eavers, large members of the rodent family in North America, are
often referred to as “ecosystem/keystone engineers” by wildlife
managers. Ecosystem engineers are described as animals that
create, alter, or destroy a habitat. Beavers contribute to river
ecosystems by bringing down old and dead trees along riverbanks.
They use these trees to make their dams. Although these dams
are primarily used for protection and food storage, scientists report
that these dams change the surrounding environment in different
ways.
Given this information, in three to five sentences, describe a
potential benefit that beavers contribute to the ecosystem as
keystone engineers and describe a plausible impact that the
removal of beavers could have on the surrounding ecosystem.