The Propagule Doesn?t Fall Far from the Tree, Especially After Short-interval, High-severity Fire PDF Download
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Author: Nathan S. Gill
Publisher:
ISBN:
Category : Forest ecology
Languages : en
Pages : 13
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Book Description
Subalpine forests that historically burned every 100?300 yr are expected to burn more frequently as climate warms, perhaps before trees reach reproductive maturity or produce a serotinous seedbank. Tree regeneration after short-interval (30-yr) high-severity fire will increasingly rely on seed dispersal from unburned trees, but how dispersal varies with age and structure of surrounding forest is poorly understood. We studied wind dispersal of three conifers (Picea engelmannii, Abies lasiocarpa, and Pinus contorta var. latifolia, which can be serotinous and nonserotinous) after a stand-replacing fire that burned young (?30 yr) and older (100 yr) P. contorta forest in Grand Teton National Park (Wyoming, USA). We asked how propagule pressure varied with time since last fire, how seed delivery into burned forest varied with age and structure of live forest edges, what variables explained seed delivery into burned forest, and how spatial patterns of delivery across the burned area could vary with alternate patterns of surrounding live forest age. Seeds were collected in traps along 100-m transects (n = 18) extending from live forest edges of varying age (18, 30, and >100 yr) into areas of recent (2-yr) high-severity fire, and along transects in live forests to measure propagule pressure. Propagule pressure was low in 18-yr-old stands (~8 seeds/m2) and similarly greater in 30- and 100-yr-old stands (~32 seeds/m2). Mean dispersal distance was lowest from 18-yr-old edges and greatest from >100-yr-old edges. Seed delivery into burned forest declined with increasing distance and increased with height of trees at live forest edges, and was consistently higher for P. contorta than for other conifers. Empirical dispersal kernels revealed that seed delivery from 18-yr-old edges was very low (?2.4 seeds/m2) and concentrated within 10 m of the live edge, whereas seed delivery from >100-yr-old edges was >4.9 seeds/m2 out to 80 m. When extrapolated throughout the burned landscape, estimated seed delivery was low (49,400 seeds/ha) in 70% of areas that burned in short-interval fire (
Author: Nathan S. Gill
Publisher:
ISBN:
Category : Forest ecology
Languages : en
Pages : 13
Get Book Here
Book Description
Subalpine forests that historically burned every 100?300 yr are expected to burn more frequently as climate warms, perhaps before trees reach reproductive maturity or produce a serotinous seedbank. Tree regeneration after short-interval (30-yr) high-severity fire will increasingly rely on seed dispersal from unburned trees, but how dispersal varies with age and structure of surrounding forest is poorly understood. We studied wind dispersal of three conifers (Picea engelmannii, Abies lasiocarpa, and Pinus contorta var. latifolia, which can be serotinous and nonserotinous) after a stand-replacing fire that burned young (?30 yr) and older (100 yr) P. contorta forest in Grand Teton National Park (Wyoming, USA). We asked how propagule pressure varied with time since last fire, how seed delivery into burned forest varied with age and structure of live forest edges, what variables explained seed delivery into burned forest, and how spatial patterns of delivery across the burned area could vary with alternate patterns of surrounding live forest age. Seeds were collected in traps along 100-m transects (n = 18) extending from live forest edges of varying age (18, 30, and >100 yr) into areas of recent (2-yr) high-severity fire, and along transects in live forests to measure propagule pressure. Propagule pressure was low in 18-yr-old stands (~8 seeds/m2) and similarly greater in 30- and 100-yr-old stands (~32 seeds/m2). Mean dispersal distance was lowest from 18-yr-old edges and greatest from >100-yr-old edges. Seed delivery into burned forest declined with increasing distance and increased with height of trees at live forest edges, and was consistently higher for P. contorta than for other conifers. Empirical dispersal kernels revealed that seed delivery from 18-yr-old edges was very low (?2.4 seeds/m2) and concentrated within 10 m of the live edge, whereas seed delivery from >100-yr-old edges was >4.9 seeds/m2 out to 80 m. When extrapolated throughout the burned landscape, estimated seed delivery was low (49,400 seeds/ha) in 70% of areas that burned in short-interval fire (
Author: Carol C. Baskin
Publisher: Academic Press
ISBN: 0128237325
Category : Science
Languages : en
Pages : 348
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Book Description
Plant Regeneration from Seeds: A Global Warming Perspective comprehensively reviews the effects caused by climate change on global plant regeneration, growth and seed germination. Initial chapters discuss specific geographical regions such as steppes, the artic, boreal and alpine zones, dry and tropical forests and deserts. Subsequent chapters explore special seed-related topics like fire, soil seed banks, crops, weed emergence, and invasive species Written by leaders in the field of seed germination and plant growth, this is an essential read for researchers and academics interested in plant growth, plant regeneration, seed germination and the effects of these in relation to climate change. Guides readers through the global effects of climate change on plant growth and seed germination, including chapters on special seed-related topics Provides fundamental research on plant regeneration Includes detailed coverage on specific geographic regions
Author:
Publisher:
ISBN:
Category : Biotic communities
Languages : en
Pages : 282
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Book Description
Author: Julian Evans
Publisher: Academic Press
ISBN: 0080548016
Category : Nature
Languages : en
Pages : 5752
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Book Description
A combination of broad disciplinary coverage and scientific excellence, the Encyclopedia of Forest Sciences will be an indispensable addition to the library of anyone interested in forests, forestry and forest sciences. Packed with valuable insights from experts all over the world, this remarkable set not only summarizes recent advances in forest science techniques, but also thoroughly covers the basic information vital to comprehensive understanding of the important elements of forestry. The Encyclopedia of Forest Sciences also covers relevant biology and ecology, different types of forestry (e.g. tropical forestry and dryland forestry), scientific names of trees and shrubs, and the applied, economic, and social aspects of forest management. Valuable key features further enhance the utility of this Encyclopedia as an exceptional reference tool. Also available online via ScienceDirect – featuring extensive browsing, searching, and internal cross-referencing between articles in the work, plus dynamic linking to journal articles and abstract databases, making navigation flexible and easy. For more information, pricing options and availability visit www.info.sciencedirect.com. Edited and written by a distinguished group of editors and contributors Well-organized encyclopedic format provides concise, readable entries, easy searches, and thorough cross-references Illustrative tables, figures, and photographs in every entry, produced in full color Comprehensive glossary defines new and important terms Complete, up-to-date coverage of over 60 areas of forest sciences - sure to be of interest to scientists, students, and professionals alike! Editor-in-Chief is the past president of the International Union of Forestry Research Organizations, the oldest international collaborative forestry research organization with over 15,000 scientists from 100 countries
Author: Robert E. Keane
Publisher: Springer
ISBN: 3319090151
Category : Science
Languages : en
Pages : 195
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Book Description
A new era in wildland fuel sciences is now evolving in such a way that fire scientists and managers need a comprehensive understanding of fuels ecology and science to fully understand fire effects and behavior on diverse ecosystem and landscape characteristics. This is a reference book on wildland fuel science; a book that describes fuels and their application in land management. There has never been a comprehensive book on wildland fuels; most wildland fuel information was put into wildland fire science and management books as separate chapters and sections. This book is the first to highlight wildland fuels and treat them as a natural resource rather than a fire behavior input. Moreover, there has never been a comprehensive description of fuels and their ecology, measurement, and description under one reference; most wildland fuel information is scattered across diverse and unrelated venues from combustion science to fire ecology to carbon dynamics. The literature and data for wildland fuel science has never been synthesized into one reference; most studies were done for diverse and unique objectives. This book is the first to link the disparate fields of ecology, wildland fire, and carbon to describe fuel science. This just deals with the science and ecology of wildland fuels, not fuels management. However, since expensive fuel treatments are being planned in fire dominated landscapes across the world to minimize fire damage to people, property and ecosystems, it is incredibly important that people understand wildland fuels to develop more effective fuel management activities.
Author: H. A. Mooney
Publisher: Springer Science & Business Media
ISBN: 3642691374
Category : Science
Languages : en
Pages : 307
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Book Description
The earth's landscapes are being increasingly impacted by the activities of man. Unfortunately, we do not have a full understanding of the consequences of these disturbances on the earth's productive capacity. This problem was addressed by a group of French and U.S. ecologists who are specialists at levels of integration extending from genetics to the biosphere at a meeting at Stanford, California, sponsored by the National Science Foundation and the Centre National de la Recherche Scientifique. With a few important exceptions it was found at this meeting that most man-induced disturbances of ecosystems can be viewed as large scale patterns of disturbances that have occurred, generally on a small scale, in ecosystems through evolutionary time. Man has induced dramatic large-scale changes in the environment which must be viewed at the biosphere level. Acid deposition and CO increase are two 2 examples of the consequences of man's increased utilization of fossil fuels. It is a matter of considerable concern that we cannot yet fully predict the ecological consequences of these environmental changes. Such problems must be addressed at the international level, yet substantive mechanisms to do this are not available.
Author: Johann Georg Goldammer
Publisher: African Minds
ISBN: 191983365X
Category : Fire ecology
Languages : en
Pages : 446
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Book Description
Africa is a fire continent. Since the early evolution of humanity, fire has been harnessed as a land-use tool. Many ecosystems of Sub-Sahara Africa that have been shaped by fire over millennia provide a high carrying capacity for human populations.
Author: Matteo Garbelotto
Publisher: MDPI
ISBN: 3038426717
Category : Science
Languages : en
Pages : 243
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Book Description
This book is a printed edition of the Special Issue "Forest Pathology and Plant Health" that was published in Forests
Author: F. Halle
Publisher: Springer Science & Business Media
ISBN: 3642811906
Category : Science
Languages : en
Pages : 457
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Book Description
Author: Stephen D. Elliott
Publisher: Royal Botanic Gardens Kew
ISBN: 9781842464427
Category : Deforestation
Languages : en
Pages : 0
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Book Description
Restoring Tropical Forests is a user-friendly guide to restoring forests throughout the tropics. Based on the concepts, knowledge and innovative techniques developed at Chiang Mai University's Forest Restoration Research Unit, this book will enable improvements in existing forest restoration projects and provide a key resource for new ones. The book presents three aspects of the restoration of tropical forest ecosystems: the concepts of tropical forest dynamics and regeneration that are relevant to tropical forest restoration, proven restoration techniques and case studies of their successful application, and research methods to refine such techniques and adapt them to local ecological and socio-economic conditions.
