Concept explainers
To determine: The way in which reintroduction of wolves to Yellowstone National Park will ultimately result in a more varied and lush plant consumption.
Introduction: For the regulation of various ecosystems, there are two regulatory processes, namely bottom-up process and top-down process. The bottom-up processes are dependent upon the interrelated series of organisms in a food web through which energy flows in an ecosystem. The top-down processes are mainly the regulatory processes of the ecosystem that function by the interactions of trophic level.
To determine: Whether this is an example of a bottom-up or top-down process.
Introduction: For the regulation of various ecosystems, there are two regulatory processes, namely bottom-up process and top-down process. The bottom-up processes are dependent upon the interrelated series of organisms in a food web through which energy flows in an ecosystem. The top-down processes are mainly the regulatory processes of the ecosystem that function by the interactions of trophic level.
To determine: The reason why this is an example of top-down process.
Introduction: For the regulation of various ecosystems, there are two regulatory processes, namely bottom-up process and top-down process. The bottom-up processes are dependent upon the interrelated series of organisms in a food web through which energy flows in an ecosystem. The top-down processes are mainly the regulatory processes of the ecosystem that function by the interactions of trophic level.
Want to see the full answer?
Check out a sample textbook solutionChapter 54 Solutions
Biology (MindTap Course List)
- Explain how building roads into previously inaccessible forests can harm the forests. Distinguish amongselective cutting, clear-cutting, and strip cutting in he harvesting of trees. What are two types of forestfires? What are some benefits of occasional surfacefires?arrow_forwardGenerally, coniferous trees provide softwood lumber, whereas deciduous trees provide hardwood lumber. a) Which type is much more common in Canada’s forests and in Canada’s forest product output? b) Where should you look to find hardwood trees, north or south? Why? c) Name three hardwood species and three softwood species. d) Describe typical uses for softwood lumber and for hardwood lumber.arrow_forwardInMichael Huston’s studies of Costa Rican forest diversity, the highest treediversity was found on soils with:a.very high fertility.b.moderate fertility.c.very low fertility.d.either high or low, but not moderate, fertility.e.there was no relationship between diversity and soil fertility.arrow_forward
- Why is regular burning (thru natural fires) an important part of maintaining the health of grasslands and coniferous forests? Identify benefits that are specific to each biome. Also, discuss how suppressing fires could negatively affect each system.arrow_forwardThe increased biodiversity of the Sonoran Desert is a product of the presence of both High RGR and High WUE species. What is the reason we find both types of plants and not just one or the other? Question options: a. Different heights allow species to grow fast or slow in different light environments. b. The plants are always found growing together suggesting they have a mutualistic interaction. c. Different species take advantage of different kinds of rain storms that happen irregularly. d. One type of species facilitates the growth of the other by improving the soil conditions.arrow_forward, please look thoughtfully at the image below of a 4000 year-old bristlecone pine in the White Mountains of eastern California. Then, please answer the following questions: How might such old trees provide information about the region's climate? Does this area appear hospitable to plant growth? What (in the image) supports your response? What environmental factors might account for this (referring to that which you included in your answer to the previous question)?arrow_forward
- Draw a concept map that shows biodiversity being affected by changes in climate as a result of changing patterns of continents triggered by plate tectonics? Please solsolarrow_forwardWhich of these hypotheses does not explain why increased CO2 levels in the atmosphere could cause a decrease in the productivity of some crops because of changes in climate? A) There could be increases in average winter temperatures that reduce the growth of crops. B) There could be decreases in precipitation in some regions that reduce growth in some crops. C) There could be shifts in the ranges of some important species in the community, such as pollinators, that cause reduction of growth in some crops.arrow_forwardYou suspect that deer are restricting the distribution of a tree species by preferentially eating the seedlings of the tree. How might you test this hypothesis?arrow_forward
- Based on what you know about tropical forests versus temperateforests, why do you think temperate forest habitats are more suitablefor long-term agriculture, despite the fact that they have a shortergrowing season than tropical forests?arrow_forwardThe model of metapopulations also postulates that many species occupy their patches only temporarily, that sooner or later they will be eliminated by competition or some other factor. If this is true, would such a patch make a suitable wildlife preserve for that species? Discuss what wildlife managers might have to do with such a preserve.arrow_forwardDescribe how you obtain energy from the food that you consume in an indirect way.Some species are able to thrive without sunshine, but how??arrow_forward
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning