3.3 Survivorship Curves

    Cards (52)

    • What are survivorship curves?
      Graphical survival rate
    • Type I survivorship curves are common in humans.
    • Survivorship curves show the survival rate of a species over its lifespan
    • Order the three types of survivorship curves based on their early-life mortality rates, from lowest to highest.
      1️⃣ Type I
      2️⃣ Type II
      3️⃣ Type III
    • Which type of survivorship curve shows constant mortality throughout life?
      Type II
    • Type III survivorship curves are common in fish and plants.
    • In Type II survivorship curves, the mortality rate remains constant
    • What type of survivorship curve is seen in birds like robins?
      Type II
    • What do survivorship curves show?
      Survival rate over lifespan
    • Type I survivorship curves show high survival rates early and mid-life, with mortality increasing sharply in old age
    • Type II survivorship curves have a constant mortality rate throughout life.
    • What type of survivorship curve is typical of many fish species?
      Type III
    • Match the survivorship curve type with its survival and mortality characteristics:
      Type I ↔️ High survival early and mid-life, increasing mortality in old age
      Type II ↔️ Constant survival and mortality throughout life
      Type III ↔️ High mortality in early life, low thereafter
    • Type I survivorship curves are commonly seen in mammals
    • Type II survivorship curves are characteristic of birds and reptiles.
    • What type of survivorship curve is typical of plants and fish?
      Type III
    • What is one factor that can affect survivorship curves?
      Predation
    • Predation reduces survival rates, especially in early life stages
    • How does poor habitat quality affect survivorship curves?
      Increases mortality
    • Disease outbreaks can drastically decrease survivorship.
    • Order the steps to apply survivorship curves in population ecology:
      1️⃣ Collect data on survival rates
      2️⃣ Graph the survivorship curve
      3️⃣ Analyze the shape of the curve
      4️⃣ Draw conclusions about population dynamics
    • What is the term for a graphical representation showing the survival rate of a species over its lifespan?
      Survivorship curve
    • Type II survivorship curves show a constant mortality rate for all ages
    • Type III survivorship curves are typical of organisms with high early-life mortality but longer survival for survivors.
    • What do survivorship curves graphically represent?
      Survival rate over lifespan
    • Survivorship curves are not useful in understanding population dynamics.
      False
    • There are three main types of survivorship curves
    • Match the survivorship curve type with its survival rate pattern:
      Type I ↔️ High survival early and mid-life
      Type II ↔️ Constant survival rate throughout life
      Type III ↔️ Low survival in early life
    • What do survivorship curves help ecologists understand about a population?
      Growth and decline factors
    • A Type III survivorship curve suggests that conservation efforts should focus on protecting early life stages.
    • Researchers apply survivorship curves to develop targeted conservation strategies
    • Arrange the steps ecologists might take when studying survivorship curves:
      1️⃣ Observe survival rates
      2️⃣ Create a survivorship curve
      3️⃣ Analyze mortality patterns
      4️⃣ Develop conservation strategies
    • What is a survivorship curve?
      Survival rate graph
    • Type II survivorship curves show constant mortality rates throughout life.
    • Type I survivorship curves are characterized by high survival rates early and mid-life, with mortality increasing in old age
    • Match the survivorship curve type with an example organism:
      Type I ↔️ Humans
      Type II ↔️ Birds
      Type III ↔️ Fish
    • What do survivorship curves show?
      Survival rate over lifespan
    • A Type II survivorship curve has a constant mortality rate throughout life
    • Organisms with a Type III survivorship curve have high mortality rates in early life.
    • Match the survivorship curve type with its survival rate pattern:
      Type I ↔️ High early survival
      Type II ↔️ Constant survival rate
      Type III ↔️ Low early survival