Готові списки джерел за темами / Nature conservation Victoria French Island

Добірка наукової літератури з теми "Nature conservation Victoria French Island"

Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 28 січня 2023

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Статті в журналах з теми "Nature conservation Victoria French Island"

Frankham, Greta J., Robert L. Reed, Terry P. Fletcher, and Kath A. Handasyde. "Population ecology of the long-nosed potoroo (Potorous tridactylus) on French Island, Victoria." Australian Mammalogy 33, no. 1 (2011): 73. http://dx.doi.org/10.1071/am10051.

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The elusive nature of the long-nosed potoroo (Potorous tridactylus) has hindered the collection of long-term data for this threatened species. Between June 2005 and May 2009, data on the ecology of a wild population of long-nosed potoroos located on French Island, Victoria, were collected during a series of research projects. Over this period, 33 individual potoroos were trapped a total of 251 times. Up to nine individuals were known to be alive at once on the 15-ha study site of mature remnant native forest. Adult potoroos showed high site fidelity and significant sexual size dimorphism, with males heavier and having longer head and pes lengths than females. Congruent with other studies, we found no evidence of seasonality in breeding. Births occurred in every month of the year and the testis volume of males did not vary throughout the year. In contrast to previous studies, however, we did not observe peaks in breeding activity. Our research and review of existing literature suggests that the ecology of the long-nosed potoroo is strongly influenced by local environmental conditions and emphasises the need to consider long-term and site-specific data when developing management strategies to conserve this ecologically important species.

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TAYLOR, ANDREA C., JENNY MARSHALL GRAVES, NEIL D. MURRAY, STEPHEN J. O'BRIEN, N. YUHKI, and BILL SHERWIN. "Conservation genetics of the koala (Phascolarctos cinereus): low mitochondrial DNA variation amongst southern Australian populations." Genetical Research 69, no. 1 (February 1997): 25–33. http://dx.doi.org/10.1017/s0016672397002607.

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Koala (Phascolarctos cinereus) populations in southern Australia have a history of bottlenecks – earlier this century the species became extinct in South Australia, and almost so in Victoria. Subsequently large numbers of animals from island populations (founded from very few animals) have been translocated back to mainland sites and to other islands in the region. As part of a larger study of the genetic structure of koala populations in southern Australia, we have undertaken a survey of mitochondrial DNA restriction fragment length polymorphism (mtDNA-RFLP) variability. Genomic DNA from 91 koalas from five populations was examined using 23 restriction enzymes, and mtDNA fragments were detected using a domestic cat full-length mtDNA clone. Only one of the enzymes, TaqI, revealed polymorphism – a relatively low amount of variation compared with other mammals, although low mtDNA-RFLP variation has also been reported in Queensland koalas. French Island and populations established predominantly from French Island immigrant koalas, either directly or via other island populations, were indistinguishable by haplotype frequencies. The mtDNA data are thus consistent with the interpretation that the koala translocation programme has homogenized gene frequencies amongst those populations involved. South Gippsland is not recorded as having received translocated koalas directly, and has significantly different mtDNA-RFLP haplotype frequencies from all other populations examined. The fact that this distinction was not previously observed in nuclear gene frequencies may reflect predominantly male-mediated dispersal in koalas.

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Borner, Monica. "The rehabilitated chimpanzees of Rubondo Island." Oryx 19, no. 3 (July 1985): 151–54. http://dx.doi.org/10.1017/s003060530002531x.

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Between 1966 and 1969 17 chimpanzees, which had all been captured in the wild and had spent various amounts of time in European zoos, were released in Rubondo Island National Park in Lake Victoria, Tanzania. Now there is a healthy population of at least 20 chimpanzees, and it is likely that there is now a second generation of Rubondo-born animals. The author, who has been recording sightings of the chimpanzees since 1978, discusses this early rehabilitation experiment, sets it in the context of others and examines the problems of how best to cope with those animals that are confiscated while enforcing the laws prohibiting the capture of wild chimpanzees.

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McLean, Natasha, and Kathrine A. Handasyde. "Sexual maturity, factors affecting the breeding season and breeding in consecutive seasons in populations of overabundant Victorian koalas (Phascolarctos cinereus)." Australian Journal of Zoology 54, no. 6 (2006): 385. http://dx.doi.org/10.1071/zo06015.

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It is important to have knowledge of basic population parameters to understand how these vary geographically and temporally and how they contribute to population dynamics. This paper investigates three of these parameters in Victorian koala populations: sexual maturity, aspects of the breeding season, and the continuity of individuals’ breeding. The investigation was carried out in koalas of known-age in two free-living (Redbill Creek on French Island and Brisbane Ranges) and one semi-captive (the Koala Conservation Centre on Phillip Island) population as well as koalas of unknown age in four Victorian populations of overabundant koalas: Mt Eccles and Framlingham in south-west Victoria, French Island in Western Port and Snake Island in south Gippsland. At sexual maturity, female koalas had a mean age (±95% confidence interval) of 24.4 months (23.5–25.3 months), a mean head length of 125 mm (124–127 mm) and a mean body mass of 6.6 kg (6.3–6.8 kg). Only 7.4% of independent females (of unknown age) were carrying young when they weighed less than 6 kg. The breeding season was more restricted in the south-west populations. At Framlingham and Mt Eccles 85% and 91% of births, respectively, occurred between December and March. At Snake and French Islands only 46% and 53% of births, respectively, were recorded in the same period. In the Chlamydia-free population (Red Bill Creek) none of the koalas that were monitored stopped breeding and then resumed breeding in a subsequent season whereas many females from Chlamydia-infected populations (Brisbane Ranges and the Koala Conservation Centre) did so. This variation in reproductive patterns is likely to make an important contribution to the variation in the demography observed in different koala populations.

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Montague, T. L., and J. M. Cullen. "The Diet of the Little PenguinEudyptula minorat Phillip Island, Victoria." Emu - Austral Ornithology 88, no. 3 (September 1988): 138–49. http://dx.doi.org/10.1071/mu9880138.

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Robinet, O., F. Beugnet, D. Dulieu, and Ph Chardonnet. "The Ouvéa parakeet – state of knowledge and conservation status." Oryx 29, no. 2 (April 1995): 143–50. http://dx.doi.org/10.1017/s0030605300021025.

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New Caledonia, a French territory in the south-west Pacific has a very high number of endemic taxa. The endemic fauna include a monotypic genus of parakeets – Eunymphicus. One subspecies, Eunymphicus cornutus uvaeensis, which is endemic to the island of Ouvéa in the Loyalty Islands, is seriously threatened by degradation of its natural habitat, natural predators and capture for sale to collectors. There are now only 200–500 individuals left in the wild. The parakeet is the emblem of Ouv–a and local people, together with research scientists, have formed a society with the aims of studying the parakeet in its natural environment, making the general public aware of its conservation requirements, combating smuggling, increasing its population by breeding it in captivity and, if possible, introducing it on to a neighbouring island.

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Baird, Bob, and Peter Dann. "The breeding biology of Hooded Plovers,Thinornis rubricollis, on Phillip Island, Victoria." Emu - Austral Ornithology 103, no. 4 (December 2003): 323–28. http://dx.doi.org/10.1071/mu02031.

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Watling, Dick. "Notes on the status of Kuhl's Lorikeet Vini kuhlii in the Northern Line Islands, Kiribati." Bird Conservation International 5, no. 4 (December 1995): 481–89. http://dx.doi.org/10.1017/s0959270900001192.

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SummaryKuhl's Lorikeet Vini kuhlii has a precarious status reflected by its disjunct distribution in the Pacific, with surviving populations in the Northern Line (Kiribati) and Austral Islands (French Polynesia) some 3,000 km apart, possibly as a result of Polynesian trade in red feathers. The species is extinct in the southern Cook Islands. On Rimatara (Austral Islands), where it is believed indigenous, it is still common but the recent introduction of the Rattus norvegicus is of concern. In the Northern Line Islands, R. rattus appears to have all but extirpated the lorikeet on Tabuaeran (Fanning Island), but one small population has apparently survived for over 70 years, an explanation for which may guide in situ conservation of Vini lorikeets on ship-rat-infested islands elsewhere. The arid and unpredictable climate of Kiritimati (Christmas Island) may preclude the establishment of lorikeets. Only on Teraina (Washington Island), where over 1,000 V. kuhlii survive, are there no confirmed threats and good in situ conservation potential.

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Chiaradia, A., P. Dann, R. Jessop, and P. Collins. "The diet of Crested Tern (Sterna bergii) chicks on Phillip Island, Victoria, Australia." Emu - Austral Ornithology 102, no. 4 (December 2002): 367–71. http://dx.doi.org/10.1071/mu02004.

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Kuehler, C., A. Lieberman, A. Varney, P. Unitt, R. M. Sulpice, J. Azua, and B. Tehevini. "Translocation of Ultramarine Lories Vini ultramarina in the Marquesas Islands: Ua Huka to Fatu Hiva." Bird Conservation International 7, no. 1 (March 1997): 69–79. http://dx.doi.org/10.1017/s0959270900001416.

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SummaryThe Ultramarine Lory (Ultramarine Lorikeet, Marquesas Lorikeet, Pihiti) Vini ultramarina is one of the most threatened insular Lory species. Endemic to the Marquesas Islands, where it probably once ranged throughout the archipelago, it has been nearly extirpated from all but the tiny island of Ua Huka. Given the vulnerability of a single population inhabiting one small island, and the decline of the species in recent years, establishment of the Ultramarine Lory on another less disturbed island within its historic range has been proposed as a conservation strategy. This paper describes a 1991 survey evaluating the status of the Ultramarine Lory in the Marquesas Islands, and three subsequent translocations of birds from the island of Ua Huka to the island of Fatu Hiva. Twenty-nine birds were relocated during the period from 1992 to 1994 at the request of the Delegation de L'Environnement, French Polynesia. A preliminary survey, prior to the third translocation, indicates that previously transferred birds are surviving and may be reproducing; an intensive survey is planned in 1997.

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