PPT-Density-Dependent Limiting Factors

Densitydependent something that depends on the amount of organisms in a unit area 5 examples to follow So what in the world is a densitydependent limiting factor Crowded populations mean the individuals have to compete for food water space sunlight or anything else necessary for survival and reproduction. Aas long as organisms have all of these things available to them their population will continue to grow However populations cannot grow forever Some form of environmental resistance will stop the population s growth The form of environmental resis th. -Week 10. TOPIC. : . Population Dynamics. .  . OBJ . : . 3-5. DO NOW. : . . EXT. :. Oh DEER! . DUE DATE. : . Oct 14th. DW. : . 4.1 Application Notes. -----------------------------------------------------------------------------------------------------------------. BIOLOGY. Limiting Factors . Limiting factor: . Anything that prevents a population from growing too . large. Examples? Discuss . Space (disease, predation). Sunlight. Competition (food, water, mates). 7 billion and growing. How can humans cause population decline in other species?. “As dead as a dodo”. humans . Mauritius, . dogs. pigs. cats. rats. nests, . forests. Four ways humans can cause population decline are:. Significant ideas. A species interacts with its abiotic and biotic environments, and its niche is described by these interactions.. Populations change and respond to interactions with the environment.. What affects how well a plant grows?. Starter. : why is this tree so much taller than the others?! . Success criteria . name the factors that limit plant growth.. explain how the factors limit plant growth.. ?. A large, dense population or . a small, scattered population. A small, scattered population. Two . ways a population can decrease in size?. decreased birthrate and emigration. Suppose that a species of . Size. 2. Density. 3. Growth rate. 4. Survivorship. 5. Age structure. Each population has a density, a dispersion, and a reproductive strategy.. . Populations. Population density is. a measurement of the number of individuals living in a defined space.. Page 539-549. Chapter 18 . Section 2 & 3. Identify. the characteristics that describe populations.. Examine. the different types of relationships that occur among populations in a community.. Determine. What is the . ideal combination of factors . for the . maximum . rate of photosynthesis? . enough light. . enough carbon dioxide. . ideal temperature . (not too hot or cold). How is the rate affected if one of these factors is . Factors. Remember, primary productivity of an ecosystem can be reduced by limiting nutrients. Limiting . factors can . determine carry capacity. Density Dependent Factors. Density Independent Factors. Using the graph to the right, predict what will happen to Hungary’s population.. Bell Ringer. Human Usage of Water. Why is water so important to us, and how can we preserve it?. Recall our earlier studies of the water cycle. We examined the water cycle as a means of recycling fresh water on Earth.. What is the correct level of organization (think back to the card activity from our previous class)?. a. tom. m. olecule. o. rganelle. c. ell. t. issue. organ. o. rgan system. o. rganism. p. opulation. Growth of Populations. A population is a group of organisms belonging to the same species and living within a certain area.. The number of organisms within the group is the . population size.. Under ideal conditions, unlimited food, absence of disease etc, the size of a population would increase indefinitely..