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- Western Australia (21)
- Salinity (14)
- Hydrogeology (9)
- Soil (9)
- Groundwater (8)
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- Land use (6)
- Natural resources (6)
- Remnant vegetation (6)
- Soil degradation (6)
- Geology (5)
- Land management (5)
- Risk assessment (5)
- Watershed management (5)
- Climate (4)
- Economic analysis (4)
- Hydrology (4)
- Waterlogging (4)
- Agriculture (3)
- Groundwater recharge (3)
- Oil mallee (3)
- Watersheds (3)
- Agricultural land (2)
- Agricultural production (2)
- Agroforestry (2)
- Biodiversity (2)
- Boddington (WA Shire) (2)
- Climatic change (2)
- Demography (2)
- Drainage (2)
- Esperance (WA Shire) (2)
- Publication
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- Resource management technical reports (16)
- Agriculture reports (4)
- School of Earth, Environmental, and Marine Sciences Faculty Publications and Presentations (3)
- OES Faculty Publications (2)
- Academic Resources Faculty and Staff Publications (1)
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- All Faculty Scholarship for the College of the Sciences (1)
- Arkansas Agricultural Experiment Station Research Series (1)
- Biosystems and Agricultural Engineering Faculty Publications (1)
- Bulletin of the University of Nebraska State Museum (1)
- Dartmouth Scholarship (1)
- Department of Agricultural Leadership, Education, and Communication: Faculty Publications (1)
- Environmental Science and Management Faculty Publications and Presentations (1)
- Geography Publications and Other Works (1)
- Geosciences: Faculty Publications (1)
- Land resources series (1)
- Science and Mathematics Faculty Presentations (1)
- Technical Bulletins (1)
- VIMS Articles (1)
Articles 1 - 30 of 39
Full-Text Articles in Earth Sciences
Detecting Submarine Groundwater Discharge With Synoptic Surveys Of Sediment Resistivity, Radium, And Salinity, John A. Breier, Crystaline F. Breier, Henrietta Edmonds
Detecting Submarine Groundwater Discharge With Synoptic Surveys Of Sediment Resistivity, Radium, And Salinity, John A. Breier, Crystaline F. Breier, Henrietta Edmonds
School of Earth, Environmental, and Marine Sciences Faculty Publications and Presentations
A synoptic geophysical and geochemical survey was used to investigate the occurrence and spatial distribution of submarine discharges of water to upper Nueces Bay, Texas. The 17 km survey incorporated continuous resistivity profiling; measurements of surface water salinity, temperature, and dissolved oxygen; and point measurements of dissolved Ra isotopes. The survey revealed areas of interleaving, vertical fingers of high and low conductivity extending up through 7 m of bay bottom sediments into the surface water, located within 100 m of surface salinity and dissolved Ra maxima along with peaks in water temperature and lows in dissolved oxygen. These results indicate …
Estimation Of Iron Solubility From Observations And A Global Aerosol Model, Chao Luo, N. M. Mahowald, N. Meskhidze, Y. Chen, R. L. Siefert, A. R. Baker, Anne M. Johansen
Estimation Of Iron Solubility From Observations And A Global Aerosol Model, Chao Luo, N. M. Mahowald, N. Meskhidze, Y. Chen, R. L. Siefert, A. R. Baker, Anne M. Johansen
All Faculty Scholarship for the College of the Sciences
Mineral aerosol deposition is the dominant source of iron to the open ocean. Soil iron is typically insoluble and understanding the atmospheric processes that convert insoluble iron to the more soluble forms observed over the oceans is crucial. In this paper, we model several proposed processes for the conversion of Fe(III) to Fe(II), and compare with cruise observations. The comparisons show that the model results in similar averaged magnitudes of iron solubility as measured during 8 cruises in 2001–2003. Comparisons show that results of cases including cloud, SO2 and hematite processing are better than the other approaches used using …
Potential Of Modis Evi And Surface Temperature For Directly Estimating Per-Pixel Ecosystem C Fluxes, Abdullah Rahman, Daniel A. Sims, Vicente D. Cordova, Bassil Z. El-Masri
Potential Of Modis Evi And Surface Temperature For Directly Estimating Per-Pixel Ecosystem C Fluxes, Abdullah Rahman, Daniel A. Sims, Vicente D. Cordova, Bassil Z. El-Masri
School of Earth, Environmental, and Marine Sciences Faculty Publications and Presentations
We tested the potential of estimating per-pixel gross primary production (GPP) directly from the MODIS enhanced vegetation index (EVI) and respiration directly from MODIS surface temperature (MOD11). Carbon flux data were obtained from 10 eddy covariance tower sites representing a wide range of North American vegetations. The correlation between across-site tower GPP and EVI was comparable (r = 0.77) to that between tower GPP and MOD17-GPP (r = 0.73), suggesting that EVI could be used to provide reasonably accurate direct estimates of GPP on a truly per-pixel basis. There was also a strong relationship (r2 = 0.67) between respiration and …
Coral Reef Ed-Ventures: An Environmental Education Program For School Children In San Pedro, Belize, H. Allen Curran, Susan Etheredge, Elizabeth Callaghan, Paulette M. Peckol
Coral Reef Ed-Ventures: An Environmental Education Program For School Children In San Pedro, Belize, H. Allen Curran, Susan Etheredge, Elizabeth Callaghan, Paulette M. Peckol
Geosciences: Faculty Publications
No abstract provided.
Potential Impacts Of Climate Change On Agricultural Land Use Suitability : Wheat, Dennis Van Gool, Luke Vernon
Potential Impacts Of Climate Change On Agricultural Land Use Suitability : Wheat, Dennis Van Gool, Luke Vernon
Resource management technical reports
This publication considers the impact of climate change on wheat crops. While a model was first used, it was only partially validated against real data, hence the model is now used as a decision support system that allows people with crop, land resource and climate knowledge to determine potential impacts of climate change on crop growth and production in Western Australia.
Effects Of Sunlight On Decomposition Of Estuarine Dissolved Organic C, N And P And Bacterial Metabolism, Sl Mccallister, Je Bauer, J Kelly, Hw Ducklow
Effects Of Sunlight On Decomposition Of Estuarine Dissolved Organic C, N And P And Bacterial Metabolism, Sl Mccallister, Je Bauer, J Kelly, Hw Ducklow
VIMS Articles
The effects of natural sunlight and microbial decomposition on DOC, DON, and DOP were investigated along the salinity gradient of a temperate coastal plain estuary. The impact of sunlight-irradiated DOM on bacterial properties (bacterial abundance, production, bacterial growth efficiency [BGE]) was also followed. Surface-water light levels resulted in no detectable abiotic production of NH4+ or PO43- or loss of DOC. Bacterial decomposition of DOC was enhanced by 27 to 200 % in irradiated relative to dark treatments. There was, however, no corresponding enhancement in DON and DOP remineralization. Significant differences in bacterial decomposition of light-exposed DOC were frequently observed following …
A Systems View Of Life: A Grander Order In The Complexity Of Life, Steven M. Gollmer
A Systems View Of Life: A Grander Order In The Complexity Of Life, Steven M. Gollmer
Science and Mathematics Faculty Presentations
Design has been a key and yet elusive word in the areas of science and philosophy for many years. It seemed to reach its apex in 1802 with Paley’s Natural Theology. However, in the wake of Darwin’s Origin the recognition of design as part of a biological research paradigm has been greatly undermined. Design as expressed in Natural Theology is equivalent to that of a highly tuned machine. The parts are idealized and their relationships are synchronized and static. Although we see design of this type in nature, it has limitations when dealing with dynamic, complex interactions between components of …
Grass Patch-Salmon Gums Area : Catchment Appraisal 2005, Angela Alderman
Grass Patch-Salmon Gums Area : Catchment Appraisal 2005, Angela Alderman
Resource management technical reports
Rapid catchment appraisal to assess the condition of, and future risks to, agricultural and natural resources within the Grass Patch-Salmon Gums area in Western Australia.
Major Eastern Wheatbelt Soils To Characterise Soil Moisture Availability, Jeffrey Jon Russell
Major Eastern Wheatbelt Soils To Characterise Soil Moisture Availability, Jeffrey Jon Russell
Resource management technical reports
In the Eastern Wheatbelt of Western Australia, there are seven major soil groups (acid sands, good soilplain soils, gravelly sands, duplex soils, medium-heavy soils, heavy non-friable soils and heavy friable soils. This report considers the ability of various soils to store or retain water in an attempt to partially determine the yield potential of crops.
Integrated Recombinant Protein Expression And Purification Platform Based On Ralstonia Eutropha, Gavin C. Barnard, Jesse D. Mccool, David W. Wood, Tillman U. Gerngross
Integrated Recombinant Protein Expression And Purification Platform Based On Ralstonia Eutropha, Gavin C. Barnard, Jesse D. Mccool, David W. Wood, Tillman U. Gerngross
Dartmouth Scholarship
Protein purification of recombinant proteins constitutes a significant cost of biomanufacturing and various efforts have been directed at developing more efficient purification methods. We describe a protein purification scheme wherein Ralstonia eutropha is used to produce its own “affinity matrix,” thereby eliminating the need for external chromatographic purification steps. This approach is based on the specific interaction of phasin proteins with granules of the intracellular polymer poly
Crop Yield Response To Precision Deep Tillage, Larry G. Wells, Timothy S. Stombaugh, Scott A. Shearer
Crop Yield Response To Precision Deep Tillage, Larry G. Wells, Timothy S. Stombaugh, Scott A. Shearer
Biosystems and Agricultural Engineering Faculty Publications
Experimental precision deep tillage was applied at three sites in central Kentucky with relatively well-drained silt loam soils in no-till crop production. Fields were divided into 0.4 ha (1 ac) grid cells using DGPS mapping. Assessment of soil compaction by machinery traffic was made using multiple soil cone penetrometer measurements and expressed as cone index (CI). Corn, wheat, and soybean yields were depressed in grid cells with CIavg ≥ 1.5 MPa (218 psi) prior to application of tillage treatments at sites 1 and 3, whereas at site 2, where most of the highest average CI values ranged from 1.44 …
Adoption Of Riparian Forest Buffers On Private Lands In Nebraska, Usa, Peter Skelton, Scott J. Josiah, James W. King, James R. Brandle, Glenn A. Helmers, Charles A. Francis
Adoption Of Riparian Forest Buffers On Private Lands In Nebraska, Usa, Peter Skelton, Scott J. Josiah, James W. King, James R. Brandle, Glenn A. Helmers, Charles A. Francis
Department of Agricultural Leadership, Education, and Communication: Faculty Publications
Pesticide and nutrient runoff from agricultural fields is a socio-environmental problem in the Midwestern United States. Riparian forest buffers (RFBs) are a proven conservation practice that effectively manage this problem, though adoption rates are low. A mail survey was conducted to determine differences between adopter and nonadopter characteristics and attitudes with regard to the use of RFBs. Data were collected from 48 RFB adopters and 261 RFB nonadopters in two Nebraska watersheds. Inferential and multivaririate statistics were used to identify differences between adapter status and producer status groups. About half (50.8%) the respondents were nonproducers. Nonproducers are agricultural landowners not …
Wayne E. Sabbe Arkansas Soil Fertility Studies 2004, Nathan A. Slaton
Wayne E. Sabbe Arkansas Soil Fertility Studies 2004, Nathan A. Slaton
Arkansas Agricultural Experiment Station Research Series
Rapid technological changes in crop management and production require that the research efforts also be presented in an expeditious manner. The contributions of soil fertility and fertilizers are major production factors in all Arkansas crops. The studies described within will allow producers to compare their practices with the university’s research efforts. Additionally, soil test data and fertilizer sales are presented to allow comparisons among years, crops, and other areas within Arkansas.
Deep Drainage Is It For Me? Workshop Manual For Participants, Richard Odonnell
Deep Drainage Is It For Me? Workshop Manual For Participants, Richard Odonnell
Agriculture reports
A Million Hectares for the Future. This workshop forms part of a series of workshops dealing with dryland salinity and options to manage it. All of the workshops have the common theme of identifying the risk at the catchment and farm level, assessing the potential consequences if the risk is not managed and determining the course of action to be taken. You will be able to determine the course of action based on your specific circumstances and goals. There is no one recipe that is suited to all situations.
Glossary Of Terms For Use With The 'A Million Hectares For The Future' Salinity Management Workshops, Rebecca Heath, Paul Raper
Glossary Of Terms For Use With The 'A Million Hectares For The Future' Salinity Management Workshops, Rebecca Heath, Paul Raper
Agriculture reports
This Glossary has been developed as part of the GRDC/NDSP-funded, 'A Million Hectares for the Future' project with support and input from key personnel from the Department of Agriculture, Western Australia.
The Reflection Of Karst In The Online Mirror: A Survey Within Scientific Databases, 1960-2005, Lee J. Florea, Beth Fratesi, Todd A. Chavez
The Reflection Of Karst In The Online Mirror: A Survey Within Scientific Databases, 1960-2005, Lee J. Florea, Beth Fratesi, Todd A. Chavez
Academic Resources Faculty and Staff Publications
The field of cave and karst science is served by a literature that is dispersed across far-flung topical journals, government publications, and club newsletters. As part of an inter-institutional project to globalize karst information (KIP, the Karst Information Portal), the USF Library undertook a structured battery of literature searches to map the domain of karst literature. The study used 4,300 individual searches and four literature databases: GeoRef, BIOSIS, Anthropology Plus, and GPO Access. The searches were based on a list of 632 terms including 321 karst-related keywords culled from three leading encyclopedias and glossaries of cave and karst science. An …
Tapeworms Of Elasmobranchs (Part I) A Monograph On The Lecanicephalidea (Platyhelminthes, Cestoda), Kirsten Jensen
Tapeworms Of Elasmobranchs (Part I) A Monograph On The Lecanicephalidea (Platyhelminthes, Cestoda), Kirsten Jensen
Bulletin of the University of Nebraska State Museum
This represents the first monographic and phylogenetic treatment of the order Lecanicephalidea. The main objective was to treat the Lecanicephalidea at the generic level, while providing information on morphology, taxonomic history, phylogenetic relationships, geographic distribution, and host associations of the group. Following an introduction to the morphology of the Lecanicephalidea, the phylogenetic placement of the group is addressed. This is followed by a review of the taxonomic history of the group and relationships within, including summaries of 29 previously used classification schemes. Despite the generic focus of this study, the taxonomic status of 137 previously recognized lecanicephalidean species was evaluated, …
Iron In The Sargasso Sea (Bermuda Atlantic Time-Series Study Region) During Summer: Eolian Imprint, Spatiotemporal Variability, And Ecological Implications, Peter N. Sedwick, T. M. Church, A. R. Bowie, C. M. Marsay, S. J. Ussher, K. M. Achilles, P. J. Lethaby, R. J. Johnson, M. M. Sarin, D. J. Mcgillicuddy
Iron In The Sargasso Sea (Bermuda Atlantic Time-Series Study Region) During Summer: Eolian Imprint, Spatiotemporal Variability, And Ecological Implications, Peter N. Sedwick, T. M. Church, A. R. Bowie, C. M. Marsay, S. J. Ussher, K. M. Achilles, P. J. Lethaby, R. J. Johnson, M. M. Sarin, D. J. Mcgillicuddy
OES Faculty Publications
We report iron measurements for water column and aerosol samples collected in the Sargasso Sea during July-August 2003 (summer 2003) and April-May 2004 (spring 2004). Our data reveal a large seasonal change in the dissolved iron (dFe) concentration of surface waters in the Bermuda Atlantic Time-series Study region, from ∼1-2nM in summer 2003, when aerosol iron concentrations were high (mean 10 nmol/m-3), to ∼0.1-0.2nM in spring 2004, when aerosol iron concentrations were low (mean 0.64 nmol/m-3). During summer 2003, we observed an increase of ∼0.6nM in surface water dFe concentrations over 13 days, presumably due to …
Greenough Region Catchment Appraisal, Angela Stuart-Street, M Clarke
Greenough Region Catchment Appraisal, Angela Stuart-Street, M Clarke
Resource management technical reports
This report discusses a range of options for the Greenough region, which is comprised of eight shires including the Shires of Northampton, Chapman Valley, Mullewa, Greenough, Morawa, Irwin, Mingenew and Three Springs, and also the city of Geraldton. A range of options for reducing land degradation is discussed. Factors such as soil type, annual rainfall, enterprise mix and financial structure are also considered.
Salinity Investment Framework : Agricultural Land And Infrastructure, Richard J. George Dr, Ross Kingwell, J Hill-Tonkin, R A. Nulsen
Salinity Investment Framework : Agricultural Land And Infrastructure, Richard J. George Dr, Ross Kingwell, J Hill-Tonkin, R A. Nulsen
Resource management technical reports
Greater awareness of the potential impact of salinity has led to increased public and private expenditure. The Salinity Investment Framework was developed to insert rigour and accountability into decision-making processes and guide future development. This report focusses on the economic impact of salinity on private and public land and the infrastructure of areas in Western Australia, including towns, railway systems, roads and the like.
Natural Resource Management Issues For The South Coast Regional Strategy, B Nicholas
Natural Resource Management Issues For The South Coast Regional Strategy, B Nicholas
Resource management technical reports
This report has been prepared by the Agricultural Resource Management Program of the Department of Agriculture to assist SCRIPT (South Coast Regional Initiative Planning Team) in preparing the regional strategy. It records the key natural resource management issues threatening agricultural land on the south coast of Western Australia. Managing agricultural land effectively should be a priority in reducing the risks of land degradation on all assets-productive agricultural land, biodiversity and waterways.
Agricultural Resource Priorities And Recommendations For The Avon River Basin Natural Resource Management Strategy, Paul D. Galloway, C E. Mcconnell, D W. Cummins, K Ohlsen
Agricultural Resource Priorities And Recommendations For The Avon River Basin Natural Resource Management Strategy, Paul D. Galloway, C E. Mcconnell, D W. Cummins, K Ohlsen
Resource management technical reports
This report for the Avon Natural Resource Management Strategy provides an assessment of the current status of land resources throughout the Avon River Basin in Western Australia. It identifies the sub-regions and landscape components of the area and the land resource assets. The greatest threats are salinity, soil acidification, subsurface compaction, waterlogging, water and wind erosion, and biosecurity.
Upper Yilgarn Catchment Appraisal 2005, Keith Ohlsen, Susan Murphy-White
Upper Yilgarn Catchment Appraisal 2005, Keith Ohlsen, Susan Murphy-White
Resource management technical reports
Soil degradation on farmland reduces agricultural production and will often lead to damage to natural resources such as remnant vegetation and waterways, as well as to infrastructure, including roads and townsites. This report provides current information on the land degradation status for the Upper Yilgarn Catchment area in Western Australia by outlining: condition of the soils, hydrology, natural vegetation, farming systems and agricultural production and risks to natural resources.
Avon Hotham Catchment Appraisal 2005, S Sharafi, H Lauk, Paul Galloway
Avon Hotham Catchment Appraisal 2005, S Sharafi, H Lauk, Paul Galloway
Resource management technical reports
This report summarises current information on risks and impacts to agricultural production and natural resources within the Avon Hotham study area. It then identifies suitable options to manage such risks. The Avon Hotham study area is 1.9 million hectares and is made up of three sub catchments: West Avon, South Avon and Hotham, in south west Western Australia. Among the risks and impacts discussed are rainfall, surface drainage; major land degredation hazards are subsurface compaction and acidification.
Silcrete Hardpan In The North-Eastern Wheatbelt : Hydrological Implications For Oil Mallees, D L. Bennett, Russell Speed, Adrian Goodreid, Peter Taylor
Silcrete Hardpan In The North-Eastern Wheatbelt : Hydrological Implications For Oil Mallees, D L. Bennett, Russell Speed, Adrian Goodreid, Peter Taylor
Resource management technical reports
Silcrete is a brittle, intensely indurated rock comprising primarily quartz grains cemented with siliceous allophane. It occurs at 1.5 to 7 metres deep and is often several metres thick and extremely hard, requiring excavation. This Report discusses the extent of silcrete layers in the north-eastern wheatbelt area of Western Australia, the effects of silcrete on water absorption by the soil, and the effects of this physical obstacle on the growth and expansion of oil mallee trees of the region.
Land Evaluation Standards For Land Resource Mapping : Assessing Land Qualities And Determining Land Capability In South-Western Australia, Dennis Van Gool, Peter J. Tille, Geoff Allen Moore
Land Evaluation Standards For Land Resource Mapping : Assessing Land Qualities And Determining Land Capability In South-Western Australia, Dennis Van Gool, Peter J. Tille, Geoff Allen Moore
Resource management technical reports
This report describes the standard method for attributing and evaluating conventional land resource survey maps in the south-west agriculture region of Western Australia so that strategic decisions about the management, development and conservation of land resources can be based on the best information available. The standards described are similar to the land suitability assessment (stage one of the two stage) methods described by the Food and Agriculture Organisation (FAO, 1976, 1983).
Response Of Sagebrush Steppe Species To Elevated Co2 And Soil Temperature, Melissa S. Lucash, Blake Farnsworth, William E. Winner
Response Of Sagebrush Steppe Species To Elevated Co2 And Soil Temperature, Melissa S. Lucash, Blake Farnsworth, William E. Winner
Environmental Science and Management Faculty Publications and Presentations
Elevated atmospheric CO2 may cause long-term changes in the productivity and species composition of the sagebrush steppe. Few studies, however, have evaluated the effects of increased CO2 on growth and physiology of species important to this ecosystem. Since the response of plants to elevated CO2 may be limited by environmental factors, soil temperature was also examined to determine if low soil temperatures limit CO2 response. To determine how CO2 and soil temperature affect the growth of species native to the sagebrush steppe, bottlebrush squirreltail [Elymus elymoides (Raf.) Swezey], Thurber needlegrass (Stipa thurberiana Piper), …
Wagin-Woodanilling (Zone 5) : Catchment Appraisal 2005, K Ohlsen, T Schulz, T W. Mathwin, Gina Pemberton, Henry Brockman, J Firth, Mitchell Davies, Heather M. Percy
Wagin-Woodanilling (Zone 5) : Catchment Appraisal 2005, K Ohlsen, T Schulz, T W. Mathwin, Gina Pemberton, Henry Brockman, J Firth, Mitchell Davies, Heather M. Percy
Resource management technical reports
The aim of this report is to assess the current extent of salinity and other natural resource degradation issues and provide landholders with the best current management options to address natural resource management issues and enhance sustainable agricultural production.
Step Workshops - Guide For Facilitators, Department Of Agriculture And Food, Western Australia
Step Workshops - Guide For Facilitators, Department Of Agriculture And Food, Western Australia
Agriculture reports
The STEP workshops can be run as independent modules or as part of the ?A Million Hectares for the Future? workshop series of which the overarching learning outcome is: Participants will be able to identify and make informed decisions to profitably manage salinity on their farms. Outlines the preferred pathway for the modules in the Million Hectares for the Future series.
Goodlands Oil Mallee Study : Drill Completion And Preliminary Hydrogeological Interpretation, D L. Bennett, Russell John Speed, Peter Taylor, Joint Venture Agroforestry Program (Australia), Western Australia. Department Of Conservation And Land Management
Goodlands Oil Mallee Study : Drill Completion And Preliminary Hydrogeological Interpretation, D L. Bennett, Russell John Speed, Peter Taylor, Joint Venture Agroforestry Program (Australia), Western Australia. Department Of Conservation And Land Management
Resource management technical reports
No abstract provided.