Download or read book Effects of Soil Nutrient Characteristics Moisture and Light on the Growth Response and Resource Allocation of Phalaris Arundinacea an Invasive Wetland Plant written by Jason P. Martina and published by . This book was released on 2006 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Light Availability and Resourse Subsidy on the Vegetative Spread of Phalaris Arundinacea L Reed Canarygrass in Wetland written by Debbie Maurer and published by . This book was released on 2001 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Natural Areas Journal written by and published by . This book was released on 2006 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Light Availability and Resource Subsidy on the Vegetative Spread of Phalaris Arundinacea L Reed Canarygrass in Wetlands written by Debbie Maurer and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Flooding and Plant Growth written by Bozzano G Luisa and published by Academic Press. This book was released on 2012-12-02 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flooding and Plant Growth covers the state of knowledge and opinion on the effects of flooding of soil with fresh or salt water on the metabolism and growth of herbaceous and woody plants. The book discusses the extent, causes, and impacts of flooding; the effects of flooding on soils and on the growth and metabolism of herbaceous plants; and the responses of woody plants to flooding. The text also describes the effect of flooding on water, carbohydrate, and mineral relations, as well as the effects of flooding on hormone relations and on plant disease. The adaptations to flooding with fresh water and the adaptations of plants to flooding with salt water are also encompassed. Agronomists, biochemists, plant ecologists, engineers, foresters, horticulturists, plant anatomists, meteorologists, geneticists, plant breeders, plant physiologists, and landscape architects will find the book invaluable.
Download or read book Bibliography of Agriculture with Subject Index written by and published by . This book was released on 2000 with total page 1010 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecohydrology Effects of an Invasive Grass Phalaris Arundinacea on Semi arid Riparian Zones written by Adam D. Gebauer and published by . This book was released on 2013 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Riparian areas (floodplains) provide key ecological functions that are linked to the ecohydrology however; they are particularly susceptible to invasion by alien species. In much of the western United States, riparian zones are shifting from native woody and herbaceous species to invasive grass dominated ecosystems that may alter hydrology, including changes to stream flow. Compared to the woody species they often replace, dense grass stands may have higher rates of growth (productivity) and water loss through leaves (transpiration), yet may access shallower water sources and thus reduce stream flow. In eastern Washington, many streams experience low flow that degrades water quality, concentrates pollutants, and reduces habitat. Most of these streams' riparian zones have extensive stands of reed canary grass (Phalaris arundinacea). Reed canary grass was historically planted for erosion control and as a forage crop, but its ability to invade and create monotypic stands has allowed it to out compete native vegetation in riparian areas throughout much of the temperate United States. My goal is to determine the effect of reed canary grass on the ecohydrology of riparian zones along low order streams in a semi-arid region. I conducted vegetation, groundwater, and stream flow surveys at nine sites along four watersheds to determine community composition and hydrologic regime measured the length of the growing season for nine riparian species. I measured the amount of biomass and calculated the amount of photosynthetic surface for dense stands of nine riparian species. The amount of water used by different species was determined by measuring transpiration rates of reed canary grass and other riparian species throughout the growing season. Hydrogen and oxygen isotopes from different water sources (stream water and deep groundwater) were used to determine the proportion of water sources use by different plants species. Reed canary grass was found with greater cover than other riparian species on low elevation geomorphic positions in the riparian zone. It had the longest growing season by two weeks. Although its transpiration rates per unit leaf area are not exceptional compared to other species, its high specific leaf area and ability to produce dense stands of photosynthetic biomass results in more photosynthetic surface through which to transpire water than any other riparian species. Reed canary grass was found to rely heavily on surface water sources along different elevations in the riparian zone. My results implicate reed canary grass as a major factor in the regional low stream flow during the growing season. Although the presence of reed canary grass can add some benefits to a riparia buffer, I present strong evidence that it is altering the ecohydrology of these ecosystems. The management of this grass, particularly in a semi-arid region, could improve water quality and quantity"--Document.
Download or read book Salal Complex written by P. G. Comeau and published by . This book was released on 2002-01-01 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: This operational summary provides information about vegetation management in the salal complex. This complex is almost completely comprised of salal (Gaultheria shallon). Herbaceous and other shrubby species constitute only a very minor component of this complex. Topics covered in this summary include development of the complex and its interaction with crop trees; non-timber values and pre-harvest considerations; and management strategies for current and backlog sites.
Download or read book Long term Managed Flooding to Control Invasive Phalaris Arundinacea L and Help Restore Native Vegetation in an Urban Palustrine Wetlands Ecosystem written by and published by . This book was released on 2018 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: We sought to determine the effects of 13 years of hydrologic management on the wetland plant community in Smith and Bybee Wetlands Natural Area (SBW), an 809 ha palustrine wetland complex in north Portland, Oregon. Previous management efforts resulted in an altered hydrologic regime; historically high water levels in spring and low water levels in fall were replaced by persistent water levels with minimal annual variations. A water control structure was installed in 2003 to better approximate historic seasonal hydrologic changes to reduce invasive Phalaris arundinacea (reed canarygrass) cover and promote native wetland vegetation growth. Vegetation monitoring has been carried out in three phases since project initiation (2003-2004, 2008-2009, and 2015-2016) to assess restoration efforts. Using lineintercept and differential leveling methods, we measured 25 randomly established transects ranging from 21.5m to 280.7m (mean: 92.87m) during monitoring years for vegetation and elevation to determine changes in vegetation in relation to seasonally varying water levels. Overall, reed canarygrass percent cover has decreased from 46.5% in 2003 to 17.6% in 2016 across all transect elevations. Reed canarygrass has been replaced significantly by seven native plant species with ≥ 5% cover on site. Native Persicaria amphibia (smartweed) has replaced reed canarygrass as the dominant species on site, increasing in cover from 20.2% in 2003 to 67.9% in 2016. Smartweed also replaced all other common species on site except for Salix lucida lasiandra. Other common native species (Bidens cernua, Eragrostis hypnoides, Eleocharis palustris, and Cyperus sp.) experienced earlier declines in cover between 2003 and 2009, but have since increased in cover primarily in low transect elevations in relation to lower inundation rates during their early growing seasons. Species diversity has declined significantly since 2003. Diversity was inversly correlated with reed canarygrass presence in 2003. These findings demonstrate that hydrologic management of a wetland system can be effective at reducing the presence of reed canarygrass and increasing native wetland vegetation by recreating historic hydrologic conditions that include increased inundation during the early growing season of reed canarygrass. Initial long inundation periods were most effective at reducing reed canarygrass, but did not need to be maintained indefinitely. Shortening and varying the inundation periods in later years after reed canarygrass has been reduced can be effective at maintaining lower levels of reed canarygrass while simultaneously increasing native species cover.
Download or read book Variability in the Phenolic Content of Invasive and Non invasive Emergent Wetland Plants written by Melissa M. Maurer and published by . This book was released on 2014 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The colonization of wetlands by invasive plant species negatively impacts vegetation structure, nutrient and organic matter cycling, and ultimately alters native wetland ecosystem functions and services. It is unclear if the spread of invasive species can be attributed to their chemical composition. To further understand mechanisms of plant invasion, it is important to assess secondary chemistry of aggressive invaders. Phenolic compounds are important due to their diverse functionality including pathogen resistance, herbivore deterrence, and allelopathic interference. I conducted a broad field survey and a field experiment to better understand the importance and variability of wetland plant phenolic compounds and the relationship between abiotic and biotic environmental factors. I examined the relationship between leaf phenolic content and environmental conditions for 21 noninvasive and invasive plant species from ten sites. The environmental factors included soil moisture, extractable nitrate and ammonium, and total phosphorus, along with herbivory, and neighboring plant cover. The field experiment targeted two invasive species of cattail (Typha latifolia, T. angustifolia) in created wetlands at the Rochester Institute of Technology and High Acres Nature Area. I manipulated nutrient availability and herbivore pressure to investigate effects on growth and phenolic content. There was no predictable difference between invasive and noninvasive plants, but there were differences among sites for each species. The difference among sites for invasive species was more pronounced, with significant relationships with different combinations of abiotic and biotic factors, depending on the species. For four of the invasive species examined in detail, season, nutrients and/or herbivory were important factors influencing phenolic content. There were no predictable relationships for noninvasive species. There were no significant differences in growth, phenolic content, or herbivory among treatments in the field experiment suggesting that either the effects tested are unimportant for Typha spp., or the threshold was not met for an observable effect. We conclude that interspecific differences in the response of invasive plants to environmental factors preclude drawing general conclusions about the role of total phenol content in invasion success, but that invasive plants may be more responsive to environmental conditions, perhaps enhancing invasion."--Abstract.
Download or read book Heavy Metal Stress in Plants written by M.N.V. Prasad and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heavy metal phytotoxicity has been known for more than a century. However, research in the past years has confirmed the immense damage by metal pollution to plants, the soil and ultimately to humans. By reviewing both field and laboratory work, this book deals with the various functional and ecological aspects of heavy metal stress on plants and outlines the scope for future research and the possibilities for remediation.
Download or read book How Stormwater Runoff Alters Wetland Hydrology Impacts Native and Invasive Plants and Challenges Transboundary Planning and Management written by Rebecca C. Miller and published by . This book was released on 2001 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Handbook of Global Freshwater Invasive Species written by Robert A. Francis and published by Routledge. This book was released on 2012-03-12 with total page 918 pages. Available in PDF, EPUB and Kindle. Book excerpt: Invasive non-native species are a major threat to global biodiversity. Often introduced accidentally through international travel or trade, they invade and colonize new habitats, often with devastating consequences for the local flora and fauna. Their environmental impacts can range from damage to resource production (e.g. agriculture and forestry) and infrastructure (e.g. buildings, road and water supply), to human health. They consequently can have major economic impacts. It is a priority to prevent their introduction and spread, as well as to control them. Freshwater ecosystems are particularly at risk from invasions and are landscape corridors that facilitate the spread of invasives. This book reviews the current state of knowledge of the most notable global invasive freshwater species or groups, based on their severity of economic impact, geographic distribution outside of their native range, extent of research, and recognition of the ecological severity of the impact of the species by the IUCN. As well as some of the very well-known species, the book also covers some invasives that are emerging as serious threats. Examples covered include a range of aquatic and riparian plants, insects, molluscs, crustacea, fish, amphibians, reptiles and mammals, as well as some major pathogens of aquatic organisms. The book also includes overview chapters synthesizing the ecological impact of invasive species in fresh water and summarizing practical implications for the management of rivers and other freshwater habitats.
Download or read book Effects of Water Level Fluctuation and Nutrient Levels on Wetland Plant Biological Integrity written by Yuan Wei and published by . This book was released on 2010 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Minnesota Pollution Control Agency has developed plant and macro invertebrate indices of biological integrity (IBI) to assess wetland ecological health since 1995. From the same year, six wetlands in southern Minnesota have been monitored by water, plant and macro invertebrate samplings in summers. Plant IBI scores have been accessed for five years for each wetland so far. Water samples were collected for physical and chemical property analytes: water temperature, turbidity, pH, conductivity, chloride, Kjeldahl nitrogen, total phosphorus, and dissolved oxygen. Water sampling times have been increased to monthly since 2008; automatic loggers have also been deployed to record hourly water levels. Results from statistical analyses showed significant correlations among plant, water quality, and water level. It is concluded that water characteristics have significant effects on plant biological integrity and water level fluctuation has potential impacts on wetland plants by significantly correlating to water chemistry"--Abstract.
Download or read book Plant Environment Interaction written by Mohamed Mahgoub Azooz and published by John Wiley & Sons. This book was released on 2015-11-30 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: The increase in global population, urbanization and industrialization is resulting in the conversion of cultivated land into wasteland. Providing food from these limited resources to an ever-increasing population is one of the biggest challenges that present agriculturalists and plant scientists are facing. Environmental stresses make this situation even graver. Plants on which mankind is directly or indirectly dependent exhibit various mechanisms for their survival. Adaptability of the plants to changing environment is a matter of concern for plant biologists trying to reach the goal of food security. Despite the induction of several tolerance mechanisms, sensitive plants often fail to withstand these environmental extremes. Using new technological approaches has become essential and imperative. Plant-Environment Interaction: Responses and Approaches to Mitigate Stress throws light on the changing environment and the sustainability of plants under these conditions. It contains the most up-to-date research and comprehensive detailed discussions in plant physiology, climate change, agronomy and forestry, sometimes from a molecular point of view, to convey in-depth understanding of the effects of environmental stress in plants, their responses to the environment, how to mitigate the negative effects and improve yield under stress. This edited volume is written by expert plant biologists from around the world, providing invaluable knowledge to graduate and undergraduate students in plant biochemistry, food chemistry, plant physiology, molecular biology, plant biotechnology, and environmental sciences. This book updates scientists and researchers with the very latest information and sustainable methods used for stress tolerance, which will also be of considerable interest to plant based companies and institutions concerned with the campaign of food security.
Download or read book Invasive Species in Forests and Rangelands of the United States written by Therese M. Poland and published by Springer Nature. This book was released on 2021-02-01 with total page 455 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book describes the serious threat of invasive species to native ecosystems. Invasive species have caused and will continue to cause enormous ecological and economic damage with ever increasing world trade. This multi-disciplinary book, written by over 100 national experts, presents the latest research on a wide range of natural science and social science fields that explore the ecology, impacts, and practical tools for management of invasive species. It covers species of all taxonomic groups from insects and pathogens, to plants, vertebrates, and aquatic organisms that impact a diversity of habitats in forests, rangelands and grasslands of the United States. It is well-illustrated, provides summaries of the most important invasive species and issues impacting all regions of the country, and includes a comprehensive primary reference list for each topic. This scientific synthesis provides the cultural, economic, scientific and social context for addressing environmental challenges posed by invasive species and will be a valuable resource for scholars, policy makers, natural resource managers and practitioners.
Download or read book Grasses of the Soviet Union written by Nikolaĭ Nikolaevich T︠S︡velev and published by . This book was released on 1983 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:
