Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Earth Sciences

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 9841 - 9870 of 17815

Full-Text Articles in Entire DC Network

Infrared Heater Arrays For Warming Grazingland Field Plots, Bruce A. Kimball, Matthew M. Conley, Shiping Wang, Xingwu Lin, Caiyun Luo, Jack Morgan, David Smith Sep 2020

Infrared Heater Arrays For Warming Grazingland Field Plots, Bruce A. Kimball, Matthew M. Conley, Shiping Wang, Xingwu Lin, Caiyun Luo, Jack Morgan, David Smith

IGC Proceedings (1977-2023)

No abstract provided.


A Test Of The Key Resource Hypothesis In The Richtersveld, South Africa, Gareth Hempson, Andrew Illius, Howard Hendricks, Susanne Vetter Sep 2020

A Test Of The Key Resource Hypothesis In The Richtersveld, South Africa, Gareth Hempson, Andrew Illius, Howard Hendricks, Susanne Vetter

IGC Proceedings (1977-2023)

No abstract provided.


Soil Nutrients As Indicators Of Desertification In Northern Kenya, H. Guyo Roba, Gufu Oba Sep 2020

Soil Nutrients As Indicators Of Desertification In Northern Kenya, H. Guyo Roba, Gufu Oba

IGC Proceedings (1977-2023)

No abstract provided.


Estimating Pastoral Pressure On Arid Rangelands Taking Into Account Herd Management Practices, Didier Genin, Ali Hanafi Sep 2020

Estimating Pastoral Pressure On Arid Rangelands Taking Into Account Herd Management Practices, Didier Genin, Ali Hanafi

IGC Proceedings (1977-2023)

No abstract provided.


New Approaches For Coping With Pastoral Risk, M. W. Demment, D. Layne Coppock, R. Kaitho Sep 2020

New Approaches For Coping With Pastoral Risk, M. W. Demment, D. Layne Coppock, R. Kaitho

IGC Proceedings (1977-2023)

No abstract provided.


Fluorometry--An Evolving Methodology For Range Animal Ecologists, Dean M. Anderson, Gary D. Rayson Sep 2020

Fluorometry--An Evolving Methodology For Range Animal Ecologists, Dean M. Anderson, Gary D. Rayson

IGC Proceedings (1977-2023)

No abstract provided.


New Approaches To Measuring The Functional Value Of Biodiversity In Plant Communities, John Connolly, Caroline Brophy, J. A. Finn, Laura Kirwan, Andreas Lüscher, T. Sebastia, A. Weigelt Sep 2020

New Approaches To Measuring The Functional Value Of Biodiversity In Plant Communities, John Connolly, Caroline Brophy, J. A. Finn, Laura Kirwan, Andreas Lüscher, T. Sebastia, A. Weigelt

IGC Proceedings (1977-2023)

No abstract provided.


Development Of Resilience‐Based State‐And‐Transition Models, David D. Briske, Brandon T. Bestelmeyer, T. K. Stringham, P. L. Shaver Sep 2020

Development Of Resilience‐Based State‐And‐Transition Models, David D. Briske, Brandon T. Bestelmeyer, T. K. Stringham, P. L. Shaver

IGC Proceedings (1977-2023)

No abstract provided.


Natural And Cultural Resources, Qualities Of The Products And Local Development In Rangeland And Grassland Areas In France: Animal Products In The "Pdo System", C. Béranger, J. Bonnemaire Sep 2020

Natural And Cultural Resources, Qualities Of The Products And Local Development In Rangeland And Grassland Areas In France: Animal Products In The "Pdo System", C. Béranger, J. Bonnemaire

IGC Proceedings (1977-2023)

No abstract provided.


Forage Production Estimate Of Incienso (Flourensiathurifera (Mol.) Dc.), Repanda (Atriplex Repanda Phil.) And Numularia (Atriplex Nummularia Lindl.) According To Shrub Size And Annual Rainfall, P. Azócar, A. Mansilla, D. Troncoso, D. Patón Sep 2020

Forage Production Estimate Of Incienso (Flourensiathurifera (Mol.) Dc.), Repanda (Atriplex Repanda Phil.) And Numularia (Atriplex Nummularia Lindl.) According To Shrub Size And Annual Rainfall, P. Azócar, A. Mansilla, D. Troncoso, D. Patón

IGC Proceedings (1977-2023)

No abstract provided.


Case Studies In Developing Rangeland Sustainability Indicators: Scale Matters, B. H. Allen‐Diaz, Lynn Huntsinger, J. W. Bartolome, L. D. Ford Sep 2020

Case Studies In Developing Rangeland Sustainability Indicators: Scale Matters, B. H. Allen‐Diaz, Lynn Huntsinger, J. W. Bartolome, L. D. Ford

IGC Proceedings (1977-2023)

No abstract provided.


Trigger Points--Decision Tools To Mitigate Seasonal Climate Risk In Western New South Wales, Australia, Yohannes Alemseged, Ronald B. Hacker, W. J. Smith Sep 2020

Trigger Points--Decision Tools To Mitigate Seasonal Climate Risk In Western New South Wales, Australia, Yohannes Alemseged, Ronald B. Hacker, W. J. Smith

IGC Proceedings (1977-2023)

No abstract provided.


A Monitoring System To Aid Decision Making In Grassland Management In Arid Areas Of China, Zhongling Liu, Adrian Williams, Dunyuan Hao Sep 2020

A Monitoring System To Aid Decision Making In Grassland Management In Arid Areas Of China, Zhongling Liu, Adrian Williams, Dunyuan Hao

IGC Proceedings (1977-2023)

No abstract provided.


Assessing The Affect Of Distance From Settlements On Landscape Function Analysis Indices In Central Mongolia, J. Addison, M. Nyamtseren Sep 2020

Assessing The Affect Of Distance From Settlements On Landscape Function Analysis Indices In Central Mongolia, J. Addison, M. Nyamtseren

IGC Proceedings (1977-2023)

No abstract provided.


Beef Cattle Performance On Panicum Maximum Pastures Under Two Levels Of Fertilization In Brazil, Valéria P. B. Euclides, Manuel C. M. Macedo, Jean Amorim Costa, Wellington Fernandez Sep 2020

Beef Cattle Performance On Panicum Maximum Pastures Under Two Levels Of Fertilization In Brazil, Valéria P. B. Euclides, Manuel C. M. Macedo, Jean Amorim Costa, Wellington Fernandez

IGC Proceedings (1977-2023)

No abstract provided.


Short‐Term Response Of Preferred And Unpreferred Species To Sheep Grazing In A Patagonian Steppe, M. D. Valenta, R. A. Golluscio Sep 2020

Short‐Term Response Of Preferred And Unpreferred Species To Sheep Grazing In A Patagonian Steppe, M. D. Valenta, R. A. Golluscio

IGC Proceedings (1977-2023)

No abstract provided.


Vegetation Response To Grazing Management In A Mediterranean Grassland: A Long‐Term Synthesis, Marcelo Sternberg, Zalmen Henkin, Avi Perevolotsky, Eugene D. Ungar Sep 2020

Vegetation Response To Grazing Management In A Mediterranean Grassland: A Long‐Term Synthesis, Marcelo Sternberg, Zalmen Henkin, Avi Perevolotsky, Eugene D. Ungar

IGC Proceedings (1977-2023)

No abstract provided.


The Influence Of Tree Thinning On Grass Dry Matter Yield, With And Without Grazing By Herbivore Game Species In The Marakele Park, South Africa, G. N. Smit, F. C. Pienaar Sep 2020

The Influence Of Tree Thinning On Grass Dry Matter Yield, With And Without Grazing By Herbivore Game Species In The Marakele Park, South Africa, G. N. Smit, F. C. Pienaar

IGC Proceedings (1977-2023)

No abstract provided.


Grazing Disturbance A Benefit To Species Diversity In Re‐Established Native Grass Stands, Michael P. Schellenberg, Alan D. Iwaasa Sep 2020

Grazing Disturbance A Benefit To Species Diversity In Re‐Established Native Grass Stands, Michael P. Schellenberg, Alan D. Iwaasa

IGC Proceedings (1977-2023)

No abstract provided.


Removal Of Pb2+ And Cd2+ From Aqueous Solutions Using Pocl3 Cross-Linked Carboxymethyl Derivatives Of Legume Starch, Ayodele Akinterinwa, Ebun Oladele, Albert Adebayo, Olubode Ajayi Sep 2020

Removal Of Pb2+ And Cd2+ From Aqueous Solutions Using Pocl3 Cross-Linked Carboxymethyl Derivatives Of Legume Starch, Ayodele Akinterinwa, Ebun Oladele, Albert Adebayo, Olubode Ajayi

Makara Journal of Science

Starch was extracted from Kwakil beans and cross-linked with POCl3 (1% v/w of starch dry basis [db]). The cross-linked starch (PCS) derivative was carboxymethylated with sodium monochloroacetate (5% to 30% w/w of starch db) to obtain cross-linked carboxymethyl starch (PCCS) derivatives. The derivatives were used in the adsorption of Pb2+ and Cd2+, and the process was monitored using atomic adsorption spectrometer. Carboxymethylation enhanced adsorption of ions (Cd2+, 95% to 96%; Pb, 65% to 94%), and it was more appreciable with Pb2+ than Cd2+ as degree of substitution increased from 0.008 to 0.052. …


Hepatitis B Surface Antigen And Viral Dna Detection And Prevalence In Nige-Ria, Abazuh Uchenna Desmond, Ohiengbomwan Onaiwu Tola, Adeolu Isaac, Yusuf Mercy Sep 2020

Hepatitis B Surface Antigen And Viral Dna Detection And Prevalence In Nige-Ria, Abazuh Uchenna Desmond, Ohiengbomwan Onaiwu Tola, Adeolu Isaac, Yusuf Mercy

Makara Journal of Science

Hepatitis B infection is a major public health issue with a high mortality rate. It is caused by hepatitis B virus (HBV), a small incomplete hepadnavirus with several open reading frames (ORF). High mutation rates of the HBV ORFs due to the virus’ replicating strategy are associated with the development and emergence of mutant strains, which may result in occult infections that are undetectable by conventional diagnostic assays. In this study, we first investigated the presence and prevalence of hepatitis B surface antigen (HBsAg) and HBV DNA among 204 patients visiting the specialist hospital in Osogbo, Nigeria, by using the …


Malonic Acid As A Green And Efficient Catalyst For The Mass-Scale Synthesis Of Pyrrole Medicinal Drugs, Farzaneh Mohamadpour Sep 2020

Malonic Acid As A Green And Efficient Catalyst For The Mass-Scale Synthesis Of Pyrrole Medicinal Drugs, Farzaneh Mohamadpour

Makara Journal of Science

A green and naturally biodegradable malonic acid synthesis of highly substituted dihydro-2-oxopyrrole derivatives has been accomplished via one-pot four-condensation of amines (aromatic or aliphatic), dialkyl acetylenedicarboxylate, and formaldehyde under mild reaction conditions. The notable advantages of the present procedure are a green, low cost, and efficient catalyst; operational simplicity; no need for chromatographic purification steps; short reaction times; and good to high yields.


Water Quality Assessment In The Occurrence Of Acanthaster Spp. (Crown-Of-Thorns Starfish, Cots) On Coral Reefs In Menjangan Island, Bali, Indonesia, Novia Arinda Pradisty, Eghbert Elvan Ampou, Rizki Hanintyo Sep 2020

Water Quality Assessment In The Occurrence Of Acanthaster Spp. (Crown-Of-Thorns Starfish, Cots) On Coral Reefs In Menjangan Island, Bali, Indonesia, Novia Arinda Pradisty, Eghbert Elvan Ampou, Rizki Hanintyo

Makara Journal of Science

Aquatic stressors are known to cause biological impairment that can result in biodiversity loss in several Marine Protected Areas (MPA), including in Menjangan Island, West Bali National Park. The objectives of this study were to correlate the changes in water quality parameters with the biological effect of Crown-of-Thorns starfish (CoTS) population dynamics and to assess the most applicable parameters for continuous environmental monitoring. Field observations and surveys were conducted three times in 2017, during the wet season, dry season and season transition, in order to assess the effect of seasonal variability. Redundancy Analysis (RDA) was performed to determine the relationship …


The Use Of Criteria And Indicator Monitoring Of Ecosystem Sustainability To Assess Ecosystem Services On Grasslands/Rangelands, R. Dennis Child, Janette Kaiser, Ralph Crawford Sep 2020

The Use Of Criteria And Indicator Monitoring Of Ecosystem Sustainability To Assess Ecosystem Services On Grasslands/Rangelands, R. Dennis Child, Janette Kaiser, Ralph Crawford

IGC Proceedings (1977-2023)

No abstract provided.


Applicability Of Criteria And Indicators For Sustainable Grassland Management To Rangelands Of Patagonia (Argentina), Gabriel E. Oliva, Andrés F. Cibils Sep 2020

Applicability Of Criteria And Indicators For Sustainable Grassland Management To Rangelands Of Patagonia (Argentina), Gabriel E. Oliva, Andrés F. Cibils

IGC Proceedings (1977-2023)

No abstract provided.


Indicators Of Sustainability In African Ranglands, Walter J. Lusigi, Leornad Berry Sep 2020

Indicators Of Sustainability In African Ranglands, Walter J. Lusigi, Leornad Berry

IGC Proceedings (1977-2023)

No abstract provided.


Experiences With Grazing The New Annual Pasture Legume Biserrula Pelecinus L. In Southern Australia Production Benefits And Risk Of Photosensitisation, Clinton K. Revell, N. Robertson, I. Williams Sep 2020

Experiences With Grazing The New Annual Pasture Legume Biserrula Pelecinus L. In Southern Australia Production Benefits And Risk Of Photosensitisation, Clinton K. Revell, N. Robertson, I. Williams

IGC Proceedings (1977-2023)

No abstract provided.


Grazing Impacts On The Dynamics Of Two Long Lived Perennial Grasses In Tropical Australia, David M. Orr, Peter J. O'Reagain Sep 2020

Grazing Impacts On The Dynamics Of Two Long Lived Perennial Grasses In Tropical Australia, David M. Orr, Peter J. O'Reagain

IGC Proceedings (1977-2023)

No abstract provided.


Testing Non‐Equilibrium Theory: Effects Of Grazing On Plant Community Composition And Soil Nutrient Availability In Dry Southern Mongolian Steppes, Karsten Wesche, Katrin Ronnenberg Sep 2020

Testing Non‐Equilibrium Theory: Effects Of Grazing On Plant Community Composition And Soil Nutrient Availability In Dry Southern Mongolian Steppes, Karsten Wesche, Katrin Ronnenberg

IGC Proceedings (1977-2023)

No abstract provided.


The Use Of Faecal Nirs To Monitor Diet Quality Different Grazing Systems In Tropical Savannas, Andrew I. White, L. P. Hunt, S. R. Petty, Dennis P. Poppi Sep 2020

The Use Of Faecal Nirs To Monitor Diet Quality Different Grazing Systems In Tropical Savannas, Andrew I. White, L. P. Hunt, S. R. Petty, Dennis P. Poppi

IGC Proceedings (1977-2023)

No abstract provided.