Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Biocrust (1)
- Biomarker (1)
- Chemotherapy (1)
- Chihuahuan Desert (1)
- Creosote (1)
-
- Data commons (1)
- Data quality (1)
- Desert (1)
- Desertification (1)
- Disease ecology (1)
- Ecology (1)
- Evolution (1)
- Genomics (1)
- Global change (1)
- Glycobiology (1)
- Honey mesquite (1)
- Hybridization (1)
- Landscape phenology (1)
- Leaf-out development (1)
- Monitoring (1)
- Parasitology (1)
- Plant phenology (1)
- Population Genetics (1)
- Restoration (1)
- Semiarid (1)
- Software (1)
- Speciation (1)
- Vector (1)
Articles 1 - 7 of 7
Full-Text Articles in Life Sciences
Linking Plot And Landscape Level Phenology, Alejandra Flores
Linking Plot And Landscape Level Phenology, Alejandra Flores
Open Access Theses & Dissertations
Plant phenology has become popularize since the 1990s to help understand the effects of climate change on vegetation, it is a way to study the patterns of leaf-out, flowering, and senescing of the life-cycle of the plant. The timing from start of season (SOS) to end-of-season (EOS) of plant leaf-out development has important implication on ecosystem productivity and carbon cycling across ecological scales from individual trees to whole regions. The need for plant phenology studies in dryland are highly anticipated, since they make up 40% of the terrestrial landscape and recently have shown the play an important role in the …
Comprehensive Study Of Human Pathogenic Trypanosomatids: From Chemotherapies To Disease Ecology, Felipe Rodriguez
Comprehensive Study Of Human Pathogenic Trypanosomatids: From Chemotherapies To Disease Ecology, Felipe Rodriguez
Open Access Theses & Dissertations
The vector-borne diseases Leishmaniasis and Chagas disease, caused by the kinetoplastid parasites Leishmania spp. and Trypanosoma cruzi respectively, are among the most important parasitic diseases in the group of neglected tropical diseases. Even though the two diseases are endemic to the Americas, they affect millions of people worldwide. Leishmaniasis and Chagas disease cause a great array of symptoms and some of them can be fatal if left undiagnosed and untreated. Current treatment regimens are becoming less effective, vaccines are still not available, and diagnosis needs to be improved. Vector control has been responsible for a decrease of diseases in endemic …
Analyzing Genetic Variation Of The Tussock Cottongrass Among Ecotypes Along A Latitudinal Gradient Through Transcriptomics, Carmen Webster
Analyzing Genetic Variation Of The Tussock Cottongrass Among Ecotypes Along A Latitudinal Gradient Through Transcriptomics, Carmen Webster
Open Access Theses & Dissertations
The Arctic is seeing some of the most extreme effects of climate change that induce environmental pressures, including warmer temperatures and longer growing seasons. Due to this, taxa may need to adapt or migrate in order to survive. The long-lived tussock cottongrass, Eriophorum vaginatum, is a foundation species in the Arctic, and little is currently known about the genetic constraints that could be playing a role in how this species will respond to the changing climate. Specific gene families that play an important role in signaling genetic pathways related to plant phenology and response to environmental stress are likely to …
Landscape Population And Evolutionary Genomics Of Several Closely Related Species Of Mallard-Like Ducks, Joshua Brown
Landscape Population And Evolutionary Genomics Of Several Closely Related Species Of Mallard-Like Ducks, Joshua Brown
Open Access Theses & Dissertations
Divergence and speciation proceed through three major evolutionary forces (i.e., selection, genetic drift, and gene flow) that are often spatially and temporally heterogeneous across the landscape. Moreover, these forces can have differing but subtle effects within the genomes of diverging taxa, and therefore, disentangling the effects of these evolutionary mechanisms throughout the speciation process can be challenging. Here, I use a recent species radiation, the mallard complex, to investigate how strong, yet varied, evolutionary pressures influence the speciation process. The mallard complex consists of 14 mallard-like waterfowl species around the world that have some of the highest rates of hybridization …
Restoring Biogeochemical Properties In Drylands And Exploring Functional Roles Of Biological Soil Crust, Kristina Young
Restoring Biogeochemical Properties In Drylands And Exploring Functional Roles Of Biological Soil Crust, Kristina Young
Open Access Theses & Dissertations
Degradation in dryland regions is a persistent and accelerating problem. Though the mechanisms that initiate and maintain dryland degradation have been well studied, restoring productivity and function to degraded dryland ecosystems remains difficult. Here, I present three chapters that address gaps in our understanding of dryland functions and our ability to restore them. I begin by examining how dryland restoration research has addressed altered biogeochemical cycling in drylands and how to expand current understandings of dryland biogeochemistry into restoration. I then present two chapters that explore mechanistic and quantitative understandings of the contribution of biocrusts to soil nutrient cycling both …
Strike-Induced Chemosensory Searching, Kleptoparasitism, And The Possibility Of Chemical Crypsis In Rattlesnakes, Mark Scott Teshera
Strike-Induced Chemosensory Searching, Kleptoparasitism, And The Possibility Of Chemical Crypsis In Rattlesnakes, Mark Scott Teshera
Open Access Theses & Dissertations
Predator-prey interactions shape the natural histories of both species as each tries to adapt and counter-adapt to the tactics of the other. This important evolutionary dynamic is crucial for ecosystem formation and stability. Predation is a fundamental aspect of life for most organisms, and many venomous reptiles, particularly ambush-foraging viperids, have evolved a prey-acquisition strategy that is highly effective in immobilizing prey, while minimizing possible counterattacks. Best studied in rattlesnakes, this remarkable behavioral sequence is known as strike-induced chemosensory searching (SICS). Throughout decades of research, the body of SICS literature on venomous reptiles has become fairly robust, particularly in rattlesnakes. …
Addressing Challenges In Aggregating And Analyzing Agroecological Data, Sarah E. Mccord
Addressing Challenges In Aggregating And Analyzing Agroecological Data, Sarah E. Mccord
Open Access Theses & Dissertations
Agroecosystems face multiple threats including land degradation and climate change, changing and competing land uses, invasive species and disease spread, and biodiversity loss. While scientists seek to understand rapidly changing ecosystems, land managers are struggling to maintain ecosystem services amid transitions to novel ecosystem states. Understanding agroecosystem drivers and ensuing responses requires quality information about ecosystems that span biomes, trophic scales, ecological processes, spatiotemporal scales, land use, and land ownership. Yet, using multi-scale agroecosystem information can be frustrating for both scientific researchers and land managers as it is difficult to locate data that are trustworthy, easily accessible, standardized, and connected …