Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Biology (4)
- Ecology and Evolutionary Biology (3)
- Animal Sciences (2)
- Biodiversity (2)
- Environmental Sciences (2)
-
- Physical Sciences and Mathematics (2)
- Plant Sciences (2)
- Population Biology (2)
- Agricultural Science (1)
- Agronomy and Crop Sciences (1)
- Analytical Chemistry (1)
- Biochemistry (1)
- Biochemistry, Biophysics, and Structural Biology (1)
- Chemistry (1)
- Entomology (1)
- Environmental Health (1)
- Marine Biology (1)
- Natural Resources and Conservation (1)
- Ornithology (1)
- Other Animal Sciences (1)
- Other Ecology and Evolutionary Biology (1)
- Pharmacology, Toxicology and Environmental Health (1)
- Plant Biology (1)
Articles 1 - 9 of 9
Full-Text Articles in Life Sciences
Population Ecology Of A Caribbean Epiphyte Trichocentrum Undulatum (Orchidaceae): Defining Habitat And The Effects Of Herbivory And Hurricanes At Its Peripheral And Core Range, Haydee Borrero
FIU Electronic Theses and Dissertations
Population ecology studies are central to species conservation. My dissertation focused on the Florida state-listed endangered orchid, Trichocentrum undulatum at its northern-most range in the Everglades National Park (ENP), Florida and multiple populations throughout its core range in Cuba. Through surveying populations of T. undulatum across this range from 2013-2021, I made a new reporting on the occurrence of a specialized insect herbivore, Melanagromyza miamensis in Cuba (Chapter 1). This flower-crippling herbivore was previously known only in the ENP. With this discovery I assess the intensity and impacts of this herbivore, as well as others on T. undulatum across the …
The Real Snowbirds Of South Florida: Using Citizen Science To Assess The Ranges Of South Florida's Overwintering Birdsh, Alexander V. Levine
The Real Snowbirds Of South Florida: Using Citizen Science To Assess The Ranges Of South Florida's Overwintering Birdsh, Alexander V. Levine
FIU Electronic Theses and Dissertations
The overwintering ranges of North American bird populations are shifting and the winter ranges of south Florida’s landbirds remain understudied. Expert-drawn range maps used for scientific studies and environmental public policy could therefore be depicting inaccurate ranges for many migratory birds. This study used citizen science data from eBird (2001–2017) to evaluate patterns in overwintering avian species richness and identify discrepanciesin expert-drawn species range maps for overwintering passerines in south Florida. Most of Florida’s overwintering bird species were sighted in south Florida. Of the species observed there between 2001 and 2017, 66% had range map discrepancies. Fifteen target species were …
A Comparative Study Of Concurrent Acoustic And Diver Survey Data, And Fish Community Descriptions Of A High Latitude Coral Reef, Florida, Usa, Adam M. Zenone
A Comparative Study Of Concurrent Acoustic And Diver Survey Data, And Fish Community Descriptions Of A High Latitude Coral Reef, Florida, Usa, Adam M. Zenone
FIU Electronic Theses and Dissertations
Fisheries independent data on relatively unstudied nekton communities were used to explore the efficacy of new tools to be applied in the investigation of shallow coastal coral reef habitats. These data obtained through concurrent diver visual and acoustic surveys provided descriptions of spatial community distribution patterns across seasonal temporal scales in a previously undocumented region. Fish density estimates by both diver and acoustic methodologies showed a general agreement in ability to detect distributional patterns across reef tracts, though magnitude of density estimates were different. Fish communities in southeastern Florida showed significant trends in spatial distribution and seasonal abundance, with higher …
Buckwheat As A Cover Crop In Florida: Mycorrhizal Status, Soil Analysis, And Economic Assessment, Daria Boglaienko
Buckwheat As A Cover Crop In Florida: Mycorrhizal Status, Soil Analysis, And Economic Assessment, Daria Boglaienko
FIU Electronic Theses and Dissertations
This thesis analyses buckwheat as a cover crop in Florida. The study was designed to demonstrate: soil enrichment with nutrients, mycorrhizal arbuscular fungi interactions, growth in different soil types, temperature limitations in Florida, and economic benefits for farmers. Buckwheat was planted at the FIU organic garden (Miami, FL) in early November and harvested in middle December. After incorporation of buckwheat residues, soil analyses indicated the ability of buckwheat to enrich soil with major nutrients, in particular, phosphorus. Symbiosis with arbuscular mycorrhizal fungi increased inorganic phosphorus uptake and plant growth. Regression analysis on aboveground buckwheat biomass weight and soil characteristics showed …
Assessment Of Submerged Vegetation As Indicators Of Irgarol Contamination, Melissa V. Fernandez
Assessment Of Submerged Vegetation As Indicators Of Irgarol Contamination, Melissa V. Fernandez
FIU Electronic Theses and Dissertations
Irgarol 1051 is a common antifoulant toxic to certain marine organisms. Submerged aquatic vegetation (SAV) are exposed to this herbicide when it leaches into the marine environment from painted structures, making SAVs ideal candidates to function as sentinel indicator of contamination. In the initial stage of this study, Coconut Grove and Key Largo Harbor were assessed for environmental exposure to Irgarol. Water, sediment and SAVs were collected, the latter two subject to automated solid phase extraction, and all samples analyzed by GC/MS-SIM for Irgarol and its metabolite, M1. Of the vegetation analyzed, Halodule and Syringodium had the highest capacity to …
Reproductive Ecology Of The Burrowing Owl, Athene Cunicularia Floridana, In Dade And Broward Counties, Florida, Brian Keith Mealey
Reproductive Ecology Of The Burrowing Owl, Athene Cunicularia Floridana, In Dade And Broward Counties, Florida, Brian Keith Mealey
FIU Electronic Theses and Dissertations
From 1988 to 1990 a study of the reproductive ecology of the burrowing owl was conducted to determine seasonality and reproductive success in Dade and Broward Counties. Reproductive data for each of the three years (1988- 1990) reveal a higher reproductive success rate (54%) for 1990 than 1989 (40%) and 1988 (40%). Owls using previously used burrows had a higher success in fledging young (63%) than newly excavated burrows (19%). T-tests were conducted on several appendage measurements of male and female owls to determine sexual dimorphic traits. Metatarsus lengths of males and females were different (t=2.36, p=0.02). As of 1990,197 …
Population Ecology Of The Bald Eagle (Haliaeetus Leucocephalus) In Florida Bay, Everglades National Park, Florida, 1959-1990, John L. Curnutt
Population Ecology Of The Bald Eagle (Haliaeetus Leucocephalus) In Florida Bay, Everglades National Park, Florida, 1959-1990, John L. Curnutt
FIU Electronic Theses and Dissertations
Using aerial census techniques, I collected data on the population, reproduction and nesting habits of Bald Eagles in Florida Bay, Florida, for three consecutive breeding seasons (Oct - Mar, 1987 - 1990). For analysis I consolidated my data with those collected by Robertson et al. between 1959 and 1986 for a total of 26 seasons. The breeding population of Bald Eagles in Florida Bay has been stable since censuses began in 1959. However, numbers of subadult eagles in Florida Bay have declined sharply since the early 1960’s. Breeding density was apparently limited by territoriality. Nesting success was positively correlated …
Potential Rates Of Methanogenesis In Peat And Marl Sawgrass Wetlands In The Florida Everglades, Dave S. Bachoon
Potential Rates Of Methanogenesis In Peat And Marl Sawgrass Wetlands In The Florida Everglades, Dave S. Bachoon
FIU Electronic Theses and Dissertations
Methanogenesis was studied in soils from two sawgrass wetlands of the Florida Everglades. Marl soils exhibited a significantly higher potential rate of methanogenesis than peat soils. In these wetlands, methanogenesis: (1) decreased rapidly with increasing soil depth, (2) increased at higher temperatures and lower Eh, (3) was stimulated by organic compounds (cellulose, glucose and acetate), and (4) remained unaffected by added ammonium. Lowering the Eh in the peat and marl soils with sulfide or sulfate stimulated methanogenesis. In January 1990, phosphate caused a significant increase in methanogenesis. The potential rates of methanogenesis decreased to undetectable levels when water levels dropped …
Seasonal Activity And Road Mortality Of The Snakes Of The Pa-Hay-Okee Wetlands Of Everglades National Park, Frank S. Bernardino
Seasonal Activity And Road Mortality Of The Snakes Of The Pa-Hay-Okee Wetlands Of Everglades National Park, Frank S. Bernardino
FIU Electronic Theses and Dissertations
The current study describes the composition and activity of the snake community of the Pa-hay-okee wetlands of Everglades National Park. The study was conducted from January 1987 to January 1989. Sixteen species were observed, with Thamnophis sauritus, Thamnophis sirtalis, Nerodia fasciata pictiventris, and Agkistrodon piscivorus representing 90.2% of the total sample. The seasonal distribution and activity of the snakes were closely related to fluctuations in the water table. Most activity occurred in the winter months as snakes migrated west following the drying water edge of Shark River Slough. Seventy percent of all snakes observed during this study …