Manipulation of fishing effort in Australia's penaeid Prawn Fisheries

The potentially detrimental side-effects of prawn trawling are coming under increasing scrutiny in Australian waters, particularly in such ecologically sensitive areas as Queensland's Great Barrier Reef, and various restrictive measures are being suggested. Before changes are imposed on the prawning industry, the effects of trawling on the target prawn species and the long-term management of these effects need to be fully understood. Using a simulation model of a simplified prawn fishery, this paper describes the basis for the current regulatory mechanisms for Australian's prawn fisheries, in particular the manipulation of both the level and pattern of fishing effort. It is shown that even in moderately fished stocks, the fishery manager has several options, such as seasonal and nursery area closures, that are consistent with the goal of minimizing the impact of prawn trawling, while in no way penalizing the industry economically. With these in mind, possible ways of resolving or reducing the conflict with groups outside the prawning industry are discussed.

Download Full-text

Protecting the Great Barrier Reef: analysing the impact of a conservation documentary and post-viewing strategies on long-term conservation behaviour

Environmental Education Research ◽

10.1080/13504622.2017.1303820 ◽

2017 ◽

Vol 24 (4) ◽

pp. 521-536 ◽

Cited By ~ 9

Author(s):

Karen Hofman ◽

Karen Hughes

Keyword(s):

Great Barrier Reef ◽

Barrier Reef ◽

The Impact

Download Full-text

Water quality in the inshore Great Barrier Reef lagoon: Implications for long-term monitoring and management

Marine Pollution Bulletin ◽

10.1016/j.marpolbul.2011.10.031 ◽

2012 ◽

Vol 65 (4-9) ◽

pp. 249-260 ◽

Cited By ~ 88

Author(s):

Britta Schaffelke ◽

John Carleton ◽

Michele Skuza ◽

Irena Zagorskis ◽

Miles J. Furnas

Keyword(s):

Water Quality ◽

Great Barrier Reef ◽

Barrier Reef ◽

Reef Lagoon ◽

Long Term Monitoring ◽

Term Monitoring ◽

Inshore Great Barrier Reef

Download Full-text

Economically viable land regeneration in Central Queensland and improved water quality outcomes for the Great Barrier Reef

The Rangeland Journal ◽

10.1071/rj10005 ◽

2011 ◽

Vol 33 (3) ◽

pp. 267 ◽

Cited By ~ 6

Author(s):

M. Star ◽

P. Donaghy ◽

J. Rolfe

Keyword(s):

Great Barrier Reef ◽

Ground Cover ◽

Scientific Data ◽

Barrier Reef ◽

Sediment Loads ◽

Land Condition ◽

Sediment Reduction ◽

Grazing Lands ◽

The Impact ◽

Land Types

The impact of excessive sediment loads entering into the Great Barrier Reef lagoon has led to increased awareness of land condition in grazing lands. Improved ground cover and land condition have been identified as two important factors in reducing sediment loads. This paper reports the economics of land regeneration using case studies for two different land types in the Fitzroy Basin. The results suggest that for sediment reduction to be achieved from land regeneration of more fertile land types (brigalow blackbutt) the most efficient method of allocating funds would be through extension and education. However for less productive country (narrow leaved ironbark woodlands) incentives will be required. The analysis also highlights the need for further scientific data to undertake similar financial assessments of land regeneration for other locations in Queensland.

Download Full-text

Long‐term dynamics and drivers of coral and macroalgal cover on inshore reefs of the Great Barrier Reef Marine Park

Ecological Applications ◽

10.1002/eap.2008 ◽

2019 ◽

Vol 30 (1) ◽

Cited By ~ 5

Author(s):

Daniela M. Ceccarelli ◽

Richard D. Evans ◽

Murray Logan ◽

Philippa Mantel ◽

Marji Puotinen ◽

...

Keyword(s):

Great Barrier Reef ◽

Barrier Reef ◽

Macroalgal Cover ◽

Marine Park

Download Full-text

Assessment of the Accuracy of Recent Empirical and Assimilated Tidal Models for the Great Barrier Reef, Australia, Using Satellite and Coastal Data

Remote Sensing ◽

10.3390/rs11101211 ◽

2019 ◽

Vol 11 (10) ◽

pp. 1211 ◽

Cited By ~ 4

Author(s):

Fardin Seifi ◽

Xiaoli Deng ◽

Ole Baltazar Andersen

Keyword(s):

Great Barrier Reef ◽

Sea Level ◽

Root Mean Square ◽

Tide Gauge ◽

Bottom Topography ◽

Deep Ocean ◽

Mean Square ◽

Barrier Reef ◽

In Situ Data ◽

The Impact

The latest satellite and in situ data are a fundamental source for tidal model evaluations. In this work, the satellite missions TOPEX/Poseidon, Jason-1, Jason-2 and Sentinel-3A, together with tide gauge data, were used to investigate the performance of recent regional and global tidal models over the Great Barrier Reef, Australia. Ten models, namely, TPXO8, TPXO9, EOT11a, HAMTIDE, FES2012, FES2014, OSUNA, OSU12, GOT 4.10 and DTU10, were considered. The accuracy of eight major tidal constituents (i.e., K1, O1, P1, Q1, M2, S2, N2 and K2) and one shallow water constituent (M4) were assessed based on the analysis of sea-level observations from coastal tide gauges and altimetry data (TOPEX series). The outcome was compared for four different subregions, namely, the coastline, coastal, shelf and deep ocean zones. Sea-level anomaly data from the Sentinel-3A mission were corrected using the tidal heights predicted by each model. The root mean square values of the sea level anomalies were then compared. According to the results, FES2012 compares more favorably to other models with root mean square (RMS) values of 10.9 cm and 7.7 cm over the coastal and shelf zones, respectively. In the deeper sections, the FES2014 model compares favorably at 7.5 cm. In addition, the impact of sudden fluctuations in bottom topography on model performances suggest that a combination of bathymetric variations and proximity to the coast or islands contributes to tidal height prediction accuracies of the models.

Download Full-text

Impact of Extracorporeal Photochemotherapy on the Clinical and Economical Management of Patients Affected with GVHD.

Blood ◽

10.1182/blood.v104.11.5293.5293 ◽

2004 ◽

Vol 104 (11) ◽

pp. 5293-5293

Author(s):

Cesare Perotti ◽

Paola Isernia ◽

Claudia Del Fante ◽

Gianluca Viarengo ◽

Daniela Bressan ◽

...

Keyword(s):

Quality Of Life ◽

Side Effects ◽

Cost Analysis ◽

Short Form ◽

Extracorporeal Photochemotherapy ◽

Short Period ◽

The Impact ◽

Economical Advantage

Abstract Extracorporeal photochemotherapy (ECP) is an effective, relatively new technique, FDA approved for cutaneous T-cell lymphoma, employed as second-third line treatment in patients affected with GVHD not or poorely responsive to standard immunosuppressive drugs. Both aGVHD and cGVHD are the major complications after stem cell transplantation (till to 50% and 80% of the patients, respectively). Corticosteroids, cyclosporine, micofenolate, tacrolimus and various experimental monoclonal antibodies (anti CD40 ligand, anti TNFα etc) are the drugs employed to control GVHD and are burdened with important short and long term side effects. Recently we revised our data about 102 pts (children and adults) treated by ECP in our Institution. The overall response was 75%, permitting to taper or suspend the immunosuppressive therapy (IST) in 67.6% of the pts. The economical and social impact (cost analysis and quality of life) of ECP vs standard IST was calculated basing on the National Price List and on Short Form Quality of Life (QoL) Scoring System. The cost of ECP comprehensive of the leukapheresis procedure, waste matherials and dedicated personnel was estimated as 684.51 Euro/procedure. On the other side, when the solely costs of the most common IST drugs (corticosteroids, cyclosporine) were considered for 5 months of treatment, an evident and obvious economical advantage emerged (120,3 E). On the contrary, when the costs of hospitalisation and day hospital regimen derived from the most common side effects related to the solely use of IST were included in our cost analysis studies, an economical advantage for long term ECP treatment (calculated on 16 procedures) was demonstrated (14952.16 E vs 17553 E). Moreover, when the “real life implication” calculated on the QoL parameters were considered, the advantages were more evident. In conclusion, the tie of respecting strictly an imposed program of budget calculated on the short period may exert an inhibitory effect in introducing new diagnostic or therapeutic procedures ignoring that the improvement or the cure of the patient has always a positive economical counterpart, expecially when the impact of a new technology is considered in a long term view.

Download Full-text

An Assessment of the Impact That Chemotherapy Treatment Has on Employment Status in Individuals with Lymphoma.

Blood ◽

10.1182/blood.v108.11.5492.5492 ◽

2006 ◽

Vol 108 (11) ◽

pp. 5492-5492

Author(s):

Jeff Horn ◽

Ann T. Shaw

Keyword(s):

Side Effects ◽

Hodgkin’S Lymphoma ◽

Significant Proportion ◽

Hodgkin's Lymphoma ◽

Small Scale ◽

Main Theme ◽

Chemotherapy Treatment ◽

Working Age ◽

The Impact

Abstract A significant proportion of individuals undergoing treatment for lymphoma are of working age and are in employment prior to diagnosis and during subsequent chemotherapy treatment. This small-scale study seeks to explore the impact that chemotherapy treatments have on employment. Specifically, the reasons for the decision to continue to work or not, and any perceived benefits or disadvantages encountered as a result are explored. Methods: All individuals presenting with newly diagnosed lymphoma, over a 12 month period, were identified retrospectively. Individuals of official working age, and who were receiving out-patient chemotherapy (i.e. who had the ability to be working at the time) were invited to participate. Participants were asked to complete a questionnaire that was designed to explore their experiences of employment during this time. Results: A total of 33 patients were invited to participate. A return rate of 70% was achieved. Of those who responded, 5 (22%) had already retired prior to diagnosis. A total of 12 patients (52%) continued to work during their chemotherapy treatment. Of these, 6 (50%) continued to work the same hours in the same conditions, whereas 6 (50%) worked an altered or flexible pattern. 6 patients (26%) stopped working for the duration of treatment, one of whom has not returned since. There were no obvious differences in patients with Hodgkin’s Lymphoma as opposed to Non-Hodgkin’s Lymphoma. The response rate was much higher in those who had received intravenous chemotherapy than oral preparations, preventing analysis of any potential variation in experiences. The qualitative data obtained gives a clearer insight into the many issues faced by the patient when undergoing chemotherapy treatment. Familiar themes were identified in many cases, and these were grouped into 5 main theme categories: Diversion from the reality of diagnosis and treatment Psychological Issues Issues of retained normality Practical Issues Physical or medical issues. Difficulty in coping with the side-effects of treatment, particularly fatigue, were commonly cited. Emotional effects such as stress and anxiety were also alluded to. Despite this, those who continued to work reported benefit from retaining a normal lifestyle, gained support from co-workers and experienced a diversion of focus from treatment. Several of those who continued to work cited financial reasons for this decision. Feedback suggested that advice given by the health-care team was often lacking or inconsistent. This did not reflect our perception of current practice, so it may suggest that it is the way that information is given that is ineffective. Conclusion: The majority of patients continued to work during their treatment and there appear to be many benefits to this. Difficulties encountered related mainly to treatment side-effects, logistical and practical problems associated with undergoing chemotherapy. It is envisaged that a greater understanding of the impact that lymphoma and its treatment has on employment may improve the level of support that can be offered by the multi-disciplinary team. The curative nature of many Lymphomas demands that long-term complications of the disease and treatment are fully addressed at the time of diagnosis. Social, economic and employment welfare are integral aspects to be considered, especially in a group of individuals who are likely to be long-term survivors.

Download Full-text

Patterns of fish calling in a nearshore environment in the Great Barrier Reef

Philosophical Transactions of the Royal Society B Biological Sciences ◽

10.1098/rstb.2000.0686 ◽

2000 ◽

Vol 355 (1401) ◽

pp. 1289-1293 ◽

Cited By ~ 75

Author(s):

Robert D. McCauley ◽

Douglas H. Cato

Keyword(s):

Great Barrier Reef ◽

Sound Production ◽

Local Environment ◽

Spatial Separation ◽

Activity Levels ◽

Barrier Reef ◽

Call Type ◽

Calling Patterns ◽

Noise Statistics

Long–term sea–noise statistics have been obtained from a region of the central section of the Great Barrier Reef. Fish calling was a major contributor to sea–noise levels. Calling was either in choruses, where groups of fishes called en masse , or as isolated calls repeated ad nauseam . Four calling types predominated, with each displaying unique call characteristics and calling patterns through time and space. Analysis of call types offered information on the fish's calling physiology, behaviour and, through the call's interaction with the local environment, on the location of the caller. Call types ranged from less than 10 ms to several seconds long, and were comprised from one to nearly 40 pulses. The structure of each pulse was related to swim–bladder mechanics; normally swim–bladders were lightly damped. Fish calling was most common during the Australian summer with one call type also displaying lunar trends. All calls had daily patterns of sound production with highest activity levels generally at night. There was some spatial separation of zones of highest call rates, but sources avoided competition for the ‘sound space’ primarily by offsetting the time of chorus or maximum call rate. On some occasions, a call type attributed to nocturnal planktivorous fishes may have ensonified much of the Great Barrier Reef.

Download Full-text