In this blog you will find the correct answer of the Coursera quiz Ecology: Ecosystem Dynamics and Conservation Coursera Week 5 mixsaver always try to bring the best blogs and best coupon codes
Module Five: What have you learned?
Fragmentation refers to:
- the disappearance of an entire ecosystem
- the accumulation of substances (such as pesticides or other chemicals) in an organism
- the subdivision of a formerly contiguous landscape into smaller units, usually a product of habitat loss
- when an environment is modified to the extent that a particular organism can no longer survive there
A consequence of the warming climate is that:
- The mosquitoes that transmit malaria, Zika, and dengue fever are shrinking their range.
- Some plants are blooming earlier in the season, but their pollinators and/or the species that use those plants as a critical food resource, are still arriving later in the season.
- Coral reefs are becoming more able to absorb the calcium carbonate they need to maintain and grow their skeletons.
- An increased amount of mercury is ingested by marine species.
Lions in Gorongosa National Park are targeting smaller prey (e.g., warthog), despite recovering herbivore populations. A systems thinker might ask:
- How will this shift change the behavior of the prey species?
- Will there be cascading effects or feedback loops that will affect lion recovery or the larger Gorongosa ecosystem?
- Is pride size being limited by a preference for smaller prey?
- All of the above
The degree of ownership, engagement, and commitment on the part of local, national, or even international stakeholders…
- is not important to consider when creating a Protected Area
- is not nearly as important as the quality of science being conducted in a Protected Area
- can determine the long-term success or failure of Protected Areas
- is the the same for each Protected Area
Some opponents of E.O. Wilson’s “Half-Earth” proposal favor a “Whole Earth” approach that:
- includes ambitious restoration and rewilding programs
- dramatically reduces the human ecological footprint through technology
- increases the percentage of protected areas covering the Earth’s surface
- tackles the roots of environmental degradation
The following is an example of the “novel ecosystem” approach:
- eradicating brown tree snakes in Guam
- preventing the spread of zebra mussels to the Hudson River
- allowing cedar stands to grow in the Galápagos
- all of the above
In its recovery, the Gorongosa ecosystem has changed from one dominated by ____________________ to one dominated by ____________________.
- buffalo; waterbuck
- buffalo; reedbuck
- wildebeest; waterbuck
- waterbuck; buffalo
What factors might be affecting the recovery of Gorongosa’s lion population?
- invasive species
- woodland expansion
- interspecies competition
- prey composition and/or abundance
In her lecture, Dr. Porzecanski highlights several reasons why humans should be considered part of many ecosystems. Which of the following are examples of how we are part of the system?
- As living organisms, humans are part of biodiversity.
- Ecosystems have shaped human evolution and culture.
- Humans affect ecosystems in profound ways.
- All of the above
Today, the Amazon rainforest stands on soil that was manipulated by people thousands of years ago through their land use practices. Because of this fact, Dr. Sterling suggests that:
- We need to question our definitions of natural and pristine and realize humans are part of nature and need to be incorporated into conservation.
- If the Amazon can recover from past human disturbance, it will recover from present human disturbance.
- The Amazon is not pristine habitat to be considered important for conservation.
- The Amazon cannot be considered natural because of past human influence.
- Ecology: Ecosystem Dynamics and Conservation Coursera Week 1
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