EVOLUTION AND BIODIVERSITY Flashcards
simply refers to all varieties of life forms(flora & fauna) on Earth.
is the degree of variation of life forms within a given species, ecosystem, biome, or an entire planet. Biodiversity is a measure of the health of ecosystems.
BIODIVERSITY
MAJOR COMPONENTS OF BIODIVERSITY
SPECIES DIVERSITY AND ECOLOGICAL DIVERSITY
the number and abundance of species present in different communities.
SPECIES DIVERSITY
includes the variation in both terrestrial and aquatic ecosystems.
ECOLOGICAL DIVERSITY
These are those ways by which we can directly use biodiversity for our benefit.
DIRECT VALUES
These are those ways by which we don’t physically use a plant or animal, but by virtue of its existence it provides services that keep the ecosystem healthy.
INDIRECT VALUES
TWO DIRECT VALUE
CONSUMPTIVE VALUE
PRODUCTIVE VALUE
Biodiversity is an essential requirement for the maintenance of global food supply. The main sources of human food include animals, fish and plant produces.
CONSUMPTIVE VALUE
Some of the organisms are commercially usable where the product is marketed and sold. The animal products like tusks of elephants; musk from deer; silk from silkworm; wool from sheep or goats; fur of many animals etc all of which are traded in the market.
PRODUCTIVE VALUE
These are the values associated with the social life, religion and spiritual aspects of the people. The leaves, fruits, flowers of some of the plants are used in worship. Many animals like cow, snake, bull, peacock also have significant place in spiritual and thus hold special importance. Thus, biodiversity has distinct social value, attached with different societies.
SOCIAL VALUE
The ethical value means that human beings may or may not use a certain species but knowing the very fact that this species exists in nature gives pleasure.
ETHICAL VALUE
HIPPO means and prepare the acronym by
EDWARD O. WILSON
HABITAT DESTRUCTION
INVASIVE SPECIES
POLLUTION
POPULATION GROWTH
OVER-HARVESTING
