This category explains the species-area relationship, including its mathematical models, factors affecting it, and its role in conservation planning and habitat fragmentation studies.
Alexander von Humboldt observed that species richness increases with increasing explored area, up to a limit.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Species-Area Relationship
On a logarithmic scale, the species-area relationship becomes a straight line represented by log S = log C + Z log A.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Species-Area Relationship
Direct economic benefits belong to the narrowly utilitarian values of biodiversity, whereas oxygen production, pollination, and aesthetic value are broadly utilitarian values.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Species-Area Relationship
For most species and taxonomic groups, the slope (Z) ranges from 0.1 to 0.2. For very large areas such as continents, it may range from 0.6 to 1.2.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Species-Area Relationship
On a logarithmic scale, the species-area relationship is represented by the equation log S = log C + Z log A, which is a straight line.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Species-Area Relationship
For most species and taxonomic groups, the slope (Z) of the species-area relationship ranges from 0.1 to 0.2. On very large areas such as continents, it may range from 0.6 to 1.2.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Species-Area Relationship
Lantana camara is an alien invasive plant introduced into India that threatens native biodiversity.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Species-Area Relationship
Alexander von Humboldt observed that species richness increases with increasing explored area, but only up to a limit.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Species-Area Relationship
Endemic species are naturally restricted to a particular geographical region and are not found elsewhere.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Species-Area Relationship
Alexander von Humboldt observed that species richness increases with increasing explored area, up to a limit.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Species-Area Relationship
Biodiversity provides ecosystem services such as climate regulation, maintenance of soil fertility, pollination, nutrient cycling, and seed dispersal.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Species-Area Relationship
Alexander von Humboldt showed that species richness increases with explored area, and on a logarithmic scale the relationship becomes a straight line (log S = log C + Z log A).
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Species-Area Relationship
