Biogeography
The study of plants, animals, and other living things in terms of their geographic distribution is referred to as biogeography. Biogeography is usually examined in coexistence with ecological and historical variables that have affected organisms' spatial distribution across time. It is not only based on the habitation patterns; it is also about the reasons that cause differences in distribution. Biogeographic studies divide the Earth's surface into diverse flora and fauna compositions, notably the continents and islands. Biogeography is a field of science, but physical geographers have made vital commitments, especially in flora. Biogeography is a multidisciplinary field of study that combines concepts and data from ecology, evolutionary biology, taxonomy, geology, physical geography, paleontology, and climatology.
Types of Climate
The weather pattern in a long-term process in a locality, region, or even over the entire globe is known as climate. Generally, it is decided by calculating an average of thirty years' weather in a region. In that sense, the weather and climate are different.
Biome
It is defined as a definite community of animals and plants residing together in a climate. Each (plants and animals) having a characteristic appearance and distributed over a wide geographical area defined largely by regional climatic conditions.
Extinction of Animals Species on Earth-- The extinction of any species is an irreversible loss of part of the biological richness of the earth or also can be defined as loss of species or other taxonomic unit eg. subspecies , genus , family etc. ,when there are no surviving individuals elsewhere on the globe or earth .
A extinction of any animal or plant species can be natural occurrence caused by an unpredictable catastrophe, chronic environmental conditions or ecological interaction eg . competition , disease or predation .
Dramatic increase in extinction rate due to human ,( its nature , habitat and food habits ) since became dominant and largest animal causing environmental change .
Extinction of animal species in present global conditions -- According to scientists since the beginning of the life on Earth , an average of .01 - 2 out every million species have gone extinct every year .
Current studies suggest that at least 829 species have become globally extinct in past 300 years .
Due to human mismanagement and activities , extinction ratio is creeping up to 10 - 10,000 times higher .
Causes of the species extinction -- Human and its activity are biggest and dangerous cause for extinction of species .Passenger Pigeon ,Dodo , Baiji White Dolphin , Great Auk ,Mammoth, Stellers Sea Cow
There are Overexploitation , Habitual Disturbance , climate change , Habitat destruction ,also very important causes due to which extinction rate is growing dangerously .
Consequences of species extinction -- Species extinction at regional or global scales implies a general decline in biodiversity. Strong evidences give ,richness of species in an area enhances the ecosystem productivity and stability .There is marked bioaccumulation of toxins .
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
