Question

What is the difference between alpha diversity and gamma diversity?

1) Gamma diversity is the loss of species due to human activities, and alpha diversity is diversity on a greater scale.
2) Alpha diversity is on a much smaller spatial scale than gamma diversity.
3) Gamma diversity is the difference between local diversity and regional diversity, and alpha diversity is diversity on a greater scale.
4) Alpha diversity is the accumulation of many different areas with defined gamma diversities.

Answer 1

Alpha diversity measures the species richness within a particular area or ecosystem, while gamma diversity is the measure of overall diversity for the different ecosystems within a region.Hence, Option 2 in your provided list is correct.

Step-by-step explanation:

The difference between alpha diversity and gamma diversity is related to the scale and scope of biodiversity measurement within ecosystems. Alpha diversity refers to the diversity within a particular area or ecosystem, often quantifying local species richness. In contrast, gamma diversity refers to the overall diversity within the different constituent ecosystems of a region, encompassing broader geographical scales.

Option 2 in your provided list is correct: Alpha diversity is observed on a smaller spatial scale, such as a singular ecosystem or community, whereas gamma diversity encompasses a larger spatial scale, including different ecosystems within a geographical area. This means that alpha diversity focuses on the richness within one designated area, whereas gamma diversity combines the richness of many local areas (each with their own alpha diversities) to give an overarching view of species variety in a larger region.