Ecosystem Interactions and Dynamics Quiz
48 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What environmental factor primarily influences wildebeest migration patterns?

  • Availability of food resources
  • Presence of predators
  • Temperature changes
  • Rainfall patterns (correct)
  • During which months do wildebeest herds predominantly occupy the southern Serengeti?

  • December to April (correct)
  • May to August
  • September to November
  • January to March
  • Which region do wildebeest spend the least amount of time in, according to the information provided?

  • South
  • North (correct)
  • West
  • East
  • What challenge do wildebeest face in the western region during June and July?

    <p>Predators and anthrax disease</p> Signup and view all the answers

    What happens to the migration pattern of wildebeest as they seek food?

    <p>They follow a clockwise pattern through the Serengeti.</p> Signup and view all the answers

    What does BTB turn to when carbon dioxide is taken OUT of the solution?

    <p>Green</p> Signup and view all the answers

    Which of the following is true about the plants wrapped in aluminum foil?

    <p>They acted as a control group with no light.</p> Signup and view all the answers

    Which ecosystems were studied for their carbon sink effects?

    <p>Cambodia, California Redwoods, Australian Eucalyptus Forest, and Amazon Rainforest</p> Signup and view all the answers

    What was a common factor affecting carbon release in various ecosystems?

    <p>Fires and increasing temperature</p> Signup and view all the answers

    What color indicates a high concentration of carbon in BTB?

    <p>Yellow</p> Signup and view all the answers

    What causes a natural population to increase?

    <p>More births than deaths</p> Signup and view all the answers

    Which of the following is a primary factor affecting population size?

    <p>Food availability</p> Signup and view all the answers

    Which organism uses energy from the sun to create food?

    <p>Plant</p> Signup and view all the answers

    What is the main objective of the 30x30 initiative?

    <p>To protect 30% of the planet's oceans, lands, and freshwaters by 2030</p> Signup and view all the answers

    Which of the following best defines limiting factors?

    <p>Conditions that restrict the growth of a population</p> Signup and view all the answers

    What role do decomposers play in an ecosystem?

    <p>They break down once-living things to retrieve energy</p> Signup and view all the answers

    Which factor is critical for the wildebeest population's growth?

    <p>Amount of grass available for grazing</p> Signup and view all the answers

    Which of the following statements is true about consumers?

    <p>They must consume other organisms for energy</p> Signup and view all the answers

    What kind of organization is the Serengeti National Park recognized as?

    <p>A UNESCO World Heritage site</p> Signup and view all the answers

    Which of the following is an abiotic limiting factor?

    <p>Weather</p> Signup and view all the answers

    During which months does calving season occur in the Serengeti?

    <p>January to February</p> Signup and view all the answers

    What significant event occurs in June for the herds in the Serengeti?

    <p>They arrive at the Grumeti River crossing</p> Signup and view all the answers

    Why are wildebeest considered a keystone species in the Serengeti?

    <p>They provide essential nutrients through their dung</p> Signup and view all the answers

    What happens to the dung beetle population if the kori bustard is removed?

    <p>It significantly increases due to lack of predation</p> Signup and view all the answers

    What form of competition do wildebeest engage in during migration?

    <p>With grasshoppers for grass</p> Signup and view all the answers

    Which river do the herds cross from Tanzania into Kenya in July?

    <p>Mara River</p> Signup and view all the answers

    How do wildebeest and zebras interact during their migration?

    <p>Wildebeest eat shorter grasses while zebras eat taller grasses</p> Signup and view all the answers

    What effect does removing grass from the ecosystem have on wildebeest?

    <p>They may migrate to find more grass</p> Signup and view all the answers

    In which month do the herds typically return to the Serengeti from the Masai Mara?

    <p>November</p> Signup and view all the answers

    What is one challenge that the Serengeti faces in terms of development?

    <p>Proposal for a new road</p> Signup and view all the answers

    Which group is NOT considered an interest holder in the development of a road connecting park areas?

    <p>Rainforest animals</p> Signup and view all the answers

    What is the primary product of cellular respiration?

    <p>ATP energy</p> Signup and view all the answers

    How does an increase in atmospheric carbon dioxide affect the environment?

    <p>Leads to a positive feedback loop with fires</p> Signup and view all the answers

    Which process directly takes in carbon dioxide and produces oxygen?

    <p>Photosynthesis</p> Signup and view all the answers

    What role do trees play with respect to atmospheric carbon dioxide?

    <p>They act as a carbon sink.</p> Signup and view all the answers

    Which statement about peat formation is accurate?

    <p>Peat captures carbon over hundreds of years.</p> Signup and view all the answers

    During cellular respiration, which two compounds are primarily produced?

    <p>Carbon dioxide and water</p> Signup and view all the answers

    What happens when forests are burned?

    <p>Atmospheric carbon dioxide increases.</p> Signup and view all the answers

    How do consumers, like animals, contribute to the carbon cycle?

    <p>They release carbon dioxide through respiration.</p> Signup and view all the answers

    What effect does an increase in forest size have on atmospheric CO2 levels?

    <p>It lowers CO2 levels.</p> Signup and view all the answers

    What causes zombie fires to burn in the melted peat?

    <p>Higher temperatures resulting from climate change</p> Signup and view all the answers

    What was observed regarding yeast cellular respiration at various temperatures?

    <p>Yeast performed significant respiration at warm temperatures</p> Signup and view all the answers

    How does peat burning compare to other carbon sources like wood?

    <p>Peat smolders for a long time and releases more carbon</p> Signup and view all the answers

    What happens to the color of BTB when carbon is taken out during photosynthesis?

    <p>It turns blue</p> Signup and view all the answers

    Which temperature condition led to minimal yeast respiration in the experiments?

    <p>Cold temperature</p> Signup and view all the answers

    What effect does increased temperature on decomposers have on the permafrost layer?

    <p>Decomposers facilitate carbon release from melted peat</p> Signup and view all the answers

    What is the significance of the tilt of the Earth’s axis on photosynthesis back in history?

    <p>It determined the efficiency of photosynthesis</p> Signup and view all the answers

    Which plant condition led to only minor photosynthesis observed in the experiments?

    <p>Indirect light exposure</p> Signup and view all the answers

    Study Notes

    Ecosystem Interactions and Dynamics

    • Natural populations fluctuate, grow, and shrink.
    • Population increase (growth) occurs when births exceed deaths.
    • Population decrease (shrink) occurs when deaths exceed births.
    • Population size is influenced by food availability, reproductive success, predator numbers, extreme weather, and habitat/climate change.
    • Producers use sunlight to create food through photosynthesis (e.g., plants).
    • Consumers get their energy by consuming other organisms (e.g., animals).
    • Decomposers break down dead organisms to release energy (e.g., mushrooms, worms).

    30x30 Initiative

    • This initiative aims to protect 30% of the planet's land, oceans, and freshwaters by 2030.
    • Humans conserve land and waters for various reasons.
    • Serengeti National Park is recognized as a site of outstanding universal value to humanity.

    Limiting Factors

    • Limiting factors restrict population growth.
    • These factors can be living (biotic) or non-living (abiotic).
    • Examples include space, food availability, mates, weather, predation, and disease.

    Limiting Factors of Wildebeest

    • Grass availability is a crucial limiting factor. Wildebeest migrate to find sufficient food.
    • Rainfall directly impacts grass growth, thus influencing wildebeest migration patterns.

    Wildebeest and Migration Pattern

    • Wildebeest migration tracks rainfall patterns, moving in a clockwise direction across the Serengeti.
    • Specific seasons are linked to calving, short-grass plains, and the Western Corridor.
    • Movements align with the Grumeti River crossing and the arrival in the Masai Mara.

    Keystone Species

    • Keystone species are crucial for ecosystem stability.
    • If removed, the ecosystem will change.
    • Wildebeest are a keystone species in the Serengeti.
    • Their presence impacts various other organisms (e.g., dung beetles, predators).
    • They are a food source and their dung fertilizes the land.

    Interaction Map

    • The interaction map depicts relationships between various organisms in the ecosystem.
    • It shows how they affect and depend on each other.
    • The map helps visualize interdependencies, food chains, and competition.

    What Happens if a Grasshopper Is Removed?

    • More grass would be available for other organisms like gazelles and zebras.

    What if the Kori Bustard Is Removed?

    • The dung beetle population would likely increase, as they would face less predation.

    What Happens if the Grass Is Removed?

    • Wildebeest would face a food shortage, motivating them to migrate in search of new grazing lands.

    Cellular Respiration

    • The process where oxygen and glucose produce carbon dioxide and water, providing energy for all living things.

    Photosynthesis

    • Processes where carbon dioxide and energy (sunlight) are used to create energy (ATP) and release oxygen.
    • Producers (plants) use photosynthesis.

    Peat Formation

    • Peat forms in arctic regions through the accumulation of dead, decomposed plants.
    • Peat acts as a significant carbon sink, storing carbon for thousands of years.

    Zombie Fires and Peat

    • Zombie fires are related to thawing permafrost and burning peat.
    • Peat releases massive amounts of carbon into the atmosphere, resulting in a positive feedback loop.
    • Lab investigations (with yeast) reveal how temperature influences carbon release (more at warmer temperatures).

    Carbon Sinks

    • Various locations around the globe serve as carbon sinks, capturing carbon (e.g., the Amazon rainforest, Australian eucalyptus forests, California Redwoods).
    • Fires and temperature increases cause more carbon release from these sinks.

    Arctic Cooling/Warming

    • The arctic regions previously experienced colder temperatures with low solar energy.
    • The current arctic has warming temperatures and thawing permafrost, impacting peat and leading to carbon release.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Related Documents

    Description

    Test your knowledge on the dynamics of ecosystems, including population fluctuations, growth, and the role of producers, consumers, and decomposers. Explore the significance of limiting factors and conservation initiatives like the 30x30 Initiative aimed at protecting our planet's resources. Dive deep into how these elements interact and affect biodiversity.

    More Like This

    Quiz de ecología y demografía vegetal
    5 questions
    Biodiversity and Population Dynamics
    26 questions
    Population Ecology and Dynamics Quiz
    13 questions
    Ecology and Population Dynamics Quiz
    45 questions
    Use Quizgecko on...
    Browser
    Browser