Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Life Sciences (9642)
- Medicine and Health Sciences (6021)
- Physical Sciences and Mathematics (5495)
- Social and Behavioral Sciences (4496)
- Education (2440)
-
- Plant Sciences (2288)
- Biology (2117)
- Engineering (2077)
- Earth Sciences (1952)
- Arts and Humanities (1929)
- Plant Biology (1779)
- Agronomy and Crop Sciences (1764)
- Agricultural Science (1707)
- Plant Pathology (1591)
- Soil Science (1575)
- Ecology and Evolutionary Biology (1547)
- Weed Science (1530)
- Environmental Sciences (1423)
- Medical Specialties (1327)
- Law (1314)
- Medical Sciences (1271)
- Psychology (1170)
- Animal Sciences (971)
- Public Health (941)
- Higher Education (908)
- Chemistry (897)
- Biochemistry, Biophysics, and Structural Biology (863)
- Diseases (663)
- Agriculture (640)
- Sustainability (548)
- Institution
-
- University of Kentucky (2101)
- University of Nebraska - Lincoln (1371)
- University of Memphis (868)
- Washington University School of Medicine (737)
- TÜBİTAK (700)
-
- Louisiana State University (545)
- San Jose State University (506)
- University of Plymouth (495)
- Loyola Marymount University and Loyola Law School (488)
- The Texas Medical Center Library (470)
- City University of New York (CUNY) (459)
- University of South Florida (459)
- Utah State University (447)
- University of Arkansas, Fayetteville (424)
- Chulalongkorn University (405)
- Walden University (376)
- University of South Carolina (375)
- Nova Southeastern University (361)
- University of Mississippi (360)
- University of Texas Rio Grande Valley (357)
- Thomas Jefferson University (324)
- University of Rhode Island (316)
- University of Montana (314)
- Portland State University (301)
- Brigham Young University (297)
- Yale University (281)
- University of Central Florida (280)
- University of New Hampshire (275)
- Old Dominion University (263)
- Washington University in St. Louis (260)
- Keyword
-
- COVID-19 (585)
- Humans (556)
- Animals (263)
- Female (245)
- University of Memphis. (235)
-
- Memphis State University. (227)
- Male (217)
- Biology (206)
- Climate change (198)
- SARS-CoV-2 (180)
- Mice (177)
- Education (169)
- Biological Sciences (167)
- Machine learning (154)
- Gender (153)
- Cancer (140)
- Inflammation (136)
- Undergraduate (136)
- Conservation (132)
- Adult (123)
- Depression (121)
- Pandemic (121)
- Mental health (118)
- Biodiversity (117)
- Obesity (116)
- Stress (112)
- Ecology (105)
- Children (101)
- Race (99)
- Anxiety (96)
- Publication
-
- IGC Proceedings (1977-2023) (1504)
- Theses and Dissertations (1055)
- Faculty Publications (596)
- Open Access Publications (591)
- Electronic Theses and Dissertations (461)
-
- Bulletins (365)
- Library Philosophy and Practice (e-journal) (361)
- Chulalongkorn University Theses and Dissertations (Chula ETD) (355)
- Walden Dissertations and Doctoral Studies (343)
- Dissertations (305)
- Honors Theses (282)
- Faculty, Staff and Students Publications (215)
- USF Tampa Graduate Theses and Dissertations (201)
- Turkish Journal of Medical Sciences (179)
- Research outputs 2014 to 2021 (178)
- Publications and Research (175)
- Graduate Theses and Dissertations (174)
- School of Biological and Marine Sciences (170)
- Master's Theses (168)
- Yale Graduate School of Arts and Sciences Dissertations (166)
- Theses (157)
- Arts & Sciences Graduate Student Theses and Dissertations (155)
- Food and Machinery (154)
- Articles (142)
- 2020-Current year OA Pubs (141)
- Commencements (141)
- United States Department of Agriculture Wildlife Services: Staff Publications (136)
- Electronic Theses and Dissertations, 2020-2023 (130)
- Dissertations, Theses, and Capstone Projects (126)
- Masters Theses (119)
- Publication Type
Articles 5101 - 5130 of 33736
Full-Text Articles in Entire DC Network
Alternative Pre-Mrna Splicing Of The Mu Opioid Receptor Gene, Oprm1: Insight Into Complex Mu Opioid Actions, Shan Liu, Wen-Jia Kang, Anna Abrimian, Jin Xu, Luca Cartegni, Susruta Majumdar, Patrick Hesketh, Alex Bekker, Ying-Xian Pan
Alternative Pre-Mrna Splicing Of The Mu Opioid Receptor Gene, Oprm1: Insight Into Complex Mu Opioid Actions, Shan Liu, Wen-Jia Kang, Anna Abrimian, Jin Xu, Luca Cartegni, Susruta Majumdar, Patrick Hesketh, Alex Bekker, Ying-Xian Pan
Open Access Publications
Most opioid analgesics used clinically, including morphine and fentanyl, as well as the recreational drug heroin, act primarily through the mu opioid receptor, a class A Rhodopsin-like G protein-coupled receptor (GPCR). The single-copy mu opioid receptor gene,
Minutes, October 2021, University Of Dayton. College Of Arts And Sciences
Minutes, October 2021, University Of Dayton. College Of Arts And Sciences
Documents of the College of Arts and Sciences Academic Affairs Committee
Minutes from College of Arts and Sciences Academic Affairs Committee
Natterer In Neotropical Nematoda: Species Described By Rudolphi, Diesing, And Molin, Ricardo Guerrero
Natterer In Neotropical Nematoda: Species Described By Rudolphi, Diesing, And Molin, Ricardo Guerrero
MANTER: Journal of Parasite Biodiversity
Between 1817 and 1835 Johann Natterer collected 1,729 samples of endoparasitic helminths in Brazil and southern Venezuela. Of the 323 names that were assigned to the collected nematode specimens, 163 are still valid and accepted species, 84 are still doubtful, and 76 must be rejected. In this work, each name is analyzed and correlated to the literature to clarify its taxonomic status.
The purpose of this review of the material collected by Natterer is to establish a complete list of all described species; their current status; and whether they are valid species, synonyms, or nomen nudum as well as to …
Thirty Critical Research Needs For Managing An Ecologically And Culturally Unique Remote Marine Environment: The Kimberley Region Of Western Australia, C. Cvitanovic, M. Mackay, R. Kelly, S. K. Wilson, K. Waples, K. L. Nash, E. I. Van Putten, S. Field, T. Botterill-James, B. J. Austin, L. E. Beckley, F. Boschetti, M. Depczynski, R. J. Dobbs, R. D. Evans, M. Feng, R. K. Goater, A. R. Halford, A. Kendrick, G. A. Kendrick, G. D. B. Lincoln, L. J. Ludgerus, R. J. Lowe, Kathryn Mcmahon, J. K. Munro, S. J. Newman, C. Nutt, L. Pearson, M. J. O'Leary, Z. T. Richards, W. D. Robbins, D. I. Rogers, Chandra P. Salgado Kent, V. Schoepf, M. J. Travers, M. Thums, A. D. Tucker, J. N. Underwood, S. Whiting, D. Matthews, Dambimangari Aboriginal Corporation
Thirty Critical Research Needs For Managing An Ecologically And Culturally Unique Remote Marine Environment: The Kimberley Region Of Western Australia, C. Cvitanovic, M. Mackay, R. Kelly, S. K. Wilson, K. Waples, K. L. Nash, E. I. Van Putten, S. Field, T. Botterill-James, B. J. Austin, L. E. Beckley, F. Boschetti, M. Depczynski, R. J. Dobbs, R. D. Evans, M. Feng, R. K. Goater, A. R. Halford, A. Kendrick, G. A. Kendrick, G. D. B. Lincoln, L. J. Ludgerus, R. J. Lowe, Kathryn Mcmahon, J. K. Munro, S. J. Newman, C. Nutt, L. Pearson, M. J. O'Leary, Z. T. Richards, W. D. Robbins, D. I. Rogers, Chandra P. Salgado Kent, V. Schoepf, M. J. Travers, M. Thums, A. D. Tucker, J. N. Underwood, S. Whiting, D. Matthews, Dambimangari Aboriginal Corporation
Research outputs 2014 to 2021
The Kimberley marine environment in Western Australia is widely recognised for its outstanding natural features, vast and remote sea and landscapes, and Indigenous cultural significance. To ensure that adequate baseline information is available to understand, monitor and manage this remote and relatively understudied region, scientific exploration was undertaken between 2012 and 2018 as part of the Kimberley Marine Research Program (KMRP). Whilst this program generated significant amounts of new knowledge about the region, important research gaps remain, that if answered, should improve the capacity of managers to conserve the region's values more effectively. Here, we apply established participatory horizon scanning …
Complete Mitochondrial Genomes Of Two Species Of Stichopathes Brook, 1889 (Hexacorallia: Antipatharia: Antipathidae) From Rapa Nui (Easter Island), Cynthia M. Asorey, Javier Sellanes, Daniel Wagner, Erin E. Easton
Complete Mitochondrial Genomes Of Two Species Of Stichopathes Brook, 1889 (Hexacorallia: Antipatharia: Antipathidae) From Rapa Nui (Easter Island), Cynthia M. Asorey, Javier Sellanes, Daniel Wagner, Erin E. Easton
School of Earth, Environmental, & Marine Sciences Faculty Publications
We report the complete mitochondrial genomes of two antipatharian species, Stichopathes sp. SCBUCN-8849 and Stichopathes sp. SCBUCN-8850, collected between 120 and 180 m depth off Rapa Nui (∼ −27.1°, −109.4°). The size of the two mitogenomes are 20,389 bp (29.0% A, 15.2% C, 19.9% G, and 35.9% T) and 20,463 bp (29.0% A, 15.3% C, 19.9% G, and 35.8% T), respectively. Both mitogenomes have the classic Hexacorallia gene content of 13 protein-coding, two rRNA, and two tRNA genes plus a COX1 intron with embedded HEG as found in the Antipathidae and other antipatharian families.
Senior Nursing Students' Knowledge, Attitudes, And Perceived Competency About Older Adults, Deborah Denise Brabham
Senior Nursing Students' Knowledge, Attitudes, And Perceived Competency About Older Adults, Deborah Denise Brabham
Dissertations
Nurses entering the workforce may have limited education in gerontological nursing. Therefore, many nurses are unprepared to provide quality care to older adults. An unprepared nursing workforce could negatively influence older adults' health outcomes and care experience.
To determine differences in senior nursing students' knowledge, attitudes, and perceived competency about older adults based on enrollment in a bachelor of science in nursing degree (BSN), associate's degree nursing (ADN), and practical nursing (PN) program that offers geriatric content in curricula.
Jews And Gender, Leonard Greenspoon
Jews And Gender, Leonard Greenspoon
Studies in Jewish Civilization
Jews and Gender features sixteen authors exploring the history and culture of the intersection of Judaism and gender from the biblical world to today. Topics include subversive readings of biblical texts; reappraisal of rabbinic theory and practice; women in mysticism, Chasidism, and Yiddish literature; and women in contemporary culture and politics. Accessible and comprehensive, this volume will appeal to the general reader in addition to engaging with contemporary academic scholarship.
Land-Use Dynamics Associated With Mangrove Deforestation For Aquaculture And The Subsequent Abandonment Of Ponds, Aslan Aslan, Abdullah F. Rahman, Scott M. Robeson, Muhammad Ilman
Land-Use Dynamics Associated With Mangrove Deforestation For Aquaculture And The Subsequent Abandonment Of Ponds, Aslan Aslan, Abdullah F. Rahman, Scott M. Robeson, Muhammad Ilman
School of Earth, Environmental, & Marine Sciences Faculty Publications
Highlights
-
SAR data is useful for tracking dynamic changes in mangrove ecosystem.
-
Time series SAR data can be used to estimate lifespan of pond.
-
During 22+ years, over half of the mangrove forest in Mahakam Delta has been converted to aquaculture.
Abstract
The objective of this study was to evaluate the spatiotemporal dynamics of large area mangrove deforestation, aquaculture pond building, and the subsequent abandonment of ponds in a large delta in Indonesia, namely the Mahakam Delta. So, we developed and applied a novel methodology for exploring the lifespan of aquaculture ponds. Using historical multispectral and radar data, the …
Aducanumab For Alzheimer Disease: The Amyloid Hypothesis Moves From Bench To Bedside, Erik S. Musiek, Teresa Gomez-Isla, David M Holtzman
Aducanumab For Alzheimer Disease: The Amyloid Hypothesis Moves From Bench To Bedside, Erik S. Musiek, Teresa Gomez-Isla, David M Holtzman
Open Access Publications
No abstract provided.
Perfluorinated Alkyl Substances: Sewage Treatment And Implications For Receiving Waters, S. D.W. Comber, M. J. Gardner, B. Ellor
Perfluorinated Alkyl Substances: Sewage Treatment And Implications For Receiving Waters, S. D.W. Comber, M. J. Gardner, B. Ellor
School of Geography, Earth and Environmental Sciences
No abstract provided.
Evaluating Soil Carbon As A Proxy For Erosion Risk In The Spatio-Temporal Complex Hydropower Catchment In Upper Pangani, Northern Tanzania, Aloyce I.M. Amasi, Maarten Wynants, Remigius A. Kawala, Shovi F. Sawe, William H. Blake, Kelvin M. Mtei
Evaluating Soil Carbon As A Proxy For Erosion Risk In The Spatio-Temporal Complex Hydropower Catchment In Upper Pangani, Northern Tanzania, Aloyce I.M. Amasi, Maarten Wynants, Remigius A. Kawala, Shovi F. Sawe, William H. Blake, Kelvin M. Mtei
School of Geography, Earth and Environmental Sciences
Land use conversion is generally accompanied by large changes in soil organic carbon (SOC). SOC influences soil erodibility through its broad control on aggregate stability, soil structure and infiltration capacity. However, soil erodibility is also influenced by soil properties, clay mineralogy and other human activities. This study aimed to evaluate soil organic carbon as proxy of soil erosion risk in the Nyumba ya Mungu (NYM) catchment in Northern Tanzania. Soil organic carbon (SOC) was measured by an AgroCares scanner from which the soil organic matter (SOM) was derived using the conversional van Bemmelen factor of 1.72. A regression analysis performed …
Dying For Change: A Roadmap To Refine The Fish Acute Toxicity Test After 40 Years Of Applying A Lethal Endpoint, I Katsiadaki, T Ellis, L Andersen, P Antczak, E Blaker, N Burden, T Fisher, C Green, B Labram, A Pearson, K Petersen, D Pickford, C Ramsden, A Rønneseth, K Ryder, D Sacker, C Stevens, H Watanabe, H Yamamoto, F Sewell, P Hawkins, H Rufli, Rd Handy, Sk Maynard, Mn Jacobs
Dying For Change: A Roadmap To Refine The Fish Acute Toxicity Test After 40 Years Of Applying A Lethal Endpoint, I Katsiadaki, T Ellis, L Andersen, P Antczak, E Blaker, N Burden, T Fisher, C Green, B Labram, A Pearson, K Petersen, D Pickford, C Ramsden, A Rønneseth, K Ryder, D Sacker, C Stevens, H Watanabe, H Yamamoto, F Sewell, P Hawkins, H Rufli, Rd Handy, Sk Maynard, Mn Jacobs
School of Biological and Marine Sciences
No abstract provided.
Ocean Warming Threatens Southern Right Whale Population Recovery, Macarena Agrelo, Fábio G. Daura-Jorge, Victoria J. Rowntree, Mariano Sironi, Philip S. Hammond, Simon N. Ingram, Carina F. Marón, Florencia O. Vilches, Jon Seger, Roger Payne, Paulo C. Simões-Lopes
Ocean Warming Threatens Southern Right Whale Population Recovery, Macarena Agrelo, Fábio G. Daura-Jorge, Victoria J. Rowntree, Mariano Sironi, Philip S. Hammond, Simon N. Ingram, Carina F. Marón, Florencia O. Vilches, Jon Seger, Roger Payne, Paulo C. Simões-Lopes
School of Biological and Marine Sciences
Whales contribute to marine ecosystem functioning, and they may play a role in mitigating climate change andsupporting the Antarctic krill (Euphausia superba) population, a keystone prey species that sustains the entireSouthern Ocean (SO) ecosystem. By analyzing a five-decade (1971–2017) data series of individual southern rightwhales (SRWs; Eubalaena australis) photo-identified at Península Valdés, Argentina, we found a marked increasein whale mortality rates following El Niño events. By modeling how the population responds to changes in thefrequency and intensity of El Niño events, we found that such events are likely to impede SRW population recoveryand could even cause population decline. Such outcomes …
Identification And Characterization Of Cyps Induced In The Drosophila Antenna By Exposure To A Plant Odorant, Shane R Baldwin, Pratyajit Mohapatra, Monica Nagalla, Rhea Sindvani, Desiree Amaya, Hope A Dickson, Karen Menuz
Identification And Characterization Of Cyps Induced In The Drosophila Antenna By Exposure To A Plant Odorant, Shane R Baldwin, Pratyajit Mohapatra, Monica Nagalla, Rhea Sindvani, Desiree Amaya, Hope A Dickson, Karen Menuz
Department of Medicine Faculty Papers
Degrading Enzymes (ODEs). However, their contribution to olfactory signaling in vivo is poorly understood. This is due in part to the challenge of identifying which of the dozens of antennal-expressed CYPs might inactivate a given odorant. Here, we tested a high-throughput deorphanization strategy in Drosophila to identify CYPs that are transcriptionally induced by exposure to odorants. We discovered three CYPs selectively upregulated by geranyl acetate using transcriptional profiling. Although these CYPs are broadly expressed in the antenna in non-neuronal cells, electrophysiological recordings from CYP mutants did not reveal any changes in olfactory neuron responses to this odorant. Neurons were desensitized …
Recent Advances In Silver Nanoparticle-Based Electrochemical Sensors For Determining Organic Pollutants In Water, Ziad Khalifa, Moustafa Zahran, Magdy Zahran, Magdi Abdelazzem
Recent Advances In Silver Nanoparticle-Based Electrochemical Sensors For Determining Organic Pollutants In Water, Ziad Khalifa, Moustafa Zahran, Magdy Zahran, Magdi Abdelazzem
Chemical Engineering
Water pollutants have attracted great attention because of their negative effect on human health. Accordingly, various analytical techniques have been investigated to detect water pollutants as a preliminary step for their control. This review highlights silver nanoparticles (AgNPs) as promising electrochemical probes studied for detecting organic pollutants. Electrochemical sensors can be fabricated by modifying electrode surfaces using AgNPs via different techniques, such as electrochemical deposition, drop casting, spin coating, sticking, and transfer sticking, as well as carbon paste-based modification. AgNPs at electrode surfaces can be identified by their stripping to form Ag+ with a particular oxidation peak. Additionally, they can …
Environmental Factors Effect On Rangeland Plant Diversity In Al Sabaloga Area, Sudan, Salma Abdelghaffar Hassan Alamin, Hala Ahamed Hassan
Environmental Factors Effect On Rangeland Plant Diversity In Al Sabaloga Area, Sudan, Salma Abdelghaffar Hassan Alamin, Hala Ahamed Hassan
IGC Proceedings (1977-2023)
The study was conducted in AL Elsabaloga area in Sudan in 2017. This study aimed to assess environmental and biotic factor effects on rangeland plant diversity in the study area. A total sample size of 130 was chosen randomly to collect primary data. The data were coded, summarized, tabulated and processed. Analysis was conducted using (SPSS) computer program. The results were presented in the form of a frequency distribution. There were many problem effects on Rangeland plant diversity. Among these were floods (P < 0.01), expansion of agriculture (P < 0.01), over grazing (P < 0.01), drought, sand marching and desertification (P < 0.01), insect (P < 0.01). In addition, disappear of some plant and appear invader plant. The study was concluded expansion of agriculture, seasonal fire, overgrazing, drought, sand marching and desertification are important factors that effect on plant diversity in the study area. The study recommended protection of rangeland needs to be by improvement of the extension services, management of rangeland through opening of fire lines. Development and improvement, plant diversity and demarcation of routes relevant ministries is essential.
Collective Approach Of Rural Development: Case Study Of “Maronna Foundation” In The Pampa Bioma, Rio Grande Do Sul, Brazil, Adriana Ferreira Da Costa Vargas, Vicente Celestino Pires Silveira
Collective Approach Of Rural Development: Case Study Of “Maronna Foundation” In The Pampa Bioma, Rio Grande Do Sul, Brazil, Adriana Ferreira Da Costa Vargas, Vicente Celestino Pires Silveira
IGC Proceedings (1977-2023)
The Maronna Foundation was created in the 1980s by two brothers who were heirless farmers. After a visit to Massey University, New Zealand, they decided to use their fortune to support rural farming in the Brazilian Pampa through an agropastoral institute. Over the last four decades, the foundation has developed diverse research, education, and extension projects in partnership with local, regional, national, and international institutions, especially universities, research centers, non-governmental organizations and local governances. Recent surveys conducted in the area of the Maronna Foundation demonstrate the interest of local breeders in technologies applied to farming systems, mainly for rangeland and …
Woody Plant Species Composition And Diversity In Rusinga Island, Homa Bay County, Kenya, M. N. Nyaga, S. M. Mureithi, V. O. Wasonga, O. K. Koech
Woody Plant Species Composition And Diversity In Rusinga Island, Homa Bay County, Kenya, M. N. Nyaga, S. M. Mureithi, V. O. Wasonga, O. K. Koech
IGC Proceedings (1977-2023)
Information on the state of woody vegetation of Rusinga Island is urgently needed in order to develop appropriate and effective conservation guidelines. Rusinga Island is an ancient historic area with numerous archeological sites and a bountiful of birdlife. However, the Island is characterized by highly degraded ecosystems from human disturbances such as cutting down of trees for fuel, construction poles, and overgrazing resulting in a remarkable degradation of flora, alteration of the ecosystems and loss of biodiversity. This study sought to determine the composition and diversity of woody plant species in Rusinga Island to understand the current status in order …
Visual Assessment Of Soil Structure As An Early Indicator Of Soil Quality In Response To Intensive Rotational Grazing, N. Teutscherova, E. Vazquez, D. Baquero, N. E. Velasquez-Ruiz, M. Pulleman, Jacobo Arango
Visual Assessment Of Soil Structure As An Early Indicator Of Soil Quality In Response To Intensive Rotational Grazing, N. Teutscherova, E. Vazquez, D. Baquero, N. E. Velasquez-Ruiz, M. Pulleman, Jacobo Arango
IGC Proceedings (1977-2023)
Grasslands can play a crucial role in mitigation of global warming by serving as carbon sink. Nevertheless, to achieve the grasslands’ potential, sustainable management is of the utmost importance as it determines system’s productivity and ecosystem services. Due to the increasing demand for animal products in developing countries, grazed areas increase exponentially in the tropics, mainly due to unsustainable management leading to low productivity and soil degradation. We evaluated the impact of intensive rotational grazing management (IRG) on early indicators of soil quality following land-use change based on on-farm observations of visual soil characteristics using two different widely used assessment …
Short-Term Dry Season Forage Monitoring In Rangelands And Savannas Of West Africa, J. Y. Anchang, C. W. Ross, W. Ji, Q. Yu, B. Lind, L. Prihodko, N. P. Hanan
Short-Term Dry Season Forage Monitoring In Rangelands And Savannas Of West Africa, J. Y. Anchang, C. W. Ross, W. Ji, Q. Yu, B. Lind, L. Prihodko, N. P. Hanan
IGC Proceedings (1977-2023)
Dry season plant biomass is critical for livestock production and hence livelihoods in rangeland communities. We have developed a cloud-based application that employs remote sensing data to provide weekly spatially explicit information on plant vegetation cover in West Africa during the dry season (typically October-June). In this paper, we discuss the data analysis steps and results that drive the application. Linear spectral mixture analysis is used to derive endmember samples of basic landcover primitives (active/green vegetation, non-active vegetation, and bare soil) from very high-resolution imagery that spans the spatiotemporal spectrum from wet/peak-green to dry/dormant conditions in Senegal. These samples are …
Range Condition Classification Based On Quantitative Characteristics Of Vegetation, Nafiseh Fakhar, Mansour Mesdaghi, Kamal Naseri
Range Condition Classification Based On Quantitative Characteristics Of Vegetation, Nafiseh Fakhar, Mansour Mesdaghi, Kamal Naseri
IGC Proceedings (1977-2023)
Change in range condition classes over time are usually the basis for monitoring management effectiveness. Several approaches have been proposed to monitor the range condition classes in relation to a bench mark usually called climax stage. There are some types of range condition classification often included in a range inventory. In this paper, six factors of canopy cover, litter frequency, plant vigour, soil protection percentage, plant composition, and present production as a percentage of indicative state were described for determination range conditions. We have determined range condition classes by using R software. This method was developed by FAO projects in …
Prescribed Fire Plus Grazing Horses: A Sustainable Model To Decrease Fire Hazard In A Mountain Landscape, F. Torres-Manso, R. Pinto, A. Marta-Costa, P. Fernandes, M. Fernandes
Prescribed Fire Plus Grazing Horses: A Sustainable Model To Decrease Fire Hazard In A Mountain Landscape, F. Torres-Manso, R. Pinto, A. Marta-Costa, P. Fernandes, M. Fernandes
IGC Proceedings (1977-2023)
The mountain landscapes of northern Portugal have been modified through rural depopulation and the absence of rangeland management. As such, increased above-ground biomass and higher fire hazard resulted, as well as decreased ecosystem biodiversity. The objectives of the OpentoPreserve Interreg SUDOE project are to evaluate the effects of the combined use of prescribed fire with grazing horses, and also to develop strategies of socio-economic valorization of this model. Concerning the evaluation of prescribed fire and grazing effects, the experimental design consisted of three plots in the Natura 2000 Alvão/Marão Site, respectively Control, Fire x Grazing, and Fire. The Fire plots …
Positive Changes In Regional Vegetation Cover In Patagonia Shown By Maras Monitoring System, Gabriel E. Oliva, J. Gaitan
Positive Changes In Regional Vegetation Cover In Patagonia Shown By Maras Monitoring System, Gabriel E. Oliva, J. Gaitan
IGC Proceedings (1977-2023)
MARAS (Environmental monitoring of arid and semiarid lands) is a vegetation and soil monitoring system in Patagonia, a 700.000 km2 area in southern South America. Installed between 2008-2015 within INTA-Argentina and INIA-Chile national agricultural research institutes, it includes photographs, 500-point intercepts, 50-m canfield lines to detect patches, 10 land function observations and 0-10 cm soil samples in 458 ground sites. Data is centralized and freely accessible https://maras.inta.gob.ar. We analysed changes based in the first 255 reassessments made at 5-year intervals. At a regional scale significant changes (P < 0.05 paired T test) were detected for: perennial vegetation cover, that was originally 42% and increased +3.1%. Plant species richness of 13.7 species/monitor increased +0.7, bare soil of 35% decreased -7.9%. Length of bare soil interpatches was 157 cm and decreased -42 cm. Land function indexes of Stability 46.2%, Infiltration 45.1% and Recycling 31.0% showed small non-significant changes (-1.3, +0.7 and +1.42 respectively). Significant changes in soils under vegetated patches were: conductivity 0.59 dS/m increased +0.49, and pH 7.3 +0.33. Organic matter was 2.0% and increased 0.35%, and sand was 73% and increased 3%. Finer soil particles decreased non-significantly. Bare soil interpatches had 1.4% organic matter and also increased 0.33%, and clay, that initially was 9.3% reduced -2.3%. The long-term ground sites provide a means to monitor slow changes in these rangelands in relation to global climatic change and regional grazing patterns. Patagonia has currently the lowest domestic stocking rates of the last century and vegetation seems to be slowly growing in perennial cover, with significant reductions in exposed bare soil, increase in biodiversity and soil organic carbon.
Modelling Catchment-Scale Evapotranspiration And Net Primary Production In Sub-Humid African Grasslands: Towards Understanding Carbon And Water Trade-Offs In Communal Rangelands, A. R. Palmer, Z. Munch, L. Vermeulen
Modelling Catchment-Scale Evapotranspiration And Net Primary Production In Sub-Humid African Grasslands: Towards Understanding Carbon And Water Trade-Offs In Communal Rangelands, A. R. Palmer, Z. Munch, L. Vermeulen
IGC Proceedings (1977-2023)
Being able to confidently predict net primary production within intensively used rangeland systems has become the goal of many rangeland scientists. The communally-managed rangelands of Africa, with their very high livestock numbers, represent such a challenge, as above-ground biomass is most often depleted before it has had chance to accumulate. In order to provide more accurate estimates of NPP for these rangelands, we explored the use of direct measurements of canopy cover, standing biomass and leaf area index, against standard vegetation indices from the Sentinel 2 sensors. Following intensive field surveys, we developed regression models of the relationships between Sentinel …
Lowveld Savanna Bush Cutting Alters Tree-Grass Interactions, E. R. Wedel, J. B. Nippert, A. M. Swemmer
Lowveld Savanna Bush Cutting Alters Tree-Grass Interactions, E. R. Wedel, J. B. Nippert, A. M. Swemmer
IGC Proceedings (1977-2023)
Savannas are characterized by the coexistence of trees and grasses, and their interactions are modified by water availability and herbivore activity. Many savannas are experiencing bush encroachment, resulting in reduced herbaceous productivity and shifts in savanna structure. This study aims to understand the effects of tree density and tree cutting on herbaceous productivity, water use, and herbivore abundance in a mopane-dominated lowveld savanna. We present data from a 4-year mopane-cutting experiment in the Mthimkhulu Game Reserve bordering Kruger National Park (South Africa). We established three 60x60 m plots for experimental manipulation where mopane stems and re-sprouting shoots were cut 2-3 …
Education “Failure” Narrative Indispensable To Failed School Privatization Schemes Organized By A Failed State. A Response To "Public Schools At-Risk: Examining A Century Of U.S. Media Coverage Of 'Unsatisfactory Student Performance' And The Rise Of School Privatization", Shawgi Tell
Democracy & Education
Frenkiewich and Onosko (2020) maintain that American public education has functioned as a pillar of democracy and a force for progress for most of the twentieth century, but they worry that a major turn to school privatization in recent years will undermine the democratic mission and vision of public schooling and harm society as well. The authors contend that school privatization is the latest attempt by federal and state officials to fix the seemingly intractable problem of “unsatisfactory student performance.” They contend that there is a well-funded and organized effort by neoliberals and privatizers to create and multiply charter schools …
Hypocrisy On The High Seas: An Examination Of The Conflicting Policy Goals And Actions Of The International Community Regarding Illegal, Unreported, And Unregulated Fishing, Peter J. Tamburello
Hypocrisy On The High Seas: An Examination Of The Conflicting Policy Goals And Actions Of The International Community Regarding Illegal, Unreported, And Unregulated Fishing, Peter J. Tamburello
Environmental and Earth Law Journal (EELJ)
Fish and the fishing industry are one of the main sources of food protein and commerce in many areas of the world, whether it be from traditional and artisanal fishing practiced in Somalia and other undeveloped countries or large scale international commercial fishing from rich and industrialized nations. The world’s oceans are currently being plagued by overfishing both from legally authorized activities and Illegal, Unreported, and Unregulated Fishing. The purpose of this paper is to examine the problems plaguing the world’s fisheries with an eye towards the environmental damage and economic harm that stem from it. It is also to …
Multifunctionality Of Sown Grassland Is Enhanced By Combining Four Complementary Species, M. Suter, O. Huguenin-Elie, Andreas Lüscher
Multifunctionality Of Sown Grassland Is Enhanced By Combining Four Complementary Species, M. Suter, O. Huguenin-Elie, Andreas Lüscher
IGC Proceedings (1977-2023)
We investigated species diversity effects and multifunctionality in an intensively managed grassland. A diversity experiment was set up with monocultures and mixtures comprising Lolium perenne, Dactylis glomerata, Trifolium pratense, and Trifolium repens, and was maintained for three years at 150 kg∙N∙ha-1∙ year-1. Ten functions were measured that represented i) forage production (aboveground biomass yield (μ), standard deviation of yield (σ), temporal stability (μ/σ), weed biomass), ii) N cycling (symbiotic-N2-fixation, N efficiency, NO3 in soil solution), and forage quality (crude protein content (CP), organic matter digestibility …
Status And Distribution Of Range Plants Genetic Resources In Al Sabaloga Biosphere Conservation Area, Sudan, Salma Abdelghaffar Hassan Alamin, Hala Ahamed Hassan
Status And Distribution Of Range Plants Genetic Resources In Al Sabaloga Biosphere Conservation Area, Sudan, Salma Abdelghaffar Hassan Alamin, Hala Ahamed Hassan
IGC Proceedings (1977-2023)
The study was conducted in the Al Sabaloga area in 2017. The objective of this study was to investigate the status and distribution of range plants genetic resources in the study area. Sample size of 131 was chosen randomly to collect primary data. The data were coded, summarized, tabulated and processed. Analysis was conducted using (SPSS) computer program. The results were presented in the form of a frequency distribution. The result of this study represented in an ecological zone in the study area about (67%) Nile bank and island, Goz (35%), Valley (22%), Plains (17%) and Mountains (17%). For example, …
Rejuvenation Of Rangelands – Role Of Diversity And Improvement Strategies Of Range Grasses, A. K. Roy, D. R. Malaviya, P. Kaushal
Rejuvenation Of Rangelands – Role Of Diversity And Improvement Strategies Of Range Grasses, A. K. Roy, D. R. Malaviya, P. Kaushal
IGC Proceedings (1977-2023)
In India, a major part of the rural economy is dependent on the grazing-based livestock husbandry which is unique integration of agriculture and livestock coupled with rich traditional knowledge. Ecosystems of common property resources had been a mainstay in rural economy and livelihood. The traditional grazing forage resources in arid and semi-arid regions have deteriorated a lot due to various factors including heavy grazing pressure, climate change and dominance of invasive species, thus, needs rejuvenation. Additionally, these are causing serious economic and ecological problems such as poor productivity, soil and water erosion and reduced carbon sequestration.
The genetic improvement of …