Download or read book Sago Pondweed Potamogeton Pectinatus L written by Harold A. Kantrud and published by . This book was released on 1990 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sago pondweed is a submerged macrophyte of nearly cosmopolitan distribution. The plant is of worldwide importance as a waterfowl food but also can be a nuisance in irrigation canals and recreational areas. Future research should concentrate on (1) determining, in a variety of wetland types, the causes of light-limiting turbidity that often suppresses sago growth, (2) understanding the ways in which human activities on and near wetlands affect sago production, and (3) developing reliable and predictable techniques to stimulate sago production for waterfowl by using water level manipulations and other means, in a variety of environmental settings.
Download or read book Sago Pondweed Potamogeton Pectinatus L written by Harold A. Kantrud and published by . This book was released on 198? with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Reproduction and Mode of Spread of Sago Pondweed Potamogeton Pectinatus L in Irrigation System written by Alex G. Ogg and published by . This book was released on 1966 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nine experiments were conducted during 1964 and 1965 to study the methods of reproduction and mode of spread of sago pondweed (Potamogeton pectinatus) in irrigation systems. Frequent treatments of sago pondweed foliage with aromatic solvent greatly reduced the number of tubers in the substratum of an irrigation canal. However, complete eradication of all tubers in one irrigation season was not obtained. Ecological investigations revealed that sago pondweed was capable of invading and becoming established in new irrigation channels in one season. The propagules responsible for the establishment of new infestations were tubers and plant fragments. Considerable numbers of sago pondweed seed were transported into the new channels by the water, but no seedlings were found. Sago pond-weed tubers survived freezing temperatures under field conditions. Subsequent studies in the laboratory showed that sago pondweed tubers could become somewhat hardened or conditioned to withstand freezing temperatures. Removal of the parent tuber did not affect the survival of emerged shoots nor did it prevent the growth of excised sprout tips. The main portion of the tuber appeared to have a function other than initiating growth. The study of shoot emergence from tubers indicated a relationship between the weight of the tuber and the depth from which the shoot would emerge. The main portion of the tuber, whose dry weight consists primarily of carbohydrates, may function as a food reserve enabling the shoot to emerge from a considerable depth in the soil. Sago pondweed seeds that had overwintered in a canal bottom gave 15 percent germination in a greenhouse aquarium after a 50-day period. Seeds that had passed through the digestive tracts of wild-ducks germinated abundantly. However, if the seeds were held in the digestive tract for more than three days, no germination occurred. The storage of sago pondweed seeds at different conditions of temperature and moisture for different periods of time resulted in significant differences in the percentages of germination. Storage of seed in water at 0.0 degrees C. for 12 days resulted in the highest percentage of germination. The seed germination studies indicated that the importance of seed in the spread of sago pondweed in irrigation systems may be underestimated.
Download or read book Ecology of Sago Pondweed Potamogeton Pectinatus L Communities written by Alden L. Kollman and published by . This book was released on 1974 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Production and Waterfowl Utilization of Sago Pondweed Potamogeton Pectinatus on the Marshes of the Bear River in Northern Utah written by Robert Leon Craner and published by . This book was released on 1965 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Factors Limiting the Success of Sago Pondweed Stuckenia Pectinata in the Heron Lake System Minnesota written by Morgan Case and published by . This book was released on 2003 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Resource Publication written by and published by . This book was released on 1987 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Effects of Suspended Sediment on Growth of Submersed Pondweeds written by Norman E. Otto and published by . This book was released on 1960 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wildflowers and Other Plants of Iowa Wetlands 2nd edition written by Sylvan T. Runkel and published by University of Iowa Press. This book was released on 2015-04-15 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: Originally published in 1999, Wildflowers and Other Plants of Iowa Wetlands was the first book to focus on the beauty and diversity of the wetland plants that once covered 1.5 million acres of Iowa. Now this classic of midwestern natural history is back in print with a new format and all-new photographs, just as Iowa’s wetlands are getting the respect and attention they deserve. In clear and accessible prose, authors Sylvan Runkel and Dean Roosa provide common, scientific, and family names; the Latin or Greek meaning of the scientific names; habitat and blooming times; and a complete description. Plants are presented by habitat (terrestrial or aquatic), then refined by habit (e.g., emergent, floating, or submerged) or taxonomic group (e.g., ferns and allies or trees, shrubs, and vines). Particularly interesting is the information on the many ways in which Native Americans and early pioneers used these plants for everything from pain relief to tonics to soup and the ways that wildlife today use them for food and shelter. Each of the more than 150 species accounts is accompanied by a brilliant full-page color photograph by botanist Thomas Rosburg, who has also updated the nomenclature and descriptions for certain species. After decades of being considered an enemy of the settler, the farmer, and the citizen, Iowa’s wetlands have come into their own. We are finally caring for these important habitats. Runkel and Roosa’s updated field companion will be a valuable guide to today’s preservation and restoration initiatives.
Download or read book Ambient aquatic life water quality criteria for atrazine written by and published by DIANE Publishing. This book was released on 2003 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water quality Characteristics of the Columbia Plateau Regional Aquifer System in Parts of Washington Oregon and Idaho written by W. C. Steinkampf and published by . This book was released on 1989 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Upper Mississippi River Illinois Waterway System Navigation Feasibility Study Integrated Feasiblity Report written by and published by . This book was released on 2004 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reconnaissance Investigation of Water Quality Bottom Sediment and Biota Associated with Irrigation Drainage in the Sun River Area West central Montana 1986 87 written by J. R. Knapton and published by . This book was released on 1988 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water resources Investigations Report written by and published by . This book was released on 1999 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dispersals written by Jessica J. Lee and published by Catapult. This book was released on 2024-03-12 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: A prize-winning memoirist and nature writer turns to the lives of plants entangled in our human world to explore belonging, displacement, identity, and the truths of our shared future A seed slips beyond a garden wall. A tree is planted on a precarious border. A shrub is stolen from its culture and its land. What happens when these plants leave their original homes and put down roots elsewhere? In fourteen essays, Dispersals explores the entanglements of the plant and human worlds: from species considered invasive, like giant hogweed; to those vilified but intimate, like soy; and those like kelp, on which our futures depend. Each of the plants considered in this collection are somehow perceived as being ‘out of place’—weeds, samples collected through imperial science, crops introduced and transformed by our hand. Combining memoir, history, and scientific research in poetic prose, Jessica J. Lee meditates on the question of how both plants and people come to belong, why both cross borders, and how our futures are more entwined than we might imagine.
Download or read book Geological Survey Bulletin written by Geological Survey (U.S.) and published by . This book was released on 1983 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reconnaissance Investigation of Water Quality Bottom Sediment and Biota Associated with Irrigation Drainage in the Kendrick Reclamation Project Area Wyoming 1986 87 written by David Allen Peterson and published by . This book was released on 1988 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
