Diversity and Interdependence of Life Flashcards
Corals need 10 to 15 years to recover from a bleaching event. The graph shows the frequency of the number of years between severe bleaching events split between 1980– 1999 and 2000–2016.
Based on the data, what conclusion can you draw about coral bleaching when comparing years 1980–1999 to 2000–2016?
The time between severe bleaching events decreases to about half the time needed for recovery
B.DI.3
Corals need 10 to 15 years to recover from a bleaching event. The graph shows the frequency of the number of years between severe bleaching events split between 1980– 1999 and 2000–2016.
Prediction what will occur if climate change continues to warm ocean waters.
The trend in severe bleaching events will continue until bleached coral makes up most of the reef and diversity declines in the ecosystem
B.DI.3
Ospreys are predatory birds that typically nest in open, high places. Scientists monitor the open nests of a native osprey population in an estuary habitat affected by human activities. The scientists observe the naturally occurring feeding relationships in the osprey ecosystem, as shown in the table.
Describes a possible effect of the introduction of the eagle into the osprey ecosystem
Osprey will produce fewer eggs in each breeding season.
B.DI.3
European hedgehogs are small mammals covered in quills. They live across Western Europe and the British Isles. The graph shows the trend in the population size over time of European hedgehogs throughout the British Isles.
How can the trend in the hedgehog population affect the species’ survival?
It can lower the genetic diversity in the hedgehog population, which may lead to extinction over time.
B.DI.1
What is species richness?
The number of different species in an area.
B.DI.3
What is one possible explanation for the decrease in global species richness?
Land development for increased agriculture.
B.DI.3
Fill in the blank: Some species produce toxins that accumulate in the _______.
Food web.
What does a loss of greater than 20% of species in an ecosystem affect?
Ecosystem services.
What is the primary diet of European hedgehogs?
Beetles, worms, caterpillars, slugs, and other invertebrates.
What is the role of phytoplankton blooms in the ocean ecosystem?
Provide energy for other producers.
What is one reason for biodiversity loss in ecosystems?
Increased commercial fishing to meet population needs.
True or False: The number of invasive species increases as a result of more favorable temperatures.
True.
What type of data do scientists use to identify differences among species?
Nucleotide differences
The table shows the nucleotide differences among five species of shrimp.
What does a cladogram represent?
The evolutionary relationships among species
Cladograms are used to visually represent how species are related based on genetic data.
After introducing a predator that prefers red fish, what is the predicted trend for the frequency of red fish in Tank 2?
Negative slope
The introduction of a predator affects the population dynamics of the fish.
Fill in the blank: Scientific names help scientists understand how different species are _______.
related.
Scientific names provide a standardized naming system that reflects evolutionary relationships.
What is a potential long-term effect of a drastic reduction in the bison population?
The ability of the recovering population to adapt to new selection pressures will be limited.
This is due to reduced genetic diversity following a population bottleneck.
Which statement supports the idea that the bison population’s genetic diversity is affected?
A decrease in variation within the gene pool of the recovering population.
This reflects the consequences of a population bottleneck.
What could explain the change in reindeer population over time?
The island’s resources could not sustain the reindeer population.
This indicates that the carrying capacity was exceeded, leading to population decline.
What was the estimated population of Antarctic fur seals before intensive hunting?
Between 160,000 and 180,000 seals
This population size drastically decreased due to hunting.
What is the new carrying capacity of the ecosystem for the Antarctic fur seals after recovery?
Between 8100 and 8900 seals
This reflects the sustainable population size after conservation efforts.
What does the term ‘carrying capacity’ refer to?
The maximum population size that an environment can sustain
It is determined by resource availability and environmental conditions.
Which species in a food web is likely to experience the greatest biomagnification of pesticides?
Hawks
Biomagnification occurs as toxins accumulate up the food chain.
What happens to the deer population size during time B in a protected forest preserve?
Increase
The addition of land to the preserve allows for greater resources and habitat.
