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Department of Primary Industries and Regional Development, Western Australia

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Articles 751 - 780 of 868

Full-Text Articles in Natural Resources Management and Policy

The Report Of The Fish Farming Legislative Review Committee., P. Rogers Oct 1986

The Report Of The Fish Farming Legislative Review Committee., P. Rogers

Fisheries Management Papers

In 1975, amendments to the Fisheries Act provided for the licensing and control of commercial fish farming activities and , for specific declared species, further controls on their processing and marketing. To date, marron has been the only species to be declared a "farm fish". During the last decade, much of the State's aquaculture impetus has focused on marron although more recently greater attention has been directed towards trout, yabbies and freshwater aquarium fish species. On November 19, 1984, the Marron Growers Association of Western Australia (Inc) wrote to the Minister for Fisheries and Wildlife, seeding a general review of …


Kununurra Region - Land Utilization Report - 1984 Dry Season - 1984/85 Wet Season And 1985 Dry Season In The Ord River Irrigation Area, S. Sandover Jul 1986

Kununurra Region - Land Utilization Report - 1984 Dry Season - 1984/85 Wet Season And 1985 Dry Season In The Ord River Irrigation Area, S. Sandover

Natural resources published reports

Kununurra Region

3rd edition

A small experimental farm was first established on the Ord River in 1941. This farm was relocated in 1945 to what is now known as the Frank Wise Institute of Tropical Agriculture.

The first stage of the Irrigation Scheme which included the Diversion dam was completed by 1963 and by 1966, 31 irrigated farms had been established.

In 1967 the second stage was commenced and by 1972 the main dam had been completed.

Cotton was the major crop until 1974. In the wet season of that year 3642 hectares was devoted to cotton. Various crops such …


Jandakot Groundwater Scheme Area : A Study Of Land Resources And Planning Considerations, M R. Wells, N L B Richards, A J. Clarke Jan 1986

Jandakot Groundwater Scheme Area : A Study Of Land Resources And Planning Considerations, M R. Wells, N L B Richards, A J. Clarke

Resource management technical reports

No abstract provided.


Fisheries Report No 73 - The Western Rock Lobster Fishery 1981 - 1982, R. S. Brown, E. H. Barker Jan 1986

Fisheries Report No 73 - The Western Rock Lobster Fishery 1981 - 1982, R. S. Brown, E. H. Barker

Fisheries Research Reports

The fishery for the western rock lobster Panulirus cygnus is one of the most important single fisheries in Australia and an important export earner for the State. Western Australia produced 10,548 tonnes in 1981/82, out of a total Australian catch of rock lobster of 15,764 tonnes. The fishery is governed by a complex set of regulations which have been reviewed by Bowen (1971) and Hancock (1981) and which are designed to limit the total fishing effort to acceptable levels and to enforce a legal minimum size. It is thus important to constantly monitor the state of the fishery both to …


Shire Of Wanneroo : A Study Of Land Resources And Planning Considerations, Department Of Agriculture, Western Australia, M R. Wells, A J. Clarke Jan 1986

Shire Of Wanneroo : A Study Of Land Resources And Planning Considerations, Department Of Agriculture, Western Australia, M R. Wells, A J. Clarke

Resource management technical reports

No abstract provided.


Documentation Of Whole-Farm Model For The Eastern Wheatbelt Of Western Australia, Ross S. Kingwell, David J. Pannell, David. A. Morrison Mar 1985

Documentation Of Whole-Farm Model For The Eastern Wheatbelt Of Western Australia, Ross S. Kingwell, David J. Pannell, David. A. Morrison

Grain and other field crops published reports

The Eastern Wheatbelt Model (EwM) is a hypothetical farm model, intended to be representative of farms in the eastern wheatbelt region. It is a model of an 'average' farm in an 'average' season. Nevertheless it is possible to substitute the resource mix of a 'real' farm for the •average' and to substitute various types of season for the 'average'.

Assumptions of 'average' farm resources and •average' season are based on opinions by WADA researchers and advisers. For the EWM, researchers and advisers at Merredin prescribed average resources for an eastern wheatbelt farm receiving a 300 mm average rainfall including 210 …


Fisheries Report No 69 - The Western Rock Lobster Fishery 1979 - 1980, R. S. Brown, E. H. Barker Jan 1985

Fisheries Report No 69 - The Western Rock Lobster Fishery 1979 - 1980, R. S. Brown, E. H. Barker

Fisheries Research Reports

The fishery for the western rock lobster Panulirus cygnus one of the most important single fisheries in Australia and an important export earner for the State. Western Australia produced 10 724 tons in 1979/80, out of a total Australian catch of rock lobster of 14 739 tons. The fishery is governed by a complex set of regulations which have been reviewed by Bowen (1971) and Hancock (1981) and which are designed to limit the total fishing effort to acceptable levels and to enforce a legal minimum size. It is thus important to constantly monitor the state of the fishery both …


Fisheries Report No 72 - The Western Rock Lobster Fishery 1980 - 1981, R. S. Brown, E. H. Barker Jan 1985

Fisheries Report No 72 - The Western Rock Lobster Fishery 1980 - 1981, R. S. Brown, E. H. Barker

Fisheries Research Reports

The fishery for the western rock lobster Panulirus cygnus is one of the most important single fisheries in Australia and an important export earner for the State. Western Australia produced 9 957 tonnes in 1980/81, out of a total Australian catch of rock lobster of 15 565 tonnes. The fishery is governed by a complex set of regulations which have been reviewed by Bowen (1971) and Hancock (1981) and which are designed to limit the total fishing effort to acceptable levels and to enforce a legal minimum size. It is thus important to constantly monitor the state of the fishery …


Fisheries Report No 70 - The Western Rock Lobster Fishery 1982 - 1983, R. S. Brown, E. H. Barker Jan 1985

Fisheries Report No 70 - The Western Rock Lobster Fishery 1982 - 1983, R. S. Brown, E. H. Barker

Fisheries Research Reports

The fishery for the western rock lobster Panulirus cygnus is one of the most important single fisheries in Australia and an important export earner for the State. Western Australia produced a record 12 416 tons in 1982/83, out of a total Australian rock lobster catch of 18 192 tons. The fishery is governed by a complex set of regulations which have been reviewed by Bowen (1971) and Hancock (1981) and which are designed to limit the total fishing effort to acceptable levels and to enforce a legal minimum size. It is thus important to constantly monitor the state of the …


Fisheries Report No 68 - The Commercial Fishery For Barramundi (Lates Calcarifer) In Western Australia, Dr N. Morrissy Jan 1985

Fisheries Report No 68 - The Commercial Fishery For Barramundi (Lates Calcarifer) In Western Australia, Dr N. Morrissy

Fisheries Research Reports

Commercial catch and effort data from the Western Australian fishery for barramundi, Lates calcarifer, over eight years to 1982-83 were analysed. Major stocks and areas of this fishery are Cambridge Gulf (Ord River, port of Wyndham), Kimberley coast, King Sound and Broome coast (Fitzroy River, ports of Derby and Broome), and Pilbara coast (ports of Port Hedland, Roebourne and Onslow) where the Ashburton River is the southern limit to the distribution of barramundi on the west coast. As elsewhere, barramundi stocks are associated with river systems. The Low annual catch of about 30 tonnes appears to be due to the …


Impact Of Petroleum Exploration Activity On Range Resources And Pastoral Pursuits In The West Kimberley, N Klepacki, S J. Black, M H. Marchant Jan 1985

Impact Of Petroleum Exploration Activity On Range Resources And Pastoral Pursuits In The West Kimberley, N Klepacki, S J. Black, M H. Marchant

Resource management technical reports

No abstract provided.


Improved Catchments For Farm Dams, I A F Laing Jan 1985

Improved Catchments For Farm Dams, I A F Laing

Journal of the Department of Agriculture, Western Australia, Series 4

The amounts and frequency of runoff from unimproved farmland catchments in Western Australia's cereal and sheep districts are notoriously variable and unreliable. As a result many farmers have constructed improved catchments to ensure better reliability of farm dams for livestock and homestead water supplies.

Improved catchments which are used extensively on these farms are all of the compacted or bare-earth type. These include roaded catchments, flat batter dams and, to a lesser extent, scraped catchments. This article mainly discusses roaded catchments, the most common of the improved catchment types on farms.


Fisheries Report No 71 - An Investigation Of The Mortality Of The Pearl Oyster, Pinctada Maxima, In Western Australia, Rand Dybdahl, David A. Pass Jan 1985

Fisheries Report No 71 - An Investigation Of The Mortality Of The Pearl Oyster, Pinctada Maxima, In Western Australia, Rand Dybdahl, David A. Pass

Fisheries Research Reports

A three year investigation into the cause of abnormally high mortality rates of the pearl oyster, Pinctada maxima, on the cultured pearl industry's lease sites in the North West of Western Australia was completed on 30 June 71983. The objective of this study was to determine environmental, physiological and pathological factors predisposing farm oysters to excessive Levels of mortality and, if possible, make recommendations to alleviate this problem.

As mass mortalities may have complex causes, complementary field and laboratory studies were instigated. The culture industry's method of collection, transportation and farm husbandry were examined. Environmental parameters were monitored. Various empirical …


Shire Of Rockingham : A Study Of Land Resources And Planning Considerations, Veronica P M Oma, N L B Richards, M R. Wells Jan 1985

Shire Of Rockingham : A Study Of Land Resources And Planning Considerations, Veronica P M Oma, N L B Richards, M R. Wells

Resource management technical reports

No abstract provided.


A Study Of Alternative Sites For Equestrian/Hobby Farm Development In The Karratha Area, Bernard Kok Jul 1984

A Study Of Alternative Sites For Equestrian/Hobby Farm Development In The Karratha Area, Bernard Kok

Resource management technical reports

This report has been prepared in response to a request from the Shire of Roebourne to assess the land use capabilities for equestrian/hobby farm development in the Karratha area.The report comprises five parts; a brief review of the areas climate,discussion of the geological soil units and vegetation, water supply, alternative areas of development and recommendations.


A Resource Survey Of The Coastal Lands From Vlaming Head To Tantabiddi Well, West Cape Range Region, P A. Hesp, J G. Morrissey Feb 1984

A Resource Survey Of The Coastal Lands From Vlaming Head To Tantabiddi Well, West Cape Range Region, P A. Hesp, J G. Morrissey

Resource management technical reports

The report comprise four parts; a brief review of the area's climate, discussion of the geomorphology of the major landform units, an assessment of the potential erosion hazards of the surveyed landforms, and recommendations for development.


Fisheries Report No 66 - The Fishery For Perth Herring, Nematalosa Vlaminghi (Munro), C F. Chubb, N. G. Hall, R C.J. Lenanton, I. C. Potter Jan 1984

Fisheries Report No 66 - The Fishery For Perth Herring, Nematalosa Vlaminghi (Munro), C F. Chubb, N. G. Hall, R C.J. Lenanton, I. C. Potter

Fisheries Research Reports

Perth herring fishery over the last 30 years have been examined. While there are pockets of catches between Broome and Bunbury, those from the Swan Estuary and nearby inshore marine waters make by far the most important contribution to the fishery. In the Swan Estuary, the catches started rising in the 1950s in response to a demand by the rock lobster industry for bait and reached peak values in the late 1960s and early 1970s. Data are provided which demonstrate that catch per boat is a good index of catch per unit effort (CPUE) in the period since 1967 when …


Fisheries Report No. 65 - The Amateur Fishery For Marron (Cherax Tenuimanus) In Western Australia - Summary Of Logbook Data 1971-83, N. Morrissy, C. Fellows, N. Caputi Jan 1984

Fisheries Report No. 65 - The Amateur Fishery For Marron (Cherax Tenuimanus) In Western Australia - Summary Of Logbook Data 1971-83, N. Morrissy, C. Fellows, N. Caputi

Fisheries Research Reports

The large, native crayfish called marron, Cherax tenuimanus, supports an extensive recreational fishery in the southwest of Western Australia. This report examines annual catch and effort statistics gathered from a Logbook programme, initiated in the 1971/72 season and supplemented by an end of season telephone survey from 1977. Logbook data gave estimates of relative abundance, but were too biased for projection to total catch and effort for the fishery, while telephone surveys gave unbiased estimates of total annual fishing effort (trips)l.

Relative abundance showed a significant decline in the major rivers and the most popular dam (Wellington) over the monitoring …


Fisheries Report No 60 - Amateur Net Fishing Survey Of Two Western Australian South Coast Estuaries In January 1981, D. I. Heald Jan 1984

Fisheries Report No 60 - Amateur Net Fishing Survey Of Two Western Australian South Coast Estuaries In January 1981, D. I. Heald

Fisheries Research Reports

Following the return of the administration of fishing activities in Wellstead estuary and Beaufort Inlet to the Western Australian Government in October 1980, a survey of the amateur net fishing in these two estuaries was undertaken in January 1987, The purpose of the survey was to document usage, species catches and size composition of fish caught in respect of mesh size used and the success rate of amateur net fishermen as compared to their expectation. At the time of the survey, Wellstead estuary had been closed to the sea for 13 months and Beaufort Inlet for 27 months and the …


Fisheries Report No 63 - Assessment Of Artificial Feeds For Battery Culture Of A Freshwater Crayfish, Marron (Cherax Tenuimanus) (Decapoda: Parastacidae), Dr N. Morrissy Jan 1984

Fisheries Report No 63 - Assessment Of Artificial Feeds For Battery Culture Of A Freshwater Crayfish, Marron (Cherax Tenuimanus) (Decapoda: Parastacidae), Dr N. Morrissy

Fisheries Research Reports

Performance of juvenile crayfish, 0.1-5 g, on a variety of commercial crustacean feeds was tested under conditions of individual housing ("battery culture"), where sources of additional feed were minimized (detritus), or eliminated (cannibalism) Survival was close, or equal, to 100% over 50 day test periods, a reflection of optimal battery conditions rather than feeding, since survival over 100 days for an unfed (control} group was also 100%. No ecdysiad mortality, or trauma, occurred with crayfish, up to 10g, in compartments of area 75 cm. Growth performance in tests was rated by separate ratios for ecdysial increment and frequency, relative to …


Fisheries Report No 64 - The Western Rock Lobster Fishery 1977 - 1978, R. S. Brown, E H. Barker Jan 1984

Fisheries Report No 64 - The Western Rock Lobster Fishery 1977 - 1978, R. S. Brown, E H. Barker

Fisheries Research Reports

The fishery for the western rock lobster Panulirus cygnus is one of the most important single fisheries in Australia and an important export earner for the State. The fishery is governed by a complex set of regulations which have been reviewed by Bowen (1971) and which are designed to limit the total fishing effort to acceptable levels and to enforce a legal minimum size. It is thus important to constantly monitor the state of the fishery both to ensure that the effort is remaining within the accepted limits and that the regulations are adequately performing their function of maintaining reasonably …


Fisheries Report No 67 - The Western Rock Lobster Fishery 1978 - 1979, R. S. Brown, E H. Barker Jan 1984

Fisheries Report No 67 - The Western Rock Lobster Fishery 1978 - 1979, R. S. Brown, E H. Barker

Fisheries Research Reports

The fishery for the western rock lobster Panulirus cygnus is one of the most important single fisheries in Australia and an important export earner for the State. Western Australia produced a record 11 388 tons in 1978/79, out of a total Australian catch of rock lobster of 15 400 tons. The fishery is governed by a complex set of regulations which have been reviewed by Bowen (1971) and Hancock (1981) and which are designed to limit the total fishing effort to acceptable levels and to enforce a legal minimum size. It is thus important to constantly monitor the state of …


Fisheries Report No 62 - The Commercial Fisheries Of Temperate Western Australian Estuaries: Early Settlement To 1975, R C.J. Lenanton Jan 1984

Fisheries Report No 62 - The Commercial Fisheries Of Temperate Western Australian Estuaries: Early Settlement To 1975, R C.J. Lenanton

Fisheries Research Reports

This report provides a quantitative description of the commercial estuarine fisheries of temperate Western Australia. An account is given of the Long series of historical events which influenced the development of the fisheries and led to their current status. All available catch and effort data covering the years 1898 - 1975 are presented. The use of this long series of historical catch and effort data as an aid to the management of the estuarine fisheries resources is discussed. It is emphasised that interpretations of these data cannot be undertaken effectively without a knowledge of factors such as Life history strategies, …


Annean Station Management Plan, A A. Mitchell May 1983

Annean Station Management Plan, A A. Mitchell

Resource management technical reports

Annean Station's carrying capacity has been estimated at 8,340 sheep on its 168,539 hectares. The halophyte pastures of Carnegie Land System were in good condition while those of Mileura Land System were in poor condition. The wandarrie pasture of the Belele Land System was in fair to poor condition. This system comnprises 34 per cent of Annean's area and is estimated as capable of presently carrying 2,900 stock.


Fisheries Report No 59 - Potential Fisheries Capability Of The Ord In The Short, Medium And Long Terms, Dr N. Morrissy Jan 1983

Fisheries Report No 59 - Potential Fisheries Capability Of The Ord In The Short, Medium And Long Terms, Dr N. Morrissy

Fisheries Research Reports

This report examines the history, future and problems of various methods for development and exploitation of the fisheries resources of the Ord.

The primary resource is the array of native fish and crustacean species, with the possible introduction of other desirable or noxious species being a subject for consideration.

Water resources, supporting these species, are the remaining natural Ord River downstream from the Diversion Dam at Kununurra, the stillwaters of Lake Kununurra and Lake Argyle, and, for aquaculture, the controlled distribution of water supply over the flat land of the irrigation system (Fig. 1). Another recognized resource is the climatic …


Land Resource Survey Report Of The Brigadoon Development Proposal, M R. Wells Jan 1983

Land Resource Survey Report Of The Brigadoon Development Proposal, M R. Wells

Resource management technical reports

No abstract provided.


Pastoral Land Degradation: The Fitzroy As A Case Study, Alan L. Payne, Ronald B. Hacker Jan 1983

Pastoral Land Degradation: The Fitzroy As A Case Study, Alan L. Payne, Ronald B. Hacker

Journal of the Department of Agriculture, Western Australia, Series 4

When large numbers of domestic livestock are superimposed on native vegetation in semi-arid and arid areas of the world, the ecological balance inevitably changes. In extreme cases these changes include such degradation as drastic losses of vegetation and active soil erosion. Areas affected in this way are unproductive for most purposes.

Western Australia's Fitzroy River valley has deteriorated in this way. Today, this once-­productive grazing country is so degraded that it has become a matter of concern to Governments, the pastoral industry and others.

This article gives a brief history of land degradation in parts of the Fitzroy River valley, …


A Brief Study Of Land Capability In The Coastal Region Of The Shire Of Harvey, Department Of Agriculture, Western Australia. Soil Conservation Service, M R. Wells, P A. Hesp Jan 1983

A Brief Study Of Land Capability In The Coastal Region Of The Shire Of Harvey, Department Of Agriculture, Western Australia. Soil Conservation Service, M R. Wells, P A. Hesp

Resource management technical reports

No abstract provided.


Curbur Station : Inventory Of The Range And Its Management, Alexander Mcrae Holm Dec 1982

Curbur Station : Inventory Of The Range And Its Management, Alexander Mcrae Holm

Resource management technical reports

Ten land systems were identified, descriped and mapped. potential feed status was assessed for each land system. The land systems were then ranked accordingly and stocking rates allocated. Wongdong saline shrublands was considered to be the most productive system and Narryer hills, outcrops and breakaways the least productive. An assessment was made of the range condition and erosion status of the least. These assessments indicated that most of the pastures had been heavily utilized in the past.


Quobba Point Chalet Development Land Capability Study [And] Environmental Consideration, J R H Riches, L E. Chalmers Dec 1982

Quobba Point Chalet Development Land Capability Study [And] Environmental Consideration, J R H Riches, L E. Chalmers

Resource management technical reports

The preferred area for development is the Old Stabilised Dune System. The Hind Dune Flat is a stable area but is limited in size. Other environmental and town planning considerations may militate against development of this area for Chalet Development.