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You searched for: Journal Marine & freshwater research Remove constraint Journal: Marine & freshwater research Publication Year 2008 Remove constraint Publication Year: 2008 Source 2008 v.59 no.2 Remove constraint Source: 2008 v.59 no.2
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1. A field and experimental study on the tolerances of fish to Eucalyptus camaldulensis leachate and low dissolved oxygen concentrations

Author:
McMaster, Damien; Bond, Nick
Source:
Marine & freshwater research 2008 v.59 no.2 pp. 177-185
ISSN:
1323-1650
Subject:
Eucalyptus camaldulensis; dissolved organic carbon; dissolved oxygen; drying; environmental factors; ephemeral streams; fish; habitats; indigenous species; laboratory experimentation; leaching; plant litter; summer; water quality; Australia
Abstract:
... In intermittent streams, deteriorating water quality during drying influences fish survival but the specific effects of individual variables and their interactions are poorly known. During summer 2002 and 2004, fish were surveyed in isolated pools of two lowland intermittent streams in south-east Australia. Despite a low dissolved oxygen (DO, range = 0.4-6.8 mg L⁻¹) and high dissolved organic carb ...
DOI:
10.1071/MF07140

2. Density and size of reef fishes in and around a temperate marine reserve

Author:
Kleczkowski, Matt; Babcock, Russ C.; Clapin, Geordie
Source:
Marine & freshwater research 2008 v.59 no.2 pp. 165-176
ISSN:
1323-1650
Subject:
Glaucosoma; biomass; bycatch; females; fish; males; mortality; predation; predators; protogyny; sex ratio; sport fishing; Western Australia
Abstract:
... The effects of marine reserve protection on the density, size, biomass, sex-ratio and overall assemblage structure of reef fishes were investigated at Kingston Reef Sanctuary, Rottnest Island, Western Australia. Significant trends in response to reserve protection were found for two species of top predators and several serially protogynous labrid species. The relative density and biomass of the he ...
DOI:
10.1071/MF07093

3. Development of the pharyngeal dentition of two herbivorous halfbeaks (Teleostei : Hemiramphidae) and implications for the hemiramphid ontogenetic trophic shift

Author:
Tibbetts, Ian R.; Day, Ryan D.; Carseldine, Lee
Source:
Marine & freshwater research 2008 v.59 no.2 pp. 117-124
ISSN:
1323-1650
Subject:
Hyporhamphus regularis ardelio; diet; fish; herbivores; hypertrophy; ontogeny; teeth
Abstract:
... Development of the pharyngeal dentition of two herbivorous halfbeaks, Hyporhamphus regularis ardelio (Whitley, 1931) and Arrhamphus sclerolepis krefftii (Steindachner, 1867), was examined quantitatively to assess features that might confer their ability to shift their diet from animal to plant material. Toothed area, tooth number, maximum tooth diameter and tooth wear area in both pharyngeal tooth ...
DOI:
10.1071/MF07026

4. Effects of freshwater flow on the year-class strength of a non-diadromous estuarine finfish, king threadfin (Polydactylus macrochir), in a dry-tropical estuary

Author:
Halliday, Ian A.; Robins, Julie B.; Mayer, David G.; Staunton-Smith, Jonathan; Sellin, Michelle J.
Source:
Marine & freshwater research 2008 v.59 no.2 pp. 157-164
ISSN:
1323-1650
Subject:
Acetes; Lates calcarifer; Polydactylus; climate change; eggs; estuaries; estuarine fish; freshwater; humans; infrastructure; linear models; population size; postlarvae; rain; salinity; spring; summer; wet season; Australia
Abstract:
... The year-class strength of the commercial catch of king threadfin (Polydactylus macrochir (Gunther, 1876)) was correlated with freshwater flows into a dry-tropical estuary over five consecutive years. The year-class strength of king threadfin, a non-diadromous estuarine species, fluctuated and correlated significantly with freshwater flow and coastal rainfall in spring and summer; a result similar ...
DOI:
10.1071/MF07077

5. Food resource variability in an Australian dryland river: evidence from the diet of two generalist native fish species

Author:
Sternberg, David; Balcombe, Stephen; Marshall, Jonathan; Lobegeiger, Jaye
Source:
Marine & freshwater research 2008 v.59 no.2 pp. 137-144
ISSN:
1323-1650
Subject:
diet; primary productivity; Crustacea; energy; aquatic insects; arid lands; rivers; food consumption; food quality; hydrology; fish; indigenous species; Macquaria; Queensland
Abstract:
... To examine how food resource availability links with natural variation in primary productivity in the Moonie River, south-west Queensland, the diets of two native Australian fish species (Nematalosa erebi and Macquaria ambigua) were examined from fifteen waterholes in February, May and September 2006. N. erebi diets reflected strong 'boom and bust' patterns of food consumption, with high concentra ...
DOI:
10.1071/MF07125

6. Impacts of prior mis-specification on Bayesian fisheries stock assessment

Author:
Chen, Yong; Sun, Chi-Lu; Kanaiwa, Minoru
Source:
Marine & freshwater research 2008 v.59 no.2 pp. 145-156
ISSN:
1323-1650
Subject:
ecosystems; fisheries; normal distribution; uncertainty; Maine
Abstract:
... One of the key features of a Bayesian stock assessment is that the modeller needs to provide knowledge on model parameters. Priors summarise modellers' understanding of model parameters and are often defined by a probability distribution function. Priors are often mis-specified with arbitrary and unrealistic accuracy and precision in perceiving the state of nature for the parameters as a result of ...
DOI:
10.1071/MF07126

7. Phytoplankton community relationship to environmental variables in three Kenyan Rift Valley saline-alkaline lakes

Author:
Schagerl, Michael; Oduor, S.O.
Source:
Marine & freshwater research 2008 v.59 no.2 pp. 125-136
ISSN:
1323-1650
Subject:
temporal variation; silica; phytoplankton; community structure; Synechocystis; indicator species; lakes; variance; cluster analysis; environmental factors; water temperature; Arthrospira platensis; nitrates; alkalinity; hydrochemistry; biomass; Arthrospira fusiformis; conservation areas; phosphorus
Abstract:
... Temporal changes in total alkalinity, ionic composition and nutrient concentrations were studied in the saline, alkaline endorheic Kenyan Rift Valley Lakes Bogoria, Nakuru and Elmentaita to understand the association of these variables with phytoplankton community structure. In total, 24 taxa were found, with L. Bogoria having the fewest species. Although the cyanobacterium Arthrospira fusiformis ...
DOI:
10.1071/MF07095

8. Seasonal flooding, instream habitat structure and fish assemblages in the Mulgrave River, north-east Queensland: towards a new conceptual framework for understanding fish-habitat dynamics in small tropical rivers

Author:
Rayner, Thomas S.; Pusey, Bradley J.; Pearson, Richard G.
Source:
Marine & freshwater research 2008 v.59 no.2 pp. 97-116
ISSN:
1323-1650
Subject:
Awaous; dry season; fish; floodplains; habitats; migratory behavior; models; rivers; sediments; streams; temporal variation; tropics; vegetation; wet season; Brazil; Costa Rica; Queensland
Abstract:
... Strong relationships between seasonal flooding, instream habitat structure and fish assemblages have been well documented in large tropical rivers (e.g. the flood pulse concept). However, the mechanics of these relationships are likely to differ substantially in smaller coastal rivers, such as those in Costa Rica, south-east Brazil and Australia's Wet Tropics. These systems typically feature steep ...
DOI:
10.1071/MF07129