1.1 Biodiversity- Meaning and Importance
According to the Convention of Biological Diversity (CBD)- Biodiversity is defined as the variability among living organisms from which all sources including inter alia, terrestrial, marine and other aquatic ecosystems and the complexes of which they are part; this includes diversity within species, between species and of ecosystems themselves. Floristic diversity refers to the variety and variability of plants in a region. Floristic structure is considered as one of the major exceptional characters of the community (Dansereau, 1960) and therefore any disturbances in phytodiversity is projected to change the community organization. It is considered to be the vital component of ecosystem (Hutchinson, …show more content…
According to IUCN an Endangered species is a opulation of organism hich is at risk of becoming extinct because of its less number. Threatened species is a term refered to species likely to become endangered within near future. IUCN published approx.. 41,500 endangered species worldwide as the Red List of Threatened Species. The IUCN Categories and Criteria were developed in 1994, aimed to improve objectivity and transparency in assessing the conservation status of species and to improve consistency and understanding among users. These criteria and categories are helpful to assess extinction risk for the larger region that require new evaluations using the collective data from across the entire region. Data collected from individual smaller regions for the assessment of the larger region are often important for conservation …show more content…
The International Union for Conservation of Nature and Natural Resources (IUCN) Red List of Threatened species has estimated about 15.8 % of the world’s vascular plants (which is around 34, 000 species) facing high risk of extinction, unfortunately 560 plant are reported from India (Phartyal et al. 2002). Increasing demand on medicinal plant is likely to rise up to approximately US $ 1 billion per year in India (Kala et al. 2006), Deforestation for fuel-wood, invasive species and climate change are other drivers of diversity loss (Gardner et al. 2009; Morris, 2010; Anonymous, 2013). In order to withstand our biological wealth, it is prerequisite to document, preserve and manifest the knowledge which has to be initiated at regional level itself. Regional floristic survey is considered as mandatory organization to ascertain the species area relations, species range, floristic erraticism, economic/commercial value, distribution pattern of the specific taxa and bio-geographic region. Floristic diversity can be measured at any level from global diversity to ecosystem, community, species, populations, individuals and genes within a single individual to quantify the current scenario of ecological status of plant community. Present effort attempted to assess the threat categories based on habitat specificity, distribution range, uses
According to the Convention of Biological Diversity (CBD)- Biodiversity is defined as the variability among living organisms from which all sources including inter alia, terrestrial, marine and other aquatic ecosystems and the complexes of which they are part; this includes diversity within species, between species and of ecosystems themselves. Floristic diversity refers to the variety and variability of plants in a region. Floristic structure is considered as one of the major exceptional characters of the community (Dansereau, 1960) and therefore any disturbances in phytodiversity is projected to change the community organization. It is considered to be the vital component of ecosystem (Hutchinson, …show more content…
According to IUCN an Endangered species is a opulation of organism hich is at risk of becoming extinct because of its less number. Threatened species is a term refered to species likely to become endangered within near future. IUCN published approx.. 41,500 endangered species worldwide as the Red List of Threatened Species. The IUCN Categories and Criteria were developed in 1994, aimed to improve objectivity and transparency in assessing the conservation status of species and to improve consistency and understanding among users. These criteria and categories are helpful to assess extinction risk for the larger region that require new evaluations using the collective data from across the entire region. Data collected from individual smaller regions for the assessment of the larger region are often important for conservation …show more content…
The International Union for Conservation of Nature and Natural Resources (IUCN) Red List of Threatened species has estimated about 15.8 % of the world’s vascular plants (which is around 34, 000 species) facing high risk of extinction, unfortunately 560 plant are reported from India (Phartyal et al. 2002). Increasing demand on medicinal plant is likely to rise up to approximately US $ 1 billion per year in India (Kala et al. 2006), Deforestation for fuel-wood, invasive species and climate change are other drivers of diversity loss (Gardner et al. 2009; Morris, 2010; Anonymous, 2013). In order to withstand our biological wealth, it is prerequisite to document, preserve and manifest the knowledge which has to be initiated at regional level itself. Regional floristic survey is considered as mandatory organization to ascertain the species area relations, species range, floristic erraticism, economic/commercial value, distribution pattern of the specific taxa and bio-geographic region. Floristic diversity can be measured at any level from global diversity to ecosystem, community, species, populations, individuals and genes within a single individual to quantify the current scenario of ecological status of plant community. Present effort attempted to assess the threat categories based on habitat specificity, distribution range, uses