Environmental science 110 27. One suggestion for sustainably


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Environmental science 110 27. One suggestion for sustainably managing fisheries is to use wide-mashed nets for harvesting fish caught with nets. This would allow escape of __? 28. __ is a non-tree plant fiber from a rapidly growing woody plant that yields more paper pulp per area of land than tree farms do. 35. Which of the following is not a factor in habitat fragmentationa. barriers that limit the ability of species to find food and mates b. blockage of migration routesc. the vulnerability of small populationsd. barriers such as roads that limit the ability of some species to disperse and colonize new arease. all of the choices cause habitat fragmentation 37. Which of the following statements is not true about the Convention on Biological Diversity? a. It has been ratified by 191 countries.b. It legally commits participating governments to reducing the rate of biodiversity loss.c. It focuses on ecosystems rather than individual species.d. It has been ratified by the United States.e. Implementation has been slow. 39. The International Whaling Commission moratorium on commercial whaling was imposed in 1986. Followingthis: a. Worldwide commercial whaling was completely eliminated. b. Even Japan stopped commercial whalingc. Whale killing declined, and only 1,400 whales were killed in 2008, compared to over 42,000 in 1970.d. There was no change in the number of whales killed outside U.S. waters.e. Commercial whaling actually increased in some areas outside the U.S. Questions 45 & 46 refer to the following scenario: A certain lake in the arid west contains an endangered species offish. The legal status of this fish required water diversions out of the river feeding the lake to be decreasedsubstantially. About 10 years following this decree, the declining cottonwood forest and canopy along the riverbankswas noted to be recovering.45. This situation illustrates the potential effectiveness ofa. the species approach to sustaining biodiversity b. the ecosystem approach to sustaining biodiversityc. cottonwood trees as part of all stream recovery programs d. water as a solution to species declinee. fish as indicator species46. Resurgence of the cottonwood forest along the riverbank led to cooler water in certain areas of the river. Coolwater contains more oxygen than warm water. How would this cooler water affect the native fish populations inthe river?a. they would decrease b. they would stay the same c. they would initially increase and then decreased. they would increasee. they would be choked out by the algal bloom that resulted from the increased oxygenESSAY47. The Convention on International Trade in Endangered Species (CITES) focuses on ecosystems rather thanindividual species. Explain why this strategy is/not better than focusing on a particular species.48. Consider the quote below from the chapter, and comment on the implications of this statement as it applies toseparate countries, and the world as a whole.Protecting biodiversity is no longer simply a matter of passing and enforcing endangered specieslaws and setting aside parks and preserves. It will also require slowing climate change, which willaffect the polar bear and many other species.49. Using the above pictured table, explain which country would gain the most from adopting a debt-for-natureswap?50. You are the forest manager in a large tract of forest surrounding a lake resort town of 15,000 residents in theAdirondacks. Each year, over 200,000 vacationers visit and stay in this town for short periods of time. The forestaround this resort and lake has become infested with a bark beetle that has caused the death of about 20–35% of thetrees. Dead trees can be seen on the hills above the resort.The residents of this town are concerned about destructive crown fires that may threaten their lives or property.They have petitioned you as the forest manager to have the dead trees removed. They prefer to have this done bythe quickest means possible.What information can you provid

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