AY Honors/Bogs & Fens/Answer Key

1. What is a bog? How is it unique?

A bog is a wetland formed in cold climates from water obtained only from the atmosphere (rain and snow). There are no other sources of water such as springs, rivers or streams. Because of this bogs are low in mineral nutrients (nutrients are usually washed into a body of water by rivers and streams). A mat of specialized vegetation grows out over the water. As leaves and plants die and fall in the water, decomposition is very slow, which causes the accumulation of organic matter at the bottom called “peat.” Because of this, the water in a bog is acidic and low in oxygen. Methane gas is a by-product of decomposition and can be seen sometimes bubbling up. Species diversity is low due to the harsh environment. They are important for “storing” carbon.

2. Where are bogs found?

Bogs occur mostly in cold, heavily forested regions of the northern hemisphere north of the 45th parallel. This region is also called the Boreal Zone.

3. Name 6 things that are needed for bog formation.

1. A basin with no drainage.
2. Rain and Snow are the only sources of water.
3. Cool to cold climates.
4. More precipitation than evaporation, saturated conditions.
5. Reduced rate of decomposition resulting in peat formation
6. Specific and amazing plant adaptations

4. Name and describe three different types of true bogs.

Blanket bog

Blanket Bog or Blanket Mire

This type of bog has extensive peat cover not just covering basin filled with water, but these ‘blankets’ extend past the basin boundaries and cover the ground over large areas including hilltops, slopes and plateaus. Two hundred days of rainfall a year are needed to form these bogs.

Quaking bog

Quaking bog

This type of bog has floating mats of vegetation including, mosses, shrubs and trees . The whole mat shakes when stepped on. Larger movements may cause trees to sway.

Raised bog

Raised Bog

A type of bog in which peat deposits grow above the water level forming domes or ‘raised’ mounds. These mounds may be surrounded by water forming islands. These are sometimes referred to as a Pocosin in the east.

5. What is the difference between a bog and fen? What is succession and how do bogs and fens illustrate this process?

Bogs and Fens are both sources of peat and have a floating mat of vegetation. The major difference has to do with the water source. Bogs are closed systems that have no connection to groundwater sources, Fens are open systems that depend on a groundwater source (springs). Fens are less acidic, have more nutrients and support a more diverse community of plants and animals. For a fen, the mat of vegetation is composed of herbs and grasses such as Tussock Grass.

Succession is where one community naturally changes over time eventually being replaced by a different community. Fens and bogs are often found close together and over time, most fens become bogs. Peat builds up and separates the fen from its groundwater supply causing a closed system to form; nutrient levels drop, acidity increases and a bog is formed. Succession of bogs leads to the formation of conifer forests.

6. What are some adaptations of bog plants?

• Exposed leaves are covered in waxy material, have thick woolly hair-like fibers, or hide their pores in deep pits on the underside to conserve nutrients and to reduce toxins such as iron and manganese.
• Grow low to the ground or have slow stunted growth.
• Survive dramatic temperature differences.
• Live in acid conditions with low nutrients.

7. What is Sphagnum Moss and how is it vital to bogs?

Sphagnum flexuosum

Sphagnum Moss or Peat Moss (Family Sphagnaceae) is a plant that shapes and drives bog chemistry. It has gas-filled cells that help it to float and has amazing absorption properties enabling it to hold many times its own weight in water. It grows from the top and dies just a small distance down the stem. It slowly grows out from shore eventually forming a floating mat of vegetation over any open water resulting in the sun not being able to warm the water below. When new moss forms, the old moss is pushed underwater and decays very slowly into peat. As it slowly decays, tannin and acids are released killing bacteria and removing dissolved oxygen that would otherwise cause decomposition to occur, also turning the water brown. Dead peat moss accumulates until it is many feet deep and eventually, given enough time, will reach ground level below and fill the bog completely.. Sphagnum Moss supports a variety of acid loving plants, shrubs and even trees to grow on top of its floating mass over deep water, also called bog forest. When stepped on, the mats shake, tilt and ripple causing even trees to sway. Falling into a bog can be dangerous so it is best to stay on designated boardwalks and trails.

8. What are carnivorous plants and what makes them bog specific? Name and describe at least two of them.

Carnivorous plants trap animal prey (insects) to make up for the loss of nutrients they cannot obtain from the environment. The traps are modified leaves and may be “active” or “passive” depending on how they catch their prey.

Pitcher Plant (Passive)

Pitcher Plant at Mississippi Sandhill Crane National Wildlife Refuge

These plants form a slippery, colorful cupped leaf, and have a nectar-covered lip to lure insects. When an insect slips and falls in, it is trapped by downward pointing, sharp hairs. It is slowly dissolved in the liquid in the bottom of the cup. There are some insects that thrive in the pitcher plants by having an anti-enzyme that prevents them from being digested by the plant.

Sundew (Active)

Sundew

Sticky hairs in their leaves attract and hold the insect, and then more sticky hairs fold over it until the insect is trapped and is digested.

Bladderwort (Active)

Common Bladderwort

A group of aquatic flowering plants that grow with no roots. They obtain their nutrition from the water or prey captured in small “bladders”. There are trigger hairs that, when touched, open a trap door and the prey is sucked in when the water rushes in to fill the “bladder” and the door shuts trapping the prey.

9. Name and describe five other plants or trees, which are found in bogs.

Adventist Youth Honors Answer Book/Species Account/Larix laricina

Adventist Youth Honors Answer Book/Species Account/Vaccinium macrocarpon

Chamaedaphne calyculata

Leatherleaf (Chamaedaphne calyculata)

Description: A flowering shrub that keeps its old leaves until the new leaves are well grown. The stomata or breathing pores are sparse and deep in pits. The leaves feel leathery and are brown underneath.

Adventist Youth Honors Answer Book/Species Account/Cypripedium acaule

Adventist Youth Honors Answer Book/Species Account/Picea mariana

Adventist Youth Honors Answer Book/Species Account/Rhododendron groenlandicum

10. Name and describe 5 animals that can be found in bogs and fens.

Adventist Youth Honors Answer Book/Species Account/Grus Canadensis

Adventist Youth Honors Answer Book/Species Account/Lithobates sylvaticus

Adventist Youth Honors Answer Book/Species Account/Picoides arcticus

Adventist Youth Honors Answer Book/Species Account/Alces alces

Adventist Youth Honors Answer Book/Species Account/Lycaena epixanthe

Adventist Youth Honors Answer Book/Species Account/Synaptomys spp

Adventist Youth Honors Answer Book/Species Account/Castor canadensis

11. Tell a story about bogs and draw a spiritual lesson.

This is one example. You can develop your own story.

“And do not be conformed to this world, but be transformed by the renewing of your mind, that you may prove what is that good and acceptable and perfect will of God.”   Romans 12:2  Pitcher plants (Family Sarraceniaceae) are carnivorous plants, meaning they have unique ways of catching insect prey and digesting them to obtain nutrients otherwise not available in their environment.  The plant has large "pitcher" shaped leaves that catch rain water.  The "lip" of the leaf is pretty colored, fragrant and slippery.  Insects are attracted to this, fall in and are trapped, unable to escape due to sharp, down pointing hairs causing the insect to drown.  The plant then digests its catch.  This family of plants (nine species here in North America) often inhabit peatlands, bogs, pine barrens and other such habitats that are hostile to most other types of plants.  In one species, the leaves can grow to be almost 3 feet tall!  Strangely enough, some insects and other small creatures survive and even thrive inside the pitcher plant.  They may spend some time there and move on or in some cases, make a permanent home.  There is a type of mosquito larvae (Pitcher Plant Mosquito – Wyeomyia smithii ) that lives in the very fluid that consumes other types of insects.  This mosquito living in the pitcher plants have special anti-enzymes that prevent them from being digested.  The Bible is like these anti-enzymes; we must have God's word as part of our whole being, our lifestyle and full commitment.  We live in a crazy, scary world yet we are not part of this world.  We are only passing through.  We are not to be consumed by the things and desires this world has to offer for they result in death, just like insects that fall into the pitcher plant and are digested because they do not have the anti-enzyme. God's word must be written in our hearts and minds.  May we encourage each other to become filled with these spiritual "anti-enzymes".  (Beckermeyer) (Johnson & Worley, 1985)

12. Do at least 2 of the following activities:

Visit a zoo where there are wetland animals. If possible, observe some of the ones you studied while learning about bogs.

Adventist Youth Honors Answer Book/Zoo Visit

Watch a DVD or video about bogs or plants or animals that live in bogs.

Here is one possibility.

Here is another:

• Bog Restored in New Jersey Nature Preserve PBS, 2m:17s

Draw or paint a picture of something you had fun learning about while studying bogs.

You can either create your picture during your visit to a bog or fen, or you can take a picture and work from that when you get back. See the Drawing and AY Honors/Arts and Crafts/Painting honors for tips on creating your artwork.

Talk to your group, or write about or make a short video about a real life bog conservation project. Explain why this specific habitat should be saved, i.e. endangered species of plants and/or animals living there.

See the Video honor for instruction on making your video, and be sure to check out the Environmental Conservation and Endangered Species honors while you're researching this option.

References

• Benyus, J. M. (1989). Northwoods Wildlife, A Watcher's Guide to Habitats. Minocqua, WI: Northwood Press.
• Brock, J. P., & Kauffman, K. (2003). Butterflies of North America. New York, New York: Hillstar Editions, L.C and Houghton Mifflin Company.
• Campbell, S., Hunt, A., Kerridge, R., Lynch, T., & Wohl, E. (2011). The Face of the Earth; Natural Landscapes, Science and Culture. Berkeley and Los Angeles, California: University of California Press.
• Eastman, J. (1995). The Book of Swamp and Bog. Mechanicsburg, Pennsylvannia: Stackpole Books.
• EcoRiskProfile. (n.d.). Retrieved from www.epa.gov: http://www.epa.gov/region1/ge/thesite/restofriver/reports/final_era/B%20-%20Focus%20Species%20Profiles/EcoRiskProfile_wood_frog.pdf
• Graham, L. E., Graham, J. M., & Wilcox, L. W. (2003). Plant Biology. In Plant Biology. Upper Saddle River, New Jersey: Pearson Education, Inc.
• Haslam, S. M. (2003). Understanding Wetlands. New York, New York: Taylor and Francis.
• Johnson, C. W., & Worley, I. A. (1985). Bogs Of The Northeast. Hanover, New Hampshire: University Press of New England.
• Larsen, J. A. (1982). Ecology of the Northern Lowland Bogs and Conifer Forests. New York, New York: Academic Press, Inc.
• Milne, L. J., & Milne, M. (1984). The Mystery of the Bog Forest. Toronto, Canada: McClelland and Stewart Limited.
• Mitsch, W. J., & Gosselink, J. G. (1993). Wetlands: Second Edition. New York, New York: Van Nostrand Reinhold, International Thomson Publishing.
• Moore, P. D. (2008). Wetlands. New York, New York: Facts on File, Inc.
• Niering, W. A. (1989). The Audubo Society Nature Guides, Wetlands. New York: Alfred A. Knopf, Inc. and Random House, Inc.
• Root, P., & Bowen, B. (2010). Big Belching Bog. Minneapolis, Minnesota: University of Minnesota Press.