Neufeld, Howard

asu

There are 21 item/s.

TitleDateViewsBrief Description
SHORT TERM TEMPORAL TRENDS IN GENE EXPRESSION IN SENSITIVE AND TOLERANT SOYBEAN GENOTYPES EXPOSED TO OZONE 2015 632 Soybean (Glycine max) is sensitive to O3. My work aimed to identify molecular mechanisms associated with the differential tolerance to O3 among tolerant (Fiskeby III) and sensitive (Mandarin Ottawa) soybean genotypes. Short-term changes in gene expre...
Growth and Ecophysiological Responses of Fraser Fir (Abies Fraseri) Christmas Trees Along an Elevational Gradient 2015 1073 Fraser fir (Abies fraseri) Christmas tree production is a $100 million dollar/year industry in North Carolina, but the future of these trees may be threatened by predicted global climate change. To evaluate how this species will respond to climate dr...
Using An Elevation Gradient As A Surrogate For Climate Warming To Understand The Effects On Wood Anatomy And Water Relations Of Fraser Fir (ABIES FRASERI) Christmas Trees 2016 1188 Fraser fir (Abies fraseri) Christmas trees are an important part of the agro-economyof Western North Carolina, accounting for $100 million dollars in annual sales. Inorder to assess how warming-driven stressors of climate change could affect thesetre...
An Unusual Succulent In The Appalachian Understory: Light Capture And Drought Tolerance In Sedum ternatum 2017 1288 Sedum ternatum is a succulent plant native to the Appalachian forest understory. This study first examines its use of understory sunlight throughout the year by measuring field photosynthesis, growth, and pigment production. Leaf thickness, succulenc...
Habitat Distribution And Frond Reorientation As Photoprotection And Drought-Avoidance Mechanisms In Christmas Fern (Polystichum Acrostichoides) In The Southern Appalachian Mountains 2017 1028 Christmas fern (Polystichum acrostichoides (Michx.) Schott) is a ubiquitous wintergreen herb found in the forests of the Appalachian Mountains, yet it is distributed asymmetrically on the landscape, favoring north-facing slopes and shady stream banks...
A Study Of Autumn Olive (Elaeagnus Umbellata) Phenology And Associated Physiological Traits That May Facilitate Its Invasion Of The Understory Of A Southern Appalachian Forest 2018 1638 Elaeagnus umbellata, better known as Autumn Olive (AO), is an exotic tree species that has invaded much of the United States. It grows in a variety of habitats, but little is known about its ability to invade and persist in forest understories, espec...
Comparative Ecophysiology Of Two High-Elevation Southern Appalachian Conifers: The Importance Of The Winter Season 2018 595 Southern Appalachian spruce-fir forests are glacial relicts, located as disjunct “islands in the sky” on the highest peaks in this region. Fraser fir (Abies fraseri), an endemic and valuable Christmas tree, dominates at elevations >1650 m while red s...
The Effects Of Ageing On The Hydraulic Conductivity Of GALAX URCEOLATA (POIR.) 2002 30 Galax urceolata (Poir.) is a rhizomatous evergreen herb distributed throughout the understory of deciduous forests of the southern Appalachian mountains. Galax leaves persist for approximately three years, decreasing in their ability to assimilate ca...
Seasonal Development Of Ozone-Induced Foliar Injury On Tall Milkweed (ASCLEPIAS EXALTATA) In Great Smoky Mountains National Park 2003 111 The southeastern United States, including Great Smoky Mountains National Park (GRSM), experience high ozone concentrations. These concentrations are high enough to cause visible injury on a wide variety of plants in GRSM. One plant that is particular...
The Effects Of Ambient Pollutants On The Physiology And Morphology Of Mature Red Spruce 1993 31 Two stands of red spruce (Picea rubens Sarg.) trees growing in close proximity to each other on Whitetop Mountain in Virginia exhibit varying degrees of decline symptoms. The declining stand experiences higher precipitation and deposition amounts tha...
Factors Affecting Growth And Reproduction In The Invasive Grass Microstegium Vimineum 1998 37 Microstegium vimineum, an invasive grass from Japan and elsewhere in Asia, has become a common pest in forest understories throughout the eastern U.S. Its presence is of particular concern in areas such as Great Smoky Mountains National Park, where i...
Functional Role Of Anthocyanins In High Light Winter Leaves Of The Evergreen Herb, Galax Urceolata 2004 124 Galax urceolata is an evergreen understory herb whose leaves exhibit a dramatic change in color from green to red under high light, low temperature conditions. This color change has been attributed to anthocyanin sythesis in the outermost mesophyll c...
Microsatellite Marker Development In Allium Tricoccum Populations From The Southern Appalachian Mountains 2021 69 Allium tricoccum Aiton is a widely foraged spring ephemeral that has become threatened by overharvesting in recent decades. The life cycle of A. tricoccum is unconducive to the intensive harvests experienced by populations in the southern Appalachian...
Impacts Of Polyploidy And Subsequent Natural Selection On The Ecophysiology Of Solidago Altissima 2021 79 The evolutionary importance of polyploidy in plants is still a subject of much research. Polyploidy could be an evolutionary dead end, or it could lead to reproductive isolation and creation of new species. Goldenrod (Solidago altissima) is a North A...
The Influence Of Water Relations On The Response Of Cutleaf Coneflower (RUDBECKIA LACINIATA) To Ozone 2007 15 Ozone is the most important gaseous air pollutant causing foliar injury to plants. Cutleaf coneflower (Rudbeckia laciniata var. digitata), a native perennial sunflower in Great Smoky Mountains National Park (GSMNP), is sensitive to ozone and has the ...
Factors Affecting The Ability Of Rosa Multiflora To Invade And Persist In The Understory Of Southern Appalachian Forests 2019 314 Rosa multiflora (MR) is an invasive shrub brought to the United States from east Asia in the 1800s. MR is shade intolerant, but recently, has invaded the forest understory in the southern Appalachians, raising the question of how it persists under sh...
Vegetation Responses To Grazing In A High Elevation, Southern Appalachian Wet Meadow 2000 27 This study was designed to test the hypothesis that grazing by cattle affects aboveground net primary productivity (ANPP) and community structure in wetland bogs. My specific study focused on first year changes in Cold Prong Bog, a wet meadow located...
Physiological Effects Of Ozone Air Pollution On RUDBECKIA LACINIATA In Great Smoky Mountains National Park 2005 16 Cutleaf coneflower, Rudbeckia laciniata, is an herbaceous perennial wildflower that is a bioindicator for ozone and grows abundantly in the highest elevations of Great Smoky Mountains National Park (GRSM). This study used populations from Clingman's ...
Community And Ecosystem Responses Following Fire In The Linville Gorge Wilderness Area 2004 20 Fire has been a natural occurrence in the southern Appalachians for millennia, as evidenced by the evolution and persistence of fire-dependent species . . . In the fall of 2000, a wildfire burned much of the Linville Gorge Wilderness Area (LGWA), pro...
Evergreen Broadleaf Ecophysiology Under Rapid Light Fluctuations And Transitional Winter Conditions In The Southern Appalachian Mountains 2020 260 The southern Appalachian Mountains experience harsh winter conditions, including extremely cold air and soil temperatures, stochastic precipitation, often in the form of snow, high light, and strong winds. All of these contribute to the ecophysiologi...
Ecophysiological Adaptations Of Galax Aphylla To The Understory Of Southern Appalachian Forests 1995 189 Galax aphylla is a common, evergreen, clonal herb found in the understory of forests in the southern Appalachian mountains. Little is known of the ecophysiology of galax or its adaptations to growing in the forest understory. The objectives of this s...