Ecological Succession
what is the main difference between primary and secondary succession
primary starts with bare rock, secondary starts with soil
animals moving from one place to another seasonally is called what?
migration
A species who's presence or absence can be used to determine the health of an ecosystem
indicator species
When comparing two islands, one 5km away and one 30 km away, which island would likely have more biodiversity?
The island closer to the mainland (5km away)
recreation and scenic areas for tourism are examples of what type of ecosystem service?
cultural services
plant or animal species that has a disproportionally large effect on its environment relative to its abundance
keystone species
This type of disruption occurs during seasonal changes
periodic natural disturbances
when an organism is pushed outside its range of tolerance, what are it's three options?
migration, adaptation, extinction
How does the size of an island affect its biodiversity?
smaller size = less biodiversity
larger size = more biodiversity
an organism that is not indigenous, or native, to a particular area.
what is one thing the Endangered Species Act of 1973 allows for?
Protection of endangered species, conservation of species habitat,
Hurricanes happen during a certain time of the year and are known to reoccur. What type of natural disturbance is this?
What is episodic natural disturbances
Define ecological tolerance
a set of conditions that an organism thrives under
How does biodiversity affect the resiliency of an ecosystem?
more biodiverse= more likely to survive bc variety of species
less biodiverse= not likely to survive due to low species variation
examples of disruptions of ecosystem service by an anthropogenic activity
increase air pollution because of burning fossil fuels
habitat loss, deforestation, pollution ect.
pioneer species
This type of disturbance has no predictable quality, like a meteor hits the earth and starts an ice age.
random disturbance
What are examples of environmental stressors/ natural disturbances?
wildfires, hurricanes, tornadoes and flooding
what is one reason why an island ecosystem might be less diverse than an ecosystem on the mainland?
islands are limited by size/resources
mainlands are easier to migrate to and have more space
utilizing trees for their lumber is an example of what type of ecosystem service?
provisioning services
What is it called when a community reaches its most productive state
climax community
time and size
Example of abiotic conditions that affect the ecological tolerance of a species
temperature, salinity, flow rate and sunlight
explain how keystone species and trophic cascades are related
keystone species have a large effect on their ecosystems, and can impact multiple trophic levels thus causing a trophic cascade
give an example of a regulating service
water cycle, pollination, clean air, decomposition