If you wanted to protect diverse species in coastal marsh, you should identify the right habitat by fınding a bed of grass underwater but near the shore an area of land that is periodically covered by saltwater O a deep, fast-moving river a flat, grassy area that is elevated above sea level so that it stays dry except during floods an area with dense mangroves

If you wanted to protect diverse species in coastal marsh, you should identify the right habitat by fınding a bed of grass underwater but near the shore an area of land that is periodically covered by saltwater O a deep, fast-moving river a flat, grassy area that is elevated above sea level so that it stays dry except during floods an area with dense mangroves

Aquaculture Science

3rd Edition

ISBN:9781133558347

Author:Parker

Publisher:Parker

Chapter13: Aquatic Structures And Equipment

Section: Chapter Questions

Problem 9SA

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The extremely low precipitation of subtropical desert biomes might lead one to expect fire to be a major disturbance factor; however, fire is more common in the temperate grassland biome than in the subtropical desert biome. Why is this?
Tree Rings Reveal 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 27.22). FIGURE 27.22 Annual precipitation record for 2,129 years, inferred from compiled tree ring data in El Malpais National Monument, New Mexico. Data were averaged over 10-year intervals; the graph correlates with other indicators of rainfall collected in all parts of North America. PDSI, Palmer Drought Severity Index: 0, normal rainfall; increasing numbers mean increasing excess of rainfall; decreasing numbers mean increasing severity of drought. A severe drougt contributed to a series of catastrophic dust storms that turned the midwestern United States into a "dust bowl" between 1933 and 1939. One of the worst population catastrophes ever recorded occurred in Mesoamerica between 1519 and a.d. 1600, 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?
Why is the tundra treeless? a. lack of sufficient water b. permanently frozen ground c. winters too harsh d. too many fires
The extremely low precipitation of subtropical desert biomes might lead one to expect fire to be a major disturbance factor; however, fire is more common in the temperate grassland biome than in the subtropical desert biome. Why is this?
Figure 44.12 Which of the following statements about biomes is false? Chaparral is dominated by shrubs. Savannas and temperate grasslands are dominated by grasses. Boreal forests are dominated by deciduous trees. Lichens are common in the arctic tundra.
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?
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?
____________ have a deep layer of humus-rich topsoil. a. Deserts c. Rain forests b. Grasslands d. Seamounts
Which of the following biomes is characterized by abundant water resources? deserts boreal forests savannas tropical wet forests
A key feature of estuaries is a. low light conditions and high productivity b. salt water and fresh water c. frequent algal blooms d. little or no vegetation
Soil in _______ is richest in carbon. a. the arctic b. the tropics c. temperate zones
Which of the following statements is supported by the results of studies at the Hubbard Brook Experimental Forest? a. Most of the energy captured by primary producers is lostbefore it reaches the highest trophic level in an ecosystem. b. Deforested watersheds experience significantly less runoffthan undisturbed watersheds. c. Deforested watersheds lose more calcium and nitrogen inrunoff than undisturbed watersheds. d. Nutrients generally move through biogeochemical cycles veryquickly. e. Deforested watersheds generally receive more rainfall thanundisturbed watersheds.