Heirarchy
What is the smallest level in ecological heirarchy?
An organism
Identify the missing word...
Primary Producer>Primary Consumer>____>Tertiary Consumer
Secondary Consumer
What type of limiting factor is this:
As fish populations in Lake Martin grow, the dissolved oxygen levels drop in shallow waters, causing fish to die off.
Density Dependent
This type of succession starts with bare rock.
Primary
Define supporting services.
these services make all others possible. Ex. Photosynthesis, soil formation ect
Give 2 examples of abiotic factors in a pond ecosystem.
What is missing in the following food chain.
Sun>Berries>Squirrels>Eagles
Decomposers
What type of factor has an increasing impact as the population size increases?
Density Dependent
List 2 examples of when primary succession could happen now.
Receding glaciers, new lava flow
What type of ecosystem service would medicine fall under?
Provisioning.
We watched two videos about biosphere 2. What was biosphere 1?
Earth.
How much energy is lost between each trophic level?
90%
Define carrying capacity
the maximum amount of organisms of a specific species that an ecosystem can support
This type of succession has soil intact.
Secondary succession
In biosphere 2, initially the oxygen dropped and scientists had to pump in more oxygen. What type of ecosystem service was not being met. Explain your reasoning for that answer.
Provisioning-plants provide oxygen through photosynthesis and this was not happening enough.
This ecological level contains all biotic and abiotic factors and the interactions there.
Ecosystems
What is the most realistic example that shows the flow of energy in an ecosystem.
A food web
List the three types of population growth graphs. Which is the most realistic?
Linear, exponential, logistic, logistic is most realistic.
What type of succession happens in an old uncultivated farm
Secondary
Explain how native plants in Baldwin County, such as live oak trees, are better at regulating services than non native plants, like centipede grass.
Native plants are adapted to the environment/climate/common weather. Examples such as erosion control, the live oak has deeper roots that hold on to more soil. This means soil is less likely to wash away in river flooding events. Centipede grass has much shallower roots, therefore, it cannot regulate erosion in floods.
This ecological level contains all biotic factors in an area.
Community
Explain why rich biodiversity makes an ecosystem more stable.
An ecosystem with more species allows it to withstand changes easier. If there are many types of producers and one goes away, the ecosystem will easily survive compared to ecosystems with only a few species.
Explain why invasive species are detrimental to an ecosystem.
They have no natural predators and an abundance of resources. Therefore they decimate the resources in an area without any limiting factors.
Explain one reason why we no longer focus on fire suppression.
1. Some plants and animals are adapted to require fire for survival.
2. Frequent low intensity fires prevent major/disastrous fires by reducing leaf litter and clearing brush.
List an example of how trees can provide one of each ecosystem services.
1. Provisioning-Fruit, medicine, clean air, timber
2. Regulating-erosion control, carbon sequestration
3. Cultural- totem poles, aesthetics, art, education ect
4. Supporting-photosynthesis