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Nicaraguan Caribbean tropical forest


page 11
   
   
   

Tropical Caribbean Nicaraguan Flora Nicaraguan Caribbean tropical forest, English

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Tropical Rainforests:

  • The tropical rainforest is earth's most complex biome in terms of both structure and species diversity. It occurs under optimal growing conditions: abundant precipitation and year round warmth. There is no annual rhythm to the forest; rather each species has evolved its own flowering and fruiting seasons. Sunlight is a major limiting factor. A variety of strategies have been successful in the struggle to reach light or to adapt to the low intensity of light beneath the canopy.

  • A vertical stratification of three layer of trees is apparent.. These layers have been identified as A, B, and C layers:

    A layer: the emergents. Widely spaced trees 100 to 120 feet tall and with umbrella-shaped canopies extend above the general canopy of the forest. Since they must contend with drying winds, they tend to have small leaves and some species are deci duous during the brief dry season.

    B layer: a closed canopy of 80 foot trees. Light is readily available at the top of this layer, but greatly reduced below it.

    C layer: a closed canopy of 60 foot trees. There is little air movement in this zone and consequently humidity is constantly high.

    Shrub/sapling layer: Less than 3 percent of the light intercepted at the top of the forest canopy passes to this layer. Arrested growth is characteristic of young trees capable of a rapid surge of growth when a gap in canopy above them opens.

    Ground layer: sparse plant growth. Less than 1 percent of the light that strikes the top of the forest penetrates to the forest floor. In such darkness few green plants grow. Moisture is also reduced by the canopy above: one third of the precipitation is intercepted before it reaches the ground.

  • Within the World Wildlife Fund's biome classification scheme, tropical r

     

    ain forests are considered a type of tropical wet forest (or tropical moist broadleaf forest) and may also be referred to as lowland equatorial evergreen rain forests.

  • The tropical rain forests are home to more species than all other biomes combined. The leafy tops of tall trees-extending from 50 to 80 meters above the forest floor-forms an understory. Organic matter that falls to the forest floor quickly decomposes, and the nutrients are recycled.

  • Rainforests are characterized by high rainfall. This often results in poor soils due to leaching of soluble nutrients. Oxisols, infertile, and deeply weathered, have developed on the ancient Gondwanan shields. Rapid bacterial decay prevents the accumulation of humus. The concentration of iron and aluminium oxides by the laterization process gives the oxisols a bright red color and sometimes produces mineral deposits (e.g. bauxite). On younger substrates, especially of volcanic origin, tropical soils may be quite fertile, as are the soils of many seasonally flooded forests, which are annually replenished with fertile silt.

  • Rainforests are home to two-thirds of all the living animal and plant species on the planet. It has been estimated that many hundreds of millions of new species of plants, insects, and microorganisms are still undiscovered and as yet unnamed by science. Tropical rain forests are also often called the "Earth's lungs", however there is no scientific basis for such a claim as tropical rain forests are known to be essentially oxygen neutral, with little or no net oxygen production.

  • Tall, broad-leaved evergreen trees are the dominant plants, forming a leafy canopy over the forest floor. Taller trees, called emergents, may rise above the canopy. The upper portion of the canopy often supports a rich flora of epiphytes, including orchids, bromeliads, mosses, and lichens, who live attached to the branches of trees. The undergrowth or understory in a rainforest is often restricted by the lack of sunlight at ground level, and generally consists of shade-tolerant shrubs, herbs, ferns, small trees, and large woody vines which climb into the trees to capture sunlight. The relatively sparse understory vegetation makes it possible for people and other animals to walk through the forest. In deciduous and semi-deciduous forests, or forests where the canopy is disturbed for some reason, the ground beneath is soon colonised by a dense tangled growth of vines, shrubs and small trees called jungle.

  • In the tropical rainforest primary colors are enhanced, in plants and animals, there is a wide variety of green colors as well as enhanced chroma on plants and flowers, animal feathers are bright and colorful as well as mammals. We can appreciate the same phenomenon on fruits, their luscious colors are bright and high in chroma and their sweetnes when ripe is enhanced too.

  • The temperature ranges from 5C to 50C. The average temperature is around 27 degrees celsius.

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    platain flower
       
    rose
       
    red flower
       
    red flower
       
    pink little flowers
       
    satin orange rose
       
    red flower
    maracas
     
       
       
       

    Nicaraguan Caribbean tropical forest, page 11 Copyright 1976-2013 Dr. Gloria Norris.  Click     to contact the artist for prices or information