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Articles 16171 - 16200 of 302422

Full-Text Articles in Physical Sciences and Mathematics

Phenotypic Variation Within Local Populations Of Meadow Fescue Shows Significant Associations With Allele Frequencies At Aflp Loci, S. Fjellheim, Å. B. Blomlie, P. Marum, O. A. Rognli Mar 2023

Phenotypic Variation Within Local Populations Of Meadow Fescue Shows Significant Associations With Allele Frequencies At Aflp Loci, S. Fjellheim, Å. B. Blomlie, P. Marum, O. A. Rognli

IGC Proceedings (1993-2023)

To identify markers useful for Marker Assisted Selection (MAS), mapping families are usually constructed and used for Quantitative Trait Loci (QTL) mapping. Association mapping offers an alternative strategy for marker development using already characterized germplasm, preferably from natural populations. Simultaneous phenotypic and molecular screening of gene bank accessions can reveal associations between molecular marker alleles and phenotypic traits, and lead to a more targeted construction of mapping families for fine-mapping. In this investigation, we combine molecular (AFLP) and phenotypic data of 15 Norwegian local populations and 5 Nordic cultivars in order to identify markers associated with phenotypic traits of interest.

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Diversity Of Diet Composition Decreases With Conjoint Grazing Of Cattle With Sheep And Goats, A. M. Nicol, M. B. Soper, A. Stewart Mar 2023

Diversity Of Diet Composition Decreases With Conjoint Grazing Of Cattle With Sheep And Goats, A. M. Nicol, M. B. Soper, A. Stewart

IGC Proceedings (1993-2023)

Conjoint or mixed grazing can affect the diet selected by each species (Nicol & Collins, 1990). Diet similarity coefficients are often used to compare pairs of diets (Krebs, 1999). However this approach is awkward when a number of contrasts are required in a multifactorial comparison. Species diversity is a descriptor of a particular environment. Many models provide an estimate of species diversity, the most common of these being a log-normal distribution (Tokeshi, 1996). We tested whether this model could be applied to dietary components selected from a pasture, and thus provide a coefficient of dietary diversity for the individual diets …

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A Simple Vegetation Criterion (Ndf Content) May Account For Diet Choices Of Cattle Between Forages Varying In Maturity Stage And Physical Accessibility, Cécile Ginane, R. Baumont Mar 2023

A Simple Vegetation Criterion (Ndf Content) May Account For Diet Choices Of Cattle Between Forages Varying In Maturity Stage And Physical Accessibility, Cécile Ginane, R. Baumont

IGC Proceedings (1993-2023)

The management of extensively grazed pastures requires an understanding and prediction of the diet choices of herbivores grazing on vegetation that is qualitatively (maturity stage) and quantitatively (biomass, sward height) heterogeneous. The Optimal Foraging Theory (OFT, Stephens & Krebs, 1986), bases its predictions on the relative energy intake rate (EIR) of forages. However, as EIRs are difficult to assess at pasture and are subject to wide intra- and inter-individual variations, another vegetation criterion was sought (accessibility, quality), by-passing the animal's influence, to predict cattle diet choices quantitatively.

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Spatial Scale Of Heterogeneity Affects Diet Choice But Not Intake In Beef Cattle, S. Mark Rutter, J. E. Cook, K. L. Young, R. A. Champion Mar 2023

Spatial Scale Of Heterogeneity Affects Diet Choice But Not Intake In Beef Cattle, S. Mark Rutter, J. E. Cook, K. L. Young, R. A. Champion

IGC Proceedings (1993-2023)

Previous research has shown that sheep (Champion et al., 1998) and dairy cattle (Nuthall et al., 2000) have a partial preference for clover of 70%, and achieve higher daily intakes when offered grass and clover as separate but adjacent monocultures compared with animals grazing mixed swards. This intake benefit could be utilised to increase intake and production on farms by grazing from adjacent strips of the two herbages. This study aimed to establish the minimum strip width required to achieve the benefits of monocultures.

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Is Biodiversity Declining In The Traditional Haymeadows Of Skye And Lochalsh, Scotland?, G. E. D. Tiley, D. G. L. Jones Mar 2023

Is Biodiversity Declining In The Traditional Haymeadows Of Skye And Lochalsh, Scotland?, G. E. D. Tiley, D. G. L. Jones

IGC Proceedings (1993-2023)

Species-rich haymeadows have developed on crofts in the Isle of Skye and Lochalsh Districts of north-west Scotland as a result of a century or more of traditional land use. This has involved long rotations of late cutting for hay with aftermath grazing by cattle and short breaks for cropping. The traditional haymeadows are increasingly coming under threat from changes taking place in the countryside. A survey of the main haymeadows still remaining in Skye and Lochalsh was carried out during 2003 to assess the current botanical composition, management and conservation value, and to compare with earlier surveys.

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Forage Development In The Nepal Mid-Hills: New Perspectives, A. D. Robertson Mar 2023

Forage Development In The Nepal Mid-Hills: New Perspectives, A. D. Robertson

IGC Proceedings (1993-2023)

Nepali hill farming communities are typically poor and remote, and are currently severely affected by conflict. The challenge is to define simple approaches which can generate results within this context. Livestock are central to livelihoods and to the sustainability of farming, with rain-fed agriculture dependent on inputs of manure-based compost. Stall feeding has increased dramatically with the adoption of community forestry and general preclusion of grazing. A broad landscape approach to forage development is increasingly being adopted, with concurrent on-farm interventions, such as intercropping and back-yard forage, and off-farm interventions, such as landslide stabilisation with forages, development of forest understory, …

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Alternative Land Use Options For Philippine Grasslands: A Bioeconomic Modeling Approach Using The Wanulcas Model, D. B. Magcale-Macandog, E. Abucay, P. A. B. Ani Mar 2023

Alternative Land Use Options For Philippine Grasslands: A Bioeconomic Modeling Approach Using The Wanulcas Model, D. B. Magcale-Macandog, E. Abucay, P. A. B. Ani

IGC Proceedings (1993-2023)

In the Philippines, pure grasslands occupy 1.8 million ha and another 10.8 million ha (33% of the country’s total land area) is under extensive cultivation mixed with grasslands and scrub. Most of these grasslands are under-utilised and dominated by Imperata cylindrica. Imperata grasslands generally represent areas of degraded soils that are acidic, low in organic matter and susceptible to erosion. However, conversion of these grassland areas into upland farms planted to annual crops and perennial trees is proliferating at a fast rate. This is triggered by the interacting factors of rapidly increasing population, the system of landholding, scarcity of …

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How To Simplify Tools For Natural Grassland Characterisation Based On Biological Measures Without Losing Too Much Information?, P. Ansquer, P. Cruz, J. P. Theau, E. Lecloux, M. Duru Mar 2023

How To Simplify Tools For Natural Grassland Characterisation Based On Biological Measures Without Losing Too Much Information?, P. Ansquer, P. Cruz, J. P. Theau, E. Lecloux, M. Duru

IGC Proceedings (1993-2023)

In marginal areas, such as the Pyrenees, natural grasslands are the only available resource for livestock feeding. Despite this, there is a lack of simple and efficient tools for advisers to aid the management of the complex vegetation of these grasslands. Therefore, we tested an approach derived from functional ecology, to construct such tools: using biological traits to inform on the agronomic characteristics and the way farmers’ practices act on them (Ansquer et al., 2004). Nevertheless, the required protocol of measurement is still time-consuming and difficult. In this paper, we test different ways of simplifying this protocol by reducing …

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Herders And Wetland Degradation In Northern Cameroon, E. Tedonkeng Pamo, F. Tendonkeng, J. R. Kana Mar 2023

Herders And Wetland Degradation In Northern Cameroon, E. Tedonkeng Pamo, F. Tendonkeng, J. R. Kana

IGC Proceedings (1993-2023)

Livestock rearing in Northern Cameroon is carried out under two majors systems: the nomadic and the transhumance production systems (Pamo & Pamo, 1991). Nomadism is the practice of wandering from place to place, while transhumance involves seasonal displacement of flocks from one area to another by herders. These production systems involved large grazing areas, which may encompass different ecosystems. The Yaére, the only wetland of the northern Cameroon, is the major dry season grazing lands for livestock and wildlife. The main characteristic of this wetland is that the whole area is excluded from grazing during the growing season as a …

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New Far-Infrared Laser Frequencies Generated By Ch3cn, Cd3cn, 13ch3i, Cd3i, And 13cd3i, Michael Jackson Mar 2023

New Far-Infrared Laser Frequencies Generated By Ch3cn, Cd3cn, 13ch3i, Cd3i, And 13cd3i, Michael Jackson

All Faculty Scholarship for the College of the Sciences

Heterodyne techniques have been used to experimentally determine, for the first time, the frequencies for nineteen laser emissions ranging from 264 to 984 GHz. These laser emissions were generated by optically pumping either CH3CN, CD3CN, 13CH3, CD3I, or 13CD3I with a CO2 laser. This includes the newly discovered 566.325-μ m laser emission from optically pumped 13CD3I. The fractional uncertainties with which these frequencies were experimentally determined, up to ± 5 × 10− 7, were of sufficient accuracy to confirm or revise …

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2023 March 23 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University Mar 2023

2023 March 23 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University

Tennessee Climate Office Weekly Drought Summaries

No abstract provided.

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Partnering To Advance Equity In Coastal Resilience: Lessons Learned For Research And Practice Collaborations For On-The-Ground Projects, Marina Saitgalina, Jennifer Whytlaw, Nicole Hutton, Tom Allen, Joshua Behr, Wie Yusuf Mar 2023

Partnering To Advance Equity In Coastal Resilience: Lessons Learned For Research And Practice Collaborations For On-The-Ground Projects, Marina Saitgalina, Jennifer Whytlaw, Nicole Hutton, Tom Allen, Joshua Behr, Wie Yusuf

Presentations, Lectures, Posters, Reports

No abstract provided.

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Health And Safety Effects Of Airborne Soil Dust In The Americas And Beyond, Daniel Q. Tong, Thomas E. Gill, William A. Sprigg, Robert Scott Van Pelt, Alexander Baklanov, Bridget Marie Barker, Jesse E. Bell, Juan Castillo, Santiago Gassó, Cassandra Gaston, Amit U. Raysoni Mar 2023

Health And Safety Effects Of Airborne Soil Dust In The Americas And Beyond, Daniel Q. Tong, Thomas E. Gill, William A. Sprigg, Robert Scott Van Pelt, Alexander Baklanov, Bridget Marie Barker, Jesse E. Bell, Juan Castillo, Santiago Gassó, Cassandra Gaston, Amit U. Raysoni

School of Earth, Environmental, and Marine Sciences Faculty Publications and Presentations

Risks associated with dust hazards are often underappreciated, a gap between the knowledge pool and public awareness that can be costly for impacted communities. This study reviews the emission sources and chemical, physical, and biological characteristics of airborne soil particles (dust) and their effects on human and environmental health and safety in the Pan-American region. American dust originates from both local sources (western United States, northern Mexico, Peru, Bolivia, Chile, and Argentina) and long-range transport from Africa and Asia. Dust properties, as well as the trends and interactions with criteria air pollutants, are summarized. Human exposure to dust is associated …

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Search For Heavy Neutral Leptons Using Tau Lepton Decays At Babar, J. P. Lees, V. Poireau, V. Tisserand, E. Grauges, A. Palano, G. Eigen, D. N. Brown, Yu. G. Kolomensky, M. Fritsch, H. Koch, R. Cheaib, C. Hearty, T. S. Mattison, J. A. Mckenna, R. Y. So, V. E. Blinov, A. R. Buzykaev, V. P. Druzhinin, E. A. Kravchenko, Milind Purohit, Et. Al. Mar 2023

Search For Heavy Neutral Leptons Using Tau Lepton Decays At Babar, J. P. Lees, V. Poireau, V. Tisserand, E. Grauges, A. Palano, G. Eigen, D. N. Brown, Yu. G. Kolomensky, M. Fritsch, H. Koch, R. Cheaib, C. Hearty, T. S. Mattison, J. A. Mckenna, R. Y. So, V. E. Blinov, A. R. Buzykaev, V. P. Druzhinin, E. A. Kravchenko, Milind Purohit, Et. Al.

Faculty Publications

This article presents a model-independent search for an additional, mostly sterile, heavy neutral lepton (HNL), that is capable of mixing with the Standard Model τ neutrino with a mixing strength of |Uτ4| 2, corresponding to the absolute square of the extended Pontecorvo-Maki-Nakagawa-Sakata matrix element. Data from the BABAR experiment, with a total integrated luminosity of 424 fb−1, are analyzed using a kinematic approach that makes no assumptions on the model behind the origins of the HNL, its lifetime or decay modes. No significant signal is found. Upper limits on |Uτ4|2 at the 95% …

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The Investigation Of Flowering Control In Late/Rare Flowering Lolium Perenne, S. Byrne, I. S. Donnison, L. J. Mur, E. Guiney Mar 2023

The Investigation Of Flowering Control In Late/Rare Flowering Lolium Perenne, S. Byrne, I. S. Donnison, L. J. Mur, E. Guiney

IGC Proceedings (1993-2023)

Flowering in Lolium perenne (perennial ryegrass) results in reduced digestibility and its inhibition would enhance forage quality. Flowering regulation has been well studied in Arabidopsis thaliana (Simpson and Dean, 2002) and orthologs of Arabidopsis flowering genes underlying heading date Quantitative Trait Loci (QTL) have been identified in rice (Yano, M et al., 2000). However it is not clear yet how universally applicable such studies are to Lolium. The project goals are to characterise the gene expression profiles of late/rare flowering L. perenne plants to determine factors affecting flowering and to map the genes involved in the flowering process. Initial …

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Eating Biodiversity: Investigating The Links Between Grassland Biodiversity And Quality Food Production, A. Hopkins, H. Buller, C. Morris, J. D. Wood Mar 2023

Eating Biodiversity: Investigating The Links Between Grassland Biodiversity And Quality Food Production, A. Hopkins, H. Buller, C. Morris, J. D. Wood

IGC Proceedings (1993-2023)

Modern food production systems are generally detrimental to biodiversity, and the widespread loss of species-diverse grassland as a consequence of intensive farming methods is well documented. Since the 1980s, a range of policy measures and financial incentives for farmers have been introduced in Europe to halt (and in some cases, reverse) this trend, primarily to meet environmental objectives of species and habitat conservation and landscape protection. Biodiversity, where associated with agricultural production, has largely been regarded as a positive 'externality' to the process of food production; a ‘product’ which benefits wider society without necessarily conferring an agricultural benefit to the …

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Do Species And Functional Diversity Indices Reflect Changes In Grazing Regimes And Climatic Conditions In Northeastern Spain?, F. De Bello, J. Leps, M. T. Sebastià Mar 2023

Do Species And Functional Diversity Indices Reflect Changes In Grazing Regimes And Climatic Conditions In Northeastern Spain?, F. De Bello, J. Leps, M. T. Sebastià

IGC Proceedings (1993-2023)

Understanding the mechanisms that maintain biodiversity in various ecosystems enables the development of management practices that prevent degradation (Canals & Sebastia, 2000). Each diversity index reflects some compositional properties and could be influenced differently by stress and disturbance factors (Magurran, 2004). In this study, we aim to reveal 1) which management practices and environmental factors affect biodiversity in rangelands of northeastern Spain and 2) the relationship between species diversity and functional diversity (SD and FD).

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The Biodiversity Value Of ‘Improved’ And ‘Unimproved’ Saline Agricultural Land And Adjacent Remnant Vegetation In South Australia, M. L. Hebart, N. J. Edwards, E. A. Abraham, A. D. Craig Mar 2023

The Biodiversity Value Of ‘Improved’ And ‘Unimproved’ Saline Agricultural Land And Adjacent Remnant Vegetation In South Australia, M. L. Hebart, N. J. Edwards, E. A. Abraham, A. D. Craig

IGC Proceedings (1993-2023)

Since European settlement of the Upper South-east of South Australia, the distribution and abundance of much of the native flora and fauna of the region has been affected by clearing of native vegetation and drainage of wetlands to facilitate agricultural production. Only 8.3% of the original vegetation and less than 7% of the original swamps now remain in the region and much of what is left exists as small isolated remnants (Croft & Carpenter, 1996). Furthermore, as a consequence of the demise of large areas of agriculturally productive lucerne in the late 1970’s and early 1980’s, the rise of saline …

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Soil, Plant And Livestock Interactions In Australian Tropical Savannas, L. P. Hunt, T. Z. Dawes-Gromadzki Mar 2023

Soil, Plant And Livestock Interactions In Australian Tropical Savannas, L. P. Hunt, T. Z. Dawes-Gromadzki

IGC Proceedings (1993-2023)

This paper considers the various soil, plant and livestock interactions occurring in Australia’s wet-dry savanna rangelands. These regions are relatively intact compared to most of the world’s rangelands. However there is increasing pressure for more intensive use of the landscape, especially from pastoralism. This potentially threatens landscape health, function and productivity through reduced soil health and a loss of digestible perennial plants, especially given the low soil fertility and highly variable rainfall characteristic of these regions. There is an obvious need for understanding these impacts to devise sustainable management practices that promote soil health and viable perennial plant communities, and …

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Grazing Impacts On Rangeland Condition In Semi-Arid South-Western Africa, A. Rothauge, G. N. Smit, A. L. Abate Mar 2023

Grazing Impacts On Rangeland Condition In Semi-Arid South-Western Africa, A. Rothauge, G. N. Smit, A. L. Abate

IGC Proceedings (1993-2023)

The savannah biome, consisting of a dense herbaceous layer and a relatively open woody layer in competitive balance, constitutes 64% of the land surface of Namibia, an arid country in south-western Africa, and is used mainly for extensive cattle and sheep ranching. About half of the savannah area is affected by dense to moderately dense bush-thickening, resulting in a ten-fold decrease in the rangeland’s grass-based carrying capacity and a concomitant loss in meat production of about US$115 million per year (De Klerk, 2004). Bushencroached areas typically have densities > 2 000 bushes/ha with > 90% belonging to a single species. High grazing …

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A Decision Support System For Rangeland Management In Degrading Environments, R. G. Bennett, F. J. Mitchell Mar 2023

A Decision Support System For Rangeland Management In Degrading Environments, R. G. Bennett, F. J. Mitchell

IGC Proceedings (1993-2023)

The continued viability and productivity of commercial and emerging agriculture in KwaZulu-Natal Province, South Africa, depends on the accurate assessment and sustainable utilization of available natural resources. Sustainability implies that growth and development must take place, and be maintained over time, within the limits set by natural ecosystems. Utilizing an extensive GIS database, field surveys and remote sensing technology, a land assessment decision support system (LADSS) has been developed in an attempt to define these limits for the Province. This system has been developed to assess the appropriate use of existing resources as well as the suitability of current land …

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Marker-Assisted Selection For Fibre Concentration In Smooth Bromegrass, C. Stendal, M. D. Casler, G. Jung Mar 2023

Marker-Assisted Selection For Fibre Concentration In Smooth Bromegrass, C. Stendal, M. D. Casler, G. Jung

IGC Proceedings (1993-2023)

The concentration of neutral detergent fibre is the best single laboratory predictor of voluntary intake potential in forage crops. However, the assay of thousands of plant samples for NDF selection in a breeding program requires a large amount of labour and time, potentially increasing cycle time and reducing the rate of progress. A previous study (Diaby and Casler, 2005) identified 16 random amplified polymorphic DNA (RAPD) markers that were strongly associated with NDF concentration in one or more of four smooth bromegrass (Bromus inermis Leyss) populations. The objective of this study was to validate these associations by implementing marker-assisted …

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Modelling The Encroachment Of Farmhouse Culture On Private Village Pastures And Its Environmental Fall-Out In Northern Western Ghats, India, S. B. Nalavade, K. R. Sahasrabuddhe, A. A. Patwardhan Mar 2023

Modelling The Encroachment Of Farmhouse Culture On Private Village Pastures And Its Environmental Fall-Out In Northern Western Ghats, India, S. B. Nalavade, K. R. Sahasrabuddhe, A. A. Patwardhan

IGC Proceedings (1993-2023)

Tropical India harbours numerous pasturelands across small landholdings ranging up to few hectares which are covered with grass that is suitable as fodder. These grazing lands are commonly known as ‘Gairan’ in urbanised northern Western Ghats mountain tract in Western India). Such grasslands comprise about 20% of the total area of a village (Jodha, 1986), support livestock and supplement the agro-economy of the village. These pasturelands are being replaced by fenced ‘farmhouses’ of the urban elite, resulting in land use changes that caused drastic qualitative and quantitative changes in terms of area, fodder species composition and livestock they …

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Rangeland As A Common Property Resource: Contrasting Insights From Communal Areas Of Central Eastern Cape Province, South Africa, J. E. Bennett, H. R. Barrett Mar 2023

Rangeland As A Common Property Resource: Contrasting Insights From Communal Areas Of Central Eastern Cape Province, South Africa, J. E. Bennett, H. R. Barrett

IGC Proceedings (1993-2023)

In communal areas of South Africa, grazing systems are held under a variety of different common property regimes. However, the social and ecological realities of these communal grazing systems remain poorly understood, particularly with regard to the use of land allocated for crop production. Little is known about how these arable areas are utilised as a common grazing resource but the wide array of tenure arrangements under which they are held suggests that they facilitate some interesting departures from recognised common property systems. A clearer understanding of how common property regimes function at an integrated level in South Africa will …

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Andean Pastures In The Fourth Region Of Chile: Marginal Lands And Vital Spaces For A Transhumance System, T. S. Koné, R. Osorio, J. -M. Fotsing Mar 2023

Andean Pastures In The Fourth Region Of Chile: Marginal Lands And Vital Spaces For A Transhumance System, T. S. Koné, R. Osorio, J. -M. Fotsing

IGC Proceedings (1993-2023)

In the fourth region of Chile, the high Andean pastures between Chile and Argentina are the summer destination for transhumant shepherds and sustain a part of the regional livestock. Since 2000, Chile has prohibited the passage of livestock to Argentina for animal health reasons in spite of official registers indicating that 60 to 75% of the summer transhumance livestock had an Argentine destination. Under those conditions it is questionable whether the Andean Chilean grasslands can absorb the increased pastoral demand without suffering damage. The objective is to provide elements of an answer to this question regarding the distribution and availability …

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Australian Pasture Systems: The Perennial Compromise, L. W. Bell, M. A. Ewing Mar 2023

Australian Pasture Systems: The Perennial Compromise, L. W. Bell, M. A. Ewing

IGC Proceedings (1993-2023)

Dryland salinity, soil acidification and weed herbicide resistance challenge traditional agricultural production systems in south Australia. The pasture component of such systems rely on annuals like Trifolium subterraneum and Medicago spp. Replacing annual with perennial pastures allows some redress of the sustainability challenges, but few well-adapted species are available (Ewing & Dolling 2003). A range of perennial species are under evaluation to supplement current options. Some of these new perennial pastures may need modified production systems that allow full expression of their productive potential, especially when integrated with annual crops including cereals, pulses and oil seeds. Integrated systems rely on …

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Grazing, Biodiversity And Pastoral Vegetation In The South Sudanien Area Of Burkina Faso, E. Botoni-Liehoun, P. Daget Mar 2023

Grazing, Biodiversity And Pastoral Vegetation In The South Sudanien Area Of Burkina Faso, E. Botoni-Liehoun, P. Daget

IGC Proceedings (1993-2023)

Grazing impact on plant diversity is dominated by two contradictory views. In some studies, it has been found to lead to an increase in diversity and in other studies to a decrease associated with dominance of a few species (Nösberger et al., 1998, Hiernaux, 1998). In an Isoberlinia doka forest ecosystem, considered as the climax vegetation in the South Sudanien area of Burkina Faso, a study was carried out to assess the impact of grazing on the diversity of herbaceous species. The Isoberlinia doka forest is one type of South Sudanien savanna. The woody stratum is open and allowed …

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Effects Of Landscape Structure On Plants Species Richness In Small Grassland Remnants In Two Different Landscapes, S. A. O. Cousins, O. Eriksson Mar 2023

Effects Of Landscape Structure On Plants Species Richness In Small Grassland Remnants In Two Different Landscapes, S. A. O. Cousins, O. Eriksson

IGC Proceedings (1993-2023)

There is an increasing interest in using the landscape as the operational scale in many ecological studies. Current species richness in the landscape may be explained by past land use, and habitats may harbour species favoured by an environment that no longer exists. In this study we have included both a landscape scale and a temporal scale. The objective was to explain species pattern and the effect of isolation, habitat size and surrounding land use, and past land use change, on small grassland remnants in rural landscapes.

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Optimization Of The Pasture Resource In Boundary Environments As A Basis For Regional Nature Management, M. V. Rogova Mar 2023

Optimization Of The Pasture Resource In Boundary Environments As A Basis For Regional Nature Management, M. V. Rogova

IGC Proceedings (1993-2023)

In spite of the globalization processes encompassing all spheres of human life and activity, land remains the main resource and provides the feeding source for population and the fodder base for livestock rearing. On the other hand, the activity of local communities can have important global consequences. The study area that includes Lake Baikal’s western shore (East Siberia) and the lake’s largest island exemplifies the traditional type of nature management, namely, grazing management which was originated by an indigenous population within the context of suitable natural climatic conditions. This investigation furnished an opportunity to make an assessment of the status …

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The Effect Of Alternative Soil Amendments On The Botanical Composition, Basal Cover, Dry Matter Production And Chemical Properties Of Re-Vegetated Mine Land, Wayne F. Truter, N. F. G. Rethman Mar 2023

The Effect Of Alternative Soil Amendments On The Botanical Composition, Basal Cover, Dry Matter Production And Chemical Properties Of Re-Vegetated Mine Land, Wayne F. Truter, N. F. G. Rethman

IGC Proceedings (1993-2023)

Coal mining impacts large grassland areas of the Mpumalanga Province of South Africa. To mitigate such impacts, it is imperative to restore the once productive soils to the best possible condition. The revegetation of mine land presents a particular challenge. Soils being rehabilitated are often acidic and nutrientdeficient, which are major limiting factors in re-vegetation programmes. Conventional methods of liming and inorganic fertilisation have been used to improve the productivity of impacted soils. In the past few years the use of a coal combustion by-product, class F fly ash, and an organic material, such as sewage sludge, have demonstrated the …

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