Optional page title

Optional page description text area...

Header Content Region

Insert text, image or banner ads here, or just delete this text and leave this area blank!

Eastern Hemlock

Latin name:
Tsuga canadensis

Extracted from a waterfront pier near Wilmington, Delaware, the tree used to make this portion of the pier
actually came from a forest located in central Pennsylvania. The outermost tree ring dates to the late 1830s.

Giant Sequoia

Latin name:
Sequoiadendron giganteum

A close up of numerous fire scars on a giant sequoia cross section from Sequoia National Park in California, dating back well prior to A.D. 1000. Look closely! Can you find the sad bearded face cradled by his hands, as if he was crying?

Douglas-fir

Latin name:
Pseudotsuga menziesii

This photo shows the tree rings from a beam extracted many years ago from a pueblo in northeastern Arizona. The section shows many false rings and many micro-rings, suggesting this tree may have been growing in a marginal environment.

Ponderosa Pine

Latin name:
Pinus ponderosa

Close up of tree rings of a ponderosa pine collected at El Malpais National Monument in New Mexico, USA, showing tree rings centered around A.D. 1400. Notice the variability in ring widths indicative of sensitivity to year-to-year variation in precipitation.

Douglas-fir

Latin name:
Pseudotsuga menziesii

Perhaps my most requested image of tree rings, obtained from a small Douglas-fir growing in the Zuni Mountains of west-central New Mexico by my colleagues Rex Adams and Chris Baisan. Not very old, but has some of the most beautiful rings of all my displays!

White Oak

Latin name:
Quercus alba

Oak cores from the Hoskins House in Greensboro, North Carolina, site of a famous battle during the Revolutionary War. The house was built from trees cut in 1811 to 1813, not cut and built in the 1780s as the historical agency had hoped.

Ponderosa Pine

Latin name:
Pinus ponderosa

This ponderosa pine once grew at El Morro National Monument in New Mexico, USA, and was cut many years ago. Once you get up close to the stump, you can see a very old scar from a fire many hundreds of years ago that scarred the tree when it only about 12 years old!

Bahamian Pine

Latin name:
Pinus caribaea var. bahamensis

We collected many cross sections of Bahamian pines that had been cut for an industrial park on the island of Abaco, but the rings are very difficult to date! Many false rings, and the pine appears to terminate tree growth during the dry season.

Longleaf Pine

Latin name:
Pinus palustris

This cross section was one of many that came from an old crib dam across a creek that was exposed after a modern dam broke in Hope Mills, North Carolina in 2003. Such sections from old-growth longleaf pines are very rare and provide information on climate back to AD 1500!

White Oak

Latin name:
Quercus alba

Sometimes you don't have to look far to find beauty in wood, and sometimes it may not be a living tree! After an oak tree was cut a year or two before this section was obtained, decay fungi had already set in, beginning to break the wood down to its basic elements.

Southwestern White Pine

Latin name:
Pinus strobiformis

I collected this fire-scarred pine on Mt. Graham in southern Arizona in fall 1991, and it remains one of the best examples of how we can determine the season of fire by looking at the position of the scar within the ring.

Bristlecone Pine

Latin name:
Pinus longaeva

Bristlecone pines have become one of the best proxy records for those who study the history of volcanic eruptions because the cool temperatures caused by these eruptions create "frost rings" that form when the cells implode from the cold.

Eastern Redcedar

Latin name:
Juniperus virginiana

Many well-preserved eastern redcedar sections have been recovered from prehistoric sites in eastern Tennessee, and they have more than enough rings to date, but we don't have a long enough living-tree reference chronology to overlap with them!

Red Oak

Latin name:
Quercus rubra

Oak is by far the most common genus we find in the many historic structures we date using tree rings in the Southeastern U.S. The genus has good ring variability and rarely has problem rings. This section came from a historic tavern in Lexington, Virginia.

Sugar Maple

Latin name:
Acer saccharum

Maple, birch, beech, and basswood are all examples of hardwood species that form diffuse porous wood, meaning that the ring contains many small-diameter vessels all through the ring. Identifying the ring boundary on this wood type is a challenge to tree-ring scientists.

Live Oak

Latin name:
Quercus virginiana

Live oak is an example of an evergreen oak, which is not common within this genus. As such, the wood is semi-ring porous and the rings are very difficult to see and date. Ring growth is also very erratic, not forming the concentric around the tree that we require.

Douglas-fir

Latin name:
Pseudotsuga menziesii

These cores were collected on Mt. Graham in southern Arizona and show a major suppression event beginning in 1685 when missing rings became evident, followed by many micro-rings. This suppression was caused by a major wildfire in 1685!

Ponderosa Pine

Latin name:
Pinus ponderosa

I find it amazing what trees can record in their tree rings! Here we see a cross section of a pine that was damaged by a major flood in the year 1945 in the Chiricahua Mountains of southern Arizona. Notice the reaction wood that formed afterward.

Pignut Hickory

Latin name:
Carya glabra

Sometimes gray-scale imagery helps define tree rings when measuring. Although classified as "ring porous" species, the rather ill-defined tree rings in hickory tree species form large earlywood vessels and smaller latewoood vessels.

Subalpine Fir

Latin name:
Abies lasiocarpa

Decay has set in on the tree rings of this dead and downed subalpine fir that once grew on Apex Mountain in British Columbia, Canada, but the tree rings can still be measured and crossdated despite this!

White Fir

Latin name:
Abies concolor

We found a beautiful fire scar on this white fir that was used to build a cabin in the Valles Caldera of New Mexico. Thought to have been built in the early 1900s, we instead found the cabin was built form white fir and Douglas-fir trees cut in 1941.

Overcup Oak

Latin name:
Quercus lyrata

These oak cores were collected in northeastern Arkansas to investigate a change in the hydrologic regime of a wildlife refuge beginning in the 1990s. We found that trees at this site experienced a major disturbance event in the 1960s.

Western Juniper

Latin name:
Juniperus occidentalis

Near Frederick Butte in central Oregon, we discovered an unusual stand of western junipers that had the most unusual lobate growth forms we had ever seen. This site yielded a drought-sensitive chronology dating back to the AD 800s!

West Indies Pine

Latin name:
Pinus occidentalis

Above 3000 meters on the highest peak in the Carribean, we found an entire forest of these pines, many with fire scars, living on a steep rocky slope. The forest looked more like the dry ponderosa pine forests of the western U.S.

Whitebark Pine

Latin name:
Pinus albicaulis

Whitebark pines growing in the northern Rockies of the western U.S. can grow to be over 1,000 years old, but the species is slowly being decimated by the introduced white pine blister rust. Many of these ancient trees are now dead with ghostly white trunks.

Shagbark Hickory

Latin name:
Carya ovata

Curiously, tree-ring scientists rarely analyze some of the more common hardwood species in the eastern U.S., such as this hickory, perhaps because such forest interior trees may contain a weak climate signal necessary for crossdating.

Virginia Pine

Latin name:
Pinus virginiana

Blue stain found in many sections of dead pines (both in the western and eastern U.S.) is caused by a fungus carried by a pine beetle. The fungus spreads into the phloem and sapwood of living and dead pines, sometimes creating stunning patterns!

Pinyon Pine

Latin name:
Pinus edulis

Burned sections of pinyon pine are commonly found in archaeological sites in the southwestern U.S. These sections can be carefully broken or surfaced with a razor to reveal the ring structure inside to assist in dating the years of construction of the site.

Red Spruce

Latin name:
Picea rubens

Conifers in the highest elevations of the Appalachians of the eastern U.S., such as this red spruce, don't experience wildfires very often, but when fires do occur, they can create numerous fire scars even in this fire-intolerant species. Notice the growth release!

White Spruce

Latin name:
Picea glauca

This tree was located in the Canadian Rockies on the toe slope of an active avalanche path. The scar was created by a debris flow or snow avalanche which struck the tree, killing a section of the living tissue. The avalanche can therefore be dated to its exact year!

Engelmann Spruce

Latin name:
Picea engelmannii

I worked considerably in the spruce-fir forests of southern Arizona in my earliest years in dendrochronology, and learned that trees with limited sensitivity can provide a vast amount of information on the history of these forests.

Pondrosa Pine

Latin name:
Pinus ponderosa

The lava flows of El Malpais National Monument in New Mexico contain vast amounts of remnant wood, mostly ponderosa pines such as this sample, and the tree rings on these samples go back nearly 2000 years! Notice the year AD 1400 on this section.

Chestnut oak

Latin name:
Quercus montana

In the southeastern U.S., hardwood species are often scarred by wildfire. Most often, this also will cause considerable decay in the sample, but this oak had several well preserved fire scars, suggesting fire was common in these drier, lower elevation sites.

Pondrosa Pine

Latin name:
Pinus ponderosa

I originally sampled this stump in 1991 for its fire scars, located in El Malpais National Monument of New Mexico. I found it again 20 years later and was happy you could see the tree rings and fire scars clearly! It had originally been logged in the 1930s!

small portfolio1 small portfolio2 small portfolio3 small portfolio4

 

 

 

get in touch

Thank you for your feedback!

Please tell me what you think about my web site. What did you like or not like about them? Were they useful and educational? In what areas could I improve these web pages? I take your comments seriously! Simply contact me by e-mail (use the link at the top) and tell me what you think.

Current Feedback Page
Feedback Archive Page 9
Feedback Archive Page 8
Feedback Archive Page 7
Feedback Archive Page 6
Feedback Archive Page 5
Feedback Archive Page 4
Feedback Archive Page 3
Feedback Archive Page 2
Feedback Archive Page 1

  1. What a handsome, well-structured, and witty web page, complete with tree rings. It's a delight to read... and admire: What an immense scholarly record."
    - Mark Littman, University of Tennessee Science Forum

  2. "This has to be one of the most informative web sites I have ever found. Congratulations. Thanks for putting up this site - it truly is a great resource."
    - Julian A. Dunster, Dunster & Associates Environmental Consultants Ltd., Canada

  3. "I do like your dendrochronology pages and will be learning more about it as it relates to the fire cycle as we do fire weather forecasting here and support of large wildfires.
    - Dan LeBlanc, National Weather Service, Flagstaff, Arizona

  4. "I am an archaeology undergraduate currently looking into doing a field course in Dendrochronology. Through all the web sites I have been, this has by far been the ultimate best of them all. This site has it all. Thank you very much for this, for it stands as a foundation and reference point from which I will be launching into the world of Dendrochronology."
    - Ed Broughton, Northern Arizona University

  5. "I found all I needed plus stuff in my locality of S. Wales, UK. I found so little on the other sites I looked on and then tried yours. Thank you -- its a brilliant site and made me want to do more research on trees."
    - Jenny Topaz, Wales, United Kingdom

  6. "Your lists and all your efforts for the dendro community are daunting and wonderful. We use your website all the time. I hope it doesn't overwhelm you keeping it up. I'm so impressed by your service to the international community."
    - Connie Millar, USDA Forest Service, Albany, California

  7. "Your website is wonderful! I've already gleaned some good hints how to do sanding, and perhaps staining for better resolution."
    - Tom Montagno, Simmons College, Boston, Massachusetts

  8. "I have been a fan of your website for a few years now -- you seem to be well connected in the tree-ring world!"
    - Mark Swanson, College of Forest Resources, University of Washington

  9. "I'm trying to find some information to help 5th graders get the basics on tree rings. You have a lot of interesting information!"
    - Teber Amos

  10. "Thank you for your web pages -- really impressive -- I have linked to it from my wood anatomy class web site for years now."
    - Elizabeth Wheeler, North Carolina State University

  11. "Thanks for the excellent website. It has been an invaluable resource in my senior research project  (undergrad Environmental Science) at Capital University. The site has excellent organization and is very user friendly. Dendro is a fascinating field; thanks for making it easier to understand."
    - Jack Byrom, Capital University, Columbus, Ohio

  12. "Just wanted to drop a line or two your way to say thank you for the fun and informative site!  I am a home-schooling mom of a first grader who found your site via the education index online. We are studying trees presently and have fallen in love with the great pictures you have provided. Your passion and enthusiasm really show. Thank you for sharing!"
    - Tangela

  13. "Many thanks for the great web site. I have just started a tree ring project at UC Davis and have found the site to be a tremendous resource. What a concept, a useful web site!!"
    - Fabrice De Clerck, Assistant Director of International Programs CA&ES, University of California, Davis

  14. "I visited your site and found it very interesting."
    - Laura Bley, Bley Investments, Ft. Worth, Texas

  15. "I have been looking all throughout your website and it deems truly beneficial to the better understanding of dendrochronology."
    - Bri Foster, Sacramento, California

  16. "I recently came across your wonderful dendrochronology website and found the information in it to be very useful to me!"
    - Kate Ramsden, Western Washington University, Bellingham

  17. "Thank you for your valuable web sites for dendrochronologists."
    - Minoru Inoue, TerraTech, Tokyo, Japan

  18. "I'm perusing your website, which is amazing."
    - Lee Romney, Los Angeles Times

  19. "Your page is indeed the best around, and it helped me a lot for getting a better idea of tree ring research!
    - Ursula Hertling, Urban & Fischer Verlag, Jena, Germany

  20. "I thank you for providing such an excellent website."
    - Becky Sykes, University of Southampton, England

  21. "I was very pleased to stumble across your website as it is most useful and contains so much information!"
    - Annabelle Clarke, Plymouth, United Kingdom

  22. "Your website is quite spectacular. I have found it a treasure trove of information. I am a retired associate director of the Lawrence Livermore National Laboratory, and us retired folks need access to resources like yours."
    - John L. Emmett, Brush Prairie, Washington

  23. "This is very well organized and interesting.  It must represent a very powerful resource for the practicing dendrochronologist."
    - Paul Digney, Vancouver, British Columbia, Canada

  24. "My son Scott is seven and in second grade, doing a science report on tree rings. We got on to your web site looking for pictures of tree rings. Maybe I'll even learn some interesting things!"
    -Steve Savko

  25. "I'm a retired physician and have always loved trees. I must confess my ignorance, however, until today I did not even know there was such a word as dendrochronology. Thanks to you and your website I already know far more than I did yesterday."
    -William S. Carter, M.D.

  26. "Thank you for a spectacular and very useful web site."
    - Forrest M. Mims III, Seguin, Texas

  27. "Thank you so much for your web page on Dendrochronology. I’m doing a research paper for my ninth grade English class, and I’ve been looking for a website that explained the methods of tree-ring dating used in one of my resources. Thank you for making the information easy to obtain and understand!"
    -Sivan Goobich

  28. "I am currently working on an interactive tree ring demonstration to share with visitors at the Museum of Discovery and Science in Fort Lauderdale. Your website has been extremely helpful!"
    - Laura Khorozov, Museum of Discovery and Science, Ft. Lauderdale, Florida

  29. "I'm interested in learning about using tree cores to examine seismic activity. Thanks for your web pages."
    - Ellen McCallie, Missouri Botanical Garden

  30. "Thank you very much for the Ultimate Tree-Ring web pages. They are really excellent."
    - Halil Çakan, Cukurova University, Turkey

  31. "I have used your web site often in my teaching and very much appreciate all the effort you have put into making information on dendroclimatology accessible."
    - Catherine Souch, Department of Geography, Indiana University

  32. "I was looking around for a fire scar image and found some on your Ultimate Tree-Ring Site - great job on maintaining such great resource!"
    - C. Mark Eakin, Chief of NOAA Paleoclimatology Program

  33. "I have to agree your site in an incredible store of knowledge for anyone remotely interested in trees. How do you do it?"
    - Andy Cochrane, Cardiff, Great Britain

  34. "Fort Stewart is constructing an outdoor classroom/environmental education nature trail as part of its museum. Your website was an enormous help."
    - Beth Anee-Johnson, Field Crew Leader, Ft. Stewart, Georgia

  35. "I visited your website recently and found some fascinating information that I thought would benefit our woodworking club."
    - Rick McGill, Eastman Chemical Company, Kingsport, Tennessee

  36. "I'd like to thank you for the valuable information you have made available on the web. My 13 year old son is doing this year's science project on tree ring growth and the solar cycle. Your web sight has really been an education for him and me as well. (I must admit I've been intrigued and obsessed with this project as well). My son begged me for an increment borer, I relented despite my fear that every tree in the yard would end up with a hole in it. Both my son and I are getting a great education and you're the one that started it. Thanks again."
    - John Ceccherelli, IBM Global Procurement, Hopewell Junction, New York

  37. "I stumbled on your "Ultimate" web pages by accident while unsuccessfully trying to find out how much rain we've had in Knoxville in the past week. I wanted to let you know that your web site is nothing short of awesome! You must have spent thousands of hours developing this site, which surpasses that of many major corporations in terms of interest, appearance, and navigability, not to mention the sheer quantity of information presented."
    - Ann Roberson, President, The University of Tennessee Research Corporation

  38. "I'm very impressed with you web site and look forward to using it."
    - Gene Bidwell, University of Kentucky

  39. "Great, informative sight - the most comprehensive I have seen. The University of Arizona should be so thorough."
    - Mark Haynie, Ganado Intermediate School, Arizona

  40. "Thank you for creating such a useful website on dendrochronology. I am an undergraduate student in Wisconsin and I am currently working on my capstone project which is a study of Thuja occidentalis in Chequamegon Bay on Lake Superior."
    - Sarah Oppelt, Northland College, Ashland, Wisconsin

  41. "Just thought I would let you know - what a wonderful site. I'm studying Archaeology at Exeter University in England and your site will be a great help. Such a breath of fresh air to see someone sharing their work this way."
    - Denene Reilly, Exeter University, United Kingdom

  42. "I have been using your wonderful web page. Thank you very much for creating such a great resource."
    - Michelle Hegmon, Arizona State University

  43. "I wanted to thank you for having such an excellent website. I am a senior Biology major at the University of Nebraska at Omaha; the information you have available for your students has been most helpful."
    - Paul Berger, Australia

  44. "Your tree ring website has already been really helpful."
    - Anna Trybis, United Kingdom

  45. "I've loved your web pages for some time and am referring to them in a paper I've been invited to write for Australian Journal of Botany."
    - Stuart Pearson, Australia

  46. "I just wanted to let you know how impressed i am with your ultimate tree ring web page. I am a 2nd year Ecology major at Michigan Technological University and your site really helped me with an assignment on dendrochronology I am currently working on. Keep up the good work!!"
    - Susan Balint, Michigan Technological University

  47. "I am writing to thank you for the wealth of information and alternate resources you provided me with... Finding almost an unlimited amount of additional sources, the research nightmare became a breeze. Thanks again!
    - Barb Moore, Hiram College, Tallmadge, Ohio

  48. "What a great web site! I am doing Archaeology at University. Needed information on dendrochronology, couldn't find any then found this site. I can't describe just how useful this site has been to me. Thanks."
    - Matthew Bresnen, University of Wales, Bangor. United Kingdom

  49. "I've a presentation to make over the next couple of days, to an area school's fifth graders, on forest ecology (including tree growth and silviculture). I was poking around the web looking for an easy to understand example of the cross section of a tree (I'm planning on passing out "tree cookies") and found your web site.......Great, easy to understand. Thanks for the information."
    - Michael Schira, Michigan State University Extension, Iron Mountain, Michigan

  50. "I am teaching a Biology course (High School) and would love to do a section on tree ring dating. Any suggestions of resources I might use to help my students understand what is going on. Thanks for any help you can give."
    - David Holder

  51. "I really enjoyed looking over your web site. I'm a Webelos Cub Scout Leader and a Homeschooling mom. What I was interested in for my Cub Scout meeting (for our Forestry merit badge/pin) was a crosscut of a tree."
    - Sue

  52. "I certainly enjoyed your web site, and hope you have time to help me with an interesting problem that might be solved with dendrochronology techniques.
    - James Davidson

  53. "Compliments for your website."
    - Peter Weyman, Staatliche Fachschule für Agrarwirtschaft, Landshut, Germany

  54. "I am enjoying the forum, and also very impressed by your web site."
    - Ted Hogg, Northern Forestry Centre, Canadian Forest Service

  55. "I have found your web site fascinating."
    - James Stileman, London, England, United Kingdom

  56. "Your tree-ring pages are excellent! Thanks for making so much great information easily accessible. Your efforts will do much to further dendrochronology!"
    - Rob Fiegener, University of California - Davis

  57. "I've followed, and have been increasingly impressed by your website over the years. The information and links have been incredibly helpful, and I've been especially appreciative of the detail and comments you've provided. Big help for this dendro-neophyte! Thanks."
    - Patricia Weyrick, Cold Regions Research and Engineering Laboratory, Hanover, New Hampshire

  58. "My name is Tyler Howell and I am a five year old boy in Kindergarten at Norton, Virginia. My teacher's name is Ms. Armbrister. I went to your web site and liked it."
    - Tyler Howell, Norton, Virginia

  59. "WOW. You have done a fantastic job in putting together your web pages. To say the least, I am truly impressed and I haven't followed all your leads yet. In fact, UT ought to be very proud of your work; and if you need me to tell them so, let me know who to write."
    - A.C. Barefoot, Raleigh, North Carolina

  60. "Thanks for your work on keeping the web pages going. They look great!"
    - Edie Taylor, Department of Ecology and Evolutionary Biology, University of Kansas

  61. "Superlatives and kudos!  What an excellent resource."
    - Joe Baker, New York Museum and Science Center, Rochester, New York

  62. "I am a home-school mom teaching children in grades 3 thru 8. Your site is awesome, although somewhat overwhelming with its abundance of information!"
    - Cindy Hanner, Quimby, Iowa

  63. "I think we "scientists" don't thank one another enough, so I want to say your selfless efforts on behalf of tree ring science are much appreciated. And, congratulations and thanks for your wonderful "ultimate" web site."
    - Owen Davis, Department of Geosciences, The University of Arizona

  64. "I'm a graduate student in the Physics Department at Bandung Institute of Technology, Indonesia. I've seen your wonderful homepage. It is interesting to read your homepage and it is really useful for such beginners like me."
    - Wendi Zarman, Physics Department, Bandung Institute of Technology, Indonesia

  65. "Your site is a life saver. I have a huge project due on tree-rings relating to hurricanes. Without your wonderful explanations and definitions I would be lost. Thank you, thank you, thank you."
    - Liane

  66. "Your site is great. I only got here after perusing several dozen other dendrochronology sites and yours is the best of the lot."
    - Jay Cross, Internet Time Group, Berkeley, California

  67. "Just discovered your site and am anxious to explore it. I am working this summer as a arts and crafts counselor at a day camp for Brownie and Junior Girl Scouts (grades 1-6!). One of the badge activities is counting tree rings so I have been asked to incorporate that with a craft activity."
    - Peggy Ann Brown

  68. "Your site has been an enormous help in learning about dendro."
    - Mark Dahlager, Science Museum of Minnesota

  69. "I have always loved your ultimate tree ring pages, especially the ones of the cross sections of individual specimens showing the beautiful undulating patterns. They are great inspirations for paintings!"
    - June Julian, A World Community of Old Trees

  70. "I have spent an hour searching your wonderful web site, and am truly impressed by it."
    - Alan R. Taylor, Swan Valley, Montana

  71. "I visited your website and enjoyed reviewing it. I am currently working on projects involving ancient Egyptian history and am hoping you can help."
    - Joseph Thimes

  72. "I would like to thank you for all the work you do in keeping the dendro community informed of recent publications, etc. Its a great help to people in the more far flung parts of the world."
    - Louise Cullen, Ecology and Entomology Group, Lincoln University, New Zealand

  73. "You have a nice web site on dendrochronology."
    - Murrell Selden

  74. "Great web site. I teach third grade, and we are studying tree rings. I'm trying to find a diagram or pictures of the rings and growth patterns. Can you help?"
    - John Robby

  75. "Yes, I did like your web site. It is one of the top two I have came back to over and over either by link or by choice. Your site is well laid out and your choice of color and layout is great."
    - Donna Wilkinson

  76. "We reviewed your tree ring site on my NetWatch page in Science about 3 years ago. I'm now compiling some links for an all-paleoclimate page (to go with a special issue of Science on paleoclimate). I plan to include your site even though we've highlighted it before."
    - Jocelyn Kaiser, Science Magazine, Washington, D.C.

  77. "Your web site is amazing. I don't know where you get the time."
    - Ellen Anderson, Forestry Sciences Lab, Juneau, Alaska

  78. "I have been meaning to thank you for keeping a link to my research abstract in your marvelously looking and continuously evolving home page during all these years. Please keep it up. You are making it extremely convenient for people to get more information about tree-rings and its science. I am glad I always keep a link to your home site."
    - Pablo D. Baldazo, Rey River Consulting

  79. "Just a quick note to tell you how much I appreciate your help and the time you took out from your busy schedule. You were helpful and enabled me to complete my essay on time."
    - Andy Douglas, United Kingdom

  80. "By the way, your website is outstanding; congratulations!"
    - Robbie Jones, Architectural Historian, The Hermitage, Home of President Andrew Jackson

  81. "I located you through your fascinating Ultimate Tree Ring Web Pages. Any guidance that you or your colleagues could provide would be greatly appreciated."
    - William Voorhest, Long Island, New York

  82. "You have a great collection of images on your web site."
    - Glenn Strait, Editor, Natural Science, The World & I Magazine

  83. "At the suggestion of Rex Adams, I visited your Ultimate Tree Ring Page, and it truly is. You've provided excellent information and games, lessons, quizzes that can keep people looking."
    - Jane Smith, USDA Forest Service, Fire Sciences Laboratory, Missoula, Montana

  84. "I was logged on to your homepage last night. You are one busy, organized soul. It looks really good, Henri. So easy to use. Thank you very much for all your efforts."
    - Rex Adams, Laboratory of Tree-Ring Research, The University of Arizona

  85. "I enjoyed your web site and appreciate the information and education that you have made available. Great job."
    - Jen Chase, Project Forester, Colorado State Forest Service

  86. "I don't know how you stay on top of your web pages - so much there!"
    - Martin Bridge, Institute of Archaeology, University College, London, England

  87. "Your web pages are a great resource."
    - Nina Hewitt, Department of Geography, Depaul University

  88. "You're providing a great service with your web page! Thanks very much."
    - Jill Silver, Hoh Basin Regional Biologist, Port Townsend, Washington

  89. "Your help is greatly appreciated, as are the ITRDB computer programs that I am learning to use."
    Alison Schneider, Colgate University

  90. "We recently had several dead trees cut down at our house and the kids were fascinated with the tree rings, so your site has been very very helpful!"
    - Molly Tominack

  91. "Your web page is awesome."
    - Michael Murray, Oregon Natural Heritage Program, Portland, Oregon

  92. "I actually found your site yesterday and it was incredible! Your site really helped me out. I am just getting started on my research here at OSU, and want to do some dendroecological work in the "cross timbers" of Oklahoma."
    - Stacy Clark, Department of Forestry, Oklahoma State University

  93. "I visited your web site and send you my hello and compliments. I like your page and it is interesting for me to see your successes and plans."
    - Konstantin Popov, Russia

  94. "I think your website was exactly what I was looking for while surfing the net for relative information."
    - Melanie Koch, University of Washington - Bothell

  95. "I love your web pages. They have so much information. I am going to be visiting it more and more. I need more to time to read and digest all the data that you provide."
    - Jeff Porter, Texas

  96. "Just a note to say thanks for some great educational materials. I teach an "Earth and Space Systems" class and it's nice to be able to send my students to this type of site."
    - John O'Leary, Dennis-Yarmouth Regional High School, Cape Cod, Massachusetts

  97. "Thanks for putting together such a complete resource on dendrochronology - I've learned a lot from it. It seems almost every web site concerning tree rings directs me back to your pages!"
    - Elizabeth Hammond Pyle, Department of Earth and Planetary Sciences, Harvard University

  98. "I love your web-site! I am a horticulture student and am doing a paper on what tree rings can tell us; I found your site and have spent many hours learning. Your web-site has so much information, many useful links, and personality. This is the most awesome web-site! Thank you for all of your time and effort; I very much appreciate you sharing this with all of us."
    - Mary L., Green Bay, Wisconsin

  99. "Thank you for the "Ultimate Tree-Ring Web Pages." Your compilation has been a great resource that I have used many times."
    - Greg Barlar, Oak Ridge National Laboratory

  100. "I really enjoy your tree-ring pages and have been referring to them for the past two years."
    - Paul Muto, Nova Scotia Agricultural College
slide up button
Google Search Helps Support These Web Pages!