scholarly journals Movement of tagged juvenile tailor (Pomatomus saltatrix) in Moreton Bay, Queensland

1993 ◽  
Vol 44 (6) ◽  
pp. 811 ◽  
Author(s):  
RM Morton ◽  
I Halliday ◽  
D Cameron
Keyword(s):  
State Government ◽  
Coastal Waters ◽  
New South ◽  
Fork Length ◽  
Minimum Length ◽  
Fishing Mortality ◽  
Growth Data ◽  
Pomatomus Saltatrix ◽  
Moreton Bay ◽  
South Wales

Large quantities of tailor, Pomatomus saltatrix, are caught by recreational and commercial fishers in coastal waters off New South Wales and Queensland. Juvenile tailor were subject to increasing fishing mortality in Moreton Bay (Queensland) in the mid 1980s. A tagging programme, involving State Government fisheries biologists and amateur fishing clubs, was established in 1986 to examine the movement, growth rate and fisheries exploitation of juvenile tailor (<270 mm fork length) in Moreton Bay. Of 2173 juvenile tailor tagged in Moreton Bay during February-July and December 1987, 237 were recaptured over a period of 30 months, representing a recapture rate of 11%. This was a high recapture rate compared with those in similar finfish tagging studies carried out in Moreton Bay. The recaptured fish moved relatively short distances (mean�s.d., 10.2 � 15.0 km; maximum distance, 85 km). Growth data were unreliable. Estuaries such as Moreton Bay function as nursery areas for tailor prior to their movement onto open surf beaches as adult fish. A legal minimum length for tailor was introduced on the basis of this study.

Distribution of Tailor (Pomatomus saltatrix) Larvae along the Coast of New South Wales, Australia

1996 ◽  
Vol 47 (2) ◽  
pp. 331 ◽  
Author(s):  
AG Miskiewicz ◽  
BD Bruce ◽  
P Dixon
Keyword(s):  
Continental Shelf ◽  
Coastal Waters ◽  
East Coast ◽  
New South ◽  
New South Wales ◽  
Eastern Coast ◽  
Pomatomus Saltatrix ◽  
Outer Continental Shelf ◽  
Survey Period ◽  
South Wales

The distribution of tailor (Pomatomus saltatrix) larvae is described on the basis of the results of four plankton surveys undertaken in northern and central New South Wales (NSW) coastal waters. These comprised a single survey during May 1989 along the northern NSW coast and multiple surveys in January, March and May 1983 between Sydney and Brisbane. Pomatomus saltatrix larvae occurred throughout the survey period, with the highest abundances on the northern NSW coast. Most larvae were caught in mid and outer continental shelf waters at water temperatures of ≥22�C. The only known spawning locality for P. saltatrix is in the vicinity of Fraser Island in southern Queensland from August to October. The occurrence of larvae along the NSW coast from January to May indicates that the spawning season of P. saltatrix is more extensive than previously reported and that spawning occurs along the east coast of Australia in localities other than Fraser Island. Further surveys of larvae in southern Queensland and northern NSW waters, especially from August to December, are required to determine if P. saltatrix has one extended or two discrete spawning seasons along the eastern coast of Australia.

Sizes and ages in commercial landings with estimates of growth, mortality and yield per recruit of yellowtail kingfish (Seriola lalandi) from New South Wales, Australia

2004 ◽  
Vol 55 (5) ◽  
pp. 489 ◽  
Author(s):  
John Stewart ◽  
Douglas J. Ferrell ◽  
Bryan van der Walt
Keyword(s):  
Growth Rates ◽  
New South ◽  
New South Wales ◽  
Fork Length ◽  
South Wales ◽  
Current Minimum ◽  
Yellowtail Kingfish ◽  
Seriola Lalandi ◽  
Size At Age ◽  
Yield Per Recruit

The size and age compositions of yellowtail kingfish (Seriola lalandi) were studied in commercial landings in New South Wales, Australia between 1998 and 2000. The fishery was dominated by fish smaller than 65 cm fork length and these fish were estimated to be 2 and 3 year olds. Estimates of growth rates were made using size-at-age data from sectioned otoliths. The oldest yellowtail kingfish found was 21 years and measured 136 cm fork length. There were no differences in the growth rates between regions or between sexes. Yellowtail kingfish grow rapidly and reach their minimum legal length of 60 cm total length at around 2 years of age. These estimates showed that previous studies, which estimated ages using whole otoliths, may have underestimated the ages of older yellowtail kingfish. Total instantaneous mortality rates generated from catch curves ranged between 0.43 and 0.79. Yield per recruit models suggest that the population is currently growth overfished. The information provided is used to discuss the suitability of the current minimum legal length for yellowtail kingfish in New South Wales.

The Fleshy-footed Shearwater in New South Wales Coastal Waters

1958 ◽  
Vol 58 (2) ◽  
pp. 91-93 ◽  
Author(s):  
J. D. Gibson ◽  
A. R. Sefton
Keyword(s):  
Coastal Waters ◽  
New South ◽  
New South Wales ◽  
South Wales

Baseline trace metal concentrations in New South Wales coastal waters

1998 ◽  
Vol 49 (3) ◽  
pp. 203 ◽  
Author(s):  
Simon C. Apte ◽  
Graeme E. Batley ◽  
Ronald Szymczak ◽  
Paul S. Rendell ◽  
Randall Lee ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Trace Metal ◽  
Surface Waters ◽  
Coastal Waters ◽  
New South ◽  
New South Wales ◽  
Metal Concentrations ◽  
South Wales ◽  
The Pacific ◽  
The Pacific Ocean

Concentrations of ten trace elements at five localities in New South Wales coastal waters were measured by ultratrace sampling and analysis. Mean concentrations of cadmium (2.4 ng L-1), copper (31 ng L-1), nickel (180 ng L-1), lead (9 ng L-1) and zinc (<22 ng L-1) are among the lowest reported in the Southern Hemisphere and are consistent with recent oceanographic data for the surface waters of the Pacific Ocean. Waters from the southernmost sampling locality (Eden) contained higher phosphate, silicate, cadmium and nickel, but lower chromium concentrations than waters from the other four localities, reflecting the inputs of water from the Tasman Sea in the south compared with the dominance of waters from the Coral Sea along the rest of the coast. Cadmium concentrations were positively correlated with both phosphate and silicate. Chromium and lead concentrations were also significantly correlated. It is likely that a major source of lead is atmospheric deposition. The trace metal concentrations were comparable to those in the surface waters of the Pacific Ocean, indicating that fluvial inputs or processes occurring in the coastal margin were of limited importance in determining trace metal concentrations.

VICTORIANS LIVE: AUSTRALIA'S VICTORIAN VESTIGES

2006 ◽  
Vol 34 (1) ◽  
pp. 342-346
Author(s):  
Margaret Harris
Keyword(s):  
New South ◽  
New South Wales ◽  
Moreton Bay ◽  
South Wales ◽  
British Colonies

ON 1 JANUARY 1901, at the beginning of a new century, the Commonwealth of Australia was proclaimed a political entity by the federation of six separate British colonies. Queen Victoria's formal assent to the necessary legislation of the Westminster Parliament was one of her last official acts; she died on 22 January. For all the tyranny of 20,000 kilometres distance, the impress of the monarch on her far-flung colony was evident. Two of the states of the Commonwealth, Victoria and Queensland, had been named for her. When the Port Phillip settlement separated from New South Wales in 1851, it became Victoria; in 1859, when the Moreton Bay settlement also hived off, its first governor announced “a fact which I know you will all hear with delight–Queensland, the name selected for this new Colony, was entirely the happy thought and inspiration of Her Majesty herself!” (Cilento and Lack 161)

scholarly journals The impact of the COVID-19, social distancing, and movement restrictions on crime in NSW, Australia

Crime Science ◽  
2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Joanna J. J. Wang ◽  
Thomas Fung ◽  
Donald Weatherburn
Keyword(s):  
Time Series ◽  
State Government ◽  
Public Transport ◽  
New South ◽  
Business Activity ◽  
Domestic Assault ◽  
Freedom Of Movement ◽  
South Wales ◽  
The World ◽  
The Impact

AbstractThe spread of COVID-19 has prompted Governments around the world to impose draconian restrictions on business activity, public transport, and public freedom of movement. The effect of these restrictions appears to vary from country to country and, in some cases, from one area to another within a country. This paper examines the impact of the COVID-19 restrictions imposed in New South Wales (NSW) by the State Government. We examine week-to-week changes in 13 categories of crime (and four aggregated categories) from 2 January 2017 to 28 June 2020. Rather than using the pre-intervention data to make a forecast and then comparing that with what is actually observed, we use a Box–Jenkins (ARIMA) approach to model the entire time series. Our results are broadly in accord with those of other studies, but we find no effect of the lockdown (upward or downward) on domestic assault.

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