Academic literature on the topic 'River surveys Victoria'
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Journal articles on the topic "River surveys Victoria"
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Metcalfe, Jenni, and Michelle Riedlinger. "Identifying and Testing Engagement and Public Literacy Indicators for River Health." Science, Technology and Society 14, no. 2 (July 2009): 241–67. http://dx.doi.org/10.1177/097172180901400203.
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Natural resource management (NRM) organisations in Australia are increasingly recognising the need for complement studies of biophysical condition of the environment with studies of social condition, such as values, understanding, and participation related to the environment. Relevant and reliable social indicators that can be scaled and measured on a regular basis are essential to meet this need. In this study, we identified four indicators to test the social condition of the public in the State of Victoria in Australia with regard to river health. These indicators were river use, river knowledge and literacy, values and aspirations, and river health behaviours. We tested the four indicators through telephone and web-based surveys with over 1000 people in three areas of Victoria. We analysed the survey data statistically and gathered baseline data on the social condition of river health in the three regions. We made recommendations for how this data could be interpreted and used in community engagement and science communication programmes about river health. We also examined the limitations of the methodology and recommended modifications to the survey design and application for an anticipated roll-out of the survey across the entire State of Victoria. The Victorian Department of Sustainability and Environment (DSE) will use this survey instrument to test social indicators on a regular basis.
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Letnic, Mike, and Greg Connors. "Changes in the distribution and abundance of saltwater crocodiles (Crocodylus porosus) in the upstream, freshwater reaches of rivers in the Northern Territory, Australia." Wildlife Research 33, no. 7 (2006): 529. http://dx.doi.org/10.1071/wr05090.
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Since they were declared a protected species in 1971, populations of saltwater crocodiles (Crocodylus porosus) have increased in the tidal rivers, freshwater swamps and marine waters of the Northern Territory. The recovery of the C. porosus population has been accompanied by an increase in the incidence of ‘problem crocodiles’ that represent a threat to people in freshwater and marine habitats. Despite the implications for human safety, little is known about C. porosus populations in the freshwater reaches of rivers, well upstream of tidal influence. In this study, we examined the density and body-size structure of C. porosus populations in three freshwater rivers using a combination of data from spotlight and helicopter surveys conducted between the 1980s and 2005, and the inland extent of C. porosus using distribution records in the Northern Territory. Since the 1980s, the density of C. porosus in upstream, freshwater reaches of the Daly and Roper rivers has increased, as has the inland extent of C. porosus on the Daly River. Although C. porosus was not detected in spotlight surveys of the Victoria River, helicopter survey and anecdotal records indicate that C. porosus was present after 1989. In all, 52.1% of the crocodiles sighted in spotlight surveys were 2.1–3.4 m long. Distribution records show that C. porosus occurs up to 235 km inland and at elevations of up to 126 m above sea level. The potential distribution of C. porosus is likely to be similar to that of barramundi (Lates calcarifer), a readily identifiable diadromous fish that must spawn in estuarine waters and occurs at elevations of up to 178 m above sea level. Because the density and inland extent of C. porosus in freshwater rivers is likely to increase, it is recommended that: (1) programs communicating crocodile awareness use the linkage between the presence of barramundi and the potential presence of C. porosus; (2) that crocodile warning signs be erected in upstream areas within the potential range of C. porosus; (3) that research be conducted on developing techniques to detect and exclude C. porosus from swimming areas; and (4) that widespread systematic surveys be undertaken to document the inland extent of C. porosus.
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De Mora, S. J., R. F. Whitehead, and M. Gregory. "Aqueous geochemistry of major constituents in the Alph River and tributaries in Walcott Bay, Victoria Land, Antarctica." Antarctic Science 3, no. 1 (March 1991): 73–86. http://dx.doi.org/10.1017/s0954102091000111.
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Two geochemical surveys of the major constituents of the Alph River, situated in Walcott Bay, Victoria Land, were undertaken in the austral summer of 1987–88. At the same time, tributaries and the runoff from various glaciers were investigated. The Alph River has an average total dissolved solids (TDS) concentration of 63.5 mgl−1, approximately half that of average world river water. The chemical composition is dominated by Na+ and HCO−3. Glacial melt waters have very low TDS but chemical weathering over the course of a few kilometres causes solute concentrations in the tributaries to exceed those of the Alph River. The composition of the streams is variable, but often Ca2+ is the principal cation. Enrichment factor and mass balance calculations indicate that the salts in the Alph River and its tributaries have a substantial non-marine component. Chemical weathering of calcite, mirabilite, gypsum and halite contribute solutes to the aquatic system. A “Gibbs Plot” [TDS versus Na:(Na+Ca) weight ratio] indicates that water samples from direct glacial runoff fall outside the world water envelope. They have low solute levels but enhanced Ca2+ concentrations, resulting from the aeolian deposition and subsequent dissolution of calcitic material.
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Behangana, Mathias, Wilber Lukwago, Daniele Dendi, Luca Luiselli, and David Ochanda. "Population surveys of Nile crocodiles (Crocodylus niloticus) in the Murchison Falls National Park, Victoria Nile, Uganda." European Journal of Ecology 3, no. 2 (December 20, 2017): 67–76. http://dx.doi.org/10.1515/eje-2017-0015.
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Abstract1. A 12-month-long survey (April 2013 to March 2014) for Nile crocodiles (Crocodylus niloticus) was conducted along a section of the Victoria Nile/Ramsar site of Murchison Falls National Park, in order to update the historic information on crocodile populations in the area, locating nesting areas, determining seasonality patterns and habitat use, and assess the current abundance and the population size trends since the 1960s. The methods employed included visual encounter surveys, transect counts and opportunistic methods, by using boats. 2. In general, there were diurnal and seasonal fluctuations in the number of crocodile sightings. The crocodile sightings peaked between the months of June and August, with the highest mean number of sightings encountered on any single day being 67 (in July 2013), and the second peak was between January and March with the highest mean of 118 recorded in January 2014. The second peak also coincided with the crocodile breeding season. This clearly shows that the distribution of the sub-population sampled followed a climatic regime. 3. Crocodiles were observed most frequently in water (37%). Grassy banks, islands, river mouths and sandy banks constituted about 47% of the habitats utilised by the crocodile population. Although basking was the most frequent type of activity performed by crocodiles (50%) over the entire survey period, their key activities varied significantly from month to month. Nesting was very visible during the last quarter of the year and the first quarter of the New Year. 4. There was a clear decline of the abundance of crocodiles in this population between 1960s and nowadays. This declining trend was obvious also taking into account the various survey methodologies employed over the decades.
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Ferguson, Michael A. D. "Status and trends of Rangifer tarandus and Ovibos moschatus populations in Canada." Rangifer 12, no. 3 (October 1, 1992): 127. http://dx.doi.org/10.7557/2.12.3.1017.
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We identified 97 Rangifer tarandus and 17 Ovibos moschatus populations in Canada. In July 1991, the Canadian populations totalled 1.9 to 2.6 million caribou, 13 600 reindeer and 108 600 muskoxen. Seven barren-ground caribou populations contributed about 75% to Canada's total number of caribou. Most population trends of these barren-ground caribou had shiftet from increasing in the early 1980s to stable or decreasing in the late 1980s. The George River herd of Quebec and Labrador has been decreasing since 1987, but remains the largest Canadian caribou population. The ecological factors driving barren-ground caribou population dynamics are not well understood. Arctic islands caribou are about 17% of all Canadian caribou. Over 60% of Arctic islands caribou occurred on Baffin Island. Most Arctic islands populations were decreasing with the exceptions of Southampton, Bathurst, Victoria and Baffin islands. Movements within and between islands are not well understood, and probably limit the usefulness of small surveys for indicating long-term trends of Arctic islands caribou populations. Woodland caribou form about 7% of all Canadian caribou, with about 40% of these occurring on the island of Newfoundland. Most Canadian woodland caribou have not been well studied or censused. In many areas, they were faced with an increasing rate of habitat loss. Exceptions included: some eastern Yukon populations and most Newfoundland populations which were increasing. Over 70% of the Canadian muskox population occurred on Banks and Victoria islands. Almost all muskox populations were increasing, especially those on Banks, Victoria, Melville and Bathurst islands. Muskoxen on the mainland Northwest Territories are re-colonizing southern portions of their historical distribution.
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Di Leo, A., and M. Tallini. "Irrigation, groundwater exploitation and cult of water in the rural settlements of Sabina, Central Italy, in Roman times." Water Supply 7, no. 1 (March 1, 2007): 191–99. http://dx.doi.org/10.2166/ws.2007.022.
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Archaeological surveys conducted in Sabina, about 50 km away from Rome, intended to reconstruct the ancient agricultural and pastoral landscape. They identified interesting remains of roman small family farms at Montenero Sabino and Mompeo (province of Rieti), villages located near Via Salaria (the “salt way”) and the Farfa stream, a tributary of the Tiber River, which in ancient times, both were the main trade routes of central Italy, linking Rome to the Apennines and to the Adriatic coast. There a network of underground channels and tanks, fictile water pipes and pools, at times connected to one another, was found. Many of them are still used today, given the low population growth and the lack of modern industrial development of this area and to its isolation, in spite of its proximity to Rome. Moreover the study area holds a votive stone dedicated to the Sabine-Roman goddess of water Vacuna, a multiform Sabine and Central-Italic goddess with many characteristics and functions, known also as Minerva-Bellona-Victoria, Feronia, Caerere, or as Angerona-Angitia. It was related to an agricultural-pastoral shrine for the cult of water whose anthropological relevance still survives in yearly livestock fairs and in the local worship of the Holy Mary of parturients.
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Kambouris, Peter J., Rodney P. Kavanagh, and Kelly A. Rowley. "Distribution, habitat preferences and management of the yellow-bellied glider, Petaurus australis, on the Bago Plateau, New South Wales: a reassessment of the population and its status." Wildlife Research 40, no. 7 (2013): 599. http://dx.doi.org/10.1071/wr13021.
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Context A population of yellow-bellied glider on the Bago Plateau, near Tumbarumba, was listed as an Endangered Population in 2008 under the New South Wales (NSW) Threatened Species Conservation Act 1995. The listing was based on limited data that suggested that the population is geographically and genetically distinct and its habitat in decline. Aims To review the validity of the endangered-population listing following the collection of new data on its distribution, habitat preferences and responses to logging. Methods Surveys for the yellow-bellied glider were conducted at a subset of sites established in 1995 on the Bago Plateau as well as across parts of the neighbouring Kosciuszko National Park, which had not been surveyed previously. The distribution of suitable habitat throughout these areas was evaluated. Key results The yellow-bellied glider was recorded at 29% of 48 sites resurveyed in 2010, 54% of which were previously occupied in 1995. Most changes in glider occupancy occurred at sites that had not been logged during the intervening period. The gliders preferred forest types dominated by montane gums (Eucalyptus dalrympleana, E. viminalis, E. camphora, E. pauciflora and E. stellulata) and used forest types of montane gums mixed with E. robertsonii or E. delegatensis in proportion to their availability across the landscape. The gliders were not observed to use monospecific stands of E. delegatensis. The yellow-bellied glider was also recorded frequently in Kosciuszko National Park. E. dalrympleana was consistently represented in the distribution of this species across the NSW Snowy Mountains. Conclusions Yellow-bellied glider site occupancy was not related to timber harvesting. Its habitat was not restricted by elevation or confined within Bago and Maragle State Forests by the Tumut River Gorge, Blowering and Talbingo Dams, as previously thought. We estimated that there is a large population of the gliders occupying up to 440 000 ha of contiguous habitat across the broader Snowy Mountains region of NSW, extending also into ACT and Victoria. Implications The listing of the Bago Plateau portion of this population as an endangered population appears inconsistent with relevant listing criteria and requires review.
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WANYONYI, STELLAH NEKESA, EVANS MUNGAI MWANGI, and NATHAN GICHUKI. "Effect of habitat disturbance on distribution and abundance of Papyrus endemic birds in Sio Port Swamp, Western Kenya." Bonorowo Wetlands 8, no. 2 (December 1, 2018): 51–62. http://dx.doi.org/10.13057/bonorowo/w080201.
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Wanyonyi SN, Mwangi EM, Gichuki N. 2018. Effect of habitat disturbance on distribution and abundance of Papyrus endemic birds in Sio Port Swamp, Western Kenya. Bonorowo Wetlands 2: 49-60. Papyrus (Cyperus papyrus) swamps are found patchily around the shores of Lake Victoria mainly along river inflows. The objective of this study was to investigate the distinct forms of habitat disturbance and their implications on the distribution and abundance of papyrus endemic birds. Data on bird counts, habitat quality, and types of disturbance were collected for six months, from October 2013 to March 2014. Total bird counts were established using Timed Species Count (TSC) and playback call technique at every fixed point. The researcher waited for 1 minute, calls of the study species were played to elicit a response of the secretive papyrus endemic birds. The number of each bird's species seen or heard within a radius of 25 meters was recorded for the next 9 minutes before transferring to the next point count. Habitat quality such as height, density, and level of maturity was determined in 1 m2 plots along transverse transects. Opportunistic observations were made to establish forms of disturbance present during vegetation and bird surveys. Papyrus endemic birds were highly distributed in sites with pure papyrus (55.58%) than in places with mixed plants (44.42%). The abundance of three endemic birds, White-winged Swamp-warbler, Papyrus Gonolek, and Northern Brown-throated Weaver, was significantly different in mixed and pure papyrus sites. However, the abundance of Greater Swamp-warbler was not significantly different in mixed and pure papyrus sites in Sio Port Swamp during the study period. Forms of habitat disturbance established were vegetation clearing and invasion by terrestrial and aquatic plants. As many as 76.47% of papyrus vegetation were young and regenerated (0-2 m high), 19.65% were immature papyruses (2-4 m) whereas 3.88% were tall mature papyruses (4-6 m high). The abundance of papyrus endemic birds was positively and significantly correlated with the density of vegetation in height ranging from 4-6 m. Thus, any change in papyrus density changed the abundance of papyrus endemic birds. Advance management of papyrus clearing is necessary for the long-term conservation of biodiversity.
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Hughes, JMR, and B. James. "A hydrological regionalization of streams in Victoria, Australia, with implications for stream Ecology." Marine and Freshwater Research 40, no. 3 (1989): 303. http://dx.doi.org/10.1071/mf9890303.
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Annual, monthly, low and peak flow data were used to classify and ordinate 138 stream gauges in Victoria. Sixteen hydrological variables were used and low-flow and entire-flow regionalizations were derived. The low-flow regionalization was spatially indistinct and therefore unusable, but the entire-flow regionalization produced five distinctive and spatially significant regions. Least-squares relationships were calculated between mean annual runoff, catchment area and coefficient of variation of annual flows, and the 16 variables. Rivers in the dry western districts of Victoria exhibit high variability of annual, monthly and peak flows, and low specific low flows. The converse is true for rivers in the western highlands of Victoria. Stream regionalizations are a useful tool for stream ecologists, and may be used for generating hypotheses, for detecting representative rivers and for producing baseline stream surveys.
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Shiner, Justin. "Analysis of stone artefact assemblages from a recent survey of the Howqua River, Victoria." Australian Archaeology 54, no. 1 (January 2002): 13–21. http://dx.doi.org/10.1080/03122417.2002.11681736.
Full textDissertations / Theses on the topic "River surveys Victoria"
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Koehn, John Desmond. "The ecology and conservation management of Murray Cod Macullochella peelii peelii." 2006. http://repository.unimelb.edu.au/10187/2864.
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Murray cod Maccullochella peelii peelii is an iconic freshwater angling species that has suffered declines in abundance and is now listed as a nationally vulnerable species. Despite recognition of the need for biological knowledge to provide future management directions, little is known of its ecology. This thesis examines that ecology to provide new knowledge and recommendations for improved conservation management. (For complete abstract open document)
Book chapters on the topic "River surveys Victoria"
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Lewis, Virginia M. "Fluid Identities." In Myth, Locality, and Identity in Pindar's Sicilian Odes, 179–223. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780190910310.003.0005.
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Chapter 4 argues that Pindar activates the River Akragas as a civic symbol in three of his five odes for victors from Akragas. Along with Syracuse, Akragas was one of the two most powerful Sicilian cities in the fifth century, and the influential Emmenid rulers celebrated their athletic successes by commissioning four odes by Pindar. A fifth ode for Akragas is unique as the only example of an ode in celebration of a victory in a musical competition that survives from classical Greece. A preliminary survey of local references in these odes suggests that the River Akragas became a recurring symbol that echoed the crab on Akragantine coinage of the period. Already in the earliest of the Akragantine odes, Pythian 12, the poet represents Akragas as a morphing figure that shifts from city to nymph to river, emphasizing the equivalency drawn between the three and the importance of the river as a symbol of civic identity. Later, in Olympians 2 and 3 (in celebration of Theron’s chariot victory of 476), Pindar draws a spatial analogy between the Akragantines and the inhabitants of the Isle of the Blessed and the mythical Hyperboreans, respectively, that depends on their link to the river. Through close reading and analysis of Olympian 2, this chapter suggests that the River Akragas becomes a locus of Akragantine civic identity in this poetry.
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Harding, D. W. "Recovery, Recording, and Publication." In Rewriting History, 36–64. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198817734.003.0003.
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Was Pitt-Rivers really the ‘father of field archaeology’? He certainly contributed to artefact seriation and was aware of the importance of everyday artefacts for archaeological reconstruction, but, though meticulous in recording artefacts, he was not noted for recognizing structural features and he did not excavate stratigraphically. Field survey had a long history in Britain before the establishment of the Royal Commissions at the beginning of the twentieth century, with air photography subsequently developing out of military survey in the First World War. The importance of stratigraphy, association, and context was promoted by Sir Mortimer Wheeler from the 1930s, but scientific techniques were not widely applied until after the Second World War, with the advent of radiocarbon dating, geophysical survey, and a developing range of analytical techniques. Environmental archaeology as an integral part of the discipline was a relatively late development, as were osteological studies, notwithstanding the interest in craniology since Victorian times. ‘Rescue’ archaeology and development-funded archaeology has not only transformed the scale and quantity of finds, but has transformed qualitatively understanding of settlement patterns and distributions.
Reports on the topic "River surveys Victoria"
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Dilabio, R. N. W., and R. D. Knight. Kimberlitic indicator minerals in the Geological Survey of Canada's archived till samples: results of analysis of samples from Victoria Island and the Hay River area, Northwest Territories. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1997. http://dx.doi.org/10.4095/209177.
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