Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Chapter 44, Problem 18CTQ
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?
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General Patterns Found Across All Biomes
Disturbance is important in determining the set of species found in an area. Naturally, broadleaf trees will
replace longleaf pine trees, changing the forest from coniferous to deciduous. However, fire removes the
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was dominated by longleaf pine, but now broadleaf trees are found where the great coniferous forests once
grew. From this change in forest species, what do you know has happened to the frequency of fire in the
southeastern United States?
There are more forest fires in the southern United States now then there were in the past.
There are fewer forest fires in the southern United States now then there were in the past.
Desert ecosystems are fragile for which of the following two reasons?
Frequent wildfire and flooding
Rapid nutrient cycling and frost damage
Slow plant growth and low species diversity
Overpopulation of predator species and drought
Off-road vehicle traffic and deep, organic soils
Draw a typical climate diagram for a tropical rainforest. Label all parts of the diagram and describe all of the types of information an ecologist could glean from such a diagram. Now draw a climate diagram for a desert. How does it differ from your rainforest climatograph, and what does this tell you about how the two biomes differ?
Chapter 44 Solutions
Biology 2e
Ch. 44 - Figure 44.10 How might turnover in tropical lakes...Ch. 44 - Figure 44.12 Which of the following statements...Ch. 44 - Figure 44.21 In which of the following regions...Ch. 44 - Which of the following is a biotic factor? wind...Ch. 44 - The study of nutrient cycling though the...Ch. 44 - Understory plants in a temperate forest have...Ch. 44 - An ecologist hiking up a mountain may notice...Ch. 44 - Which of the following biomes is characterized by...Ch. 44 - Which of the following biomes is characterized by...Ch. 44 - Where would you expect to find the most...
Ch. 44 - A key feature of estuaries is: low light...Ch. 44 - Which of the following is an example of a weather...Ch. 44 - Which of the following natural forces is...Ch. 44 - Ecologists often collaborate with other...Ch. 44 - The population is an important unit in ecology as...Ch. 44 - Compare and contrast ocean upwelling and spring...Ch. 44 - Many endemic species are found in areas that are...Ch. 44 - The extremely low precipitation of subtropical...Ch. 44 - In what ways are the subtropical desert and the...Ch. 44 - Scientists have discovered the bodies of humans...Ch. 44 - Describe the conditions and challenges facing...Ch. 44 - Compare and contrast how natural- and human...Ch. 44 - Predict possible consequences if carbon emissions...
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- 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_forwardDeserts and semidesert scrub cover about the same amount of surface area as tropical rain forests but contribute less than 1% of Earth’s primary production, while rain forests contribute 22%. Explain this difference.arrow_forwardWhich of the following ground cover conditions contributes to the highest loss of topsoil and moisture? grasslands Otilled soil woodlands grain cropsarrow_forward
- There are many theories that explain why there is higher species richness in the tropical rainforest than the temperate forests. Provide two biotic factors and two abiotic factors explanation.arrow_forwardThe 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?arrow_forwardForests of the northeastern and middle Atlantic United States, which have broad-leaf hardwood trees that lose their foliage annually, are called (a) temperate deciduous forests (b) tropical dry forests (c) boreal forests (d) temperate rain forests (e) tropical rain forestsarrow_forward
- Match the description to the appropriate biome desert 1. Permafrost is a characteristic 2. Largest terrestrial biome on Earth chaparral Vertical layering is most 3. pronounced tropical rain forest Dominated by shrubs in midlatitude 4. coastal regions coniferous forest Seasonal and daily temperature 5. variability with very low tundra precipitationarrow_forwardWhich of the following BIOTIC influence or potentially determine the vegetation biome of a terrestrial region? Grazing Amount of rainfall Mean temperature/length of growing season Mean temperature/length of growing seasonarrow_forwardRiparian”refers to plant communities occurring:a.in the tropics.b.at high altitudes.c.along the edges of deserts.d.in permanently flooded areas.e. in transitions between riverbanks and uplandareas.arrow_forward
- Describe the seasonal patterns of the tropical savanna biome.arrow_forwardIdentify the coldes, driest biome with relatively little or relatively small vegetation. The plants in this biome have characteristically short "growth habits," meaning that species like willows and other trees may be only a few inches tall. Desert Temperate rainforest Savanna Tropical rainforest Tundraarrow_forward(a) 10% Woody Cover (b) R-0.24 8 P=0.01 5 20 30 50 Years After Abandonment 10 0 0 00 0 0 30 35 40 Degrees Latitude 45 50 30 R-0.34 P<0.01 50% Woody Cover Years After Abandonment 10 20 30 50 5 8 30 35 40 Degrees Latitude 45 In eastern Ohio, most climax communities are forest, defined as having a closed canopy (75%-100% cover) allowing very little light to penetrate to the ground.2 By the end of the study in 2000, is it likely that this old field site (at 40°N) had reached the relative stability of a climax community? (the study began in 1950) A. No. Most forest communities take at least 100 years to reach 75% cover. B. No. According to the graphs, the old field will be at ~50% coverage after 50 years. C. Yes. Unless the area has been disturbed again, it should stay stable after 10% cover. D. Yes. At 40° latitude, over 50% of the old fields were above the stability line on the graph. O A B OC ODarrow_forward
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