Search

Your search keyword '"Fairclough, David V."' showing total 34 results
Start Over Author "Fairclough, David V."
34 results on '"Fairclough, David V."'

7. Evaluation of spatiotemporal imputations for fishing catch rate standardization

Author

Marriott, Ross J., Turlach, Berwin A., Murray, Kevin, and Fairclough, David V.

Subjects
Fisheries -- Analysis -- Standards, Linear models (Statistics) -- Usage, Earth sciences
Abstract

As commercial fishing activity shifts to target different grounds over time, spatial gaps can be created in catch rate data, leading to biases in derived indices of fish abundance. Imputation has been shown to reduce such biases. In this study, the relative performance of several imputation methods was assessed using simulated catch rate data sets. Simulations were carried out for three fish stocks targeted by a commercial hook-and-line fishery off the southwestern coast of Australia: snapper (Chrysophrys auratus), West Australian dhufish (Glaucosoma hebraicum), and baldchin groper (Choerodon rubescens). For high-growth scenarios, the mean squared errors (MSEs) of geometric and linear imputations were lower, indicating higher accuracy and precision than that for base method (constant value) imputations. For low-growth scenarios, the lowest MSEs were achieved for base method imputations. However, for the final standardized and imputed abundance indices, the base method index consistently demonstrated the largest biases. Our results demonstrate the importance of selecting an appropriate imputation method when standardizing catch rates from a commercial fishery that has changed its spatial pattern of fishing over time. Quand des activites de peche commerciale changent dans le temps pour cibler differents lieux de peche, des lacunes spatiales dans les donnees sur les taux de prises peuvent en resulter et mener a des biais dans les indices d'abondance de poissons en decoulant. Il a ete demontre que l'imputation reduit ce type de biais. Dans la presente etude, la performance relative de plusieurs methodes d'imputation a ete evaluee en utilisant des ensembles de donnees sur les taux de prises simules. Des simulations ont ete realisees pour trois stocks de poissons vises par une peche a la ligne au large de la cote sud -ouest de l'Australie, le vivaneau (Chrysophrys auratus), le merou geant (Glaucosoma hebraicum) et le labre (Choerodon rubescens). Pour les scenarios de forte croissance, les erreurs quadratiques moyennes (EQMs) des imputations geometriques et lineaires etaient plus faibles, indiquant de plus grandes exactitude et precision, que celles des imputations par la methode de base (valeur constante). Pour les scenarios de faible croissance, les EQM les plus faibles ont ete obtenues pour les imputations par la methode de base. Toutefois, pour les indices d'abondance normalisee et imputee finaux, l'indice de la methode de base etait uniformement caracterise par les plus grands biais. Les resultats demontrent l'importance du choix d'une methode d'imputation convenable pour la normalisation des taux de prises d'une peche commerciale dont la repartition spatiale a change au fil du temps. [Traduit par la Redaction], Introduction Conventional statistical methods, including generalized linear models (GLMs), are routinely used to standardize commercial catch per unit effort (CPUE) data into indices of relative fish abundance for stock assessment. [...]

Published
2017
Full Text
View/download PDF

12. The BRUVs workshop – An Australia-wide synthesis of baited remote underwater video data to answer broad-scale ecological questions about fish, sharks and rays

Author

Harvey, Euan S., McLean, Dianne L., Goetze, Jordan S., Saunders, Benjamin J., Langlois, Tim J., Monk, Jacquomo, Barrett, Neville, Wilson, Shaun K., Holmes, Thomas H., Ierodiaconou, Daniel, Jordan, Alan R., Meekan, Mark G., Malcolm, Hamish A., Heupel, Michelle R., Harasti, David, Huveneers, Charlie, Knott, Nathan A., Fairclough, David V., Currey-Randall, Leanne M., Travers, Michael J., Radford, Ben T., Rees, Matthew J., Speed, Conrad W., Wakefield, Corey B., Cappo, Mike, and Newman, Stephen J.

Published
2021
Full Text
View/download PDF

13. Effects of human footprint and biophysical factors on the body‐size structure of fished marine species

Author

Bosch, Nestor E., primary, Monk, Jacquomo, additional, Goetze, Jordan, additional, Wilson, Shaun, additional, Babcock, Russell C., additional, Barrett, Neville, additional, Clough, Jock, additional, Currey‐Randall, Leanne M., additional, Fairclough, David V., additional, Fisher, Rebecca, additional, Gibbons, Brooke A., additional, Harasti, David, additional, Harvey, Euan S., additional, Heupel, Michelle R., additional, Hicks, Jamie L., additional, Holmes, Thomas H., additional, Huveneers, Charlie, additional, Ierodiaconou, Daniel, additional, Jordan, Alan, additional, Knott, Nathan A., additional, Malcolm, Hamish A., additional, McLean, Dianne, additional, Meekan, Mark, additional, Newman, Stephen J., additional, Radford, Ben, additional, Rees, Matthew J., additional, Saunders, Benjamin J., additional, Speed, Conrad W., additional, Travers, Michael J., additional, Wakefield, Corey B., additional, Wernberg, Thomas, additional, and Langlois, Tim J., additional

Published
2021
Full Text
View/download PDF

14. Increased connectivity and depth improve the effectiveness of marine reserves

Author

Goetze, Jordan S., primary, Wilson, Shaun, additional, Radford, Ben, additional, Fisher, Rebecca, additional, Langlois, Tim J., additional, Monk, Jacquomo, additional, Knott, Nathan A., additional, Malcolm, Hamish, additional, Currey‐Randall, Leanne M., additional, Ierodiaconou, Daniel, additional, Harasti, David, additional, Barrett, Neville, additional, Babcock, Russell C., additional, Bosch, Nestor E., additional, Brock, Danny, additional, Claudet, Joachim, additional, Clough, Jock, additional, Fairclough, David V., additional, Heupel, Michelle R., additional, Holmes, Thomas H., additional, Huveneers, Charlie, additional, Jordan, Alan R., additional, McLean, Dianne, additional, Meekan, Mark, additional, Miller, David, additional, Newman, Stephen J., additional, Rees, Matthew J., additional, Roberts, Kelsey E., additional, Saunders, Benjamin J., additional, Speed, Conrad W., additional, Travers, Michael J., additional, Treml, Eric, additional, Whitmarsh, Sasha K., additional, Wakefield, Corey B., additional, and Harvey, Euan S., additional

Published
2021
Full Text
View/download PDF

16. Effects of human footprint and biophysical factors on the body‐size structure of fished marine species.

Author

Bosch, Nestor E., Monk, Jacquomo, Goetze, Jordan, Wilson, Shaun, Babcock, Russell C., Barrett, Neville, Clough, Jock, Currey‐Randall, Leanne M., Fairclough, David V., Fisher, Rebecca, Gibbons, Brooke A., Harasti, David, Harvey, Euan S., Heupel, Michelle R., Hicks, Jamie L., Holmes, Thomas H., Huveneers, Charlie, Ierodiaconou, Daniel, Jordan, Alan, and Knott, Nathan A.

Subjects
FISH populations, FACTOR structure, BYCATCHES, OCEAN temperature, MARINE parks & reserves, SIZE of fishes, FISH declines, FISHERIES
Abstract

Copyright of Conservation Biology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2022
Full Text
View/download PDF

17. A field and video annotation guide for baited remote underwater stereo‐video surveys of demersal fish assemblages

Author

Langlois, Tim, primary, Goetze, Jordan, additional, Bond, Todd, additional, Monk, Jacquomo, additional, Abesamis, Rene A., additional, Asher, Jacob, additional, Barrett, Neville, additional, Bernard, Anthony T. F., additional, Bouchet, Phil J., additional, Birt, Matthew J., additional, Cappo, Mike, additional, Currey‐Randall, Leanne M., additional, Driessen, Damon, additional, Fairclough, David V., additional, Fullwood, Laura A. F., additional, Gibbons, Brooke A., additional, Harasti, David, additional, Heupel, Michelle R., additional, Hicks, Jamie, additional, Holmes, Thomas H., additional, Huveneers, Charlie, additional, Ierodiaconou, Daniel, additional, Jordan, Alan, additional, Knott, Nathan A., additional, Lindfield, Steve, additional, Malcolm, Hamish A., additional, McLean, Dianne, additional, Meekan, Mark, additional, Miller, David, additional, Mitchell, Peter J., additional, Newman, Stephen J., additional, Radford, Ben, additional, Rolim, Fernanda A., additional, Saunders, Benjamin J., additional, Stowar, Marcus, additional, Smith, Adam N. H., additional, Travers, Michael J., additional, Wakefield, Corey B., additional, Whitmarsh, Sasha K., additional, Williams, Joel, additional, and Harvey, Euan S., additional

Published
2020
Full Text
View/download PDF

20. The microbiome of the gastrointestinal tract of a range-shifting marine herbivorous fish

Author

Jones, Jacquelyn, DiBattista, Joseph D, Stat, Michael, Bunce, Michael, Boyce, Mary C, Fairclough, David V, Travers, Michael J, Huggett, Megan J, Jones, Jacquelyn, DiBattista, Joseph D, Stat, Michael, Bunce, Michael, Boyce, Mary C, Fairclough, David V, Travers, Michael J, and Huggett, Megan J

Abstract

Globally, marine species' distributions are being modified due to rising ocean temperatures. Increasing evidence suggests a circum-global pattern of poleward extensions in the distributions of many tropical herbivorous species, including the ecologically important rabbitfish

Published
2018

33. IN SITU CALLS OF THE MARINE PERCIFORM GLAUCOSOMA HEBRAICUM.

Author

Parsons, Miles, Longbottom, Simon, McCauley, Robert, Lewis, Paul, and Fairclough, David V.

Subjects
GLAUCOSOMA hebraicum, AIR bladders in fishes, FISH sounds, FISH behavior, EFFECT of human beings on fishes
Abstract

West Australian dhufish (Glaucosoma hebraicum), a marine perciform, possess a swim bladder which has associated muscles that are used in sound production. Individuals have been recorded producing sounds during capture that may be associated with disturbance from their normal behaviour. To determine whether individuals produce sound during natural behaviour, a passive sea-noise logger was deployed on the seafloor for one month in close proximity to low-relief artificial substrates occupied by G. hebraicum. During this time, both juvenile and sub-adult G. hebraicum were observed within metres of the logger on numerous occasions. At approximately the same time, sounds with characteristics similar to the disturbance calls of G. hebraicum were detected by the logger. Two types of swimbladder generated calls were recorded, one of widely-spaced pulses and the other of pulses in quick succession The maximum received levels and sound exposure levels of the recorded calls were 132 dB re 1 µPa and 121 dB re 1 µPa².s, respectively. Based on previously determined G. hebraicum source levels and time of arrival techniques (direct and surface-reflected ray paths), the vocalising fish were estimated at between 1 and 19.5 m from the hydrophone and thus within the area where they had been observed. This study has provided evidence that juvenile G. hebraicum produce sounds at similar source levels to those generated during human-induced disturbance. This indicates that sound is produced by individuals of this species during normal behaviour, but may or may not be associated with natural sources of disturbance. [ABSTRACT FROM AUTHOR]

Published
2014

34. The microbiome of the gastrointestinal tract of a range-shifting marine herbivorous fish

Author

Jones, Jacquelyn, DiBattista, Joseph D, Stat, Michael, Bunce, Michael, Boyce, Mary C, Fairclough, David V, Travers, Michael J, Huggett, Megan J, Jones, Jacquelyn, DiBattista, Joseph D, Stat, Michael, Bunce, Michael, Boyce, Mary C, Fairclough, David V, Travers, Michael J, and Huggett, Megan J

Abstract

Jones, J., DiBattista, J. D., Stat, M., Bunce, M., Boyce, M. C., Fairclough, D. V., ... & Huggett, M. J. (2018). The microbiome of the gastrointestinal tract of a range-shifting marine herbivorous fish. Frontiers in microbiology, 9. Available here

Catalog

Books, media, physical & digital resources
See catalog results