A Bog

Anni Julge, Mari-Liis Rand, Kätlin Otto

2012

About bogs

• Around 7000 bogs in Estonia• Up to 10 000 years old• Peat layer mostly 3 – 6 m. thick

• Bog walking• Exotic bog – shoeing hikes all year round

Development of a bog

• Swamp– Less water– More water on a

surface

• Transitional marsh– Terrestrialization

• Inosculation of a water body

– Paludification• Ground over

saturated

• Bog– Final stage– Huge water supplies– Water can be hidden

underground

Pihla bog

• Biggest bog in Hiiumaa– About 3050 ha

• Almost unhabited– Rare plants– Different animals

• Beginnings of important watercourses

• Thickest peat layer in Hiiumaa– About 4 m

• Peat is also quarried

Water analysis of Pihla bog

• pH 6– EU minimum value of swimming – pool water

• Ammonium level 0,05 mg/l– Recommended level– EU drinking water– Swimming – pool water– Fish – bowl water

• Phosphates level 0 mg/l

Water analysis of Pihla bog• Nitrites level 0,02 mg/l

–EU/USA drinking water–Fish – bowl water–Mineralwater

• Nitrate level 10 mg/l–Maximum level of food making water–EU/USA drinking water–Fish – bowl water–Mineral water

Thank you for your attention!