18 Ecology in Further Detail

18 Ecology in Further Detail

• The main concepts of ecology are population growth, biotic potential, life history strategies, and predator-prey relationships.
• This chapter talks about concepts such as succession, trophic levels, energy and biomass pyramids, and biogeochemical cycles.

• clumped, uniform, and random are the main types of dispersion patterns.

• Desert, taiga, temperate forest, tropical forest, tundra, and water are some of the things that come up on the AP exam.

• You should have a general understanding of the biogeochemical cycles.

• The main concepts of ecology are population growth, biotic potential, life history "strategies" and predator-prey relationships.
• The chapter will look at between- and within community interactions.
• We will discuss succession, trophic levels, energy pyramids, and biogeochemical cycles.

• In schools of fish or herds of cattle, the individuals live in packs that are separated from each other.

• Birds on a wire sitting above a highway are evenly distributed across a geographic area.

• There is a tree distribution in a forest.

• It takes into account a lot of variables.

• Each time period, offspring is produced.

• Individuals need time to reach reproductive maturity.

• Rate the number of people who move into a population.

• Rate the number of people who move out of a population.

• The size and growth rate of a population are determined by these statistics.

• A lower death rate will give a faster rate of population growth.
• A high female sex ratio could lead to more births in the population.
• The offspring can be produced at a faster rate with a short generation time.
• An age structure that consists of more individuals in the middle of their reproductive years will grow at a faster rate than one weighted toward older people.

• Food supplies, diseases, and waste produced by organisms are a few examples of limiting factors.
• As the population approaches and passes the carrying capacity, these limiting factors rear their ugly heads.
• The bubonic plague, which just stink, is one of the examples of density- dependent limiting factors.

• The population size has nothing to do with these limiting factors.
• Floods, earthquakes, and other natural disasters are examples of density-independent limiting factors.

• The S shape of the curve is caused by limiting factors that limit the size of the population.

• Natural resources, such as food, will run out eventually.

• The members of the population will have to compete for food.

• There are winners and sinners in competition.
• The population is above the carrying capacity.
• Being overpopulated will cause a rise in the death rate that will push the population back down to the carrying capacity or below.
• Resources replenish when it drops below the carrying capacity, allowing for an increase in the birth rate and decline in the death rate.
• When the population size falls below the carrying capacity, it will come back to it and even surpass it.

• Carrying capacity.

• There is a chance that when a population dips below the carrying capacity due to some major change in the environment, it may equilibrate at a new, lower carrying capacity.

• The organisms need extensive care until they are mature.
• The population was selected.

• Selected organisms need very little care after they mature.
• The population grows quickly, reproduces quickly, and dies quickly.
• The population was selected.

• The survival rates for different age groups are shown in the curves.

• Humans and other large mammals are examples of type I organisms.

• lizards, hydra, and other small mammals are examples of type II species.

• Many fishes, oysters, and other marine organisms are examples of type III organisms.

• There are a lot of species within a community.
• They are bound to interact because they share a home.
• The interactions range from positive to negative.

• One of the organisms benefits while the other is unaffected.

• Cattle egrets feast on insects that are aroused into flight by cattle.
• The birds get food, but the cattle don't.

• Both organisms benefit from the interaction.
• There is a mutualistic relationship between acacia trees and ants.

• Everything from being able to feast on the delicious sugar produced by the trees, to the trees being protected by the ants' attack on any potentially harmful foreign insects.
• A collection of organisms living as one is affected by interactions involving a lichen.
• The weight is pulled by the matter and energy created by the fungus component.

• They are doomed without each other's contribution.

• Tapeworms, which live in the gut of their hosts, are a popular example of a parasitic relationship.
• They reap the benefits of the meals their host consumes by stealing the nutrition from them.
• I and my younger brother own a PS2 console.

• Both species are hurt by this type of interaction.
• There are two major forms of competition.

• The members of the same species rely on the same resources for survival.
• Resources interact in complex ways when they become lations.

• The predator hunts the prey.
• The hunted may develop mechanisms to defend against predatory attack if they don't fight.
• The defense mechanisms developed by prey are described in the next section.

• It is warning coloration adopted by animals that have a chemical defense mechanism.
• The predator has grown cautious of bright color animals due to the fact that prey of a certain color have sprayed the predator with a chemical defense in the past.

• The potential for an alarm system to be encountered when attempting to steal a car is a factor that may deter a person from doing so.

• An example of this is a beetle.
• There is a chance that the beetle is a bee.

• It is similar to camouflage worn by army soldiers.
• The terrain is harder to see if you look like it.

• Some insects have designs on their wings that look like large eyes, making them look more imposing than they really are.

• The faster the negative association is made, the more dangerous the prey is.

• There is a reduction in the predator population when the prey population decreases.
• The predator runs low on a valuable resource needed to survive.
• As the predator population declines, more of the prey are able to survive and reproduce, which leads to an increase in the population of the prey.
• As the prey population density increases, the predator has enough food to sustain a higher population, and their population density returns to a higher level again.
• Unless there is a dramatic environmental change, this pattern will continue.

• Imagine that the hunted prey learns a new character trait that will allow it to better evade the predator.
• The predator needs to evolve so that it can catch its victim and eat.

• The local composition of species is affected by changes over time.
• Primary and secondary succession are two major forms of succession.

• The pioneer species does grunt work to improve the volcanic rock until the future species take over.
• Animals are drawn in by the presence of new plant life as the plant species come and go.
• The animals contribute to the area's development with the addition of waste.

• Plants develop when their roots are under the water and their leaves are above the water.
• As these plants cover the entire area of the pond, the debris continues to build up, transforming the once empty pond into a marsh.

• The marsh becomes a swamp when enough trees are in the area.
• If the conditions are good.

• This type of succession is different from primary succession because there is already soil on the terrain when the process begins.

• The individuals of the community and the Big Idea 2.A.1 environment in which they exist are part of the Ecosystem.
• Organisms are either producers or consumers.

• Chapter 8, Photosynthesis, describes the producers of the world.

• There are two types of autotrophs: photosynthetic or chemo input of energy.

• Heterotrophs are the consumers of the world.
• They can get their energy by consuming other living things.
• Decomposers are people who consume dead animal and plant matter, but then release the nutrients back into the environment.
• The subcategory includes organisms that break down.

• There is another hierarchy for you to remember.

• The pyramid shows the decrease in energy level.

• The primary producers make up the first level.

• The primary and secondary carnivores eat each other to create distribution.

• This is an important explanation of how trophic levels work.
• Energy is lost from each level of the food chain as it progresses higher, so there are only four or five trophic levels.

• The energy pyramid is only one type of ecological pyramid that you might see on the AP Biology exam.

• The knowledge you need to score high is reviewed.
• The pyramids vary from one community to another.
• The base of the pyramid is the primary producers and tends to be the largest.

• The number of mem interactions among bers of that level is represented by each box in the pyramid.
• The highest consumers in the chain tend to be large, resulting in organisms and with their environment smaller number of individuals spread out over an area.

• The bugs are eaten.

• Food webs know that bugs are eaten by more than one spider.
• Food webs show all the various relationships between food.

• If you read through the list, you will be able to add some knowledge to an essay on ecological principles.

• Deserts that don't get enough rain will have no life.
• Plants such as cacti seem to have adjusted to desert life and have done well in this area, given enough time.

• During the heat of the day, much of the wildlife in deserts is nocturnal and conserves energy and water.
• Due to the fact that water moderates temperature, this biome shows the greatest daily fluctuations in temperature.

• The Savanna soil tends to be low in nutrition.
• The savannas of this planet are home to many of the grazing species of this planet.

• Gymnosperms are the main plant life in this biome, which is characterized by lengthy cold and wet winters.

• In regions that experience cold winters, the plant life is not active and the warm summers provide enough water to keep large trees alive.

• The soil is considered to be one of the most fertile.
• The biome gets less water than the savannas.

• In lowland areas that have dry seasons, they tend to be dry forests, whereas near the equator they can be rainforests.
• A thick cover of tall trees blocks the light from reaching the floor of the forest, where there is little growth.
• The greatest diversity of species can be found in tropical rainforests.

• This prevents plants from forming deep roots in the soil and dictates what type of plant life can survive.
• The plant life that tends to be the most popular is short shrubs or grasses.

• The movement of elements, such as nitrogen and carbon, from organisms to the environment and back in a continuous cycle is represented by these cycles.
• You should understand the basics if you want to become a master of these cycles.

• The building block of organic life is carbon.
• CO2 is present in most of the carbon in the atmosphere.
• Plants contribute to the carbon cycle by taking in carbon and using it to make sugars.
• Animals send the carbon back to the atmosphere when they die.

• Nitrogen is important for plant growth.
• Plants are the only source of nitrogen for animals.
• Nitrogen can be found in the organisms' remains when they die.
• Decomposers break down nitrogen in the organisms.

• The earth is wet.
• The water evapo goes back to the clouds each day.
• The water is returned to the earth in the form of precipitation.

• B is growing rapidly.

• A lizard has a chemical defense mechanism.

• Populations tend to be small.

• Offspring needs exten D. Cryptic coloration.

• The organisms were selected.

• Large quantities of D. Offspring are produced.

• The offspring were selected.

• This is the driest area of the land.

• C. Oysters are found in shrubs or grasses.

• For questions 13-16, please use the following answer forests.

• The population shown in this age structure of the planet that produce energy through the chart is growing rapidly because of the movement of electrons in oxidation reactions.

• The age of rabbits is approaching 0.
• This shows a pop declining to the point where the foxes are starting ulation that has a high birth rate and a reasonable to feel the reduction in their food supply.

• The revival of the rabbits can be traced back to the dominant form of carbon present.

• The community and environment are dependent on density- dependent limiting factors.
• There are examples of density dependent uals of the same species.

• The nitrogen gas is copied by an animal.

• The animal kingdom's success isCryptic coloration.

• The producers blend in and hide from their enemies.

• Two species that are amatically colored extensive postnatal care until they have suffi as an indicator of their chemical defense have matured.
• The anism mimics each other's color scheme and produces many offspring per birth.

• Lizards follow a type II survivorship curve.
• This is shown in the diagram in question 12.

• The defense mechanism follows a type III survivorship adopted by animals that have a chemical curve.

• You should read the chapter for more information.