Download or read book The response of Norway spruce seedlings to simulated acid mist written by L J (Lucy) Sheppard and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Four pot experiments are reported in which Norway spruce (Picea abies (L.) Karst) seedlings, of different nutrient status, were treated with acid mist for one growing season in open-top chambers (OTCs). Combinations of H+, SO42-, NH4+ and NO3- were applied at different frequencies of application and supplying different doses of S and N kg ha-1. Plant growth, visible injury, frost hardiness and nutrient status were observed. These experiments were undertaken to improve our understanding of the interaction of environmental factors such as nutrition and mist-exposure frequency on seedling response to N and S deposition. Both acidity (less than or equal to pH 2.7) and SO42- ions were necessary to induce visible injury. Mist containing SO42-,2-, Hi and to a lesser extent NH4+ significantly reduced winter frost hardiness. Increasing the misting frequency, and to a lesser extent the overall dose, increased the likelihood of acid mist causing visible injury and reducing frost hardiness. Post-planting stress, low N status and needle juvenility increased the likelihood of acid mist causing visible injury. Increased plant vitality, adequate N status and growth rate reduced the likelihood of acid-mist-induced reductions in frost hardiness. Principles underlying the responses of spruce seedlings treated in controlled conditions to acid mist are discussed.
Download or read book Conifer Cold Hardiness written by F.J. Bigras and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 593 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conifer Cold Hardiness provides an up-to-date synthesis by leading scientists in the study of the major physiological and environmental factors regulating cold hardiness of conifer tree species. This state-of-the-art reference comprehensively explains current understanding of conifer cold hardiness ranging from the gene to the globe and from the highly applied to the very basic. Topics addressed encompass cold hardiness from the perspectives of ecology, ecophysiology, acclimation and deacclimation, seedling production and reforestation, the impacts of biotic and abiotic factors, and methods for studying and analyzing cold hardiness. The content is relevant to geneticists, ecologists, stress physiologists, environmental and global change scientists, pathologists, advanced nursery and silvicultural practitioners, and graduate students involved in plant biology, plant physiology, horticulture and forestry with an interest in cold hardiness.
Download or read book The effects of simulated acid mist on the frost hardiness of red spruce seedlings abstract written by L J (Lucy) Sheppard and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Responses of Forest Ecosystems to Environmental Changes written by A. Teller and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 1019 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book arises out of a symposium on forest and woodland terrestrial ecosystems which was held in Florence on 20-24th May 1991. It was organised jointly by the Commission of the European Communities (CEC) and the European Science Foundation (ESF) in association with the Italian Research Council (CNR). The symposium brQughUogether most -Of the internationally recognized groups working on forest ecosystems including biologists, botanists, ecologists, soil scientists, modellers, foresters and policy makers. All the CEC countries were represented. In addition, there was a broad audience from Eastern and Central Europe and from EFfA countries. Outstanding experts from outside Europe (US, Australia, Canada, Japan, China, etc.) were also present. In total, the symposium was attended by more than 500 participants. The structure of this book reflects the main elements of the meeting. As such it includes three main sections. The first consists of six major state-of-the-art reviews corresponding to the six plenary sessions, each followed by a discussion which has been summarized by rapporteurs. The reviews were prepared to assess critically the state of current knowledge in ecosystem research and to provide a scientific basis both for policy decisions and for further research.
Download or read book Environmental Pollution and Plant Responses written by Shashi Bhushan Agrawal and published by CRC Press. This book was released on 2023-01-30 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive and global in scope, Environmental Pollution and Plant Responses provides an analysis of the research on the factors contributing to the deteriorating environmental quality and its effect on plant performance. The issues include: environmental pollution and global climate change, response patterns of plants at different levels, mechanisms of interaction, tolerance strategies and future research prospects. The author evaluates trends and gives management strategies for abating the problem. This volume highlights the complexities of environmental problems and the affect of pollution on every level of the ecosystem.
Download or read book The impact of constituent ions of acid mist on assimilation and stomatal conductance of Norway spruce prior and post mid winter freezing written by Derek Eamus and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Norway spruce seedlings were sprayed twice weekly with one of a range of artificial mists at either pH 2.5, 3.0 or 5.6, for three months. The mists consisted of either (NH4)2SO4 (pH 5-6), NH4NO3 (pH 5-6), water (pH 5-6), HNO3 (Ph 2.5), HSO4 (pH 2-5 or pH 3.0), or NH4NO3 Plus (NH4)2SO4 (pH 2-5). In late December 1988 and early January 1989 the light response of assimilation and stomatal conductance were assessed in the laboratory following a 4-day equilibration period at 12-degrees-C The intact trees were then subjected to a mild (-10-degrees-C), brief (3 h) frost in the dark and the recovery of light saturated assimilation (A(max)) was followed during the subsequent light period The same trees were then subjected to a second 3 h (-18-degrees-C) frost. The recovery of A(max) during the next day was followed All ion-containing mists stimulated A(max) and apparent quantum yield relative to control trees, irrespective of pH. The mists containing SO4 made stomatal conductance unresponsive to light flux density and caused the stomata to lock open. Frosts of -10-degrees-C and -18-degrees-C did not inhibit the A(max) of control trees for longer than 200 min into the light period In contrast, the ion-containing mists exerted a significant inhibitory effect upon the recovery of A(max). Nitric acid inhibited A(max) to 35% of the pre-frost value, whilst the remaining treatments inhibited A(max) between 15% and 40% of the pre-frost value. It is concluded that SO4 causes increased mid-winter frost sensitivity and NO3 ameliorates this effect. The results are discussed in relation to forest decline.
Download or read book Methods in Comparative Plant Population Ecology written by David J. Gibson and published by Oxford University Press. This book was released on 2015 with total page 319 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second edition provides authoritative guidance on research methodology for plant population ecology. Practical advice is provided to assist senior undergraduates and post-graduate students, and all researchers, design their own field and greenhouse experiments and establish a research programme in plant population ecology.
Download or read book Effects of Ozone on Plants written by Kathie Beane and published by . This book was released on 1993 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology Abstracts written by and published by . This book was released on 1999 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coverage: 1982- current; updated: monthly. This database covers current ecology research across a wide range of disciplines, reflecting recent advances in light of growing evidence regarding global environmental change and destruction. Major ares of subject coverage include: Algae/lichens, Animals, Annelids, Aquatic ecosystems, Arachnids, Arid zones, Birds, Brackish water, Bryophytes/pteridophytes, Coastal ecosystems, Conifers, Conservation, Control, Crustaceans, Ecosyst em studies, Fungi, Grasses, Grasslands, High altitude environments, Human ecology, Insects, Legumes, Mammals, Management, Microorganisms, Molluscs, Nematodes, Paleo-ecology, Plants, Pollution studies, Reptiles, River basins, Soil, TAiga/tundra, Terrestrial ecosystems, Vertebrates, Wetlands, Woodlands.
Download or read book Acid Deposition written by James W.S. Longhurst and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject of acid deposition remains one of the most urgent of our contemporary environmental problems. Research programmes are continually redefming our understanding of cause and effect and hence the continuing need for a timely and authoritative series addressing these issues. This volume seeks to review and defme our contemporary understanding of acid deposition by reference to new international data and as a consequence assist the definition of our future research requirements and policy developments. International contributions to the volume are drawn from the Federal Republic of Germany, the U.S.A., Canada, Brazil, Switzerland, Austria, Israel, France and the United Kingdom. Some of these nations have experienced acid deposition on a regional scale for considerable periods of time; for others the phenomenon is an emerging problem. This collection of papers has been compiled by invitation to eminent members of the acid deposition research community and by selection from a carefully targeted call for papers. It is primarily designed to meet the needs of researchers, lecturers and postgraduate students in environmental disciplines and for environmental policy makers. It is of interest to professionals in related disciplines and essential as a reference text for libraries. The volume is divided into four broad themes: Emissions, chemistry and deposition; Ecosystem effects (freshwater, soils and forest systems); Effects on structural materials; Mitigation, control and management. Each of these sections provides an overview of contemporary understanding, presents new experimental or field evidence and provides guidance for our future research agenda.
Download or read book Terrestrial Effects Task Group V Peer Review written by and published by . This book was released on 1987 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Air Pollutants and the Leaf Cuticle written by Kevin E. Percy and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant leaves are covered by a thin, lipoidal, non-living membrane called the cuticle. Forming the interface between plants and the atmospheric environment, it presents an effective barrier to pollutant entry. The book provides a comprehensive review of air pollutant effects on the cuticle and covers the following thematic areas: - Cuticular physicochemical characteristics, physiological, regulatory, and protective roles. - Effects, mechanisms, and consequences of air pollutant interaction with leaf cuticles. - Non-anthropogenic and environmental influences on the cuticle and potential of the cuticle for biomonitoring and critical levels mapping. - New developments in experimental methodology and analytical techniques.
Download or read book Acid Precipitation written by and published by . This book was released on 1987 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rotational Grazing and Intensive Pasture Management written by Ann Townsend Young and published by . This book was released on 1993 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forests and Insects written by Allan D. Watt and published by Springer Science & Business Media. This book was released on 1997-09-30 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the full breadth of forest entomology. It combines the work of forest entomologists working on the impact and management of forest pests with those involved in diversity assessment and conservation of insects in forests. Forests and Insects demonstrates that both these disciplines demand an understanding of population and community biology. The book covers such topics as colonization of trees by insects, population dynamics of forest insects, insect natural enemies, the effects of climate change and pollution on forest pests, spatial variation in the abundance of insects,the mineralization of carbon by termites, the impact of herbivorous insects, and the conservation of forest insect diversity, including the effects of forest fragmentation and deforestation. This Royal Entomological Society Symposium volume will be of great interest to all agricultural and forest entomologists, population and community biologists, pest management specialists and anyone concerned with the conservation of forest biodiversity.
Download or read book Air Pollution and Plant Life written by J. N. B. Bell and published by John Wiley & Sons. This book was released on 2002-05-22 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Air Pollution and Plant Life" - Ein idealer Studienbegleiter zu Lehrveranstaltungen in den Bereichen Umwelt- und Pflanzenwissenschaft. Jetzt neu in der 2. Auflage. Dieser Band bietet einen umfassenden Überblick über die direkten und indirekten Auswirkungen der Luftverschmutzung auf die Pflanzenwelt und ihre Folgen für die allgemeine pflanzliche Produktivität. Untersucht werden verschiedene Schadstoffe, wie z.B. Oxidantien, Stickstoffoxide, Schwefeloxide, Fluoride und Feststoffteilchen, Schadstoffquellen sowie die Aufnahme und Speicherung einzelner Schadstoffe durch die Pflanzen. Darüber hinaus werden die aktuellen Richtlinien zur Luftqualität und deren Rolle in der Umweltpolitik umfassend erläutert. "Air Pollution and Plant Life" ist aber nicht nur ein wichtiges Lehrbuch für Studienanfänger und fortgeschrittene Studenten, sondern auch ein ideales Nachschlagewerk für Forscher in diesem Bereich.
