Forestry Handout 2013

7/28/2019 Forestry Handout 2013

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GENERAL MORPHOLOGY:

Tree woody plant with an erect perennial trunk at least 3 inches in diameterand a total height of at least 13 feet at maturity with a definitely formed crown of foliage.

Shape overall tree shapes include pyramidal, conical, columnar, spreading, vase-shaped,broad, androunded.


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Leaves leaves can be needle-shaped, scale-shaped, or broad and flat.Broad leaves can be simple or compound and are arranged along the branch in an opposite,

alternate, or whorled pattern.Leaf shapes include linear (grasslike), lanceolate (lance-shaped), oblanceolate

(reverse lance-shaped), round, ovate (egg-shaped), obovate (reverse egg-shaped),oblong, elliptical (oval), and spatulate (spoon-shaped).The edges of leaves can be without teeth (entire) or toothed. The edges may also be wavy,

turned under, or deeply divided into parts or lobes.


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Leaf Types:


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Leaf Morphology


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Flowers flowers have sepals which are usually green and leaf-like, petals with are brightly colored,stamens (the male reproductive structures) and pistals (the female reproductivestructures.)

Most tree flowers are bisexual, but some are only one sex. The two sexes can appear onseparate trees or on different locations on the same tree.

Some flowers are born singly but more commonly they are clustered.


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Fruit the fruit may be a berry, drupe, pome, multiple fruit, aggregate fruit, acorn or othernut, key (samara), achene, pod, capsule or follicle.

Simple fruit can be dry or fleshy. If it develops from several pistals, it is an aggregate.


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ECOLOGICAL RELATIONSHIPS:

Major types of forests their specific habitats, soils, and climate conditions.Northern Forests spruces, firs, pines, tamarack, paper birch, quaking aspenPacific Coast Forest western hemlock, redwood, Douglas fir, western red cedarWestern Mountain Forests ponderosa pine, lodgepole pine, Engleman spruce, Douglas fir.Northeastern Deciduous Forests eastern hemlock, American beech, red oak, basswood,

sugar maple beech, maples

Central Forests tuliptree, sycamore, shagbark hickory, white oak, Ohio buckeyeSoutheastern Forest Loblolly pine, shortleaf pine, longleaf pine, mockernut hickory,

live oak.Subtropical Forest red mangrove, black mangrove, cabbage palmettoUnforested Areas desert, grassland, tundra


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Tree Ecology:

Growth requirements - trees belonging to the same group or family may have differentgrowth requirements as temperature, moisture, and soil types. Some grow in purestands but many grow in association with other species of trees.

Environmental impacts of trees their role in the stability of their ecosystems.Things they provide and problems created by misuse and natural factors as forest fires.

Interspecies relationships relationship with other trees and plants and the animalswithin their ecosystem. Some animals are very specific about the type of treethey require within their ecosystem.

Role within their ecosystems place within the food chains and food webs oftheir ecosystems.

Economic impact - lumbering, erosion prevention, oxygen production, wildlife habitats,food sources, shade.

Uses for the various parts of a tree wood types and uses, bark, leaves, fruits, seeds,roots,

Mode of dispersal of their seeds cones vs. flowers, fleshy fruits, wind, water, animaltransport.

Benefit of Trees to the Environment

Carry on Photosynthesis - use carbon dioxide, water

and sun energy to produce oxygen and carbohydrates to benefit all of us

Prevent erosion - roots help keep soil in place

Improve Air Quality absorb harmful pollutants through the pores of leaf surfaces as nitrogen dioxi

sulfur dioxide, ozone, and carbon monoxide (estimates conclude that 100 trees remove up to five tonsCO2, 400 pounds of ozone, and 300 pounds of small particulate matter)

Remove CO2, ozone, small particulate matter trapped and filtered by leaves and branches

Help with global warming remove greenhouse gases

Keep us cool Provide shade and by transpiration through leaves that releases moisture into the air

Trap rainwater - One hundred mature trees catch approximately 250,000 gallons of rainwater each y

Help keep water quality high trees clean water as it passes through their roots on its way into the

groundwater supply


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Challenges to Forest Populations:

Fragmented Forests small patches of woods dont provide enough food or protection from predato

and housing developments breakup forest habitats

Harvesting issues methods used to harvest trees from a forest affect help of tree populations

Exotic Species can cause serious damage because of their lack of natural enemies to keep their

populations in check

Atmospheric threats acid rain and airborne pollutants can weaken trees making them more

susceptible to insect infestation and disease and acid rain can interfere with absorption of soil nutrientsstunting tree growth

PREPARING FOR COMPETITION

Field Guide

Study the organization of the field guide

Note that the page numbers of the Audubon Field Guides are on the Official Tree List Tab the field guide with very small useful tabs so it is not cluttered and can be easily used

Notice how the Family characteristics come first and then the species arrangement is alphabetical

Practice using the Field Guide to identify specimens or photos

Practice under timed conditions to prepare for competition

Study Binder

The most effective resources are the ones produced by the students.

The process of producing the resources is a major learning tool.

Have a copy of the rules in your binder

Have a copy of the lists (birds, fossils if applicable) in your binder Prepare and organize materials by major topic divisions.

Place materials from many different sources into your topic divisions

Reduce the size of pictures where possible to get more information on a page.

Color code information to help you locate or emphasize key items.

Put pages in sheet protectors two per protector to save space.

Use tabs to separate sections.

Label tabs so items can be located with ease.

Power Point Slides - make power point slides for trees and use them so you can use them to study

Flash Cards make a set of flashcards with pictures on the front and information on the back

Actual Specimens collect and preserve actual specimens of leaves put data on the back soyou can use them for study. See the section following on collecting and preserving leaves

Timer prepare practice stations and use the timer to improve efficiency of your teamwork skills


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COLLECTING AND PRESERVING LEAVES

Collecting Leaves

1. Only collect leaves on a sunny day and after dew has dried.

2. Collect good leaves, leaves that have not been damaged by insects, diseases or the sun.

3. Always collect more than one leaf. Collect a small branch full. That way, you will be sure to get a goodrepresentative of the tree.

4. When removing specimens from the tree, it is best to use pruning shears so that you minimize your impact the tree.

5. If you are working with a compound leaf, try to get the whole leaf.

6. When removing a specimen from a tree that has opposite arrangement, try to remove two or four leaves wtheir position on the stem intact.

7. Press the leaves within an hour after collecting or before they dry out.

Pressing Leaves - it is important to remove as much moisture from the leaves as quickly as possible.

1. Do not fold the leaf.2. Place each leaf, or several leaves between 2 layers of absorbent paper as paper towel or

newspaper.3. Press the leaf or leaves between absorbent papers in a large book or leaf press.4. Place extra weight on the large book or tighten the leaf press strap to squeeze out the

moisture.5. Allow several days for pressing.

6. If time permits, change the paper towels on the leaves after the first couple days of pressing.

Mounting Leaves

1. Mount the leaves and place in sheet protector of a photo album or between acetate or cellophane sheets.Another option is to laminate the leaves.

2. Label the specimens with scientific name, common name, date of collection, name of collector, location, noabout identification put the information on the back so you can use the specimen for study like a flashcar

3. Arrange leaves by species within families.


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PREPARING COMPETITION RESOURCES

Learn the trees so resources will be used as little as possible. The most successful teams

use very limited resources in competition.

Use notes for material you want to use that is not in the Field Guide or on the Tree List

Check the event parameter so you know what is allowed in the competition.

Since the events are timed, organization of materials is essential for the mosteffectiveuse of the materials during the competition.

Organize materials on each page to maximize available space

Cut and paste items to organize materials more effectively on a page.

Write notes in margins or with pictures.

Color code information to help you locate or emphasize key items.

Use front and back of the page.

Place the page in a protective sleeve or laminate it so it wont get wet or damaged.

TIPS FOR COMPETION

Dried leaves may look different from live leaf or a photo of the leaf - its texture may change with dryin

Try to identify the specimen to the family and then decide what species it is

Use common sense when answering not identification questions

Be careful to spell Scientific names and common names correctly

Work as a team and use your teamwork skills to finish the requested tasks

Forestry Handout 2013

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