Marine and Freshwater Research
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Origin of dissolved salts in a large, semi-arid groundwater system: Murray Basin, Australia
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... ...
Marine and Freshwater Research - Tập 52 Số 1 - Trang 41 - 2001
Hydrodynamics of a tidal creek-mangrove swamp system.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... ...
Marine and Freshwater Research - Tập 31 Số 4 - Trang 431 - 1980
Abundance, Diet and predators of juvenile banana prawns, Penaeus merguiensis, in a tropical mangrove estuarySampling of Penaeus merguiensis de Man with a variety of nets in several microhabitats of a small mangrove-lined estuary near Townsville on seven occasions during 1985 and 1986 captured only one adult prawn. Juveniles of 1-21 mm carapace length (CL) entered the mangrove forest at high tide throughout the year in concentrations up to 0.45 m-3. The mean density of juveniles (3-23 mm CL) in s... ...
Marine and Freshwater Research - Tập 39 Số 4 - Trang 467 - 1988
Dinoflagellates in the Australian Region.In this paper, the taxonomy of the dinoflagellates found in Australian
waters is given, and the species concept as applied to the group is discussed.
It is suggested that the Linnaean species concept cannot be strictly applied to
a group which has, as a whole, no known sexual process and of which the vast
majority of forms has not been cultivated.
The seasonal variation and fluctuations of... ...
Marine and Freshwater Research - Tập 5 Số 2 - Trang 171 - 1954
Predation by southern sea lions (Otaria flavescens) on artisanal fishing catches in UruguaySouthern sea lions (Otaria flavescens) forage in coastal fishery grounds in shallow waters, where they interact with coastal fishing activities. The main objective of this research was to evaluate the predation of southern sea lions on artisanal fishery catches and thus determine whether interactions with sea lions affected catches. Between July 1997 and March 1998, we observed 53 fishing ... ...
Marine and Freshwater Research - Tập 53 Số 8 - Trang 1161 - 2002
Adaptive management for water quality planning - from theory to practice
Adaptive management has been promoted as a structured approach to learning in response to the uncertainty associated with managing complex systems. We developed and tested a protocol to guide an adaptive approach to water quality management in north-eastern Australia. The protocol articulates a framework for documenting uncertainties and performance expectations, negotiating feedback and... ...
Marine and Freshwater Research - Tập 60 Số 11 - Trang 1189 - 2009
Threatening processes and conservation management of endemic freshwater fish in the Mediterranean basin: a reviewMediterranean endemic freshwater fish are among the most threatened biota in the world. The Mediterranean basin has experienced substantial reductions in precipitation and water availability, which will worsen with climate change. Current water policy is directed to increase water-supply demands, especially for agriculture, and not to improve water-use efficiency and implement integrated a... ...
Marine and Freshwater Research - Tập 62 Số 3 - Trang 244 - 2011
Assessing wetland degradation and loss of ecosystem services in the Niger Delta, NigeriaThe Niger Delta, being the most extensive freshwater wetland and aquatic ecosystem in West Africa, provides numerous services both to local people and to the West African economy. Ongoing environmental pressure exerted by large-scale oil extraction and illegal timber logging, however, are suspected to have had a substantial impact on the Delta’s ecosystems over the last decades. Knowledge ... ...
Marine and Freshwater Research - Tập 67 Số 6 - Trang 828 - 2016
Spatio-temporal dynamics of fish feeding in the lower Mulgrave River, north-eastern Queensland: the influence of seasonal flooding, instream productivity and invertebrate abundance
Wet-season flooding causes dietary shifts in tropical freshwater fish by regulating instream productivity, habitat structure and food availability. These dynamics have been comprehensively documented worldwide, but data are limited for Australia’s Wet Tropics rivers. The aim of the present study was to extend our earlier fish–habitat model for these systems by examining the role of troph... ...
Marine and Freshwater Research - Tập 60 Số 2 - Trang 97 - 2009
Carbon in catchments: connecting terrestrial carbon losses with aquatic metabolism
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... ...
Marine and Freshwater Research - Tập 52 Số 1 - Trang 101 - 2001
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