Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Nebraska - Lincoln (35)
- University of Dayton (22)
- City University of New York (CUNY) (7)
- Cal Poly Humboldt (5)
- SIT Graduate Institute/SIT Study Abroad (5)
-
- Eastern Washington University (3)
- Jacksonville State University (3)
- University of Kentucky (3)
- University of Louisville (3)
- Wilfrid Laurier University (3)
- Ateneo de Manila University (2)
- California Polytechnic State University, San Luis Obispo (2)
- East Tennessee State University (2)
- Kennesaw State University (2)
- Nova Southeastern University (2)
- Regis University (2)
- University of Southern Maine (2)
- Virginia Commonwealth University (2)
- Augustana College (1)
- Bellarmine University (1)
- Brigham Young University (1)
- Bucknell University (1)
- CentraCare Health (1)
- Central Washington University (1)
- Chinese Academy of Sciences (1)
- Claremont Colleges (1)
- Clemson University (1)
- Cleveland State University (1)
- Connecticut College (1)
- Dartmouth College (1)
- Keyword
-
- Historical data (10)
- Long term monitoring (10)
- Maps (10)
- Permanent plot (10)
- Vegetation research (10)
-
- Biodiversity (9)
- Prairie (7)
- Center for Grassland Studies (6)
- Grasslands (6)
- Invasive species (6)
- Nebraska (6)
- University of Nebraska-Lincoln (6)
- Conservation (5)
- Field maps (5)
- Ecology (4)
- Flora (4)
- Restoration (4)
- Taxonomy (4)
- Alabama (3)
- Botany (3)
- Callery Pear (3)
- Climate change (3)
- Leaf Phenology (3)
- Morphology (3)
- Plants (3)
- Pollination (3)
- Succession (3)
- Wetlands (3)
- Woody Plant Invasion (3)
- Algae (2)
- Publication Year
- Publication
-
- School of Biological Sciences: Faculty Publications (14)
- Data Files for Old-Growth Deciduous Forest Dynamics Archive: Hueston Woods (11)
- Five Rivers MetroParks Collaboration Data Archive (11)
- Center for Grassland Studies: Newsletters (6)
- Cal Poly Humboldt theses and projects (5)
-
- Independent Study Project (ISP) Collection (5)
- Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298 (4)
- Department of Plant Pathology: Faculty Publications (3)
- Dissertations, Theses, and Capstone Projects (3)
- Theses (3)
- Dissertations and Theses (2)
- Honors Theses (2)
- Maine Collection (2)
- Master's Theses (2)
- Regis University Student Publications (comprehensive collection) (2)
- Theses and Dissertations (2)
- Theses and Dissertations (Comprehensive) (2)
- Theses and Dissertations--Biology (2)
- Undergraduate Honors Theses (2)
- 2020 Symposium Posters (1)
- 2023 Midwest Ecology & Evolution Conference (1)
- 2023 Symposium (1)
- 2025 Symposium (1)
- AUCTUS: The Journal of Undergraduate Research and Creative Scholarship (1)
- All HCAS Student Capstones, Theses, and Dissertations (1)
- All Master's Theses (1)
- All NMU Master's Theses (1)
- All Theses (1)
- Annual Symposium on Biomathematics and Ecology Education and Research (1)
- Biological Sciences Faculty Publications (1)
- Publication Type
- File Type
Articles 91 - 120 of 149
Full-Text Articles in Plant Biology
Seed And Seedling Data From Sugarcreek Metropark Restoration Experiment, Michaela J. Woods, Meredith Cobb, Ryan W. Mcewan
Seed And Seedling Data From Sugarcreek Metropark Restoration Experiment, Michaela J. Woods, Meredith Cobb, Ryan W. Mcewan
Five Rivers MetroParks Collaboration Data Archive
This dataset encompasses information following seed germination and seedling growth of three tree species: Quercus rubra, Juglans cinerea, and Carya laciniosa. Seed sizes were recorded prior to incubation in sand, vermiculite, or without media. Seeds were then germinated with time to germination recorded in this dataset. After germination, seedlings were planted in Sugarcreek Metropark in either fall 2011 or spring 2012. One-half of seedlings were planted in tree tubes and a half without. Seedling height and diameter was recorded in June 2014 and March 2019, and death of seedlings was noted.
Growing On A Scar: Genetic Variation Of Achillea Millefolium Near Meeker, Colorado, Ace Spitzer
Growing On A Scar: Genetic Variation Of Achillea Millefolium Near Meeker, Colorado, Ace Spitzer
Ursidae: The Undergraduate Research Journal at the University of Northern Colorado
Mining operations deposit high concentrations of heavy metals such as lead, cadmium, arsenic, and vanadium into the topsoil of an ecosystem. These toxic metals can affect plant health and behavior, causing local extinction and shifts in ecosystem dynamics. However, genetic analyses of some plants growing on toxic soil conditions indicate higher genetic diversity than would be expected in that environment. Determining the effects of soil pollution on plants is important to determine a species’ utility in conservation and restoration. This investigation compared the genetic diversity of western yarrow (Achillea millefolium, Asteraceae), growing near a mine with vanadium and …
Using Drones For Precision Agriculture, Jiyul Chang, Madhav P. Nepal
Using Drones For Precision Agriculture, Jiyul Chang, Madhav P. Nepal
iLEARN Teaching Resources
In this teaching module, students will learn what Precision Agriculture is and how to apply drone into Precision Agriculture practices. To use data (images) taken by drone, students will learn the basic theory of Remote Sensing. Using images, students learn how to make NDVI (Normalized Difference Vegetation Index) maps and how to apply drone (remote sensing technique) in agriculture.
Distribution And Population Structure Of The Invasive Nitellopsis Obtusa (Desv. In Loisel.) J. Groves And Native Species Of Characeae In The Northeast U.S.A., Robin Sleith
Dissertations, Theses, and Capstone Projects
Freshwater ecosystems are some of the most biologically diverse environments on Earth. Billions of humans rely on functioning freshwater ecosystems for drinking water and many other services. These ecosystems are increasingly threatened by human impacts including nutrient pollution, invasive species, and climate change. Here I contribute four research chapters that investigate freshwater diversity and ecosystem threats using the Characeae, a family of freshwater green macroalgae, as a study system. Characeae are a diverse and ancient group with more than 500 extant species and a fossil history spanning at least 250 million years. These algae are macrophytes in freshwater ecosystems, and …
Island Invasion: The Silent Crisis In Hawaii, Sophia Janssen
Island Invasion: The Silent Crisis In Hawaii, Sophia Janssen
Pomona Senior Theses
Keeping out invasive species may, upon first review, seem like a trivial environmental cry from ecologists and deep environmentalists; a belated wish to return to an undeveloped world where nature was pristine. However invasive species create problems that impact all of us and can have far more severe consequences than changing a stunning landscape. These problems are heightened in islands like Hawaii, where the fragile ecosystems have developed over centuries of evolution and adaptation. The introduction of a disease-carrying mosquito can put the people of Hawaii at risk to many vector-born illnesses and create an epidemic, taking human life. The …
Relative Competitive Abilities, Intersexual Overyielding, And Population Sex Ratio Changes In A Bryophyte, Zachary Stanley
Relative Competitive Abilities, Intersexual Overyielding, And Population Sex Ratio Changes In A Bryophyte, Zachary Stanley
Theses and Dissertations--Biology
Unequal sex ratios are widespread in dioecious plants and understanding their cause is important to understanding fundamental aspects of their population dynamics, and yet what causes biased sex ratios in plants is still poorly understood. Competition experiments have been used in plants to predict the outcome of species interactions, but they have rarely been used to help explain sex ratio bias. This study used a response surface competition design to measure the relative competitive abilities of the sexes of the bryophyte Marchantia inflexa (a thallus liverwort of Marchantiaceae) to predict the outcome of competition before the onset of sexual reproductive …
A Catalog Of Orchid Species And Their Distribution In Mazumbai Forest Reserve, Tanga Region, Tanzania, Sierra Loomis
A Catalog Of Orchid Species And Their Distribution In Mazumbai Forest Reserve, Tanga Region, Tanzania, Sierra Loomis
Independent Study Project (ISP) Collection
Although orchids are common in Mazumbai Forest Reserve (MFR), there are limited resources on where they grow and how to identify them. The primary objective of this study is to create an updated catalog of orchids in MFR, using species abundance, richness and diversity of the orchids as indicators of where orchids prefer to grow in MFR. Orchid species vary greatly as altitude changes, making it important to survey orchids across different altitudes. Therefore, Mazumbai Forest was split into five different altitudinal bands spanning 1400 – 1900m and six 100 x 20m plots in each band were surveyed for both …
Yardwork: A Biography Of An Urban Place By Daniel Coleman, Vivian M. Hansen
Yardwork: A Biography Of An Urban Place By Daniel Coleman, Vivian M. Hansen
The Goose
Review of Daniel Coleman's Yardwork: A Biography of an Urban Place.
Genetic Diversity In An Invasive Clonal Plant? A Historical And Contemporary Perspective, Elliot D. Weidow
Genetic Diversity In An Invasive Clonal Plant? A Historical And Contemporary Perspective, Elliot D. Weidow
LSU New Orleans Theses and Dissertations
Introduced populations of Eichhornia crassipes (Pontederiaceae) possess extremely low levels of genetic diversity due to severe bottleneck events and clonal reproduction. While populations elsewhere have been well studied, North American populations of E. crassipes remain understudied. We used Amplified Fragment Length Polymorphism markers to assess genetic diversity and population structure in North American E. crassipes populations. Patterns of diversity over the past fifty years were analyzed using herbarium specimens. Furthermore, we sampled populations across the Gulf Coast of the United States throughout a year to determine contemporary genetic diversity and assess potential seasonal effects. Genetic diversity was found to be …
Oaks (Family: Fagaceae) Diversity From Moist Temperate Forests Of Lesser Himalayas, Pakistan, Sher Wali, Kishwar Sultana, Fida Muhammad Khan
Oaks (Family: Fagaceae) Diversity From Moist Temperate Forests Of Lesser Himalayas, Pakistan, Sher Wali, Kishwar Sultana, Fida Muhammad Khan
Journal of Bioresource Management
A detailed survey was conducted in five national parks and game reserves of Azad Jammu and Kashmir, Pakistan to assess the biodiversity of family Fagaceae. Identification of the species was done using literary sources and comparison of samples with herbaria from Quaid-i-Azam University, Islamabad and Pakistan Museum of Natural History, Islamabad, Pakistan. A total of eight different species belonging to two genera were identified, including Quercus spp., Castanea sativa, Quercus glauca, Quercus baloot, Quercus incana, Quercus velutina, Quercus alba and Quercus dilatata. The greatest biodiversity was found in Banjosa Game Reserve (BGR) and Tolipir National Park (TNP), while Pir …
Evolution Of Floral Morphology And Symmetry In The Miconieae (Melastomataceae), Maria Gavrutenko
Evolution Of Floral Morphology And Symmetry In The Miconieae (Melastomataceae), Maria Gavrutenko
Dissertations and Theses
Analyses of evolution of floral morphology and symmetry broaden our understanding of the drivers of angiosperm diversification. Integrated within a flower, labile floral characters produce different phenotypes that promote variable interactions with pollinators. Thus, investigation of floral evolution may help infer potential historic transitions in pollinator modes and ecological pressures that generated present diversity. This study aims to explore morphological evolution of flowers in Miconieae, a species-rich Neotropical tribe within family Melastomataceae. Despite a constrained floral plan, Melastomataceae manage to achieve a variety of floral traits appealing to diverse pollinator types, with majority of the species requiring specialized “buzz pollination” …
The Population Genetics Of Morro Bay Eelgrass (Zostera Marina), Julia Gardner Harencar
The Population Genetics Of Morro Bay Eelgrass (Zostera Marina), Julia Gardner Harencar
Master's Theses
Seagrass populations are in decline worldwide. Zostera marina (eelgrass), one of California’s native seagrasses, is no exception to this trend. In the last 8 years, Morro Bay, California has lost 95% of its eelgrass. Eelgrass is an ecosystem engineer, providing important ecosystem services such as sediment stabilization, nutrient cycling, and nursery habitats for fish. The failure of recent restoration efforts necessitates a better understanding of the causes of eelgrass decline in this estuary. Previous research on eelgrass in California has demonstrated a link between population genetic diversity and eelgrass bed health, ecosystem functioning, and resilience to disturbance and extreme climatic …
Investigation De Regeneración Natural De Plantas Vasculares En La Reserva Madrigal Del Podocarpus / Investigation Of Natural Regeneration Of Vascular Plants In The Madrigal Reserve Of The Podocarpus, Sy Baker
Independent Study Project (ISP) Collection
En el Sur de Ecuador, hay una historia larga de incendio que está asociada con la historia de la agricultura y ganadería a causa de las técnicas de tala y quema para despejar áreas para campos y también quemaduras intencionales para fertilizar los suelos y mejorar productividad agrícola (Fernandez et al 2015). En los últimos días de Noviembre de 2016, un incendio quemó campos, la Reserva Madrigal de Podocarpus, y parte del Parque Nacional Podocarpus en Loja, Ecuador—el enfoque de este estudio. En este estudio: (1) se registraron las especies y distribución de plantas pioneras y sobrevivientes, (2) la se …
Are Weevils Picky Eaters? Community Structure And Host Specificity Of Neotropical Saproxylic Beetles (Coleoptera: Curculionidae), Jhunior A. Morillo
Are Weevils Picky Eaters? Community Structure And Host Specificity Of Neotropical Saproxylic Beetles (Coleoptera: Curculionidae), Jhunior A. Morillo
Dissertations and Theses
Abstract Primary saproxylic beetles play a major role in forest nutrient cycling and making deadwood accessible to other decomposers. Understanding beetle host preferences and patterns of community assembly is critical for their conservation, and for predicting which species might become invasive. This project aims to investigate the ecological and host specificity, as well as the community composition of curculionids in a mosaic of old-growth (OG) and secondary forest on the Osa Peninsula, Costa Rica. The subfamily Scolytinae was expected to be the most species-rich and abundant. Ambrosia beetles were expected to have more generalist species than other curculionids. Old growth …
Influence Of Topography And Moisture And Nutrient Availability On Green Alder Function On The Low Arctic Tundra, Nt, Katherine Louise Black Ms., Jennifer Lynn Baltzer Dr.
Influence Of Topography And Moisture And Nutrient Availability On Green Alder Function On The Low Arctic Tundra, Nt, Katherine Louise Black Ms., Jennifer Lynn Baltzer Dr.
Theses and Dissertations (Comprehensive)
The Arctic has warmed by at least 3°C over the past 50 years and this rapid warming is expected to continue. Climate warming is driving the proliferation of shrubs across the tundra biome with implications for energy balance, climate, hydrology, nutrient cycling, and biodiversity. Changes in tundra plant water use attributable to shrub expansion are predicted to increase evapotranspirative water loss which may amplify local warming and reduce run-off. However, little is known about the extent to which shrubs will enhance evapotranspirative water loss in these systems. Direct measures of shrub water use are needed to accurately predict …
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) …
Do Novel Weapons That Degrade Mycorrhizal Mutualisms Explain Invasive Species Success?, Philip L. Pinzone Mr.
Do Novel Weapons That Degrade Mycorrhizal Mutualisms Explain Invasive Species Success?, Philip L. Pinzone Mr.
Biology Theses
Invasive plants often dominate novel habitats where they did not co-evolve with local species. Several hypotheses suggest mechanisms that explain increased exotic plant success, including 'novel weapons' and 'degraded mutualisms'. Japanese knotweed (Fallopia japonica) and European buckthorn (Rhamnus cathartica) are widespread plant invaders in North America that can dominate ecosystems. The goal of this study is to test whether these impacts are more consistent with novel weapons or degraded mutualism hypotheses. I examine tree seedling recruitment, (germination and initial survival) growth, (biomass) and mycorrhizal invasion (AMF content) as a function of F. japonica and R. cathartica …
Description Of Mesocriconema Ericaceum N. Sp. (Nematoda: Criconematidae) And Notes On Other Nematode Species Discovered In An Ericaceous Heath Bald Community In Great Smoky Mountains National Park, Usa, Thomas O. Powers, Peter Mullin, Rebecca Higgins, Timothy Harris, Kirsten S. Powers
Description Of Mesocriconema Ericaceum N. Sp. (Nematoda: Criconematidae) And Notes On Other Nematode Species Discovered In An Ericaceous Heath Bald Community In Great Smoky Mountains National Park, Usa, Thomas O. Powers, Peter Mullin, Rebecca Higgins, Timothy Harris, Kirsten S. Powers
Department of Plant Pathology: Faculty Publications
A new species of Mesocriconema and a unique assemblage of plant-parasitic nematodes was discovered in a heath bald atop Brushy Mountain in Great Smoky Mountains National Park. Mesocriconema ericaceum n. sp., a species with males, superficially resembles M. xenoplax. DNA barcoding with the mitochondrial COI gene provided evidence of the new species as a distinct lineage. SEM revealed significant variability in arrangement of labial submedian lobes, plates, and anterior and posterior annuli. Three other nematodes in the family Criconematidae were characterized from the heath bald. Ogma seymouri, when analyzed by statistical parsimony, established connections with isolates from north-eastern Atlantic …
Mapping Morels: Predicting The Locations Of Morchella Species Through Environmental Factors Using The Gis System, Emily M. Stanevicius
Mapping Morels: Predicting The Locations Of Morchella Species Through Environmental Factors Using The Gis System, Emily M. Stanevicius
Celebration of Learning
Morel mushrooms, Morechella esculenta and M. deliciosa, are known delicacies across the globe, ranging from exquisite dishes in French cuisine to Eastern palates such as Japanese Matsutake. According to literature, true morels diverged as their own genus about 129 million years, again which has led to the development of more than 177 species and have been part of the human diet since their beginning. However, the elusiveness of morels has contributed to the mushrooms infamy for rarity, and has even been known to sell for more than $40 per pound. This project seeks to aid in the search for morels …
The Chemical Constituents Of New Essential Oils From Endemic And Sub Endemic Plants Of Mongolian Gobi, Sanduin Shatar, Jordanka Stavena, Milka Todorova, Shataryn Altantsetseg
The Chemical Constituents Of New Essential Oils From Endemic And Sub Endemic Plants Of Mongolian Gobi, Sanduin Shatar, Jordanka Stavena, Milka Todorova, Shataryn Altantsetseg
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
The new essential oil-Endemic and sub endemic plants in Outer Mongolian Gobi were isolated by hydro distillation from the aerial parts of Brachanthemum gobicum Krasch, B. mongolicum Krach, B. mongolorum Grub., Asterothamnus centrali-asiaticus Novopork, A. molliusculus Novopork., Ajania trifida (Turcz) Tzvel, A. achilleoides (Turcz) Tzvel., Ferula ferulaeoides (Stend) Eug. Kor., Artemisia davajamczii Darijima., A. caespitosa Ldb, A. subchrysolepis Filat, A. schischkinii Krasch, A.intricata Franch, A.ordasica Krasch, A.gobica (Krasch) Grub., A. sphalerocephala Krasch that grown in wild in Outer Mongolian Gobi. The essential oils were analyzed by a combination of Capillary GC and GC-MS and their main constituents were described.
From Seed To Sky: Impacts Of Explosive Compounds On Vegetation Across Spatial And Developmental Scales, Stephen M. Via
From Seed To Sky: Impacts Of Explosive Compounds On Vegetation Across Spatial And Developmental Scales, Stephen M. Via
Theses and Dissertations
Explosive compounds are broadly distributed across the globe as a result of nearly two centuries of munitions use in warfare and military activities. Two explosive compounds have seen disproportionate use; RDX (hexahydro-1,3,5-trinitro-1,3,5-triazine) and TNT (2-methyl- 1,3,5-trinitrobenzene), being the most commonly found explosives in the environment. The effects of explosives on biota have been studied in great detail; however, there is a general lack of understanding with regard to broader ecological impacts of these contaminants. My dissertation objective was to follow the impacts of explosive compounds on vegetation across scales. Impacts on vegetation at the species scale alter community composition via …
Positive Interactions In Temperate And Tropical Alpine Plant Communities: The Role Of Facilitation In Species-Specific Interactions, Invasion, And Landscape-Scale Distribution, Nicole Hupp
Graduate Student Theses, Dissertations, & Professional Papers
No abstract provided.
When An Invasive Plant Fails To Invade, Stephen L. Young
When An Invasive Plant Fails To Invade, Stephen L. Young
West Central Research and Extension Center, North Platte
In 2012, much of the US Midwest was gripped in one of the most severe droughts on record. While conducting experimental fieldwork at a site in Nebraska during June of that year, I noticed a single musk thistle (Carduus nutans; Figure 1) that appeared to be in the bolt or early flowering stage, which is typical for the species at that time. Here, however, two things were unusual: this plant was less than 1 meter tall (with adequate moisture and light, musk thistle typically grows to heights of 1–2.5 meters before flowering), and was only 3 months old (the bolt …
The Pioneer Of Santa Rosa Island, Andrea Martinez, Michael Perez, Kathryn Mceachern, Sarah Chaney, Ken Niessen
The Pioneer Of Santa Rosa Island, Andrea Martinez, Michael Perez, Kathryn Mceachern, Sarah Chaney, Ken Niessen
STAR Program Research Presentations
Santa Rosa Island which is part of the Channel Islands in California has a ranching history that goes as far back as the year 1843. While rich in history, the island is no longer “rich” in native plant populations due to the sheep, cattle and other livestock that once occupied the island. As a result of these grazers that the ranchers livelihood depended on, a great disturbance in the native plant population took place. It is up to plants such as Baccharis pilularis, commonly known as Coyote brush, to assist these endangered and threatened plants to once again flourish …
Tallgrass Prairie Vegetation Response To Spring Fires And Bison Grazing, Stephen L. Winter, Brady W. Allred, Karen R. Hickman, Samuel D. Fuhlendorf
Tallgrass Prairie Vegetation Response To Spring Fires And Bison Grazing, Stephen L. Winter, Brady W. Allred, Karen R. Hickman, Samuel D. Fuhlendorf
School of Natural Resources: Faculty Publications
Spring fires in tallgrass prairie can create environmental conditions conducive to plant growth in the subsequent growing season. Following fires, burned areas can also be attractive to grazing animals such as bison (Bison bison). Sustained grazing activity within recently burned areas can alter vegetation structure relative to nearby landscape patches that haven’t burned recently. In 2007, we collected data on bison grazing activity, vegetation structure, and the growth and reproduction of a perennial forb, Arnoglossum plantagineum, in Oklahoma tallgrass prairie. We compared these variables in landscape patches that had burned in the spring of 2007 to measurements …
Water Use And Water Tolerance In The Riparian Species American Sycamore (Plantanus Occidentalis L.) And How Its Physiology Compares To The Coexisting Black Willow (Salix Nigra Marshall), Eric Duncan
Dissertations, Theses and Capstone Projects
This study set out to compare aspects of water use and tolerance to inundation and drought of two riparian tree species, Platanus occidentalis L. and Salix nigra Marshall. The main goal of the study was to better understand the two species and assess the suitability of P. occidentalis for use in riparian restoration. To accomplish this, potted individuals were subjected to treatments of drought, inundation, or control, under greenhouse conditions, and separately, in order to estimate water use in trees, season-long diurnal measurements of sap flux (using Granier type thermal dissipation probes) were determined in situ for trees growing in …
Ficotylus Laselvae N. Sp. (Tylenchomorpha: Anguinidae) Associated With Ficus Colubrinae In Costa Rica, Robin M. Giblin-Davis, Natsumi Kanzaki, Kerrie A. Davies, Weimin Ye, Yongsan Zeng, Barbara J. Center, Alejandro Esquivel, Thomas O. Powers
Ficotylus Laselvae N. Sp. (Tylenchomorpha: Anguinidae) Associated With Ficus Colubrinae In Costa Rica, Robin M. Giblin-Davis, Natsumi Kanzaki, Kerrie A. Davies, Weimin Ye, Yongsan Zeng, Barbara J. Center, Alejandro Esquivel, Thomas O. Powers
Department of Plant Pathology: Faculty Publications
Ficotylus laselvae n. sp. was recovered from under the bracts of figs (syconia) of Ficus colubrinae from La Selva, Costa Rica, during a survey of nematode rainforest biodiversity and is described herein. This is only the second report of an association between the nematode suborder Tylenchina and the sycones of figs. Previous reports of most nematode associates of the sycones of figs have been from the lumen and involved transmission by female fig wasp pollinators (Agaonidae) during pollination/oviposition (e.g., Schistonchus and Parasitodiplogaster spp.). The association between F. laselvae n. sp. and Ficus colubrinae may involve an invertebrate host, …
Systematics, Climate, And Ecology Of Fossil And Extant Nyssa (Nyssaceae, Cornales) And Implications Of Nyssa Grayensis Sp. Nov. From The Gray Fossil Site, Northeast Tennessee, Nathan R. Noll
Electronic Theses and Dissertations
The Late Hemphillian (latest Miocene or earliest Pliocene, 7-4.5 Ma) Gray Fossil Site in northeastern Tennessee is interpreted to represent a lacustrine paleokarst fed by a river or stream. This research focuses on the morphological and systematic relations of Nyssa endocarps (fruit pits) from the fossil site to extinct and extant Nyssa species. A combination of metric and nonmetric traits allows recognition of a new species: Nyssa grayensis sp. nov. This fossil species shares the most similarities with the extant Nyssa ogeche Bartram ex Marshall from southeast North America and the Eocene fossil Nyssa eolignitica Berry from western Tennessee. Affinities …
Propagación In Vitro De Mammillaria Schiedeana Schiedeana (Cactaceae), Subespecie Endémica Y Amenazada De Extinción De La Barranca De Metztitlán, Hidalgo, Daniela Soria-Campos, Ana Laura López-Escamilla, Laura Patricia Olguín-Santos
Propagación In Vitro De Mammillaria Schiedeana Schiedeana (Cactaceae), Subespecie Endémica Y Amenazada De Extinción De La Barranca De Metztitlán, Hidalgo, Daniela Soria-Campos, Ana Laura López-Escamilla, Laura Patricia Olguín-Santos
Estudios científicos en el estado de Hidalgo y zonas aledañas
Se reporta por primera vez la micropropagación de la subespecie Mammillaria schiedeana schiedeana, cactácea mexicana considerada como amenazada de extinción por la Norma Oficial Mexicana. Se obtuvo la formación de brotes por activación areolar utilizando explantes longitudinales procedentes de brotes regenerados de un ciclo previo de cultivo y a partir de plántulas germinadas in vitro los cuales se sembraron en medio basal Murashige y Skoog (MS) suplementado con 6-bencilaminopurina (BA) y ácido α-naftalenacético (ANA) a diferentes concentraciones. La producción de brotes en el medio de proliferación se evaluó después de dos meses. La mejor concentración para la formación de …
The Loss Of Species: Mangrove Extinction Risk And Geographic Areas Of Global Concern, Beth A. Polidoro, Kent E. Carpenter, Lorna Collins, Norman C. Duke, Aaron M. Ellison, Joanna C. Ellison, Elizabeth J. Farnsworth, Edwino S. Fernando, Kandasamy Kathiresan, Nico E. Koedam, Suzanne R. Livingstone, Toyohiko Miyagi, Gregg E. Moore, Vien Ngoc Nam, Jin Eong Ong, Jurgenne H. Primavera, Serverino G. Salmo, Jonnell C. Sanciango, Sukristijono Sukardjo, Yamin Wang, Jean Wan Hong Yong
The Loss Of Species: Mangrove Extinction Risk And Geographic Areas Of Global Concern, Beth A. Polidoro, Kent E. Carpenter, Lorna Collins, Norman C. Duke, Aaron M. Ellison, Joanna C. Ellison, Elizabeth J. Farnsworth, Edwino S. Fernando, Kandasamy Kathiresan, Nico E. Koedam, Suzanne R. Livingstone, Toyohiko Miyagi, Gregg E. Moore, Vien Ngoc Nam, Jin Eong Ong, Jurgenne H. Primavera, Serverino G. Salmo, Jonnell C. Sanciango, Sukristijono Sukardjo, Yamin Wang, Jean Wan Hong Yong
Biological Sciences Faculty Publications
Mangrove species are uniquely adapted to tropical and subtropical coasts, and although relatively low in number of species, mangrove forests provide at least US $1.6 billion each year in ecosystem services and support coastal livelihoods worldwide. Globally, mangrove areas are declining rapidly as they are cleared for coastal development and aquaculture and logged for timber and fuel production. Little is known about the effects of mangrove area loss on individual mangrove species and local or regional populations. To address this gap, species-specific information on global distribution, population status, life history traits, and major threats were compiled for each of the …