How can the effect of white-band disease best be described? What are the benefits of higher-diversity communities? Explain. A community is best described as the collection of: B. populations of different species that live in a particular area. WHAT IF? As a result, there might be fewer infected ticks where shrew populations are less susceptible to the Lyme pathogen and more infected ticks where shrews are more susceptible. Problem: A community is best described as the collection of:A. ecosystems found in a particular areaB. The absence of fire for 100 years would represent a change to a low level of distrubance. What is the order of a general food chain starting at the bottom and working up to the top? Other observations showed that Balanus cannot survive high on the rocks because it dries out during low tides. We would expect that (a) population sizes would decrease because there would be fewer resources and less suitable habitat; (b) the extinction curve would rise more rapidly as the number of species on the island increased because small islands generally have fewer resources, less diverse habitats, and smaller population sizes; and (c) the predicted equilibrium species number would become smaller. The term used to describe a harmless organism resembling a harmful one is __________. Positive interactions include __________________ and ________________. The biodiversity pattern that shows that the larger the geographic area of a community is, the more species it has. biotic interactions that occur in a particular area. The pathway along which food energy is transferred from tropic level to trophic level, beginning with producers. Interspecific competition has negative effects on both species (-/-). RESEARCHINSTRUMENTS 7. Symbiotic nitrogen fixation could not occur until plants were present at the side. See more. Pithy History Definitions No one could argue that the best definition isn't a short one, but it helps if you can be witty as well. populations of different species that live in a particular area.C. Flounder is a type of fish that looks like the seafloor. On the other hand, moderate levels of disturbance can facilitate coexistence of a greater number of species in a community by preventing competitively dominant species from becoming abundant enough to eliminate other species from the community. How many kilograms of tertiary consumers could be supported? One of the competing species will become locally extinct because of the greater reproductive success of the more efficient competitor. Explain. How Do You Develop A Plan For Assessing Local Needs and Resources? A group of inidviduals of the same species residing in a common area is known as a population. The wealthy b. Because of their greater mobility, birds disperse to islands more often than snakes and lizards, so birds should have greater richness. Amazonian rain forests, which have extremely high plant and animal diversity, had the most acidic soils and the lowest bacterial diversity of the samples tested. D. The effect of grazing intensity by bison on plant species diversity. Higher-diversity communities are generally more productive and are better able to withstand and recover from environmental stresses, such as droughts. A community is best defined as… Select one: A. The most critical objective of data collection is ensuring that information-rich and reliable data is collected for statistical analysis so that data-driven decisions can be made for research. Explain how natural selection could increase the resemblance of a harmless species to a distantly related harmful species. Which is the most likely reason that Species A and Specices B share this trait? Communities may share a sense of place situated in a given geographical area or in virtual space through communication platforms. A +/- ecological interaction in which one species benefits by feeding on the other species, which is harmed. What are two key factors in species richness equatorial-polar gradients? Consider a grassland with five trophic levels: grasses, mice, snakes, raccoons, and bobcats. D. biotic interactions that occur in a particular area. An example of ______________________ can be seen in two species of Galapagos finches, Geospiza fuliginosa and Geospiza fortis: Beak depths in these species are similar in allopatric populations but have diverged considerably in sympatric populations adaptations that favor eating different-sized seeds. Trophic structure; food chains; food webs. What professor is this problem relevant for? A model of community organizaition in which mineral nutrients influence community organization by controlling plant or phytoplankton numbers, which in turn control herbivore numbers, which in turn control predator numbers. WHAT IF? Strategies Guided by Best Practices. Which of the following is NOT a common animal adaptation to desert conditions?A. During succession, how might the early species facilitate the arrival of other species? The much larger animal remains still, with its mouth open, and allows the smaller fish free passage as it picks out and eats tiny parasites living inside the eel's mouth and on its skin.". Species richness explains the amount of one population, but does not account for the variation of species in an ecological community. How would Balanus's realized niche compare with its fundamental niche? Which statement correctly describes conditions on a glacier moraine during the reign of pioneer species? Each existing community changes the environment. ________________________ (-/-) Two or more species compete for a resource that is in short supply. Dominant species exert a powerful control over the occurrence and distribution of other species. a. populations of different species that live in a particular area The semi-structured interview This can cause species diversity to be high in the tropics simply because there has been more time for speciation to occur. A food chain presents a set of one-way transfers of food energy up to successively higher trophic levels. In Paine's experiment the urchins were eating the kelp. Increasing evidence suggests that __________________ and lack of equilibrium, rather than stability and equilibrium, are the norm for most communities. Reciprocal mimicry by two unpalatable species. The first phase in the data collection process involves a request sent by postal mail urging sample members to respond by Internet. A community of practice is a group of people who "share a concern or a passion for something they do and learn how to do it better as they interact regularly". This is an example of what natural phenomenon ? Almost all the pioneer species begin the succession with very poor growth and yellow leaves due to inadequate _______ supply. Ecologists can identify the ___________________________ of a species by testing the range of conditions in which it grows and reproduces in the absence of competitors. What are the requirements for character displacement? The deer population dwindled and finally disappeared. MacArthur and Wilson's model is called the ____________ becuase an equilibrium will eventually be reached where the rate of species immigration equals the rate of species extinction. Compared to a community with a very high proportion of one species, one with a more even proportion of species is considered more diverse. 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