+ At least a few individuals are still present. No individuals are still present. The species may soon go extinct. The population is beginning to shrink in size. Decreasing numbers may be the result of habitat loss. The species will be protected by the Endangered Species Act. The species may recover if it is protected. Threatened Endangered

+ At least a few individuals are still present. No individuals are still present. The species may soon go extinct. The population is beginning to shrink in size. Decreasing numbers may be the result of habitat loss. The species will be protected by the Endangered Species Act. The species may recover if it is protected. Threatened Endangered

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter19: Population And Community Ecology

Section: Chapter Questions

Problem 2ACQ: Figure 19.6 If the major food source of seals declines due to pollution or overfishing, which of the...

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Which of the following communities would be most resilient to the removal of 1 species? a community where the top predators have many food sources, but the primary consumers do not a community where the primary consumers have many food sources, but the top predators do not a community where each organism is the only food source of another organism a community where every organism has multiple food sources
explain the following Effects of wild life depletion Unbalanced food chain and ecosystem Reduction in rare wild animals Danger to human life Impact on biodiversity Loss of economic value Loss of genetic information
What do restocking programs for wild animals involve? Releasing individuals into an existing population to increase the size of the population and the diversity of its gene pool Releasing wild-collected individuals into a new site Releasing captive-bred individuals into a new site Releasing captive-bred or wild-collected individuals into an ecologically suitable site within their historical ranges where the species no longer occurs
The per capita growth rate of a population where dispersal is not a factor is expressed as (a) i + e (b) b d (c) dN/dt (d) rN(K N) (e) (K N) K
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Figure 19.6 If the major food source of seals declines due to pollution or overfishing, which of the following would likely occur? a. The carrying capacity of seals would decrease, as would the seal population. b. The carrying capacity of seals would decrease, but the seal population would remain the same. c. The number of seal deaths would increase, but the number of births would also increase, so the population size would remain the same. d. The carrying capacity of seals would remain the same, but the population of seals would decrease.
Figure 45.10b If the major food source of the seals declines due to pollution or overfishing, which of the following would likely occur? The carrying capacity of seals would decrease, as would the seal population. The carrying capacity of seals would decrease, but the seal population would remain the same. The number of seal deaths would increase but the number of births would also increase, so the population size would remain the same. The carrying capacity of seals would remain the same, but the population of seals would decrease.
The population size of a species capable of being supported by the environment is called its ________. a. limit b. carrying capacity c. biotic potential d. logistic growth pattern
ENDANGERED ANIMAL is CA least tern bird 1-3 bases on the bird Reasons for Endangerment Explain the various factors that have led to this species’ current plight. Expand on these points individually, based on your species’ unique story. Domino Effects As we’ve learned, species are not islands unto themselves; they are integrated with many other organisms in trophic relationships, mutualisms, competition, etc. How is the absence of this species (or its lowered population size) likely to impact the other members of its habitat? (If findings specific to this point are available, please include them – otherwise, I’m asking you to speculate based on what you’ve learned about the biology of this organism.) Conservation Efforts Discuss past, current, and proposed efforts to conserve this species. Are these strategies effective? Are they realistic? What is the outlook for this organism?
What level of disturbance allows the greatest coexistence among species? Y At what level of disturbance is interspecific competition the greatest? X Many #Species in Community Few Low X Y Level of Disturbance High N
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There are always more top predators than there are primary consumers within an ecosystem. True False