ESC3017: Biosphere Ecology - Formation of Life and Evolution
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Questions and Answers

What is the definition of population in the context of ecology?

A group of members of a species living in the same area

Define ecology based on the provided text.

The study of all relationships among organisms and their abiotic environment

What is the focus of population ecology?

The study of how various factors affect population growth, rates of survival and reproduction, and risk of extinction

What does population size represent?

<p>The total number of individuals in a population</p> Signup and view all the answers

What does population dispersion provide information about?

<p>How species interact with each other</p> Signup and view all the answers

What are the basic mechanisms of evolution mentioned in the text?

<p>Natural selection, mutation, genetic drift, migration</p> Signup and view all the answers

What factors affect population size?

<p>Number of births, number of deaths, immigration, emigration</p> Signup and view all the answers

What type of growth is more likely in an ideal environment?

<p>Exponential growth</p> Signup and view all the answers

What environmental factors limit population growth?

<p>Density-dependent factors (competition for resources, disease, predation) and density-independent factors (natural disasters)</p> Signup and view all the answers

What is the greatest population an environment can sustain called?

<p>Carrying capacity</p> Signup and view all the answers

What are limiting factors in the context of population growth?

<p>Factors that cause population growth to slow down (e.g., food, water, sunlight)</p> Signup and view all the answers

What type of growth did the American bison population in northern Yellowstone National Park experience between 1902 and 1915?

<p>Exponential growth</p> Signup and view all the answers

When does population growth start to plateau?

<p>When the density becomes too high</p> Signup and view all the answers

What type of growth is depicted in the graph showing the explosion of human population over the last 10,000 years?

<p>Exponential growth</p> Signup and view all the answers

What type of growth do you think the human population will experience?

<p>Logistic growth</p> Signup and view all the answers

What tends to have lower population density, a species with larger body size or a species with smaller body size?

<p>A species with larger body size</p> Signup and view all the answers

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