[ECOLOG-L] formula to map Whittaker biomes
Dear list, I am in search of a means to map the classic Whittaker biomes (and perhaps Holdridge Life Zones). Specifically, I have global data for temperature and precipitation and I want to calculate what the Whittaker formula says should be the biome for each pixel. Does such a formula exist? Thanks for any help, Clinton
[ECOLOG-L] global forum for conservation science
Announcing the launch of the CONSERVATION-SCIENCE global forum, devoted to conservation science and practice. This email list was established to fill a perceived gap in communication between the conservation scientists around the world. Thousands of people work diligently on conservation challenges every day and many of these challenges are quite similar. The hope is that Conservation-Science provides a forum whereby we can avoid reinventing conservation wheels, perhaps by simply asking, “Has anyone looked at this before?” Topics include discussions of conservation science, job and funding opportunities, and conservation news. I ask that you consider joining the discussions, and send this invite to others that may be interested. To subscribe, simply go to the site below and complete the form. https://listserv.umd.edu/cgi-bin/wa?SUBED1=conservation-science&A=1 The great success of Ecolog-L itself was the inspiration for creating an equivalent for the conservation community. A huge thanks to Dr. David Inouye, founder of Ecolog-L, for helping me set up Conservation-Science. Thanks also to the University of Maryland for their generous support in hosting the list. Sincerely, Clinton Jenkins Department of Biology University of Maryland College Park, MD 20742 http://www.terpconnect.umd.edu/~cnjenkin/
[ECOLOG-L] glaciation summary
I did not find the specific kind of data that I needed, but there were some interesting and useful suggestions. Below is a summary of the responses to my Ecolog post. It might not be exactly what you're looking for, but I heartily suggest investigating the very well done paleogeographical materials that Prof. Ron Blakely (Univ. AZ) has put together; which includes plug-ins for NASA World Wind http://jan.ucc.nau.edu/~rcb7/ http://jan.ucc.nau.edu/~rcb7/regionaltext.html http://jan.ucc.nau.edu/~rcb7/nam.html http://worldwindcentral.com/wiki/Add-on:Paleomaps http://forum.worldwindcentral.com/showthread.php?t=6495 "The globes presented in this series show how Earth may have appeared over the last 600 million years (Ma). The global views were prepared from rectangular projections drawn at a resolution of 3000x1500 pixels for each of the 26 time slices (small files of the rectangular maps are also included). Topography was "cloned" from digital elevation maps of modern Earth from the USGS. Colors were adjusted to portray climate and vegetation for the given time and location. The modern Earth was also drawn in this manner using a color pallet derived from satellite images created by ARC Science of Loveland, Colorado." Includes Precambrian to the present Also see: http://www.google.com/Top/Science/Earth_Sciences/Paleogeography_and_Paleoclimatology/ visually stunning and very informative. John Mickelson Geospatial and Ecological Services 501 Stage Rd. Monroe, NY 10950-3217 (845) 893-4110 john.mickel...@yahoo.com Not sure if this fits your requirements, but GIS maps and tools are available through Scotese Paleomap project http://www.scotese.com/lastice.htm AJ May I immodestly suggest my own Web site? It's an Atlas of the world for various stages by the LGM, with an accompanying literature review: http://www.esd.ornl.gov/projects/qen/nerc.html It's a little out of date (I stopped updating it a few years ago) but not much has substantially changed in the past several years in terms of our view of what the late Quaternary looked like. Jonathan Adams
[ECOLOG-L] looking for global map of time since last glaciation
Does anyone know where I might find a global map, preferably in GIS format, showing the length of time since last glaciation? Ideally this would be a continuous measure of time, illustrating the retreat of the last glaciation, but a coarsely categorized map would be useful also. Thanks. Clinton
[ECOLOG-L] another search for maps of Sierra Nevada Ancient forests
Anyone know of a GIS version of the old growth forest maps in the publication below? I would much appreciate a link or contact for further information on this one too. Sierra Nevada Ecosystem Project final report to Congress : status of the Sierra Nevada. Wildland Resources Center Report #40, University of California, Davis, 1996/97. -- Clinton Jenkins Nicholas School of the Environment Duke University Box 90328 LSRC A201 Durham NC 27708 USA Phone: 919 613 8143 Email: Clinton.Jenkins (at) duke.edu http://www.nicholas.duke.edu/people/faculty/pimm/clintonjenkins.html
[ECOLOG-L] search for maps of eastside Cascade Ancient forests
Is anyone aware of a digitized version of the old growth forest maps in the publication below? I would much appreciate a link or contact for further information. Henjum, M. G., J. R. Karr, D. L. Bottom, D. A. Perry, J. C. Bednarz, S. G. Wright, S. A. Beckwitt, and E. A. Beckwitt. 1994. Interim protection for late-successional forests, fisheries, and watersheds: National forests east of the Cascades crest, Oregon and Washington. The Wildlife Society Technical Review 94-2, Bethseda, Maryland, USA. -- Clinton Jenkins Nicholas School of the Environment Duke University Box 90328 LSRC A201 Durham NC 27708 USA Phone: 919 613 8143 Email: Clinton.Jenkins (at) duke.edu http://www.nicholas.duke.edu/people/faculty/pimm/clintonjenkins.html
downscaled climate data
Does anyone know of a source of downscaled climate prediction data for North America? I am looking for predictions at a finer than 1 degree lat/lon resolution for use in habitat modeling. All of the global data that I have found use a coarser resolution. Many thanks. Clinton Clinton Jenkins Nicholas School of the Environment and Earth Sciences Duke University Box 90329 LSRC A201 Durham NC 27708 USA Phone: (919) 613-8143 Email: [EMAIL PROTECTED] http://www.nicholas.duke.edu/people/faculty/pimm/clintonjenkins.html
Re: Solidarity & Sustainability V2 N3 March 2006
Personally I hear about over population ad nauseum, but I rarely hear solutions or even data. So for anyone interested, there has been progress. The percentage growth in the human population has been slowing for years. It was growing near 2% per year in parts of the 20th century, but has now slowed to about 1.2% per year. The absolute growth rate is now slowing too, dropping from a high of around 87 million per year in 1989 to about 76 million in 2005. The problem is not solved, but I think it is important to recognize progress and encourage it. I quickly pulled these numbers from the Wikipedia, but I have seen them elsewhere. http://en.wikipedia.org/wiki/World_population Cheers, Clinton Jenkins Clinton Jenkins Nicholas School of the Environment and Earth Sciences Duke University Box 90329 LSRC A201 Durham NC 27708 USA Phone: (919) 613-8143 Email: [EMAIL PROTECTED] http://www.nicholas.duke.edu/people/faculty/pimm/clintonjenkins.html
