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Author: National Aeronautics and Space Administration (NASA) Publisher: Createspace Independent Publishing Platform ISBN: 9781721240166 Category : Languages : en Pages : 36
Book Description
The BOREAS TE-08 team collected in-lab spectral reflectance data for aspen bark and leaves from three sites within the BOREAS SSA from 24-May-1994 to 16-Jun-1994 (IFC 1), 19-Jul-1994 to 08-Aug-1994 (IFC 2), and 30-Aug-1994 to 19-Sep-1994 (IFC 3). One to nine trees from each site were sampled during the three IFCs. Each tree was sampled in five different locations for bark spectral properties: BS, US, BR, BT, and BO. Additionally, a limited number of LV were collected. Bark samples were removed from the stem of the tree and placed in ziplock bags for transport to UNH, where they were scanned with a spectroradiometer in a controlled environment. Each sample was scanned twice: the first set of measurements was made with the bark surface moistened, and the second set was made with the bark surface air-dried for a period of 30 minutes. These data represent continuous spectra of bark reflectance. Each sample was scanned three times, rotating the sample when possible. The reported values for each sample are an average over the three scans. The data are provided in tabular ASCII files. The data files are available on a CD-ROM (see document number 20010000884), or from the Oak Ridge National Laboratory (ORNL) Distributed Active Archive Center (DAAC). Hall, Forrest G. (Editor) and Papagno, Andrea (Editor) and Spencer, Shannon L. and Rock, Barrett N. Goddard Space Flight Center NASA/TM-2000-209891/VOL152, NAS 1.15:209891/VOL152, Rept-2000-03136-0/VOL152
Author: National Aeronautics and Space Administration (NASA) Publisher: Createspace Independent Publishing Platform ISBN: 9781721240166 Category : Languages : en Pages : 36
Book Description
The BOREAS TE-08 team collected in-lab spectral reflectance data for aspen bark and leaves from three sites within the BOREAS SSA from 24-May-1994 to 16-Jun-1994 (IFC 1), 19-Jul-1994 to 08-Aug-1994 (IFC 2), and 30-Aug-1994 to 19-Sep-1994 (IFC 3). One to nine trees from each site were sampled during the three IFCs. Each tree was sampled in five different locations for bark spectral properties: BS, US, BR, BT, and BO. Additionally, a limited number of LV were collected. Bark samples were removed from the stem of the tree and placed in ziplock bags for transport to UNH, where they were scanned with a spectroradiometer in a controlled environment. Each sample was scanned twice: the first set of measurements was made with the bark surface moistened, and the second set was made with the bark surface air-dried for a period of 30 minutes. These data represent continuous spectra of bark reflectance. Each sample was scanned three times, rotating the sample when possible. The reported values for each sample are an average over the three scans. The data are provided in tabular ASCII files. The data files are available on a CD-ROM (see document number 20010000884), or from the Oak Ridge National Laboratory (ORNL) Distributed Active Archive Center (DAAC). Hall, Forrest G. (Editor) and Papagno, Andrea (Editor) and Spencer, Shannon L. and Rock, Barrett N. Goddard Space Flight Center NASA/TM-2000-209891/VOL152, NAS 1.15:209891/VOL152, Rept-2000-03136-0/VOL152
Author: Ranga B. Myneni Publisher: Springer Science & Business Media ISBN: 3642753892 Category : Science Languages : en Pages : 571
Book Description
Photon-Vegetation Interactions deals with the interaction of electromagnetic radiation with vegetation canopies. The approach to the various aspects is mainly theoretical and consequently the subject is being treated as a special branch of mathematical physics. A major emphasis is on the development of theoretical methods for determining the reflection function of vegetation canopies in optical remote sensing. Furthermore, the coupling of the radiative transfer theory with leaf photosynthesis to evaluate the productivity of vegetation canopies is treated as well as the theory of photon transport in phototropic and other biological media.
Author: James H. Speer Publisher: University of Arizona Press ISBN: 0816526850 Category : Science Languages : en Pages : 360
Book Description
This comprehensive text addresses all of the subjects that a reader who is new to the field will need to know and will be a welcome reference for practitioners at all levels. It includes a history of the discipline, biological and ecological background, principles of the field, basic scientific information on the structure and growth of trees, the complete range of dendrochronology methods, and a full description of each of the relevant subdisciplines.
Author: Tim Caro Publisher: Island Press ISBN: 159726959X Category : Nature Languages : en Pages : 394
Book Description
The vast scope of conservation problems has forced biologists and managers to rely on "surrogate" species to serve as shortcuts to guide their decision making. These species-known by a host of different terms, including indicator, umbrella, and flagship species-act as proxies to represent larger conservation issues, such as the location of biodiversity hotspots or general ecosystem health. Synthesizing an immense body of literature, conservation biologist and field researcher Tim Caro offers systematic definitions of surrogate species concepts, explores biological theories that underlie them, considers how surrogate species are chosen, critically examines evidence for and against their utility, and makes recommendations for their continued use. The book clarifies terminology and contrasts how different terms are used in the real world considers the ecological, taxonomic, and political underpinnings of these shortcuts identifies criteria that make for good surrogate species outlines the circumstances where the application of the surrogate species concept shows promise Conservation by Proxy is a benchmark reference that provides clear definitions and common understanding of the evidence and theory behind surrogate species. It is the first book to review and bring together literature on more than fifteen types of surrogate species, enabling us to assess their role in conservation and offering guidelines on how they can be used most effectively.
Author: Sigmar Bortenschlager Publisher: Springer Science & Business Media ISBN: 3709167582 Category : Social Science Languages : en Pages : 196
Book Description
Before the discovery of the "Man in the Ice" in temporal context. On the other hand the reconstruc tion of the Iceman's life-style as derived from data September 1991, little was known about the Neolithic obtained from the site has to be correlated with inde period in the Central Alps. Suddenly and without precedent, here was the very well preserved corpse of pendent data sets. For that purpose pollen analysis was a man who had lived more than 5,000 years ago with his performed on peat-bogs in the vicinity of the find and clothing and equipment almost intact. The discovery further afield to obtain precise data on the vegetation was not just deservedly a world-wide sensation but a cover and climate in the Neolithic. Pollen analysis was unique opportunity for the scientific community to in performed for a vertical transect extending from the vestigate the life and death of a human from such very timber line almost up to the nival zone. The results of ancient times. It opened up wholly new horizons in the analyses reveal changes to the vegetation patterns prehistoric research, and with the help of a full range caused by pastoral farming long before the time of the of modern research techniques an attempt was made Iceman.
Author: Jordi Catalan Publisher: Springer ISBN: 3319559826 Category : Nature Languages : en Pages : 413
Book Description
This book provides case studies and general views of the main processes involved in the ecosystem shifts occurring in the high mountains and analyses the implications for nature conservation. Case studies from the Pyrenees are preponderant, with a comprehensive set of mountain ranges surrounded by highly populated lowland areas also being considered. The introductory and closing chapters will summarise the main challenges that nature conservation may face in mountain areas under the environmental shifting conditions. Further chapters put forward approaches from environmental geography, functional ecology, biogeography, and paleoenvironmental reconstructions. Organisms from microbes to large carnivores, and ecosystems from lakes to forest will be considered. This interdisciplinary book will appeal to researchers in mountain ecosystems, students and nature professionals. This book is open access under a CC BY license.
Author: National Aeronautics and Space Administration (NASA)
Author: National Aeronautics and Space Administration (NASA)
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Author: 
Author: John Monteith
Author: Ranga B. Myneni
Author: James H. Speer
Author: Tim Caro
Author: Sigmar Bortenschlager
Author: Lula E. Greene
Author: Jordi Catalan