Apr 30, 2016 · A. Zooplankton eat (graze) floating algae called phytoplankton. B. Individual pike (large fish) compete with each other for feeding territories. C. Big fish eat small fish. D. Large fish reduce the abundance of phytoplankton. This occurs because large fish eat small fish, which leads to greater zooplankton numbers.
A total of 244 individuals is collected from 2 m 2 of stream bottom habitat. In this sample there are 22 recognizably different types of invertebrate. The average total length of the individuals is 6.7 mm. What is the best estimate of species richness based on these data? 1. 22 2. 122 3. 6.7 4. 244 Feedback Correct.
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Species richness will be lower in a _____ area than in a _____ area according to the species-area hypothesis. smaller; larger American ecologist Donald Strong's experiment showed that trees found over a large region support more insect species than trees found in a smaller region, even in relatively new tree species such as apple and lime trees.
A group of organisms of different species occupying the same area at the same time. Community ecology is the. study of factors that influence the number and abundance of species in a community.
American ecologist Donald Strong's experiment showed that trees found over a large region support more insect species than trees found in a smaller region, even in relatively new tree species such as apple and lime trees. This experiment. 1. supports the species-area hypothesis.
Shannon diversity index. In community A there are three species of butterflies, with the same number of individuals from each species. In community B there are also three species of butterflies, but two species are very rare, with only a very few individuals. The total number of butterflies in the two communities is the same.
answer choices. The total number of finches in the population increased, and the smaller-beaked finches were more successful in the drier environment. The total number of finches in the population increased, and the larger-beaked finches were more successful in the drier environment.
Plant species that are well adapted will survive and reproduce, leading to a change in the ecosystem biodiversity through the process of natural selection. <p>The temperature of Earth rises and biodiversity increases immediately after a volcanic eruption.</p>.
Smaller-beaked finches are better suited for eating grasses and small seeds. Larger-beaked finches are better suited for cracking larger seeds and nuts. In 1977 a drought took place and the vegetation of the island was affected by the lack of rain.
Habitat diversity will increase the available niches if the landscape becomes more uniform after a disturbance. Ecosystems with more species diversity are more likely to recover after a disturbance than ecosystems with low species diversity. Smaller populations are less likely to go extinct than larger populations, ...
answer choices. Genetic biodiversity is a measure of the total number of genes in a community. A narrow distribution of habitats leads to an increase in species diversity. Global hotspots are areas where species diversity is thriving due to habitat restoration.
A population with high genetic biodiversity is better able to respond to environmental stressors. <p>Genetic biodiversity is a measure of the total number of genes in a community.</p>. alternatives. <p>A narrow distribution of habitats leads to an increase in species diversity.</p>.
The rate of immigration is lower for the small island than for the large island. The small island has niches that are more like the mainland than the large island. The small island has more available resources than the large island. The rate of species extinction is lower on the small island than on the large island.