ecology - kocwcontents.kocw.net/kocw/document/2014/gacheon/leedoohyung... · 2016. 9. 9. ·...
TRANSCRIPT
![Page 1: Ecology - KOCWcontents.kocw.net/KOCW/document/2014/gacheon/leedoohyung... · 2016. 9. 9. · Ecology . Lecture 14 . Doo-Hyung Lee . Department of Life Sciences, Gachon Univ. Chapter](https://reader035.vdocuments.net/reader035/viewer/2022071112/5fe78f6d025cd33d665c6b16/html5/thumbnails/1.jpg)
Ecology Lecture 14 Doo-Hyung Lee Department of Life Sciences, Gachon Univ.
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Chapter 5
• Birth & Death
• Movement: Dispersal & Migration
• Population Dynamics
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All questions in ecology can be reduced to attempts to understand the distributions and abundances of organisms, and the process that determine distribution and abundance.
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Population is a group of individuals of one species.
+ -
Birth Immigration
Death Emigration
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Semelparity vs. Iteroparity
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Monitoring Birth and Death: Life Tables
1) Cohort Life Table
2) Static Life Table
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Cohort Life Table
Basic Reproductive Rate
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Classification of Survivorship Curves
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Patterns of Distribution
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Patterns of Distribution
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Density-dependent Dispersal
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Migration
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Population is a group of individuals of one species.
+ -
Birth Immigration
Death Emigration
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Effects of Intraspecific Competition on Population Growth
Number of flowering plants / 0.25 m2
Num
ber o
f see
ds /
plan
t
Density-dependent
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Three mathematical ways to express population growth
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Carrying Capacity (K)
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Intrinsic Rate of Natural Increase (r)
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r & K
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Net Recruitment Curves
# Birth minus # Death
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5.6. Life History Patterns Trade-off
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5.6. Life History Patterns
엄친아는 '엄마 친구의 아들' 또는 '엄마친구아들'의 줄임말로 대한민국에서 유행하는 용어이다. 고정된 의미는 없으나 주로 여러가지 조건을 갖춘 완벽한 남자의 은유로 사용된다. 사용 빈도가 늘어나면서 점차 일반 명사화되었다.[1]. 여성형은 엄친딸이다. '어머니들이 생각하는, 무엇이든지 잘 하고 완벽한 조건을 갖춘 이상형의 남자'[2] 를 뜻하거나 '모든 것이 나보다 뛰어난 자'[3], '아무리 노력해도 이길 수 없는 존재[4]'를 의미하기도 한다. 유명 연예인들 중 외모에 덤으로 학벌을 겸한 경우를 엄친아라고 부르기도 한다
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5.6. Life History Patterns
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5.6. Life History Patterns
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5.6. Life History Patterns
1991: 28.38 (M) 25.58 (F) 2012: 32.44 (M) 30.24 (F)
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r-species vs. K-species
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r-species vs. K-species
Organisms that live in stable environments tend to make few, "expensive" offspring. Organisms that live in unstable environments tend to make many, "cheap" offspring.
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r-species vs. K-species
r-species K-species
Organism size
Energy to reproduce
# Offspring
Maturity timing
Parental care
Life expectancy
Survivorship pattern
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r-species vs. K-species
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r-species vs. K-species
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Interspecific Competition
Chapter 6
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Chapter 6: Interspecific Competition
• Intro
• Ecological effects of interspecific competition
• Evolutionary effects of interspecific competition
• Interspecific competition and community structure
• How significant is interspecific competition in practice?
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The possible and actual consequence of competition
• What a process can do – What Interspecific competition is capable of doing
• What a process does do – What Interspecific competition actually does in
practice
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6.2. Ecological effects of interspecific competition
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6.2. Ecological effects of interspecific competition
More efficient exploiters exclude less efficient ones
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6.2. Ecological effects of interspecific competition
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6.2. Ecological effects of interspecific competition
Competitive advantage determined by temp-dependent
aggressive behavior
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6.2. Ecological effects of interspecific competition
Fundamental Niche vs.
Realized Niche