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 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 Avocado written by Bruce A. Schaffer and published by CABI. This book was released on 2013 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is comprised of 15 chapters covering principles and basic understanding in avocado science, technology, best management practices and postharvest aspects. It is aimed at avocado researchers, libraries, teachers and academics, students, advisers, cutting edge growers and industry support personnel. Topics discussed include the history, distribution, uses, taxonomy, botany, genetics, breeding, ecology, reproductive biology, ecophysiology, cultivars and rootstocks, propagation, biotechnology, irrigation and mineral nutrition, crop management, foliar, fruit and soil-borne diseases, insect and mite pests and harvesting, packing, postharvest technology, transport and processing.
Download or read book Report of the Institute of Terrestrial Ecology written by and published by . This book was released on 1989 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quick Bibliography Series written by National Agricultural Library (U.S.). Reference Division and published by . This book was released on 1995 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1993 with total page 1688 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography on Cold Regions Science and Technology written by and published by . This book was released on 1993 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Agricultural Index written by and published by . This book was released on 1992 with total page 2652 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Photosynthetic and stomatal conductance responses of Norway spruce and beech to ozone acid mist and frost a conceptual model written by Derek Eamus and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biology and Ecology of Norway Spruce written by Mark G. Tjoelker and published by Springer Science & Business Media. This book was released on 2007-05-29 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a concise and comprehensive review of the biology, ecology, and management of Norway spruce. Written by 25 experts in the field, and richly illustrated, it integrates classic and contemporary literature. More than 2000 works are cited in the text, which highlights basic research and forestry practices in central and Eastern Europe. The huge range of topics covered includes the species’ morphology, its physiology and nutrition, and its ecology.
Download or read book Science Citation Index written by and published by . This book was released on 1993 with total page 2560 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1964- have guides and journal lists.
Download or read book Mineral Nutrition of Higher Plants written by Horst Marschner and published by Gulf Professional Publishing. This book was released on 1995 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text presents the principles of mineral nutrition in the light of current advances. For this second edition more emphasis has been placed on root water relations and functions of micronutrients as well as external and internal factors on root growth and the root-soil interface.
Download or read book Quantitative Laws in Biological Chemistry written by Svante Arrhenius and published by . This book was released on 1915 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Root Ecology written by Hans de Kroon and published by Springer Science & Business Media. This book was released on 2003-05-21 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the course of evolution, a great variety of root systems have learned to overcome the many physical, biochemical and biological problems brought about by soil. This development has made them a fascinating object of scientific study. This volume gives an overview of how roots have adapted to the soil environment and which roles they play in the soil ecosystem. The text describes the form and function of roots, their temporal and spatial distribution, and their turnover rate in various ecosystems. Subsequently, a physiological background is provided for basic functions, such as carbon acquisition, water and solute movement, and for their responses to three major abiotic stresses, i.e. hard soil structure, drought and flooding. The volume concludes with the interactions of roots with other organisms of the complex soil ecosystem, including symbiosis, competition, and the function of roots as a food source.
Download or read book The Carbon Cycle written by T. M. L. Wigley and published by Cambridge University Press. This book was released on 2005-08-22 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reducing carbon dioxide (CO2) emissions is imperative to stabilizing our future climate. Our ability to reduce these emissions combined with an understanding of how much fossil-fuel-derived CO2 the oceans and plants can absorb is central to mitigating climate change. In The Carbon Cycle, leading scientists examine how atmospheric carbon dioxide concentrations have changed in the past and how this may affect the concentrations in the future. They look at the carbon budget and the "missing sink" for carbon dioxide. They offer approaches to modeling the carbon cycle, providing mathematical tools for predicting future levels of carbon dioxide. This comprehensive text incorporates findings from the recent IPCC reports. New insights, and a convergence of ideas and views across several disciplines make this book an important contribution to the global change literature.
Download or read book Trees in a Changing Environment written by Michael Tausz and published by Springer. This book was released on 2014-08-26 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book delivers current state-of-the-science knowledge of tree ecophysiology, with particular emphasis on adaptation to a novel future physical and chemical environment. Unlike the focus of most books on the topic, this considers air chemistry changes (O3, NOx, and N deposition) in addition to elevated CO2 effects and its secondary effects of elevated temperature. The authors have addressed two systems essential for plant life: water handling capacity from the perspective of water transport; the coupling of xylem and phloem water potential and flow; water and nutrition uptake via likely changes in mycorrhizal relationships; control of water loss via stomata and its retention via cellular regulation; and within plant carbon dynamics from the perspective of environmental limitations to growth, allocation to defences, and changes in partitioning to respiration. The authors offer expert knowledge and insight to develop likely outcomes within the context of many unknowns. We offer this comprehensive analysis of tree responses and their capacity to respond to environmental changes to provide a better insight in understanding likelihood for survival, as well as planning for the future with long-lived, stationary organisms adapted to the past: trees.
