scholarly journals Echinoderms from the northern region of the Great Barrier Reef, Australia

1976 ◽  
Vol 30 ◽  
pp. 103-144 ◽  
Keyword(s):  
Great Barrier Reef ◽  
Northern Region ◽  
Barrier Reef

Regional patterns in reproductive biology of Lethrinus miniatus on the Great Barrier Reef

2006 ◽  
Vol 57 (4) ◽  
pp. 403 ◽  
Author(s):  
A. J. Williams ◽  
C. R. Davies ◽  
B. D. Mapstone
Keyword(s):  
Great Barrier Reef ◽  
Reproductive Biology ◽  
Population Biology ◽  
Sex Change ◽  
Fish Population ◽  
Northern Region ◽  
Spawning Season ◽  
Barrier Reef ◽  
Regional Patterns ◽  
Size Limits

Uniformity in fish population biology is a common assumption in many fishery assessments and management arrangements. Although spatial patterns in population biology are often unknown, ignorance of significant variation within a fished stock has profound implications for fishery assessments and management. In the current paper, the reproductive biology of an exploited reef fish, Lethrinus miniatus, was examined for populations in the northern and southern regions of the Great Barrier Reef (GBR). Significant regional variation was observed in some reproductive parameters, but not others. In the northern region, the proportion of spawning females observed during the spawning season was significantly greater and the size at sex change significantly smaller than in the southern region. However, the spawning season, age at sex change and sex ratios did not differ significantly between the northern and southern regions. Size and age at maturity could not be estimated from either of these regions, but an estimate was obtained from the Capricorn–Bunker region at the southern tip of the GBR. The observed regional patterns in reproductive biology of L. miniatus populations have important implications for specific management arrangements such as size limits and seasonal closures, and for fisheries management in general.

Macrofauna of the intertidal sand flats on low wooded islands, northern Great Barrier Reef

1978 ◽  
Vol 284 (999) ◽  
pp. 81-97 ◽  
Keyword(s):  
Great Barrier Reef ◽  
Intertidal Zone ◽  
Northern Region ◽  
Barrier Reef ◽  
Muddy Sand ◽  
Intertidal Sand ◽  
Fine Deposit ◽  
Sand Flats

An account of the macrofauna inhabiting the mobile substrata of the intertidal zone on low wooded islands in the Northern Region of the Great Barrier Reef Province is given. Excluding mangrove habitats, three main sediment-fauna types can be recognized: (i) well sorted sands forming the sloping beaches of sand cays, colonized by Ocypode , mesodesmatids and hippids; (ii) muddy sand flats supporting a very diverse fauna dominated in most areas by Edwardsia and chaetopterids; and (iii) areas of fine deposit, characterized by Uca, Gafrarium and Marphysa . Some associations of animals, chiefly involving commensal polychaetes and bivalves, are described.

Management of Water Quality in the Great Barrier Reef Marine Park

1989 ◽  
Vol 21 (2) ◽  
pp. 31-38 ◽  
Author(s):  
Simon Woodley
Keyword(s):  
Water Quality ◽  
Coral Reef ◽  
Great Barrier Reef ◽  
Barrier Reef ◽  
Management Issue ◽  
Reef System ◽  
Marine Park ◽  
World Heritage List ◽  
The World ◽  
Coral Reef System

The Great Barrier Reef is the largest coral reef system in the world. It is recognised and appreciated worldwide as a unique environment and for this reason has been inscribed on the World Heritage List. The Reef is economically-important to Queensland and Australia, supporting substantial tourism and fishing industries. Management of the Great Barrier Reef to ensure conservation of its natural qualities in perpetuity is achieved through the establishment of the Great Barrier Reef Marine Park. The maintenance of water quality to protect the reef and the industries which depend on it is becoming an increasingly important management issue requiring better knowledge and possibly new standards of treatment and discharge.

Circulation and water mass characteristics of the southern Great Barrier Reef

1994 ◽  
Vol 45 (1) ◽  
pp. 1 ◽  
Author(s):  
JH Middleton ◽  
P Coutis ◽  
DA Griffin ◽  
A Macks ◽  
A McTaggart ◽  
...  
Keyword(s):  
Great Barrier Reef ◽  
Heat Loss ◽  
Barrier Reef ◽  
Low Oxygen ◽  
Geostrophic Balance ◽  
Shelf Slope ◽  
High Nutrient ◽  
Slope Currents ◽  
North And South ◽  
Upper Slope

Data acquired during a winter (May) cruise of the RV Franklin to the southern Great Barrier Reef indicate that the dynamics of the shelf/slope region are governed by the tides, the poleward-flowing East Australian Current (EAC), and the complex topography. Over the Marion Plateau in water deeper than - 100 m, the EAC appears to drive a slow clockwise circulation. Tides appear to be primarily responsible for shelf/slope currents in the upper layers, with evidence of nutrient uplift from the upper slope to the outer shelf proper in the Capricorn Channel. Elsewhere, the bottom Ekrnan flux of the strongly poleward-flowing EAC enhances the sloping isotherms associated with the longshore geostrophic balance, pumping nutrient-rich waters from depth to the upper continental slope. Generally, shelf waters are cooler than oceanic waters as a consequence of surface heat loss by radiation. A combination of heat loss and evaporation from waters flowing in the shallows of the Great Sandy Strait appears to result in denser 'winter mangrove waters' exporting low-oxygen, high-nutrient waters onto the shelf both north and south of Fraser Island; these subsequently mix with shelf waters and finally flow offshore at - 100 m depth, just above the salinity-maximum layer, causing anomalous nutrient values in the region of Fraser Island.

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