Environmental Science

Size: px

Start display at page:

Download "Environmental Science"

Irene Leonard
6 years ago
Views:

1 Environmental Science Monday, January 25, 2016 Do)Now:& Intro.(to(Semester(Two ( 1. Write(down(today s(flt( 2. What(do(we(study(in(environmental(science?(( If(you re(not(sure,(make(a(guess.( 3. Do(you(think(humans(have(a(responsibility( to(help(the(environment?((why(or(why(not?( 4. What(grade(do(you(hope(to(achieve(this( semester?(( 5. IdenJfy(what(you(are(going(to(do(in(order(to( achieve(this(grade.((( 1&

2 Class&Reminders& New(to(class?((Sign(&(Return(Syllabus( Rule(reminders: (( Stay(in(assigned(seat( No(eaJng(or(chewing(gum(( No(electronics( Get(assignments(stamped(within(a(week( of(receiving(them( ( Planner: Ch. 8 Vocab due by Mon 2/1 Ch. 9 Vocab due by Mon 2/8 Table of Contents #5 1. Intro. to Semester Two Do-Now 2. Ch. 8 Vocab 3. Ch. 9 Vocab 2&

3 Standard HS-LS2-6: Evaluate the claims, evidence, and reasoning that the complex interactions in ecosystems maintain relatively consistent numbers and types of organisms in stable conditions, but changing conditions may result in a new ecosystem. FLT I will be able to overview the main terms in population ecology by completing Ch. 8 Vocabulary Classwork& Begin(Ch.(8(Vocabulary(( Use(worksheet(OR(flashcards((flashcard( must(have(picture(+(word(+(definijon)( Do(Ch.(9(Vocabulary(next(week( ( 3&

4 Environmental Science Tuesday, January 26, 2015 Do)Now:& Video(Notes:(PopulaJon(Ecology ( 1. Write(down(today s(flt( 2. What(is(a( populajon?((guess(if(you re(not(sure.( 3. How(big(do(you(think(the(human(populaJon(is?((( 4. In(what(city((in(the(U.S.)(would(you(find(the(largest( populajon?((guess(if(you re(not(sure.((( 5. In(what(city((world`wide)(would(you(find(the(largest( populajon?((guess(if(you re(not(sure.((( 6. Number(1`4(underneath(your(do`now,(leaving(space( Finished?))Take)out)your)planner)and)ToC.))) 4&

5 Popula?on&Facts!( As(of(July(2015,(the(world(populaJon(was( esjmated(at(7.3(billion(( New(York(City(was(esJmated(to(have(a( populajon(of(8.5(million(as(of(2014((compare( this(to(la s(3.9(million)( The(city(of(Shanghai(has(an(esJmated( populajon(of(24.3(million( Worldwide,(NYC(only(ranks(as(the(21 st (largest( city(( Annoucements& New(to(class?((Syllabus(should(be(turned(in( Reminders:(( Get(stamps( No(electronics(( Want(to(be(exempt(from(Q3(midterm?((Have( 70%+(on(each(test/project(and(have(less(than( 5(missing(assignments(before(April(6 th (( ( 5&

6 Planner: Finish WS + vocab Table of Contents #5 4. Video Notes: Population Ecology Notes A 6. Population WS A Standard HS-LS2-6: Evaluate the claims, evidence, and reasoning that the complex interactions in ecosystems maintain relatively consistent numbers and types of organisms in stable conditions, but changing conditions may result in a new ecosystem. FLT I will be able to describe the three main properties of a population by completing 8.1 Notes A 6&

7 Video&Notes& We(will(watch(the(first(half(of(the(video( before(our(notes(begin,(then(the(second( half(during(the(notes( Underneath(your(do`now,(make(sure(to( write(four(facts(from(the(video(that( you(learn( Be(prepared(to(share(out(your(facts( ( 7&

8 Video&Notes& Let s(share(some(of(our(facts!( Remember:(we(will(watch(the(remaining( secjon(during(our(notes,(so(you(can(sjll( add(facts(then( ( 8.1 Notes Noise level 0 Copy down all bolded ideas Raise your hand to question/comment Be prepared to pair-share 8&

9 8.1 How Populations Change in Size Describing Populations 9&

10 What is a population? Population = A group of the same species living in the same place at the same time Ex/ All of the wolves in Yellowstone Which is a population? 10&

11 Properties of Populations Populations may be described in terms of: Size Density Dispersion Population Size Population Size = The total number of individuals Ex/ There are 400 wolves in Yellowstone 11&

12 Which population size is bigger? Population Density Density = the number of individuals per unit area or volume Ex/ There are 0.3 wolves per square mile 12&

13 Which population has greater density? Population Dispersion Dispersion = The arrangement of individuals in a given space Ex/ Wolves are found in clumped patterns because they travel in packs 13&

14 Population Dispersion Dispersion patters may be uniform (even), clumped, or random Population Dispersion Types Clumped = organisms group together for protection or resources 14&

15 Population Dispersion Types Uniform = organisms are evenly spread out due to territoriality Population Dispersion Types Random = no pattern 15&

16 How Does a Population Grow? 16&

17 Reproductive Potential Biotic Potential The fastest rate at which a population can grow Reproductive Potential The maximum number of offspring each member can produce Reproductive Potential A species biotic potential is limited by its reproductive potential The greater the reproductive potential, the greater the biotic potential Ex/ A bacterium can produce 19 million offspring within weeks, making its biotic potential very great 17&

18 Pair-Share-Respond 1. Define the term population 2. What is the difference between population density and dispersion? 3. Identify three patterns of population dispersion 4. A flower s pollen is spread by the wind. What kind of dispersion pattern is this? 5. Distinguish between the terms biotic potential and reproductive potential. 18&

19 CW Complete the population worksheet A Finished? Work on your vocabulary! Environmental Science Thursday, January 28, &

20 Do)Now:& BrainPOP:(PopulaJons ( 1. Write(down(today s(flt( 2. In(a(savanna(region,(you(can(see(giraffes,(zebras,(and( gazelles(all(eajng(together.((is(this(a(populajon?(( Why(or(why(not?((( 3. List(the(three(panerns(of(populaJon(dispersion( 4. Choose(one(of(the(three(panerns,(and(diagram(it.((( 5. What(kind(of(populaJon(might(exhibit(this(panern?( 6. Number(1`10(underneath(your(do`now( Finished?))Take)out)your)planner)and)ToC.))) Planner: 8.1 Quiz Mon 2/1 Have assignments #1-9 stamped Table of Contents #5 7. BrainPOP: Populations Notes B 9. Population WS B 20&

21 BrainPOP:&Popula?on&Growth& Watch(the(BrainPOP(video( Aoer(the(video,(answer(the(quesJons(in( your(group( (every(member(must(copy( down(the(same(answer( The(group(with(the(most(correct( answers( (+5(dojo(points(each( hmps:// popula?ongrowth/& ( Standard HS-LS2-6: Evaluate the claims, evidence, and reasoning that the complex interactions in ecosystems maintain relatively consistent numbers and types of organisms in stable conditions, but changing conditions may result in a new ecosystem. FLT I will be able to define and diagram patterns of population growth by completing 8.1 Notes B 21&

22 8.1 Notes Noise level 0 Copy down all bolded ideas Raise your hand to question/comment Be prepared to pair-share 8.1 How Populations Change in Size 22&

23 Recall What is a population? Population = A group of the same species living in the same place at the same time Populations can be described in terms of their overall size, density, and dispersion. 23&

24 How Populations Grow How do populations grow? Populations that grow rapidly can be represented by an exponential growth model 24&

(increasingly faster) due to available resources Exponential growth can only occur

25 How do populations grow? Exponential Growth = a period of time when a population grows exponentially (increasingly faster) due to available resources How do populations grow? Exponential growth can only occur when resources such as food, space, and mates are plentiful. When these resources become limited, growth will slow or stop. 25&

26 How do populations grow? We can diagram exponential growth by plotting population size over a period of time. Exponential growth will resemble a Jshape curve. Limitations to Population Growth 26&

27 Limitations to Population Growth Can a population continue to grow indefinitely? Populations cannot grow indefinitely Limited resources or environmental changes can change growth patterns According to natural selection, only some members can survive and reproduce 27&

As resources become limited, growth slows until carrying capacity

28 Limitations to Population Growth Carrying capacity = maximum population size that can be supported by an ecosystem. As resources become limited, growth slows until carrying capacity is reached At carrying capacity, birth rates = death rates (no net growth or decrease) 28&

29 Limitations to Population Growth A population can fluctuate around the carrying capacity, but resource limitations will maintain the population size Limitations to Population Growth Limiting resource/factor = a natural resource used or consumed by the population that limits its growth Ex/ The availability of prey 29&

30 Limitations to Population Growth Members of the same population must compete with each other for resources Ex/ Plants compete with each other for light, and wolves may compete for food/territory Patterns of Population Change 30&

density-independent Patterns of Population Change Limiting factors

31 Patterns of Population Change Population growth can decrease due to limiting factors These factors may be density-dependent or density-independent Patterns of Population Change Limiting factors decrease population growth Density-dependent limiting factors depend on the population size. 31&

Patterns of Population Change Limiting factors decrease population growth Density-dependent LFs have a greater effect on large, crowded populations Examples: Competition, predation, parasitism,

32 Patterns of Population Change Limiting factors decrease population growth Density-dependent LFs have a greater effect on large, crowded populations Examples: Competition, predation, parasitism, disease Patterns of Population Change Limiting factors decrease population growth Density-independent LFs affect a population no matter the size Examples: Natural disasters, seasonal changes, human activities, unusual weather 32&

33 Pair-Share-Respond 1. What is exponential growth and what causes it? 2. If you were to diagram exponential growth, what would it look like? 3. What is a population s carrying capacity? 4. What causes a population to reach its carrying capacity? 5. Distinguish between density-dependent and density-independent limiting factors. CW Complete the population worksheet B Finished? Work on your vocabulary! 33&

Noise$level$0$ Eyes$on$your$own$paper$ You$may$use$your$vocab$if$stamped$off$ Finished?$$ 11/12/15% Planner: Get ALL stamps Complete retakes by 11/18

Noise$level$0$ Eyes$on$your$own$paper$ You$may$use$your$vocab$if$stamped$off$ Finished?$$ 11/12/15% Planner: Get ALL stamps Complete retakes by 11/18 Environmental Science Tuesday, November 10, 2015 Do(Now:% Ch.$4$Test$Day$Do.Now % 1. Write$down$today s$flt$$ 2. Draw$two$rabbits$with$different$varia>ons.$$$ 3. Describe$an$environment$in$which$rabbit$(A)$