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Articles 1381 - 1410 of 3204
Full-Text Articles in Earth Sciences
Overgrazing Affects Arbuscular Mycorrhizae Diversity And Abundance In Patagonian Steppe, Natalie Von Dudinszky, M. N. Cabello, A. A. Grimoldi, S. Schalamuk, R. A. Golluscio
Overgrazing Affects Arbuscular Mycorrhizae Diversity And Abundance In Patagonian Steppe, Natalie Von Dudinszky, M. N. Cabello, A. A. Grimoldi, S. Schalamuk, R. A. Golluscio
IGC Proceedings (1977-2023)
No abstract provided.
Forb Responses To Varying Grazing Regimes In Australian Native Temperate Grasslands, Vivienne Turner, H. Zimmer
Forb Responses To Varying Grazing Regimes In Australian Native Temperate Grasslands, Vivienne Turner, H. Zimmer
IGC Proceedings (1977-2023)
No abstract provided.
Prescribed Burning Based On Range Condition In The Okavango Delta Ramsar Site In Botswana, Africa, W. S. W. Trollope, L. A. Trollope, C. De B. Austin, A. C. Held
Prescribed Burning Based On Range Condition In The Okavango Delta Ramsar Site In Botswana, Africa, W. S. W. Trollope, L. A. Trollope, C. De B. Austin, A. C. Held
IGC Proceedings (1977-2023)
No abstract provided.
Ordination Of Plant Communities At Nazlochai Basin In West Azarbaijan Rangelands Of Iran, J. Torkan, A. Alijanpoor
Ordination Of Plant Communities At Nazlochai Basin In West Azarbaijan Rangelands Of Iran, J. Torkan, A. Alijanpoor
IGC Proceedings (1977-2023)
No abstract provided.
Rehabilitation Of Grasslands Through Perennial Grass Recruitment Within Existing Swards, R. Thapa, David R. Kemp, Warwick B. Badgery, David L. Michalk
Rehabilitation Of Grasslands Through Perennial Grass Recruitment Within Existing Swards, R. Thapa, David R. Kemp, Warwick B. Badgery, David L. Michalk
IGC Proceedings (1977-2023)
No abstract provided.
The State Of Forage Germplasm Resources In Yunnan Province, Zhenzhong Sun, Jun Yin, Qiao Wei
The State Of Forage Germplasm Resources In Yunnan Province, Zhenzhong Sun, Jun Yin, Qiao Wei
IGC Proceedings (1977-2023)
No abstract provided.
Alien Plant Invasions Of Jinfo Mountain National Nature Reserve--Identifying And Implying, Juan Sun, Ruijun Long, Guofeng Yang, Yuqiang Gai, Di Yan, Yongqing Teng
Alien Plant Invasions Of Jinfo Mountain National Nature Reserve--Identifying And Implying, Juan Sun, Ruijun Long, Guofeng Yang, Yuqiang Gai, Di Yan, Yongqing Teng
IGC Proceedings (1977-2023)
No abstract provided.
An Investigation And Comparison Of Stable Isotopes In Meteoric Waters And Groundwaters From Southern Washington, Emily E. Smoot
An Investigation And Comparison Of Stable Isotopes In Meteoric Waters And Groundwaters From Southern Washington, Emily E. Smoot
University Honors Theses
A main source of freshwater in the Pacific Northwest is the Columbia River Basalt Group aquifer system. The semi-arid region of eastern Washington has undergone heavy groundwater depletion in recent decades due to increasing population and expanding agricultural use. Aggressive mining has resulted in drawdowns of up to 30 meters. By using stable isotopes oxygen-eighteen (18O) and deuterium (D), this study confines the timing of groundwater precipitation and proposes an explanation for why drawdowns are so significant. The isotopic composition of meteoric water is compared to groundwaters from southeast Washington. The two populations are statistically different (p < 0.001, alpha = 0.05). The isotopic composition of groundwaters from the deepest wells (< -150 m msl) are isotopically lighter than meteoric waters and not achievable by recharge under the current climate. These deep groundwaters are interpreted to have precipitated during the Last Glacial Maximum in the late Pleistocene and finished precipitating roughly 5 ka. Thus, replenishment of the aquifer cannot be expected to keep pace with extraction. Additionally, this research examines the elevation response in the stable isotope signature of meteoric water along the 47° N latitude by computing three lapse rates for 18 …
Benchmarking And Parameter Sensitivity Of Physiological And Vegetation Dynamics Using The Functionally Assembled Terrestrial Ecosystem Simulator (Fates) At Barro Colorado Island, Panama, Charles D. Koven, Ryan G. Knox, Rosie A. Fisher, Jeffrey Q. Chambers, Bradley O. Christoffersen, Stuart J. Davies, Matteo Detto
Benchmarking And Parameter Sensitivity Of Physiological And Vegetation Dynamics Using The Functionally Assembled Terrestrial Ecosystem Simulator (Fates) At Barro Colorado Island, Panama, Charles D. Koven, Ryan G. Knox, Rosie A. Fisher, Jeffrey Q. Chambers, Bradley O. Christoffersen, Stuart J. Davies, Matteo Detto
School of Earth, Environmental, & Marine Sciences Faculty Publications
Plant functional traits determine vegetation responses to environmental variation, but variation in trait values is large, even within a single site. Likewise, uncertainty in how these traits map to Earth system feedbacks is large. We use a vegetation demographic model (VDM), the Functionally Assembled Terrestrial Ecosystem Simulator (FATES), to explore parameter sensitivity of model predictions, and comparison to observations, at a tropical forest site: Barro Colorado Island in Panama. We define a single 12-dimensional distribution of plant trait variation, derived primarily from observations in Panama, and define plant functional types (PFTs) as random draws from this distribution. We compare several …
Water Requirement And Water Requirement Rate Of Alfalfa In Bashang Area, Hongren Sun, Lingfa Ma, Jianguo Han, Ruixin Wu, Pinghong Li
Water Requirement And Water Requirement Rate Of Alfalfa In Bashang Area, Hongren Sun, Lingfa Ma, Jianguo Han, Ruixin Wu, Pinghong Li
IGC Proceedings (1977-2023)
No abstract provided.
The Rooting Depth, Root Biomass And Its Vertical Distribution Regularity Of Alfalfa In Different Growing Years In Beijing Plain, Hongren Sun, Jianyi Sun, Tianfu Guan, Ruixin Wu, Lingfa Ma, Pinghong Li
The Rooting Depth, Root Biomass And Its Vertical Distribution Regularity Of Alfalfa In Different Growing Years In Beijing Plain, Hongren Sun, Jianyi Sun, Tianfu Guan, Ruixin Wu, Lingfa Ma, Pinghong Li
IGC Proceedings (1977-2023)
No abstract provided.
Productivity Loss Due To Fire In A Semi‐Arid Rangeland Of South Africa, Hennie A. Snyman
Productivity Loss Due To Fire In A Semi‐Arid Rangeland Of South Africa, Hennie A. Snyman
IGC Proceedings (1977-2023)
No abstract provided.
Effect Of Soil And Subhabitat Differentiation On Seedling Establishment And Growth Of Acacia Mellifera Subsp. Detinens In A Semi‐Arid Savanna Of South Africa, G. N. Smit, M. G. Hagos
Effect Of Soil And Subhabitat Differentiation On Seedling Establishment And Growth Of Acacia Mellifera Subsp. Detinens In A Semi‐Arid Savanna Of South Africa, G. N. Smit, M. G. Hagos
IGC Proceedings (1977-2023)
No abstract provided.
The Study Of Salinity And Drought Stress Effects On Three Range Species Agropyron Intermedium, Avena Barbata And Panicum Antidotale From Iran, M. M. Sharifi Kashan, Z. Tolui
The Study Of Salinity And Drought Stress Effects On Three Range Species Agropyron Intermedium, Avena Barbata And Panicum Antidotale From Iran, M. M. Sharifi Kashan, Z. Tolui
IGC Proceedings (1977-2023)
No abstract provided.
Productivity And Persistence Of Kura Clover-Grass Mixtures, Philippe Seguin, R. Drapeau
Productivity And Persistence Of Kura Clover-Grass Mixtures, Philippe Seguin, R. Drapeau
IGC Proceedings (1977-2023)
No abstract provided.
Radiation Use Efficiency Of Alfalfa‐Tall Fescue Mixtures In A Temperate Humid Area, Omar Scheneiter, O. Bertín
Radiation Use Efficiency Of Alfalfa‐Tall Fescue Mixtures In A Temperate Humid Area, Omar Scheneiter, O. Bertín
IGC Proceedings (1977-2023)
No abstract provided.
Applying Multivariate Analysis In Semi‐Steppe Rangelands (Case Study: Steppe Rangelands Of Fars Province, Iran), S. Mohtashamnia, Gh. Zahedi, Hossein Arzani
Applying Multivariate Analysis In Semi‐Steppe Rangelands (Case Study: Steppe Rangelands Of Fars Province, Iran), S. Mohtashamnia, Gh. Zahedi, Hossein Arzani
IGC Proceedings (1977-2023)
No abstract provided.
Changes On Floristic Composition Of Flooding Pampa Rangeland By The Use Of Glyphosate, A. Rodriguez, E. J. Jacobo, J. Vilarino, K. Kessel
Changes On Floristic Composition Of Flooding Pampa Rangeland By The Use Of Glyphosate, A. Rodriguez, E. J. Jacobo, J. Vilarino, K. Kessel
IGC Proceedings (1977-2023)
No abstract provided.
Drought Response Of Trichloris Crinita Plants With Different Aridity History: Water Use, Leaf Elongation And Senescence, R. E. Quiroga, L. J. Blanco, R. A. Golluscio
Drought Response Of Trichloris Crinita Plants With Different Aridity History: Water Use, Leaf Elongation And Senescence, R. E. Quiroga, L. J. Blanco, R. A. Golluscio
IGC Proceedings (1977-2023)
No abstract provided.
Genetic Structure And Aflp Variation Of Six Native Festuca Hallii (Vasey Piper) Populations In The Northern Great Plains Of Canada, Jie Qiu, Yongbi Fu, Yuguang Bai, John F. Wilmshurst
Genetic Structure And Aflp Variation Of Six Native Festuca Hallii (Vasey Piper) Populations In The Northern Great Plains Of Canada, Jie Qiu, Yongbi Fu, Yuguang Bai, John F. Wilmshurst
IGC Proceedings (1977-2023)
No abstract provided.
Effect Of Sowing And Oversowing On Species Abundance In Mountain Pastures Of Central Italy, Andrea Pardini, F. Natali
Effect Of Sowing And Oversowing On Species Abundance In Mountain Pastures Of Central Italy, Andrea Pardini, F. Natali
IGC Proceedings (1977-2023)
No abstract provided.
Hydraulic Lift Through The Root Systems In Zygophyllum Xanthoxylum, Decao Niu, Xiaohong Xue, Shifang Pei, Hongrong Zhang, Hua Fu
Hydraulic Lift Through The Root Systems In Zygophyllum Xanthoxylum, Decao Niu, Xiaohong Xue, Shifang Pei, Hongrong Zhang, Hua Fu
IGC Proceedings (1977-2023)
No abstract provided.
Ecology Of Herbaceous Legumes In The Fortescue River Valley Floodplain, Western Australia, Dion Nicol, J. E. D. Fox
Ecology Of Herbaceous Legumes In The Fortescue River Valley Floodplain, Western Australia, Dion Nicol, J. E. D. Fox
IGC Proceedings (1977-2023)
No abstract provided.
The Effect Of Annual Weather On Spring Grass Phenological Development, G. Nagy, K. Petö
The Effect Of Annual Weather On Spring Grass Phenological Development, G. Nagy, K. Petö
IGC Proceedings (1977-2023)
No abstract provided.
Does Disturbance Similarly Facilitate Weed Invasion Within Grass, Forb, And Shrub Plots?, Tom A. Monaco, E. D. Leonard
Does Disturbance Similarly Facilitate Weed Invasion Within Grass, Forb, And Shrub Plots?, Tom A. Monaco, E. D. Leonard
IGC Proceedings (1977-2023)
No abstract provided.
Soil Factors Affecting The Distribution Of Four Salt Tolerant Range Plants In Eastern Azarbaijane Province (Gharakhlar), A. Mokhtari Asal, Sh. Rastegar, S. Kh. Mahdavi, M. R. Sadeghimanesh
Soil Factors Affecting The Distribution Of Four Salt Tolerant Range Plants In Eastern Azarbaijane Province (Gharakhlar), A. Mokhtari Asal, Sh. Rastegar, S. Kh. Mahdavi, M. R. Sadeghimanesh
IGC Proceedings (1977-2023)
No abstract provided.
Initial Development Of Dwarf Elephant Grass (Pennisetum Purpureum Schum.) Clones In The Coastal Region Of Pernambuco State, Brazil, Alexandre C. L. De Mello, M. V. Cunha, M. A. Lira, M. V. F. Santos, José C. B. Dubeux Jr., E. V. Freitas
Initial Development Of Dwarf Elephant Grass (Pennisetum Purpureum Schum.) Clones In The Coastal Region Of Pernambuco State, Brazil, Alexandre C. L. De Mello, M. V. Cunha, M. A. Lira, M. V. F. Santos, José C. B. Dubeux Jr., E. V. Freitas
IGC Proceedings (1977-2023)
No abstract provided.
Biodiversity And Structure Of Subtropical Boliviano‐Tucumano Mountain Forests, Depending On Disturbance Intensity Due To Forest Grazing And Selective Timber Logging, Andrea C. Mayer, F. S. Zenteno, S. Beck, Svenja Marquardt, Michael Kreuzer, H. Alzérreca
Biodiversity And Structure Of Subtropical Boliviano‐Tucumano Mountain Forests, Depending On Disturbance Intensity Due To Forest Grazing And Selective Timber Logging, Andrea C. Mayer, F. S. Zenteno, S. Beck, Svenja Marquardt, Michael Kreuzer, H. Alzérreca
IGC Proceedings (1977-2023)
No abstract provided.
Tiller Weight Versus Tiller Number In A Perennial Ryegrass Population: A Productivity Index, Cory Matthew, A. M. Sartie, H. S. Easton
Tiller Weight Versus Tiller Number In A Perennial Ryegrass Population: A Productivity Index, Cory Matthew, A. M. Sartie, H. S. Easton
IGC Proceedings (1977-2023)
No abstract provided.
Great Basin Paleoclimate And Aridity Linked To Artic Warming And Tropical Pacific Sea Surface Temperature, Matthew S. Lachniet, Yemane Asmerom, Victor Polyak, Rhawn Denniston
Great Basin Paleoclimate And Aridity Linked To Artic Warming And Tropical Pacific Sea Surface Temperature, Matthew S. Lachniet, Yemane Asmerom, Victor Polyak, Rhawn Denniston
Geoscience Faculty Research
The arid southwestern United States is susceptible to sustained droughts that impact water resources and economic activity for millions of residents. Previous work has not systematically investigated the structure, timing, and possible forcings of Holocene Great Basin sub‐orbital hydroclimate changes, impeding our ability to understand the potential future controls on Southwestern aridity. The objective of this paper is to constrain the potential forcings on Holocene aridity and temperature, via comparison of new high‐resolution speleothem data, an Aridity Index synthesizing hydroclimate records, and linkages of Southwestern paleoclimate to other regions. The high‐resolution data from Leviathan Cave provide a paleoclimate record since …