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Journal articles on the topic 'Macquarie'

Author: Grafiati

Published: 4 June 2021

Last updated: 20 February 2023

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1

SCHNABEL, KAREEN E., INGO BURGHARDT, and SHANE T. AHYONG. "Southern high latitude squat lobsters II: description of Uroptychus macquariae sp. nov. from Macquarie Ridge." Zootaxa 4353, no. 2 (November 23, 2017): 327. http://dx.doi.org/10.11646/zootaxa.4353.2.4.

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Squat lobsters have only recently been recorded from the Macquarie Ridge, which extends south between New Zealand and Antarctica. Among these, Uroptychus insignis (Henderson, 1885) was recorded for the first time outside the western Indian Ocean, exhibiting only subtle morphological differences. Reexamination of the Macquarie Ridge and Indian Ocean specimens attributed to U. insignis using morphological and molecular data revealed the Macquarie Ridge form to represent a separate species. Subtle but consistent morphological differences are evident and partial CO1 sequence data indicates that the specimens collected on Macquarie Ridge differ from those collected in the Indian Ocean by more than 7%. The Macquarie Ridge species is described herein as Uroptychus macquariae n.sp. Subtle morphological differences between the new species and U. insignis are discussed.

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2

Brown, Culum, and Jennifer Morgan. "Predator recognition and responses in the endangered Macquarie perch (Macquaria australasica)." Marine and Freshwater Research 66, no. 2 (2015): 127. http://dx.doi.org/10.1071/mf13258.

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Macquarie perch, Macquaria austalasica, is an endangered species endemic to southern Australia whose distribution is highly fragmented and continues to decline. Key threatening processes include habitat destruction, dams and weirs, overfishing and interactions with introduced species. Here, we examined the responses of small and large Macquarie perch to two native predators and to the introduced redfin perch, Perca fluviatilis. Our results showed that Macquarie perch generally avoided large-bodied native predators but was attracted to small-bodied native predators. Responses to large and small redfin perch lay between these two extremes, suggesting that the Macquarie perch does treat these foreign fish as potential threats. Macquarie perch relied on both visual and chemical cues to identify predators, although its response tended to be stronger when exposed to visual cues. The results suggest that Macquarie perch has the capacity to recognise and respond to invasive species in a threat-sensitive manner, which has positive implications for the conservation management of the species.

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3

Koster, W. M., D. R. Dawson, J. R. Morrongiello, and D. A. Crook. "Spawning season movements of Macquarie perch (Macquaria australasica) in the Yarra River, Victoria." Australian Journal of Zoology 61, no. 5 (2013): 386. http://dx.doi.org/10.1071/zo13054.

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The Macquarie perch (Macquaria australasica) is a threatened fish species that inhabits rivers and impoundments in south-eastern Australia. Previous studies have shown that Macquarie perch in impoundments exhibit synchronised upstream spawning migrations to shallow, fast-flowing habitats in the lower reaches of inflowing streams. There has been little study of movement behaviours of entirely riverine populations of Macquarie perch despite this being the species’ natural habitat. Here, radio-telemetry is used to test the hypothesis that riverine populations exhibit synchronised migrations during the spawning season. Thirty Macquarie perch in the Yarra River, Victoria, a translocated population outside of the species’ natural range, were radio-tagged before the late spring–early summer spawning season and their movements followed over a 10-month period (May 2011 to February 2012). Tagged fish typically occupied restricted reaches of stream (<450 m). Sixteen of the fish undertook occasional upstream or downstream movements (~250–1000 m) away from their usual locations, particularly associated with large flow variations during the spawning season. There was no evidence of synchronised migratory behaviour or movement of multiple fish to specific locations or habitats during the spawning season. Whilst further research over more years is needed to comprehensively document the spawning-related behaviours of riverine Macquarie perch, our study demonstrates that management of riverine populations of this threatened species cannot necessarily be based on the model of spawning behaviour developed for lacustrine populations.

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4

Scheelings, T. Franciscus, Ruth Tesdorpf, Celia Hooper, and Kathryn Stalder. "Chromobacterium violaceum Isolation from a Macquarie Turtle (Emydura macquarii)." Journal of Herpetological Medicine and Surgery 22, no. 1 (July 1, 2013): 22. http://dx.doi.org/10.5818/1529-9651-22.1-2.22.

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5

Tonkin, Zeb, Joanne Kearns, Justin O'Mahony, and John Mahoney. "Spatio-temporal spawning patterns of two riverine populations of the threatened Macquarie perch (Macquaria australasica)." Marine and Freshwater Research 67, no. 11 (2016): 1762. http://dx.doi.org/10.1071/mf15319.

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Understanding species-reproduction dynamics is vital for the management of riverine fish. Information on the spawning ecology of the endangered Australian Macquarie perch (Macquaria australasica) is based largely on data gathered from lacustrine populations, with uncertainty on the applicability such data has for managing riverine populations. The current study presents a first description of spawning patterns of two riverine populations of Macquarie perch in Victoria, Australia, using egg counts recorded across multiple sites and periods within the species core spawning window. Spawning intensity was highly variable between study sites, with 96 and 82% of eggs collected from a single site in the King Parrot Creek and Yarra River respectively. We also found a strong positive association between spawning and water temperature. Our results provide an important account of spatio-temporal spawning patterns of riverine Macquarie perch populations and lend some support for the transfer of information from lacustrine populations (as demonstrated by spawning habitat and temperature association). Although the spatial and temporal constraints of the present study must be considered, the results provide opportunity for further testing of the environmental effects, and management options aimed at enhancing spawning of this endangered species.

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6

Piggott, Maxine P. "An environmental DNA assay for detecting Macquarie perch, Macquaria australasica." Conservation Genetics Resources 9, no. 2 (January 19, 2017): 257–59. http://dx.doi.org/10.1007/s12686-016-0666-0.

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7

Broadhurst, B. T., B. C. Ebner, M. Lintermans, J. D. Thiem, and R. C. Clear. "Jailbreak: a fishway releases the endangered Macquarie perch from confinement below an anthropogenic barrier." Marine and Freshwater Research 64, no. 9 (2013): 900. http://dx.doi.org/10.1071/mf12245.

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Management interventions are often needed to facilitate the recovery of ecosystems affected as a result of human alteration. Population-level monitoring is often central to evaluating the effectiveness of specific on-ground actions. In the present study, we assessed the response of a remnant population of the endangered Macquarie perch (Macquaria australasica) to the construction of a rock ramp fishway on the Cotter River, Australia, over a 7-year period. Prior to fishway construction, this obligate riverine spawner had been previously confined to Cotter Reservoir and six kilometres of stream by a raised road-crossing. Surveys conducted in the 2 years following fishway completion failed to detect Macquarie perch upstream of the fishway. Subsequent surveys (6–7 years post-fishway completion) detected Macquarie perch up to 12 km upstream of the fishway. The number and distribution of smaller-sized individuals (0+ (<100-mm total length (TL) and 1+ (100- to >150-mm TL)) suggests that individuals found upstream of the fishway are resident stream fish and not fish that have migrated from known downstream spawning areas. The success of the fishway has been timely because enlargement of a downstream reservoir will inundate four kilometres of river and destroy the majority of spawning sites of this species downstream of the fishway in the Cotter River.

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8

Goesch, Keith. "Angus at Macquarie." Australian Journal of French Studies 38, no. 1 (January 2001): 13–15. http://dx.doi.org/10.3828/ajfs.38.1.13.

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9

Delbridge, Arthur, and Colin Yallop. "The Macquarie Dictionary." English Today 12, no. 1 (January 1996): 11–14. http://dx.doi.org/10.1017/s0266078400008725.

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10

Yallop, Colin. "Making the Macquarie." English Today 16, no. 1 (January 2000): 62–67. http://dx.doi.org/10.1017/s0266078400011482.

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11

Scheelings, T. Franciscus. "Use of Intravenous and Intramuscular Alfaxalone in Macquarie River Turtles (Emydura macquarii)." Journal of Herpetological Medicine and Surgery 23, no. 3 (September 1, 2013): 91. http://dx.doi.org/10.5818/1529-9651-23.3.91.

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12

Gan, Han Ming, Mun Hua Tan, and Christopher M. Austin. "The complete mitogenome of the Macquarie perch,Macquaria australasicaCuvier, 1830 (Teleostei: Percichthyidae)." Mitochondrial DNA 27, no. 1 (March 11, 2014): 383–84. http://dx.doi.org/10.3109/19401736.2014.895996.

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13

Farrington, Lachlan William. "Microsatellite markers for the threatened Australian freshwater fish, Macquarie Perch (Macquaria australasica)." Conservation Genetics Resources 4, no. 2 (September 7, 2011): 235–37. http://dx.doi.org/10.1007/s12686-011-9514-4.

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14

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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15

Slip, David J., and Harry R. Burton. "Accumulation of Fishing Debris, Plastic Litter, and Other Artefacts, on Heard and Macquarie Islands in the Southern Ocean." Environmental Conservation 18, no. 3 (1991): 249–54. http://dx.doi.org/10.1017/s0376892900022177.

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Sections of coastline of Heard and Macquarie Islands were surveyed for marine debris in the summer of 1987–88 and 1989, respectively. These surveys were carried out at the same sites as previous surveys in 1986–87 at Heard Island, and in 1988 at Macquarie Island. The minimum rate of artefact accumulation was 13 objects per km of shoreline per year for Heard Island, and 90 objects per km of shoreline per year for Macquarie Island. Drift-cards, released from known locations and collected on the two islands, show a similar artefact catchment area.Plastic litter was a major component of the debris at both islands. Fisheries-related debris accounted for 40% of all artefacts on Heard Island, compared with 29% on Macquarie Island. Entanglement of Fur Seals appears to be more common at Heard Island, while plastic ingestion by seabirds appears to be more common at Macquarie Island.

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16

STEPHENSON, STEVEN L. "Assemblages of myxomycetes on subantarctic Macquarie Island and tropical Christmas Island." Phytotaxa 464, no. 1 (October 14, 2020): 49–58. http://dx.doi.org/10.11646/phytotaxa.464.1.3.

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Christmas Island and Macquarie Island are two isolated islands of essentially the same size but providing very different environmental conditions for myxomycetes. The former is located in the tropics and the latter in the subantarctic. Surveys for myxomycetes carried out on Christmas Island in 2017 and Macquarie Island in 1995 yielded a total of 85 species. These data were published in two previous papers, but these papers did not consider the biogeographical distribution of all of the myxomycetes recorded from the two islands. Christmas Island and Macquarie Island share only nine species in common. Two of the 26 species recorded from Macquarie Island and one of the 68 species recorded Christmas Island were new to science.

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17

Spiegel, Frederick W., and Steven L. Stephenson. "Protostelids of Macquarie Island." Mycologia 92, no. 5 (September 2000): 849. http://dx.doi.org/10.2307/3761580.

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18

Parsons, T. G., and John Ritchie. "Lachlan Macquarie. A Biography." Labour History, no. 54 (1988): 125. http://dx.doi.org/10.2307/27504445.

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19

Acker, Agnès. "The Macquarie–Strasbourg Connection." Publications of the Astronomical Society of Australia 27, no. 2 (2010): 128. http://dx.doi.org/10.1071/as09056.

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Planetary nebulae (PN) are powerful tracers of both stellar and Galactic evolution. The capacity of PN to perform these studies is critically dependent on the size of the population, a major problem with a remarkable advance thanks to Quentin Parker and his team, who from 1997 to 2008 discovered an unprecedented sample of ∼1250 PN with the deep, high resolution AAO/UKST SuperCosmos Halpha Survey (SHS) of the Southern Galactic Plane (Parker et al. 2005), doubling the sample collected over the previous century, and leading to ∼2700 for the number of known PN today. A highly productive collaboration between Quentin and I has been established since 2001. Our complementary levels of expertise and facilities constitute the Macquarie/AAO/Strasbourg H-α Planetary Nebulae Project.The new MASH PN were added to the Centre de Données de Strasbourg as a new PN database continuously updated, and detailed in Parker et al. (2006) and Miszalski et al. (2008). In the framework of a cotutelle agreement between the Strasbourg and Macquarie universities, two PhD projects based on MASH PN have been conducted under the supervision of Quentin and myself, both projects focusing on the mysterious crowded region of the Galactic Bulge. Alan Peyaud proposed new constraints on late stages of stellar evolution and on the dynamics of the Galactic Bulge (defence 21 December 2005, Strasbourg). Brent Miszalski discovered ∼360 new PN (MASH-II) completing the largest and most representative sample of PN towards the Galactic bulge (defence 15 August 2009).

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20

Görlach, Manfred. "Macquarie dictionaries 1983-1990." English World-Wide 12, no. 1 (January 1, 1991): 130–37. http://dx.doi.org/10.1075/eww.12.1.11gor.

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21

Spiegel, Frederick W., and Steven L. Stephenson. "Protostelids of Macquarie Island." Mycologia 92, no. 5 (September 2000): 849–52. http://dx.doi.org/10.1080/00275514.2000.12061229.

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22

Rowan, Clare. "Macquarie University Gale Scholarship." Papers of the British School at Rome 79 (October 31, 2011): 369–70. http://dx.doi.org/10.1017/s0068246211000195.

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23

Ayer, Kavita. "Macquarie University Gale Scholarship." Papers of the British School at Rome 81 (September 26, 2013): 399–400. http://dx.doi.org/10.1017/s0068246213000366.

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24

FRAPPELL, L. O., and BRUCE F. HARRIS. "Bruce Mansfield at Macquarie." Journal of Religious History 14, no. 4 (June 28, 2008): 388–93. http://dx.doi.org/10.1111/j.1467-9809.1989.00388.pp.x.

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25

FRAPPELL, L. O., and BRUCE F. HARRIS. "Bruce Mansfield at Macquarie." Journal of Religious History 15, no. 4 (December 1989): 388–93. http://dx.doi.org/10.1111/j.1467-9809.1989.tb00210.x.

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26

Selkirk, J. M. "Active vegetation-banked terraces on Macquarie Island." Zeitschrift für Geomorphologie 42, no. 4 (December 10, 1998): 483–96. http://dx.doi.org/10.1127/zfg/42/1998/483.

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27

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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28

van den Hoff, John. "Dispersal of southern elephant seals (Mirounga leonina L.) marked at Macquarie Island." Wildlife Research 28, no. 4 (2001): 413. http://dx.doi.org/10.1071/wr00065.

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Southern elephant seals marked at Macquarie Island disperse to distant locations where they are sometimes seen during their moult and, for juveniles, a mid-year haul-out period (July–August). Most (87%) of these resighted seals were within 1000 km of Macquarie Island, and most commonly at Campbell Island (700 km to the north-east). The sex and age classes most likely to disperse there were males less than two years old. Male elephant seals of all ages were resighted significantly more often than females, the ratio being 2 : 1 (P > 0.05). Migration duration tended to increase with the seals’ age but migration distance was underestimated from resight observations when compared with known telemetry records. Emigration from the Macquarie Island population appears limited. From the resight effort at Campbell Island during 1995 the maximum proportion of the juvenile population from Macquarie Island to haul-out at Campbell Island was in the order of 0.0053.

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29

Broadhurst, B. T., B. C. Ebner, and R. C. Clear. "A rock-ramp fishway expands nursery grounds of the endangered Macquarie perch (Macquaria australasica)." Australian Journal of Zoology 60, no. 2 (2012): 91. http://dx.doi.org/10.1071/zo12002.

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Prior to installation of a fishway at a road crossing in 2001, a remnant population of endangered Macquarie perch (Macquaria australasica) was confined to a 6-km section of the Cotter River, Australian Capital Territory. The purpose of the fishway was to provide passage past a barrier and to increase the extent of spawning grounds for M. australasica to an additional 22 km of river. The aim of the current study was to quantify the extent of nursery grounds of M. australasica in the Cotter River catchment by developing and applying a rapid, non-destructive technique for surveying juvenile M. australasica. From October to January in 2006–07 and 2007–08, pools were surveyed by snorkelling in the lower Cotter River to detect juvenile and larval M. australasica. The 9-km study reach consisted of the four pools immediately upstream of Cotter Reservoir, seven pools further upstream but still downstream of the rockramp fishway and 14 pools upstream of the fishway. In 2006–07, juvenile M. australasica were detected at 22 of 25 pools, including 13 of 14 pools upstream of the fishway. In spring/summer 2007–08, low visibility conditions frequently occurred throughout the river preventing survey on several occasions. However, recruitment of M. australasica was again detected upstream of the fishway. The increased extent of the nursery grounds of this M. australasica population has proven to be timely as an enlargement of the Cotter Reservoir, due for completion in 2012, will inundate more than 90% of prefishway nursery grounds in the Cotter River. Our study has demonstrated the benefit of installing a fishway in expanding the nursery grounds and the number of recruits of a remnant population of the endangered M. australasica. We also demonstrate the benefits of employing a visual survey technique to quantify the extent of the riverine nursery grounds of a fish population.

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30

Tonkin, Zeb, Jarod Lyon, and Andrew Pickworth. "Spawning behaviour of the endangered Macquarie Perch Macquaria australasica in an upland Australian river." Ecological Management & Restoration 11, no. 3 (November 29, 2010): 223–26. http://dx.doi.org/10.1111/j.1442-8903.2010.00552.x.

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31

Broadhurst, Ben T., Brendan C. Ebner, and Rhian C. Clear. "Effects of radio-tagging on two-year-old, endangered Macquarie perch (Macquaria australasica: Percichthyidae)." Marine and Freshwater Research 60, no. 4 (2009): 341. http://dx.doi.org/10.1071/mf08142.

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Radio-telemetry provides an effective means of studying the habitat use of threatened fishes where repeated recapture of individuals is undesirable. In these circumstances, it is especially important to ensure that radio-tagging methods are appropriate for the particular species of interest. An aquaria-based evaluation of three methods for radio-tagging two-year-old Macquaria australasica was conducted until 28 days post-surgery. Successful radio-tagging was determined from three indicators: (1) survival; (2) healing of the surgical incision or tag attachment site; and (3) resumption of feeding. Internal-coil radio-tags proved to be the most suitable radio-tag type, with complete survivorship and tag retention for the duration of the trial and fish commonly resuming normal feeding behaviour within two days post-surgery. In contrast, implanting a radio-tag internally and exiting a whip antenna is unsuitable for M. australasica on the basis of poor survivorship, rejection of radio-tags, and prolonged alteration of feeding behaviour. No mortality or radio-tag rejection was observed in association with externally attached whip-antenna radio-tags, and post-surgery resumption of feeding was comparable with that of fish with internal-coil radio-tags. However, external radio-tags caused substantial abrasion of the epidermis and loss of scales. Internal-coil tags should be applied in radio-tracking studies of this species.

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32

LÖRZ, ANNE-NINA. "First records of Epimeriidae and Iphimediidae (Crustacea, Amphipoda) from Macquarie Ridge, with description of a new species and its juveniles." Zootaxa 3200, no. 1 (February 21, 2012): 49. http://dx.doi.org/10.11646/zootaxa.3200.1.3.

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Amphipod species of the families Epimeriidae and Iphimediidae are recorded for the first time from Macquarie Ridge, asparsely sampled mid-ocean ridge between New Zealand and Antarctica. Epimeria ashleyi sp. nov. collected from twoseamounts on the Macquarie Ridge between 676–1025 m water depth is described in detail.Epimeria ashleyi sp. nov. can be distinguished from similar species by the unique combination of following charac-ters: pointed coxa 1–3, dorsal doublecarinae as well as three lateral projections on epimeral plates 1–3. The juveniles ofthe new species are described and are considerably different from the adults. Additionally, Labriphimedia pulchridentata(Stebbing, 1888), previously known only from Heard Island, is recorded from Macquarie Ridge seamounts with first images of its colour in life.

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33

Sluys, R., and IR Ball. "A synopsis of the marine triclads of Australia and New Zealand (Platyhelminthes : Tricladida : Maricola)." Invertebrate Systematics 2, no. 7 (1988): 915. http://dx.doi.org/10.1071/it9880915.

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An account is given of the 16 species of marine triclads now known from Australia and New Zealand and their subantarctic territories. These include five here newly described, three not previously recorded from the region, and one problematic species. A key to the species is provided and descriptions of the previously known species are corrected and/or supplemented. Two new genera are established, one – Jugatovaria – for a new species and another one – Obrimoposthia – to contain the new species O. acuminata together with three former members of the genus Procerodes. Procerodes hallezi, reported by Nurse (1964) from Macquarie I., is conspecific with O. ohlini. The species Miava ernesti is transferred to the genus Synsiphonium, and Palombiella macquari is established as its junior synonym.

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34

Lintermans, Mark. "Finding the needle in the haystack: comparing sampling methods for detecting an endangered freshwater fish." Marine and Freshwater Research 67, no. 11 (2016): 1740. http://dx.doi.org/10.1071/mf14346.

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Accurately detecting the presence or absence of threatened species is vital for threatened species management, and the detection power of individual sampling methods can vary significantly between species and life stages. The present study compares the detection power of six sampling methods in sampling the endangered Macquarie perch in riverine habitats in south-eastern Australia. In an initial survey in 1998 and 1999, fyke nets captured Macquarie perch at 100% of sites where the species was detected; gill-nets captured the species at 86%; with no other method having >50% detection efficiency. Most Macquarie perch were captured by fyke nets (90% in 1998 and 94% in 1999), followed by gill-nets (7 and 2%). A monitoring program at one of the survey sites over 7 years returned similar results with fyke nets detecting the species in all years. Fyke nets captured primarily young-of-year (YOY) individuals, whereas gill-nets captured adults and subadults. Boat electrofishing returned a high level of false negatives for Macquarie perch. Future sampling for this species should employ fyke and gill-nets to adequately characterise population structure (adults, juveniles, YOY), minimise false negatives and detect the occurrence of successful breeding the previous year.

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35

Chessman, Bruce C. "Distribution, abundance and population structure of the threatened western saw-shelled turtle, Myuchelys bellii, in New South Wales, Australia." Australian Journal of Zoology 63, no. 4 (2015): 245. http://dx.doi.org/10.1071/zo15034.

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The western saw-shelled turtle is listed as threatened globally, nationally, and within the Australian state of New South Wales. Although nearly all of the geographic range of the species lies within New South Wales, little information has been available on the distribution, abundance and structure of New South Wales populations. Through a survey of 60 sites in 2012–15, I established that M. bellii is much more widely distributed in New South Wales than has previously been recognised, comprising four disjunct populations, including two in the New South Wales portion of the Border Rivers basin. It occurs mainly in larger, cooler rivers upstream of barriers to dispersal of the Macquarie turtle, Emydura macquarii macquarii. Although M. bellii is locally abundant, its populations are greatly dominated by large adults and recruitment appears to be low. Eye abnormalities are common in some populations but do not necessarily impair body condition or preclude long-term survival. The species is threatened by competition with E. macquarii, which appears to be expanding its range through translocation by humans, and possibly by predation, disease and drought. Long-term monitoring of M. bellii is needed to assess population trends and responses to threats, and active management to restrict the further spread of E. macquarii is probably required to ensure the persistence of M. bellii throughout its current range.

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36

Lee, Murray. "Framing Dissent at Macquarie Fields." Current Issues in Criminal Justice 19, no. 2 (November 2007): 211–18. http://dx.doi.org/10.1080/10345329.2007.12036427.

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37

Kratzing, Marian. "Career Assessment at Macquarie University." Australian Journal of Career Development 4, no. 3 (October 1995): 21–24. http://dx.doi.org/10.1177/103841629500400307.

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38

O'Hara, Tim. "Origin of Macquarie Island echinoderms." Polar Biology 20, no. 2 (July 31, 1998): 143–51. http://dx.doi.org/10.1007/s003000050289.

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39

Stephenson, Steven L., Gary A. Laursen, and Rodney D. Seppelt. "Myxomycetes of subantarctic Macquarie Island." Australian Journal of Botany 55, no. 4 (2007): 439. http://dx.doi.org/10.1071/bt06169.

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Macquarie Island is an oceanic island located 1000 km south-east of Tasmania. The island, which lies close to but north of the Antarctic Convergence, is the southernmost island in the world with a fairly complete cover of vegetation. However, the vascular flora is impoverished and consists of only 46 species. During the period of late January to late April of 1995, 412 field collections of myxomycetes, representing at least 22 species in 11 genera, were obtained during the course of an intensive survey of fungal biodiversity on Macquarie Island. Moist-chamber cultures prepared with various types of plant debris yielded only 14 collections, but this total included three additional species and two additional genera. All but four of the species we recorded from the island are new records for the South Polar Region. Most field collections were associated with Stilbocarpa polaris (Araliaceae) and Pleurophyllum hookeri (Asteraceae), the usual dominants in the herbfield communities that commonly occur on upper beach slopes and coastal terraces. Trichia verrucosa (80 collections), Diderma alpinum (78) and Craterium leucocephalum (59) were the most consistently abundant myxomycetes. Other species represented by ≥15 collections were Didymium cf. dubium, Collaria lurida, Lamproderma arcyrioides and Didymium macquariense. The latter is a species new to science that was described from material collected during the present study. All of the species of myxomycetes now known to occur on Macquarie Island are members of the Trichiales, Physarales, Stemonitales or Echinosteliales; no member of the Liceales or Ceratiomyxales was ever collected.

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Roe, Jill. "Duncan waterson and Macquarie University." Journal of Australian Studies 25, no. 69 (January 2001): 5–8. http://dx.doi.org/10.1080/14443050109387681.

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Thiem, Jason D., Ben T. Broadhurst, Mark Lintermans, Brendan C. Ebner, Rhian C. Clear, and Daniel Wright. "Seasonal differences in the diel movements of Macquarie perch (Macquaria australasica) in an upland reservoir." Ecology of Freshwater Fish 22, no. 1 (November 1, 2012): 145–56. http://dx.doi.org/10.1111/eff.12012.

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Flynn, A. J., and A. Williams. "Lanternfish (Pisces: Myctophidae) biomass distribution and oceanographic - topographic associations at Macquarie Island, Southern Ocean." Marine and Freshwater Research 63, no. 3 (2012): 251. http://dx.doi.org/10.1071/mf11163.

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Lanternfishes, which are important prey for demersal and diving predators at Macquarie Island in the Southern Ocean, have spatial patterns of distribution over the Macquarie Ridge that suggest biomass is enhanced where the Subantarctic Front (SAF) interacts with a break in the topography of the Ridge (the ‘Ridge Gap’). The summertime lanternfish assemblage, documented here for the first time, comprised 23 taxa, dominated by Krefftichthys anderssoni and Gymnoscopelus braueri. Mean lanternfish biomass was highest (3.13 g 1000 m–3) in the Ridge Gap habitat. Lowest mean biomass (0.71 g 1000 m–3) was recorded up-current of the SAF over the Abyssal Plain and intermediate biomass (1.26 g 1000 m–3) was recorded over the Macquarie Ridge. At Ridge Gap, a high abundance of K. anderssoni was recorded in the shallowest stratum (0–250 m) during the day. We hypothesised that the oceanographic–topographic interaction between the SAF and Ridge Gap creates eddy systems and productivity fronts that passively entrain and/or actively attract lanternfishes to the Ridge Gap area. This oceanographic–topographic interaction depends on the spatial stability of the SAF in relation to the Macquarie Ridge and Ridge Gap and is vulnerable to climate-mediated change that may have flow-on effects to predators with commercial and conservation significance.

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Harris, Stephen, Geof Copson, and Louisa d'Arville. "Notes on the sea caves of sub-Antarctic Macquarie Island, Southern Ocean." Polar Record 46, no. 2 (December 4, 2009): 136–45. http://dx.doi.org/10.1017/s0032247409990374.

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ABSTRACTCaves of marine origin occur in tectonically uplifted stacks on the coastal terrace and in plateau edge cliffs at a number of locations around Macquarie Island. Some of the caves have been located and their distributions mapped. Four of the best known caves are mapped in detail. Aspects of their geology, structure and biology, including speleothem development, clastic deposits, faunal remains and subfossil deposits are explored. Many of these caves contain deposits, which may have the potential to be investigated, as beach and peat deposits have been, for dating key time periods in the island's evolution. The palaeoenvironmental research potential of the sea caves on Macquarie Island has yet to be exploited. Further knowledge about these caves will assist in the understanding of the processes that have acted on Macquarie Island and other polar and sub-polar islands.

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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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Lintermans, Mark. "The rise and fall of a translocated population of the endangered Macquarie perch, Macquaria australasica, in south-eastern Australia." Marine and Freshwater Research 64, no. 9 (2013): 838. http://dx.doi.org/10.1071/mf12270.

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Translocation is an increasingly popular conservation management activity worldwide, but the success of translocation is often not measured or reported. A population of the endangered Macquarie perch was imperilled by the damming in 1977 of the Queanbeyan River, near Canberra in south-eastern Australia. In November 1980, 66 adult Macquarie perch (309–389-mm total length) individuals were collected from the newlyformed reservoir, and translocated approximately 4 km upstream into the Queanbeyan River past a waterfall (which prevented access to spawning habitat). Five years of post-translocation monitoring at the release sites resulted in the capture of only a single individual in late 1981. Consequently, monitoring ceased because the translocation was assumed to have failed. However, subsequent angler reports and a preliminary survey in 1991 confirmed that some translocated fish had survived, and a small recruiting population had established. More intensive follow-up surveys and subsequent monitoring from 1996 to 2006 demonstrated an established population with consistent recruitment until 2001. However, after 2001, there was no evidence of recruitment and the population is now undetectable, with the prolonged ‘millennium drought’ (1997–2010) being the most plausible cause. The present study demonstrates the potentially ephemeral nature of assessments of success and failure, and the importance of targeted long-term monitoring programs.

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Hajkowicz, L. A. "Magnetoconjugate phenomena in Alaska and Macquarie Is., Australia in 2003: position of the global maximum iso-aurorae." Annales Geophysicae 24, no. 10 (October 20, 2006): 2611–17. http://dx.doi.org/10.5194/angeo-24-2611-2006.

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Abstract. An extensive magnetometer network in Alaska and Canada (consisting of 6 auroral and sub-auroral stations) and at Macquarie Is. (Australia) was used to study magnetoconjugate phenomena in 2003, using the H-component magnetograms. Altogether 193 magnetically disturbed days (with ΣKp≥10) were used in the analysis. The maximum negative swing in the H-component (ΔH) was assigned for each day from the auroral conjugate station's data. Two types of magnetoconjugate data were found: Type-1 when the daily (00:00–24:00 h UT) substorm activity was faithfully reproduced in the H-component variations in the northern and southern auroral zones, and Type-2 when a major peak in disturbance was largely missing in one conjugate location. A distinct maximum in the occurrence of the Type-1 events was in the southern summer (northern winter), reaching almost 70 per cent of cases. A minimum in this type of events was in the southern autumn and winter (around 40%). The correlation between ΣKp and ΔH for auroral stations faithfully reproduced the percentage occurrence of the Type-1 events for various seasons, with the maximum correlation coefficient r≈0.8 in summer. The time conjugacy of the events (i.e. the events occurring with a small time displacement in the southern and northern auroral zones) was highest for the auroral stations located close to the theoretical conjugate point location at L-value ≈ 5 (i.e. College and Macquarie Is.). The substorm onsets started earlier at the stations positioned east of the conjugate point of Macquarie Is. in spring and winter, indicating a westward drift of auroral disturbance with velocities of 1.4–1.6 km/s. The magnitude of average ΔH increased rapidly past the invariant latitude of Macquarie Is. towards the latitude of its nearest northern conjugate station College , particularly in spring. The average level of disturbance was consistently lower by about 30% at Macquarie Is. than at College. Since Macquarie Is. is the only available auroral station in the southern auroral zone the maximum southern auroral activity level (maximum iso-aurorae) should be inferred from magnetic data obtained at a northern conjugate station positioned at a slightly higher L-value, such as College (L-value = 5.73). It is concluded from the above considerations that the maximum iso-aurorae is located at a shell with L-value ≥ 5.73 in both hemispheres.

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Harris, M. P., P. M. Selkirk, R. D. Seppelt, and D. R. Selkirk. "Subantarctic Macquarie Island: Environment and Biology." Journal of Applied Ecology 28, no. 1 (April 1991): 363. http://dx.doi.org/10.2307/2404142.

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Spence, John R., P. M. Selkirk, R. D. Seppelt, and D. R. Selkirk. "Subantarctic Macquarie Island: Environment and Biology." Arctic and Alpine Research 24, no. 1 (February 1992): 95. http://dx.doi.org/10.2307/1551328.

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49

Stephenson, Steven L., Gary A. Laursen, John C. Landolt, and Rodney D. Seppelt. "Dictyostelium mucoroides from Subantarctic Macquarie Island." Mycologia 90, no. 3 (May 1998): 368. http://dx.doi.org/10.2307/3761394.

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Das, Shamita. "The Macquarie Ridge earthquake of 1989." Geophysical Journal International 115, no. 3 (December 1993): 778–98. http://dx.doi.org/10.1111/j.1365-246x.1993.tb01492.x.

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