Open Access. Powered by Scholars. Published by Universities.®
- Institution
- Keyword
-
- Antagonism (1)
- Antibiosis (1)
- Arsenic (1)
- Biodiversity and ecosystem functioning (1)
- Biomass and plant species evenness (1)
-
- Botany--Tennessee--Hamilton County (1)
- Coal (1)
- Galapagos Islands (1)
- Microbial interactions (1)
- Nitrate (1)
- Old fields (1)
- Phytogeography (1)
- Plant community composition; productivity vs. plant diversity (1)
- Plant diversity (1)
- Plants--Tennessee--Identification (1)
- Quebec (1)
- Selenium (1)
- Species evenness (1)
- Stable isotopes (1)
- Turf grass (1)
- Publication
- Publication Type
Articles 1 - 7 of 7
Full-Text Articles in Entire DC Network
The Vascular Flora Of Prentice Cooper State Forest And Wildlife Management Area, Tennessee, John Trevor Beck
The Vascular Flora Of Prentice Cooper State Forest And Wildlife Management Area, Tennessee, John Trevor Beck
Masters Theses and Doctoral Dissertations
The vascular plants of Tennessee's Prentice Cooper State Forest and Wildlife Management Area were gathered from 112 collection trips made during the growing seasons of 1998 and 1999. Prentice Cooper has an interesting and a rich flora. I collected 2,313 specimens and examined 110 herbarium specimens. The flora is comprised of 139 families, 512 genera, and 1,038 species and lesser taxa. The four largest families are Asteraceae (128 species-12% of the flora), Poaceae (106 species-10%), Cyperaceae (64 species-6%), and Fabaceae (57 species-5%). These four families represent approximately 34% of the total flora. Numerous county extensions, as well as rare, threatened, …
Multiple Source Pools And Dispersal Barriers For Galápagos Plant Species Distribution, J. Alan Yeakley, John F. Weishampel
Multiple Source Pools And Dispersal Barriers For Galápagos Plant Species Distribution, J. Alan Yeakley, John F. Weishampel
Environmental Science and Management Faculty Publications and Presentations
We reexamined geographic factors explaining the number of plant species on islands in the Galápagos Archipelago. We hypothesized that plant species richness (S) was related to the number of source pools and that plant species dispersal preferentially followed direct, oceanic pathways. To test different dispersal pathways from multiple source pools, the total number of islands within a given dispersal radius (i) was posed as the sum of the number of line-of-sight islands (Ci) and of the number of islands without line-of sight connection (Bi). In partial regression analyses, controlling for nearest island area (A2) …
The Role Of Chitinase Production By Stenotrophomonas Maltophilia Strain C3 In Biological Control Of Bipolaris Sorokiniana, Zhongge Zhang, Gary Y. Yuen
The Role Of Chitinase Production By Stenotrophomonas Maltophilia Strain C3 In Biological Control Of Bipolaris Sorokiniana, Zhongge Zhang, Gary Y. Yuen
Department of Plant Pathology: Faculty Publications
The role of chitinase production by Stenotrophomonas maltophilia strain C3 in biological control of leaf spot on tall fescue (Festuca arundinacea), caused by Bipolaris sorokiniana, was investigated in vitro and in vivo. The filtrate of a broth culture of C3, with chitin as the carbon source, was separated into fractions. A high molecular-weight fraction (>8 kDa) was chitinolytic and more inhibitory than a low-molecularweight, nonchitinolytic fraction to conidial germination and hyphal growth by B. sorokiniana and to leaf spot development. A protein fraction derived by ammonium sulfate precipitation and a chitinase fraction purified by chitin affinity …
Toward An Ecosystem Approach To Remediation In The Great Basin, Ted K. Raab
Toward An Ecosystem Approach To Remediation In The Great Basin, Ted K. Raab
Ted K. Raab
We consider the web of interactions among geologic materials, soils, plants, and animals to ask, "If mining or other extractive energy technologies occur in desert regions, what do we need to know to return the land to productivity?" The Great Basin represents a formidable challenge in this regard, as winters in these cold deserts and seasonal lack of moisture during parts of the year severely constrain the growing season for vegetation. Due to the nature of current or proposed mining activities in this region, we have chosen to concentrate on two potential pollutants: the trace element selenium (Se) and nitrate …
Biodiversity And Ecosystem Functioning: Importance Of Species Evenness In An Old Field, Brian J. Wilsey, Catherine Potvin
Biodiversity And Ecosystem Functioning: Importance Of Species Evenness In An Old Field, Brian J. Wilsey, Catherine Potvin
Brian J. Wilsey
Changes in land use, habitat fragmentation, nutrient enrichment, and environmental stress often lead to reduced plant diversity in ecosystems. However, it remains controversial whether these reductions in diversity will affect energy flow and nutrient cycling. Diversity has two components: species richness, or the number of plant species in a given area, and species evenness, or how well distributed abundance or biomass is among species within a community. We experimentally varied species evenness and the identity of the dominant plant species in an old field of Quebec to test whether plant productivity would increase with increasing levels of evenness, and whether …
Center For Grassland Studies Newsletter, Winter 2000, Volume 6, No. 1
Center For Grassland Studies Newsletter, Winter 2000, Volume 6, No. 1
Center for Grassland Studies: Newsletters
Contents:
Genetically Enhanced Turfgrasses Where Are We Going? by Terrance Riordan, Department of Horticulture, University of Nebraska-Lincoln
NUBEEF Educational Web Site for Beef Producers by Rick Rasby, Department of Animal Science, University of Nebraska-Lincoln
Bison Symposium in Lincoln April 6-8
CGS Welcomes Laurice Matulka
GLCI Lists Benefits of Grazing Lands
Glickman Calls for National Commitment to Preserve Private Land
Nebraska Ranch Practicum Again Offered
2000 Nebraska Range Short Course by Lowell Moser, Department of Agronomy, UNL
Technology Spurs Alfalfa Genome Mapping
Field Trip Graduate Course Focuses on East Coast Ecology
April 1 Deadline for Abstracts: National Conference on Grazing Lands
Floristic Status Of Log Ferns (Dryopteris) In Arkansas, James H. Peck
Floristic Status Of Log Ferns (Dryopteris) In Arkansas, James H. Peck
Journal of the Arkansas Academy of Science
The fern flora of Arkansas consists of 96 taxa, including five species and three hybrids of the Log Fern genus Dryopteri This report summarizes a twenty year floristic and ecologic study of their distribution and abundance in Arkansas. Historica data are presented to review the slow accumulation of taxa reported in floras of Arkansas from early collectors to 1980 and the rapid accumulation of taxa since 1980 employing modern field techniques. Chorological data and floristic data are presented based on field, herbarium, and literature studies to correct the record and document the known localities of the eight Arkansas taxa: Dryopteris …