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Full-Text Articles in Biology
Salvinia Molesta: An Assessment Of The Effects And Methods Of Eradication, Arti Lal
Salvinia Molesta: An Assessment Of The Effects And Methods Of Eradication, Arti Lal
Master's Projects and Capstones
Salvinia molesta is an invasive aquatic fern. It is now the second worse aquatic invader in the world. Since the 1930s, it has invaded most tropical and some temperate countries. S. molesta plants grow vegetatively and can increase in size rapidly. S. molesta can form thick mats of up to 1-meter-thick. There are a number of ways these thick mats negatively affect the environment: 1) reduce light to benthic organisms, 2) reduce oxygen in the water column for other organisms, 3) accumulate as organic matter at the bottom of the water column, 4) decrease nutrients for other organisms, and 5) …
Calculating Evapotranspiration Of Arundo Donax Along The Rio Grande, Jose R. Escamilla Jr.
Calculating Evapotranspiration Of Arundo Donax Along The Rio Grande, Jose R. Escamilla Jr.
Theses and Dissertations
Invasive species have been recorded to cause large economic and ecological impacts on various ecosystems and their services. Locally, giant reed (Arundo donax L.), a woody grass native to the Mediterranean, adversely impacts riparian ecosystems in southwestern United States by aggressively displacing their native flora and fauna. Giant reed also has become a cause of concern for national water security, especially in water-limited areas of the arid southwestern United States. The main objective of this study is to provide the first, landscape-level estimates of water use by giant reed in the United States. Evapotranspiration was monitored using the eddy …
Relationships Between Texas Tortoise Carapace Length, Home Range Size, And Habitat Selection At Sites With Invasive Grass, Kiley V. Briggs
Relationships Between Texas Tortoise Carapace Length, Home Range Size, And Habitat Selection At Sites With Invasive Grass, Kiley V. Briggs
Theses and Dissertations
Invasive grasses in south Texas have the potential to negatively impact the threatened Texas tortoise (Gopherus berlandieri) by reducing the availability of preferred foods (forbs) and may cause tortoises to travel farther, lead to reduced carapace length, and reduce the availability of refugia from heat stress. I used compositional analysis, regression, and ANOVA to explore relationships between invasive grasses and habitat use, home range size, and carapace length, as well as compared daily maximum temperatures between tussocks of an invasive and native grass. Forbs were ranked higher in use over invasive grasses in compositional analysis, but not strongly so (p …
Assessing The Success Of Outreach At Preventing The Movement Of Aquatic Invasive Species In Illinois, Ellen Anne Cole
Assessing The Success Of Outreach At Preventing The Movement Of Aquatic Invasive Species In Illinois, Ellen Anne Cole
Master's Theses
Overland transport of recreational boats is the major vector of dispersal for aquatic invasive species among North American waterbodies. These species have large economic and ecosystem impacts, and understanding their movement is essential to understanding the biodiversity and functioning of aquatic ecosystems across the continent. I surveyed Illinois boaters to determine patterns of recreational boat movement and the consistency with which boaters perform actions to prevent the spread of invasive species. Although most boaters perform these actions, a large minority do not and the network for invasive species spread on recreational boats still connects most waterbodies. Next, I interviewed managers …
Using Linear Mixed Models To Analyze Native And Non-Native Species Abundances In Coastal Sage Scrub, Kaylee Anderson
Using Linear Mixed Models To Analyze Native And Non-Native Species Abundances In Coastal Sage Scrub, Kaylee Anderson
Scripps Senior Theses
Coastal Sage Scrub (CSS) is a low scrubland plant community native to the coasts of California, housing many threatened and endangered species. Due to the invasion of non-native plants, many areas of CSS have type converted to annual grasslands and the fire frequency has accelerated; fire in turn, may facilitate further invasion, leading to a loss of biodiversity. While many studies document post-fire succession in these communities, pre-fire data are rarely available for comparison, especially data on seedling emergence. I analyzed post-fire recovery of a type-converted grassland community, comparing seedling emergence data for the first and third year after fire …