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1. Mid-infrared supermirrors with finesse exceeding 400 000

Author

Truong, G. -W., Perner, L. W., Bailey, D. M., Winkler, G., Cataño-Lopez, S. B., Wittwer, V. J., Sudmeyer, T., Nguyen, C., Follman, D., Fleisher, A. J., Heckl, O. H., and Cole, G. D.

Subjects
Physics - Optics
Abstract

For trace gas sensing and precision spectroscopy, optical cavities incorporating low-loss mirrors are indispensable for path length and optical intensity enhancement. Optical interference coatings in the visible and near-infrared (NIR) spectral regions have achieved total optical losses below 2 parts per million (ppm), enabling a cavity finesse in excess of 1 million. However, such advancements have been lacking in the mid-infrared (MIR), despite substantial scientific interest. Here, we demonstrate a significant breakthrough in high-performance MIR mirrors, reporting substrate-transferred single-crystal interference coatings capable of cavity finesse values from 200 000 to 400 000 near 4.5 um, with excess optical losses (scatter and absorption) below 5 ppm. In a first proof-of-concept demonstration, we achieve the lowest noise-equivalent absorption in a linear cavity ring-down spectrometer normalized by cavity length. This substantial improvement in performance will unlock a rich variety of MIR applications for atmospheric transport and environmental sciences, detection of fugitive emissions, process gas monitoring, breath-gas analysis, and verification of biogenic fuels and plastics., Comment: Sept 21: Minor revisions to conform to 2-page length requirement including abbr. refs.; Figure font sizes increased Jul 24: Major revisions, including hybrid mirrors and spectroscopy

Published
2022
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2. Mid-infrared monocrystalline interference coatings with excess optical loss below 10 ppm

Author

Winkler, G., Perner, L. W., Truong, G. -W., Zhao, G., Bachmann, D., Mayer, A. S., Fellinger, J., Follman, D., Heu, P., Deutsch, C., Bailey, D. M., Peelaers, H., Puchegger, S., Fleisher, A. J., Cole, G. D., and Heckl, O. H.

Subjects
Physics - Optics, Condensed Matter - Materials Science
Abstract

We present high-reflectivity substrate-transferred single-crystal GaAs/AlGaAs interference coatings at a center wavelength of 4.54 um with record-low excess optical loss below 10 parts per million. These high-performance mirrors are realized via a novel microfabrication process that differs significantly from the production of amorphous multilayers generated via physical vapor deposition processes. This new process enables reduced scatter loss due to the low surface and interfacial roughness, while low background doping in epitaxial growth ensures strongly reduced absorption. We report on a suite of optical measurements, including cavity ring-down, transmittance spectroscopy, and direct absorption tests to reveal the optical losses for a set of prototype mirrors. In the course of these measurements, we observe a unique polarization-orientation-dependent loss mechanism which we attribute to elastic anisotropy of these strained epitaxial multilayers. A future increase in layer count and a corresponding reduction of transmittance will enable optical resonators with a finesse in excess of 100 000 in the mid-infrared spectral region, allowing for advances in high resolution spectroscopy, narrow-linewidth laser stabilization, and ultrasensitive measurements of various light-matter interactions.

Published
2020

4. Mid-infrared interference coatings with excess optical loss below 10 ppm: erratum

Author

Perner, L. W., primary, Winkler, G., additional, Truong, G.-W., additional, Zhao, G., additional, Bachmann, D., additional, Mayer, A. S., additional, Fellinger, J., additional, Follman, D., additional, Heu, P., additional, Deutsch, C., additional, Bailey, D. M., additional, Peelaers, H., additional, Puchegger, S., additional, Fleisher, A. J., additional, Cole, G. D., additional, and Heckl, O. H., additional

Published
2024
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12. Introduction

Author

King, N. J., Bailey, D. M., and Priede, I. G.

Published
2007

15. Treatment of Multisystem Inflammatory Syndrome in Children

Author

McArdle A. J., Vito O., Patel H., Seaby E. G., Shah P., Wilson C., Broderick C., Nijman R., Tremoulet A. H., Munblit D., Ulloa-Gutierrez R., Carter M. J., De T., Hoggart C., Whittaker E., Herberg J. A., Kaforou M., Cunnington A. J., Levin M., Vazquez J. A., Carmona R., Perez L., Rubinos M., Veliz N., Yori S., Haerynck F., Hoste L., Leal I. A., Da Silva A. R. A., Silva A. E. A., Barchik A., Barreiro S. T. A., Cochrane N., Teixeira C. H., Arauj J. M., Ossa R. A. P. -D. L., Vieira C. S., Dimitrova A., Ganeva M., Stefanov S., Telcharova-Mihaylovska A., Biggs C. M., Scuccimarri R., Withington D., Raul B. B., Ampuero C., Aravena J., Casanova D., Cruces P., Diaz F., Garcia-Salum T., Godoy L., Medina R. A., Galaz G. V., Avila-Aguero M. L., Brenes-Chacon H., Ivankovich-Escoto G., Yock-Corrales A., Badib A., Badreldin K., Elkhashab Y., Heshmat H., Heinonen S., Angoulvant F., Belot A., Ouldali N., Beske F., Heep A., Masjosthusmann K., Reiter K., Heuvel I. V. D., Both U. V., Agrafiotou A., Antachopoulos C., Eleftheriou I., Farmaki E., Fotis L., Kafetzis D., Lampidi S., Liakopoulou T., Maritsi D., Michailidou E., Milioudi M., Mparmpounaki I., Papadimitriou E., Papaevangelou V., Roilides E., Tsiatsiou O., Tsolas G., Tsolia M., Vantsi P., Pineda L. Y. B., Aguilar K. L. B., Quintero E. M. C., Ip P., Kwan M. Y. W., Kwok J., Lau Y. L., To K., Wong J. S. C., David M., Farkas D., Kalcakosz S., Szekeres K., Zsigmond B., Aslam N., Andreozzi L., Bianco F., Bucciarelli V., Buonsenso D., Cimaz R., D'Argenio P., Dellepiane R. M., Fabi M., Mastrolia M. V., Mauro A., Mazza A., Romani L., Simonini G., Tipo V., Valentini P., Verdoni L., Reel B., Pace D., Torpiano P., Flores M. F., Dominguez M. G., Vargas A. L. G., Hernandez L. L., Figueroa R. P. M., Gaxiola G. P., Valadez J., Klevberg S., Knudsen P. K., Maseide P. H., Carrera J. M., Castano E. G., Timana C. A. D., Leon T. D., Estripeaut D., Levy J., Norero X., Record J., Rojas-Bonilla M., Iramain R., Hernandez R., Huaman G., Munaico M., Peralta C., Seminario D., Yarleque E. H. Z., Gadzinska J., Mandziuk J., Okarska-Napierala M., Alacheva Z. A., Alexeeva E., Ananin P. V., Antsupova M., Bakradze M. D., Bobkova P., Borzakova S., Chashchina I. L., Fisenko A. P., Gautier M. S., Glazyrina A., Kondrikova E., Korobyants E., Korsunskiy A. A., Kovygina K., Krasnaya E., Kurbanova S., Kurdup M. K., Mamutova A. V., Mazankova L., Mitushin I. L., Nargizyan A., Orlova Y. O., Osmanov I. M., Polyakova A. S., Romanova O., Samitova E., Sologub A., Spiridonova E., Tepaev R. F., Tkacheva A. A., Yusupova V., Zholobova E., Grasa C. D., Segura N. L., Martinon-Torres F., Melendo S., Echevarria A. M., Guzman J. M. M., Argueta J. R. P., Rivero-Calle I., Riviere J., Rodriguez-Gonzalez M., Rojo P., Manubens J. S., Soler-Palacin P., Soriano-Arandes A., Tagarro A., Villaverde S., Altman M., Brodin P., Horne A., Palmblad K., Brotschi B., Sauteur P. M., Schmid J. P., Prader S., Relly C., Schlapbach L. J., Seiler M., Truck J., Wutz D., Ketharanathan N., Vermont C., Ozkan E. A., Erdeniz E. H., Borisova G., Boychenko L., Diudenko N., Kasiyan O., Katerynych K., Melnyk K., Miagka N., Teslenko M., Trykosh M., Volokha A., Akomolafe T., Al-Abadi E., Alders N., Avram P., Bamford A., Bank M., Roy R. B., Beattie T., Boleti O., Broad J., Carrol E. D., Chandran A., Cooper H., Davies P., Emonts M., Evans C., Fidler K., Foster C., Gong C., Gongrun B., Gonzalez C., Grandjean L., Grant K., Hacohen Y., Hall J., Hassell J., Hesketh C., Hewlett J., Hnieno A., Holt-Davis H., Hossain A., Hudson L. D., Johnson M., Johnson S., Jyothish D., Kampmann B., Kavirayani A., Kelly D., Kucera F., Langer D., Lillie J., Longbottom K., Lyall H., MacKdermott N., Maltby S., McLelland T., McMahon A. -M., Miller D., Morrison Z., Mosha K., Muller J., Myttaraki E., Nadel S., Osaghae D., Osman F., Ostrzewska A., Panthula M., Papachatzi E., Papadopoulou C., Penner J., Polandi S., Prendergast A. J., Ramnarayan P., Rhys-Evans S., Riordan A., Rodrigues C. M. C., Romaine S., Seddon J., Shingadia D., Srivastava A., Struik S., Taylor A., Tran S., Tudor-Williams G., Van Der Velden F., Ventilacion L., Wellman P. A., Yanney M. P., Yeung S., Badheka A., Badran S., Bailey D. M., Burch A. K., Burns J. C., Cichon C., Cirks B., Dallman M. D., Delany D. R., Fairchok M., Friedman S., Geracht J., Langs-Barlow A., Mann K., Padhye A., Quade A., Ramirez K. A., Rockett J., Sayed I. A., Shahin A. A., Umaru S., Widener R., Angela M. H., Kandawasvika G., McArdle A.J., Vito O., Patel H., Seaby E.G., Shah P., Wilson C., Broderick C., Nijman R., Tremoulet A.H., Munblit D., Ulloa-Gutierrez R., Carter M.J., De T., Hoggart C., Whittaker E., Herberg J.A., Kaforou M., Cunnington A.J., Levin M., Vazquez J.A., Carmona R., Perez L., Rubinos M., Veliz N., Yori S., Haerynck F., Hoste L., Leal I.A., Da Silva A.R.A., Silva A.E.A., Barchik A., Barreiro S.T.A., Cochrane N., Teixeira C.H., Arauj J.M., Ossa R.A.P.-D.L., Vieira C.S., Dimitrova A., Ganeva M., Stefanov S., Telcharova-Mihaylovska A., Biggs C.M., Scuccimarri R., Withington D., Raul B.B., Ampuero C., Aravena J., Casanova D., Cruces P., Diaz F., Garcia-Salum T., Godoy L., Medina R.A., Galaz G.V., Avila-Aguero M.L., Brenes-Chacon H., Ivankovich-Escoto G., Yock-Corrales A., Badib A., Badreldin K., Elkhashab Y., Heshmat H., Heinonen S., Angoulvant F., Belot A., Ouldali N., Beske F., Heep A., Masjosthusmann K., Reiter K., Heuvel I.V.D., Both U.V., Agrafiotou A., Antachopoulos C., Eleftheriou I., Farmaki E., Fotis L., Kafetzis D., Lampidi S., Liakopoulou T., Maritsi D., Michailidou E., Milioudi M., Mparmpounaki I., Papadimitriou E., Papaevangelou V., Roilides E., Tsiatsiou O., Tsolas G., Tsolia M., Vantsi P., Pineda L.Y.B., Aguilar K.L.B., Quintero E.M.C., Ip P., Kwan M.Y.W., Kwok J., Lau Y.L., To K., Wong J.S.C., David M., Farkas D., Kalcakosz S., Szekeres K., Zsigmond B., Aslam N., Andreozzi L., Bianco F., Bucciarelli V., Buonsenso D., Cimaz R., D'Argenio P., Dellepiane R.M., Fabi M., Mastrolia M.V., Mauro A., Mazza A., Romani L., Simonini G., Tipo V., Valentini P., Verdoni L., Reel B., Pace D., Torpiano P., Flores M.F., Dominguez M.G., Vargas A.L.G., Hernandez L.L., Figueroa R.P.M., Gaxiola G.P., Valadez J., Klevberg S., Knudsen P.K., Maseide P.H., Carrera J.M., Castano E.G., Timana C.A.D., Leon T.D., Estripeaut D., Levy J., Norero X., Record J., Rojas-Bonilla M., Iramain R., Hernandez R., Huaman G., Munaico M., Peralta C., Seminario D., Yarleque E.H.Z., Gadzinska J., Mandziuk J., Okarska-Napierala M., Alacheva Z.A., Alexeeva E., Ananin P.V., Antsupova M., Bakradze M.D., Bobkova P., Borzakova S., Chashchina I.L., Fisenko A.P., Gautier M.S., Glazyrina A., Kondrikova E., Korobyants E., Korsunskiy A.A., Kovygina K., Krasnaya E., Kurbanova S., Kurdup M.K., Mamutova A.V., Mazankova L., Mitushin I.L., Nargizyan A., Orlova Y.O., Osmanov I.M., Polyakova A.S., Romanova O., Samitova E., Sologub A., Spiridonova E., Tepaev R.F., Tkacheva A.A., Yusupova V., Zholobova E., Grasa C.D., Segura N.L., Martinon-Torres F., Melendo S., Echevarria A.M., Guzman J.M.M., Argueta J.R.P., Rivero-Calle I., Riviere J., Rodriguez-Gonzalez M., Rojo P., Manubens J.S., Soler-Palacin P., Soriano-Arandes A., Tagarro A., Villaverde S., Altman M., Brodin P., Horne A., Palmblad K., Brotschi B., Sauteur P.M., Schmid J.P., Prader S., Relly C., Schlapbach L.J., Seiler M., Truck J., Wutz D., Ketharanathan N., Vermont C., Ozkan E.A., Erdeniz E.H., Borisova G., Boychenko L., Diudenko N., Kasiyan O., Katerynych K., Melnyk K., Miagka N., Teslenko M., Trykosh M., Volokha A., Akomolafe T., Al-Abadi E., Alders N., Avram P., Bamford A., Bank M., Roy R.B., Beattie T., Boleti O., Broad J., Carrol E.D., Chandran A., Cooper H., Davies P., Emonts M., Evans C., Fidler K., Foster C., Gong C., Gongrun B., Gonzalez C., Grandjean L., Grant K., Hacohen Y., Hall J., Hassell J., Hesketh C., Hewlett J., Hnieno A., Holt-Davis H., Hossain A., Hudson L.D., Johnson M., Johnson S., Jyothish D., Kampmann B., Kavirayani A., Kelly D., Kucera F., Langer D., Lillie J., Longbottom K., Lyall H., MacKdermott N., Maltby S., McLelland T., McMahon A.-M., Miller D., Morrison Z., Mosha K., Muller J., Myttaraki E., Nadel S., Osaghae D., Osman F., Ostrzewska A., Panthula M., Papachatzi E., Papadopoulou C., Penner J., Polandi S., Prendergast A.J., Ramnarayan P., Rhys-Evans S., Riordan A., Rodrigues C.M.C., Romaine S., Seddon J., Shingadia D., Srivastava A., Struik S., Taylor A., Tran S., Tudor-Williams G., Van Der Velden F., Ventilacion L., Wellman P.A., Yanney M.P., Yeung S., Badheka A., Badran S., Bailey D.M., Burch A.K., Burns J.C., Cichon C., Cirks B., Dallman M.D., Delany D.R., Fairchok M., Friedman S., Geracht J., Langs-Barlow A., Mann K., Padhye A., Quade A., Ramirez K.A., Rockett J., Sayed I.A., Shahin A.A., Umaru S., Widener R., Angela M.H., Kandawasvika G., Pediatric Surgery, Pediatrics, University of Zurich, National Institute of Health and Medical Research, Wellcome Trust, Medical Research Foundation, Shah, Priyen [0000-0001-9164-8862], Ulloa-Gutierrez, Rolando [0000-0002-9157-9227], Herberg, Jethro A [0000-0001-6941-6491], Cunnington, Aubrey J [0000-0002-1305-3529], Levin, Michael [0000-0003-2767-6919], and Apollo - University of Cambridge Repository

Subjects
Inotrope, Male, medicine.medical_treatment, 2700 General Medicine, 030204 cardiovascular system & hematology, Antibodies, Viral, Medical and Health Sciences, Cohort Studies, 0302 clinical medicine, Glucocorticoid, hemic and lymphatic diseases, Medicine and Health Sciences, 030212 general & internal medicine, Viral, Child, 11 Medical and Health Sciences, OUTCOMES, Respiration, Immunoglobulins, Intravenous, General Medicine, Systemic Inflammatory Response Syndrome, 3. Good health, Hospitalization, Treatment Outcome, Child, Preschool, Combination, Artificial, Regression Analysis, Drug Therapy, Combination, Female, Original Article, Intravenous, Life Sciences & Biomedicine, Cohort study, Human, medicine.medical_specialty, BATS Consortium, Adolescent, Immunoglobulins, 610 Medicine & health, Regression Analysi, Antibodies, Immunomodulation, 03 medical and health sciences, Medicine, General & Internal, Pharmacotherapy, Drug Therapy, Clinical Research, Internal medicine, General & Internal Medicine, medicine, MANAGEMENT, Confidence Intervals, Humans, Preschool, Propensity Score, Glucocorticoids, Mechanical ventilation, Science & Technology, business.industry, SARS-CoV-2, Inflammatory and immune system, COVID-19, Odds ratio, medicine.disease, Respiration, Artificial, Confidence interval, KAWASAKI-LIKE DISEASE, COVID-19 Drug Treatment, Systemic inflammatory response syndrome, 10036 Medical Clinic, Immunoglobulins, Intravenou, Propensity score matching, Cohort Studie, business, ACUTE RESPIRATORY SYNDROME, Confidence Interval, TOXIC-SHOCK-SYNDROME
Abstract

BackgroundEvidence is urgently needed to support treatment decisions for children with multisystem inflammatory syndrome (MIS-C) associated with severe acute respiratory syndrome coronavirus 2.MethodsWe performed an international observational cohort study of clinical and outcome data regarding suspected MIS-C that had been uploaded by physicians onto a Web-based database. We used inverse-probability weighting and generalized linear models to evaluate intravenous immune globulin (IVIG) as a reference, as compared with IVIG plus glucocorticoids and glucocorticoids alone. There were two primary outcomes: the first was a composite of inotropic support or mechanical ventilation by day 2 or later or death; the second was a reduction in disease severity on an ordinal scale by day 2. Secondary outcomes included treatment escalation and the time until a reduction in organ failure and inflammation.ResultsData were available regarding the course of treatment for 614 children from 32 countries from June 2020 through February 2021; 490 met the World Health Organization criteria for MIS-C. Of the 614 children with suspected MIS-C, 246 received primary treatment with IVIG alone, 208 with IVIG plus glucocorticoids, and 99 with glucocorticoids alone; 22 children received other treatment combinations, including biologic agents, and 39 received no immunomodulatory therapy. Receipt of inotropic or ventilatory support or death occurred in 56 patients who received IVIG plus glucocorticoids (adjusted odds ratio for the comparison with IVIG alone, 0.77; 95% confidence interval [CI], 0.33 to 1.82) and in 17 patients who received glucocorticoids alone (adjusted odds ratio, 0.54; 95% CI, 0.22 to 1.33). The adjusted odds ratios for a reduction in disease severity were similar in the two groups, as compared with IVIG alone (0.90 for IVIG plus glucocorticoids and 0.93 for glucocorticoids alone). The time until a reduction in disease severity was similar in the three groups.ConclusionsWe found no evidence that recovery from MIS-C differed after primary treatment with IVIG alone, IVIG plus glucocorticoids, or glucocorticoids alone, although significant differences may emerge as more data accrue. (Funded by the European Union's Horizon 2020 Program and others; BATS ISRCTN number, ISRCTN69546370.).

Published
2021

27. Mid-infrared interference coatings with excess optical loss below 10 ppm

Author

Winkler, G., primary, Perner, L. W., additional, Truong, G.-W., additional, Zhao, G., additional, Bachmann, D., additional, Mayer, A. S., additional, Fellinger, J., additional, Follman, D., additional, Heu, P., additional, Deutsch, C., additional, Bailey, D. M., additional, Peelaers, H., additional, Puchegger, S., additional, Fleisher, A. J., additional, Cole, G. D., additional, and Heckl, O. H., additional

Published
2021
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29. Cardiorespiratory fitness fails to predict short-term postoperative mortality in patients undergoing elective open surgery for abdominal aortic aneurysm

Author

Bailey, D. M., Rose, G. A., Berg, R. M. G., Davies, R. G., Appadurai, I. R., Lewis, M. H., Williams, I. M., Bailey, D. M., Rose, G. A., Berg, R. M. G., Davies, R. G., Appadurai, I. R., Lewis, M. H., and Williams, I. M.

Abstract

INTRODUCTION Preoperative cardiopulmonary exercise testing aids surgical risk stratification and is an established predictor of mid- to long-term survival in patients undergoing elective open abdominal aortic aneurysm repair. Whether cardiopulmonary exercise testing also predicts 30-day mortality in this population remains to be established.MATERIALS AND METHODS Data for 109 patients (mean age 72 years) who underwent cardiopulmonary exercise testing to assess risk for surgical abdominal aortic aneurysm repair was analysed. Patients were classified according to cardiopulmonary fitness as fit (peak oxygen uptake >= 15ml O-2.kg(-l).min(-1)) or unfit (peak oxygen uptake less than 15ml O-2.kg(-l).min(-1)) and further stratified according to clamp position (infrarenal or suprarenal). Between-group postoperative outcomes were compared for in-hospital 30-day mortality, postoperative morbidity scale scores (day 5) and hospital length of stay.RESULTS Seventy-nine patients underwent open surgery and 30 patients were treated conservatively. No deaths were recorded at 30 days post-surgery. Unfit patients with infrarenal clamping exhibited higher postoperative morbidity scale scores (64% vs 26%) and longer length of stay (four days) than fit patients (p < 0.05). Conversely, with suprarenal clamping, postoperative morbidity scale scores were similar and length of stay longer (three days) in fit compared with unfit patients (p < 0.05).DISCUSSION AND CONCLUSION Preoperative fitness level defined by peak oxygen uptake failed to identify patients at risk of 30-day mortality when undergoing elective abdominal aortic aneurysm repair. Postoperative morbidity and length of stay in patients with suprarenal clamping was high independent of cardiopulmonary fitness. These findings suggest that cardiopulmonary exercise testing may be a useful predictor of complications following infrarenal rather than suprarenal clamping but may not be a good predictor of 30-da

Published
2020

37. National scientific medical meeting 1997 abstracts

Author

Willison, H. J., Lastovica, A. J., Prendergast, M. M., Moran, A. P., Walsh, C., Flitcroft, I., Eustace, P., McMahon, C., Smith, J., Smith, O. P., Lakshmandass, G., Taylor, M. R. H., Holland, C. V., Cox, D., Good, B., Kearns, G. M., Gaffney, P., Shark, K., Frauenshuh, M., Ortmann, W., Messner, R., King, R., Rich, S., Behrens, T., Mahmud, N., Molloy, A., McPartlin, J., Scott, J. M., Weir, D. G., Walsh, K. M., Thorburn, D., Mills, P., Morris, A. J., Good, T., Cameron, S., McCruden, E. A. B., Bennett, M. W., O’Connell, J., Brady, C., Roche, D., Collins, J. K., Shanahan, F., O’Sullivant, G. C., Henry, M., Koston, S., McMahon, K., MacNee, W., FitzGerald, M. X., O’Connor, C. M., McGonagle, D., Gibbon, W., O’Connor, P., Emery, P., Murphy, M., Watson, R., Casey, E., Naidu, E., Murphy, M., Watson, R., Barnes, L., McCann, S., Murphy, M., Watson, R., Barnes, L., Sweeney, E., Barrett, E. J., Graham, H., Cunningham, R. T., Johnston, C. F., Curry, W. J., Buchanan, K. D., Courtney, C. H., McAllister, A. S., McCance, D. R., Hadden, D. R., Bell, P. M., Leslie, H., Sheridan, B., Atkinson, A. B., Kilbane, M. T., Smith, D. F., Murray, M. J., Shering, S. G., McDermott, E. W. M., O’Higgins, N. J., Smyth, P. P. A., McEneny, J., Trimble, E. R., Young, I. S., Sharpe, P., Mercer, C., McMaster, D., Young, I. S., Evans, A. E., Young, I. S., Cundick, J., Hasselwander, O., McMaster, D., McGeough, J., Savage, D., Maxwell, A. P., Evans, A. E., Kee, F., Larkin, C. J., Watson, R. G. P., Johnston, C., Ardill, J. E. S., Buchanan, K. D., McNamara, D. A., Walsh, T. N., Bouchier-Hayes, D. J., Madden, C., Timon, C., Gardiner, N., Lawler, M., O’Riordan, J., Duggan, C., McCann, S. R., Gowing, H., Braakman, E., Lawler, M., Byrne, C., Martens, A. C. M., Hagenbeek, A., McCann, S. R., Kinsella, N., Cusack, S., Lawler, M., Baker, H., White, B., Smith, O. P., Lawler, M., Gardiner, N., Molloy, K., Gowing, H., Wogan, A., McCann, S. R., McElwaine, S., Lawler, M., Hollywood, D., McCann, S. R., Mcmahon, C., Merry, C., Ryan, M., Smith, O., Mulcahy, F. M., Murphy, C., Briones, J., Gardiner, N., McCann, S. R., Lawler, M., White, B., Lawler, M., Cusack, S., Kinsella, N., Smith, O. P., Lavin, P., McCaffrey, M., Gillen, P., White, B., Smith, O. P., Thompson, L., Lalloz, M., Layton, M., Barnes, L., Corish, C., Kennedy, N. P., Flood, P., Mulligan, S., McNamara, E., Kennedy, N. P., Flood, P., Mathias, P. M., Ball, E., Duiculescu, D., Calistru, P., O’Gorman, N., Kennedy, N. P., Abuzakouk, M., Feighery, C., Brannigan, M., Pender, S., Keeling, F., Varghese, J., Lee, M., Colreavy, M., Gaffney, R., Hone, S., Herzig, M., Walsh, M., Dolan, C., Wogan, A., Lawler, M., McCann, S. R., Hollywood, D., Donovan, D., Harmey, J., Bouchier-Hayes, D. J., Haverty, A., Wang, J. H., Harmey, J. H., Redmond, H. P., Bouchier-Hayes, D. J., McGreal, G., Shering, S. G., Moriarty, M. J., Shortt, A., Kilbane, M. T., Smith, D. F., McDermott, E. W. M., O’Higgins, N. J., Smyth, P. P. A., McNamara, D. A., Harmey, J., Wang, J. H., Donovan, D., Walsh, T. N., Bouchier-Hayes, D. J., Kay, E., Pidgeon, G., Harmey, J., McNamara, D. A., Bouchier-Hayes, D. J., Dunne, P., Lambkin, H., Russell, J. M., O’Neill, A. J., Dunne, B. M., O’Donovan, M., Lawler, M., Gaffney, E. F., Gillan, J. E., Cotter, T. G., Horan, J., Jones, D., Biswas, S. K., Mulkerrin, E. C., Brady, H., O’Donnell, J., Neary, J., Healy, E., Watson, A., Keogh, B., Ryan, M., Cassidy, C., Ward, S., Stokes, E., Keoghan, F., Barrett, A., O’Connell, P., Ryall, N., O’Connell, P. A., Jenkinson, A., O’Brien, T., O’Connell, P. G., Harrison, R., Barrett, T., Bailey, D. M. D., Butler, A., Barton, D. E., Byrne, C., McElwaine, S., McCann, S. R., Lawler, M., Cusack, S., Lawler, M., White, B., Smith, O. P., Daly, G., Gill, M., Heron, S., Hawi, Z., Fitzgerald, M., Hawi, Z., Mynett-Johnson, L., Shiels, D., Kendler, K., McKeon, P., Gill, M., Straub, R., Walsh, D., Ryan, F., Barton, D. 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Published
1998
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49. An assessment of juvenile Atlantic cod Gadus morhua distribution and growth using diver operated stereo‐video surveys

Author

Elliott, S. A. M., Ahti, P. A., Heath, M. R., Turrell, W. R., and Bailey, D. M.

Subjects
stereo‐video cameras, Behavior, Animal, marine protected area, Regular Papers, Fisheries, Video Recording, habitat, coastal, scuba, Gadus morhua, Scotland, Surveys and Questionnaires, Regular Paper, Animals, Body Size, Animal Distribution, Ecosystem
Abstract

Stereo‐video scuba transects were conducted during daylight hours from June to September 2013 within a proposed marine protected area (MPA) in the Firth of Clyde, west of Scotland. More juvenile Atlantic cod Gadus morhua of fork length (L F) range 6–11 cm were observed in substrata containing mixed gravel, including maerl, than in boulder‐cobble substrata with high algal cover, or sand with low density seagrass. Community composition was significantly different between substratum types. A decrease in G. morhua abundance was observed over the period of data collection. Over time, mean and variance in G. morhua L F increased, indicating multiple recruitment events. Protecting mixed gravel substrata could be a beneficial management measure to support the survival and recruitment of juvenile G. morhua; other substrata might be important at night given their diel migratory behaviour. Stereo‐video cameras provide a useful non‐destructive fisheries‐independent method to monitor species abundance and length measurements.

Published
2016

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