Overwintering strategies of plants

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Overwintering strategies of plants

• Marko Kaskinen
• Riikka Linnakoski
• Marja Tuominen

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Introduction

• Plants have to cope with several environmental
  limitations
• darkness
• cold
• drought
• nutrients
• snow

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Different strategies

• Near the ground
• Inside the soil
• High above the ground
• As a seed
• The Raunkiaer System
• Based on the bulbs

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Plants near the ground

• Protection of snow
• Evergreen dwarf shcrubs and other evergreen
  plants
• Meaning of the buds and leaves
• Growing
• Different kinds of roots
• Chametophytes/ hemicryptophytes

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Plants inside the soil

• Rhizomes, bulbs and tubers
• Several advantages
• Day length
• Biannuals

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Inside the soil

• Corms and bulbils
• Energy source
• Potato
• Water plants
• Cryptophytes
• Hydrophytes
• Geophytes

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At high above the ground

• Phanerophytes
• Deciduous
• Coniferous trees (evergreens)
• Temperature
• Frost cleft

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Seeds

• Little water
• Annual
• Dormancy
• Germinating
• Therophytes

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Seeds advantages of winter

• Early blooming grasses
• Wind in spreading seeds
• No seed eaters

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Thanks for your attention!!!