Relevant bibliographies by topics / Aquatic invertebrates Victoria

Academic literature on the topic 'Aquatic invertebrates Victoria'

Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Aquatic invertebrates Victoria"

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Chessman, BC. "Diet of the Murray Turtle, Emydura-Macquarii (Gray) (Testudines, Chelidae)." Wildlife Research 13, no. 1 (1986): 65. http://dx.doi.org/10.1071/wr9860065.

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Examination of the stomach contents of 122 E. macquarii from the Murray River, Lake Boga and other waters in northern Victoria and southern New South Wales showed that this species is an opportunistic omnivore. In order of decreasing importance the main food types were filamentous algae, vertebrate (mainly fish) carrion, detritus, periphyton (including sponges), mobile aquatic invertebrates, aquatic macrophytes and terrestrial invertebrates. There was a degree of dietary shift with turtle size, small specimens containing more detritus and periphyton and less filamentous algae, macrophytes and carrion than bigger ones. The diets of mature males and females did not differ appreciably. Diel changes in stomach content volumes indicated that E. macquarii feeds mainly during the daytime.
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O'Leary, P., PS Lake, R. Marchant, and TJ Doeg. "Macroinvertebrate activity in the water column of backwaters in an upland stream in Victoria." Marine and Freshwater Research 43, no. 6 (1992): 1403. http://dx.doi.org/10.1071/mf9921403.

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The activity of benthic invertebrates was monitored in the water column of slowly flowing backwaters of the Acheron River during summer. Samples were taken throughout 24 h on two occasions, and densities of fauna were compared with densities in drift samples taken concurrently in the main channel. Drift densities were generally higher than those in backwaters, but not by orders of magnitude. Also, drift densities displayed significant die1 variation, whereas densities in backwaters did not consistently show such a pattern. Species composition generally differed between the two habitats. This brief study demonstrates that benthic invertebrates do swim in the water column of stream backwaters and that they may use this opportunity for colonization.
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Marchant, R., D. Ryan, and L. Metzeling. "Regional and local species diversity patterns for lotic invertebrates across multiple drainage basins in Victoria." Marine and Freshwater Research 57, no. 7 (2006): 675. http://dx.doi.org/10.1071/mf06035.

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Regional (RSR) and local species richness (LSR) was recorded for stream invertebrate communities at reference sites in 25 drainage basins in Victoria. Regional species richness was defined as the total number of species recorded at all reference sites within a basin, and LSR as the total numbers of species recorded at a single reference site. Records were obtained from bank and channel habitats and analysed separately. Regressions between LSR and RSR indicated a proportional or linear relationship in both habitats. This applied to the whole data set and to subgroups representing Ephemeroptera, Plecoptera and Trichoptera (EPT as a group), Hemiptera, Diptera, and Coleoptera. All data sets thus represented communities in which no upper limit to LSR was observed. Multiple regressions between LSR and RSR, number of samples per site (N) and seven physical variables showed that RSR and N were nearly always significantly related to LSR. Few of the physical variables were significant except conductivity (for EPT and Coleoptera). Multidimensional scaling ordinations revealed an east-west gradient in compositional similarity of invertebrates, upon which variations in RSR had a major influence. Investigation of factors that regulate RSR will thus be necessary for a broad scale view of what regulates LSR.
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Marchant, R. "Vertical distribution of Benthic Invertebrates in the Bed of the Thomson River, Victoria." Marine and Freshwater Research 39, no. 6 (1988): 775. http://dx.doi.org/10.1071/mf9880775.

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The vertical distribution of the benthic fauna was studied at three sites on the Thomson River using a freeze-corer. Samples were taken over two years in early and late summer. At each site an average of 72 to 84% of the fauna was found in the 0-10 cm zone of the riverbed, 10-20% in the 10-20 cm zone and 6-8% in the 20-30 cm zone; flooding at one site was followed by an increase in the depth to which the fauna penetrated. Surface percentage abundances were probably underestimated because of the inability of the corer to sample surface rocks and their fauna consistently and because the coring operation disturbs the surface fauna to some extent before it can be frozen. Nevertheless, the results indicate that in the Thomson River the majority of the fauna is within the depth range (0-10 cm) of a Surber sampler.
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Kefford, Ben J., Dayanthi Nugegoda, Leon Metzeling, and Elizabeth J. Fields. "Validating species sensitivity distributions using salinity tolerance of riverine macroinvertebrates in the southern Murray–Darling Basin (Victoria, Australia)." Canadian Journal of Fisheries and Aquatic Sciences 63, no. 8 (August 1, 2006): 1865–77. http://dx.doi.org/10.1139/f06-080.

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Species sensitivity distributions (SSDs) are commonly used in risk assessment and in setting water quality guidelines, yet their predictions have not been validated against loss of species with increasing pollutant concentrations in nature. We used a rapid toxicity testing method to determine the acute salinity tolerance (72 h LC50 values (concentration of salinity lethal to 50% of individuals)) of 110 macroinvertebrate taxa from the southern Murray–Darling Basin in central Victoria, Australia, and construct an SSD. This SSD was compared with loss of riverine macro invertebrates species from increasing salinity in Victoria. Macroinvertebrate species richness per individual sample, when salinity was <9.9 mS·cm–1, was invariant of salinity. However, when species richness was calculated across multiple samples above about 0.3–0.5 mS·cm–1, it declined with increasing salinity. This decline was predicted from the SSD after application of a variable safety factor calculated from an exponential or quadratic equation. Our findings confirm that SSDs can predict the loss of freshwater macroinvertebrate species from increases in salinity. This suggests that SSDs may be useful more generally for other aquatic organisms, other stressors, and toxicants.
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Lada, Hania, Carla Neville, Briarna Lacey, Ralph Mac Nally, P. Sam Lake, and Andrea C. Taylor. "Historic and current genetic population structure in two pond-dwelling macroinvertebrates in massively altered Australian woodland landscapes." Marine and Freshwater Research 61, no. 11 (2010): 1318. http://dx.doi.org/10.1071/mf10053.

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Aquatic ecosystems around the world have been massively altered through vegetation clearance and changed flow regimes accompanying agricultural development. Impacts may include disrupted dispersal for aquatic species. We investigated this in lentic (standing) waterbodies in agricultural and predominantly forested landscapes of the box-ironbark region of central Victoria, Australia. We hypothesised that higher representation in forested than agricultural landscapes (i.e. ‘forest-bias’) for a species may reflect an ability to disperse more easily through the former, resulting in lower genetic structure in forested than in agricultural landscapes. Conversely, ‘cosmopolitan’ species would show no difference in genetic structure between landscape types. Molecular genetic analyses of a forest-biased diving beetle, Necterosoma wollastoni, and a cosmopolitan waterboatman, Micronecta gracilis, revealed the following, for both species: (1) no evidence for long-term barriers to gene flow in the region, (2) lack of contemporary genetic differentiation over 30 000 km2 and (3) random distribution of related genotypes in space, implying that neither forest nor farmland inhibits their dispersal in a concerted fashion. Taken together, these results indicate very high gene flow and dispersal in the past and present for both these species. Massive landscape change may have little impact on movement patterns of lentic invertebrates that have evolved high dispersal capabilities.
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Lake, P. S., I. A. E. Bayly, and D. W. Morton. "The phenology of a temporary pond in western Victoria, Australia, with special reference to invertebrate succession." Archiv für Hydrobiologie 115, no. 2 (May 2, 1989): 171–202. http://dx.doi.org/10.1127/archiv-hydrobiol/115/1989/171.

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Chessman, BC. "Dietary studies of Aquatic insects from two Victorian rivers." Marine and Freshwater Research 37, no. 2 (1986): 129. http://dx.doi.org/10.1071/mf9860129.

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A preliminary assessment of the feeding habits of 127 taxa of pre-imaginal Coleoptera, Diptera, Ephemeroptera, Plecoptera and Trichoptera from the La Trobe and Tanjil Rivers was made from analyses of digestive tract contents and observations of captive specimens. Ultrafine (<50 �n) detritus was the dominant material in gut contents of all five orders, and fine (< 1 mm, > 50 �lm) detritus (mostly leaf and wood fragments), benthic algae (especially diatoms) and remains of invertebrate prey were also important. Bacteria, fungi and planktonic algae were present in minor quantities. Many species were shown to be capable of shredding dead leaves and wood. Dietary diversity was particularly high in the families Elmidae, Chironomidae, Leptophlebiidae, Gripopterygidae and Leptoceridae.
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Reich, Paul, and Barbara J. Downes. "The distribution of aquatic invertebrate egg masses in relation to physical characteristics of oviposition sites at two Victorian upland streams." Freshwater Biology 48, no. 9 (August 20, 2003): 1497–513. http://dx.doi.org/10.1046/j.1365-2427.2003.01101.x.

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Morris, Liz, Gregory Jenkins, David Hatton, and Timothy Smith. "Effects of nutrient additions on intertidal seagrass (Zostera muelleri) habitat in Western Port, Victoria, Australia." Marine and Freshwater Research 58, no. 7 (2007): 666. http://dx.doi.org/10.1071/mf06095.

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Loss of seagrass habitat in many parts of the world has been attributed to increases in nutrient loading to nearshore areas. The role of excess epiphyte, macroalgal or phytoplankton growth in shading of seagrass leaves and negatively affecting seagrass health is generally agreed to be a prevalent mechanism in seagrass decline worldwide. In the present study nutrient addition experiments were undertaken at three sites in Western Port, Victoria. Nutrients were added to the water column using the controlled release fertiliser Osmocote™ in late summer 2005. The experiments ran for one month at two of the sites (Blind Bight and Hastings) and at the third site (Crib Point) the experiment ran for three months. Control and nutrient addition plots were monitored for concentrations of inorganic nutrients, number of seagrass leaves, seagrass, epiphyte and loose algal biomass and invertebrate faunal assemblages. Nutrient additions had increased ash free dry weight of seagrass leaves and loose algae at two of the three sites studied. There was also an increase in gammarid amphipod densities at the Crib Point site. We consider that Western Port seagrass habitat is sensitive to increased loads of nutrients within the water column with the Blind Bight region most at risk.
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Dissertations / Theses on the topic "Aquatic invertebrates Victoria"

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Palmer, Shiree. "The ecological role of a common seastar (Patiriella spp.) within intertidal cobble fields : a thesis submitted to the Victoria University of Wellington in partial fulfilment of the requirements for the degree of Master of Science in Marine Biology /." ResearchArchive@Victoria e-Thesis, 2010. http://hdl.handle.net/10063/1240.

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