Michael Lowry

Michael Lowry
New South Wales Department of Primary Industries · Fishing and Aquaculture (Fisheries NSW)

PhD

About

53
Publications
17,743
Reads
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1,374
Citations
Introduction
I am currently employed as a Senior Research Scientist with NSW Department of Primary Industries. As Research Leader of the Fisheries Resource Assessment group I manage a number of research projects related to fisheries resource assessment and enhancement . Previous research projects have involved a broad variety of work in both marine and freshwater systems interacting with both recreational and commercial sectors.
Additional affiliations
November 1997 - present
New South Wales Department of Primary Industries
Position
  • Research Leader (Fisheries Resource Assessment)
November 1997 - present
NSW DPI
Position
  • Research Leader (Fisheries Resource Assessment)
January 1994 - January 1998
UNSW Sydney
Position
  • PhD Student

Publications

Publications (53)
Article
Full-text available
Red morwong (Cheilodactylus fuscus; Cheilodactylidae: Perciformes), are large temperate rocky reef fish that are patchily distributed in local aggregations of 3 to >100 fish. The home ranges and aggregating behaviour of red morwong were investigated using external tags (n = 114, over 35 mo) and ultrasonic transmitters (n = 9 over 20 d) at coastal a...
Article
Full-text available
The NSW department of Primary Industries is responsible for the deployment, maintenance, and monitoring of a series of 15 fish aggregating devices (FADs) off the coast of New South Wales (NSW) Australia. The program is designed to provide alternative fishing opportunities for recreational anglers. The objectives of this study were to: (A) examine t...
Article
Full-text available
If the primary goal of artificial reef construction is the creation of additional reef habitat that is comparable to adjacent natural rocky-reef, then performance should be evaluated using simultaneous comparisons with adjacent natural habitats. Using baited remote underwater video (BRUV) fish assemblages on purpose-built estuarine artificial reefs...
Article
Estuaries contain mosaic habitats which support fish across different life stages. Artificial reefs represent a form of habitat enhancement which can provide additional structure for fishes and improve fishing opportunities, but the role of artificial reefs within the broader estuarine seascape has not been extensively studied. We used a VEMCO Posi...
Chapter
Full-text available
With over 70 contributors from 30 agencies, the NESP Marine Biodiversity Hub has developed a suite of field manuals to describe a nationally consistent and defensible approach to marine data acquisition. This manual relates to pelagic (mid-water) BRUVS, i.e. gear designed to acquire digital video imagery of macro-organisms living in the ocean’s w...
Book
Full-text available
Australia has one of the world’s largest marine estates that includes many vulnerable habitats and a high biodiversity, with many endemic species crossing a wide latitudinal range. The marine estate is used by a variety of industries including fishing, oil & gas, and shipping, in addition to traditional, cultural, scientific and recreational uses....
Article
Responsible fisheries enhancement should include comprehensive monitoring programs to detect ecological effects of fish releases and support adaptive management. Competition for food and shelter is one such impact, and density-dependent effects may occur if release numbers are above levels that the ecosystem can support. Herein we present a novel a...
Article
Research programmes that monitor and evaluate the impact of stocking activities are essential to quantify effects of stocking and provide information for adaptive management of future releases. The consumer communities in two estuaries stocked with 5.8 million post-larvae eastern king prawn Penaeus plebejus (Hess) were monitored, both before and af...
Article
Fisheries enhancement initiatives are a potentially useful tool for managers to supplement traditional approaches. Habitat‐based enhancements often deploy artificial reefs with the aim to increase the available structure to augment local production, yet current assessment approaches make it difficult to assess whether these reefs achieve pre‐deploy...
Article
A goal of designed artificial reefs (ARs) is to enhance fish abundance, species diversity and fishing opportunities by providing food and refuge for fish. Quantifying the contribution of ARs to coastal ecosystems and fisheries productivity requires an understanding of fish presence at the structure and connectivity with surrounding habitats. In the...
Article
Designed artificial reefs (ARs) are deployed for various purposes including the enhancement of recreational fisheries. The ability to assess recreational harvest is important for determining the effectiveness of AR deployments. Harvest estimation at AR fisheries pose many logistical and budgetary challenges. We present a pragmatic approach to estim...
Article
Mulloway (also known as Japanese Meagre) Argyrosomus japonicus is an important recreational species targeted by anglers across southern Australia. This marine-spawned species recruits into estuaries as juveniles; however, there is some evidence for potential recruitment limitation arising from variable freshwater flows, which are characteristic of...
Article
Full-text available
Artificial reefs are a widely used tool aimed at fishery enhancement, and measuring the scale at which fish assemblages associate with these artificial habitat patches can aid reef design and spatial arrangement. The present study used rapidly deployed underwater video (drop cameras) to determine the magnitude and spatial scale of associations betw...
Article
The present study investigated the long-term (>2 years) site fidelity, residency and movement patterns of Acanthopagrus australis (Sparidae) at artificial (AR) and natural reef (NR) sites. Acoustic telemetry was used to assess movement patterns of 39 fish released at NR and AR locations and other habitat types within the study area. Detection perio...
Article
Fish translocation is a common method of conservation and fisheries enhancement. Monitoring post-translocation movements and migration provides useful information to inform translocation strategies. Three species of large-bodied fish (Yellowfin Bream Acanthopagrus australis, Luderick Girella tricuspidata, and Tarwhine Rhabdosargus sarba) impounded...
Article
Artificial reefs provide shelter and can be an important source of food for fish depending on the epibenthic community on the structure. The growth and diversity of this community is influenced by the substratum material and the surface orientation of the reef. Settlement plates of four materials (Perspex, sandstone, wood and steel) were deployed i...
Article
It was recently demonstrated that oil platforms are among the most productive marine fish habitats (Claisse et al. in Proc Natl Acad Sci USA 111:15462–15467, 2014). Designed artificial reef systems are similar, albeit smaller, modified habitats designed to accommodate fish assemblages. We compared fish production at a large designed reef to reporte...
Article
Artificial reefs now form part of an integrated approach to enhance fisheries around the world. A responsible approach to artificial reef deployment calls for clear, well defined goals prior to any reef being placed in the field, followed by subsequent monitoring to assess whether these goals are being achieved. In this study, to evaluate if an art...
Article
Full-text available
In partial protection management areas such as Recreational Fishing Havens (RFHs) where commercial fishing is prohibited there are fewer sampling methods available for quantifying the relative abundance of species. Consequently, a framework is needed in such areas to decide whether sampling should be based on: (1) fishery-independent techniques; (2...
Article
Recreational fishing effort was quantified at a 700 m3 steel artificial reef (AR) off coastal Sydney with a shore-based camera (06:00–18:00) over a two-year period. Stratified random sampling was used to select days for analysis of fishing effort from digital images. Fishing effort estimates derived from the digital images were adjusted to account...
Data
Figure S1 Evaluation of the impact of attraction for reef fish, with maximum CPUE occuring at 70% of the maximum fish density before artficial reef deployment. Figure S2 Evaluation of the impact of attraction for reef‐associated pelagic fish, with maximum CPUE occuring at 70% of the maximum fish density before artficial reef deployment.
Article
Full-text available
The debate on whether artificial reefs produce new fish or simply attract existing fish biomass continues due to the difficulty in distinguishing these processes, and there remains considerable doubt as to whether artificial reefs are a harmful form of habitat modification. The harm typically associated with attraction is that fish will be easier t...
Article
Full-text available
Artificial reefs are a popular fisheries management tool, but the effect of these reefs on the abundance of fish in the surrounding pelagic environment is uncertain. Pelagic baited remote underwater video (PBRUV) was used to observe the fish assemblage surrounding an offshore artificial reef (OAR), near Sydney, Australia. PBRUVs were deployed at th...
Article
Entrainment and impingement of two non‐salmonid species susceptible to entrainment at irrigation diversions, silver perch, Bidyanus bidyanus (Mitchell), and golden perch, Macquaria ambigua (Richardson), were examined at an experimental intake screen in a laboratory flume under a range of velocities and light levels. The presence of an intake screen...
Article
Full-text available
Fish screens can help prevent the entrainment or injury of fish at irrigation diversions, but only when designed appropriately. Design criteria cannot simply be transferred between sites or pump systems and need to be developed using an evidence-based approach with the needs of local species in mind. Laboratory testing is typically used to quantify...
Data
Elative abundance (mean maxN ± SEM), total count and frequency (%) for all species in A. Lake Macquarie (LM), B. Botany Bay (BB) and C. St Georges Basin (SGB) by habitat type identified by BRUV002E. (XLS)
Article
Understanding succession of fish communities associated with artificial structures is required to assess the potential of these initiatives as part of fisheries enhancement strategies and determine possible impacts on the broader ecological community. Artificial reef systems constructed in three south-eastern Australian estuaries were monitored ove...
Article
Fish communities associated with a series of artificial reefs deployed in three estuaries in southeastern Australia (151° 34′ E, 33° 7′ S to 150° 37′ E, 35° 8′ S) were surveyed using both Baited Remote Underwater Video (BRUV) and Underwater Visual Census (UVC). Abundance estimates, frequency of observations, and species indicators (richness and div...
Article
Full-text available
Previous studies examining the dynamics of succession on artificial reefs have predominantly focussed on fish communities and largely ignored the role of fouling assemblages in explaining the patterns of community structure associated with artificial reefs. The objective of this study was to record the development of epibiotic assemblages on three...
Article
This paper describes a solid state memory (SSM) video camera system designed for extended deployment as a remote underwater video device with applications for measuring fish abundance and diversity. The video camera was evaluated in a series of lab-based trials to establish performance parameters (power consumption, data accumulation rates and maxi...
Article
Full-text available
Monitoring strategies which adequately represent the entire community associated with artificial structures will enable more informed decisions regarding the broader effects of artificial structures and their role in the management of fisheries resources. Despite the widespread application of a range of in situ visual monitoring methodologies used...
Article
Full-text available
Previous studies examining the dynamics of succession on artificial reefs have predominantly focussed on fish communities and largely ignored the role of fouling assemblages in explaining the patterns of community structure associated with artificial reefs. The objective of this study was to record the development of epibiotic assemblages on three...
Article
Full-text available
Monitoring strategies which adequately represent the entire community associated with artificial structures will enable more informed decisions regarding the broader effects of artificial structures and their role in the management of fisheries resources. Despite the widespread application of a range of in situ visual monitoring methodologies used...
Article
Full-text available
Despite the long history of the development of artificial structures in NSW estuaries there are no studies that provide any comprehensive scientific evaluation of post-deployment goals. We assessed the effectiveness of estuarine artificial reefs as a fisheries enhancement initiative; described the diversity and abundance of species associated with...
Article
Full-text available
The present study investigated the reproductive biology of blue mackerel (Scomber australasicus) off southern and eastern Australia and assessed the suitability of the Daily Egg Production Method (DEPM) for future stock assessment. This analysis revealed that S. australasicus is a serial spawner with asynchronous oocyte development and indeterminat...
Article
The notorious jaws of the white shark Carcharodon carcharias are widely feared, yet poorly understood. Neither its bite force, nor how such force might be delivered using relatively elastic cartilaginous jaws, have been quantified or described. We have digitally reconstructed the jaws of a white shark to estimate maximum bite force and examine rela...
Article
Questions surrounding the biology of large fossil predators that differ markedly from living forms have long intrigued palaeobiologists. Among such taxa few have excited more interest than sabertooth cats, whose distinctive hypertrophied canines are suggestive of killing behaviors and feeding ecologies that may have departed widely from those of ex...
Article
Catch-per-unit-of-effort (CPUE) data were collected from anglers participating in gamefish tournaments off the coast of New South Wales, Australia, over nine consecutive years (1994–2003). Mean catch rates for 381 tournament days were aggregated by “lunar phase day” in order to analyse relationships between CPUE and lunar phase for eight primary ga...
Article
Information from separate angler surveys was analysed to examine the relationships between bait use and catch composition for both the New South Wales (NSW) trailer-boat fishery and the NSW gamefish-tournament fishery. Anglers in both fisheries were categorised as either “baitfish harvesters”, i.e. anglers who collected baitfish as part of their fi...
Article
1.Mortality of air-breathing vertebrates has been recognized for some time as a significant risk in Australian inland fisheries. There has often been conflict between the desires of fishers to maximize catches of their target species and the implementation of effective methods to reduce nontarget bycatch.2.Two trials were conducted to evaluate the...
Article
Full-text available
Strip transect surveys of the large temperate rocky reef fish Cheilodactylus fuscus revealed size- and sex-structured populations across seasons and 3 conditions of wave exposure, from an estuary to the open coast. Large, mostly male, fish (>30 cm fork length) predominated on the open coast and in deeper water (>10 m), while smaller fish predominat...
Article
Full-text available
by-catch of platypuses (Ornithorhynchus anatinus) in commercial and recreational fishing gear in New South Wales. Proceedings of the Linnean Society of New South Wales 125, 259-272. The problem of platypus by-catch mortality in the eel, yabby and carp trap fisheries in New South Wales is reviewed, and the results of several experiments to determine...
Article
Full-text available
The east coast Australian gamefish fishery is a diverse, multi-species fishery that targets billfish, sharks, tuna and other pelagic fish along the east Australian seaboard. A Gamefish Tournament Monitoring Program (GTMP) was undertaken, and 39021 angler trips from 1996 to 2000 were analysed. The program reports on trends in fishing effort, catch r...
Article
To provide information on age and growth of red morwong (Cheilodactylus fuscus Castelnau), populations were sampled from eight locations over a 2.5‐year period with the majority of fish sampled from six sites within Sydney Harbour, New South Wales, Australia. Transverse thin sections of otoliths taken from a total of 347 fish were used to determine...
Article
The red morwong, Cheilodactylus fuscus Castelnau (Pisces : Cheilodactylidae), is a conspicuous fish on the rocky reefs of the eastern Australian coast. Visual determination of the sex of individuals in the field is necessary to remove sex bias in home-range and associated bioaccumulation studies. A sample of 61 fish (30-50 cm fork length) was colle...
Article
Full-text available
The shortbelly rockfish, Sebastes jordani, is one of the most abundant rockfish species in the California Current, and is a key forage species for many fish, birds, and marine mammals. This species has not been the target of commercial fisheries, and consequently catch data are lim - ited. Nevertheless, available evidence suggests that the populati...

Projects

Project (1)
Archived project
The broad objective of this study was to examine the site presence, connectivity and general movement patterns of three benthic species, the Fiddler Ray (Trygonorrhina fasciata), eastern Bluespotted Flathead (Platycephalus caeruleopunctatus), and Port Jackson Shark (Heterodontus portusjacksoni), in association with a coastal designed artificial reef off Sydney, NSW, Australia. The specific aims of this study were to: 1) determine the long- and short-term presence of three benthic species at a designed artificial reef and at nearby natural reefs using acoustic telemetry; 2) determine the connectivity between the designed artificial reef and natural reefs for these species, and 3) use this information to infer the effect of this designed artificial reef on the local distribution of these species.