Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Kentucky (53)
- University of Nebraska - Lincoln (50)
- University of South Florida (34)
- Utah State University (20)
- University of Texas Rio Grande Valley (15)
-
- Western Kentucky University (7)
- Old Dominion University (6)
- Portland State University (6)
- University of Arkansas, Fayetteville (6)
- University of New Mexico (6)
- City University of New York (CUNY) (5)
- Missouri University of Science and Technology (5)
- Montclair State University (5)
- University of Dar es Salaam (5)
- University of Nevada, Las Vegas (5)
- Claremont Colleges (4)
- Department of Primary Industries and Regional Development, Western Australia (4)
- Eastern Illinois University (4)
- Louisiana State University (4)
- Michigan Technological University (4)
- The University of Southern Mississippi (4)
- University of South Carolina (4)
- University of Texas at El Paso (4)
- Boise State University (3)
- East Tennessee State University (3)
- Fort Hays State University (3)
- University of North Dakota (3)
- West Virginia University (3)
- Dartmouth College (2)
- Edith Cowan University (2)
- Keyword
-
- Biodiversity (7)
- Nitrogen (6)
- Climate change (5)
- Diversity (5)
- GIS (5)
-
- Grazing (5)
- Bacteria (4)
- Biogeochemistry (4)
- Biogeography (4)
- Carbon (4)
- Conservation (4)
- Ecology (4)
- Evolution (4)
- Karst (4)
- Paleoecology (4)
- Remote Sensing (4)
- Remote sensing (4)
- Stable isotopes (4)
- Tanzania (4)
- Western Australia (4)
- Animals (3)
- Bats (3)
- Biological Sciences (3)
- Cave (3)
- Caves (3)
- China (3)
- Geophysics (3)
- Gulf of Mexico (3)
- Habitat (3)
- Hydrology (3)
- Publication Year
- Publication
-
- IGC Proceedings (1977-2023) (44)
- United States Geological Survey: Staff Publications (28)
- International Journal of Speleology (23)
- Memorandum (13)
- School of Earth, Environmental, & Marine Sciences Faculty Publications (11)
-
- Theses and Dissertations (11)
- Masters Theses (7)
- School of Natural Resources: Dissertations, Theses, and Student Research (7)
- USF Tampa Graduate Theses and Dissertations (7)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (5)
- Graduate Theses and Dissertations (5)
- Tanzania Journal of Science (5)
- Department of Earth and Environmental Studies Faculty Scholarship and Creative Works (4)
- Earth and Planetary Sciences ETDs (4)
- Mammoth Cave Research Symposia (4)
- Master's Theses (4)
- Open Access Theses & Dissertations (4)
- UNLV Theses, Dissertations, Professional Papers, and Capstones (4)
- Daugherty Water for Food Global Institute: Faculty Publications (3)
- Department of Earth and Atmospheric Sciences: Faculty Publications (3)
- Dissertations (3)
- Electronic Theses and Dissertations (3)
- Faculty Publications (3)
- Geology Faculty Publications and Presentations (3)
- Graduate Theses, Dissertations, and Problem Reports (ETD) (3)
- LSU Master's Theses (3)
- Master's Theses or Doctor of Nursing Practice (3)
- Publications and Research (3)
- Theses and Dissertations--Geography (3)
- United States Geological Survey: Publications (3)
- Publication Type
- File Type
Articles 91 - 120 of 333
Full-Text Articles in Entire DC Network
Production Potential Of South America Grasslands, G. E. Maraschin
Production Potential Of South America Grasslands, G. E. Maraschin
IGC Proceedings (1977-2023)
Grasslands exist all over the world under a wide range of climates, soil types, topography conditions and seasonality. The South America grasslands cover a wide range of ecosystems and vegetaion types, going from desert areas to steppes, subhumid temperate, subtropical and tropical savannas embodying also portions of the tropical rain forest environment, and represent one of the Earth’s largest expanses of natural rangelands (Oesterheld et al., 1992). They represent developed ecosystems requiring acquaintance to accept sound agronomic and ecological activities. The diversity of vegetation determined by the latitudes 6oN, down to the southern most tip of the continent …
Matching Up The Complexity Of Grassland Of Inner Mongolia — On The Methodology Issues, Yisheng Zheng
Matching Up The Complexity Of Grassland Of Inner Mongolia — On The Methodology Issues, Yisheng Zheng
IGC Proceedings (1977-2023)
No abstract provided.
Multiple Use Management On Canadian Publicly Managed Rangeland, B. Kirychuk, R. Gaube, S. Kushreshtha, G. Pearson
Multiple Use Management On Canadian Publicly Managed Rangeland, B. Kirychuk, R. Gaube, S. Kushreshtha, G. Pearson
IGC Proceedings (1977-2023)
No abstract provided.
Effects Of Acid Deposition And Changing Climate On The Hydrochemistry And Critical Loads Of Watersheds In The Adirondack Region Of New York, Shuai Shao
Dissertations - ALL
Despite decreases in acidic deposition since the 1970s, the recovery of surface waters from acidification has been limited primarily due to the depletion of exchangeable base cations, net mineralization of organic sulfur and nitrogen and release of previously retained SO42- and NO3-, and increases in concentrations of naturally occurring organic acids from soil. The future recovery of stream chemistry from acidic deposition may be altered by projected increases in temperature and precipitation associated with a changing climate. The goals of this study were to conduct a modeling analysis of the response of soils and streams in the Adirondack Park, New …
Months-Long Spike In Aqueous Arsenic Following Domestic Well Installation And Disinfection: Short- And Long-Term Drinking Water Quality Implications, M. L. Erickson, E. D. Swanner, Brady A. Ziegler, J. R. Havig
Months-Long Spike In Aqueous Arsenic Following Domestic Well Installation And Disinfection: Short- And Long-Term Drinking Water Quality Implications, M. L. Erickson, E. D. Swanner, Brady A. Ziegler, J. R. Havig
Earth and Environmental Geosciences Faculty Research
Exposure to high concentration geogenic arsenic via groundwater is a worldwide health concern. Well installation introduces oxic drilling fluids and hypochlorite (a strong oxidant) for disinfection, thus inducing geochemical disequilibrium. Well installation causes changes in geochemistry lasting 12 + months, as illustrated in a recent study of 250 new domestic wells in Minnesota, north-central United States. One study well had extremely high initial arsenic (1550 µg/L) that substantially decreased after 15 months (5.2 µg/L). The drilling and development of the study well were typical and ordinary; nothing observable indicated the very high initial arsenic concentration. We hypothesized that oxidation of …
Effect Of Salinity Stress On Seed Germination In Hordeum Vulgare, A. Tavili, M. Beniaz, E. Shahriary, H. Khedri Gharvibvand
Effect Of Salinity Stress On Seed Germination In Hordeum Vulgare, A. Tavili, M. Beniaz, E. Shahriary, H. Khedri Gharvibvand
IGC Proceedings (1977-2023)
No abstract provided.
Invasive Grassland‐Rangeland Plants Of China And The United States Of America, John H. Brock, Jinguo Wu
Invasive Grassland‐Rangeland Plants Of China And The United States Of America, John H. Brock, Jinguo Wu
IGC Proceedings (1977-2023)
No abstract provided.
Microplankton Dynamics In The River-Dominated Mississippi Bight, Adam D. Boyette
Microplankton Dynamics In The River-Dominated Mississippi Bight, Adam D. Boyette
Dissertations
The Mississippi Bight (MSB) is a river-dominated continental margin influenced by multiple large river systems, including the Mississippi River, Alabama and Tombigbee rivers via Mobile Bay, and numerous smaller rivers, creeks, and bayous. This is part of a biologically-rich ecosystem that supports the second largest fishery industry by volume in the United States. Despite our understanding of the linkages between primary production with higher trophic levels, there remains limited studies quantifying these trophic interactions in this system. Microplankton (µm) community dynamics and trophic connectivity between primary producers and heterotrophic protists represent a critical nexus influencing overall biological productivity in this …
The Agronomic Characteristics Of Agropyron Spp. Germplasm In Semi‐Steppe Region Of Iran, Mansour Mesdaghi, Masoume Amirkhani
The Agronomic Characteristics Of Agropyron Spp. Germplasm In Semi‐Steppe Region Of Iran, Mansour Mesdaghi, Masoume Amirkhani
IGC Proceedings (1977-2023)
No abstract provided.
Geo-Spatial Modeling Of Carbon Sequestration Assessment In Date Palm, Abu Dhabi: An Integrated Approach Of Fieldwork, Remote Sensing, And Gis, Basam Saeed Dahy
Geo-Spatial Modeling Of Carbon Sequestration Assessment In Date Palm, Abu Dhabi: An Integrated Approach Of Fieldwork, Remote Sensing, And Gis, Basam Saeed Dahy
Dissertations
The United Arab Emirates (UAE) has undertaken huge efforts to green the desert and afforestation projects (planted mainly with date palms) hence, reducing its carbon footprint, which have never been accounted for, because of lack of implemented mechanisms and tools to assess the amount of biomass and carbon stock (CS) sequestered by plants in the country. The purpose of this dissertation is to implement a new approach towards assessing the carbon sequestered by date palm (DP) plantations in Abu Dhabi, in both their biomass compartment as well as the soils under beneath, using geospatial technologies (RS and GIS) assessed by …
Exploiting Common Senses: Sensory Ecology Meets Wildlife Conservation And Management, Laura K. Elmer, Christine L. Madliger, Daniel T. Blumstein, Chris K. Elvidge, Esteban Ernández-Juricic, Andrij Z. Horodysky, Nicholas S. Johnson, Liam P. Mcguire, Ronald R. Swaisgood, Steven J. Cooke
Exploiting Common Senses: Sensory Ecology Meets Wildlife Conservation And Management, Laura K. Elmer, Christine L. Madliger, Daniel T. Blumstein, Chris K. Elvidge, Esteban Ernández-Juricic, Andrij Z. Horodysky, Nicholas S. Johnson, Liam P. Mcguire, Ronald R. Swaisgood, Steven J. Cooke
United States Geological Survey: Staff Publications
Multidisciplinary approaches to conservation and wildlife management are often effective in addressing complex, multi-factor problems. Emerging fields such as conservation physiology and conservation behaviour can provide innovative solutions and management strategies for target species and systems. Sensory ecology combines the study of ‘how animals acquire’ and process sensory stimuli from their environments, and the ecological and evolutionary significance of ‘how animals respond’ to this information. We review the benefits that sensory ecology can bring to wildlife conservation and management by discussing case studies across major taxa and sensory modalities. Conservation practices informed by a sensory ecology approach include the amelioration …
Rock Glaciers And Related Cold Rocky Landforms: Overlooked Climate Refugia For Mountain Biodiversity, Stefano Brighenti, Scott Hotaling, Debra S. Finn, Andrew G. Fountain, Masaki Hayashi, David Herbst, Jasmine E. Saros, Lusha M. Tronstad, Constance I. Millar
Rock Glaciers And Related Cold Rocky Landforms: Overlooked Climate Refugia For Mountain Biodiversity, Stefano Brighenti, Scott Hotaling, Debra S. Finn, Andrew G. Fountain, Masaki Hayashi, David Herbst, Jasmine E. Saros, Lusha M. Tronstad, Constance I. Millar
Geology Faculty Publications and Presentations
Mountains are global biodiversity hotspots where cold environments and their associated ecological communities are predicted to be threatened by climate warming. Considerable research attention has been devoted to understanding the ecological effects of alpine glacier and snowfield recession. However, much less attention has been given to identifying climate refugia in mountain ecosystems where present-day environmental conditions will be maintained, at least in the near-term, as other habitats change. Around the world, montane communities of microbes, animals, and plants live on, adjacent to, and downstream of rock glaciers and related cold rocky landforms (CRL). These geomorphological features have been overlooked in …
Environmental Controls On The Spatial Distribution Of Greenfin Darters And Biodiversity In The Blue Ridge Mountains, Dri Tattersfield
Environmental Controls On The Spatial Distribution Of Greenfin Darters And Biodiversity In The Blue Ridge Mountains, Dri Tattersfield
CMC Senior Theses
Disproportionate concentrations of biodiversity in mountains worldwide suggest linkages between geologic processes and biodiversity that are not yet well understood. The Tennessee River Basin in the Blue Ridge Mountains of the southeastern U.S. is a global hotspot for freshwater fish biodiversity. To investigate drivers of biodiversity in the Tennessee River Basin, and explore links to geologic processes, I study the Greenfin Darter (Nothonotus chlorobranchius), a small fish endemic to the upper Tennessee River Basin. I use generalized linear models (GLMs) to evaluate the influence of topography, lithology, climate and land use on the distribution of the Greenfin Darter, …
North American Freshwater Snails As Paleoecologic Proxies In Crystal Lake, Medway, Ohio, Jaclyn R. Manker
North American Freshwater Snails As Paleoecologic Proxies In Crystal Lake, Medway, Ohio, Jaclyn R. Manker
Browse all Theses and Dissertations
This study combines various paleoecological proxies found within a sediment core extracted from Crystal Lake, Medway, Ohio in order to assess the lake’s sensitivity to past climate changes and how that may have affected lake water levels. Crystal Lake is a natural kettle lake formed at the end of the Wisconsin glaciation. It is now surrounded by approximately 500 residential homes and is privately owned by the HOA of Crystal Lake. A sediment core was extracted from Crystal Lake in 2007 and has been carbon dated to 18000 years before present, indicating that it contains a complete sedimentary history from …
Restoring Rain Use Efficiency To An Incised Upland Valley System In Namibia Using Filters And Ecosystem Management Understanding (Emu) Principles, K. Shamathe, H. J. R. Pringle, I. Zimmermann
Restoring Rain Use Efficiency To An Incised Upland Valley System In Namibia Using Filters And Ecosystem Management Understanding (Emu) Principles, K. Shamathe, H. J. R. Pringle, I. Zimmermann
IGC Proceedings (1977-2023)
No abstract provided.
Distribution Of Vegetation Types In Bayinbuluk Alpine Grassland, Y. K. Hu, K. H. Li, W. L. Li, G. G. Gao, Y. M. Gong
Distribution Of Vegetation Types In Bayinbuluk Alpine Grassland, Y. K. Hu, K. H. Li, W. L. Li, G. G. Gao, Y. M. Gong
IGC Proceedings (1977-2023)
No abstract provided.
Using Soil Geospatial Properties And Environments To Explore Microbial Diversity, Sharon Faye Smith
Using Soil Geospatial Properties And Environments To Explore Microbial Diversity, Sharon Faye Smith
Graduate Theses and Dissertations
Soil microorganisms help maintain nutrient cycling, control carbon sequestration, impact plant productivity, and influence several soil chemical and physical properties; yet, the processes that control the microbial composition of soil and how environmental changes may affect the composition and activity of these organisms at different scales remains a difficult and intriguing puzzle for soil scientists, ecologists, and modelers. Wetlands are endangered and important ecosystems that provide several services, which are directly linked to soil function. However, few wetland assessments consider the soil environment and microbial ecology. Linking soil microbial community composition and distribution patterns to soil physio-chemical properties would provide …
Soil Seed Bank Of Three Populations Of Capparis Decidua (Forssk.) Edgew, Abdulaziz M. Assaeed
Soil Seed Bank Of Three Populations Of Capparis Decidua (Forssk.) Edgew, Abdulaziz M. Assaeed
IGC Proceedings (1977-2023)
No abstract provided.
Survival Of Off-Host Rhipicephalus (Boophilus) Annulatus (Acari: Ixodidae) Larvae In Study Arenas In Relation To Climatic Factors And Habitats In South Texas, Usa, Emily Jesselle Zamora
Survival Of Off-Host Rhipicephalus (Boophilus) Annulatus (Acari: Ixodidae) Larvae In Study Arenas In Relation To Climatic Factors And Habitats In South Texas, Usa, Emily Jesselle Zamora
Theses and Dissertations
The cattle fever tick, Rhipicephalus (Boophilus) annulatus (Say), is an economically destructive arthropod because of its ability to vector bovine babesiosis. Cattle fever ticks can spend more than 90% of their life cycle as questing larvae, but the effect of climatic factors on their off-host behavior and survival is unclear. The goal of this study was to measure the effects of specific ecological factors on off-host larvae in nature. The study was conducted in a south Texas pasture over a 20-mo period, during which time larval populations were surveyed and ambient weather variables - relative humidity and temperatures – were …
Grassland Management In Wildlife Protected Areas (Pa's) In India, R. K. Pandey
Grassland Management In Wildlife Protected Areas (Pa's) In India, R. K. Pandey
IGC Proceedings (1977-2023)
Ecological status of Indian grasslands had been a subject of conflicting opinion in the past. Existing grasslands are anthropogenic in origin except, Himalayan meadows in high altitudes. Extensive clearing of the forests for human settlements, agricultural cultivation and domestication of animals in the past have been resulted into opening of pockets/grasslands amidst the forest areas. Such tame grasslands are categorized as succession or rotational grasslands. There are four categories of PAs viz., National parks, wildlife sanctuaries, conservation reserves and community reserves. Thus, 683 PAs (102 national parks, 551 wildlife sanctuaries, 47 conservation reserves and 04 community reserves) spread over …
Density And Aboriginal Uses Of Wild Tree Species In Milawilila Forest Reserve In Morogoro Region, Tanzania, David Sylvester Kacholi
Density And Aboriginal Uses Of Wild Tree Species In Milawilila Forest Reserve In Morogoro Region, Tanzania, David Sylvester Kacholi
Tanzania Journal of Science
This study assessed density and local uses of wild tree species in Milawilila forest reserve, Morogoro rural district. A total of six transects were set in the forest for assessing density and diversity of trees. In each transect, three plots of 20 m x 20 m were established and all trees with Diameter at Breast Height (DBH) ≥ 10 cm were identified, counted and DBH recorded in each plot. A semi structured questionnaire was used to obtain data on the use of tree species by the locals. Data were analyzed using Microsoft Excel and Statistical Package for Social Science software. …
Steppes And Grasslands In Morocco: Diversity, Functional Ecology And Socio-Economic Role, Mohammed Sghir Taleb, Jalal El Oualidi
Steppes And Grasslands In Morocco: Diversity, Functional Ecology And Socio-Economic Role, Mohammed Sghir Taleb, Jalal El Oualidi
IGC Proceedings (1977-2023)
With Morocco’s geographical situation (at the crossroads between Europe and Africa, the Mediterranean Sea and the Atlantic Ocean), its diverse climate and habitats supports a varied natural vegetation. The floristic richness of the country is related to the heterogeneity of biotypes. From the desert to the high mountains and the littoral to the continental borders, Morocco offers varied ecological conditions that support many different plant species. Steppes and grasslands are important parts of the main plant associations encountered in Morocco. They contain a wealth of flora, play important ecological roles and, from a socioeconomic perspective, are highly significant.
Improving Grassland Quality In Communal Arable Lands In The Eastern Cape Province, South Africa, Theunis L. Morgenthal, Pieter W. Conradie, Gideon Jordaan, Unathi Gulwa, Neil Ballard, John Howieson
Improving Grassland Quality In Communal Arable Lands In The Eastern Cape Province, South Africa, Theunis L. Morgenthal, Pieter W. Conradie, Gideon Jordaan, Unathi Gulwa, Neil Ballard, John Howieson
IGC Proceedings (1977-2023)
Overgrazing and shifting cultivation practise have severely degraded communal lands in the Eastern Cape of South Africa. Methods need to be developed to improve forage quality of grazing land, especially previously cultivated lands. The aim of the study was to investigate legume species to rehabilitate arable lands abandoned from cropping, to enhance their forage quality, productivity and ecological integrity. The study was conducted in seven communities within the Eastern Cape Province. This study showed that within the communal lands studied extensive areas have been cultivated and the majority of this land is now poorly utilised. Natural grasslands ploughed for cropping …
Modelling The Effects Of Climatic Factors On The Biomass And Rodent Distribution In A Tibetan Grassland Region In China, Quanzhen Wang, Maolin Xia, Bai-Song, Xi-Rao-Zhuo-Ma, Ba-Sang, Jiang- Cuo, Zha-Dui, Jin-Mei, Ze-Duo, Surong Li, Zha-Xi, Yang-Ba, Jia-Yang, Dan-Pei, Jian Cui, Jimin Cheng
Modelling The Effects Of Climatic Factors On The Biomass And Rodent Distribution In A Tibetan Grassland Region In China, Quanzhen Wang, Maolin Xia, Bai-Song, Xi-Rao-Zhuo-Ma, Ba-Sang, Jiang- Cuo, Zha-Dui, Jin-Mei, Ze-Duo, Surong Li, Zha-Xi, Yang-Ba, Jia-Yang, Dan-Pei, Jian Cui, Jimin Cheng
IGC Proceedings (1977-2023)
To identify the main climatic factors from 2007 to 2009 that influence biomass and rodent distribution, 576 fixed sample plots within 81 million km2 of different climatic grassland in Tibet were monitored. The aboveground biomass, the total burrows, the active burrows, the burrow index, and the rodent density in the plots were measured yearly in October. The monthly precipitation and the average temperatures from April to November were obtained for four successive years (2006-2009). Correlative and modelling analyses between the aboveground biomass, the rodent density, and the climatic factors were performed. The results showed that biomass and rodent density …
Nutrient Composition And Flux In A Semi-Arid Grazing Land Of Southern India, K. Karunaichamy, K. Paliwal
Nutrient Composition And Flux In A Semi-Arid Grazing Land Of Southern India, K. Karunaichamy, K. Paliwal
IGC Proceedings (1977-2023)
The distribution and cycling of minerals in various compartments of the ecosystem form one of the important aspects of ecosystem study. The uptake of nutrients through the root system and their release via litter and root decomposition depends upon a number of factors including the species, growth and stage of maturity. The semi-arid grazing land ecosystem at Madurai has developed under short evolutionary grazing histories and low moisture regimes, in which grazing pressure has had dramatic effects on the plant community and biomass (Karunaichamy 1992). The biological cycle includes circulation of nutrients between soil and biotic communities by the phenomena …
Evolutionary Traits That Enable Scleractinian Corals To Survive Mass Extinction Events, Gal Dishon, Michal Grossowicz, Michael Krom, Gilad Guy, David F. Gruber, Dan Tchernov
Evolutionary Traits That Enable Scleractinian Corals To Survive Mass Extinction Events, Gal Dishon, Michal Grossowicz, Michael Krom, Gilad Guy, David F. Gruber, Dan Tchernov
Publications and Research
Scleractinian “stony” corals are major habitat engineers, whose skeletons form the framework for the highly diverse, yet increasingly threatened, coral reef ecosystem. Fossil coral skeletons also present a rich record that enables paleontological analysis of coral origins, tracing them back to the Triassic (~241 Myr). While numerous invertebrate lineages were eradicated at the last major mass extinction boundary, the Cretaceous-Tertiary/K-T (66 Myr), a number of Scleractinian corals survived. We review this history and assess traits correlated with K-T mass extinction survival. Disaster-related “survival” traits that emerged from our analysis are: (1) deep water residing (>100 m); (2) cosmopolitan distributions, …
Characterization And Mapping Of Halophyte Vegetation Using Gis And Remote Sensing Technique In Kachchh Plane Of Gujarat, India, J. P. Singh, D. Deb, R. Srinivasan, R. S. Chaurasia, Archana Singh, Ashwini Kumar, M. Shamsudheen
Characterization And Mapping Of Halophyte Vegetation Using Gis And Remote Sensing Technique In Kachchh Plane Of Gujarat, India, J. P. Singh, D. Deb, R. Srinivasan, R. S. Chaurasia, Archana Singh, Ashwini Kumar, M. Shamsudheen
IGC Proceedings (1977-2023)
One of the pressures of a burgeoning population is need to increase agricultural production through both irrigated agriculture and the development of land that was previously regarded as marginal. About 8.56 m ha land in India is affected by salt. Out of this, about 1.2 m ha land is in Gujarat which is next to Uttar Pradesh (1.295 m ha). Kachchh, the second largest district of the country, has more than 53% of the total geographical area under Ranns (salt-marshy lands). The soil salinity in this region ranges from 3.2 to 32 EC and sodicity from 8.0 to 10.0 pH. …
Assessing Boreal Peat Fire Severity And Vulnerability Of Peatlands To Early Season Wildland Fire, Laura Bourgeau-Chavez, Sarah L. Grelik, Michael Billmire, Liza K. Jenkins, Eric S. Kasischke, Merritt R. Turetsky
Assessing Boreal Peat Fire Severity And Vulnerability Of Peatlands To Early Season Wildland Fire, Laura Bourgeau-Chavez, Sarah L. Grelik, Michael Billmire, Liza K. Jenkins, Eric S. Kasischke, Merritt R. Turetsky
Michigan Tech Publications, Part 1
Globally peatlands store large amounts of carbon belowground with 80% distributed in boreal regions of the northern hemisphere. Climate warming and drying of the boreal region has been documented as affecting fire regimes, with increased fire frequency, severity and extent. While much research is dedicated to assessing changes in boreal uplands, few research efforts are focused on the vulnerability of boreal peatlands to wildfire. In this case study, an integration of field data collection, land cover mapping of peatland types and Landsat-based fire severity mapping was conducted for four early season (May to mid-June) wildfires where peatlands are abundant in …
Role Of Fires, Herbicides And Fertilizer In Manipulating Shrub/Grass Balance In Mediterranean Grasslands, Zalmen Henkin
Role Of Fires, Herbicides And Fertilizer In Manipulating Shrub/Grass Balance In Mediterranean Grasslands, Zalmen Henkin
IGC Proceedings (1977-2023)
The decline of traditional pastoral systems has highlighted the problem of managing shrub encroachment in shrublands of the Mediterranean region, especially in marginal habitats. Ephemeral grasslands appear after fire in Mediterranean shrub communities on phosphorus-deficient soils, but natural successional processes rapidly led to their dominance. In a study, aimed at reducing the rate of successional change and extending the period of grassland dominance, phosphorus was applied after fire to improve herbaceous growth and two years later the regenerating Sarcopoterium spinosum shrubs were controlled with selective herbicide. Subsequently, the vegetation in the treated areas was monitored for more than 20 consecutive …
Assessing The Climate Water Balance Model’S Ability To Predict Soil Moisture Variability And Species Distribution Of A Forested Watershed In The Northern Cumberland Plateau, Katherine J. Love
Theses and Dissertations--Forestry and Natural Resources
Spatial patterns of moisture and tree species have been studied using environmental gradients, often represented by terrain attributes in GIS. With climate change, GIS terrain variables, which are static as long as the elevation remains unchanged, will not reflect alterations in temperature, water cycle, and atmospheric conditions. In this thesis, the commonly used terrain variables and climate water balance variables were evaluated and compared for their ability to explain soil moisture and tree species distributions in a forested watershed in the Northern Cumberland Plateau. The results suggest that GIS terrain variables generally perform better than climate water balance variables, however, …