scholarly journals Organic matter bioavailability in tropical coastal waters: The Great Barrier Reef

2017 ◽  
Vol 63 (2) ◽  
pp. 1015-1035 ◽  
Author(s):  
Christian Lønborg ◽  
Xosé Antón Álvarez-Salgado ◽  
Samantha Duggan ◽  
Cátia Carreira
Keyword(s):  
Organic Matter ◽  
Great Barrier Reef ◽  
Coastal Waters ◽  
Barrier Reef

Description of Gnathia maculosa and a new record of Gnathia trimaculata (Crustacea, Isopoda, Gnathiidae), ectoparasites of elasmobranchs from Okinawan coastal waters

Zootaxa ◽  
2009 ◽  
Vol 2114 (1) ◽  
pp. 50-60 ◽  
Author(s):  
YUZO OTA ◽  
EUICHI HIROSE
Keyword(s):  
Great Barrier Reef ◽  
Coastal Waters ◽  
New Record ◽  
Barrier Reef ◽  
Ryukyu Archipelago ◽  
Okinawa Island ◽  
Wide Range

Gnathia maculosa sp. nov. is described from males reared in a laboratory from larvae that were collected as ectoparasites on elasmobranchs, caught off Okinawa Island in the Ryukyu Archipelago, southwestern Japan. The species is most similar to G. trimaculata but it is distinguished from G. trimaculata by deeper and narrower dorsal sulcus, a narrower body, and the wider pylopod. Gnathia trimaculata, previously recorded from Great Barrier Reef, Australia, was also collected from elasmobranchs caught off Okinawa Island. The record of G. trimaculata from Okinawa indicates a wide range of the distribution of the gnathiids inhabiting elasmobranchs.

Towards environmental management of water turbidity within open coastal waters of the Great Barrier Reef

2013 ◽  
Vol 74 (1) ◽  
pp. 82-94 ◽  
Author(s):  
Rachael K. Macdonald ◽  
Peter V. Ridd ◽  
James C. Whinney ◽  
Piers Larcombe ◽  
David T. Neil
Keyword(s):  
Environmental Management ◽  
Great Barrier Reef ◽  
Coastal Waters ◽  
Barrier Reef ◽  
Water Turbidity

scholarly journals Dynamics of hypersaline coastal waters in the Great Barrier Reef

2011 ◽  
Vol 94 (4) ◽  
pp. 299-305 ◽  
Author(s):  
Fernando P. Andutta ◽  
Peter V. Ridd ◽  
Eric Wolanski
Keyword(s):  
Great Barrier Reef ◽  
Coastal Waters ◽  
Barrier Reef

Effect of terrestrial and marine humics on copper speciation in an estuary in the Great Barrier Reef Lagoon

1988 ◽  
Vol 39 (1) ◽  
pp. 19 ◽  
Author(s):  
GB Jones ◽  
FG Thomas
Keyword(s):  
Great Barrier Reef ◽  
Humic Substances ◽  
Coastal Waters ◽  
River Estuary ◽  
Barrier Reef ◽  
Wet Season ◽  
Reef Lagoon ◽  
Copper Speciation ◽  
High Concentrations ◽  
Monsoonal Season

Studies carried out over several years on a tropical estuary, the Ross River Estuary, have shown that copper speciation is influenced by both terrestrial and marine humic substances. While terrestrial humic substances are mobilized by high freshwater runoff in the monsoonal season, Trichodesmium blooms mobilize high concentrations of marine humics to the inshore zone and increase labile forms of copper. The marine humics are more soluble than the terrestrial humics and persist in coastal waters of the Great Barrier Reef lagoon for many months prior to the wet season.

Impact of wet season river flood discharge on phytoplankton absorption properties in the southern Great Barrier Reef region coastal waters

2017 ◽  
Vol 196 ◽  
pp. 379-386 ◽  
Author(s):  
Nagur Cherukuru ◽  
Vittorio E. Brando ◽  
David Blondeau-Patissier ◽  
Phillip W. Ford ◽  
Lesley A. Clementson ◽  
...  
Keyword(s):  
Great Barrier Reef ◽  
Coastal Waters ◽  
Barrier Reef ◽  
Wet Season ◽  
Absorption Properties ◽  
Flood Discharge ◽  
River Flood ◽  
Phytoplankton Absorption

Feeding of Holothuria atra and Stichopus chloronotus on bacteria, organic carbon and organic nitrogen in sediments of the Great Barrier Reef

1982 ◽  
Vol 33 (2) ◽  
pp. 255 ◽  
Author(s):  
DJW Moriarty
Keyword(s):  
Organic Matter ◽  
Organic Carbon ◽  
Great Barrier Reef ◽  
Organic Nitrogen ◽  
Bacterial Biomass ◽  
Gut Contents ◽  
Barrier Reef ◽  
Muramic Acid ◽  
Blue Green Algae ◽  
Carbon And Nitrogen

Organic carbon and nitrogen and bacterial biomass were measured in the sediments and gut contents of H. atra and S. chloronotuson the Great Barrier Reef. Organic carbon averaged from 3.4 to 4.7 mg g-1, organic nitrogen from 0.20 to 0.31 mg g-1 and muramic acid from 1.4 to 3.3�g g-1 dry weight of surface sandy sediments. Bacterial biomass, determined by muramic acid measurements, averaged 3-8% of organic carbon in the sediments; blue-green algae accounted for 3-7% of muramic acid. Significantly higher values of organic carbon and nitrogen and muramic acid were found in foregut contents of the holothurians, indicating selective feeding on organically rich components of the sediment. Carbon values were 16-34% higher in the foregut than in the sediment. nitrogen values 35-111% higher and muramic acid values 33-300% higher. These values indicate that bacteria and nitrogenous components of the organic matter were selectively eaten. Values for organic carbon and nitrogen and muramic acid were generally lower in the hindgut than in the foregut, due to digestion and assimilation. Assimilation efficiencies averaged 30% for organic carbon, 40% for organic nitrogen and 30-40% for muramic acid (bacteria). Detritus (non-living matter) probably constituted 60-80% of the organic matter in the sediment and thus the food of the holothurians.

scholarly journals Seasonal organic matter dynamics in the Great Barrier Reef lagoon: Contribution of carbohydrates and proteins

2017 ◽  
Vol 138 ◽  
pp. 95-105 ◽  
Author(s):  
Christian Lønborg ◽  
Jason Doyle ◽  
Miles Furnas ◽  
Patricia Menendez ◽  
Jessica A. Benthuysen ◽  
...  
Keyword(s):  
Organic Matter ◽  
Great Barrier Reef ◽  
Barrier Reef ◽  
Reef Lagoon ◽  
Organic Matter Dynamics
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