Diversity index lab is a scientific measure of the diversity of species within a particular ecosystem. It is a way to assess the richness and evenness of species within a community, and is often used in conservation efforts to determine the health and stability of an ecosystem.
There are several different types of diversity indices that can be used, each with its own set of strengths and limitations. One commonly used index is the Shannon-Wiener index, which measures both the richness and evenness of species within a community. This index is calculated by summing the logarithm of the proportion of each species present in the community, and can be used to compare the diversity of different communities.
Another popular diversity index is the Simpson index, which measures the probability that two individuals drawn at random from a community will be of different species. This index is useful for assessing the stability of a community, as it is more sensitive to changes in the relative abundance of species than the Shannon-Wiener index.
In addition to these indices, there are also indices that focus specifically on the richness of a community, such as the Margalef index, and those that focus on the evenness of species, such as the Pielou index.
Diversity indices can be useful tools for understanding the complexity and structure of an ecosystem, and can help inform conservation and management efforts. However, it is important to note that these indices do not capture all aspects of diversity, and should be used in conjunction with other measures and observations to get a full picture of the health and stability of an ecosystem.
Overall, diversity index lab is a valuable tool for scientists and conservationists seeking to understand and protect the diversity of species within an ecosystem. By measuring and monitoring the diversity of species within a community, we can better understand the dynamics of an ecosystem and take steps to protect and preserve it for future generations.
Simpson's Diversity Index Lab
Students from the parking lot near the forest ecosystem often throw plastic bottles, cigarette butts, and even plastic bags behind the parking lot, into the forest. Altogether, Christopher collected a total of 45 organisms. Any values above 0. This index reflects the numerous types of species within a dataset. To help with deforestation humans should establish organizations whose job is to replant trees to help balance the ones that were cut down, to help with overfishing a quota system should be established that would limit the number of fish that a person can obtain per year, and to help with water pollution there should be regulations on nonpoint water pollution sources such as buffer zones and containment ponds. Evolution, pollination, nutrient cycling, and even control of pests are positive outcomes due to high biodiversity.
It respects individuality while promoting respect for others. Why are populations that are more diverse usually more stable? High biodiversity have endless ecological benefits. The Shannon Diversity Index allows scientists to calculate and identify an ecosystem's level of biodiversity. This lab will be completed within the timespan of a week. The study was conducted by seventeen statistic math students from a small university located in Greensboro, North Carolina.
The lower the value of H, the lower the diversity. Using the letter symbols, record each candy as it is removed. In 2011, Chicago launched the Office of New Americans under the Office of the Mayor. How did the diversity index values vary from the chocolate candies and fruit candies? A few categories could be how you look, your beliefs, or your ethnicity. Community A has lower biodiversity than B which means that it is not as healthy of an ecosystem. Example: R, Bl, G, G, Y, Y, G, Bl, Bl has 4 species of plants.
Biological diversity can be quantified in many different ways. Which habitat is the most diverse? The higher the index the greater the biodiversity. The total number of individuals in sample 1. Furthermore, high values of some indices mean more diversity whereas the. As represented in the table and the graph it shows that blue had the most 26 with green in second 6.
Wildfires, droughts, hurricanes, invasive species, and overexploitation are all natural factors which directly correlate to the depletion of biodiversity. Use the table below to answer this question provide at least 2 signs for each of the following areas of diversity. It turned out that my prediction was incorrect and blue had the highest quantity in my bag. He examined the sample and classified what he saw the layer to be composed of. Richness - Richness is a measure of the number of different kinds of organisms present in a particular area. The samples for Community B was leaf litter taken from a forest ecosystem at a high elevation.
The Office includes a Language Access Advisory Committee that collects data on language access needs. Community B's leaf litter consisted of spiders, grub worms, isopods, ants, aphids, ticks, springtails, japygids, roaches, true bugs, beetle mites, centipedes, millipedes, and harvestman. While there is no way to prevent the natural factors that cause this depletion, there is a way to prevent the anthropogenic factors. Background: In order for an ecosystem to thrive, it must be highly biodiverse. Count the number of species in each sample. Record the diversity index after each trial in the table.
Finally, Functional Diversity is the biological or chemical process needed to species or community ecosystem survival. To give an example, we might have sampled two different fields for wildflowers. Using these data, I calculated several diversity indices with the program, BioTools, an old Add-In to Microsoft Excel. Genetic Diversity is the variety of genetic information within a species or population. There are four categories of which diversity falls under. For example, a healthy forest or woodland should have a diversity index of 0.
Biology Ecology Diversity Index Lab Introduction The measure of the biodiversity of organisms in a given area is known as the diversity index. The Shannon Diversity Index sometimes called the Shannon-Wiener Index is a way to measure the diversity of species in a community. The trend in the definition of diversity seems to favor a broad definition that goes beyond the visible differences that, for many people, even closely related to affirmative… U2 Assessment 2. Some communities may be simple enough to allow complete species counts to determine species richness. Genetic, Species, Ecological, and Functional.
Record your results using the following table. These indices are in a second worksheet. Naturally, biodiversity can be lost if there is a drought, a wildfire, or hurricane. The better the results, the better the ecosystem. The hypothesis states that Community B would have a greater biodiversity than Community A. Introduction: In this lab, Christopher Chang is going to examine the organisms found in the leaf litter of a forest in Dahlonega, Georgia.
