Concept explainers
To explain:
Whether the source of a forest product was ever overexploited.
Introduction:
The trees of forest biome provide wood for lumbar which is used in many commercial purposes like housing, furniture, paper and many other products. To obtain this product from forest, forest biome is being destroyed which adversely affects the natural ecosystem of the biome.
To determine:
The measures that have been taken to ensure sustainability.
Introduction:
There are some sustainable wood harvesting methods which provide wood for various purposes like paper and lumbar without effectively damaging the natural ecosystem of a forest biome.
To determine:
The challenges that might be brought in future and also explain how these challenges can be overcome.
Introduction:
Deforestation is the clearance of forest and cutting of tress permanently, so that the lands are available for other purposes. Deforestation greatly affects the carbon cycle. The presence of trees balances the number of carbon present in the environment. The trees use carbon in the process of photosynthesis in which trees make their food. Due to deforestation, the amount of carbon dioxide increase in the environment that leads to global warming and the greenhouse effect.
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Biology: Life on Earth with Physiology (11th Edition)
- In a temperate grassland system area of North America, vegetation has been destroyed by fire. What will happen to the net primary productivity and the local ecosystem when rains return in the next season? a The grasses will grow back, but the herbivores that lived there will not return, as they would have found new land to live on. Therefore, the net primary productivity would decrease. b The grasses will not grow back, therefore the herbivores that lived there will not return. Thus, the net primary productivity would decrease. c The grasses will grow back and the herbivores that lived there will return. The net primary productivity should also be similar to the previous season. d The grasses will grow back and the herbivores that lived there will return. The net primary productivity would be less than the previous season.arrow_forwardIn trying to protect and conserve natural resources, it is advisable to identify which resources are renewable and non-renewable. Which should have stricter conservation rules, renewable or nonrenewable resources? Why?arrow_forwardA group of researchers are assessing energy availability in a terrestrial ecosystem. The image shows the food web for this ecosystem. They set up three plots and assess the biomass of producers, primary consumers, and secondary consumers. Rabbits and grasshoppers feed on ground cover plants that grow on the forest floor. Plot 1 is composed of mature hardwood trees, and only 25% of the sunlight reaches the shrubs and grasses compared to plots 2 and 3, which have fewer trees and allow more sunlight to reach the forest floor. Based on the food web shown here, which of the following best describes how the reduction in sunlight to the forest floor would impact the number of primary consumers (squirrel, grasshopper, rabbit, and deer) in plot 1 compared to the other plots? A - Plot 1 will show an increase in deer only because they feed on trees. B - Plot 1 will show a decrease in squirrels and rabbits, while deer and grasshoppers will increase. C - Plot 1 will show a decrease in rabbits and…arrow_forward
- The study of nutrient cycling though the environment is an example of which of the following? a. organismal ecology b. population ecology c. community ecology d. ecosystem ecologyarrow_forwardWhat does each pie slice represent? a. Amount of energy available to support each trophic level b. Amount of energy that can be converted to biomass at a higher trophic level c. Amount of energy available from the sun d. Inefficiency of energy flow from one trophic level to the nextarrow_forwardEcosystemA hasprimary production of 1000 g C /m2/yr and ecological efficiency of 10%. Ecosystem B has primary production of 300 g C /m2/yr and an ecological efficiency of 25%. a.Which ecosystem will have more production at thesecondary consumer (carnivore) trophic level? b.Which ecosystem is more likely to support an endothermic primary consumer (herbivore)? c.If atrophic level requires at least 1 gC/m2/yr in order to exist, how many trophic levels can each of these ecosystems support?d.Given your answer to part c, which do you thinkhas a larger impact on the energy available at upper trophic levels: primary productivity or efficiency of energy movement across trophic levels?arrow_forward
- In some cases, animals reach their biotic potential (if for a short period of time) and wreak havoc on the environment. What is biotic potential and why would reaching it create problems for the environment?arrow_forwardSubmit your project researching an ecosystem you would find in your state. You may submit a poster, presentation, link to your created website, or other document. Be sure to include the following: • Describe at least ten biotic factors found in the ecosystem and at least ten abiotic factors. • Give at least two examples of food chains that could be found in the ecosystem.arrow_forwardIn some marine habitats in New England, the population density of lobsters has been depleted due to heavy fishing. When this happens, it often follows that the diversity of species in the biological communities is reduced. Based on this observation, how would you characterize lobsters? a keystone organism a decomposer a crustacean a superior predator a producer The composition of a community refers to the nutrients available in the soil. type of succession that occurs locally. sunlight available to drive the energy needed for metabolism. extent vegetation covers the ground--a desert has low composition. types of species adapted to living there. Small fish sometimes swim very close to large predatory fishes such as sharks. There is no risk since the shark does not feed on these smaller fish. The small fish are able to eat the remains of prey such as seals that the shark rips apart when eating.…arrow_forward
- Which statement about energy flow in ecosystems is accurate? A.Energy flow reaches an equilibrium within ecosystems such that every trophic level has the same amount of energy. B. Because forests have relatively few large trees which support numerous smaller organisms, they have less energy at the lowest trophic level than at higher trophic levels. C. Energy is recycled within ecosystems, moving from producers to consumers to decomposers and back to producers. D. Energy flows through ecosystems with some lost at every transition resulting in lower trophic levels always containing more energy than higher trophic levels. E. Aquatic ecosystems have more energy at higher trophic levels than at lower trophic levels, whereas terrestrial ecosystems have more energy at lower trophic levels. Please answer asap and type your answer and do not copy from anywhere pleasearrow_forwardYou are studying primary productivity and biodiversity patterns of an ecosystem. The ecosystem is represented by the climatograph below. The Gross Primary Productivity (GPP) is measured to be 5000 grams of carbon per square meter per year, and the Total Respiration (RT) is measured to be 300 grams of carbon per square meter per year. - What kind of biome is this? - Calculate the Net Ecosystem Production (NEP) for this ecosystem - What does the calculated NEP value indicate about the carbon balance and overall productivity of the ecosystem? (one sentence) - Based on both the climatograph and the NEP, what can you say about the biodiversity of plants versus consumers? Choice 1 of 4:plant biodiversity is greater than consumer biodiversity Choice 2 of 4:consumer biodiversity is greater than plant biodiversity Choice 3 of 4:consumer biodiversity is the same as plant biodiversity Choice 4 of 4:lower plant biodiversity compared to consumer biodiversityarrow_forwardEarth has a total of 11.9 billion gha of productive land. How many people could Earth supportsustainably if the average ecological footprint were 8 gha per person (as in the United States)?arrow_forward
- Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning