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- To discuss: The ecosystem services of forests and describe the consequences of deforestation.To describe: Some of the long-term ecological research conducted at Hubbard Brook Experimental Forest.Tree Rings and Droughts El Malpais National Monument, in west central New Mexico, has pockets of vegetation that have been surrounded by lava fields for about 3,000 years, so they have escaped wildfires, grazing animals, agricultural activity, and logging. Henri Grissino-Mayer generated a 2,129-year annual precipitation record using tree ring data from living and dead trees in this park (FIGURE 27.23). FIGURE 27.23 A 2.129-year annual precipitation record inferred from com pled tree ring data in El Malpais National Monument Now Mexico. Data ware averaged over 10-yeer intervals; graph correlates with other indicators of rainfall collected in all parts of North America. PDSI, Palmer Drought Severity Index: O, normal rainfall increasing numbers mean increasing excess of rainfall decreasing numbers mean increasing severity of drought A severe drought contributed to a series of catastrophic dust stem's that turned the rid western United States into a oust bow between 1933 and 1939. 2. One of the worst population catastrophes ever recorded occurred in Mesoamerica between 1519 and 1600 a. d., when around 22 million people native to the region died. Which period between 137 B.C. and 1992 had the most severe drought? How long did that drought last?
- Tree Rings and Droughts El Malpais National Monument, in west central New Mexico, has pockets of vegetation that have been surrounded by lava fields for about 3,000 years, so they have escaped wildfires, grazing animals, agricultural activity, and logging. Henri Grissino-Mayer generated a 2,129-year annual precipitation record using tree ring data from living and dead trees in this park (FIGURE 27.23). FIGURE 27.23 A 2.129-year annual precipitation record inferred from com pled tree ring data in El Malpais National Monument Now Mexico. Data ware averaged over 10-yeer intervals; graph correlates with other indicators of rainfall collected in all parts of North America. PDSI, Palmer Drought Severity Index: O, normal rainfall increasing numbers mean increasing excess of rainfall decreasing numbers mean increasing severity of drought A severe drought contributed to a series of catastrophic dust stem's that turned the rid western United States into a oust bow between 1933 and 1939. 1. Around 770 A. D., the Mayan civilization began to suffer a massive population loss, particularly in the southern lowlands of Mesoamerica. The El Malpais tree ring data show a drought during that time. Was it more or less severe than the dust bowl drought?The most semi deciduous vegetation of Ghana and it's characteristicsDescribe the past and present situation of the mangrove forest by researching on its biota and provide relevant information and examples. How is the mangrove forest contributing to our GDP? Explain what is the current situation there due to the famous Rampal Power Station? Lastly, how can we preserve the largest mangrove forest in the world?
- In which forest biome does the canopy permit low light penetration, and as a result, understory is limited.c) Deforestation and loss of biodiversity is a problem in many forests in different parts of the world. In no more than 400 words. discuss the effects and consequences due to deforestation and loss of biodiversity in rain forests.Given the need to lower carbon dioxide levels in the atmosphere, discuss the speaker's recommendations for the role of forests in this process. Was he specific about the composition of this forest or would any planting of trees suffice?
- . Suppose a plot of forest is cleared of trees in anticipation of a newshopping mall. However, after the bulldozers are gone, thecompany runs out of money, and the land sits undisturbed for manyyears. Describe the events that may occur in the years followingthe damage to the forest. What are these community changescalled?Mangrove Ecosystem: Oil SpillTundra Enlarge Image Taiga A biome is large regional area of similar communities characterized by a dominant plant type and vegetative structure. Traditionally, biomes have been used to describe large geographical regions such as deserts, grasslands, forests, and tundras. The tundra occurs between the taiga and the permanently frozen polar regions while the taiga zone occupies a wide belt between the tundra and the temperate forests on the American and Eurasian continents. The plant and animal populations vary in these two biomes. H Search 1) Review the images of the two biomes, the tundra and the taiga. Notice that while there are about 1,700 kinds of plants there are virtually no tree species in the tundra. What are the limiting factors in preventing the immigration of tree species into the tundra? All BUT ONE could apply. A) rocky, poor soil B) C) very short growing season the presence of permafrost D) winters are six months long 2) The taiga is the most extensive biome, stretching…
