William Cheung | University of British Columbia (original) (raw)
William is an Assistant Professor at the UBC Fisheries Centre since 2011, and is head of the Changing Ocean Research Unit (CORU). William obtained a BSc. (Biology) in 1998, and subsequently a M.Phil. in 2001 from the University of Hong Kong. After working in WWF Hong Kong for two years, he moved to Vancouver and completed his PhD in Resource Management and Environmental Studies in the UBC Fisheries Centre in 2007. He then worked as a postdoctoral fellow in the Sea Around Us project for two years. From 2009 to 2011, he was Lecturer in Marine Ecosystem Services in the School of Environmental Sciences, University of East Anglia in the UK.
Currently, his main research area is on assessing impacts of fishing and climate change on marine ecosystems and their goods and services, and studying ways to reconcile trade-offs in their management. Specifically, he develops empirical and numerical simulation models to examine the impacts of climate change on marine biodiversity and fisheries, globally and in various regional seas. He applies interdisciplinary approaches to evaluate the trade-offs between ecological, economic and social objectives in managing coastal social-ecological systems. Moreover, his research involves the development and application of original approaches to study historical changes in fish stocks and ecosystems. He works on various interdisciplinary research projects with global collaboration networks in the U.K., China, Australia, Africa, USA and Canada. He has been a member of the IUCN Groupers and Wrasses Species Specialist Group since 2005 and serves on the editorial board of Fish and Fisheries and International Journal of Sustainable Society.
Address: Fisheries Centre
2202 Main Mall
The University of British Columbia
Vancouver, B.C., Canada
V6T 1Z4
less
Uploads
Papers by William Cheung
Vlaams Instituut voor de Zee. VLIZ. Informatie over marien en kustgebonden onderzoek & beleid in ... more Vlaams Instituut voor de Zee. VLIZ. Informatie over marien en kustgebonden onderzoek & beleid in Vlaanderen.
Abstract Knowledge of recruitment patterns is a requisite for modern fisheries management. These ... more Abstract Knowledge of recruitment patterns is a requisite for modern fisheries management. These patterns can range in complexity from a single pulse of identically sized and aged prawns, which is often assumed in fisheries models, to continuous recruitment by prawns of several ages. Existing techniques used to identify recruitment patterns range from the ad hoc use of size limits to more complex methods that examine changes in length-frequency modes through time.
A second big-eye, P. macracanthus, spawned twice a year in May-June and September, had growth par... more A second big-eye, P. macracanthus, spawned twice a year in May-June and September, had growth parameters of k= 0.7 and L,= 32, and population parameters of Z= 2.0, F= 0.7, and E= 0, 34. The maximum potential yield was 0.13 kg/recruit when F= 5.8. A marked reduction in fishing mortality occurred for both species between 1965 and 1966, coinciding with the onset of the Chinese Cultural Revolution.
We present an approach to the analysis of crustacean egg production ogives with emphasis on detec... more We present an approach to the analysis of crustacean egg production ogives with emphasis on detecting seasonal trends. The relationship between the proportion of gravid females (by size) and season is a prerequisite to the estimation of egg production potentials of populations. The basic method consists of relating, for each sample, the proportion of berried females with their size through a three-parameter logistic function where the asymptote may be less than 1.
Climate change will impact the pattern of marine biodiversity through, among other things, change... more Climate change will impact the pattern of marine biodiversity through, among other things, changes in species distribution. So far, however, global studies on climate change impacts on ocean biodiversity have been scarce to non-existant. Here, we show that climate change impact can be analyzed by projecting the distributional ranges of a large sample of exploited marine fish and invertebrates to the year 2050, by using a recently developed dynamic bioclimate envelope model.
Metazoan parasites of whitefish Coregonus clupeaformis and cisco C. artedii from Southern Indian ... more Metazoan parasites of whitefish Coregonus clupeaformis and cisco C. artedii from Southern Indian Lake, Manitoba were studied to reveal: species composition, differences with host age, sex, and location and season of capture. Whitefish hosted 19 species, 18 of which were also in cisco with generally lower intensity levels. Parasites exhibited definite patterns of abundance with host age and season, the primary causes being dietary and behavioural. No differences in parasite abundance existed between host sexes.
Abstract Daytime catches of juvenile penaeid shrimp from two modified sledges (providing stimulat... more Abstract Daytime catches of juvenile penaeid shrimp from two modified sledges (providing stimulation by water-jet or electric current) were compared with catches from a conventional sledge (or beam trawl) used at night. The results indicate that the daytime use of a water-jet sledge is a suitable alternative when night-time sampling is precluded.
To cite this article: Watson, Reg A. Reconciliation, Tasmanian Style: The Neglect of Risdon Cove ... more To cite this article: Watson, Reg A. Reconciliation, Tasmanian Style: The Neglect of Risdon Cove [online]. Quadrant, Vol. 52, No. 3, Mar 2008: 93-94. Availability: <http://search.informit.com.au /documentSummary;dn=062453015081373;res=IELLCC> ISSN: 0033-5002. [cited 17 Apr 12].
Vlaams Instituut voor de Zee. VLIZ. Informatie over marien en kustgebonden onderzoek & beleid in ... more Vlaams Instituut voor de Zee. VLIZ. Informatie over marien en kustgebonden onderzoek & beleid in Vlaanderen.
Abstract Knowledge of recruitment patterns is a requisite for modern fisheries management. These ... more Abstract Knowledge of recruitment patterns is a requisite for modern fisheries management. These patterns can range in complexity from a single pulse of identically sized and aged prawns, which is often assumed in fisheries models, to continuous recruitment by prawns of several ages. Existing techniques used to identify recruitment patterns range from the ad hoc use of size limits to more complex methods that examine changes in length-frequency modes through time.
A second big-eye, P. macracanthus, spawned twice a year in May-June and September, had growth par... more A second big-eye, P. macracanthus, spawned twice a year in May-June and September, had growth parameters of k= 0.7 and L,= 32, and population parameters of Z= 2.0, F= 0.7, and E= 0, 34. The maximum potential yield was 0.13 kg/recruit when F= 5.8. A marked reduction in fishing mortality occurred for both species between 1965 and 1966, coinciding with the onset of the Chinese Cultural Revolution.
We present an approach to the analysis of crustacean egg production ogives with emphasis on detec... more We present an approach to the analysis of crustacean egg production ogives with emphasis on detecting seasonal trends. The relationship between the proportion of gravid females (by size) and season is a prerequisite to the estimation of egg production potentials of populations. The basic method consists of relating, for each sample, the proportion of berried females with their size through a three-parameter logistic function where the asymptote may be less than 1.
Climate change will impact the pattern of marine biodiversity through, among other things, change... more Climate change will impact the pattern of marine biodiversity through, among other things, changes in species distribution. So far, however, global studies on climate change impacts on ocean biodiversity have been scarce to non-existant. Here, we show that climate change impact can be analyzed by projecting the distributional ranges of a large sample of exploited marine fish and invertebrates to the year 2050, by using a recently developed dynamic bioclimate envelope model.
Metazoan parasites of whitefish Coregonus clupeaformis and cisco C. artedii from Southern Indian ... more Metazoan parasites of whitefish Coregonus clupeaformis and cisco C. artedii from Southern Indian Lake, Manitoba were studied to reveal: species composition, differences with host age, sex, and location and season of capture. Whitefish hosted 19 species, 18 of which were also in cisco with generally lower intensity levels. Parasites exhibited definite patterns of abundance with host age and season, the primary causes being dietary and behavioural. No differences in parasite abundance existed between host sexes.
Abstract Daytime catches of juvenile penaeid shrimp from two modified sledges (providing stimulat... more Abstract Daytime catches of juvenile penaeid shrimp from two modified sledges (providing stimulation by water-jet or electric current) were compared with catches from a conventional sledge (or beam trawl) used at night. The results indicate that the daytime use of a water-jet sledge is a suitable alternative when night-time sampling is precluded.
To cite this article: Watson, Reg A. Reconciliation, Tasmanian Style: The Neglect of Risdon Cove ... more To cite this article: Watson, Reg A. Reconciliation, Tasmanian Style: The Neglect of Risdon Cove [online]. Quadrant, Vol. 52, No. 3, Mar 2008: 93-94. Availability: <http://search.informit.com.au /documentSummary;dn=062453015081373;res=IELLCC> ISSN: 0033-5002. [cited 17 Apr 12].