Search Results - "Heales, D."

Species composition and temporal variation of prawn trawl bycatch in the Joseph Bonaparte Gulf, northwestern Australia by Tonks, M.L., Griffiths, S.P., Heales, D.S., Brewer, D.T., Dell, Q.

“…The Joseph Bonaparte Gulf (JBG) banana prawn subfishery is an important component of Australia's Northern Prawn Fishery (NPF). However, the species composition…”
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Impacts of gold mine waste disposal on a tropical pelagic ecosystem by Brewer, D.T., Morello, E.B., Griffiths, S., Fry, G., Heales, D., Apte, S.C., Venables, W.N., Rothlisberg, P.C., Moeseneder, C., Lansdell, M., Pendrey, R., Coman, F., Strzelecki, J., Jarolimek, C.V., Jung, R.F., Richardson, A.J.

“…► We investigate the impact of gold mine tailings disposal into the sea. ► We use a comparative impact-control approach. ► Similar abundance and diversity of…”
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Distribution of juvenile penaeid prawns in mangrove forests in a tropical Australian estuary, with particular reference to Penaeus merguiensis by VANCE, D. J, HAYWOOD, M. D. E, HEALES, D. S, KENYON, R. A, LONERAGAN, N. R, PENDREY, R. C

“…Several species of prawns, including juveniles of Penaeus merguiensis, will move into mangrove forests when the forests are inundated by flood tides. However,…”
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Impacts of gold mine waste disposal on deepwater fish in a pristine tropical marine system by Brewer, D.T., Milton, D.A., Fry, G.C., Dennis, D.M., Heales, D.S., Venables, W.N.

“…Little is known about the impacts of mine waste disposal, including deep-sea tailings, on tropical marine environments and this study presents the first…”
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Tropical prawn trawl bycatch of fish and seasnakes reduced by Yarrow Fisheye Bycatch Reduction Device by Heales, D.S., Gregor, R., Wakeford, J., Wang, Y.-G., Yarrow, J., Milton, D.A.

“…Reducing unwanted trawl bycatch is actively encouraged in Australia, particularly in prawn trawl fisheries. We tested the performance of a Bycatch Reduction…”
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Bycatch in a tropical schooling - penaeid fishery and comparisons with a related, specialised trawl regime by DELL, Q, BREWER, D.T, GRIFFITHS, S.P, HEALES, D.S, TONKS, M.L

“…The bycatch in a tropical Australian banana prawn, Penaeus merguiensis (de Man), fishery is described and contrasted with the closely related tiger prawn,…”
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How far do prawns and fish move into mangroves? Distribution of juvenile banana prawns Penaeus merguiensis and fish in a tropical mangrove forest in northern Australia by Vance, D. J., Haywood, M. D. E., Heales, D. S., Kenyon, R. A., Loneragan, N. R., Pendrey, R. C.

“…It is accepted that mangroves are important nursery areas for prawns and fish, including some of major commerical importance, but little is known about how…”
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Detecting declines in catch rates of diverse trawl bycatch species, and implications for monitoring by Heales, D.S., Brewer, D.T., Kuhnert, P.M., Jones, P.N.

“…Trawl fisheries around the world are being pressured to demonstrate that their impacts on both the target and bycatch species are sustainable in the long-term…”
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Estimating the influence of prawn stocking density and seagrass type on the growth of juvenile tiger prawns (Penaeus semisulcatus) : results from field experiments in small enclosures by LONERAGAN, N. R, HAYWOOD, E, HEALES, D. S, KENYON, R. A, PENDREY, R. P, VANCE, D. J

“…Fine mesh enclosures (0.9 m(2) in basal area, 1 m high, with 100 mum mesh) and a jet-net retrieval system were developed to test the influence of juvenile…”
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Sustainability of elasmobranchs caught as bycatch in a tropical prawn trawl fishery by Stobutzki, Ilona C, Miller, Margaret J, Heales, Don S, Brewer, David T

“…Bycatch in Australia's northern shrimp fishery includes 56 elasmobranch species, whose sustainability is unknown under current bycatch rates. A…”
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Seasonal and annual variation in abundance of postlarval and juvenile banana prawns Penaeus merguiensis and environmental variation in two estuaries in tropical northeastern Australia: a six year study by Vance, D. J., Haywood, M. D. E., Heales, D. S., Kenyon, R. A., Loneragan, N. R.

“…We studied the fortnightly, seasonal and annual variation in abundance of postlarval and juvenile Penaeus merguiensis in the Embley and Mission River estuaries…”
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Subsampling trawl catches from vessels using seawater hoppers: are catch composition estimates biased? by Heales, D.S, Brewer, D.T, Jones, P.N

“…Subsampling is a commonly used method for estimating the composition of trawl catches. In many fisheries, an increasing number of trawlers use recirculating…”
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Abundance of fish and crustacean postlarvae on portable artificial seagrass units: daily sampling provides quantitative estimates of the settlement of new recruits by Kenyon, R.A, Haywood, M.D.E, Heales, D.S, Loneragan, N.R, Pendrey, R.C, Vance, D.J

“…Artificial collectors and seagrass units have mainly provided qualitative samples of epifaunal abundance or have been difficult and time-consuming to sample…”
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Seasonal and annual variation in abundance of postlarval and juvenile grooved tiger prawns Penaeus semisulcatus and environmental variation in the Embley River, Australia: a six year study by Vance, D. J., Haywood, M. D. E., Heales, D. S., Staples, D. J.

“…We studied the 2-weekly, seasonal and annual variation in abundance of postlarval and juvenile Penaeus semisulcatus on a seagrass and an algal bed in the…”
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Subsampling multi-species trawl catches from tropical northern Australia:: Does it matter which part of the catch is sampled? by Heales, D.S, Brewer, D.T, Wang, Y.-G

“…Subsampling is a common method for estimating the abundance of species in trawl catches. However, the accuracy of subsampling in representing the total catch…”
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Predation of juvenile tiger prawns in a tropical Australian estuary by Haywood, M. D. E., Heales, D. S., Kenyon, R. A., Loneragan, N. R., Vance, D. J.

“…We investigated predation of juvenile penaeids, in particular the grooved tiger prawn Penaeus semisulcatus and the brown tiger prawn P. esculentus, by sampling…”
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Field observations of moult cycle, feeding behaviour, and diet of small juvenile tiger prawns Penaeus semisulcatus in the Embley River, Australia by Heales, D. S., Vance, D. J., Loneragan, N. R.

“…Juvenile tiger prawns Penaeus semisulcatus (2.5 to 5.5 mm carapace length) were collected on an intertidal seagrass bed in the Embley River estuary in the Gulf…”
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Estimating the efficiency of a small beam trawl for sampling tiger prawns Penaeus esculentus and P. semisulcatus in seagrass by removal experiments by Loneragan, N. R., Wang, Y.-G., Kenyon, R. A., Staples, D. J., Vance, D. J., Heales, D. S.

“…The efficiency with which a small beam trawl (1 × 0.5 m mouth) sampled postlarvae and juveniles of tiger prawns Penaeus esculentus and P. semisulcatus at night…”
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Does the size of subsamples taken from multispecies trawl catches affect estimates of catch composition and abundance? by Heales, Donald S, Brewer, David T, Wang, You-Gan, Jones, Peter N

“…Although subsampling is a common method for describing the composition of large and diverse trawl catches, the accuracy of these techniques is often unknown…”
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Predation of juvenile tiger prawns in a tropical Australian estuary by Haywood, MDE, Heales, DS, Kenyon, RA, Loneragan, NR, Vance, DJ

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