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Journal articles on the topic 'Lake Macquarie'

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Published: 4 June 2021

Last updated: 20 February 2023

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1

Simmons, B. L., and S. L. Trengove. "Impact of Catchment Urbanisation on Lake Macquarie (Australia)." Water Science and Technology 21, no. 2 (February 1, 1989): 205–10. http://dx.doi.org/10.2166/wst.1989.0051.

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Increasing urbanisation of coastal areas is leading to impacts on coastal lakes which decrease their amenity for recreation and tourism. Runoff and wastewater discharge cause siltation, impact seagrass beds and change the characteristics of open waters, affecting boating, swimming, fishing and the aesthetic quality of the locale. Management of urban development and wastewater disposal is required to minimise sedimentation and nutrient enrichment. This could include development restrictions, runoff controls and a strategy for wastewater treatment and discharge. The catchment of Lake Macquarie, a marine coastal lake, has been progressively urbanised since 1945. Urbanisation, through increased stormwater runoff and point source discharges, has caused a major impact on the lake in terms of sedimentation and nutrient enrichment. Losses of lake area and navigable waters have occurred. Accompanying problems include changes in the distribution of seagrass beds and nuisance growths of benthic algae. Since the 1950's, dry weather nutrient concentrations have increased and mean water clarity has decreased. Severe problems, as observed in other New South Wales coastal lakes, for example benthic algae in Lake Illawarra and Tuggerah Lakes, have not yet developed. Because of the lead time taken to implement policies and controls, trends should be identified and policies developed now so as to avoid nutrient buildup and development of sustained problems.

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2

Appleford, P., T. A. Anderson, and G. J. Gooley. "Reproductive cycle and gonadal development of Macquarie perch, Macquaria australasica Cuvier (Percichthyidae), in Lake Dartmouth and tributaries of the Murray - Darling Basin, Victoria, Australia." Marine and Freshwater Research 49, no. 2 (1998): 163. http://dx.doi.org/10.1071/mf97012.

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The gonadal development, reproductive cycle and growth of Macquarie perch, Macquaria australasica Cuvier, in Lake Dartmouth and selected tributaries of the Murray–Darling River Basin in south-eastern Australia were evaluated. Gonadosomatic index (GSI) and histological analysis were used to determine gonadal development and age and size at first maturity in the resident Lake Dartmouth population. GSI analysis was also used to determine age and size of Macquarie perch at first maturity in the inflowing Mitta Mitta River and other riverine populations within the Goulburn River catchment. Males appeared slightly smaller at first spawning than females at all sites; both sexes were fully mature at four years of age. Differences in size at first maturity were found between the lake and river populations; both males and females of river populations tended to mature at a much smaller size than the fish resident in the lake. Spawning occurred around November. Ovarian and testicular development in this species follows a pattern similar to that of other native Australian percichthyids. The implications for management of recreational fisheries based on minimum size regulations is discussed in relation to site-specific differences in growth rates and size of first maturity of fish.

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3

Cadwallader, PL, and J. Douglas. "Changing food habits of Macquarie perch, Macquaria australasica Cuvier (Pisces : Percichthyidae), during the initial filling phase of Lake Dartmouth, Victoria." Marine and Freshwater Research 37, no. 5 (1986): 647. http://dx.doi.org/10.1071/mf9860647.

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The composition of the diet of Macquarie perch changed markedly during the various stages of rising and falling water-level during the initial filling phase of Lake Dartmouth, an impoundment formed by the construction of Dartmouth Dam on the Mitta Mitta River in north-eastern Victoria. Macquarie perch fed on typical river-dwelling organisms from inflowing rivers, on terrestrial organisms that became displaced as the water-level rose, and on typical still-water or sluggish-water organisms, which were extremely abundant in the newly created lake. The relative proportions of several of these food types in the diet varied depending on whether the water-level was rising or falling. Macquarie perch appear to have adapted well to the changing food supply in the lake, and have included in their diet several food types that they would not normally have encountered in their natural riverine habitat.

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4

Tonkin, Zeb, Jarod Lyon, David S. L. Ramsey, Nick R. Bond, Graeme Hackett, Kyne Krusic-Golub, Brett A. Ingram, and Stephen R. Balcombe. "Reservoir refilling enhances growth and recruitment of an endangered remnant riverine fish." Canadian Journal of Fisheries and Aquatic Sciences 71, no. 12 (December 2014): 1888–99. http://dx.doi.org/10.1139/cjfas-2014-0081.

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Rapid increases in native riverine fish populations associated with trophic upsurge immediately following reservoir construction are well documented. Repeated upsurge periods and extended benefits to populations are, however, less understood. We used sclerochronology to investigate fish growth and netting surveys to estimate recruitment and abundance of a lacustrine population of an Australian riverine fish, the Macquarie perch (Macquaria australasica) in Lake Dartmouth. Record low inflows from 1997 to 2008 caused the reservoir to shrink to its lowest volume since construction. Refilling began in 2008, reaching 99% capacity in 2013. We hypothesized that fish growth, recruitment, and abundance would increase in response to the refilling of the lake, reproducing a similar response to the initial filling period. Our findings supported this hypothesis. Macquarie perch growth, recruitment, and abundance were enhanced during the refilling of Lake Dartmouth. Growth, best explained by the effects of dam height, change in dam height, temperature (and their interactions), and recruitment, were highest during the first years of refilling when lake levels and temperatures were low. We propose one or a combination of varying levels of intraspecific competition (low during initial filling and high following population expansion) and improved riverine conditions for reproductive success as the most plausible explanation. Our results suggest extended periods of low lake levels followed by rapid inundation events are likely to enhance recruitment and population growth opportunities for this species. While reservoir construction in general impacts negatively on native fish populations, the potential to offset these impacts for conservation management purposes should be considered.

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5

Saunders, Krystyna M., Dominic A. Hodgson, and Andrew McMinn. "Quantitative relationships between benthic diatom assemblages and water chemistry in Macquarie Island lakes and their potential for reconstructing past environmental changes." Antarctic Science 21, no. 1 (June 10, 2008): 35–49. http://dx.doi.org/10.1017/s0954102008001442.

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AbstractThis study is the first published survey of diatom-environment relationships on sub-Antarctic Macquarie Island. Fifty-eight sites in 50 coastal and inland lakes were sampled for benthic diatoms and water chemistry. 208 diatom species from 34 genera were identified. Multivariate analyses indicated that the lakes were distributed along nutrient and conductivity gradients. Conductivity, pH, phosphate (SRP), silicate and temperature all explained independent portions of the variance in the diatom data. Transfer functions provide a quantitative basis for palaeolimnological studies of past climate change and human impacts, and can be used to establish baseline conditions for assessing the impacts of recent climate change and the introduction of non-native plants and animals. Statistically robust diatom transfer functions for conductivity, phosphate and silicate were developed, while pH and temperature transfer functions performed less well. The lower predictive abilities of the pH and temperature transfer functions probably reflect the broad pH tolerance range of diatoms on Macquarie Island and uneven distribution of lakes along the temperature gradient. This study contributes to understanding the current ecological distribution of Macquarie Island diatoms and provides transfer functions that will be applied in studies of diatoms in lake sediment cores to quantitatively reconstruct past environmental changes.

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6

Barker, R. D., and G. Caughley. "Distribution and abundance of kangaroos (Marsupialia: Macropodidae) at the time of European contact: Tasmania." Australian Mammalogy 13, no. 2 (1990): 157. http://dx.doi.org/10.1071/am90016.

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The Eastern Grey Kangaroo Macropus giganteus originally extended from the River Forth in the northwest to the east coast and south to North West Bay. It occurred on both sides of the Derwent River upstream beyond New Norfolk and into the central highlands along the Ouse and Shannon Rivers to the Great Lake, Lake Echo and Arthur's Lakes. Its highest density was probably in the coastal areas of the northeast and in the Norfolk Plains areas of the Macquarie and South Esk Rivers. Its present range comprises islands within that original range, augmented by a few populations established by translocation.

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7

Eden, John-Sebastian, Kun Lee Lim, and Peter A. White. "Complete Genome of the Human Norovirus GIV.1 Strain Lake Macquarie Virus." Journal of Virology 86, no. 18 (August 23, 2012): 10251–52. http://dx.doi.org/10.1128/jvi.01604-12.

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Norovirus is an important human pathogen that is now recognized as the leading cause of acute gastroenteritis globally. Six viral genogroups have been described, although only genogroups GI, GII, and GIV are known to infect humans, with the GII viruses most commonly identified in both outbreak and sporadic settings. In contrast, infections by GIV viruses are rarely reported, and their overall prevalence in the community is unknown. Here, we report the complete genome sequence of the human GIV.1 strain Lake Macquarie virus, which caused two linked outbreaks of acute gastroenteritis in aged-care facilities in the Hunter region of New South Wales, Australia. The Lake Macquarie virus genome was 7,527 nucleotides (nt) in length and shared highest identity (70%) with the recently completed feline GIV.2 virus genome.

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8

Tonkin, Zeb, Jarod P. Lyon, Paul Moloney, Stephen R. Balcombe, and Graeme Hackett. "Spawning-stock characteristics and migration of a lake-bound population of the endangered Macquarie perch Macquaria australasica." Journal of Fish Biology 93, no. 4 (October 2018): 630–40. http://dx.doi.org/10.1111/jfb.13731.

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9

Salini, J. "Genetic variation and population subdivison in the greentail prawn Metapenaeus bennettae (Racek & Dall)." Marine and Freshwater Research 38, no. 3 (1987): 339. http://dx.doi.org/10.1071/mf9870339.

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The genetic structure of M. bennettae populations from six locations on the east coast of Australia was investigated using starch-gel electrophoresis. Eight polymorphic loci (fumarate hydratase, glucose- 6-phosphate isomerase, malate dehydrogenase-1 and -2, mannose-6-phosphate isomerase, octanol dehydrogenase, phosphogluconate dehydrogenase and phosphoglucomutase) were examined. All loci over the six sites were in Hardy-Weinberg equilibrium. Although low levels of variation typical of penaeid prawns were found, the contingency Χ2 analysis of allele frequencies over all locations revealed considerable genetic heterogeneity. However, pairwise comparisons of adjacent locations showed that most of this genetic heterogeneity was largely attributable to the Moreton Bay-Lake Macquarie comparison. These two locations are the most widely separated adjacent sample sites. Replicate samples from 1982 and 1983 revealed consistency in allele frequencies at Moreton Bay and at Lake Macquarie. These results confirm previously reported genetic heterogeneity between Queensland and New South Wales populations of M. bennettae, but they do not support the report that nearby populations in both Queensland and New South Wales are also heterogeneous.

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10

Favaro, Paola. "Lake Macquarie Pavilions: Connecting the Community with Artists, Places and Spaces." International Journal of the Arts in Society: Annual Review 4, no. 3 (2009): 19–32. http://dx.doi.org/10.18848/1833-1866/cgp/v04i03/35655.

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11

Peters, G. M., W. A. Maher, D. Jolley, B. I. Carroll, V. G. Gomes, A. V. Jenkinson, and G. D. McOrist. "Selenium contamination, redistribution and remobilisation in sediments of Lake Macquarie, NSW." Organic Geochemistry 30, no. 10 (October 1999): 1287–300. http://dx.doi.org/10.1016/s0146-6380(99)00102-3.

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12

Nobbs, D. M., J. P. Barford, B. I. Carroll, and G. M. Peters. "An integrated investigation of anthropogenic selenium contamination in Lake Macquarie, NSW." Pure and Applied Chemistry 69, no. 11 (January 1, 1997): 2387–402. http://dx.doi.org/10.1351/pac199769112387.

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13

Trnski, T. "Diel and tidal abundance of fish larvae in a barrier-estuary channel in New South Wales." Marine and Freshwater Research 52, no. 7 (2001): 995. http://dx.doi.org/10.1071/mf00148.

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In four 24-h series of ichthyoplankton sampling during winter (June–July) 1996 in Swansea Channel (which connects Lake Macquarie with coastal waters of central New South Wales, Australia) 3367 fish larvae representing at least 77 species were collected. The larval fish community clustered by sampling date and by diel phase. Diel phase had a stronger influence on abundance of more common taxa than did tide phase, and also most influence on community structure. For most taxa there was no difference in abundance between flood and ebb tides, regardless of the estuarine or marine source of the eggs and larvae. All but two of 16 common species were present in Swansea Channel throughout their entire larval stage. The sparids Acanthopagrus australis and Rhabdosargus sarbawere present in the channel only at settlement-competent sizes. These two species showed evidence of selective presence in the channel during a particular diel or tidal phase, with A. australis apparently preferring night-flood tides, which would aid migration to the estuarine nursery habitats in Lake Macquarie. The ability or inclination to escape the strong bi-directional flows in channels seems limited to only a few taxa that appear to respond to physical cues and tidal current flows.

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14

Batley, GE. "Heavy metal speciation in waters, sediments and biota from Lake Macquarie, New South Wales." Marine and Freshwater Research 38, no. 5 (1987): 591. http://dx.doi.org/10.1071/mf9870591.

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The distribution and bioavailability of heavy metals in waters and sediments from Lake Macquarie (N.S.W.) have been examined. Elevated concentrations of zinc, lead, cadmium and copper detected in surface sediments and waters from the northern end of the lake are attributable to discharges from a lead-zinc smelter on Cockle Creek. The majority of the metals are in bioavailable forms and are shown to be accumulated in seagrasses, seaweeds and bivalves. Calculations indicate that, at the current rates of discharge, the concentrations of bioavailable metals in newly-deposited sediments should not be deleterious. Elutriate tests showed that there will be no significant mobilization of metals during dredging operations to remove the contaminated sediments.

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15

Dollery, Brian, Michael A. Kortt, and Lin Crase. "Community Council Cooperation: The Lake Macquarie City Council Co-Governance Delegation Model." International Journal of Public Administration 37, no. 11 (August 14, 2014): 747–55. http://dx.doi.org/10.1080/01900692.2014.903274.

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16

Doyle, C. J., F. Pablo, R. P. Lim, and R. V. Hyne. "Assessment of Metal Toxicity in Sediment Pore Water from Lake Macquarie, Australia." Archives of Environmental Contamination and Toxicology 44, no. 3 (April 1, 2003): 343–50. http://dx.doi.org/10.1007/s00244-002-2003-8.

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17

Roach, A. C., W. Maher, and F. Krikowa. "Assessment of Metals in Fish from Lake Macquarie, New South Wales, Australia." Archives of Environmental Contamination and Toxicology 54, no. 2 (August 31, 2007): 292–308. http://dx.doi.org/10.1007/s00244-007-9027-z.

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18

Hughes, Jocelyne M. R. "The relations between aquatic plant communities and lake characteristics on Macquarie Island." New Zealand Journal of Botany 24, no. 2 (April 1986): 271–78. http://dx.doi.org/10.1080/0028825x.1986.10412677.

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19

Scanes, P. "Trace metal uptake in cockles Anadara trapezium from Lake Macquarie, New South Wales." Marine Ecology Progress Series 95 (1993): 135–42. http://dx.doi.org/10.3354/meps095135.

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20

Scanes, P. "Trace metal uptake in cockles Anadara trapezium from Lake Macquarie, New South Wales." Marine Ecology Progress Series 102 (1993): 135–42. http://dx.doi.org/10.3354/meps102135.

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21

Buchmann, Anne. "Insights into domestic horse tourism: the case study of Lake Macquarie, NSW, Australia." Current Issues in Tourism 20, no. 3 (February 25, 2014): 261–77. http://dx.doi.org/10.1080/13683500.2014.887058.

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22

Dredge, Dianne. "Leisure lifestyles and tourism: Socio-cultural, economic and spatial change in Lake Macquarie." Tourism Geographies 3, no. 3 (January 2001): 279–99. http://dx.doi.org/10.1080/14616680110055411.

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23

Price, A., W. Maher, J. Kirby, F. Krikowa, E. Duncan, A. Taylor, and J. Potts. "Distribution of arsenic species in an open seagrass ecosystem: relationship to trophic groups, habitats and feeding zones." Environmental Chemistry 9, no. 1 (2012): 77. http://dx.doi.org/10.1071/en11105.

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Environmental contextAlthough arsenic occurs at high concentrations in many marine systems, the influencing factors are poorly understood. The arsenic content of sediments, detritus, suspended particles and organisms have been investigated from different trophic levels in an open seagrass ecosystem. Total arsenic concentrations and arsenic species were organism-specific and determined by a variety of factors including exposure, diet and the organism physiology. AbstractThe distribution and speciation of arsenic within an open marine seagrass ecosystem in Lake Macquarie, NSW, Australia is described. Twenty-six estuarine species were collected from five trophic groups (autotrophs, suspension-feeders, herbivores, detritivores and omnivores, and carnivores). Sediment, detritus, epibiota and micro-invertebrates were also collected and were classified as arsenic source samples. There were no significant differences in arsenic concentrations between trophic groups and between pelagic and benthic feeders. Benthic-dwelling species generally contained higher arsenic concentrations than pelagic-dwelling species. Sediments, seagrass blades and detritus contained mostly inorganic arsenic (50–90 %) and arsenoribosides (10–26 %), with some methylarsonate (9.4–14.6 %) and dimethyarsinate (7.9–9.7 %) in seagrass blades and detritus. Macroalgae contained mostly arsenoribosides (40–100 %). Epibiota and other animals contained predominately arsenobetaine (63–100 %) and varying amounts of dimethyarsinate (0–26 %), monomethyarsonate (0–14.6 %), inorganic arsenic (0–2 %), trimethylarsenic oxide (0–6.6 %), arsenocholine (0–12 %) and tetramethylarsonium ion (0–4.5 %). It was concluded that arsenic concentrations and species within the organisms of the Lake Macquarie ecosystem are species-specific and determined by a variety of factors including exposure, diet and the physiology of the organisms.

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24

Rowe, Claire E., Will F. Figueira, Brendan P. Kelaher, Anna Giles, Lea T. Mamo, Shane T. Ahyong, and Stephen J. Keable. "Evaluating the effectiveness of drones for quantifying invasive upside-down jellyfish (Cassiopea sp.) in Lake Macquarie, Australia." PLOS ONE 17, no. 1 (January 19, 2022): e0262721. http://dx.doi.org/10.1371/journal.pone.0262721.

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Upside-down jellyfish (Cassiopea sp.) are mostly sedentary, benthic jellyfish that have invaded estuarine ecosystems around the world. Monitoring the spread of this invasive jellyfish must contend with high spatial and temporal variability in abundance of individuals, especially around their invasion front. Here, we evaluated the utility of drones to survey invasive Cassiopea in a coastal lake on the east coast of Australia. To assess the efficacy of a drone-based methodology, we compared the densities and counts of Cassiopea from drone observations to conventional boat-based observations and evaluated cost and time efficiency of these methods. We showed that there was no significant difference in Cassiopea density measured by drones compared to boat-based methods along the same transects. However, abundance estimates of Cassiopea derived from scaling-up transect densities were over-inflated by 319% for drones and 178% for boats, compared to drone-based counts of the whole site. Although conventional boat-based survey techniques were cost-efficient in the short-term, we recommend doing whole-of-site counts using drones. This is because it provides a time-saving and precise technique for long-term monitoring of the spatio-temporally dynamic invasion front of Cassiopea in coastal lakes and other sheltered marine habitats with relatively clear water.

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25

Frost, Lana, and Fiona Miller. "Planning for social justice, anticipating sea level rise: the case of Lake Macquarie, Australia." Australian Geographer 52, no. 2 (April 3, 2021): 171–90. http://dx.doi.org/10.1080/00049182.2021.1917327.

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26

Taylor, Matthew D., Nicholas L. Payne, Alistair Becker, and Michael B. Lowry. "Feels like home: homing of mature large-bodied fish following translocation from a power-station canal." ICES Journal of Marine Science 74, no. 1 (October 5, 2016): 301–10. http://dx.doi.org/10.1093/icesjms/fsw168.

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Fish translocation is a common method of conservation and fisheries enhancement. Monitoring post-translocation movements and migration provides useful information to inform translocation strategies. Three species of large-bodied fish (Yellowfin Bream Acanthopagrus australis, Luderick Girella tricuspidata, and Tarwhine Rhabdosargus sarba) impounded in a cooling water canal at a power station were translocated into the adjacent estuary (Lake Macquarie, New South Wales). Translocated fish were tagged with acoustic tags (n = 34) equipped with accelerometer sensors (providing a relative measure of fish activity) and released on either an artificial reef or a natural reef. In addition, 8 free-ranging Yellowfin Bream were captured and tagged on the artificial reef. Fish were tracked throughout Lake Macquarie on a dispersed array of 18 VemcoVR2W receivers, and on the artificial reef using a VR4-UWM Vemco Positioning System, for up to 11 months. Yellowfin Bream and Luderick rapidly migrated back to the power station, whereas Tarwhine remained near the release location. Translocated Yellowfin Bream showed divergent behavioural patterns to free-ranging Yellowfin Bream on the artificial reef, with much higher activity levels, elevated nocturnal activity, and different patterns of habitat usage, possibly reflecting divergent foraging behaviour. This study presents a rare example of non-natal homing to an artificial habitat in several large-bodied marine fish species. The role of low frequency sound in the homing of translocated fish, and factors contributing to the observed behavioural patterns are discussed. The presence of a homing signal which can facilitate return migration may decrease the efficacy of translocation efforts for adult marine fishes; however, these responses are species-specific and will require evaluation on a case-by-case basis.

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27

Kilby, GW, and GE Batley. "Chemical indicators of sediment chronology." Marine and Freshwater Research 44, no. 4 (1993): 635. http://dx.doi.org/10.1071/mf9930635.

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The determination of recent sedimentation rates has traditionally used radiochemical dating techniques but, because of limited laboratory facilities and the costs of these techniques, alternative methods are desirable. Information on sedimentation rates and sediment history can be obtained from anthropogenic chemical components whose presence in sediments, especially near urban areas, can be used as markers to assess their chronology. More than one marker, with a known date of introduction, should be used. In this study, organosilicons first used in the early 1950s and tributyltin used in marine antifouling paints from 1972 were examined in sediments from Lake Macquarie, NSW, to supplement the known input of heavy metals from the lead-zinc smelter that has been operating at the northern end of the lake since 1897. The most reliable data were obtained at sites where all three markers were present, and use of these data allowed independent determination of the year of initial operation of a sewage treatment works.

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28

Robinson, K. I. M. "Temporal changes in the benthic macroflora of Lake Macquarie, a New South Wales coastal lagoon." Wetlands Australia 5, no. 2 (October 13, 2009): 78. http://dx.doi.org/10.31646/wa.94.

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29

Kim, Kwon-Rae, Gary Owens, and Ravi Naidu. "Heavy metal distribution, bioaccessibility, and phytoavailability in long-term contaminated soils from Lake Macquarie, Australia." Soil Research 47, no. 2 (2009): 166. http://dx.doi.org/10.1071/sr08054.

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This study was conducted to investigate the distribution, bioaccessibility, and phytoavailability of heavy metal(loids) in long-term contaminated soils within the vicinity of a lead (Pb) and zinc (Zn) smelter in Lake Macquarie, NSW, Australia. Thirty-two representative surface (0–100 mm) soils were collected from the region surrounding the smelter. The soils were analysed for aqua regia extractable heavy metals (Cu, Zn, Cd, Pb), bioaccessibility using a simplified physiological-based extraction technique (SBET), and phytoavailability using 1 m NH4NO3 extractions, together with key soil properties known to influence metal speciation and availability. The area was found to be potentially contaminated with heavy metals (Cu, Zn, Cd, Pb) with many soil samples exceeding the Australian Health Investigation Levels for ‘Standard’ residential areas. Lead bioaccessibility ranged from 32 to 100% of the total Pb concentration, with bioaccessibility increasing as metal loading increased. Heavy metal phytoavailability was strongly related to soil pH for Cu (r2 = 0.84, P < 0.001), Pb (r2 = 0.70, P < 0.001), and Cd (r2 = 0.66, P < 0.001), implying that the phytoavailability of these heavy metal was mainly governed by soil acidity. Most significantly, the presence of multiple metals was found to influence metal phytoavailability. For example, the presence of Pb significantly influenced the phytoavailability of Cd (r2 = 0.89, P < 0.001) and Zn (r2 = 0.78, P < 0.001) in mixed heavy metal contaminated soils.

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30

Peters, G. M., W. A. Maher, F. Krikowa, A. C. Roach, H. K. Jeswani, J. P. Barford, V. G. Gomes, and D. D. Reible. "Selenium in sediments, pore waters and benthic infauna of Lake Macquarie, New South Wales, Australia." Marine Environmental Research 47, no. 5 (June 1999): 491–508. http://dx.doi.org/10.1016/s0141-1136(99)00027-6.

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31

Martin, Carol L., Salim Momtaz, Troy Gaston, and Natalie A. Moltschaniwskyj. "Mapping the intangibles: Cultural ecosystem services derived from Lake Macquarie estuary, New South Wales, Australia." Estuarine, Coastal and Shelf Science 243 (September 2020): 106885. http://dx.doi.org/10.1016/j.ecss.2020.106885.

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32

Méndez, H., P. M. Geary, and R. H. Dunstan. "Surface wetlands for the treatment of pathogens in stormwater: three case studies at Lake Macquarie, NSW, Australia." Water Science and Technology 60, no. 5 (May 1, 2009): 1257–63. http://dx.doi.org/10.2166/wst.2009.470.

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The treatment of stormwater using surface constructed wetlands has become common in the last decades. However, the use of constructed wetlands for stormwater management has not been thoroughly evaluated in their capacity to treat microbial loads. The case studies presented in this paper are situated at Lake Macquarie, a large estuarine lagoon located approximately 150 km north of Sydney, Australia. To protect the lake ecosystem from the impact of increasing urban development, the local Council constructed numerous stormwater quality improvement devices (SQIDs) at selected locations. The SQIDs typically consisted of trash racks, gross pollutant traps and surface constructed wetlands. To evaluate the effectiveness of three of these devices in reducing faecal contamination, water samples were collected for faecal coliforms (FC) during and following rainfall at inlets and outlets of the structures. Results indicated one of the SQIDs as the most efficient for bacterial reduction, while the other two provided low or non reduction of FC. Results also illustrated dependence of bacteria reduction on flow conditions. Comparison of devices suggested that hydraulic residence times and other design parameters strongly influenced the capacity of each device to reduce FC counts during different weather conditions.

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33

Goggin, C. L. "Gonadal development of the hairy mussel, Trichomya hirsute (Mollusca: Bivalvia) from Lake Macquarie, New South Wales." Molluscan Research 15, no. 1 (January 1994): 21–28. http://dx.doi.org/10.1080/13235818.1994.10673654.

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34

Fallding, Martin. "A framework for managing and monitoring bush regeneration programs: a case study from Lake Macquarie, NSW." Ecological Management & Restoration 12, no. 3 (November 29, 2011): 244–46. http://dx.doi.org/10.1111/j.1442-8903.2011.00612.x.

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35

McManus, Phil, Krishna K. Shrestha, and Donna Yoo. "Equity and climate change: Local adaptation issues and responses in the City of Lake Macquarie, Australia." Urban Climate 10 (December 2014): 1–18. http://dx.doi.org/10.1016/j.uclim.2014.08.003.

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36

Morrison, Anthony L. "An assessment of the effectiveness of lead pollution reduction strategies in North Lake Macquarie, NSW, Australia." Science of The Total Environment 303, no. 1-2 (February 2003): 125–38. http://dx.doi.org/10.1016/s0048-9697(02)00353-4.

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Robinson, David, Trevor Dhu, and John Schneider. "The Effect of Different Attenuation Models on Earthquake Hazard in the Newcastle and Lake Macquarie Region, Australia." ASEG Extended Abstracts 2004, no. 1 (December 2004): 1–4. http://dx.doi.org/10.1071/aseg2004ab123.

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Ellwood, Michael J., Larissa Schneider, Jaimie Potts, Graeme E. Batley, John Floyd, and William A. Maher. "Volatile selenium fluxes from selenium-contaminated sediments in an Australian coastal lake." Environmental Chemistry 13, no. 1 (2016): 68. http://dx.doi.org/10.1071/en14228.

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Environmental context Methylation of sedimentary selenium to volatile dimethylselenide is a natural remediation process for contaminated aquatic systems. We present flux estimates for the loss of dimethylselenide from sediments of an anthropogenically affected lake and observe a 6-fold difference between late autumn–early winter and summer. The loss of dimethylselenide represents a significant sediment loss vector, of the same order as the diffusive loss flux for inorganic selenium across the sediment–water interface. Abstract Overflows from ash dams associated with the operation of coal-fired power stations in Lake Macquarie, NSW, Australia, have been a historical source of selenium to the lake. Although dissolved selenium concentrations have been marginally elevated, sediments are the major sink. Methylation of sedimentary selenium to volatile dimethylselenide (DMSe) is known to be a natural remediation process. Sediments from north of Wyee Bay and the Vales Point Power Station were the subject of field sampling and monitoring to determine the extent to which selenium is being lost to the atmosphere as DMSe. Flux estimates were obtained by trapping volatile selenium species using benthic domes, followed by analysis in the field using a fully automated cryogenic trapping system with atomic fluorescence detection. The detection limit of the system was 0.1ngL–1 for DMSe and 1ngL–1 for dimethyl diselenide (DMDSe). Measurements in both summer and late autumn–early winter showed a distinct seasonal difference, with a higher summer DMSe flux of 53±25ng Se m–2h–1 (±s.d.) compared with 8±5ng Se m–2h–1 in late autumn–early winter. No DMDSe was detected. These fluxes are similar to those measured in Europe and North America, and represent an annual loss of 1.3kg of selenium per year from the nearby lake area. Lake-wide this would represent a significant loss to the atmosphere.

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Roach, A. C. "Assessment of metals in sediments from Lake Macquarie, New South Wales, Australia, using normalisation models and sediment quality guidelines." Marine Environmental Research 59, no. 5 (June 2005): 453–72. http://dx.doi.org/10.1016/j.marenvres.2004.07.002.

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40

Maher, W., W. Goessler, J. Kirby, and G. Raber. "Arsenic concentrations and speciation in the tissues and blood of sea mullet (Mugil cephalus) from Lake Macquarie NSW, Australia." Marine Chemistry 68, no. 1-2 (December 1999): 169–82. http://dx.doi.org/10.1016/s0304-4203(99)00072-9.

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41

Deng, Junjie, Qiangsheng Yao, Brian G. Jones, Kerrylee Rogers, Colin D. Woodroffe, and Jan Harff. "A methodological framework for reconstructing historical delta front morphology: case study at Macquarie rivulet delta within Lake Illawarra, Australia." Journal of Coastal Conservation 23, no. 4 (May 22, 2019): 717–26. http://dx.doi.org/10.1007/s11852-019-00699-7.

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42

Taylor, Anne, and William Maher. "Developing a sentinel mollusc species for toxicity assessment: metal exposure, dose and response – laboratory v. field exposures and resident organisms." Environmental Chemistry 13, no. 3 (2016): 434. http://dx.doi.org/10.1071/en15104.

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Environmental contextMetal contamination in estuarine sediments can affect ecosystem health. Molluscs are commonly used as environmental indicators because they accumulate contaminants that cause adverse health effects. We investigated metal uptake and effects in the Sydney cockle, comparing exposure to contaminated lake sediments in situ and in laboratory aquariums. Although differences were observed between the different exposure types, all approaches were found to be valid for investigating metal health effects in this organism. AbstractRelationships between exposure, tissue dose and biological responses of the benthic marine bivalve Anadara trapezia to an estuarine sediment zinc, copper, lead, cadmium and selenium contamination gradient in Lake Macquarie, NSW, were evaluated using three approaches. Organisms were exposed to sediments in laboratory aquaria, caged in situ in the lake and lake resident organisms collected. Dose included total metal tissue burden and subcellular metal distribution to determine metabolically available metal. Response indices were total antioxidant capacity, lipid peroxidation, lysosomal stability and condition index. Bioaccumulation of total metals was higher in the laboratory and resident organisms than in those transplanted in the field but the contribution of individual metals to the total differed. Laboratory-exposed organisms had increased concentrations of cadmium and lead in their biologically active and detoxified metal fractions but not of the essential elements zinc and copper. Subcellular metal distribution patterns were the same in resident organisms but cadmium and lead burdens were higher in both fractions. Biomarker responses were similar in laboratory, transplanted and resident organisms. Total antioxidant capacity was significantly reduced and lipid peroxidation and lysosomal destabilisation significantly increased in all metal-exposed organisms compared with the reference A. trapezia. Condition index of laboratory-exposed organisms was significantly lower than in situ, resident and reference organisms. Clear metal exposure–dose–response relationships have been demonstrated for A. trapezia in laboratory and in situ experiments. Non-resident organisms, in both exposure scenarios, gave similar responses to resident metal-exposed organisms, showing all approaches are valid when investigating effects in this species.

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Robinson, K. I. M. "Effects of thermal power station effluent on the seagrass benthic communities of Lake Macquarie, a New South Wales coastal lagoon." Wetlands Australia 7, no. 1 (January 7, 2010): 1. http://dx.doi.org/10.31646/wa.112.

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44

Dollery, Brian, Michael A. Kortt, and Sue O'Keefe. "Local Co-Governance and Environmental Sustainability in New South Wales Local Government: The Lake Macquarie City Council Sustainable Neighbourhoods Program." Economic Papers: A journal of applied economics and policy 33, no. 1 (March 2014): 36–44. http://dx.doi.org/10.1111/1759-3441.12065.

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Schneider, Larissa, William A. Maher, Jaimie Potts, Anne M. Taylor, Graeme E. Batley, Frank Krikowa, Anthony A. Chariton, and Bernd Gruber. "Modeling food web structure and selenium biomagnification in lake macquarie, New South Wales, Australia, using stable carbon and nitrogen isotopes." Environmental Toxicology and Chemistry 34, no. 3 (February 6, 2015): 608–17. http://dx.doi.org/10.1002/etc.2847.

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46

Kirby, W. Maher, F. Krikowa, J. "Selenium, Cadmium, Copper, and Zinc Concentrations in Sediments and Mullet ( Mugil cephalus ) from the Southern Basin of Lake Macquarie, NSW, Australia." Archives of Environmental Contamination and Toxicology 40, no. 2 (February 1, 2001): 246–56. http://dx.doi.org/10.1007/s002440010169.

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47

Macreadie, Peter, and Simon Hardy. "Response of Seagrass ‘Blue Carbon’ Stocks to Increased Water Temperatures." Diversity 10, no. 4 (October 22, 2018): 115. http://dx.doi.org/10.3390/d10040115.

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Seagrass meadows are globally important sinks of ‘Blue Carbon’, but warming water temperatures due to climate change may undermine their capacity to sequester and retain organic carbon (Corg). We tested the effects of warming on seagrass Corg stocks in situ by transplanting seagrass soil cores along a thermal plume generated by a coal-fired power plant in a seagrass-dominated estuary (Lake Macquarie, Australia). Transplanted cores were subjected to temperatures 2 and 4 °C above ambient temperatures and Corg content was measured after 7, 30, 90 and 180 days. We were unable to detect any significant effect of warming on Corg concentration, stocks, chemical composition (as measured by labile, recalcitrant, refractory ratios), or microbial abundance at any time point. In fact, Corg levels were temporally variable. These findings contrast those of previous studies (mostly laboratory-based) that have reported increases in microbial remineralisation (breakdown) of Corg in response to warming. To explain the lack of any detectable warming effect, we suggest that higher temperatures, longer durations of warming exposure, or additional stressors (e.g., oxygen exposure) may be needed to overcome microbial activation barriers and stimulate Corg remineralisation.

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Dollery, Brian, Michael A. Kortt, and Simone de Souza. "Enduring Financial Sustainability Through “Bottom-Up” Local Authority Ingenuity and Rational “Top-Down” State Regulation: The Case of Lake Macquarie City Council." International Journal of Public Administration 37, no. 4 (February 20, 2014): 215–23. http://dx.doi.org/10.1080/01900692.2013.809594.

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49

Barwick, M., and W. Maher. "Biotransference and biomagnification of selenium copper, cadmium, zinc, arsenic and lead in a temperate seagrass ecosystem from Lake Macquarie Estuary, NSW, Australia." Marine Environmental Research 56, no. 4 (October 2003): 471–502. http://dx.doi.org/10.1016/s0141-1136(03)00028-x.

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50

Gray, Charles A. "First record of biological traits of the Australian endemic longfin pike (Dinolestes lewini : Dinolestidae)." Australian Journal of Zoology 68, no. 1 (2020): 40. http://dx.doi.org/10.1071/zo21001.

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Dinolestes lewini (longfin pike) is a common, but little studied, fish species endemic to temperate marine-dominated waters below ~31°S on the east, south and west coasts of the Australian mainland and around Tasmania. Samples of longfin pike collected in Lake Macquarie, a large coastal lagoon in south-eastern Australia, were examined for age, growth and reproductive characteristics. Spawning occurred over an extended period between at least October and March (austral spring to autumn), and although spent individuals occurred in samples, spawning location could not be ascertained. Examination of otolith edge condition provided strong support that opaque and translucent zones were deposited annually and that counts of opaque zones on otoliths can be used to estimate ages. Sex-related differences in mean length at age and projected growth based on the von Bertalanffy growth function were evident. Growth trajectories diverged at ~1.5 years of age, after which females grew faster than males for a longer period, eventually attaining greater observed maximum lengths and ages. Observed longevity was 5+ and 9+ years for males and females, respectively. The data provide an initial knowledge-platform for incorporation in species assessments and for further comparative investigations of variation in biological traits across the species’ distribution.

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