I Can Statement Conversation/Assignment

Transcription

1 I Can Statement Conversation/Assignment B6.1 and B3.6 I can Explain how the interrelationships among organisms (including predation, competition, parasitism, mutualism, and commensalism) generate stability within ecosystem Illustrate the flow of energy through ecosystem (including food chains, food webs, energy pyramids, number pyramids, and biomass pyramids.

2 Complete the food chain and identify the following: What is the primary source of energy? Secondary consumer? Herbivore? Which would be considered a producer?. Another name for a producer is. How are food webs different from food chains?. Which tropic level has the largest total amount of energy available to other organisms? Where would you find herbivores? Autotrophs? Top carnivores? Apply knowledge and match examples: Word Bank: Competition, Predation, Commensalism, Parasitism, Mutualism, Niche - Ostriches and gazelles feed next to each other. They both watch for predators and alert each other to danger. Because the visual abilities of the two species are different, they each can identify threats that the other animal would not see as readily. - A flea feeds on a mouse s blood to the mouse s detriment. - when sunlight is limited, forest trees grow rapidly to tower over other plants to absorb more sunlight - bees make honey, pollinate flowers, and drink nectar - Hermit crabs live in shells made and then abandoned by snails. - During breeding season, salmon return from the ocean will swim up stream to span. As they make their journey, many are eaten by grizzly bears.

3 I Can Statement Conversation/Assignment H.B.6A. Conceptual Understanding: Ecosystems have carrying capacities, which are limits to the numbers of organisms and populations they can support. Limiting factors include the availability of biotic and abiotic resources and challenges such as predation, competition, and disease. H.B.6A.1 Analyze and interpret data that depict changes in the abiotic and biotic components of an ecosystem over time or space (such as percent change, average change, correlation and proportionality) and propose hypotheses about possible relationships between the changes in the abiotic components and the biotic components of the environment I can... identify the characteristics of an ecosystem including biotic and abiotic factors. Define the following in your own words: Ecosystem- Biotic factor- Abiotic factor- In the below chart, circle the biotic factors and place an X next to the abiotic factors. Whale Clock Water Fish Paper Glass Aluminum Wooden Ruler Sand Clouds Corpse Snail Steak Pork Chops Salad Bread Plant Ice Tree Pipe Cotton Fabric Wool Gold Plastic Grapes Air Snow identify how ecosystems change. identify the characteristics of a stable ecosystem use data to analyze the effect of changing biotic and abiotic factors on an ecosystem. What characterizes a stable ecosystem?

4 Below is a diagram depicting change of two populations (moose and wolves) over time. What pattern(s) do you notice? What do you think this means? Predict what happened to both populations after this graph was created. Support your conclusion. Below is a diagram depicting change of a spider population over time. What pattern(s) do you notice? What do you think this means? What may be reasons for this change due to biotic factors? What may be reasons for this change due to abiotic factors? Why is it important for fluctuations to happen in an ecosystem? A change in an abiotic or biotic factor may the size of a population if the population cannot acclimate or adapt to or migrate from the change. A change may the size of a population if that change enhances its ability to survive, flourish or reproduce.

5 H.B.6A.2 Use mathematical and computational thinking to support claims that limiting factors affect the number of individuals that an ecosystem can support. I can... identify the characteristics of a population of organisms. identify population density. calculate population size and/or density. Define the following in your own words: Populations- Population Density- Populations can be described based on their size, density, or distribution. What impacts the size of a population? Population density is calculated by dividing the number of individuals in a population by the unit area. The size of a population is affected by the number of births, the number of deaths, and the number of individuals that enter or leave the population. L 32 ft A 22.5 ft Calculation the population density of our classroom. Area 1 (Parallelogram): L * W W 21 ft 1 2 B 44 ft H 29 ft Area 2 (Trapezoid): [(a +b)/2 ]* H Population Density: number individuals/(area 1 + 2)

6 identify limiting factors including density dependent and density independent factors. Any factor that slows population growth is called a limiting factor. Population growth is regulated by limiting factors that can be density- dependent, density- independent, abiotic or biotic. Word Bank: density dependent factor, predation, weather and climate, density independent factor, disease, abiotic factors, large in size, regardless of size analyze population growth models and graphs including exponential and logistic growth. define carrying capacity. Carrying capacity is the maximum number of individuals that the environment can support over a long period of time without harming the environment What is the carrying capacity of the deer population to the right?

7 3 2 1 Population Growth Models Describe the exponential growth model in regards to population size. What type of shape did it make? In real populations, exponential growth occurs only for limited periods of time when conditions are optimal and resources are unlimited. What do you expect to happen when resources become limited? What type of shape did it make? Describe the logistic growth model in regards to population size. Phase 1: Phase 2: Phase 3:

8 I Can Statement Conversation/Assignment H.B.6C. Conceptual Understanding: A complex set of interactions within an ecosystem can keep its numbers and types of organisms relatively stable over long periods of time. Fluctuations in conditions can challenge the functioning of ecosystems in terms of resource and habitat availability. H.B.6C.1 Construct scientific arguments to support claims that the changes in the biotic and abiotic components of various ecosystems over time affect the ability of an ecosystem to maintain homeostasis. I can compare and model primary and secondary succession. locate examples of pioneer species like lichens and moss. Ecological succession is the sequence of changes in an ecosystem that regenerate a damaged community or create a community in a previously uninhabited area. There are two types of succession, primary and secondary. Place the ponds to the right in order as it is replaced with a field. Explain how primary succession leads to a climax community. The beginning of primary succession depends on the presence of unique organisms that can grow without soil and also facilitate the process of soil formation. What is the first group of organisms to colonize an area without soil called? Examples. Explain how secondary succession leads to a climax community. How are primary and secondary succession alike? Why does primary succession take longer than secondary succession? What is an example of a location where primary succession would occur? Secondary succession?