Download or read book The Relationship Between Trembling Aspen Phenology and Larval Development of the Large Aspen Tortrix written by Dylan Parry and published by Canadian Forest Service, Northern Forestry Centre. This book was released on 1997 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The large aspen tortrix (Choristoneura conflictana) is an occasional defoliator of trembling aspen (Populus tremuloides) in western Canada. Research suggests that there might be a narrow phenological window for successful tortrix colonization of aspen buds in the spring. This paper adapts a stochastic model to describe the temporal relationship between C. conflictana and trembling aspen phenologies. The first characterization of the phenological stages occurring during bud-break and leaf expansion of trembling aspen is provided, as determined from observations at two sites in 1994. Degree-day models based on a common threshold temperature are developed for both insect and bud and shoot development of its host. The influence of changes in the sequence of temporal events on the success or failure of tortrix populations is also discussed.

Download or read book Phenology An Integrative Environmental Science written by Mark D. Schwartz and published by Springer Science & Business Media. This book was released on 2011-04-28 with total page 567 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phenology is the study of plant and animal life cycle events, which are triggered by environmental changes, especially temperature. Wide ranges of phenomena are included, from first openings of leaf and flower buds, to insect hatchings and return of birds. Each one gives a ready measure of the environment as viewed by the associated organism. Thus, phenological events are ideal indicators of the impact of local and global changes in weather and climate on the earth's biosphere. Assessing our changing world is a complex task that requires close cooperation from experts in biology, climatology, ecology, geography, oceanography, remote sensing and other areas. This book is a synthesis of current phenological knowledge, designed as a primer on the field for global change and general scientists, students and interested members of the public. With contributions from a diverse group of over fifty phenological experts, covering data collection, current research, methods and applications, it demonstrates the accomplishments and potential of phenology as an integrative environmental science.

Download or read book Poplars and Willows written by Jud G. Isebrands and published by CABI. This book was released on 2014-02-12 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt: Poplars and willows form an important component of forestry and agricultural systems, providing a wide range of wood and non-wood products. This book synthesizes research on poplars and willows, providing a practical worldwide overview and guide to their basic characteristics, cultivation and use, issues, problems and trends. Prominence is given to environmental benefits and the importance of poplar and willow cultivation in meeting the needs of people and communities, sustainable livelihoods, land use and development.

Download or read book Large Aspen Tortrix written by H. F. Cerezke and published by . This book was released on 1992 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Information Report written by and published by . This book was released on 1985 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Abr g Des Publications written by Canadian Forest Service and published by . This book was released on 1997 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Role of Boreal Forests and Forestry in the Global Carbon Budget written by International Boreal Forest Research Association. Conference and published by . This book was released on 2002 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Ecology and Parasite Complex of the Large Aspen Tortrix Choristoneura Conflictana Walker Lepidoptera Tortricidae in the Upper Peninsula of Michigan written by Ross Fishbough and published by . This book was released on 1977 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Benefits and Costs of Phytochemical Defense in Aspen insect Interactions written by Jack R. Donaldson and published by . This book was released on 2005 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book La Selva written by Lucinda A. McDade and published by University of Chicago Press. This book was released on 1994-03-18 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abiotic environment and ecosystem processes; The plant community: Composition, dynamics, and life-history processes; The animal community; Plant-animal interactions; La selva's human environment.

Download or read book Entomology Abstracts written by and published by . This book was released on 1988 with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Temperate Deciduous Forests written by Ernst Röhrig and published by Elsevier Science & Technology. This book was released on 1991 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume treats a plant formation which is distributed in America, Asia and Europe. There is a general introduction which differentiates the temperate deciduous forests from adjacent plant formations, characterize the climatic factors under which these deciduous ecosystems have developed, and consider the flora of such systems in relation to post-Pleistocene history. A characteristic feature of temperate deciduous forests is the shedding of leaves prior to the cold season of the year so that these forests are seasonally distinctive. Because of different ecological conditions, very different stand structures are found within deciduous forests, and these change during the course of succession. These features have a significant influence on animal populations, which are presented in detail. A major portion of the book is devoted to the description of the regional deciduous forests, beginning with the flora and fauna of North America, for which a large volume of research results and literature exists. In the following chapters flora radiating out of North America, Mexico and Central America is treated, and the flora and fauna of Europe. In the last chapters the unusual occurrence of temperate deciduous forest in the Southern Hemisphere (South America) is discussed.

Download or read book INSECTS AND DISEASES OF ALASKAN FORESTS written by EDWARD H. HOLSTEN and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biodiversity written by Takuya Abe and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite acknowledgment that loss of living diversity is an international biological crisis, the ecological causes and consequences of extinction have not yet been widely addressed. In honor of Edward O. Wilson, winner of the 1993 International Prize for Biology, an international group of distinguished biologists bring ecological, evolutionary, and management perspectives to the issue of biodiversity. The roles of ecosystem processes, community structure and population dynamics are considered in this book. The goal, as Wilson writes in his introduction, is "to assemble concepts that unite the disciplines of systematics and ecology, and in so doing to create a sound scientific basis for the future management of biodiversity."

Download or read book The Autecology of Major Tree Species in the North Central Region of Ontario written by Canada-Ontario Forest Resource Development Agreement and published by [Sault Ste Marie? Ont.] : Canada-Ontario Forest Resource Development Agreement. This book was released on 1990 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book written by and published by . This book was released on 1983 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanisms of Woody Plant Defenses Against Insects written by William J Mattson and published by . This book was released on 1987-12-01 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: