Limited Entry in the Western Australian Rock Lobster and Prawn Fisheries: An Economic Evaluation

1979 ◽  
Vol 36 (7) ◽  
pp. 789-798 ◽  
Author(s):  
T. F. Meany
Keyword(s):  
Economic Evaluation ◽  
Key Words ◽  
Rock Lobster ◽  
Limited Entry ◽  
Lobster Fishery ◽  
High Degree ◽  
Western Australian

Limited entry was first introduced into the rock lobster and prawn fisheries in 1963. Both fisheries have been characterized by rapidly rising prices for species caught. Although some sectors of the rock lobster fishery have remained moderately profitable, excessive reinvestment in boats and equipment has greatly reduced potential profitability. No trend towards company ownership of boats has been evident in this fishery. The prawn fishery was initially developed with a high degree of company ownership and the proportion of company ownership has increased. Overcapitalization has not occurred to any great extent in this fishery and profitability has remained high. Key words: rock lobster, prawns, limited entry, Australia, economics, overcapitalization, monopoly

Nodulation and performance of exotic and native legumes in Australian soils

2003 ◽  
Vol 51 (5) ◽  
pp. 543 ◽  
Author(s):  
María A. Pérez-Fernández ◽  
Byron B. Lamont
Keyword(s):  
Native Species ◽  
Treated Soil ◽  
Retama Sphaerocarpa ◽  
Australian Species ◽  
And Performance ◽  
Natural Stands ◽  
High Degree ◽  
Western Australian ◽  
Cytisus Balansae ◽  
New Habitats

Six Spanish legumes, Cytisus balansae, C. multiflorus, C. scoparius, C. striatus, Genista hystrix and Retama sphaerocarpa, were able to form effective nodules when grown in six south-western Australian soils. Soils and nodules were collected from beneath natural stands of six native Australian legumes, Jacksonia floribunda, Gompholobium tomentosum, Bossiaea aquifolium, Daviesia horrida, Gastrolobium spinosum and Templetonia retusa. Four combinations of soils and bacterial treatments were used as the soil treatments: sterile soil (S), sterile inoculated soils (SI), non-treated soil (N) and non-treated inoculated soils (NI). Seedlings of the Australian species were inoculated with rhizobia cultured from nodules of the same species, while seedlings of the Spanish species were inoculated with cultures from each of the Australian species. All Australian rhizobia infected all the Spanish species, suggesting a high degree of 'promiscuity' among the bacteria and plant species. The results from comparing six Spanish and six Australian species according to their biomass and total nitrogen in the presence (NI) or absence (S) of rhizobia showed that all species benefitted from nodulation (1.02–12.94 times), with R.�sphaerocarpa and C. striatus benefiting more than the native species. Inoculation (SI and NI) was just as effective as, or more effective than the non-treated soil (i.e. non-sterile) in inducing nodules. Nodules formed on the Spanish legumes were just as efficient at fixing N2 as were those formed on the Australian legumes. Inoculation was less effective than non-treated soil at increasing biomass but just as effective as the soil at increasing nitrogen content. Promiscuity in the legume–bacteria symbiosis should increase the ability of legumes to spread into new habitats throughout the world.

scholarly journals Changes in the lease and permanent sale quota markets of a rock lobster fishery in response to stock abundance

2015 ◽  
Vol 72 (5) ◽  
pp. 1555-1564 ◽  
Author(s):  
Rafael León ◽  
Caleb Gardner ◽  
Ingrid van Putten ◽  
Klaas Hartmann
Keyword(s):  
Granger Causality Test ◽  
Economic Rent ◽  
Rock Lobster ◽  
Markov Modelling ◽  
Causality Test ◽  
Individual Transferable Quotas ◽  
Theoretical Pattern ◽  
Lobster Fishery ◽  
Trade Market ◽  
Stock Abundance

AbstractEffective individual transferable quotas (ITQ) systems rebuild stocks and allow transfer of quotas to more efficient operators. This process requires functional markets for both quota sales and temporary quota leases. These markets are expected to respond to changes in economic rent from the fishery, which is influenced by stock abundance and the international rock lobster price. This research used multistate Markov modelling and Granger causality test to examine changes in the permanent and temporary quota trade in the Tasmanian rock lobster fishery quota market, during periods of both increasing and decreasing stock abundance. The permanent quota trade market was more active during the period of stock growth, while the quota lease market was active in both periods of stock growth and decline. In contrast to theoretical trends in ITQ fisheries, trades in both markets were not linked to the technical efficiency (i.e. catching capability) of operators, but were more driven by the quota owners' financial capacity (i.e. number of owned quotas). Prolonged and unexpected stock decline affected the quota market so that it deviated from the theoretical pattern of ITQ fisheries. Operators previously active in the market reduced their activity, while smaller operators and firms that previously had not traded became more active, so the fleet expanded with smaller operators entering.

scholarly journals A Rare Case of Isolated Cecal Necrosis

2021 ◽  
Vol 11 (6) ◽  
pp. 197-199
Author(s):  
Challa Sravani ◽  
Madhura M Killedar
Keyword(s):  
Acute Appendicitis ◽  
Key Words ◽  
Blood Supply ◽  
Ischemic Colitis ◽  
Older Patients ◽  
Rare Case ◽  
Fatal Complication ◽  
Delay In Diagnosis ◽  
Anatomical Abnormality ◽  
High Degree

Isolated cecal necrosis is a rare abdominal condition. Usually presents as acute appendicitis clinically. Mostly occurring in older patients with cardiac and renal comorbidities. Anatomical abnormality of cecal blood supply is usually observed. Diagnosis is difficult preoperatively without high degree of suspicion. Any delay in diagnosis can lead to fatal complication. Key words: isolated cecal necrosis, ischemic colitis, acute appendicitis.

Climate Vulnerability and its Perceived Impact on the Namibian Rock Lobster Fishery

2021 ◽  
pp. 1843-1863
Author(s):  
Johannes A. Iitembu ◽  
Paulus Kainge ◽  
Warwick H. H. Sauer
Keyword(s):  
Rock Lobster ◽  
Climate Vulnerability ◽  
Lobster Fishery ◽  
Perceived Impact

scholarly journals Evaluating the ecosystem effects of variation in recruitment and fishing effort in the western rock lobster fishery

2013 ◽  
Vol 145 ◽  
pp. 128-135 ◽  
Author(s):  
Hector Lozano-Montes ◽  
Neil R. Loneragan ◽  
Russ Babcock ◽  
Nick Caputi
Keyword(s):  
Fishing Effort ◽  
Rock Lobster ◽  
Ecosystem Effects ◽  
Lobster Fishery

Restructuring the Tasmanian rock-lobster fishery - the effect of two years of management under individual transferable quotas

2001 ◽  
Vol 52 (8) ◽  
pp. 1641 ◽  
Author(s):  
Wes Ford ◽  
Wes Ford
Keyword(s):  
Egg Production ◽  
Fishing Effort ◽  
Rock Lobster ◽  
Quota System ◽  
Individual Transferable Quotas ◽  
Fishing Vessels ◽  
Early Results ◽  
Lobster Fishery ◽  
Quota Management ◽  
One Year

Individual transferable quotas were successfully introduced into the Tasmanian rock-lobster fishery in 1998. In the two years since, significant industry restructuring has occurred. The move to quota management was intended to meet two key objectives: to reduce the catch to a sustainable level, allowing the stock to rebuild, and to provide a mechanism whereby the industry could achieve economic sustainability. The quota system has achieved early results on both the sustainability and restructuring objectives and is now well accepted and supported by the vast majority of fishers and licence holders. Its effect has been to reduce fishing effort by 29% and number of fishing vessels by 23%, and the reduction in catch has resulted in a 6% increase in the estimated biomass and substantial increases in egg production after one year. Fishers now spend fewer days at sea, and catch rates are improving. These changes are reducing fishing costs, which in time should increase profitability. Social costs of introducing quotas are that fewer fishers are employed on vessels and that fishers now find it harder and more expensive to lease a fishing licence. These costs must be factored into any assessment of the industry.

Morrison barley

1991 ◽  
Vol 71 (1) ◽  
pp. 187-188
Author(s):  
K. M. Ho
Keyword(s):  
Hordeum Vulgare ◽  
Powdery Mildew ◽  
Key Words ◽  
High Yield ◽  
Research Centre ◽  
Hordeum Vulgare L ◽  
Eastern Canada ◽  
Lodging Resistance ◽  
High Degree ◽  
High Test

Morrison is a two-rowed spring feed barley (Hordeum vulgare L.) cultivar developed by the Plant Research Centre, Agriculture Canada, Ottawa. It was selected from a Rodeo/Gitane cross. Morrison has high yield, high test weight, large kernels, good lodging resistance and a high degree of resistance to powdery mildew (Erysiphe graminis D.C.). It is suitable for growing in Eastern Canada. Key words: Hordeum vulgare L., two-rowed barley, feed barley, high yield

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