Sea temperatures in many tropical regions have increased by almost 1°C
over the past 100 years, and are currently increasing at ~1–2°C
per century. Coral bleaching occurs when the thermal tolerance of corals and
their photosynthetic symbionts (zooxanthellae) is exceeded. Mass coral
bleaching has occurred in association with episodes of elevated sea
temperatures over the past 20 years and i...... hiện toàn bộ
Seasonal change in temperature has a profound effect on reproduction in fish. Increasing temperatures cue reproductive development in spring-spawning species, and falling temperatures stimulate reproduction in autumn-spawners. Elevated temperatures truncate spring spawning, and delay autumn spawning. Temperature increases will affect reproduction, but the nature of these effects will dep...... hiện toàn bộ
For a majority of aquatic ecosystems, respiration (R)
exceeds autochthonous gross primary production (GPP). These systems have
negative net ecosystem production
([NEP]=[GPP]–R) and
ratios of [GPP]/R of <1. This net
heterotrophy can be sustained only if aquatic respiration is subsidized by
organic inputs from the catchment. Such subsidies imply that organic materials
that escaped decomp...... hiện toàn bộ
Hypotheses to explain the source of the 1011 tons of
salt in groundwaters of the Murray Basin, south-eastern Australia, are
evaluated; these are (a) mixing with original sea water,
(b) dissolution of salt deposits,
(c) weathering of aquifer minerals and
(d) acquisition of solutes via rainfall. The total
salinity and chemistry of many groundwater samples are similar to sea-water
compositio...... hiện toàn bộ
Arthur N. Popper, John Ramcharitar, Steven E. Campana
Otoliths are of interest to investigators from several disciplines including systematics, auditory neuroscience, and fisheries. However, there is often very little sharing of information or ideas about otoliths across disciplines despite similarities in the questions raised by different groups of investigators. A major purpose of this paper is to present otolith-related questions common ...... hiện toàn bộ
A. I. Robertson, Stuart E. Bunn, Paul I. Boon, Kate F. Walker
This paper reviews research on fluxes of carbon in Australian floodplain
rivers. Except where cover is absent, and in-stream gross primary production
is >1 gC m–2 day–1
and ratios of production to respiration are >1, riparian sources dominate
carbon pools in catchment streams. On floodplains, primary production by river
red gum (Eucalyptus camaldulensis) forests is ~600
gC m–2 year–...... hiện toàn bộ
Five species of abalone occur along the southern Australian coastline; of these three species, Haliotis laevigata Donovan, Haliotis roei Gray, and Haliotis ruber Leach, are of commercial importance; the other two species are Haliotis cyclobates Peron and Haliotis scalaris Leach. The habitat, movement, feeding behaviour, food, and ecological relationships with predators were studied for eac...... hiện toàn bộ
A mathematical model is proposed for the movement of water and sediments in Coral Creek. a tidal creek surrounded by thickly vegetated mangrove wamps in Missionary Bay at the northern end of Hinchinbrook Island, northern Queensland. It is shown that a net down-stream longitudinal current through mangrove swamps exists and is responsible for rapidly carrying away organic detritus (e.g. fall...... hiện toàn bộ
Bronwyn M. Gillanders, Travis S. Elsdon, Ian Halliday, Gregory P. Jenkins, Julie B. Robins, F.J. Valesini
Estuaries are especially vulnerable to the impacts of climate change because changes in climatic and hydrologic variables that influence freshwater and marine systems will also affect estuaries. We review potential impacts of climate change on Australian estuaries and their fish. Geographic differences are likely because southern Australian climates are predicted to become warmer and drier...... hiện toàn bộ
A review of the literature suggests that river discharge plumes strongly influence fish larvae and may play a significant role in the recruitment of local fishes. Some rivers drain large land masses to discharge shallow, turbid and nutrient-rich plumes that interact with ocean currents as well as with local oceanography and meteorology; these plumes may extend hundreds of kilometres offsho...... hiện toàn bộ