Bibliografías temáticas / Perth Region

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Literatura académica sobre el tema "Perth Region"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 30 de enero de 2023

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Artículos de revistas sobre el tema "Perth Region"

Cowan, R. S., N. G. Marchant, J. R. Wheeler, B. L. Rye, E. M. Bennett, N. S. Lander y T. D. Macfarlane. "Flora of the Perth Region". Taxon 37, n.º 1 (febrero de 1988): 203. http://dx.doi.org/10.2307/1220966.

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Adams, Tony. "PERTH METROPOLITAN REGION BIKE PLAN". Australian Planner 24, n.º 2 (junio de 1986): 28. http://dx.doi.org/10.1080/07293682.1986.9657301.

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Bowdler, Sandra, Lynda Strawbridge y Madge Schwede. "Archaeological Mitigation In The Perth Metropolitan Region". Australian Archaeology 32, n.º 1 (enero de 1991): 21–25. http://dx.doi.org/10.1080/03122417.1991.11681407.

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Rye, P. J. "Modelling photochemical smog in the Perth region". Mathematical and Computer Modelling 21, n.º 9 (mayo de 1995): 111–17. http://dx.doi.org/10.1016/0895-7177(95)00059-b.

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Hurley, P. J. y P. C. Manins. "Meteorological Modeling on High-Ozone Days in Perth, Western Australia". Journal of Applied Meteorology 34, n.º 7 (1 de julio de 1995): 1643–52. http://dx.doi.org/10.1175/1520-0450-34.7.1643.

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Abstract The West Australian capital city of Perth is located on a coastal plain between the sea to the west and an escarpment rising to the east. It is isolated from all other cities or sources of pollution. In this study, the meteorological conditions leading to high ozone levels have been classified according to the dominant weather patterns using both synoptic charts and air monitoring data. The data revealed that practically all high-ozone days were associated with recirculation of ozone or its precursors. Meteorological modeling was then performed for the generic conditions leading to high ozone in the Perth region. The modeling predicted that recirculation of surface air over the Perth region was common. Both same-day and next-day recirculation of surface air are features of the model predictions and are conducive to high ozone levels. The modeling predicts day-by-day buildup of smog to be a favored occurrence under these synoptic conditions. Other interesting meteorological features seen in Perth observations on high-ozone days were also predicted by the modeling, including stalling sea breezes under some conditions, hydraulic jump effects over the escarpment, and mesoscale enhancement of the west coast trough.

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Chessman, Bruce C., Kerry M. Trayler y Jennifer A. Davis. "Family- and species-level biotic indices for macroinvertebrates of wetlands on the Swan Coastal Plain, Western Australia". Marine and Freshwater Research 53, n.º 5 (2002): 919. http://dx.doi.org/10.1071/mf00079.

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SWAMPS (Swan Wetlands Aquatic Macroinvertebrate Pollution Sensitivity) was developed as a biotic index for wetlands near Perth, Western Australia. Numerical grades between 1 and 100 were assigned to wetland macroinvertebrate taxa, generally at the family and species levels, to reflect the sensitivities of these taxa to anthropogenic disturbance, primarily nutrient enrichment. Index scores for individual wetlands were calculated as abundance-weighted or unweighted means of the grades of all taxa present in standard samples. Scores calculated at both the family and species levels showed a strong correlation with independent measures of cultural eutrophication and other anthropogenic disturbances, but such correlations were generally higher for the species-level index. The species index also discriminated more between individual wetlands. SWAMPS should be useful in routine and rapid assessment and monitoring of wetland condition in the Perth region and could be easily adapted to other regions and continents.

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Allinson, William Guy, Richard Edward Dunsmore, Peter Ross Neal y Minh T. Ho. "The Cost of Carbon Capture and Storage in the Perth Region". SPE Projects, Facilities & Construction 2, n.º 03 (1 de septiembre de 2007): 1–6. http://dx.doi.org/10.2118/101122-pa.

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Pearce, Robert L. y David I. Grove. "Tick infestation in soldiers who were bivouacked in the Perth region". Medical Journal of Australia 146, n.º 5 (marzo de 1987): 238–40. http://dx.doi.org/10.5694/j.1326-5377.1987.tb120228.x.

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Curtis, Carey. "Network City: Retrofitting the Perth Metropolitan Region to Facilitate Sustainable Travel". Urban Policy and Research 24, n.º 2 (junio de 2006): 159–80. http://dx.doi.org/10.1080/08111140600703691.

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Hillman, Alison y R. C. Andrew Thompson. "Interactions between humans and urban-adapted marsupials on private properties in the greater Perth region". Australian Mammalogy 38, n.º 2 (2016): 253. http://dx.doi.org/10.1071/am15045.

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This study documents a range of interactions between humans and quenda (Isoodon obesulus) and brushtail possums (Trichosurus vulpecula) in urbanised Perth, Australia. These interactions are of veterinary public health significance. Findings suggest that public education is important to safeguard the health of both the marsupials and humans involved in such interactions.

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Tesis sobre el tema "Perth Region"

Fisher, Judith L. "Fundamental changes to ecosystem properties and processes linked to plant invasion and fire frequency in a biodiverse woodland". University of Western Australia. School of Plant Biology, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0109.

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[Truncated abstract] Mediterranean southwest Australia, a global biodiversity hotspot, has nutrient deficient soils, exacting climatic conditions and is species rich with 7380 native vascular plant species, of which 49% are endemic. The region is expected to experience one of the world's highest degrees of biodiversity loss and change in the coming decades, with introduced species presenting a major threat. Limited knowledge is available on the mechanisms of ecosystem change associated with invasion and fire in this biodiversity hotspot region. Banksia woodland, an iconic complex species-rich natural ecosystem is one of the major vegetation types of the coastal sandplain, extending from 15 to 90 km inland and 400 kms along the west coast. The following hypothesis was tested to explore the ecological impacts of invasion: Is invasion of Banksia woodland by the introduced species Ehrharta calycina and Pelargonium capitatum accompanied by an alteration in ecosystem properties and processes, whereby the degree of change is related to fire frequency and abundance of introduced species? Different vegetation conditions, i.e. Good Condition (GC), Medium Condition (MC), Poor Condition invaded by Ehrharta calycina (PCe) and Poor Condition invaded by Pelargonium capitatum (PCp) were utilized for field assessments. ... In the soil seed bank, species numbers and germinant density decreased significantly for native and seeder (fire sensitive) species between GC sites and invaded sites. Surprisingly 52% of germinants at GC sites were from introduced species, with much of the introduced soil seed bank being persistent. Native species were dominated by perennial shrubs, herbs and sedges, while introduced species were dominated by perennial and annual grasses and herbs. Invasion by introduced species, associated with frequency of fire, altered the ecosystem, thus disadvantaging native species and improving conditions for even greater invasion within the Banksia woodland. Significantly higher soil phosphorus P (total) and P (HCO3) were found at PCe and PCp sites compared to GC sites. Leaf nutrient concentrations of phosphorus were significantly higher, and potassium and copper significantly lower in PCe and PCp sites, with introduced species having significantly greater concentrations than native species (except Manganese). This study demonstrated the key role of phosphorus in the Banksia woodland, in contrast to other research which identified nitrogen as the major nutrient affected by invasion. Higher levels of soil and leaf phosphorus, loss of species diversity and function, changes in fire ecology and canopy cover and a limited native soil seed bank make restoration of a structural and functional Banksia woodland from the soil seed bank alone unlikely. Without management intervention, continuing future fire is likely to result in a transition of vegetation states from GC to MC and MC to PC. The knowledge gained from this study provides a better ecological understanding of the invasive process. This enhanced understanding will enable the development of adaptive management strategies to improve conservation practices within a biodiversity hotspot and reduce the impact of the key threatening process of invasion.

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Hillman, Alison. "Urbanisation and small marsupials in the greater Perth region, Western Australia". Thesis, Hillman, Alison (2016) Urbanisation and small marsupials in the greater Perth region, Western Australia. PhD thesis, Murdoch University, 2016. https://researchrepository.murdoch.edu.au/id/eprint/33177/.

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Background Quenda (Isoodon obesulus) and brushtail possums (Trichosurus vulpecula) remain in many areas of Perth, Western Australia, despite urbanisation. This thesis investigated the impacts of urbanisation on the parasitic infections, morphometrics and reproductive fitness of these marsupials. Parasite screening particularly investigated the presence of parasites that quenda and possums may be acquiring from humans and pets in urbanised environments. Methods This cross sectional study targeted free-ranging quenda and brushtail possums in Perth. Trapping was undertaken on 29 bushland sites and 35 urbanised sites. Trapped marsupials were sampled for gastrointestinal and macroscopic ecto- parasites and Toxoplasma gondii antibodies, and morphometrics were measured. Statistical analyses included linear and logistic regression, Kulldorff’s spatial scan statistic and analysis of similarities in parasite communities. Results 287 quenda and 33 brushtail possums were sampled across 55 sites. Parasitic infections were common in Perth quenda, and less so in brushtail possums. Twelve parasite taxa were identified infecting these host species for the first time. In quenda, some differences in parasite prevalences, odds of infection, intensities of infection, and parasite communities, were observed in quenda trapped in urbanised environments compared to bushland. In quenda, Giardia spp. infection was common, and typically the non-zoonotic G. peramelis. Analyses suggest that the primary influence on the distribution of Giardia spp. infection in quenda is population density. Quenda trapped in urbanised environments were heavier on average than quenda trapped in bushland, in the absence of convincing evidence of a difference in skeletal morphometrics. Bushland adult female quenda had increased odds of having an active pouch than those in urbanised environments. Conclusions Quenda and brushtail possums in Perth are not commonly infected with gastrointestinal and macroscopic ecto- parasites of humans and domestic animal origin. Quenda in urbanised environments have a tendency towards obesity. Urbanised environments may negatively impact fecundity of female quenda.

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Gerlach, Mark. "The population structure and dynamics of Macrozamia riedlei within the Perth region". Thesis, Gerlach, Mark (2012) The population structure and dynamics of Macrozamia riedlei within the Perth region. Honours thesis, Murdoch University, 2012. https://researchrepository.murdoch.edu.au/id/eprint/12591/.

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Macrozamia riedlei is a long lived, large seeded member of the cycad family, common to the Jarrah forest and Banksia woodlands within the Perth region of Western Australia. Because of the large size of the seeds (up to 50mm), it is believed that large bodied herbivores are required to act as dispersal agents. Currently, the Emu (Dromaius novaehollandiae) is considered to be the primary dispersal agent for M. riedlei. Due to anthropogenic activities, much of the habitat of M.riedlei is becoming fragmented primarily through agricultural and residential land clearing. This leads to the potential restriction of long distance dispersal of seed, required for healthy gene flow and the ability for range expansion in the face of an uncertain climatic future. The aims of this study were to investigate the current population structure of M. riedlei at three locations within the Perth region and to identify dispersal agents and the distance they can disperse seeds. The sites chosen were Avon Valley, Sawyers Valley and Kings Park; these three sites were chosen since they present a gradient in emu population density, from abundant at Avon Valley to absent for a century at Kings Park. To ascertain how these three populations of M. riedlei were currently structured, all plants in replicate 50x50m plots were recorded at each site and the data used to analyse the demographic and spatial structure of each population. Because of the gradient in emu population density, it was hypothesised that the spatial and demographic structure would differ at each site, due to the availability of emus to disperse the seeds of M. riedlei. The three study sites were shown to be very similar in population structure despite the difference in emu numbers. It was also found that the Australia Raven (Corvis coronoides) was capable of dispersing the seeds of M. riedlei over distances of up to 390m, indicating that ravens are able to act as suitable dispersers of M.riedlei seeds and in the absence of emus maybe considered as a key dispersal agent.

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Cohen, Lynne. "Attitudes of nurses to palliative care in nursing homes in the Perth metropolitan region". Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 1995. https://ro.ecu.edu.au/theses/1179.

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Zanna and Rempel (1988) have proposed that attitudes are a summary evaluation of an attitude object based on three classes of information, namely: cognitive information, affective information and behavioural information. This model has mainly been tested in the social groups and social policies area investigating two classes of information: cognitive and affective, and therefore there is a need for research to test the validity of this model in other areas. The present study applies the model to the area of palliative care in nursing homes. 76 directors of nursing, 76 clinical nurse specialists, and 76 nursing assistants working in nursing homes, completed a questionnaire in which they were asked (a) to make an evaluation of their overall attitude on a 7-point semantic differential scale, (b) to write down their own beliefs and (c) affects in response to the attitude object "palliative care in nursing homes" and then rate these beliefs and affects on a 7-point Likert Scale (d) to answer 18 factual knowledge questions about palliative care, and (e) to supply some demographic information. The results indicated that cognitive and affective information significantly and independently predicted the attitudes of nurses to palliative care in nursing homes.

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Shukla, Chirayu S. "Scenario modeling for prediction of contaminant transport in Perth unconfined aquifer". Thesis, Curtin University, 2008. http://hdl.handle.net/20.500.11937/2066.

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Rapid development and growth of industrialization has brought immense enrichments in living standards of humans, however, improper planned development also brings along several environmental problems such as pollution of environment and excessive consumption of natural resources. Among all the others, uncontrolled utilization of water poses a severe threat to the coming generations. Past decades have witnessed water shortage in various countries of the world. Although about 80% of the earth’s surface is covered with water, around 97.2% of water is salty making it inappropriate for general usage. Among the rest of the 2.8%, which is present as fresh water on surface, a large proportion of it has been found to be severely polluted. The increasing demand of fresh water both for industrial and domestic usage adds great demand on the available groundwater. Moreover, the severe pollution of fresh water on the surface adds more stress on the available groundwater. In Australia, approximately 20% of water supply is from groundwater and in the case of Western Australia groundwater provides two thirds of its water supply needs. Thus, it is important to manage groundwater sources in Western Australia to achieve the optimum water utilization and maintain the water table and it is also essential to decide on an appropriate water budget. Groundwater flow modelling is an effective tool to get appropriate water distribution and, to examine effects from pumping on water levels and direction of groundwater flow paths, thereby helping in its proper management and utilization. Apart from monitoring the flow and utilization, groundwater flow modeling is also vital to keep the track of pollutant in the groundwater. Increasing surface pollution and landfill sites tend to pollute the groundwater due to leaching.The above mentioned aspects formed the basis of the present research. A groundwater flow model was developed in Visual MODFLOW Premium to study the effect of three different types of soil in and around Perth region. This study also shows the hypothetical contaminated site model for benzene, toluene, ethylbenzene and xylene (BTEX) transport in Perth Superficial unconfined aquifer which includes three major aquifer sediments namely Bassendean Sand, Safety Bay Sand and Tamala Limestone. Among the four different contaminants it was observed that benzene is able to migrate quickly as compared to the other contaminants due to its smaller distribution coefficient.This study also explored the major soil parameters such as effect of sorption, effective porosity and hydraulic conductivity on contaminant plume configuration and contaminants concentration for the three types of aquifer sediments. A critical comparison of the behaviour of the three different types of soils was also conducted.Simulation results of sensitivity analysis have shown that sorption and hydraulic conductivity greatly affected the contaminant plume length and concentration of contaminants with much lesser effect shown by the effective porosity. The simulated results also showed that the movement of contaminant in Tamala Limestone is most rapid by comparing these three types of aquifer sediments together. Thus, it can be said that contaminated sites found in Tamala Limestone needs immediate remediation of contaminants to bring down the contaminants concentration in groundwater.In brief, the thesis explores the current groundwater scenario in and around Perth region. Based on the information a hypothetical scenario simulation has critically analyzed the various parameters affecting the water and contaminant flow for the various soil parameters. The study is considered as a building block for further research on developing a remediation technique for groundwater contaminant treatment.

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Shukla, Chirayu S. "Scenario modeling for prediction of contaminant transport in Perth unconfined aquifer". Curtin University of Technology, Department of Chemical Engineering, 2008. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=119756.

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Rapid development and growth of industrialization has brought immense enrichments in living standards of humans, however, improper planned development also brings along several environmental problems such as pollution of environment and excessive consumption of natural resources. Among all the others, uncontrolled utilization of water poses a severe threat to the coming generations. Past decades have witnessed water shortage in various countries of the world. Although about 80% of the earth’s surface is covered with water, around 97.2% of water is salty making it inappropriate for general usage. Among the rest of the 2.8%, which is present as fresh water on surface, a large proportion of it has been found to be severely polluted. The increasing demand of fresh water both for industrial and domestic usage adds great demand on the available groundwater. Moreover, the severe pollution of fresh water on the surface adds more stress on the available groundwater. In Australia, approximately 20% of water supply is from groundwater and in the case of Western Australia groundwater provides two thirds of its water supply needs. Thus, it is important to manage groundwater sources in Western Australia to achieve the optimum water utilization and maintain the water table and it is also essential to decide on an appropriate water budget. Groundwater flow modelling is an effective tool to get appropriate water distribution and, to examine effects from pumping on water levels and direction of groundwater flow paths, thereby helping in its proper management and utilization. Apart from monitoring the flow and utilization, groundwater flow modeling is also vital to keep the track of pollutant in the groundwater. Increasing surface pollution and landfill sites tend to pollute the groundwater due to leaching.
The above mentioned aspects formed the basis of the present research. A groundwater flow model was developed in Visual MODFLOW Premium to study the effect of three different types of soil in and around Perth region. This study also shows the hypothetical contaminated site model for benzene, toluene, ethylbenzene and xylene (BTEX) transport in Perth Superficial unconfined aquifer which includes three major aquifer sediments namely Bassendean Sand, Safety Bay Sand and Tamala Limestone. Among the four different contaminants it was observed that benzene is able to migrate quickly as compared to the other contaminants due to its smaller distribution coefficient.
This study also explored the major soil parameters such as effect of sorption, effective porosity and hydraulic conductivity on contaminant plume configuration and contaminants concentration for the three types of aquifer sediments. A critical comparison of the behaviour of the three different types of soils was also conducted.
Simulation results of sensitivity analysis have shown that sorption and hydraulic conductivity greatly affected the contaminant plume length and concentration of contaminants with much lesser effect shown by the effective porosity. The simulated results also showed that the movement of contaminant in Tamala Limestone is most rapid by comparing these three types of aquifer sediments together. Thus, it can be said that contaminated sites found in Tamala Limestone needs immediate remediation of contaminants to bring down the contaminants concentration in groundwater.
In brief, the thesis explores the current groundwater scenario in and around Perth region. Based on the information a hypothetical scenario simulation has critically analyzed the various parameters affecting the water and contaminant flow for the various soil parameters. The study is considered as a building block for further research on developing a remediation technique for groundwater contaminant treatment.

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Chen, Li. "Chinese diaspora and Western Australian nature (Perth region): A study of material engagement with the natural world in diasporic culture". Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2017. https://ro.ecu.edu.au/theses/2016.

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Based on an ethnographic study of the everyday practices of diasporic Chinese residents of Perth, this project focuses on the relationship between the ecologic environment and diasporic Chinese cultures in contemporary Western Australia. With the acceleration of globalization, studies in diaspora have increasingly absorbed geographic ideas. Research on the relationship between ecology and humankind has thrown new light on discussions of diaspora. However, there are few in-depth studies addressing the construction of diasporic place and space with an engagement of the material world. Considering the relative absence of the natural world as a serious subject in contemporary diaspora studies, the starting point of this project is to explore the interactive relationships between place, space, and diasporic people via their everyday experiences. What is the meaning of nature to Chinese people living in Australia? How do they communicate with the natural world in their daily life and what is the dynamic relationship between the people and the environment? In order to find the answers to these research questions, I adopt sensory ethnography, multispecies ethnography and sensory studies of food as the major approaches. As an insider ethnographer, I have examined diasporic multisensoriality through the ethnographic practices of interviews, observation, filed documentation (notes, photos, sound recordings), film documentation (video documentation of abalone harvesting in chapter 8) and self-reflective composition within a dynamic assemblage of human and nonhuman agentic beings. Sensory studies of food provide a way to understand the dynamic relations between the materials in diets and Chinese people on individual, ethnic and diasporic scales. Along with the theoretical themes of place, space, food, perception, memory and imagination, this research traverses diverse ethnographic disciplines as an academic practice. In this research, I present several typical cases of everyday spatial practices, abalone recreational harvesting, and Chinese vegetable gardening. As an ethnographic study, the project has involved more than twenty specific participants. In the last two years, I have interviewed groups, individuals and families, and joined them in wine tasting, cultural celebrations, abalone harvesting and vegetable gardening. In addition, due to my previous background in documentary filmmaking, I have made an illustrative film on the topic of abalone harvesting. Through the research on the cases, I found that there is an intimate, dialogical and reciprocal connection between the Chinese diaspora in Perth and the local physical environment. With the embodied engagement of the natural surroundings in their daily experiences, Chinese people living in Perth have gradually converted their perceptions of nature, which are also under the influence of traditional cultures. Acting as a space and an agent, the ecological environment has become familiar and domestic in the people’s diasporic experiences. Additionally, daily practices in the material surroundings have also transformed the people’s self-perceptions through their senses, reflections and attitudes toward the natural world. At the same time, the natural environment is impacted upon in myriad ways by the activities of diasporic Chinese.

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Stephens, Mescal. "Translation of national environmental management programs by the State of Western Australia, the Commonwealth government, and Perth Region NRM, a citizen group". Thesis, Curtin University, 2013. http://hdl.handle.net/20.500.11937/2631.

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Exploratory research examined how two governments and a citizen regional water catchment group implemented adaptive management in two Australian environmental management policies. The research question asked how theories of action between government and regional bodies influenced their relationships.The research question was first conceived as solely human, but another metaphysics (actor-network theory), enabled following the intertwining of study objects such as adaptive management, natural resource management, and policy, and a potential rethink of environmental reality.

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Hunter, Lindsay Diack. "The consumption of suburban housing: A study of dwellings in the Greater Perth Metropolitan Region and the district of Victoria Park between the two world wars". Thesis, Hunter, Lindsay Diack (1994) The consumption of suburban housing: A study of dwellings in the Greater Perth Metropolitan Region and the district of Victoria Park between the two world wars. PhD thesis, Murdoch University, 1994. https://researchrepository.murdoch.edu.au/id/eprint/50885/.

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The subject matter of this study is the consumption of suburban housing in Australian metropolitan regions between the two world wars. Specifically, it examines the distinctiveness of what was owned and occupied by whom in relation to later developments. Despite the period being of considerable significance in the growth of urban residential areas, it has not been well researched and this mainly involves two methodological problems. The first is the dearth of detailed data; the second is the lack of an established theoretical framework to guide investigations. Clearly the two elements are interrelated and therefore this study is as much about the development of a body of relevant information as it is about a conceptual interpretation of the findings. Turning to the first difficulty, the problem is not only the availability of data for the period per se, but also to relate it to the overall development of suburbs. This has entailed a reworking of census data and to that end, growth groups were devised and found to be more sensitive than zones to portray trends within However, metropolitan areas. this still does not overcome the data gap, particularly between 1921 and 1947, and consequently a detailed study has been made of Victoria Park from the rate books and sewerage plans. This covers the period from 1900 to 1955 and thereby provides a wider time frame to assess the distinctiveness of the period between the two world wars. With regard to the second difficulty, many studies appear to seek direct cause and effect linkages which have shaped urban phenomena. In this study, following the ideals of structuration, the view is taken that suburban housing is interconnected with the wider social structure in a mutually responsive relationship. Within this framework, the proposition is that there has been a shift in emphasis from houses as places for the sustenance of labour to locations for the consumption of a widening array of goods and services, including the house itself; and that this emerged strongly between the two world wars. While there are many facets to the study of suburban growth and development, two particular issues are used to direct this research. The first is the nature of occupancy, characters of dwellings and the relationships between them as indicators of changes in the consumption of housing. The second is the role of gender in these developments. The latter is considered to be significant because one of the apparent outcomes of suburbanization in the period was the segregation of males and females; and furthermore, while the suburbs were the domain of women, men appeared to control access to the means of consumption. From an analysis of the data developed at the macro scale of the Greater Perth Metropolitan Region, based on 26 Local Government Areas, and the micro level of Victoria Park using more than 6000 dwellings, the following findings have been made. Firstly, home ownership was a significant, although obscured, element of the suburbs which developed between the two world wars. Secondly, while the depression had a devastating and prolonged impact on home ownership in working class areas such as Victoria Park, in so doing, the proportion of outright to mortgage ownership increased. Thirdly, the period between the wars was part of a longer term trend for homes to have more rooms, often at the expense of verandahs, and fewer inhabitants. Fourthly, despite the fact that established suburbs had a majority of females, men still either owned or were nominated as the principal occupiers of the majority of residences. However, between the wars, not only did the level of female ownership increase significantly, but joint ownership also emerged as a the major form of occupancy. Fifthly, during the same period, there was a marginal propensity for sole males to own slightly larger, more expensive, brick homes while sole females owned slightly smaller, cheaper, weather-board residences. However, there is no clear distinction in terms of either age of dwellings or distance to the closest tram stop or railway station. Finally, although Perth has been characterised as a brick city, initial housing in the new suburbs, particularly in the period which encompassed the two world wars, were usually constructed of cheaper, more easily transported and constructed materials. The emphasis on brick homes was usually a feature of later consolidation phases of urban development. From these findings it is concluded that housing, as both a major item of consumption, and as the venue for increasing levels of household consumption, was well established in the suburbs which developed between the two world wars. As such, it is suggested that residential areas need to be seriously viewed as places of consumption and this consideration tied into any endeavour to plan future developments.

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Marshall, Carina Rynn Ecremen. "Evolutionary genetics of barramundi (Lates calcarifer) in the Australian region". Thesis, Marshall, Carina Rynn Ecremen (2005) Evolutionary genetics of barramundi (Lates calcarifer) in the Australian region. PhD thesis, Murdoch University, 2005. https://researchrepository.murdoch.edu.au/id/eprint/181/.

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Barramundi (Lates calcarifer) is a centropomid teleost with a wide distribution across the Indo Pacific. In Australia, barramundi are native to the tropical zone from Exmouth Gulf in Western Australia, across the northern part of the continent, to the Mary River in Queensland. Barramundi are protandrous hermaphrodites, and are euryhaline, with a catadromous life history. Barramundi are a valuable Australian resource, with important commercial and recreational fisheries and aquaculture production to the value of $11 million dollars per year. Recent declines in the availability of the fish in some rivers has led to an interest in the possibility of restocking rivers with barramundi from other areas. Determining the genetic structure of barramundi populations in Australia is important for understanding biogeographic history, and appropriate management practices for both aquaculture and recreational and commercial fishing. Previous studies have concentrated on the east coast of Australia, and have largely ignored the western populations. In this study, I obtained DNA data from barramundi populations across the Australian range of the species, as well as populations from Papua New Guinea and Indonesia. The aims of this study were to use the genetic data to determine: 1. if populations in Western Australia show genetic differences between geographic regions 2. if these populations show an ancestral split from populations in the east of Australia and 3. the ancestral origins of Australian barramundi. Previous studies of DNA data from barramundi have discovered an east/west split occurring at the Torres Strait that was assumed to be caused by the closing of the strait during lowered sea levels. However, these studies suffered from a bias in sampling area, concentrating either on the eastern half of the range of barramundi, or on the western tip of the range. Data from these studies were combined and reanalyzed. Two major clades were discovered, with considerable biogeographic structuring, but their geographic locations did not coincide with the reported vicariance event at the Torres Strait. Instead,historical divisions among freshwater drainage systems appeared to have driven the evolutionary history of barramundi in Australia. In order to investigate these historical divisions further, a 290 bp section of the mitochondrial DNA control region was sequenced in 284 barramundi from seven populations across the Australian geographic range of the species and from one population in Papua New Guinea and one population in Indonesia. Analyses of molecular variance within and among populations showed significant geographic structuring, based on biogeographical provinces and drainage divisions. Nested clade analyses indicated that these geographical associations were the result of restricted gene flow, range expansion, and past fragmentation events. I hypothesise that the Ord River area in the west of the continent was the ancestral source population for the rest of the species' range across Australia, with Indonesia being the most likely origin of this source. Populations of barramundi from the Pilbara region are genetically distinct and geographically isolated, with strong evidence of an ancestral divide along geographical barriers to dispersal. There is a strong association between Papua New Guinea and Australia, although further investigations using the cytochrome b region of mitochondrial DNA indicated a more ancestral divide between the two than is currently evident, which could reflect an ancient geographical divide between the two, or could be evidence of a secondary migration route to Australia. For a more detailed study of evolutionary processes acting on populations of barramundi in Western Australia, allelic diversity was examined at five microsatellite loci. All loci were polymorphic and genotypic frequencies conformed to Hardy-Weinberg expectations, with no significant linkage between loci evident in any population. Measures of within population diversity were significantly related to latitude, suggesting southerly migration from a northern source population. The Ord River was the most genetically diverse population, and the most likely ancestral migration source to the area, with diversity decreasing down the west coast. Although there were significant differences among populations, the nuclear microsatellite data do not indicate the same degree of genetic structuring as is evident in the mitochondrial data. This may be a consequence of rapid evolutionary change at microsatellite loci, with past separations or population differences masked by recombination and back mutation of the microsatellite alleles. However, the nature of nuclear and mitochondrial inheritance may also indicate life history differences between the sexes, where significant genetic contribution to gene flow by males and limited female gene flow may lead to preservation of maternally inherited population substructure. The principal findings from this study are: * There is no genetic evidence for an east/west division of barramundi populations in Australia, as suggested by previous research. * Despite barramundi's catadromous life history, and ability to disperse through marine waters, the present genetic structure indicates a division principally among river drainages. From a population genetic viewpoint, the species can be regarded as freshwater, rather than marine. * The most likely origin of barramundi in Australia is the Ord River region, with Indonesia as the route of migration. * Differences in the population structure demonstrated by nuclear and mitochondrial data indicate possible life history differences between the sexes. * Barramundi populations in different biogeographical provinces may have been substantially isolated over a long period of time, and may therefore represent independently evolving populations. This has important implications for fishery management and translocation issues for restocking rivers.

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Libros sobre el tema "Perth Region"

Team, Perth Bikeplan Study. Perth metropolitan region bikeplan: Main report. [Perth]: Perth Bikeplan Study Team, 1985.

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Water Authority of Western Australia. Wastewater 2040 strategy for the Perth region. 2^a ed. Leaderville [W.A.]: Water Authority, 1995.

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Barbara, Rowland y University of Western Australia Press., eds. Coastal plants: Perth and the south-west region. 2^a ed. Crawley, W.A: University of Western Australia Press, 2004.

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Western Australia. Dept. of Planning and Urban Development. Metroplan: A planning strategy for the Perth metropolitan region. Perth, W.A: Dept. of Planning and Urban Development, 1990.

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Davidson, W. A. Hydrogeology and groundwater resources of the Perth Region, Western Australia. Perth: Geological Survey of Western Australia, 1995.

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1947-, Bush Brian, ed. A guide to the reptiles and frogs of the Perth region. Nedlands, W.A: University of Western Australia Press, 1995.

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Dixon, K. W. Coastal plants: A guide to the identification and restoration of plants of the Perth region. Collingwood, Vic: CSIRO Publishing, 2011.

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Western Australia. Dept. of Planning and Urban Development. Metropolitan rural policy: Draft : a policy statement for rural land in the Perth Metropolitan Region. Perth, W.A: Dept. of Planning and Urban Development, 1994.

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Western Australian Water Resources Council., ed. Water sensitive residential design: An investigation into its purpose and potential in the Perth Metropolitan region. Leederville, WA: Western Australian Water Resources Council, 1990.

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O'Connor, Rory. Report on an investigation into Aboriginal significance of wetlands and rivers in the Perth-Bunbury region. Leederville, W.A: Western Australian Water Resources Council, 1989.

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Capítulos de libros sobre el tema "Perth Region"

Khan, Shahed y Bhishna Bajracharya. "The Changing Role of Regional Organisation of Councils in Australia: Case Studies from Perth Metropolitan Region". En Advances in 21st Century Human Settlements, 93–116. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-6709-0_4.

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Arsham, Hossein y Veena Adlakha. "Critical Path Stability Region". En Analyzing Security, Trust, and Crime in the Digital World, 35–60. IGI Global, 2014. http://dx.doi.org/10.4018/978-1-4666-4856-2.ch003.

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Models transform the managerial inputs into useful information for managerial decision. The Project Evaluation and Review Technique (PERT) is the most widely used model for project management. However, it requires three estimates for the duration of each activity as its input. This uncertainty in the input requirement makes the Critical Path (CP) unstable, causing major difficulties for the manager. A linear programming formulation of the project network is proposed in this chapter for determining a CP based on making one estimate for the duration of each activity. Upon finding the CP, Sensitivity Analysis (SA) of Data Perturbation (DP) is performed using the constraints of the dual problem. This largest DP set of uncertainties provides the manager with a tool to deal with the simultaneous, independent, or dependent changes of the input estimates that preserves the current CP. The application of DP results to enhance the traditional approach to PERT is presented. The proposed procedure is easy to understand, easy to implement, and provides useful information for the manager. A numerical example illustrates the process.

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"Hudson River Fishes and their Environment". En Hudson River Fishes and their Environment, editado por Kyle J. Hartman y Brian W. Nagy. American Fisheries Society, 2006. http://dx.doi.org/10.47886/9781888569827.ch10.

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Abstract.—Low water temperatures experienced by temperate fish during winter reduce muscle power, resulting in an important limitation to overwintering fishes that may explain why they often seek areas of reduced flow as winter refugia. The Hudson River is a heavily urbanized estuary, and as such, navigation and industrial influences may have particular importance to species seeking to overwinter there. In December 1995 and 1997, we used a mobile hydroacoustic survey, coupled with gill netting and midwater trawling for species identification, to identify the distribution and abundance of key species in the Hudson River. Striped bass Morone saxatilis, white perch M. americana, and bay anchovy Anchoa mitchilli, co-occurred in the lower 25 km of the river. Fish distributions were related to salinity. Striped bass and bay anchovy were found in highest densities in the lower river (Yonkers and Battery regions) and higher salinities. White perch dominated from Yonkers upriver. Acoustic population estimates of striped bass abundance from 1995 (576,110) compared favorably with a wintertime tagging study (949,000), but were grossly underestimated in 1997. Higher salinity in the Battery and Yonkers regions in 1997 may have pushed distributions of striped bass and white perch upriver compared to 1995 sampling and may have led to decreased precision in estimates. This study suggests that key Hudson River fish use much of the lower 61 km of the Hudson River as overwintering habitat.

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Seligson, Kenneth E. "Water". En The Maya and Climate Change, 103—C5.P92. Oxford University PressNew York, 2023. http://dx.doi.org/10.1093/oso/9780197652923.003.0005.

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Abstract This chapter provides a brief overview of Classic Maya water-management systems, highlighting both the challenges of securing year-round access to water and the variety of solutions engineered by communities across the lowlands to address them. In many regions, communities learned from the shortcomings of their Preclassic forebears and diversified their water capture and storage strategies. The relatively stable climate of the Classic Period contributed to the steady growth of communities for over seven centuries, but the population expansion presented its own challenges. As communities like Tikal and Edzna expanded, they adapted their water-management systems by augmenting the scale of existing reservoir and canal networks and constructing new, smaller reservoirs away from the site center. A massive, centrally planned terrace network transformed the landscape of the Vaca Plateau around Caracol to slow runoff, capture water, and saturate the soil. Palenque’s engineers continued to carve new building surfaces out of the site’s waterlogged perch on the edge of the highlands by diverting streams and runoff channels into paved conduits. In the Puuc region, Classic residents supplemented existing communal surface reservoirs with individual household cisterns. Throughout the lowlands, communities modified their natural environments to their advantage. Even a relatively stable climatic period in the tropics can include significant swings in precipitation from year to year and from subregion to subregion. Classic communities prepared for these uncertainties by diversifying water-management strategies and continuing to adapt their practices.

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Zukin, Sharon. "The VC Office and the Concentration of Capital". En The Innovation Complex, 104–39. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190083830.003.0005.

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Profiling New York–based venture capitalists and VC firms that have been established in the city since the early 2000s, the chapter examines their risky but privileged perch between Wall Street and Silicon Valley. Interviews with VCs are juxtaposed with the post–World War II history of venture capital as a distinctive form of investment and management. The VCs’ equally distinctive commitment to New York is then contrasted with the increasing geographical dispersal of their investment funds to other regions of the world. Meanwhile, the integration of some corporate and VC members of the tech “community” into New York’s business establishment suggests the formation of a local tech-financial elite, updating C. Wright Mills’s critique of the institutional bases of power.

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"Rotenone in Fisheries: Are the Rewards Worth the Risks?" En Rotenone in Fisheries: Are the Rewards Worth the Risks?, editado por Leo Demong. American Fisheries Society, 2001. http://dx.doi.org/10.47886/9781888569339.ch4.

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Abstract.—The brook trout Salvelinus fontinalis is endemic to the eastern United States, and historically was abundant in the lakes and ponds of the Adirondack Mountain region of New York State. Anthropogenic impacts have caused drastic declines in brook trout populations. A major cause of the decline has been introduction of competing fishes such as nonnative yellow perch Perca flavescens, bass Micropterus spp. and golden shiners Notemigonus crysoleucas. Range expansion of native fish species such as white suckers Catostomus commersoni and brown bullheads Ameiurus nebulosus has also been detrimental. Brook trout, a species that was commonly found alone or in simple communities with only one or two other fish species, is unable to compete successfully in these situations. Chemical reclamation using rotenone is the only viable tool that can restore these degraded systems. Follow-up studies by New York State biologists and Cornell University researchers have supported the findings of others; that the negative impacts of pond reclamation with rotenone are minor and short-term.

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"Muskellunge Management: Fifty Years of Cooperation Among Anglers, Scientists, and Fisheries Biologists". En Muskellunge Management: Fifty Years of Cooperation Among Anglers, Scientists, and Fisheries Biologists, editado por John Paul Leblanc y Patricia Chow-Fraser. American Fisheries Society, 2017. http://dx.doi.org/10.47886/9781934874462.ch25.

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Abstract.—To support Georgian Bay’s self-sustaining Muskellunge Esox masquinongy fisheries, we developed two index of nursery habitat suitability (INHS) models that can be used to identify and monitor the quality of Muskellunge nursery habitats in coastal wetlands. The INHS models were based on habitat features found in wetlands with age-0 Muskellunge identified at two large embayments in northern Georgian Bay. One INHS model had five variables that included proportional abundance of Yellow Perch Perca flavescens, proportional abundance of cyprinids, fish species richness, the wetland’s substrate slope, and a metric related to macrophyte abundance. The other INHS model included only three variables from the five-variable INHS, omitting information on macrophyte and fish species richness. When they were applied to an independent data set, both INHS models successfully tracked deterioration in nursery suitability after 15 years of sustained low water levels in Georgian Bay, but the five-variable INHS had higher overall accuracy and showed stronger discrimination between sites with and without age-0 fish. We applied the three-variable model to classify coastal wetlands in other regions of Georgian Bay and obtained a false-negative rate less than 13%. We also obtained a higher false-positive rate with the three-variable model compared with the five-variable model (54% versus 31%) because it required a lower threshold to indicate suitability (0.6 versus 0.70, respectively). These INHS models should allow managers to screen for suitable nursery habitat near current spawning sites across Georgian Bay and allow managers to predict how changes in water-level regimes might affect the suitability of spatially explicit wetland units.

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"cases, have been from Western Australia, with a further thirteen cases from the Northern Territory. It is also interesting to note that the first confirmed case of encephalitis due to Kunjin virus occurred in Western Australia in 1978, and three additional cases have been diagnosed since, two from Western Australia in 1991 and 1995, and one in Victoria in 1984 (Table 8.1). Most of the cases of Australian encephalitis in Western Australia have occurred in areas distant from the Ord River irrigation area. Of particular significance was the spread of MVE virus from the Kimberley area south to the Pilbara and Gascoyne regions causing one case of encephalitis in 1978 and three cases in 1981. It is hypothesized that movement of virus to the Pilbara region in 1978 was due to an increase in viral activity in the West Kimberley area following heavy rainfall and flooding, and that with subsequent extensive cyclonic rainfall in the Pilbara region, viraemic waterbirds moved south down the narrow coastal strip, introducing the virus into Pilbara (Stanley 1979). It is probable that a similar mechanism may have occurred in 1981. Although there has been evidence (see next section), of MVE virus activity in the Pilbara region in recent years, there have been no further cases. Analysis of the cases of Australian encephalitis has indicated that Aboriginal infants, particularly male infants, are most at risk of fatal or severe disease (Mackenzie et al. 1993a). However, tourists and visitors to the Kimberley region (and Northern Territory) have also been shown to have an increased risk of disease. Sentinel chicken surveillance Following the 1978 outbreak of Australian encephalitis, a number of sentinel chicken flocks were established in the Kimberley area. Six flocks had been established by 1981 and the number rose to twenty-four flocks in twenty-two regional centres in the Kimberley, Pilbara and Gascoyne regions by 1989 (Broom et al. 1989; Mackenzie et al. 1992; 1994c). Each flock contains twelve chickens which are bled at two weekly intervals between November and June, the period of increased risk of virus transmission, and monthly at other times. The sera are then assayed for antibody to MVE and Kunjin viruses in our laboratory in Perth to provide an early warning system of increased virus activity. Initially sera were tested by HI for the presence of antibody, and positive sera were then subjected to neutralization assay to determine the identity of the infecting virus. A more rapid enzyme-linked immunosorbent assay (ELISA) was introduced in 1986 (Broom et al. 1987), and more recently a competitive ELISA using specific monoclonal antibodies to identify the virus is being used (Hall et al. 1992; 1995). Sentinel chicken flocks were also established in 1992 in the Northern Territory to monitor MVE activity (Aldred et al. 1992). The sentinel chicken programme has clearly shown that MVE virus is enzootic in several areas of the Kimberley region, particularly in the Ord River area at Kununurra. Seroconversions in sentinel chickens occur every year during the latter half of the wet season". En Water Resources, 131. CRC Press, 1998. http://dx.doi.org/10.4324/9780203027851-24.

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Actas de conferencias sobre el tema "Perth Region"

Allinson, William Guy, Richard Edward Dunsmore, Peter Neal y Minh Ho. "The Cost of Carbon Capture and Storage in the Perth Region". En SPE Asia Pacific Oil & Gas Conference and Exhibition. Society of Petroleum Engineers, 2006. http://dx.doi.org/10.2118/101122-ms.

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Cooper, Cortis K. "A Comparison of Tow Criteria Derived From Satellite- and Ship-Based Observations". En ASME 1997 Turbo Asia Conference. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/97-aa-053.

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Three estimates of the 10-yr significant wave height (Hs) are developed for 16 tow scenarios from Perth, Singapore, and Korea to the northwest shelf of Australia. One of the estimates is based on Global Wave Statistics (Hogben, et al., 1986), a database of visual ship observations that has been used extensively by the oil industry. These results are compared to estimates derived from two recently released commercial satellite altimeter databases, SOS and CLIOSat. The mean of the 10-yr Hs for the 16 scenarios calculated from the ship data is 40% (2.6 m) larger then the satellite databases while the variance is 40% less. Evidence suggests the ship-based values are unrealistically high for a number of the scenarios. Results SOS are internally consistent and generally compare favorably with high-quality model hindcast studies in the region. The first-order statistics from CLIOSat compare well to SOS but there are substantial differences for some of the scenarios. Several of the CLIOSat-derived extremes are internally inconsistent and don’t compare well to hindcast results However, firm conclusions must await further work.

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Beemer, Ryan D., Alexandre N. Bandini-Maeder, Jeremy Shaw, Ulysse Lebrec y Mark J. Cassidy. "The Granular Structure of Two Marine Carbonate Sediments". En ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-77087.

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Calcareous sediments are prominent throughout the low-latitudinal offshore environment and have been known to be problematic for offshore foundation systems. These fascinating soils consist largely of the skeletal remains of single-celled marine organisms (plankton and zooplankton) and can be as geologically complex as their onshore siliceous counter parts. To enable an adequate understanding of their characteristics, in particular, their intra-granular micro-structure, it is important that geotechnical engineers do not forget about the multifaceted biological origins of these calcareous sediments and the different geological processes that created them. In this paper, the 3D models of soils grains generated from micro-computed tomography scans, scanning electeron microscope images, and optical microscope images of two calcareous sediments from two different depositional environments are presented and their geotechnical implications discussed. One is a coastal bioclastic sediment from Perth, Western Australia that is geologically similar to carbonate sediments typically used in micro-mechanics and particle crushing studies in the literature. The other is a hemipelagic sediment from a region of the North West Shelf of Australia that has historically been geotechnically problematic for engineers. The results show there is a marked difference between coastal bioclastic and hemipelagic sediments in terms of geological context and the associated particle micro-structures. This brings into question whether a coastal bioclastic calcareous sediment is a good micro-mechanical substitute for a hemipelagic one.

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Parker, Rob y Nick Parkhurst. "Perth, Western Australia Regional Headquarters for Companies Servicing The Australian and South East Asian Petroleum Industry". En Offshore Technology Conference. Offshore Technology Conference, 1998. http://dx.doi.org/10.4043/8634-ms.

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Смолина, Наталья Васильевна y Ольга Андреевна Гарбузова. "STRUCTURE AND DYNAMICS OF CATCHES OF THE SHURYSHKARSKY DISTRICT OF THE YAMALO-NENETS AUTONOMOUS OKRUG". En Сборник избранных статей по материалам научных конференций ГНИИ «Нацразвитие» (Санкт-Петербург, Июль 2021). Crossref, 2021. http://dx.doi.org/10.37539/july318.2021.74.17.014.

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Анализ статистики уловов Шурышкарского района показал, что в 2015-2020 гг. промысловое значение имели 12 видов рыб, обеспечивая уловы от 8,6 до 10,1 тыс. тонн. Наибольший вклад в уловы по району вносили щука (47 %) и язь (27 %), доля сиговых в этот период снизилась с 22 до 11 %. Доля района в освоении биоресурсов ЯНАО возросла с 13 до 23 %, вклад в общие уловы щуки, леща, язя, окуня и карася в отдельные годы превышал 30 %. The analysis of catch statistics of the Shuryshkarsky district showed that in 2015-2020, 12 fish species were of commercial importance, providing catches from 8.6 to 10.1 thousand tons. The largest contribution to catches in the region was made by pike (47 %) and ide (27 %), the share of whitefish in this period decreased from 22 to 11 %. The share of the district in the development of biological resources of the Yamalo-Nenets Autonomous District increased from 13 to 23 %, the contribution to the total catches of pike, bream, ide, perch and crucian in some years exceeded 30 %.

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Silveira, Thiago, Reynaldo Oliveira Júnior, Sheila Filgueiras y Bruno Eurico. "Estudo retrospectivo transversal do perfil dos portadores de vírus da imunodeficiência humana do sul do estado do Rio de Janeiro". En XIII Congresso da Sociedade Brasileira de DST - IX Congresso Brasileiro de AIDS - IV Congresso Latino Americano de IST/HIV/AIDS. Zeppelini Editorial e Comunicação, 2021. http://dx.doi.org/10.5327/dst-2177-8264-202133p132.

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Introdução: A infecção pelo vírus vírus da imunodeficiência humana corresponde a um grande desafio para a saúde pública. Entender a infecção não só a partir de sua fisiopatologia torna-se uma necessidade para o controle da doença. Objetivo: O estudo busca traçar o perfil dos portadores de vírus da imunodeficiência humana/aids na região do Médio Paraíba do Estado do Rio de Janeiro, contribuindo, dessa forma, para o entendimento da infecção nessa região do estado. Métodos: Trata-se de estudo descritivo, com abordagem quantitativa, realizado em 12 municípios situados na região do Médio Paraíba. Foram utilizados dados extraídos das bases de dados do Departamento de Vigilância e Saúde do Ministério da Saúde a partir dos casos de vírus da imunodeficiência humana/aids notificados no Sistema de Informação de Agravos de Notificação e declarados no Sistema de Informação de Mortalidade, observando-se recorte temporal de 1980 a 2018. Resultados: O estudo demonstra que a região possui índice elevado da infecção comparado ao Brasil e que os homens são os mais prevalentes à infecção pelo vírus da imunodeficiência humana na região, portanto as mulheres são as que mais tardiamente buscam o diagnóstico. No que se refere à raça, os brancos são os mais predominantes e, quanto ao grau de instrução, observa-se que pessoas com menor grau de instrução são as mais acometidas. Aregião ainda conta com uma população jovem infectada perto dos 10% dos infectados e a transmissão vertical ainda é existente. Conclusão: Observa-se que na região deve-se intensificar a educação em saúde para promoção e prevenção da doença, investir na atenção a mulher com vírus da imunodeficiência humana, de modo a reduzir a não adesão e, assim, a transmissão vertical.

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Chaves, Clareane Ternus y JOAQUÍN ASAD. "O MANEJO PECUÁRIO QUE BENEFICIA A CONSERVAÇÃO DO VEADO-CAMPEIRO (OZOTOCEROS BEZOARTICUS)". En II Congresso Brasileiro de Biodiversidade Virtual. Revista Multidisciplinar de Educação e meio ambiente, 2022. http://dx.doi.org/10.51189/ii-conbiv/5865.

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Introdução: O Pampa Deprimido, ao leste da Argentina, ainda possui 80% de seu território dominado por pastagens naturais, os quais sustentam a principal região pecuária do país. Devido ao aumento do pastejo contínuo pelo gado, a produtividade primária líquida aérea (PPLA) dessas pastagens foi reduzida, especialmente durante o inverno. Essa redução não só afeta a produção pecuária, mas também afeta um grande herbívoro nativo em perigo de extinção que habita estabelecimentos pecuários: o veado-campeiro (Ozotoceros bezoarticus). Existem 2 manejos pecuários que buscam aumentar a PPLA de inverno. Um deles consiste em eliminar a vegetação remanescente do verão com herbicidas e, assim, liberar recursos para aumentar a PPLA das pastagens de inverno (promoção química). O outro manejo possui a mesma lógica que a anterior, exceto que a eliminação da vegetação do verão se realiza mediante um pastejo intenso do mesmo gado (promoção a dente). Objetivo: O objetivo deste trabalho é comparar a PPLA de inverno de pastagens sob 3 diferentes manejos pecuários (pastejo contínuo, promoção química e promoção a dente) a fim de melhorar tanto a produção pecuária quanto a conservação do veado-campeiro. Material e métodos: A PPLA média de inverno foi estimada para o período de 2013-2019 em 4 estabelecimentos pecuários que realizam esses 3 manejos. O histórico de uso de cada unidade de manejo (lote) foi fornecido pelos proprietários dos estabelecimentos. Os estabelecimentos ficam perto de um Parque Nacional onde vive uma população de veados-campeiros. Resultados: A PPLA foi estimada por satélite a partir do sensor remoto MODIS utilizando o modelo ecofisiológico de Monteith. A PPLA média de inverno dos 3 manejos foi comparada com uma ANOVA. O manejo de promoção a dente proporcionou valores de PPLA de inverno 13% superiores aos de promoção química e pastejo contínuo. Conclusão: Os resultados evidenciam que, optando por realizar promoção de pastagens de inverno a dente, não só a PPLA seria aumentada durante o período invernal, como não seria necessário o uso de insumos externos, como herbicidas. Além disso, o aumento do PPLA beneficia o habitat para a conservação do veado-campeiro.

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Informes sobre el tema "Perth Region"

Ryan, Mark David, Greg Hearn, Marion McCutcheon, Stuart Cunningham y Katherine Kirkwood. Australian Cultural and Creative Activity: A Population and Hotspot Analysis: Busselton. Queensland University of Technology, enero de 2021. http://dx.doi.org/10.5204/rep.eprints.207597.

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Located a two-and-a-half hour drive south of Perth, Busselton is one of the largest and fastest growing regional centres in WA, a lifestyle services hub and the gateway to the internationally renowned wine region and popular tourist destination of Margaret River. Promoted by the City of Busselton council as the ‘Events Capital of WA’, Busselton has a strong festival and events economy that fuels local creative and arts production, supported by demographic shifts and population growth that is resulting in more creatives living and working in the city.

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Grosjean, Emmanuelle, Lisa Hall, Chris Boreham y Tamara Buckler. Source rock geochemistry of the offshore northern Perth Basin: regional hydrocarbon prospectivity of the offshore northern Perth Basin. Geoscience Australia, 2017. http://dx.doi.org/10.11636/record.2017.018.

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PERT prescribing in pancreatic cancer. Dlab, enero de 2023. http://dx.doi.org/10.53764/rpt.a0b1b51c7a.

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Background: Cancer treatments were variably disrupted during the COVID-19 pandemic. Despite UK national guidelines recommending pancreatic enzyme replacement therapy to all people with unresectable pancreatic cancer, observational studies demonstrate under-prescribing. Aim: To investigate the impact of the COVID-19 pandemic on the prescribing of pancreatic enzyme replacement to people with unresectable pancreatic cancer. Methods: With the approval of NHS England, we conducted a cohort study using 24 million health records through the OpenSAFELY-TPP research platform. We modelled prescribing rates from 1st January 2015 to 30th November 2022 and investigated the effect of COVID-19 with multivariable linear regression. Results We found no reduction in pancreatic enzyme replacement therapy during the COVID-19 pandemic. Overall, since 2015, the rates of prescribing increased steadily over time by 1% every year. The national rates ranged from 41% in 2015 to 50% in 2022. There was substantial regional variation. The highest rates of 50% to 60% were in the West Midlands and lowest (20% to 30%) in London. Conclusions: The COVID-19 pandemic did not affect PERT prescribing in unresectable pancreatic cancer. Although overall rates increased over time, substantial under-prescribing persists. At just under 50% in 2022, the rates were still below the recommended 100% standard. Despite the national guidelines, under-prescribing of PERT continued and has improved only marginally since their publication. This could be an important missed opportunity to reduce morbidity for patients with pancreatic cancer. The research into barriers to prescribing of PERT and geographic variation is urgently needed to improve quality of care.

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