Waterplants in the Tropical Wetlands Chavalit Vidthayanon WWF - PowerPoint PPT Presentation

Waterplants in the Tropical Wetlands Chavalit Vidthayanon WWF Thailand • Introduction • Major vegetation in wetlands • Zonations • Diversity of waterplants • Economic and ecological value

Introduction

Waterplant hotspots in SEA. Kwan Payao Chantaburi Boung Khonglong Bueng Borapet Khaoyai NP Petchaburi Samroiyad NP. Ranong Thale Noi NHA Koh Libong NHA Tohdaeng Peat WS

Type of waterplants • Submerged • Emerged • Floating • Marginal • Flood dependent • Flood tolerance

Tropical Wetland Vegetation Types • Streams and riparian forests • Flooded forests • Floodplains and marshlands • Peatlands • Sandy Beach forests • Mangroves • Seagrass beds

Habitat and Landscape Diversity Lowland Dry forest Floating mats vegetation Marshlands Streams

Dry Dipterocarps Lowland evergreen

Shrub wetland Deep and shallow marsh Upland buffer Forested wetland Wet meadow Open water General Zonation

General zonation Riparian forests Marginal zones Submerged-emerged zones

Kut Ting Vegetation zones in marshland

Kut Ting Vegetation profiles in different area Bueng Kong Long

Streams and riparian forests

Riparian waterplants

Mekong Riparian forests

Flooded forests

Flooded forest trees By SEARIN

Floodplains and marshlands

Marshy grasslands

Floating and emerged plants

emerged plants Floating and

Submerged plants

Submerged plants

Marginal plants

Mangroves Mangrove zonation

Root adaptation diversity

seagrass Seedling zonation Phenology of water plants mangrove

Mangroves and peat forests Intermediet type of habitats

• Peat swamp forests

• Sandy Beach forests The most threatened wetland habitat in tropical areas

Beach forest flora

• Seagrass beds

Identification parts of Seagrasses

Up to 60 species globally Seagrass flora 20 spp. in S/SEA.

Threats to water plant diversity • Deforestation • Wetland claim and alteration • Invasive alien species; plants and animal • Pollution • Climate change and drought • Overexploitation • Overfishing and grazing

Invasive Alien Water plants

• Economic and ecological value

Important of aquatic plants ความสําคัญ • Food อาหาร : • Fodder อาหารสัตว • Ornamental and aquarium plants พรรณไมน้ําสวยงาม • Fertilizer ปุย • Fish habitats ถิ่นอาศัยสัตวน้ํา • Pharmaceutical uses สมุนไพร • Accessories, handicraft, household uses • Timbers

Economic waterplants

Edible waterplants > 50 species

Exported > 300m ฿ annually Aquarium water plants

Water plant communities as fishes and wildlife habitats

Waterplant Monitoring methods • Direct sampling • Visual census • Participatory survey and local knowledge • Photo records • Plot sampling and mapping

Tools and database • Herbarium • Botanical garden • Field guide • Water plant aquarium

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