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Thursday 9 February 2017

Chart 443 - Types of Forest 3

Types of Forest 3 Chart
Types of Forest 3 Chart

Spectrum Chart - 443 : Types of Forest 3

1. Tropical Rainforest - Tropical rainforests occur in areas of tropical rainforest climate in which there is no dry season all months have an average precipitation value of at least 60 mm. Tropical rainforests exhibit high levels of biodiversity. Around 40% to 75% of all biotic species are indigenous to the rainforests. Rainforests are home to half of all the living animal and plant species on the planet. Two-thirds of all flowering plants can be found in rainforests.

2. Tropical and Subtropical Dry Broadleaf Forest – The tropical and subtropical dry broadleaf forest biome is located at tropical and subtropical latitudes. Though these forests occur in climates that are warm year-round, and may receive several hundred centimetres of rain per year, they have long dry seasons which last several months and vary with geographic location. These seasonal droughts have great impact on all living things in the forest.

3. Temperate Needleleaf Forest - Temperate needleleaf forests mostly occupy the higher latitude regions of the northern hemisphere, as well as high altitude zones and some warm temperate areas, especially on nutrient-poor or otherwise unfavourable soils. These forests are composed entirely or nearly so of coniferous species. Needleleaf forests grow mainly in regions that have long, cold winters.

4. Subtropical Cloud Forest – Subtropical Cloud Forest receives as much as 40% of their precipitation from moisture that condenses on the leaves of trees from mist and clouds that move through these upland forests. Subtropical cloud forests occur on high mountains in the tropics most commonly between 3,000 and 4,000 feet elevation.

5. Tropical Moist Deciduous Forest - Tropical moist deciduous forests covers an area receiving sufficiently high rainfall (100 to 200 cm) spread over most parts of the year. The dry periods are of short duration. Many plants of such forests show leaf-fall in hot summer.

6. Tropical & Subtropical Deciduous Forest - Tropical & subtropical deciduous forest thrive where the rainfall is between 70 cm to 200 cm. The trees in these forest shed their leaves for about six to eight weeks in summer.

7. Temperate Deciduous Forest - Temperate deciduous forests are dominated by trees that lose their leaves each year. They are found in areas with warm, moist summers and mild winters. Many species that are typical of these forests time their growth and flowering to the short period just before the canopy opens hence they are known as spring ephemerals. Many migratory birds time their arrival to coincide with the opening of the canopy, which provides the insects that are their principal food sources for raising young.

8. Subtropical Coniferous Forest - Subtropical coniferous forests are characterised by diverse species of conifers, whose needles are adapted to deal with the variable climatic conditions. These biomes feature a thick, closed canopy which blocks light to the floor and allows little underbrush. As a result, the ground is often covered with fungi and ferns. Shrubs and small trees compose a diverse understory. Mexico harbours the world's richest and most complex subtropical coniferous forests.

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