Follows a major distribution such as fire or a flood. Similar to primary succession but already has soil.
How does secondary succession occur
Occurs in barren areas. First inhabitants are lichens or plants. Converts rock into soil.
How do Primary succession occur
Occurs in lifeless areas. Soil is incapable of sustaining life. Example: lava flows
Primary Succession
Ecosystem- variation in biodiversity within ecosystems on earth, genetic- variation in the genes within a population of organisms, species- number of species in a given area.
3 types of Biodiversity and describe them
The population of this graph increases quickly overtime then stops abruptly
J curve
A symbolic relationship in which one species. Benefits while the other species is harmed but not killed. Example: cows and tick
Parasitism
Any relationship between organisms of different species in which one organism is inhabited or destroyed while the other organisms remains unaffected. Example: bread and penicillin
Amensalism
A symbiotic relationship in which both species benefit. Example: clown fish and Anemone
Mutualism
A symbolic relationship in which one species benefits while the other species does not benefit but is not harmed. Example: whales, barnacles.
Commensalism
If the population goes down another species carrying capacity of another species can decrease. Example: oak trees decrease the capacity of squirrels goes down.
Negative population growth rate effect carrying capacity.
The largest population of a species that an ecosystem can support
Carry capacity
Positive means that if it increase of one thing you will affect the carrying capacity of its prey
How does a population growth rate affect the carrying capacity
A pattern of growth when the population density of an organism increases slowly in a positive acceleration then rapidly approaching growth then declines in a negative acceleration until zero growth rate
S- curve
Flows a major disturbance such as a fire or flood. Already possesses soil.
Secondary succession
The capacity of an ecosystem to recover from a disturbance without collapsing into a different stated.
Resilience
To remain unchanged when subject to a disturbance. The ecosystem maintains its normal pattern after a damage.
Resistance
Can they have offsprings, and can the offspring be fertile.
What are two questions we ask to determine if two organisms belong to the same species
Nitrogen is exchanged between biotic and abiotic factors in the ecosystem
What happens during the Nitrogen Cycle
Excretes, eaten, and absorbed
How does carbon cycle through an ecosystem