In the British Columbia forest industry, there has been a history of cutting large areas (clear cutting) for timber, then replanting these areas with lodgepole pine and hybrid white spruce. Based on your understanding of "climax communities", explain the potential impact of these practices on forest biodiversity in BC
What will be an ideal response?
Ans: The main impact of these practices would be that the lodgepole pine and the hybrid white spruce would eventually dominate the community. Sometimes when this occurs a new species can even join, but that is only in rare cases. The two new trees will remain stable until a disturbance happens to the environment that ends up destroying it. This would allow for new species to eventually invade
You might also like to view...
Being born with extra fingers on a hand is called polydactyly. This is more common in some populations in North America than others due to ____.
A. natural selection in favor of extra fingers in these populations B. random mating with other populations in North America C. an increase in mutation rate in these populations D. a founder effect because their ancestors from Europe carried the alleles E. migration of people with multiple fingers out of the population
DNA methylation
A. increases transcription. B. inhibits transcription. C. increases crossover events. D. decreases crossover events. E. promotes post-translational modification of proteins.
People who have received the BCG immunization will generally have a negative tuberculin skin test.
Answer the following statement true (T) or false (F)
A person with an XO genotype is classified as having
A) Down syndrome. B) cri du chat syndrome. C) Turner syndrome. D) Klinefelter syndrome. E) a poly-X state.