Sea-level controls on the post-glacial development of the Great Barrier Reef, Queensland

Carter, R.M; Johnson, David P.

doi:10.1016/0025-3227(86)90036-8

Cited by 63 publications

(33 citation statements)

References 49 publications

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“…It houses vast expanses of reeds and sedges which cover approximately 100000km 2 in area (Schneider 1980), although part of this has now been drained. Such occurrences are similar (apart from climatic and vegetational differences) to the floating Papyrus meadows of Africa near Lake Victoria and other banked-up lakes in Uganda (Eggeling 1935;Carter 1955;Lind and Visser 1962) and Tanzania (Lind and Morrison 1974). One of the largest wetlands of this kind occurs in southern Sudan, where the White Nile and its many tributaries branch out into the Papyrus and Vossia marshes of the El Sudd region (Hurst, 1933;Migahid 1974).…”

Section: Upper Delta and Alluvial Plain Swamps Marshes And Bogsmentioning

confidence: 92%

“…Transgressive coals are therefore considered to occur in the basal portions of parasequences. Evidence for the episodic nature of the post-glacial transgression in preference to a continuous sea-level rise has been provided by Carter et al (1985) from the terrigenoclastic shoreline of Otago in New Zealand and by Carter and Johnson (1986) from the Great Barrier Reef in Australia. In the latter case, ten transgressive episodes were recognised for the past 18 ka.…”

Section: Basic Concepts Of Sequence Stratigraphymentioning

confidence: 98%

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Coal-Bearing Depositional Systems

Diessel¹

1992

398

416

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Section: Upper Delta and Alluvial Plain Swamps Marshes And Bogsmentioning

confidence: 92%

Section: Basic Concepts Of Sequence Stratigraphymentioning

confidence: 98%

Coal-Bearing Depositional Systems

Diessel¹

1992

398

416

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“…10 000 yr ago, when sea levels commenced their rise to their present level ca. 6000 yr ago (Carter & Johnson 1986). Present genetic patterns, therefore, may be far from equilibrium with respect to migration and genetic drift and, rather than reflecting levels of current gene flow (or larval dispersal strategies), represent historical footprints (Benzie 1999) where gene flow was more open among reef populations.…”

Section: Discussionmentioning

confidence: 99%

Low genetic variability within and among populations of the brooding sponge Rhopaloeides odorabile on the central Great Barrier Reef

Whalan¹,

Nys²,

Smith-Keune³

et al. 2008

Aquat. Biol.

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The population genetic structure of the brooding sponge Rhopaloeides odorabile (Dictyoceratida) was examined at 3 polymorphic allozyme loci and the partial mitochondrial cytochrome oxidase sub-unit 1 gene (CO1) sequence (528 bp) from multiple sites across the central Great Barrier Reef (GBR), Australia. Distances between sampled sites ranged from a few 100 metres to 140 km. Observed levels of allozyme variation were generally low, and there were only minor differences in allozyme allele frequencies evident between sites. Likewise, levels of polymorphism for mtDNA CO1 were also low, with only 3 haplotypes found at this locus and with 1 of the 3 haplotypes present at all sites with frequencies ranging from 0.55 to 1.00. There was no obvious partitioning or structuring of the observed allozyme or CO1 genetic variance with spatial positioning of populations and no evidence in this sponge species for genetic differentiation between inner-and mid-reef sites. However, there was evidence against complete genetic panmixia across the central GBR, with 2 pairs of innerreef sites sampled in 2004 genetically differentiated from most other pairwise site comparisons, and both pairs were also different from single sites within a few 100 metres sampled in the previous year. When viewed together, nuclear and mtDNA markers indicate large-scale genetic admixture in this species, although there is some evidence for small, localised, genetic differences between some populations that might be determined by reef-specific hydrodynamics. This pattern is consistent with the endogenous recruitment expected from a brooding species and with dispersal that is infrequent enough to prevent divergence among populations. KEY WORDS: Brooding sponge · Larval dispersal · Genetic variability · ConnectivityResale or republication not permitted without written consent of the publisher OPEN PEN ACCESS CCESS

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“…The evidence for large scale land degradation in major river catchments of north Queensland is derived from both direct and indirect observations of erosion processes in the catchment areas and the downstream response in the form of enhanced estuarine and coastal sedimentation and deterioration in surface water quality. Comparative geomorphological and sedimentological assessments confirm the discharge of large volumes of sediments from fluvioestuarine systems to the Coral Sea since Holocene times (Carter and Johnson, 1986;Gagan, etal., 1989;Arakel, 1991). Sedimentological and hydrological evidence indicates the susceptibility of fine (clay and silt) and sand size material to removal during aperiodic storm events.…”

Section: Process-response Relationships In Land Degradationmentioning

confidence: 91%

Environmental consequences of land degradation in coastal drainage basins of north Queensland, Australia: Influence of farming practices

Arakel¹,

Loder²,

McConchie³

et al. 1993

Land Degrad Dev

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Views expressed by sugar cane farmers in the Johnstone Rivers system, north Queensland, are consistent with the broader community concern about the potentially adverse ecological effects of point source discharges to the Great Barrier Reef lagoon. The main fink between agricultural land use and the deterioration of surface and groundwater quality in the region is perceived by the farmers to be a consequence of the influence exerted by new farm management strategies and economic constraints on local environmental variables, particularly soils. The effectiveness of the land use practices in relation to land capability and productivity thresholds is considered by farmers to be essential for developing new farm management strategies and for improving water quality in the north Queensland coastal regions. As a result of increasing inhomogeneity of land use practices involving the application of chemicals, catchment based investigation, including systematic interviews with the land users, is needed for the development of reliable databases on problems related to the discharge of agricultural chemicals to coastal waters.

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Sea-level controls on the post-glacial development of the Great Barrier Reef, Queensland

Cited by 63 publications

References 49 publications

Coal-Bearing Depositional Systems

Coal-Bearing Depositional Systems

Low genetic variability within and among populations of the brooding sponge Rhopaloeides odorabile on the central Great Barrier Reef

Environmental consequences of land degradation in coastal drainage basins of north Queensland, Australia: Influence of farming practices

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