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. "I have enjoyed browsing through your site."
    - Kerri Still

  2. "Nice site, the information is very easy to access."
    - John Fitzgerald

  3. "I am a young geographer interested in dendrochronology, and I think I will benefit from your page a lot in my studies."
    - Suleyman Incekara, Fatih University, Istanbul, Turkey

  4. "Thanks for all of your work for the dendro community."
    - Wendy Gross, National Geophysical Data Center, Boulder, Colorado

  5. "I'd like to congratulate you on creating a great web resource. I am going to try teaching a dendrochronology module in the climate change section of my community ecology class and I know that I will be directing my students to read your pages."
    - Mark Bush

  6. "We're looking up all kinds of addresses, and found lots of them on your web site! Thanks for that WONDERFUL DATABASE, it's been a godsend."
    - Jackie Mather, Laboratory of Tree-Ring Research, University of Arizona

  7. "What can I say? The name of these pages says it all. These are indeed the ultimate tree-ring web pages. Henri Grissino-Mayer has indeed achieved his aim. They are well laid out with links to a variety of tree-ring related sites from all over the world, with a wealth of interesting and useful information. I would recommend these pages to anyone who has a query concerning dendrochronology, be they a specialist or just an interested member of the public. I give this site 10/10."
    - Caroline Hall, University of Sheffield, United Kingdom

  8. "I love your web pages. I am training to be a teacher and used it to work on a lesson plan. It was very educational. Thank you for compiling so much information in one location."
    - Kathy Raphael

  9. "A comprehensive resource for committed dendrochronologists! A neat, user-friendly site that covers dendrochronology principles, references, databases and software with excellent photos of sequoias, ponderosa pines and the like under blue American skies! Also features job advertisements and provide links to journals and job databases."
    - New Scientist, Hotspots in Environment and Ecology

  10. "Holy dendrochronology, Batman! If you want to know anything about tree-rings, this is the place to go! My favorite section is the gallery."
    - Scienceman's High Quality Links for Biology

  11. "An excellent web-based guide to tree-rings. Created by Dr. Henri Grissino-Mayer, this page contains links to tree-ring software, online databases and a host of other useful subjects."
    - Scott St. George, Winnipeg, Manitoba, Canada

  12. "Thanks for the great service you are doing for the dendro community."
    - Carlo Urbinati, Editor, Dendrochronologia

  13. "I love your web pages, I consult them all the time and recommend them to lots of people (who also love them!). Thanks for maintaining these great pages!"
    - Emily Heyerdahl, Fire Science Laboratory, Missoula, Montana

  14. "I have not spent much time at this site, but hope to in the near future."
    - Ronald Barr, Tempe, Arizona

  15. "Thanks for all your work in keeping the dendro community connected."
    - Robert P. Long, USDA Forest Service, Delaware, Ohio

  16. "I loved your web site - you are clearly a kindred spirit."
    - Edmund Colville, United Kingdom

  17. "I checked out the new web page, looks nice!"
    - Laary Cushman, Aiken, South Carolina

  18. "Please continue the good work. People like me need teachers dedicated like you. Thanks for caring."
    - Jonathan Green, United Kingdom

  19. "I have visited your home page regarding dendrochronological studies. Thanks for putting such a lot of information about it. I found it really helpful for those who are interested in this field."
    - Purushottam Dokhale, Cornell University

  20. "Great to see your web page here in Vol country!! It's a wonderful site."
    - Kim Raia, Department of Geography, The University of Tennessee, Knoxville

  21. "You have a great, great site... very impressive."
    - Jim Roh

  22. "I like the new format, keep up the terrific job."
    - Alan Lane, Velmex, Inc., New York

  23. "Thank you for your great work. Your site is really good for the dendro community, students, and those who simply need information on dendrochronology."
    - Katarina Cufar, University of Ljubljana, Slovenia

  24. "Your site has been highly rated by Schoolzone's panel of 400 expert teachers. This is in recognition of the fact that it is a good educational site: useful for teaching and learning and easy to navigate."
    - Philip Collie, Schoolzone, United Kingdom

  25. "I just visited your tree-ring web page and enjoyed it very much."
    - Pascale Poussart, Department of Earth and Planetary Sciences, Harvard University

  26. "This website has a lot of useful information for me and I really enjoyed it. I am a forest pathologist and I use dendrochronology as a tool for the investigation of forest decline. Bulgarian forests cover about 30% of the country's area. Thank you for this wonderful website!"
    - Stefan Mirtchev, University of Forestry, Sofia, Bulgaria

  27. "I am a member of a team of editors writing the Usborne Science Encyclopedia, a 432-page highly-illustrated reference book aimed primarily at 9-12 year-olds."
    - Laura Howell, Usborne Science Encyclopedia, United Kingdom

  28. "I love this page, It continues to serve the dendrochronologically minded community as THE clearing house for resources! Thank you for your tremendous efforts!"
    - Robert T. Trotter, Flagstaff, Arizona

  29. "I don't know how you were able to create and maintain such a unbelievable website... Thank you for all your efforts on the "Ultimate" site."
    - Donna J. Christensen, Madison, Wisconsin

  30. "I really enjoyed your site. Found it to be very informative and easily understandable."
    - Canduace Cloy, Albion, Michigan

  31. "You have a very informative website."
    - Steve Mayoh, British Columbia, Canada

  32. "Great pages! Thanks for all the info!"
    - Melanie Wilson

  33. "I have been a visiting scholar at the University of Arizona, Tucson, on a Haury Fellowship for the past two months, learning about the application of dendrochronology for archaeological purposes. The biblilographies from these web pages will be invaluable when I return to the UK. This website has a lot of other useful information."
    - Paula Gardiner, University of Bristol, United Kingdom

  34. "Your web page is interesting."
    - Charlotte Kanabahita, Uganda
  35. "Thanks to your great web site, my freshman son got an A on his biology project. Mark measured the ring widths of a 27" diameter sugar maple trunk that we counted back to about 1890."
    - Elwin C. Robison, Kent, Ohio

  36. "I have frequented your most excellent page several times for the past year looking for references and other stuff."
    - Lars Wichmann, The Royal Veterinary and Agricultural University, Copenhagen, Denmark

  37. "I want to extend a sense of my enjoyment of your web site. Your conscious effort to create a collaborative learning process which includes a liberal view of sharing knowledge is what the future of problem solving is going to be about... Thank you, Henri, for your attention, your web site, and the marvelous, creative way that you are engaged in your work."
    - Timothy Down

  38. "The web pages are clearly written. Because glitz is minimized, they load fast and in a straight-forward manner. This is much appreciated. I will recommend your site to a colleague at Texas A&M..."
    - Suzanne H. Costanza, Malden, Massachusetts

  39. "I just stumbled across your web page I am really enjoying it. Thanks for responding to my e-mail and for the information."
    - Chris Smith, Texarkana, Texas

  40. "Thank you for your instructive site about dendrochronology."
    - Ulrich Heinen, Köln, Germany

  41. "I'm trying to prepare and display a cross-section of swamp white oak (44", taken at 80" height) that our church took down for parking. I saw the cross-section at the ranger station at Sabino Canyon with the University of Arizona credit. Rex Adams gave me very helpful info and your site. Thank you!"
    - Rev. Tom Steensma, Decatur, Indiana

  42. "Thanks for the help. My Cub Scout Den is studying forestry, which includes a requirement to learn about tree rings and what they tell us about trees."
    - M. Beesley, Houston, Texas

  43. "Good information. Thanks for putting it together."
    - Jay Franklin, Dallas, Texas

  44. "Nice site."
    - John Ohrenstein, Santa Rosa, California

  45. "Thank you for putting such good information that folks like me can learn from folks like you. It took you years to gain this knowledge that I can gather in a few moments on my computer. Thank you for sharing with me."
    - Russell Odell, Hemet, California

  46. "I can't even imagine how you can maintain this site! I am VERY impressed that you do--it's an awesome resource. Thanks for doing it!!!"
    - Brian McCarthy, Department of Environmental and Plant Biology, Ohio University

  47. "Fascinating subject."
    - Peter Farmer, Cheltenham, England

  48. "Great job on the site! I really like the questions & answers you added to the photos in the gallery section. That effort really increases the educational value of your site. I wish that more people working in the sciences would add simple language explanations to their sites, as it provides such a great resource to students! Thanks for your efforts."
    - Janet, Kingfisher Consulting

  49. "I have been visiting your Ultimate Web Page time to time. It is very nice and perfect for dendrochronologists, students and other persons interested in dendrochronology. Thank you very much."
    - Unal Akkemik, Turkey

  50. "I am a 4th year student in Honours geography at UWO. This is a dendrochronology project I am completing for this term. Topic title: Dendrochronology events (e.g. fire, avalanches, glacial advance/recession etc.) and what they tell us about the climatic record. Thank you for your efforts to expand dendro knowledge to newcomers."
    - Bill Phillips, University of Western Ontario, Canada

  51. "A very interesting site."
    - David Smale, Allied Associates Geophysical Limited, United Kingdom

  52. "Excellent info. Thanks."
    - Maris Valkass, Redondo Beach, California

  53. "This website was very useful for me in my Introduction to Dendrochronology course at the University of Winnipeg. Thanks!"
    - Karen Dunham, University of Winnipeg, Manitoba, Canada

  54. "I really liked this site because I had a paper due for anthropology and I could not find any books on dating methods in the libraries."
    - Veronica Martinez

  55. "Wow! What a site, what a guy! Two months ago I had never heard of dendrochronology. I'm a senior at Utah State University - doing research in an archaeology class. Thanks for the incredible tour! I'm a tree lover. Bought a house because of the "largest in town" cottonwood tree. It has 14 large trunks that shoot up from the base in an oval shape. There's evidence of tree house work 20 feet up on the trunks. This is a fascinating field, and I appreciate all of your obvious hard work in making it so fascinating. Thanks."
    - Bobbe McGhie-Allen, Utah State University

  56. "I am currently a student at SCSU and I'm taking a climatology class. This page was useful for pictures and some basic info. about tree ring dating. My paper is on dendrochronology and climate change. Thank you very much."
    - Shelley Bell, Southern Connecticut State University

  57. "I am a science teacher and I was looking for pictures of tree-rings to show my students. I thought I'd look on Yahoo to find some and I must say that I am very impressed with your website. I am sure I will find what I am looking for."
    - Carole-Lyne Ratel, Montreal, Quebec, Canada

  58. "Thanks for constructing this site. My Botany 130 students are using it."
    - Wendel J. Johnson, University of Wisconsin

  59. "You have always been a perfectionist with your home page, and I greatly appreciate your efforts!!!"
    - Pete Groth

  60. "I really do appreciate the web page...in fact, much of what I know about tree ring research began right there! This web site has been of immeasurable help! Thanks again for taking the time to make such a useful source of dendrochronology-related science."
    - Leda Kobziar, University of California, Berkeley

  61. "You have a great website that I am in the process of working through."
    - Phil Camill, Department of Biology, Carleton College

  62. "I'm a biology teacher at a high school in Berlin, Germany and I enjoyed your pages very much. I can use your information for my lessons very well. Thank you very much."
    - Werner Winkler, Berlin, Germany

  63. "I love your web-pages; they have been an excellent sources of information."
    - Jennifer Overman, Wake Forest University

  64. "What a lot of thought went into this website! It's really good."
    - Michelle Cacho-Negrete, Maine

  65. "My 13-year-old niece has a school project on dendroclimatology and wants to use as part of her report an analysis of wood from three trees chopped down in her family's yard (Coatesville, PA) this year. She is starting from scratch--and so am I, but I was able to print out from your site and its links what she needs for a beginning (including data for her city from the National Climactic Data Center). I am fascinated by what I have learned so far and am pleased that I am able to help her understand the methodology that she will not actually be using. Terrific site! Thanks again!"
    - Jan Trembly, Bryn Mawr College, Pennsylvania

  66. "Great site! I am a mover of 30" to 60" (dbh) caliper trees. Everyone wants to know the age of the trees we are moving."
    - Tim Thornhill, Total Landscape Technologies Inc., New York

  67. "I found your site while looking for information about tree dating - the information is super! Thanks for the work you're doing."
    - Ray Hasson, Ledyard, Connecticut

  68. "First of all, thank's for your wonderful WEB SITE!"
    - Franco Bressan, Italy

  69. "What I've seen so far is very interesting!"
    - Molly McGilp, Minnesota

  70. "Just surfing the Archnet and found you. I am reading for a Masters Degree in Forensic Archaeology and I found your site as I surfed around the Web. I found it very helpful."
    - Barrie Simpson, Birmingham, United Kingdon

  71. "I'm a Certified and Consulting Arborist. Cool stuff! Just checking it out. Thanks."
    - Ken Menzer, Auburn, California

  72. "Excellent, informative site!"
    - Lawrence M. Barker, Norfolk, England

  73. "Your page is very informative."
    - Rodney Ninow, Natural Images

  74. "A continuing thanks for your uncompensated labors!!"
    - Donald J. McGraw, Associate Provost, The University of San Diego

  75. "Congrats on the milestone!! I can just imagine the time and effort you spend on those pages and they are such a service to the tree-ring community."
    - Peter M. Brown, Rocky Mountain Tree-Ring Research, Ft. Collins, Colorado

  76. "My compliments for your site! Very well done."
    - Cor Kwant, The Netherlands

  77. "We found your web site when looking for high quality sites dedicated to education, literacy or youth."
    - Patrick, Hooked on Phonics

  78. "Thanks for your help, and for maintaining your web pages... Great resource for those not fully indoctrinated into the dendro world."
    - Matt Kaufmann, University of California, Santa Cruz

  79. "I think you have the greatest dendro site on the web! Your website is VERY helpful for students!"
    - Anita, University of Tennessee

  80. "I wanted to write to say thanks for your homepage and all of your reference collecting. I have used it extensively and plan to continue to do so. Thank you for all of your hard work."
    - Neil Pederson, Tree-Ring Laboratory, Lamont-Doherty Earth Observatory, Columbia University

  81. "I sure appreciate you dendrochronology web page, it has excellent information and is so well organized. I have also told quite a few people about your great page."
    - Scott L. Stephens, California Polytechnic State University, San Luis Obispo, California

  82. "Kudos for your tree ring page. I found all the info. I need to start tree ring research at Emma Willard School! Keep up the good work!"
    - Jonathan Calos, Emma Willard School, Troy, New York

  83. "I've just been browsing tree/plant sites and came across your site and then on to your homepage. Thanks for a great site (sites)."
    - Martin Froggatt, Derbyshire, England

  84. "I never understood tree dating and the age of trees by the rings. I hope to gain knowledge of tree dating by reading your information you have on your web site. Thank you."
    - Valerie Purry, Jackson, Mississippi

  85. "Great page! I work for a horticultural growing media company and am producing an ad for our forestry products."
    - Dave Hackney, Sun Gro Horticulture

  86. "It is an EXCELLENT site!!!!"
    - Yi-ching Lin, University of Illinois, Urbana-Champaign

  87. "I am a third grade science teacher. I was looking for information on measuring the age of trees in order to expand my students' knowledge about measuring. I did a general search on trees and was intrigued by this listing."
    - Nora A. De Los Santos, La Feria, Texas

  88. "I'm doing a thesis on the subject of tree-rings and surfing into this site just opened my eyes. I found great information espacially on the forum - this is a great idea, and so much easier then phoning or library search. So, THANKS A LOT, and I'll surely visit this again (maybe interact on the forum)."
    - Klaartje van Loy, Belgium

  89. "Very good site with lots of very useful information. Keep up the good work."
    - Michael Worthington, Oxford Dendrochronology Laboratory, England

  90. "I am a first grader looking for tree growth ring info for my apple tree that was blown last week so I can show kids at school (blown down by a wind storm). My grandpa is helping me."
    - Tyler Owen, Springville, New York

  91. "I also wanted to thank you for the excellent website you've developed. I know it must have been a lot of work, but it serves as a really valuable resource, especially for those of us who are neophytes when it comes to dendrochronology."
    - Wayne Harrison, Calaveras District, Arnold, California

  92. "I'm a new graduate student in geography at the UofA and am particularly interested in GIS, cartography and applications to dendrochronology and old-growth forests. I'll be back as often as I can - there are some really useful tips here for me to make notes from before I start my field work. Thank you for putting this page on the Web!"
    - Suzanne Pride, Department of Geography, University of Arkansas

  93. "Thanks to you for having such a great Web site."
    - Craig Brunstein, U.S. Geological Survey, Denver, Colorado

  94. "Very, very impressed with your accomplishments. Keep up the good work."
    - Mel R. Herana, San Diego, California

  95. "I must admit that your web page/database is quite impressive. I found so much good information about dendrochronology."
    - Jef DeBerry, Christopher Newport University, Newport News, Virginia

  96. "I found your web site most useful. Best wishes from Dundee."
    - Keith R. Skene, Department of Biological Sciences, University of Dundee, Australia

  97. "I have visited this page a zillion times and always find what I'm looking for. I am sitting in a dendroecology seminar here at SIU and have turned all the grad students onto it as a resource. They have all reported loving it. Thanks for your dedication to the profession. You make so much available to so many."
    - Charles Ruffner, Southern Illinois University

  98. "I surfed in from a link from a geology page at University of Wisconsin - Stout and like your page."
    - Chris Murray, Cedar Crest, New Mexico

  99. "I have been at your tree-ring pages, and found them extremely interesting. No doubt you have put a lot of effort into it... Thank you very much, and congratulations for your page."
    - Daniel Lluch-Belda, Mexico

  100. "Greetings. I have been searching for information with pictures about trees, many aspects. That is how I came to be here. My cub scouts are working on the Naturalist and Forester activity badges."
    - Paula McMillian, Macon, Georgia
slide up button
Google Search Helps Support These Web Pages!