. Spoilage was examined by microbiological, chemical and sensory analyses over storage time at 4 or 8 °C. Selected-ion flow-tube mass spectrometry (SIFT-MS) was used for quantifying selected VOCs and amplicon sequencing of the 16S rRNA gene was used for the characterization of the cod microbiota. OTUs classified within the Photobacterium genus increased in relative abundance over time under all storage conditions, suggesting that Photobacterium contributed to spoilage and VOC production. The onset of exponential VOC concentration increase and sensory rejection occurred at high total plate counts (7–7.5 log). Monitoring of early spoilage thus calls for sensitivity for low VOC concentrations. [ABSTRACT FROM AUTHOR]
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- 2018
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6. A pioneering longterm experiment on mesophotic macrofouling communities in the North Atlantic.
- Author
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Canning-Clode J, Gizzi F, Braga-Henriques A, Ramalhosa P, Abreu P, Álvarez S, Biscoito M, Buhl-Mortensen P, Delgado J, Esson D, Freitas M, Freitas M, Henriques F, Jakobsen J, Jakobsen K, Kerckhof F, Lüter C, Moura CJ, Radeta M, Rocha RM, Santos R, Sepúlveda P, Silva R, Silva T, Souto J, Triay-Portella R, Wirtz P, Xavier JR, Bastida-Zavala R, Bellou N, Gueroun SKM, and Monteiro JG
- Subjects
- Atlantic Ocean, Animals, Biofouling, Biodiversity, Aquatic Organisms physiology, Ecosystem
- Abstract
The mesophotic zone represents one of our planet's largest and least explored biomes. An increasing number of studies evidence the importance of macrofouling species in marine ecosystems, but information on these communities and the factors influencing their structures at mesophotic depths remain poor. This lack of understanding limits our ability to predict anthropogenic impacts or conduct restoration operations in the mesophotic and the lower boundary of the euphotic zones. In this study, we performed a 24-month experiment in a natural environment to investigate three factors influencing the macrobenthic community structure of the mesophotic and the euphotic lower boundary: depth, substrate orientation and substrate material. Using a manned submersible, several recruitment panels of two different materials were deployed at 100, 200 and 400 meters in vertical and horizontal positions. All three factors contributed to structuring the macrofouling communities, but depth and substrate orientation displayed the strongest effects. This study not only advances our understanding of lower boundary euphotic and mesophotic macrofouling communities but also establishes a foundation for future research and restoration efforts of mesophotic environments in the Madeira archipelago, where mesophotic habitats are amongst the least studied marine habitats in the Northeast Atlantic., Competing Interests: Competing interests: The authors declare no competing interests, (© 2024. The Author(s).)
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- 2024
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7. Using structured eradication feasibility assessment to prioritize the management of new and emerging invasive alien species in Europe.
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Booy O, Robertson PA, Moore N, Ward J, Roy HE, Adriaens T, Shaw R, Van Valkenburg J, Wyn G, Bertolino S, Blight O, Branquart E, Brundu G, Caffrey J, Capizzi D, Casaer J, De Clerck O, Coughlan NE, Davis E, Dick JTA, Essl F, Fried G, Genovesi P, González-Moreno P, Huysentruyt F, Jenkins SR, Kerckhof F, Lucy FE, Nentwig W, Newman J, Rabitsch W, Roy S, Starfinger U, Stebbing PD, Stuyck J, Sutton-Croft M, Tricarico E, Vanderhoeven S, Verreycken H, and Mill AC
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- Animals, Europe, Feasibility Studies, Vertebrates, Ecosystem, Introduced Species
- Abstract
Prioritizing the management of invasive alien species (IAS) is of global importance and within Europe integral to the EU IAS regulation. To prioritize management effectively, the risks posed by IAS need to be assessed, but so too does the feasibility of their management. While the risk of IAS to the EU has been assessed, the feasibility of management has not. We assessed the feasibility of eradicating 60 new (not yet established) and 35 emerging (established with limited distribution) species that pose a threat to the EU, as identified by horizon scanning. The assessment was carried out by 34 experts in invasion management from across Europe, applying the Non-Native Risk Management scheme to defined invasion scenarios and eradication strategies for each species, assessing the feasibility of eradication using seven key risk management criteria. Management priorities were identified by combining scores for risk (derived from horizon scanning) and feasibility of eradication. The results show eradication feasibility score and risk score were not correlated, indicating that risk management criteria evaluate different information than risk assessment. In all, 17 new species were identified as particularly high priorities for eradication should they establish in the future, whereas 14 emerging species were identified as priorities for eradication now. A number of species considered highest priority for eradication were terrestrial vertebrates, a group that has been the focus of a number of eradication attempts in Europe. However, eradication priorities also included a diverse range of other taxa (plants, invertebrates and fish) suggesting there is scope to broaden the taxonomic range of attempted eradication in Europe. We demonstrate that broad scale structured assessments of management feasibility can help prioritize IAS for management. Such frameworks are needed to support evidence-based decision-making., (© 2020 The Authors. Global Change Biology published by John Wiley & Sons Ltd.)
- Published
- 2020
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8. Developing a list of invasive alien species likely to threaten biodiversity and ecosystems in the European Union.
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Roy HE, Bacher S, Essl F, Adriaens T, Aldridge DC, Bishop JDD, Blackburn TM, Branquart E, Brodie J, Carboneras C, Cottier-Cook EJ, Copp GH, Dean HJ, Eilenberg J, Gallardo B, Garcia M, García-Berthou E, Genovesi P, Hulme PE, Kenis M, Kerckhof F, Kettunen M, Minchin D, Nentwig W, Nieto A, Pergl J, Pescott OL, M Peyton J, Preda C, Roques A, Rorke SL, Scalera R, Schindler S, Schönrogge K, Sewell J, Solarz W, Stewart AJA, Tricarico E, Vanderhoeven S, van der Velde G, Vilà M, Wood CA, Zenetos A, and Rabitsch W
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- Animals, Consensus Development Conferences as Topic, Environmental Policy, European Union, Introduced Species statistics & numerical data, Risk Assessment, Biodiversity, Ecosystem, Introduced Species trends
- Abstract
The European Union (EU) has recently published its first list of invasive alien species (IAS) of EU concern to which current legislation must apply. The list comprises species known to pose great threats to biodiversity and needs to be maintained and updated. Horizon scanning is seen as critical to identify the most threatening potential IAS that do not yet occur in Europe to be subsequently risk assessed for future listing. Accordingly, we present a systematic consensus horizon scanning procedure to derive a ranked list of potential IAS likely to arrive, establish, spread and have an impact on biodiversity in the region over the next decade. The approach is unique in the continental scale examined, the breadth of taxonomic groups and environments considered, and the methods and data sources used. International experts were brought together to address five broad thematic groups of potential IAS. For each thematic group the experts first independently assembled lists of potential IAS not yet established in the EU but potentially threatening biodiversity if introduced. Experts were asked to score the species within their thematic group for their separate likelihoods of i) arrival, ii) establishment, iii) spread, and iv) magnitude of the potential negative impact on biodiversity within the EU. Experts then convened for a 2-day workshop applying consensus methods to compile a ranked list of potential IAS. From an initial working list of 329 species, a list of 66 species not yet established in the EU that were considered to be very high (8 species), high (40 species) or medium (18 species) risk species was derived. Here, we present these species highlighting the potential negative impacts and the most likely biogeographic regions to be affected by these potential IAS., (© 2018 The Authors. Global Change Biology Published by John Wiley & Sons Ltd.)
- Published
- 2019
- Full Text
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9. Community structure, population dynamics and diversity of fungi in a full-scale membrane bioreactor (MBR) for urban wastewater treatment.
- Author
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Maza-Márquez P, Vilchez-Vargas R, Kerckhof FM, Aranda E, González-López J, and Rodelas B
- Subjects
- Bioreactors microbiology, Fungi, Phylogeny, Population Dynamics, Membranes, Artificial, Wastewater
- Abstract
Community structure, population dynamics and diversity of fungi were monitored in a full-scale membrane bioreactor (MBR) operated throughout four experimental phases (Summer 2009, Autumn 2009, Summer 2010 and Winter, 2012) under different conditions, using the 18S-rRNA gene and the intergenic transcribed spacer (ITS2-region) as molecular markers, and a combination of temperature-gradient gel electrophoresis and 454-pyrosequencing. Both total and metabolically-active fungal populations were fingerprinted, by amplification of molecular markers from community DNA and retrotranscribed RNA, respectively. Fingerprinting and 454-pyrosequencing evidenced that the MBR sheltered a dynamic fungal community composed of a low number of species, in accordance with the knowledge of fungal diversity in freshwater environments, and displaying a medium-high level of functional organization with few numerically dominant phylotypes. Population shifts were experienced in strong correlation with the changes of environmental variables and operation parameters, with pH contributing the highest level of explanation. Phylotypes assigned to nine different fungal Phyla were detected, although the community was mainly composed of Ascomycota, Basidiomycota and Chytridiomycota/Blastocladiomycota. Prevailing fungal phylotypes were affiliated to Saccharomycetes and Chytridiomycetes/Blastocladiomycetes, which displayed antagonistic trends in their relative abundance throughout the experimental period. Fungi identified in the activated sludge were closely related to genera of relevance for the degradation of organic matter and trace-organic contaminants, as well as genera of dimorphic fungi potentially able to produce plant operational issues such as foaming or biofouling. Phylotypes closely related to genera of human and plant pathogenic fungi were also detected., (Copyright © 2016 Elsevier Ltd. All rights reserved.)
- Published
- 2016
- Full Text
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10. A kernel-based model to predict interaction between methanotrophic and heterotrophic bacteria.
- Author
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Stock M, Hoefman S, Kerckhof FM, Boon N, De Vos P, Heylen K, De Baets B, and Waegeman W
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- Artificial Intelligence, Bacteria classification, Data Mining, Heterotrophic Processes, Methane metabolism, Models, Biological, Bacteria growth & development, Bacteria metabolism, Microbial Interactions
- Published
- 2013
11. The bacterial fingerprint of the armpit and its variation in time.
- Author
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Callewaert C, Kerckhof FM, Granitsiotis M, Van de Wiele T, and Boon N
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- Adult, Female, Humans, Male, Time Factors, Axilla microbiology, Bacteria classification, Bacteria genetics, DNA Fingerprinting, Skin microbiology
- Published
- 2012
12. Selecting nitrifying inocula on different ammonium concentrations.
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Zekker I, Vlaeminck SE, Bagchi S, Courtens E, De Clippeleir H, Kerckhof FM, and Boon N
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- Biomass, Bioreactors microbiology, Dose-Response Relationship, Drug, Waste Disposal, Fluid methods, Bacteria classification, Bacteria metabolism, Quaternary Ammonium Compounds metabolism, Water Pollutants, Chemical metabolism
- Published
- 2012
13. The use of benthic indicators in Europe: from the Water Framework Directive to the Marine Strategy Framework Directive.
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Van Hoey G, Borja A, Birchenough S, Buhl-Mortensen L, Degraer S, Fleischer D, Kerckhof F, Magni P, Muxika I, Reiss H, Schröder A, and Zettler ML
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- Ecosystem, Environmental Monitoring legislation & jurisprudence, Europe, Introduced Species, Water Pollution legislation & jurisprudence, Environmental Monitoring methods, Environmental Policy, Water Pollution prevention & control
- Abstract
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., (Copyright © 2010 Elsevier Ltd. All rights reserved.)
- Published
- 2010
- Full Text
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