Academic literature on the topic 'Ecology Victoria French Island'
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Journal articles on the topic "Ecology Victoria French Island"
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Johnston, M. J., M. J. Shaw, A. Robley, and N. K. Schedvin. "Bait uptake by feral cats on French Island, Victoria." Australian Mammalogy 29, no. 1 (2007): 77. http://dx.doi.org/10.1071/am07009.
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Management of feral cat (Felis catus) populations is currently limited by the lack of a control technique that is cost-effective, target-specific and suitable for broad-scale application. This paper describes two non-toxic bait acceptance trials undertaken on French Island in Western Port, Victoria in south?eastern Australia. Moist meat baits were injected with the marker Rhodamine B (RB), and surface distributed along the existing road and firebreak network. Subsequent trapping of feral cats facilitated collection of whiskers, which were analysed using ultraviolet fluorescence microscopy for the presence of RB marking. Twenty-four and forty-seven cats respectively were recovered in each trial with fifty per cent of these individuals found to have consumed at least one bait in either trial. Results are discussed with reference to the development of a felid-specific toxicant baiting technique.
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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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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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Martin, R. W. "Overbrowsing, and decline of a population of the koala, Phascolarctos cinereus, in Victoria. II. Population condition." Wildlife Research 12, no. 3 (1985): 367. http://dx.doi.org/10.1071/wr9850367.
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Juvenile and sub-adult koalas from a population at Walkerville, Victoria, which was severely defoliating its preferred food trees, had significantly lower growth rates than animals from a population on French Island, Victoria. Mature males from Walkerville were significantly smaller than French Island males in most age classes. There was no significant difference between the body weights of mature females of the 2 populations. Haematological tests on the females showed that nutritionally induced anaemia was significant in the Walkerville animals by Jan. 1981. Heavy tick loads probably exacerbated the effects of the food shortage on the animals' condition, but were not the cause of the anaemia. The low fertility rate of the Walkerville females appeared to be due to their poor nutritional state and to reproductive tract disease.
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Davies, Christopher, Wendy Wright, Faye Wedrowicz, Carlo Pacioni, and Fiona E. Hogan. "Delineating genetic management units of sambar deer (." Wildlife Research 49, no. 2 (October 20, 2021): 147–57. http://dx.doi.org/10.1071/wr19235.
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Abstract Context Invasive species are major drivers of biodiversity loss, requiring management to reduce their ecological impacts. Population genetics can be applied to delineate management units, providing information that can help plan and improve control strategies. Aim The present study aims to use a genetic approach to test the existence of three previously proposed sambar deer populations in south-eastern Australia. In doing so, the study aims to delineate management units of sambar deer in south-eastern Australia. Methods Sambar deer DNA was sourced opportunistically from tissue samples and targeted scat collection. Samples were collected from three areas in Victoria, south-eastern Australia: Mt Cole (MC), French Island (FI) and eastern Victoria (EV). Contemporary population structure was assessed using a suite of 11 polymorphic microsatellite markers. The number of maternal sambar deer lineages in south-eastern Australia was investigated through sequencing of the mitochondrial (mt)DNA control region. Key results Three distinct genetic clusters were identified. Differentiation among inferred clusters was found to be high, with FST ranging from 0.24 between EV and FI clusters and 0.48 between MC and FI clusters. Two mtDNA haplotypes were identified; R.u1 was found throughout EV and FI, and R.u2 was unique to MC. DNA isolated from scats provided reliable data and proved critical for sampling areas where hunting and culling of deer are not generally undertaken. Conclusions Three genetically distinct sambar deer management units in south-eastern Australia are defined – MC, FI and EV. Sambar deer control strategies should be applied to each management unit independently. This may be difficult or infeasible for the EV management unit, which is large and geographically complex. Further research may help identify additional fine-scale genetic structure in EV, allowing smaller, more practicable management units to be identified. Implications Genetic data can be used to identify management units for invasive species, which will be critical for the development of future management strategies and improving control operations. The approach outlined here could also be applied to improve the management of other introduced deer species in south-eastern Australia.
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Saarela, Jeffery M., Paul C. Sokoloff, Lynn J. Gillespie, Roger D. Bull, Bruce A. Bennett, and Serguei Ponomarenko. "Vascular plants of Victoria Island (Northwest Territories and Nunavut, Canada): a specimen-based study of an Arctic flora." PhytoKeys 141 (March 6, 2020): 1–330. http://dx.doi.org/10.3897/phytokeys.141.48810.
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Victoria Island in Canada’s western Arctic is the eighth largest island in the world and the second largest in Canada. Here, we report the results of a floristic study of vascular plant diversity of Victoria Island. The study is based on a specimen-based dataset comprising 7031 unique collections from the island, including some 2870 new collections gathered between 2008 and 2019 by the authors and nearly 1000 specimens variously gathered by N. Polunin (in 1947), M. Oldenburg (1940s–1950s) and S. Edlund (1980s) that, until recently, were part of the unprocessed backlog of the National Herbarium of Canada and unavailable to researchers. Results are presented in an annotated checklist, including keys and distribution maps for all taxa, citation of specimens, comments on taxonomy, distribution and the history of documentation of taxa across the island, and photographs for a subset of taxa. The vascular plant flora of Victoria Island comprises 38 families, 108 genera, 272 species, and 17 additional taxa. Of the 289 taxa known on the island, 237 are recorded from the Northwest Territories portion of the island and 277 from the Nunavut part. Thirty-nine taxa are known on the island from a single collection, seven from two collections and three from three collections. Twenty-one taxa in eight families are newly recorded for the flora of Victoria Island: Artemisia tilesii, Senecio lugens, Taraxacum scopulorum (Asteraceae); Crucihimalaya bursifolia, Draba fladnizensis, D. juvenilis, D. pilosa, D. simmonsii (Brassicaceae); Carex bigelowii subsp. bigelowii, Eriophorum russeolum subsp. albidum (Cyperaceae); Anthoxanthum monticola subsp. monticola, Bromus pumpellianus, Deschampsia cespitosa subsp. cespitosa, D. sukatschewii, Festuca rubra subsp. rubra, Lolium perenne, Poa pratensis subsp. pratensis (Poaceae); Stuckenia filiformis (Potamogetonaceae); Potentilla × prostrata (Rosaceae); Galium aparine (Rubiaceae); and Salix ovalifolia var. ovalifolia (Salicaceae). Eight of these are new to the flora of the Canadian Arctic Archipelago: Senecio lugens, Draba juvenilis, D. pilosa, Anthoxanthum monticola subsp. monticola, Bromus pumpellianus, Deschampsia cespitosa subsp. cespitosa, Poa pratensis subsp. pratensis and Salix ovalifolia var. ovalifolia. One of these, Galium aparine, is newly recorded for the flora of Nunavut. Four first records for Victoria Island are introduced plants discovered in Cambridge Bay in 2017: three grasses (Festuca rubra subsp. rubra, Lolium perenne, and Poa pratensis subsp. pratensis) and Galium aparine. One taxon, Juncus arcticus subsp. arcticus, is newly recorded from the Northwest Territories. Of the general areas on Victoria Island that have been botanically explored the most, the greatest diversity of vascular plants is recorded in Ulukhaktok (194 taxa) and the next most diverse area is Cambridge Bay (183 taxa). The floristic data presented here represent a new baseline on which continued exploration of the vascular flora of Victoria Island – particularly the numerous areas of the island that remain unexplored or poorly explored botanically – will build.
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Legione, Alistair R., Jemima Amery-Gale, Michael Lynch, Leesa Haynes, James R. Gilkerson, Fiona M. Sansom, and Joanne M. Devlin. "Chlamydia pecorum Infection in Free-ranging Koalas (Phascolarctos cinereus) on French Island, Victoria, Australia." Journal of Wildlife Diseases 52, no. 2 (April 28, 2016): 426–29. http://dx.doi.org/10.7589/2015-10-276.
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Smykla, Jerzy, Beata Krzewicka, Karina Wilk, Steven Emslie, and Lucyna Śliwa. "Additions to the lichen flora of Victoria Land, Antarctica." Polish Polar Research 32, no. 2 (January 1, 2011): 123–38. http://dx.doi.org/10.2478/v10183-011-0009-5.
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Additions to the lichen flora of Victoria Land, Antarctica Lichens of relict penguin colonies and sites affected by active penguin colonies were investigated in Victoria Land, Ross Sea sector, continental Antarctica. A total of 17 coastal sites, seven in northern and ten in southern Victoria Land, have been investigated across 7° of latitude from 71° to 78°S. Altogether 40 taxa of lichens have been identified. Four of the recorded species are new to the Antarctic - Caloplaca erecta, C. soropelta, C. tominii and Physcia tenella; two species are new to the Victoria Land area - Lecania nylanderiana and Lecanora polytropa. The first lichen records from Beaufort Island are also provided. Data presented here expand the knowledge on the occurrence, diversity and distribution of Victoria Land lichens.
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Friesen, T. Max, and Lauren E. Y. Norman. "The Pembroke Site: Thule Inuit Migrants on Southern Victoria Island." ARCTIC 69, no. 1 (March 1, 2016): 1. http://dx.doi.org/10.14430/arctic4545.
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This paper presents description and interpretation of the Pembroke site, the earliest known Thule Inuit occupation in the southeastern Victoria Island region, Nunavut. The site has 11 extant dwellings, including five heavy tent rings, five light semi-subterranean dwellings, and a <em>qalgiq </em>(large communal structure). The site’s economy revolved mainly around the acquisition of caribou, Arctic char, and lake trout, with minimal consumption of sea mammals. Radiocarbon dates, reinforced by artifact analyses, indicate an occupation around AD 1400. Based on several lines of evidence, including the extremely small artifact samples, the site is interpreted as having been occupied relatively briefly. It represents the first colonization of the region by Thule people, approximately 200 years after the initial Thule migration from Alaska into the eastern Arctic. Thus, it documents a second migration wave: an expansion of Thule peoples from their initially occupied territories to other, in some ways less optimal, regions
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Hall, K. R. L., and J. S. Gartlan. "ECOLOGY AND BEAVIOUR OF THE VERVET MONKEY, CERCOPITHECUS AETHIOPS, LOLUI ISLAND, LAKE VICTORIA." Proceedings of the Zoological Society of London 145, no. 1 (August 20, 2009): 37–56. http://dx.doi.org/10.1111/j.1469-7998.1965.tb01999.x.
Full textDissertations / Theses on the topic "Ecology Victoria French Island"
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Fairhead, Victoria A. "Ecophysiology and production ecology of the kelp ecklonia radiata (C.Agardh) J.Agardh, at West Island, South Australia / Victoria Anne Fairhead." 2002. http://hdl.handle.net/2440/21777.
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"November 2001"Bibliography: leaves 132-156.
xii, 166 leaves : ill. (some col.), plates (col.) ; 30 cm.
Title page, contents and abstract only. The complete thesis in print form is available from the University Library.
Focusses on the ecophysiology of Ecklonia radiata and quantifies its carbon contribution to further elucidate E. radiata's role in the nearshore marine environment. The photosynthesis-irradiance response of E. radiata was investigated in situ throughout the year and across the dept profile. A clear seasonal change in photokinetic parameters was detected and provided strong evidence of a seasonal acclimation response. Changes in photokinetic parameters across the depth profile were less pronounced and a significant decline in productivity occurred at deeper depths. The acclimation state of E radiata did alter across the depth profile.
Thesis (Ph.D.)--University of Adelaide, Dept. of Environmental Biology, 2002
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Fairhead, Victoria A. "Ecophysiology and production ecology of the kelp ecklonia radiata (C.Agardh) J.Agardh, at West Island, South Australia / Victoria Anne Fairhead." Thesis, 2002. http://hdl.handle.net/2440/21777.
Full textAbstract:
"November 2001"Bibliography: leaves 132-156.
xii, 166 leaves : ill. (some col.), plates (col.) ; 30 cm.
Focusses on the ecophysiology of Ecklonia radiata and quantifies its carbon contribution to further elucidate E. radiata's role in the nearshore marine environment. The photosynthesis-irradiance response of E. radiata was investigated in situ throughout the year and across the dept profile. A clear seasonal change in photokinetic parameters was detected and provided strong evidence of a seasonal acclimation response. Changes in photokinetic parameters across the depth profile were less pronounced and a significant decline in productivity occurred at deeper depths. The acclimation state of E radiata did alter across the depth profile.
Thesis (Ph.D.)--University of Adelaide, Dept. of Environmental Biology, 2002
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Newell, Jennifer Elizabeth. "Tahitians, Europeans and ecological exchange 1767-1827." Phd thesis, 2005. http://hdl.handle.net/1885/149769.
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Prebble, Matthew. "Islands, floras and history : an environmental history of plant introduction and extinction on the Austral Islands, French Polynesia." Phd thesis, 2006. http://hdl.handle.net/1885/109807.
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Jared Diamond has recently suggested that the unique societal and floral attributes of Easter Island
(Rapa Nui) and Tikopia may be a result of their geographical and historical isolation. In what
Diamond proposes as the 'orthodox' understanding of these islands, I suggest that the discovery of
material remains of the extinct Easter lsland palm cf Paschalococcus disperta and the introduced
Tikopian tree crop Canarium harveyi can be seen to represent fundamentally different social
strategies for alleviating problems of isolation. In developing a synthesis of evidence for plant
introductions and extinctions from the Austral Islands in French Polynesia, I question whether the
botanical discoveries on Easter Island and Tikopia allow for the establishment of a robust model of
environmental transformation in the Pacific Islands following human colonization.
Despite the totality of explanation proposed in this orthodox picture of Pacific Islands, defining
the course of events that led to the establishment and proliferation of human trans-located plant
species or the extinction of indigenous plant species is by no means straightforward. There are
geographical and historical biases that for many plant species render the relationship between human
colonization and the geographic distribution of plants untenable particularly in relation to the
downstream effects of human-generated disturbances. Just as some introduced taxa may become
naturalized on islands once released, some indigenous taxa may decline or face extinction on their
own accord in response to other environmental factors independently of human activity.
The relationship between human colonization and phytogeographic patterning on the Austral
Islands is assessed through the examination of multiple lines of botanical evidence. These include
historical documentation from early explorer or missionary accounts, oral traditions, sub-fossil
archaeological and palaeobotanical remains and the assessment of molecular phylogeographic
patterning. Each line of evidence has a different chronological representation and each is preserved
differently in different geographical settings. ln synthesizing this information I follow an historical
method proposed by Femand Braudel which first establishes the duration of each line of evidence
then explores the overlap between their chronological and geographical representations. It is at these
points of overlap that a more robust history is revealed.
By following this historical structure I argue that much of the Diamond's 'orthodox' model has
a weak foundation. Material evidence from the Austral lslands suggests that the cases of Easter Island
and Tikopia are not unique and that the chronological interpretation of plant extinction or
introduction events may be distorted. Palm trees (Arecaceae: Iguanurinae type) have also become
extinct on the Austral Islands and palm forest decline appears to correspond to the establishment and
expansion of introduced tuber and tree crops. The chronology of these extinctions and introductions established from the examination of microfossil remains from sedimentary deposits on Rapa and
Rimatara are generally synchronous. I suggest that changes in land-use following European contact
directed the final extinction of some plant species including the Iguanurinae type palm on Rimatara.
With the resolution of chronological evidence for the Austral Islands, particularly from
palaeobotanical evidence, I suggest that most plant extinctions either occurred at the onset of human
colonization or were delayed until after European contact.
Book chapters on the topic "Ecology Victoria French Island"
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"Victoria: Westernport Bay, with French Island and Phillip Island." In Encyclopedia of the World's Coastal Landforms, 1359–68. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-1-4020-8639-7_238.
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"“A Land where Hunger is in Gold and Famine is in Opulence”: Plantation Slavery, Island Ecology, and the Fear of Famine in the French Caribbean." In Fear and the Shaping of Early American Societies, 243–64. BRILL, 2016. http://dx.doi.org/10.1163/9789004314740_013.
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