Q: Daniel Janzen (1981a, 1981b) proposed that the seeds of
Daniel Janzen (1981a, 1981b) proposed that the seeds of the Guanacaste tree were once dispersed by several species of large mammals that became extinct following the end of the Pleistocene about 10,00...
See AnswerQ: Biological interactions may also affect lake systems. How does the recent
Biological interactions may also affect lake systems. How does the recent history of the Great Lakes suggest that the kinds of species that inhabit a lake influence the nature of the lake environment...
See AnswerQ: How could you test the generalization that lake primary production and the
How could you test the generalization that lake primary production and the composition of the biota living in lakes are strongly influenced by the availability of nutrients such as nitrogen and phosph...
See AnswerQ: According to the river continuum model, the organisms inhabiting headwater streams
According to the river continuum model, the organisms inhabiting headwater streams in temperate forest regions depend mainly upon organic material coming into the stream from the surrounding forests....
See AnswerQ: How might oxygen concentration of interstitial water be related to the grain
How might oxygen concentration of interstitial water be related to the grain size of the sand or mud sediment? How might the oxygen concentrations of tide pools in sheltered bays compare to those on t...
See AnswerQ: How do classical approaches to genetic studies, such as common garden
How do classical approaches to genetic studies, such as common garden experiments, and modern molecular techniques, such as DNA sequencing, complement each other? What are the advantages and disadvant...
See AnswerQ: How might a history of exposure to wide environmental fluctuation affect the
How might a history of exposure to wide environmental fluctuation affect the physiological tolerances of intertidal species compared to close relatives in sub tidal and oceanic environments? How might...
See AnswerQ: Most examples of regional and latitudinal variation in species richness cited in
Most examples of regional and latitudinal variation in species richness cited in this chapter have been terrestrial. Consider regional variation in marine biotas. Like birds on land, fish are one of t...
See AnswerQ: Ricklefs (1987) pointed out that many large-scale contrasts
Ricklefs (1987) pointed out that many large-scale contrasts in species richness and composition cannot be explained by local processes such as competition and predation. Ricklefs proposed that differe...
See AnswerQ: Explain how speciation and extinction rates might be affected by the area
Explain how speciation and extinction rates might be affected by the area of continents. What evidence is there to support your explanation? What does the influence of area on rates of extinction and...
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