Alpha diversity is the biodiversity present (a) Within the community(b) Between community(c) Ranges of communities(d) All of the above (2024)

FAQs

Alpha diversity is the biodiversity present (a) Within the community(b) Between community(c) Ranges of communities(d) All of the above? ›

So, the correct answer is 'Within community'.

The biodiversity present within the community is said to be alpha diversity. It is usually expressed by the number of species or species richness of a particular area. Along with beta and gamma diversity, alpha diversity acts as a tool for the measurement of biodiversity.

Alpha diversity refers to the diversity within a particular area or ecosystem, and is usually expressed by the number of species (i.e., species richness) in that ecosystem.

Alpha diversity refers to diversity on a local scale, describing the species diversity (richness) within a functional community. For example, alpha diversity describes the observed species diversity within a defined plot or within a defined ecological unit, such as a pond, a field, or a patch of forest.

Beta (β) diversity refers to diversity between communities. It is the ratio between regional (γ) and local (α) species diversity. The term was introduced by R. H. Whittaker. It can be measured in the terms of changes in diversity of species from one environment to another.

Correct option is D.

Assertion :The species diversity present in a given community or habitat is referred to as alpha diversity. Reason: Alpha diversity is usually expressed by species richness and species evenness in that community or habitat.

While alpha diversity is a measure of microbiome diversity applicable to a single sample, beta diversity is a measure of the similarity or dissimilarity of two communities.

Alpha diversity (α-diversity) is defined as the mean diversity of species in different sites or habitats within a local scale. This term was coined by Robert Harding Whittaker along with other connected terminologies such as beta diversity (β-diversity) and gamma diversity (γ-diversity).

Consider a mountain slope, there will be a variety of woodland and grassland areas on this hillside. Alpha diversity refers to the variety of species found in each forest or grassland area on the slope.

Beta diversity: It is species diversity b/w two adjacent ecosystems and is obtained by comparing the number of species unique to each ecosystem. Gamma diversity: It refers to the diversity of the habitats over the total landscape or a geographical area.

What are the alpha levels? ›

In frequentist statistics, the alpha level (also known as the significance level) is the probability of rejecting the null hypothesis when it is true. In the context of physiotherapy research, the null hypothesis might be that there is no difference in pain reduction between two different physiotherapy interventions.

The value of an <alpha-value> is given as either a <number> or a <percentage> . If given as a number, the useful range is 0 (fully transparent) to 1.0 (fully opaque), with decimal values in between; that is, 0.5 indicates that half of the foreground color is used and half of the background color is used.

In most cases, researchers use an alpha of 0.05, which means that there is a less than 5% chance that the data being tested could have occurred under the null hypothesis.

Diversity comes in two levels, with surface-level diversity being individual traits that are visible, such as age, gender diversity, visible disabilities, ethnicity, and body shape. The other side of the iceberg is deep-level diversity which covers the non-visible characteristics that make everyone unique.

Some examples are: species found in or around a desert spring, the collection of species associated with ripening figs in a tropical forest, those clustered around a hydrothermal vent on the ocean floor, those in the spray zone of a waterfall, or under warm stones in the alpine zone on a mountaintop.

A study of 180 Spanish corporate managers explored perceptions of diversity and found that depending on who is answering, diversity usually means one of three things: demographic diversity (our gender, race, sexual orientation, and so on), experiential diversity (our affinities, hobbies, and abilities), and cognitive ...

Alpha diversity refers to the variety of species found in each forest or grassland area on the slope.

Some of the common alpha diversity indices are the following: (1) Chao Index, (2) Simpson Index, (3) Shannon Index, (4) ACE Index, and (5) Good's Coverage Index. . Shannon's diversity index quantifies the uncertainty in predicting the species identity of an individual that is taken at random from the dataset.

We measure alpha-diversity as the observed richness (number of taxa) or evenness (the relative abundances of those taxa) of an average sample within a habitat type. We quantify beta-diversity as the variability in community composition (the identity of taxa observed) among samples within a habitat [21].

An example of Alpha, Beta and Gamma diversity is explained through a mountain landscape. Under a mountain landscape, there are many patches of forests and grasslands and the species under each grassland or forest patch under the slope will denote the Alpha diversity.