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Introductions to Statistics
Meta Indexes of Online Education
Virtual Field Trips
! Tree-Ring Research (Dendrochronology) in General@
! Wound Response in Trees@
! The Pros and Cons of Pre-Neogene Growth Rings@
! Trees@
! Introductions to both Fossil and Recent Plant Taxa@
! Plant Anatomy@
! Permineralized Plants and Petrified Forests@
! Fossil Charcoal@
Websites, showing Plant Fossils@

Teaching Documents about Wood Anatomy and Tree-Ring Research

! Harry Alden, Maryland Archaeological Conservation Lab: Wood & Charcoal Identification in Southern Maryland. Introductions to wood anatomy. Excellent! Please note especially the keys and description of soft- and hardwoods, including an array of microphotographs.

! Laureen Sally da Rosa Alves and Margot Guerra-Sommer (2007): Paleobotany and Paleoclimatology Part I: Growth Rings in Fossil Woods and Paleoclimates. PDF file; See also starting with PDF-page 16:
Part II: Leaf Assemblages (Taphonomy, Paleoclimatology and Paleogeography). In: Koutsoukos, Eduardo A.M. (ed.) Applied Stratigraphy. Series: Topics in Geobiology, Vol. 23.
See also here (in PDF) and there (Google books).

Volker Arnold, Museum of Prehistory in Dithmarschen at Heide, Germany: Which tree produced the Baltic amber resin? Cross, radial, and tangential surfaces in wood block. See also: Wood remains in Baltic and Bitterfeld amber.

Eleni Asouti, School of Archaeology, Classics and Egyptology, University of Liverpool: Charcoal Analysis Web. Go to:
Cecilia A. Western Wood Reference Collection Archive: The Wood Anatomy Notebooks. Descriptions (typewriter, in PDF) and images (jpg). Mainly species from Southwest Asia and Southeast Europe, donated to the Institute of Archaeology by Cecilia A. Western.

! Alice Bergfeld (the English editor), Rolf Bergmann, University of Hamburg, and Peter v. Sengbusch, University of Bielefeld and Institut für Allgemeine Botanik, University of Hamburg: BOTANY Online - The Internet Hypertextbook. Botany online is based on the textbook "Botanik" by Peter von Sengbusch (Mc Graw Hill Book Company, 1989). Still available via Internet Archive Wayback Machine.

Department of Plant and Microbial Biology, University of California, Berkeley: Plant Tissues, Wood, Growth Rings, Bark. Begin Photosynthesis. Lecture notes. Snapshot taken by the Internet Archive´s Wayback Machine.

Alan Bernau Jr., Alans Factory Outlet, Luray, Virginia: Wood Rings and The Age of Trees. A link directory to kid friendly articles on tree identification and the age of trees.

Botany On-line, Hamburg: The Xylem. Snapshot taken by the Internet Archive´s Wayback Machine.

! Center for Wood Anatomy Research, Forest Products Laboratory (FPL), Madison, Wisconsin (U.S. Department of Agriculture, USDA). Information about wood identification techniques, and several hundred technical sheets which give details of the properties of North American hardwoods and softwoods, tropical woods and lesser-known woods. You may navigate from here: Wood Properties.
Now recovered from the Internet Archive´s Wayback Machine.

! Michael Clayton, Department of Botany, University of Wisconsin, Madison: Instructional Technology (BotIT). Some image collections. Excellent! Go to:
Wood, and Secondary Growth

Michael W. Davidson, The Molecular Expressions: The Tree Collection. Photomicrographs of thin sections produced from the wood of more than 30 different trees. Images are accompanied by text describing characteristics and habitat of the individual trees.

Owen Kent Davis, Department of Geosciences, University of Arizona Tucson: QUATERNARY PALYNOLOGY AND PLANT MACROFOSSILS. Lecture notes. Go to: Macrofossil Drawings, WOOD CROSS SECTION. Line drawings.
These expired links are now available through the Internet Archive´s Wayback Machine.

Juergen Decker, Holztechnik - Holzbau, Bonn: Holzlexikon (in German).

! A.L. Decombeix et al. (2019): Plant hydraulic architecture through time: lessons and questions on the evolution of vascular systems. In PDF, IAWA Journal, 40: 387-420. See also here and there.

Institut für Botanik, Technische Universität Dresden: Pinus sylvestris, Pinaceae, Gymnospermae (in German). Bordered pits and cross-field pits.
Website outdated. The link is to a version archived by the Internet Archive´s Wayback Machine.

! Olafur Eggertsson, LABORATORY FOR WOOD ANATOMY AND DENDROCHRONOLOGY, Department of Quaternary Geology, Lund University: What is Dendrochronology?

EMuseum, Minnesota State University, Mankato: Dating Techniques. Go to: Absolute Dating Techniques, Dendrochronology.
Snapshots provided by the Internet Archive´s Wayback Machine.

! European Commission: European Atlas of Forest Tree Species. Scientists and forestry professionals have contributed in the many stages of the production of this atlas, through the collection of ground data on the location of tree species, elaboration of the distribution and suitability maps, production of the photographic material and compilation of the different chapters. Excellent!
! Don´t miss the Atlas Download Page. Plenty of downloadable PDFs, e.g. about Past forests of Europe, an ecological overview, about forest classifications and European forest tree species.

Exploring Earth (McDougal Littell). The investigations and visualizations on this site were designed to accompany Earth Science, a high school textbook. The Web site was developed by TERC, a non-profit educational research and development firm in collaboration with McDougal Littell. Funding was provided by the National Science Foundation. Go to: Find out more about dendrochronology.

Howard J. Falcon-Lang (2005): Global climate analysis of growth rings in woods, and its implications for deep-time paleoclimate studies. Abstract, Paleobiology: Vol. 31, No. 3, pp. 434444.
See also here.

Linda Finnegan, An overview of dendrochronology.
Now recovered from the Internet Archive´s Wayback Machine.

! Henri D. Grissino-Mayer, Laboratory of Tree-Ring Science, University of Tennessee, Knoxville: Lectures in Dendrochronology.
Snapshot provided by the Internet Archive´s Wayback Machine.

! Henri D. Grissino-Mayer, Department of Physics, Astronomy & Geosciences, Valdosta State University, THE TREE-RING WEB PAGES: PRINCIPLES OF DENDROCHRONOLOGY. Basic definitions and major principles used in tree-ring research. See also: PHOTO GALLERY OF TREES AND TREE RINGS (Questions and answers).

Andreas G. Heiss, University of Natural Resources and Applied Life Sciences, Vienna; also: Archaeobotany, Vienna Institute for Archaeological Science (VIAS): Anatomy of European and North American woods - an interactive identification key. A freeware DELTA-based interactive identification key for soft- and hardwoods. Macroscopic and microscopic features. The key is currently available in English and German (ZIP files).

The InsideWood Working Group (wood anatomists and North Carolina State University Libraries professionals):
! The InsideWood Database. This project integrates wood anatomical information from the literature and original observations into an internet-accessible database useful for research and teaching. Currently 8,735 descriptions and 45,225 images, including 1,807 fossil wood descriptions and 2,910 fossil wood images. Superbly done and very helpful! Also worth checking out:
! Wood Anatomy Links, Wood Collection Catalogs.

Paul James, Microscopy UK: Tree Rings. A cursory look at these well known features.

T.H. Jefferson (1987): The preservation of conifer wood: examples from the Lower Cretaceous of Antarctica. In PDF, Palaeontology, 30. With instructive line drawings.

Michael Knee, Department of Horticulture and Crop Science, Ohio State University, Columbus: General Plant Biology Online Resources. Lecture notes. Go to: Woody plants.

Jona Lendering, Dendrochronology.

Frederic Lens and Steven Jansen, Laboratory of Plant Systematics, Katholieke Universiteit Leuven: Links to web sites related to wood anatomy, including wood collections, general information, course materials, and plant taxonomy.

! Lori Martinez, Rex Adams and Henri D. Grissino-Mayer: Guide to Dendrochronology for Educators. A tutorial and non-technical review of tree-ring dating.

Mark McCaffrey, NOAA: Paleoclimatology Slide Sets. A comprehensive online set of attractive slides, providing background on a variety of paleoclimatology subjects, including Ice Ages, Tree Rings, Ice Cores, Coral Reefs and much more. Go to: Tree Rings.
Websites outdated, download versions archived by the Internet Archive´s Wayback Machine.

Leonard Miller, The Bristlecone site: Dendrochronology. Dating through tree-ring growth.

Nicon Microscopy: Confocal Microscopy Image Gallery, Bordered Pits, and Digital Eclipse Image Gallery, Bordered Pits. Provided by the Internet Archive´s Wayback Machine.

Sandra Niemirowska, Poland: Petrified wood. Don´t miss the tutorial:
! "Palaeobotanical Laboratory".

! National Oceanic and Atmospheric Administration (NOAA), Washington, DC. NOAA Paleoclimatology. NOAA Paleoclimatology operate the World Data Center for Paleoclimatology which distributes data contributed by scientists around the world. Paleo data come from natural sources such as tree rings, ice cores, corals, and ocean and lake sediments, and extend the archive of climate back hundreds to millions of years. Go to:
Tree Ring. The Data Bank includes raw ring width or wood density measurements, and site chronologies (growth indices for a site).

NOAA Paleoclimatology Program, National Geophysical Data Center, National Oceanic and Atmospheric Administration (NOAA), Boulder, Colorado. Paleoclimatology Slide Sets. Go to: Tree Rings: Ancient Chronicles of Environmental Change.

Marc Philippe and Marion K. Bamford (2008): A key to morphogenera used for Mesozoic conifer-like woods. PDF file, Review of Palaeobotany and Palynology, 148: 184-207. study tools:
! Search for Wood Anatomy.
! Search for Tree Rings.

! L. Ragnia and T. Greb (2018): Secondary growth as a determinant of plant shape and form. Open access, Seminars in Cell & Developmental Biology, 79: 58-67.

! Schoch, W., Heller, I., Schweingruber, F.H., Kienast, F., 2004 (Eidgenössische Forschungsanstalt WSL, Birmensdorf, Switzerland: Wood anatomy of central European species. This web-based identification key is a completely revised version with more and new micro photographs and new anatomic items of the book by Schweingruber et al., 1990: Microscopic Wood Anatomy; Structural variability of stems and twigs in recent and subfossil woods from Central Europe. 3rd edition 1990.
Identify your species with online high resolution cross- and length sections from trunks and twigs. Excellent!

! F.H. Schweingruber and A. Börner (2018):
The Plant Stem
A Microscopic Aspect
. Springer Nature Switzerland AG. Open access! Excellent!

! Fritz Schweingruber and W. Landolt, Swiss Federal Institute for Forest, Snow and Landscape Research (an Institute of the ETH Board): Xylem Database. The Xylem database provides an anatomical description and classification of the xylem and phloem of herbs, shrubs and trees.

! Fritz Schweingruber and W. Landolt, Swiss Federal Institute for Forest, Snow and Landscape Research (an Institute of the ETH Board): Dendrochronological Picture Database. 1400 slides cover most topics relevant to dendrochronology. Shown are general and species specific macroscopic and microscopic reactions to climate, extreme events and decomposition from all over the world.

Paul R. Sheppard, Laboratory of Tree-Ring Research, The University of Arizona, Tucson: Crossdating Tree Rings Using Skeleton Plotting. Information about dendrochronological crossdating using skeleton plots.

Thomas Siccama and Daniel Vogt, Yale School for Forestry and Environmental Studies: Methods of Ecosystem Analysis, Saltonstall Ridge, East Haven, Ct., Tree Rings Introduction.

Nancy E. Spaulding & Samuel N. Namowitz (McDougal Littell): Exploring Earth. The investigations and visualizations on this site were designed to accompany Earth Science, a high school textbook. The Web site was developed by TERC, a non-profit educational research and development firm in collaboration with McDougal Littell. Funding was provided by the National Science Foundation. Go to: How do Trees Record Time?

James H. Speer (2010): Fundamentals of Tree Ring Research. Book announcemen. Click "Read Excerpt":
! (Chapter "Introduction").

Hans Steur, Ellecom, The Netherlands: Hans´ Paleobotany Pages. Fossil plant images from the oldest land plants. Go to: Fossil gymnosperm wood.

Ed Strauss: Petrified Wood From Western Washington. How to identify petrified wood and reference resources for information on petrified wood. Read about the the monetary value of petrified wood. Snapshot taken by the Internet Archive´s Wayback Machine. Go to: Table of Genera. Microscopic images of Acer momijiyamense, Alnus latissima, Carpinus absarokensis, Cercidiphyllum, Cornoxylon, Diospyroxylon, Fagoxylon, Quercinium lamarense, Licquidambaroxylon weylandi, Carya tertiara, Pterocarya rhoifilia, Laurinoxylon, Robinioxylon, Magnolia, Lirodendroxylon.

! Ed Strauss, Washington (article hosted by Evolving Earth Foundation Issaquah, WA). The Evolving Earth Foundation is committed to encouraging research and building community related to the earth sciences. How to Identify Fossil (Petrified) Wood. See also: How to Identify Conifers. Conifer micro photographs.

! Laboratory of Tree-Ring Research, University of Arizona, Tucson: About Tree Rings. Tree-Ring Basics.

Forest Products Laboratory, Madison, WI, U.S. Department of Agriculture: Wood handbook: wood as an engineering material. About the characteristics and availability of commercially important woods, the structure, physical properties and moisture relations of wood, the mechanical properties of wood, etc. Available in PDF.

Wayne's Word An Online Textbook Of Natural History (Wayne P. Armstrong, alias Mr. Wolffia, Palomar College):
The Anatomy Of Wood. Easy to understand website, general macroscopic and microscopic features.
Stem & Root Anatomy. Cellular structure of vascular plants.
Tree-Ring Dating.

! Elisabeth A. Wheeler, Department of Wood and Paper Science, North Carolina State University: Wood Anatomy and Properties, Lecture Syllabus: Fall 2000. PDF files.

! Elisabeth A. Wheeler, Department of Wood and Paper Science, North Carolina State University: Wood Anatomy and Properties. The first part of the course discusses the macroscopic features common to all native woods, tree growth, and wood formation. Next is a study of softwood and hardwood anatomy that emphasizes the relationship between structure, function, and material characteristics. Discussion of cell wall properties precedes an introduction to some of wood´s physical and mechanical properties.

! A.C. Wiedenhoeft and R.B. Miller (2005): Structure and function of wood. In PDF, Handbook of wood chemistry and wood composites, Boca Raton, Fla. (CRC Press), pages 9-33.
An extended description of the microscopic structure of soft- and hardwoods, e.g. tracheids, rays, vessels, pits, growth rings, etc. See also here. (abstract).

Wikipedia, the free encyclopedia: Dendrochronology,
List of woods,

! Laurence D. Zuckerman, Omar Alvarado, and Michael W. Davidson, The Florida State University (website hosted by Molecular Expressions, National High Magnetic Field Laboratory): The Tree Collection. Provided by the Internet Archive´s Wayback Machine. Cross, radial, and tangential sections of about 50 common US woods, including the Glossary of Terms.

Labor für Dendrochronologie, Zürich, Switzerland: Dendro Prinzip. In German.

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Last updated September 09, 2019

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