If necessary, seek help from the 7th to 9th information board:
2019 – the reserve for bear protection, the beginning of the Tudu nature reserve 1995 – Construction of the Tudu hut
1937 – Jüri Parijõgi’s book “In the Forests of Alutagus” is published
1996 – The outflow (then Lord’s Ditch) was dug into Lake Tudu
2001 – a large clot that caused a lot of wind
1976 – The Järvesoo drainage ditches were closed
Mid-19th century – Juhan Lepasaar’s book “Sooradadel” was published
To practice bird counting, see the computer game on the website of the Estonian Ornithological Society (https://www.eoy.ee/loendaja/)
Mark the result of bird counting of each group member on the dotted line: …………………………….. ……… ………………………………………….. …………………
Calculate the average of the group: ………………………..
Words: All, but, are, mires, peatlands, mires, all, not, are, peatlands
……………………………………………………………………………………………………………………………………….
The photo has a cross-section of a pine tree. The radius of the tree is about 12 cm. Count the annual rings. How old is this tree? ……………………………………………
Examine the information board 5 and write the answer, which is the absolute height of the bottom of Lake Tudu ………….. m. Is this the lowest place on the map? NO / YES
Moving from point 4 to point 5, you will see an open area. Count the remnant trees in the open area to the left of the boardwalk. How many remnant trees do you see? …………..
Look and figure out what makes different the remnant trees to the left of the boardwalk from the trees to the right of the boardwalk? ……………………………………
………………………………………………………………………………………………………………………………………..
Fire destroys a lot. But for what reason can a forest fire be useful?
………………………………………………………………………………………………………………………………………..
Every year the tree grows its stem. We may see the growth of the tree by the annual rings. Count the annual rings of the tree. How old has this tree been? …………. What species of tree is it? …………………….
If the tree has been cut down in 2020, examine the annual rings in the cross-section of the tree. Assuming the tree has been sawn from the drained mire, use the annual rings to calculate the year in which the drainage work began: …………………………………………
Search Wikipedia for an event that took place in Estonia in the same year ………………………….
Take a seat on the benches and discuss the content of the following sentences. Then put the sentences in reasonable order by writing down the appropriate sequence number for each sentence!
Imagine you want to start restoring the mire. Think about what you need to do for that! With the following, some activities related to open-bog restoration can be found in the sentences.
…. When building dams, figure out how to get to and from the mire with your excavator. What are there alternatives to the excavator?
…. Find out and decide if it is necessary to remove the trees as it helps to raise water levels. Think about what to do with the chopped wood!
…. Find out how big the drainage area is.
…. Then start playing “with water” on your computer: click where it is wise to build dams that no more water would flow out of the drained mire.
…. Find out the old maps and communicate with the locals. How did the mire look like 50-100 years ago?
…. Use the hydrological modelling to see how the water moves in the mire.
…. Find out who the landowners are.
…. Explain to people who live in and near this bog – both, as endangered species and ad local people need attention! Whether and how the construction of dams and the water level may affect their life?
…. Talk to all landowners and try to get their approval.
a. Mire is a wetland where there is a constant ……………. or dead ……………. that is not completely decomposed.
b. Mires began to appear in Estonia after the last ice age, ie ……………… years ago.
c. Mire generally arises in ……………. way: either ………………………. ., from which the water has not been able to drain for any reason, or ………………………………………….. which has begun to clog.
d. When moving in the mire, you should step on the rotten of the ……………. in softer places, because they carry.
in the lake, 12000, peat, plant mass, two, cotton grass, depression of the soil
