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Record Search Query:

Global Wildlife Disease News Map
Entry ID: NBII_WILDLIFEDISEASE

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Summary

Abstract: This data set provide local LAI maps for the Larose (Ontario) site in Canada. These derived maps may also be useful for validating other LAI maps over this same site given that the area is protected from disturbance. The maps should be used for the given period of validity. The LAI data are suitable for use in modeling the carbon, water, energy, energy and trace gas exchange between the land ... surface and the atmosphere at regional scales. The dataset may also be useful for monitoring changes in the land surface. A complete description of producing the maps for the Larose site and the ground measurement campaign is provide in the companion document (Larose2003FTReport.pdf (link)).The Leaf Area Index (LAI) maps are at 30-m resolution for the 3x3-km Larose site. LAI is defined here as half the total (all-sided) live foliage area per unit horizontal projected ground surface area. Overstory LAI corresponds to all tree foliage except for treeless areas where it corresponds to total foliage. The algorithms were developed from ground measurements and Landsat TM and ETM+ images (Fernandes et. al., 2003). A mask was developed using the Landsat ETM+/TM5 image and available land cover maps to identify only those areas with land cover belonging to the sample land cover classes and with Landsat ETM+/TM5 spectral reflectance values that fell within the convex hull of the spectral reflectance values over the plots. LAI was mapped within the masked region using the Landsat ETM+/TM5 image and the developed transfer function. The final LAI map was scaled by a factor of 20 (offset 0). The LAI maps are in Tagged Image File Format (TIFF).The VALERI project (Validation of Land European Remote sensing Instruments) is dedicated to the validation of the products derived from medium resolution satellite sensors ( http://www.avignon.inra.fr/valeri/ ). The objectives of the VALERI project are: (1) to evaluate the absolute accuracy of the biophysical products (LAI, fAPAR, fCover) derived from large swath sensors (e.g., AVHRR, POLDER, VEGETATION, SEAWIFS, MSG, MERIS, AATSR, MODIS, MISR, GLI) using a range of possible algorithms; and (2) to inter-compare the products derived from different sensors and algorithms. For this purpose, the VALERI project has developed a network of sites distributed over the Earth's surface and a methodology designed to directly measure the biophysical variables of interest at proper spatial and temporal scales.

Description: Access the Global Wildlife Disease News Map.

Service Citation

Originators: University of Wisconsin-Madison, National Biological Information Infrastructure
Title: Global Wildlife Disease News Map
Release_Date: 2008
Provider: National Biological Information Infrastructure
Edition: 2.0
URL: http://www.wdin.org/newsmap/

Service Keywords

EDUCATION/OUTREACH >INTERACTIVE PROGRAMS >WEB-BASED

ENVIRONMENTAL ADVISORIES >HEALTH ADVISORIES >ANIMAL HEALTH ADVISORIES

DATA ANALYSIS AND VISUALIZATION >GEOGRAPHIC INFORMATION SYSTEMS >WEB-BASED GEOGRAPHIC INFORMATION SYSTEMS

Science Keywords

AGRICULTURE >ANIMAL SCIENCE >ANIMAL DISEASES/DISORDERS/PESTS

HUMAN DIMENSIONS >PUBLIC HEALTH >DISEASES/EPIDEMICS

ISO Topic Category

FARMING
ECONOMY
HEALTH

Quality Disclaimers

1. The opinions discussed in news articles posted to the Global Wildlife Disease News Map do not reflect positions held by the Wildlife Disease Information Node.

2. WDIN cannot guarantee that links to older news items will work as most news providers only offer access to their articles for a limited time.

Access Constraints None

Use Constraints None

Ancillary Keywords

GIS
Geographic Information Systems

Service Provider

WDIN > Wildlife Data Integration Network

Service Organization URL: http://www.wdin.org

Service Provider Personnel
Name: MEGAN HINES Email: mkhines at wisc.edu

Distribution Media

Distribution_Media: Online
Fees: No fees

Personnel

TYLER B. STEVENS
Role: SERF AUTHOR
Phone: (301) 614-6898
Fax: 301-614-5268
Email: Tyler.B.Stevens at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Global Change Master Directory
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA

Creation and Review Dates

SERF Creation Date: 2008-05-05
SERF Last Revision Date: 2013-06-03

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