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Articles 1 - 30 of 201
Full-Text Articles in Life Sciences
Goodyera Pubescens (Willd.) R. Br., B. N. Mcknight
Goodyera Pubescens (Willd.) R. Br., B. N. Mcknight
Specimens by Name
No abstract provided.
An Analysis Of Cadmium And Lead Uptake In Hydroponically Grown Corn Seedlings, Julie Jones Medlin
An Analysis Of Cadmium And Lead Uptake In Hydroponically Grown Corn Seedlings, Julie Jones Medlin
Dissertations
The purpose of this study was to analyze selected growth parameters of hydroponically grown corn seedlings (Zea mays) in relation to the uptake of the heavy metals, lead and cadmium. The corn seedlings were treated with various concentrations of lead and cadmium at different levels of pH, and phosphate and ferric ion concentrations. Root and shoot lengths were measured before and after heavy metal treatment to determine the relative growth in the different treatment solutions. Wet and dry weights were also obtained. The plant material was digested with nitric and perchloric acids in preparation for analysis for heavy metal content …
Acer Saccharinum L., John E. Ebinger
Aplectrum Hyemale (Muhl. Ex Willd.) Torr., John E. Ebinger
Aplectrum Hyemale (Muhl. Ex Willd.) Torr., John E. Ebinger
Specimens by Name
No abstract provided.
Phyla Lanceolata (Michx.) Greene, John E. Ebinger
Phyla Lanceolata (Michx.) Greene, John E. Ebinger
Specimens by Name
No abstract provided.
Spiranthes Cernua (L.) Rich., John Gerard
Acer Saccharinum L., John E. Ebinger
Acer Saccharinum L., John E. Ebinger
The Prairie Naturalist Volume 12, Numbers 3 And 4. September–December 1980
The Prairie Naturalist Volume 12, Numbers 3 And 4. September–December 1980
The Prairie Naturalist
THE FLORA AND SANDHILLS PRAIRIE COMMUNITIES OF ARAPAHO PRAIRIE, ARTHUR COUNTY, NEBRASKA ▪ K. H. Keeler, A. T. Harrison and L. S. Vescio
USE OF ULTRASONIC SOUND TO ESTIMATE BODY FAT DEPOTS IN THE MALLARD ▪ G. A. Baldassarre, R. J. Whyte and E. G. Bolen
NORTHERN MOCKINGBIRD BREEDING IN NORTH DAKOTA ▪ D. Child, J. Fontaine, T. Gatz, M. Johnson and J. Oswald
SPRING ARRIVAL OF BIRDS AT WOODWORTH, NORTH DAKOTA ▪ K. F. Higgins, L. M. Kirsch, and J. M. Callow
HYBRIDIZATION AND TAXONOMIC STATUS OF GREATER PRAIRIE CHICKENS AND SHARP-TAILED GROUSE (HYBRIDIZATION IN GROUSE) ▪ D. W. …
Transpiration And Co2 Fixation Of Selected Desert Shrubs As Related To Soil-Water Potential, S. B. Clark, J. Letey Jr., O. R. Lunt, A. Wallace, G. E. Kleinkopf, E. M. Romney
Transpiration And Co2 Fixation Of Selected Desert Shrubs As Related To Soil-Water Potential, S. B. Clark, J. Letey Jr., O. R. Lunt, A. Wallace, G. E. Kleinkopf, E. M. Romney
Great Basin Naturalist Memoirs
In desert plants, transpiration rates decreased before photosynthetic rates when plants were entering a period of water stress. This may have adaptive consequences. A difference of -5 bars in the soil-moisture potential had considerable importance in reducing the rate of transpiration. In Helianthus annuus L. (sunflower) the photosynthetic rate decreased before the transpiration rate in contrast to Great Basin-Mojave Desert plants, and the changes occurred with a -1 bar difference in soil-moisture potential. Morphological changes in three desert plant species [Artemisia tridentata Nutt., Ambrosia dumosa (Gray) Payne, Larrea tridentata (Ses. Moc. ex DC) Cov.] as the soil-moisture potential decreased …
Parent Material Which Produces Saline Outcrops As A Factor In Differential Distribution Of Perennial Plants In The Northern Mojave Desert, A. Wallace, E. M. Romney, R. A. Wood, A. A. El-Ghonemy, S. A. Bamberg
Parent Material Which Produces Saline Outcrops As A Factor In Differential Distribution Of Perennial Plants In The Northern Mojave Desert, A. Wallace, E. M. Romney, R. A. Wood, A. A. El-Ghonemy, S. A. Bamberg
Great Basin Naturalist Memoirs
An area of 0.46 km2 divided into six zones in the northern Mojave Desert transitional with the Great Basin Desert has been studied. Diversity is high among the perennial plant species within the 0.46 km2 area. Common species for the two deserts that are present in the area studied are Atriplex confertifolia (Torr. & Frem.) S.Wats., Ceratoides lanata (Pursh) J. T. Howell, Grayia spinosa (Hook.) Moq., Ephedra nevadensis S. Wats. Some other species present include Lycium andersonii A. Gray, Lycium pallidum Miers, Ambrosia dumosa (A. Gray) Payne., Larrea tridentata (Sesse & Moc. ex DC) Cov., Acamptopappus shockleyi A. …
Mineral Compostition Of Atriplex Hymenelytra Growing In The Northern Mojave Desert, A. Wallace, E. M. Romney, R. B. Hunter, J. E. Kinnear, G. V. Alexander
Mineral Compostition Of Atriplex Hymenelytra Growing In The Northern Mojave Desert, A. Wallace, E. M. Romney, R. B. Hunter, J. E. Kinnear, G. V. Alexander
Great Basin Naturalist Memoirs
Fifty samples of Atriplex hymenelytra (Torr.) S. Wats, were collected from several different locations in southern Nevada and California to test variability in mineral composition. Only Na, V, P. Ca, Mg, Mn, and Sr in the samples appeared to represent a uniform population resulting in normal curves for frequency distribution. Even so, about 40 percent of the variance for these elements was due to location. All elements differed enough with location so that no element really represented a uniform population. The coefficient of variation for most elements was over 40 percent and one was over 100 percent. The proportion of …
Vitis Palmata Vahl, John E. Ebinger
Vitis Aestivalis F.Michx., John E. Ebinger
Vitis Vulpina L., John E. Ebinger
Vitis Cinerea Noronha, John E. Ebinger
Fraxinus Pennsylvanica Marsh., John E. E. Ebinger
Fraxinus Pennsylvanica Marsh., John E. E. Ebinger
Specimens by Name
No abstract provided.
Vitis Cinerea Noronha, John E. Ebinger
Spiranthes Cernua (L.) Rich., John E. Ebinger
Vitis Vulpina L., John E. Ebinger
Verbena Urticifolia L., Kathleen Andrews
Cannabis Sativa L., Kathleen Andrews
Ampelopsis Cordata Michx., John E. Ebinger
Verbena Rigida Spreng., Oscar Gupton
Vitis Cinerea Noronha, John E. Ebinger
Vitis Riparia Michx., John E. Ebinger