This article explores the current status of biodiversity at global, national, and local levels, highlighting the number of species, conservation efforts, and the importance of sustainable practices in preserving biodiversity.
In the previous section on biodiversity, we discussed its components and values in daily life. Today, we will explore the current status of biodiversity at local, national, and global levels.
Globally, there are approximately 1.8 million scientifically documented species. However, scientists believe that the actual number of species on Earth could range from 1.5 to 2 billion, indicating that many species are yet to be discovered. It has been observed that biodiversity-rich nations are predominantly located in the southern hemisphere, primarily in developing countries. In contrast, the most significant exploitation of biodiversity has occurred in the northern hemisphere, which consists of developed countries.
This understanding has led to a consensus that biodiversity should be treated as a natural resource, necessitating proper documentation and sustainable usage. In Hindu mythology, there is a mention of 84 crore yonis, which signifies the vast diversity of life forms, including animals, plants, and microorganisms.
Currently, the world recognizes about 164,000 species, encompassing various categories such as Monera, Protista, Fungi, Plants, and Animals. The conservation and sustainable use of this God-gifted biodiversity must be addressed from local to global levels.
Several global agreements have been established to promote sustainable practices in biodiversity conservation. One of the most significant agreements is the Convention on Biological Diversity (CBD), which was established in 1992 and has seen participation from 196 countries. This convention is crucial for biodiversity-rich nations, particularly those located along the equator, such as China, Brazil, Malaysia, and Indonesia.
Tropical forests, which cover only 7% of the Earth's land area, are home to about 80% of the world's biodiversity. Interestingly, marine biodiversity is often richer than terrestrial biodiversity.
When discussing national biodiversity, it is essential to consider the geographic location, vegetation, climate, and habitat of a nation. For instance, in India, the animals found in the Himalayan region differ significantly from those in desert areas or plains. Himalayan animals typically have thick fur to protect against cold, while animals in the plains have less fur due to the warmer climate.
India's National Biodiversity Act recognizes 8,276 species, including bacteria, fungi, plants, and animals. The distribution of these species is as follows:
Parasitic organisms depend entirely on their hosts for survival, while mutualistic organisms provide benefits to their hosts in return for resources. A prime example of mutualism is found in nitrogen-fixing bacteria located in the root nodules of legumes like chickpeas and peas, where the bacteria provide nitrogen to the plants in exchange for food materials.
India is home to several globally recognized species, including:
The national animal of India is the tiger, and the national bird is the peacock. The country boasts a rich variety of flora and fauna, with approximately 75,000 known species of animals, including:
The vegetation in India varies significantly based on geographical location. Starting from the Himalayan region, we find:
In summary, biodiversity is a complex and vital aspect of our planet, encompassing a vast array of species and ecosystems. Understanding its current status at local, national, and global levels is crucial for effective conservation and sustainable practices. By recognizing the importance of biodiversity and implementing strategies for its preservation, we can ensure a healthier planet for future generations.
