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1

Carver, Scott Stevenson. "Dryland salinity, mosquitoes, mammals and the ecology of Ross River virus." University of Western Australia. School of Animal Biology, 2008. http://theses.library.uwa.edu.au/adt-WU2009.0100.

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[Truncated abstract] In an era of emerging and resurging infectious diseases, understanding the ecological processes that influence pathogen activity and the influences of anthropogenic change to those are critical. Ross River virus (RRV, Togoviridae: Alphavirus) is a mosquito-borne zoonosis occurring in Australia with a significant human disease burden. In the southwest of Western Australia (WA) RRV is principally vectored by Aedes camptorhynchus Thomson (Diptera: Culicidae), which is halophilic. The inland southwest, the Wheatbelt region, of WA is substantially affected by an anthropogenic s
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2

Sheldon, Fran. "Littoral ecology of a regulated dryland river (River Murray, South Australia), with reference to the gastropoda /." Title page, contents and abstract only, 1994. http://web4.library.adelaide.edu.au/theses/09PH/09phs5441.pdf.

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3

Boys, Craig Ashley, and n/a. "Fish-Habitat Associations in a Large Dryland River of the Murray-Darling Basin, Australia." University of Canberra. Resource, Environmental & Heritage Sciences, 2007. http://erl.canberra.edu.au./public/adt-AUC20070807.112943.

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Many aspects concerning the association of riverine fish with in-channel habitat remain poorly understood, greatly hindering the ability of researchers and managers to address declines in fish assemblages. Recent insights gained from landscape ecology suggest that small, uni-scalar approaches are unlikely to effectively determine those factors that influence riverine structure and function and mediate fish-habitat associations. There appears to be merit in using multiple-scale designs built upon a geomorphologically-derived hierarchy to bridge small, intermediate and large spatial scales in la
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4

Medeiros, Elvio S. F., and n/a. "Trophic Ecology and Energy Sources for Fish on the Floodplain of a Regulated Dryland River: Macintyre River, Australia." Griffith University. Australian School of Environmental Studies, 2005. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20051115.174552.

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Drylands occupy about one-third of the world's land surface area and rivers in these regions have less predictable flow regimes than those in humid tropical and temperate regions. Australia's dryland river-floodplain systems cycle through recurrent periods of floods and droughts, oflen resulting in extreme hydrological variability. As a result, these systems have been described as having a 'boom and boost' ecology with periods of high productivity associated with flooding. Not surprisingly, flow and its variability have been recognised as major driving forces in the ecological functioning of A
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5

Medeiros, Elvio S. F. "Trophic Ecology and Energy Sources for Fish on the Floodplain of a Regulated Dryland River: Macintyre River, Australia." Thesis, Griffith University, 2005. http://hdl.handle.net/10072/365765.

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Drylands occupy about one-third of the world's land surface area and rivers in these regions have less predictable flow regimes than those in humid tropical and temperate regions. Australia's dryland river-floodplain systems cycle through recurrent periods of floods and droughts, oflen resulting in extreme hydrological variability. As a result, these systems have been described as having a 'boom and boost' ecology with periods of high productivity associated with flooding. Not surprisingly, flow and its variability have been recognised as major driving forces in the ecological functioning of A
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6

McGinness, Heather M., and n/a. "SPATIAL HETEROGENEITY AND HYDROLOGICAL CONNECTIVITY IN A DRYLAND, ANABRANCHING FLOODPLAIN RIVER SYSTEM." University of Canberra. Resource, Environmental & Heritage Sciences, 2007. http://erl.canberra.edu.au./public/adt-AUC20070731.094606.

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Riverine landscapes are complex. More than just a single channel, they comprise a shifting mosaic of hydrogeomorphic patches with varying physical and biological characteristics. These patches are connected by water during flows of varying magnitude and frequency, at a range of spatial and temporal scales. Combined, landscape complexity and hydrological connectivity create biological diversity that in turn maintains the productivity, ecological function, and resilience of these systems. This thesis investigates the ecological importance of spatial heterogeneity and temporal hydrological connec
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7

Medeiros, Elvio S. F. "Trophic ecology and energy sources for fish on the floodplain of a regulated dryland river Macintyre River, Australia /." Connect to this title online, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20051115.174552/.

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8

Carini, Giovannella, and n/a. "Effects of Contemporary and Historical Processes on Population Genetic Structure of Two Freshwater Species in Dryland River Systems (Western Queensland, Australia)." Griffith University. Australian School of Environmental Studies, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20050113.081250.

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Arid and semiarid river systems in Western Queensland, Australia, are characterized by the unpredictable and highly variable nature of their hydrological regimes as a result of the episodic nature of rain events in the region. These dryland rivers typically experience episodic floods and extremely low or no flow periods. During low or no flow periods, water persists only in relatively wide and deep sections of the river channels, which are called 'waterholes'. These isolated waterholes serve as refugia for aquatic species during protracted intervals between floods. In such discontinuous riveri
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9

Carini, Giovannella. "Effects of Contemporary and Historical Processes on Population Genetic Structure of Two Freshwater Species in Dryland River Systems (Western Queensland, Australia)." Thesis, Griffith University, 2004. http://hdl.handle.net/10072/367070.

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Arid and semiarid river systems in Western Queensland, Australia, are characterized by the unpredictable and highly variable nature of their hydrological regimes as a result of the episodic nature of rain events in the region. These dryland rivers typically experience episodic floods and extremely low or no flow periods. During low or no flow periods, water persists only in relatively wide and deep sections of the river channels, which are called 'waterholes'. These isolated waterholes serve as refugia for aquatic species during protracted intervals between floods. In such discontinuous riveri
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10

Brunner, Peter Rene. "Dryland Channel Forms and Processes: A Whole Catchment Scale Study of the Diamantina River, Central Australia." Thesis, Griffith University, 2013. http://hdl.handle.net/10072/367330.

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Many aspects of dryland river research, such as channel forms and processes, remain poorly investigated at the catchment scale because of the practical difficulties and costs of carrying out fieldwork in remote dryland regions. Remote sensing techniques, including Shuttle Radar Topography Mission (SRTM) data, and modelling are partly overcoming these difficulties. This study has used fieldwork, remote sensing and computational modelling to investigate channel forms and processes along the Diamantina River at the catchment scale, a large dryland river in the Lake Eyre Basin, Australia. It focus
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11

Jardine, Andrew. "The impact of dryland salinity on Ross River virus in south-western Australia : an ecosystem health perspective." University of Western Australia. School of Population Health, 2007. http://theses.library.uwa.edu.au/adt-WU2007.0182.

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[Truncated abstract] A functional ecosystem is increasingly being recognised as a requirement for health and well being of resident human populations. Clearing of native vegetation for agriculture has left 1.047 million hectares of south-west Western Australia affected by a severe form of environmental degradation, dryland salinity, characterised by secondary soil salinisation and waterlogging. This area may expand by a further 1.7-3.4 million hectares if current trends continue. Ecosystems in saline affected regions display many of the classic characteristics of Ecosystem Distress Syndrome (E
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12

Wise, Julia L. "Towards Understanding Dissolved Organic Carbon Dynamics at the Intersection of Anthropogenic Modifications and Natural Processes of a Dryland River." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1470753635.

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13

Bugan, Richard D. H. "Modeling and regulating hydrosalinity dynamics in the Sandspruit river catchment (Western Cape)." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86492.

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Thesis (PhD)--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: Bugan, R.D.H. Modelling and regulating hydrosalinity dynamics in the Sandspruit River catchment (Western Cape). PhD dissertation, Stellenbosch University. The presence and impacts of dryland salinity are increasingly become evident in the semi-arid Western Cape. This may have serious consequences for a region which has already been classified as water scarce. This dissertation is a first attempt at providing a methodology for regulating the hydrosalinity dynamics in a catchment affected by dryland salinity, i.e. the Sandsp
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14

Cunha, Costa Alexandre. "Analyzing and modelling of flow transmission processes in river-systems with a focus on semi-arid conditions." Phd thesis, Universität Potsdam, 2012. http://opus.kobv.de/ubp/volltexte/2012/5969/.

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One of the major problems for the implementation of water resources planning and management in arid and semi-arid environments is the scarcity of hydrological data and, consequently, research studies. In this thesis, the hydrology of dryland river systems was analyzed and a semi-distributed hydrological model and a forecasting approach were developed for flow transmission processes in river-systems with a focus on semi-arid conditions. Three different sources of hydrological data (streamflow series, groundwater level series and multi-temporal satellite data) were combined in order to analyze t
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15

Zhang, Lulu. "Impact of Land Use and Climate Change on Hydrological Ecosystem Services (Water Supply) in the Dryland Area of the Middle Reaches of the Yellow River." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-183409.

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Driven by many factors, the water supply services (streamflow and groundwater) of many rivers in the dryland area of China have declined significantly. This aggravates the inherent severe water shortages and results in increased severity in the water use conflicts that are threatening sustainable development in the region. Innovative strategies towards more water-efficient land management are vital for enhancing water quantity to ensure water supply security. A key step in the successful development and implementation of such measures is to understand the response of hydrological processes and
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16

Capon, Samantha Jane, and n/a. "Flow Variability and Vegetation Dynamics in a Large Arid Floodplain: Cooper Creek, Australia." Griffith University. Australian School of Environmental Studies, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20040513.110733.

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Throughout arid and semi-arid inland Australia, many extensive floodplains occur in association with rivers which are amongst the most hydrologically variable in the world. As rainfall in these areas is characteristically low and patchy, conditions in Australia's 'dryland' floodplains fluctuate unpredictably between extended periods of drought and huge floods that transform vast areas into wetlands, often for months at a time. Vegetation in these floodplains is commonly dominated by short grass and forb associations and patches of open succulent shrubland which are attributed with high ecolo
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17

Capon, Samantha Jane. "Flow Variability and Vegetation Dynamics in a Large Arid Floodplain: Cooper Creek, Australia." Thesis, Griffith University, 2004. http://hdl.handle.net/10072/366451.

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Throughout arid and semi-arid inland Australia, many extensive floodplains occur in association with rivers which are amongst the most hydrologically variable in the world. As rainfall in these areas is characteristically low and patchy, conditions in Australia's 'dryland' floodplains fluctuate unpredictably between extended periods of drought and huge floods that transform vast areas into wetlands, often for months at a time. Vegetation in these floodplains is commonly dominated by short grass and forb associations and patches of open succulent shrubland which are attributed with high ecolo
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18

Holcomb, Megan Kathleen. "The Challenges and Opportunities in Monitoring and Modeling Waterborne Pathogens in Water- and Resource-Restricted Africa: Highlighting the critical need for multidisciplinary research and tool advancement." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/54561.

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Water is a primary shared resource that connects all species across the landscape and can facilitate shared exposure to a community of waterborne pathogens. Despite remarkable global progress in sanitation and hygiene development in the past two decades, infectious diarrhea remains a prominent public health threat in sub-Saharan Africa. This thesis identifies and discusses persistent challenges limiting the success of current waterborne disease management strategies and several existing research hurdles that continue to impede characterization of microbial transmission and transport. In this w
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19

Zhang, Lulu [Verfasser], Karl-Heinz [Akademischer Betreuer] Feger, Yanhui [Akademischer Betreuer] Wang, and Kai [Akademischer Betreuer] Schwärzel. "Impact of Land Use and Climate Change on Hydrological Ecosystem Services (Water Supply) in the Dryland Area of the Middle Reaches of the Yellow River / Lulu Zhang. Betreuer: Karl-Heinz Feger ; Yanhui Wang. Gutachter: Karl-Heinz Feger ; Yanhui Wang ; Kai Schwärzel." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://d-nb.info/1078839859/34.

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20

Baggiano, Olivier. "The Murray - Darling Turtles: Gene Flow and Population Persistance in Dryland Rivers." Thesis, Griffith University, 2012. http://hdl.handle.net/10072/367471.

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Australia’s largest and most important waterway- the Murray-Darling Basin (MDB) - is under threat owing to predicted increases in temperature extremes and reduction in rainfall - runoff in the coming decades. Management strategies are required that incorporate an understanding of dispersal patterns of the MDB fauna and flora. Patterns of dispersal have typically been studied through direct organismal studies but genetic approaches, in which the movement of genes in the landscape is used as a correlate of species dispersal, can provide a more comprehensive view by investigating at a much larger
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21

Pattison, James Lee. "Orma livelihoods in Tana River district, Kenya : a study of constraints, adaptation and innovation." Thesis, University of Edinburgh, 2011. http://hdl.handle.net/1842/5928.

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This study focuses on the constraints, adaptations and innovations in the livelihoods of Orma pastoralists. The fieldwork took place with families around Tiltila, Waldena and Kalalani over a period of 9 months in 2007/08. The position of pastoralist peoples in East Africa is characterised by social, political and economic marginalisation, weak land tenure, and declining per capita livestock holdings, while their shrinking grazing lands are widely regarded to be on the front line of climate change, both in terms of climate impacts and biofuel/agribusiness land pressure. The dearth of good quali
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22

Fox, John Tyler. "Spatiotemporal Patterns and Drivers of Surface Water Quality and Landscape Change in a Semi-Arid, Southern African Savanna." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/81462.

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The savannas of southern Africa are a highly variable and globally-important biome supporting rapidly-expanding human populations, along with one of the greatest concentrations of wildlife on the continent. Savannas occupy a fifth of the earth's land surface, yet despite their ecological and economic significance, understanding of the complex couplings and feedbacks that drive spatiotemporal patterns of change are lacking. In Chapter 1 of my dissertation, I discuss some of the different theoretical frameworks used to understand complex and dynamic changes in savanna structure and composition.
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23

McDonald, Alyson Kay. "Hydrologic Impacts of Saltcedar Control Along a Regulated Dryland River." Thesis, 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-12-8633.

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Tens of millions of dollars have been spent to control Tamarix (saltcedar) trees along waterways in the Southwestern United States for the purpose of increasing streamflow yet no increase in streamflow has been demonstrated. The Pecos River Ecosystem Project (PREP) served as a case study to characterize surface and groundwater interaction along the Pecos River in Texas, assess the influence of saltcedar transpiration on stream stage and water table fluctuations, and evaluate the impacts of large-scale saltcedar control on baseflows. This is the first study that has investigated the influence o
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24

Sheldon, Fran. "Littoral ecology of a regulated dryland river (River Murray, South Australia), with reference to the gastropoda / Fran Sheldon." Thesis, 1994. http://hdl.handle.net/2440/21509.

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Copies of author's previously published articles inserted.<br>Bibliography: p. 377-400.<br>xiv, 400, [20] p., [5] leaves of plates : ill. (some col.), maps ; 30 cm.<br>Thesis (Ph.D.)--University of Adelaide, Dept. of Zoology, 1995
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25

Gillen, John (Jake) Spencer. "An ecological study of the landscape, perennial plants and soils of the cooper creek floodplain, South Australia." Phd thesis, 2010. http://hdl.handle.net/1885/111996.

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This study presents a quantitative account of vegetation-soil relationships for the perennial vegetation of the Cooper Creek floodplain, in South Australia. Cooper Creek is an internationally significant and increasingly rare example of one of a naturally functioning, unregulated, dryland river system both nationally and internationally. The area for this study is delineated by the boundaries of the Ramsar listed Coongie Lakes wetland complex. This is a region of unique ecological significance: a highly biologically productive floodplain system with
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