Nitrogen Fixation by Blue-green Algae of the Lizard Island Area of the Great Barrier Reef

1976 ◽  
Vol 3 (1) ◽  
pp. 41 ◽  
Author(s):  
RH Burris
Keyword(s):  
Great Barrier Reef ◽  
Green Algae ◽  
Rock Surface ◽  
Barrier Reef ◽  
Fixed Nitrogen ◽  
Blue Green Algae ◽  
Average Ratio ◽  
Island Area ◽  
Partial Pressures ◽  
Lizard Island

Reduction of acetylene and 15N2 by blue-green algae and other organisms from the Lizard Island area of the Great Barrier Reef was measured. The effects of storage of the algae, the partial pressures of acetylene and oxygen, and light intensity were studied. The average ratio of acetylene to N2 reduced was 1.9. With this factor, it was calculated that 6.8 - 30.6 kg nitrogen was fixed annually per hectare of rock surface in the intertidal zone. Fixation of nitrogen by blue-green algae can contribute a substantial portion of the fixed nitrogen required for maintaining the flora and fauna of the coral reef community.

A survey of Mysida from the Lizard Island area, Great Barrier Reef, Australia, Subfamily Siriellinae (Crustacea, Mysida, Mysidae)

Zootaxa ◽  
2009 ◽  
Vol 2114 (1) ◽  
pp. 1-49
Author(s):  
M. SUZETTE TALBOT
Keyword(s):  
Great Barrier Reef ◽  
Barrier Reef ◽  
Island Area ◽  
Lizard Island

Ten species of Siriellinae mysids including Siriella lacertilis sp. nov., and one Rhopalophthalminae mysid are reported from the Lizard Island area of the Great Barrier Reef, Australia.

Blue-green algae associated with ascidians of the Great Barrier Reef

Nature ◽  
1975 ◽  
Vol 253 (5492) ◽  
pp. 533-534 ◽  
Author(s):  
ELDON H. NEWCOMB ◽  
THOMAS D. PUGH
Keyword(s):  
Great Barrier Reef ◽  
Green Algae ◽  
Barrier Reef ◽  
Blue Green Algae

scholarly journals Wandinidae

Zootaxa ◽  
2009 ◽  
Vol 2260 (1) ◽  
pp. 927-930
Author(s):  
J. K. LOWRY ◽  
H. E. STODDART
Keyword(s):  
Great Barrier Reef ◽  
Barrier Reef ◽  
Living Coral ◽  
Tree Island ◽  
Lizard Island

One species of wandinid amphipod is reported from the Great Barrier Reef, Queensland, Australia. Wandin griffini Lowry & Stoddart is known from Lizard Island, One Tree Island and reefs on the Outer Barrier, living among rubble usually at the base of living coral. The species is rare in this habitat.

A new species of Stephanostomum Looss, 1899 (Digenea, Acanthocolpidae) with a bizarre oral sucker: S. adlardi sp. nov. from the common coral trout Plectropomus leopardus (Lacepède, 1802) (Perciformes, Serranidae) from Lizard Island, Great Barrier Reef

2007 ◽  
Vol 52 (3) ◽  
Author(s):  
Rodney Bray ◽  
Thomas Cribb ◽  
Andrea Waeschenbach ◽  
D. Littlewood
Keyword(s):  
New Species ◽  
Great Barrier Reef ◽  
Oral Sucker ◽  
Ribosomal Rna ◽  
Barrier Reef ◽  
Coral Trout ◽  
Lizard Island ◽  
The Common ◽  
Plectropomus Leopardus ◽  
A New Species

AbstractA new species of Acanthocolpidae, Stephanostomum adlardi is described from the serranid Plectropomus leopardus from Lizard Island in the northern Great Barrier Reef. It differs from all previously described acanthocolpids in the structure of the oral sucker which is extended into dorsal and ventral lobes each bearing a row of spines. A phylogenetic tree estimated from combined nuclear small and partial large ribosomal RNA gene sequences shows that, despite the unusual oral sucker structure, the species is a true member of the genus Stephanostomum. The molecular results also suggest that Monostephanostomum nolani is derived from within Stephanostomum.

scholarly journals Studies on Nitrogen Fixation by Blue-Green Algae

1942 ◽  
Vol 19 (1) ◽  
pp. 78-87
Author(s):  
G. E. FOGG
Keyword(s):  
Nitrogen Fixation ◽  
Green Algae ◽  
Anabaena Cylindrica ◽  
Fixed Nitrogen ◽  
Blue Green Algae ◽  
Combined Nitrogen

1. Anabaena cylindrica Lemin. has been obtained in pure unialgal bacteria-free culture. 2. Due precautions having been taken against contamination by other organisms and error due to absorption of fixed nitrogen from the atmosphere, this alga has been shown to possess the capacity of fixing nitrogen. 3. Nitrogen fixation does not take place in the presence of a sufficient quantity of readily available combined nitrogen.

Population estimates and size structure of Plectropomus leopardus (Pisces : Serranidae) in relation to no-fishing zones: mark-release-resighting and underwater visual census

2000 ◽  
Vol 51 (3) ◽  
pp. 221 ◽  
Author(s):  
D. C. Zeller ◽  
G. R. Russ
Keyword(s):  
Great Barrier Reef ◽  
Population Size ◽  
Size Structure ◽  
Barrier Reef ◽  
Visual Census ◽  
Underwater Visual Census ◽  
Coral Trout ◽  
Population Size Estimates ◽  
Lizard Island ◽  
Plectropomus Leopardus

A mark–release–resighting (MRR) technique was used to estimate population size of the coral trout, Plectropomus leopardus, on coral reefs fringing Lizard Island, Great Barrier Reef, Australia. Fish were captured by hook-and-line fishing, and marked with individual freeze-brand numbers in August 1995. An underwater visual census (UVC) technique was used during September and October 1995 both for resighting of marked fish and to make an independent estimate of fish density and thus population size. The study area was 750 966 m2 . The UVC sampled 154 000 m2 (20.5%) of this area. Six different methods of analysis of MRR gave similar population size estimates (e.g. Petersen 12 873; 95% CI 9989–15 754) extrapolated to the 4.5 million-m2 reef area from datum to 20-m depth around Lizard Island. UVC gave a population size estimate (24 182; 95% CI 21 860–26 504) twice that of MRR. The lower estimate derived from MRR may be the result of tag-induced mortality, or of the relative difficulty in discriminating between marked and unmarked trout by UVC. This is only the second estimate of population size of coral trout on an area of the Great Barrier Reef.

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