Which of the following is not true of tropical evergreen...

Key Concepts

Tropical Evergreen Forest Ecosystems

These ecosystems are known for their dense canopies, high biodiversity, and complex forest structure, which supports a wide array of plant and animal species. Their buildup of biomass and intricate community interactions make them a central study subject in ecology.

Biological Energy Flow and Productivity

This concept deals with the movement of energy through an ecosystem, starting from primary producers that capture sunlight via photosynthesis. In tropical evergreen forests, high rates of photosynthesis and rapid biomass turnover result in significant energy flow, although this productivity is achieved through efficient nutrient recycling rather than abundant soil nutrients.

Pollination Mechanisms

Pollination in tropical ecosystems often relies on animals such as insects, birds, and bats. This animal-aided pollination promotes genetic diversity and complex plant-pollinator relationships essential for maintaining the forest’s high species diversity.

Seed and Fruit Dispersal

Many plant species in tropical forests have evolved fruits and seeds that are dispersed by animals, which facilitates the wide distribution and regeneration of these species. This mutualistic relationship between plants and animals is crucial for sustaining the vast biodiversity of these environments.

Nutrient Cycling and Soil Fertility

Despite the high productivity of tropical evergreen forests, they usually develop on nutrient-poor soils. The high productivity is maintained by rapid nutrient cycling and recycling, rather than a rich supply of soil nutrients, highlighting the efficient ecological processes that characterize these systems.

Transcript

00:01 Today we're going to be answering this question in regards to a chapter on biogeography.

00:06 So for this question it reads which of the fall land is not true about tropical ever rainforests? that they have large number of species of trees or most plant species are are animal pollinated or most plant species have animal dispersed fruits are biological energy flow is very high or high productivity depends on the rich supply of soil nutrients you can pause the video and pick which was the correct answer and we'll go over this shortly okay so what let's talk about that about tropical evergreen forests well they are found in the equilateral regions where total rainfall exceeds 250 centimeters annually and the dry season lasts no longer than two or three months.

01:15 They are the riches of all biomes and number of species of both plants and animals with up to 500 species of both plants and animals with up to 500 species of plants.

01:34 Per kilogram, i mean, kilometers per square.

01:43 And along with their immense species reaches, tropical evergreen forests have the highest overall productivity of all ecological communities however most mineral nutrients are tied up in the vegetation the soil usually cannot support agriculture without massive applications of fertilizer on the slope of the tropical mountains trees are shorter than low -lam tropical trees their leaves are smaller and there are more epiphytes basically plants that grow on other plants derive their nutrients and moisture from the air and water than the soil so based off the dad what did we get from it well they do have high productivity depending on the rich supply of the soil like the biological energy flow is high.

03:02 They brought up, oh, sorry.

03:08 What else that they brought up? they did brought up about, they do have a large number of species of trees.

03:17 They did bring up that.

03:18 But let's look at these two, where most plant species are animal pollinated, or most plant species are animal fruit dispersed.

03:33 Because we're trying to determine which one is not true.

03:41 And looking at it, we do see a lot of plants that would be...

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