Biology Ecological Succession WebQuest
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succession
a series of events by which life comes back
it increases for a while, but then decreases
according to the graph, what best describes what occurs to the amount of grasses in the graph
competition for light and resources with grasses
according to the graph, what best explains the decrease in the mass of mosses
biodiversity increases through the process of succession
biodiversity is the variety of life in an area. think about the process of succession. how does biodiversity change during succession
its bare rock, no soil or life
describe the features of the volcanic island after it cools
they dig into the soil to extract water and nutrients
describe the roots of grasses
they don't have roots
do mosses have roots
plants come first because animals rely on them for food production
do plants or animals come first in succession? why?
birds drop them onto the island or the wind carries them
how do flowering plants come to the island
they are dropped by birds onto the islands
how do grass seeds come to the island
they break down rocks and soil
how do lichen alter the abiotic environment to favor the establishment of other species of plants
1. lichens and smaller plants produce soil that allows larger plants to grow 2. large trees produce shade and compete for resources with smaller plants, causing a reduction in a population
how do living things alter the biotic and abiotic environment to cause the process of succession
they use structures called rhizoids
how do moss anchor onto things
they continue to build up the amount of soil to help succession
how do mosses help succession
they produce waste products so the soil can be fertile
how do primary consumers benefit plants
they control the population of the primary consumers
how do secondary consumers help the ecosystem
they steal the water, nutrients, and sunlight from the soil from smaller plants
how do trees affect smaller plants
by wind or animal dispersal
how do trees enter the island
it helps them attach to the ground
how does having little soil be beneficial to moss
they arrive by being carried by wind, water, or animals
how does lichens arrive to the island
they are blown by the wind to an island
how does moss arrive to the island
grasses, mosses, lichen, and pine trees
if your area experienced a severe disturbance, what type of pioneer species do you think would emerge in your area
yes, so that life can spring back afterwards
is soil necessary for secondary succession
a pioneer species
lichens are often the first species to colonize an environment during primary succession. in general, the first species to colonize an environment is called
the plants and organisms that come back
what are climax species
herbivores
what are grasses a good source for
the survival of plants
what are pollinators critical to
forest fires, human disturbances, and radiation
what are some examples of disturbances that lead to secondary succession?
pioneer species
what are the first organisms that inhabit a barren landscape called?
primary and secondary succession
what are the two parts of ecological succession
wind birds floating vegetation
what are three things that can bring life to a barren island
they need to be pollinated by other animals
what do flowering plants need in order to reproduce
animals
what do flowering plants need to be pollinated by
they consist of both algae and fungus
what do lichens consist of
producers (plants)
what do primary consumers eat
primary consumers
what do secondary consumers eat
helps to control the population of primary consumers
what do secondary consumers help to control
they eat secondary consumers
what do tertiary consumers eat
sunlight and resources
what do the grasses outcompete the mosses for
for many types of animals
what do trees provide habitat for
they need deep soil to thrive
what do trees require in order to survive
a climax community
what does primary succession end with
barren rock with soil
what does primary succession start with
organisms that are the first to colonize an area
what is a pioneer species
the algae
what is photosynthetic
occurs when there is some kind of disturbance, but the soil still remains
what is secondary succession
primary succession is when there is there bare rock (no soil or vegetation left. secondary succession is when there is a disturbance in the environment (there is soil, but no vegetation)
what is the difference between primary and secondary succession
primary succession occurs in an area with no life and no soil but secondary succession happens in an area where an existing community was disrupted
what is the difference between primary and secondary succession?
Surtsey
what is the name of the new island that has begun succession since 1963
secondary succession
what is the process of rebuilding a community that is disrupted called
producers (plants) primary consumers secondary consumers tertiary consumers
what is the sequence from first to last from organism to a successfully colonized area
an intact ecosystem is disrupted by a natural disaster pioneer species like grasses and flowers grow bushed begin to dominate trees become common and outcompete other plants for sunlight the climax community in the are is restored once again
what is the sequence of events in secondary succession
the climax consumers
what is the stable community that will remain on your island for a very long time called
lichens mosses grasses and annual flowers bushes and shrubs trees
what order do organisms appear during primary succession
erosion/weathering wind rain
what three abiotic factors make it possible for soil to gather and build on rock landscapes
disasters such as forest fires
what triggers secondary succession on the island
flowers and bees
what two organisms have a mutualistic relationship
they need deep soil because they have deeper roots
what type of soil do bushes need? why?
mutualism
what type of symbiosis do algae and fungi have
grasses
what was the perfect pioneer species for your island
primary succession
when succession happens in a place with no life or soil, is it primary or secondary succession
only in moist areas
where can mosses live
the changes in species composition in a community over time as species colonize an area
which of the following best describes succession
all of the statements
which of the statements is true
they are a food source in many ecosystems
why are flowering plants important
because they can grow on the bare rock and they can break down rock with their acid
why are lichen a great pioneer species
they can take nitrogen from the air and put It back into the soil
why are lupine important to primary succession
because the trees that were burned down before left seeds
why are tree seeds already on the island
since there is life and soil still present
why can flowers rapidly germinate
fungus can anchor onto the rock and break it down with the acids it produces
why can lichen grow on bare rock
because there is already soil
why can your pioneer species be different in secondary succession
since they are larger and need deeper soil (they take longer to grow also)
why do bushes populate the island after grasses and flowering plants
because the soil is deep enough to support
why do grasses spread rapidly
larger plants tend to compete for resources such as space, sunlight, and soil nutrients more successfully
why do lichens and mosses get replaced by larger plant species during succession
-lichen -mosses -grasses -flowers -bushes -trees -pollinators -primary consumers -secondary consumers -tertiary consumers
List the organisms in the order that you placed the from the pioneer species to climax community on the lines below