BackGeneral Biology - Ecology Fundamentals
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1/22BackSkip to main contentBackWhat is the root meaning of the word 'Ecology'?
Ecology comes from Greek roots: 'eco' or 'oiko' means house, and 'logy' means study. So ecology is the study of our house or environment. How do ecologists scientifically define ecology?
Ecology is the scientific study of interactions between organisms and their environment, focusing on how these interactions determine distribution and abundance. What is the key focus in ecological studies?
The key focus is on interactions between species, individuals, and their environment. How is ecology different from environmental science?
Ecology studies organism-environment interactions broadly, while environmental science focuses specifically on human interactions with the environment. What distinguishes conservation biology from ecology?
Conservation biology studies threats to biodiversity and mitigation strategies; it may use ecology but is a separate scientific field. What is environmentalism in relation to ecology?
Environmentalism is a social ideology aimed at preventing environmental degradation by humans, not a scientific study like ecology. What are the main scales studied in ecology?
Ecology studies levels from individual organisms, populations, communities, ecosystems, landscapes, to the global scale. What two criteria are critical when studying scale in ecology?
Pattern (observed natural phenomena) and process (mechanisms explaining patterns) are critical criteria. What is the first step in the scientific method used in ecology?
The first step is to ask a question about ecological phenomena. What is a hypothesis in ecological research?
A hypothesis is a testable question formulated to explain observations, including null and alternative hypotheses. What methods are commonly used to study ecology?
Ecologists use surveys, experiments, and modeling following the scientific method. What are field surveys best at identifying in ecology?
Field surveys are best at identifying patterns but not necessarily the processes behind them. Why does correlation not imply causation in ecological surveys?
Because two variables may correlate without one causing the other; experiments are needed to test causation. What are the three requirements for ecological experiments?
Experiments require manipulation of variables, replication to ensure reliability, and randomization to avoid bias. What is a marine reserve in ecological research?
A marine reserve is a no-take protected area where species extraction and habitat modification are prohibited. What was the main hypothesis tested in the marine reserve experiment?
That increased density of large predatory fish in reserves leads to higher predation pressure and affects juvenile fish survival. How were predation effects tested in the marine reserve study?
Using mesocosm experiments with tanks simulating different predator densities and measuring juvenile fish survival. What was the result of the marine reserve mesocosm experiment?
Juvenile fish survival was highest with no predators, lower with non-reserve predator density, and lowest with reserve predator density. What is selective mortality in the context of the marine reserve study?
Selective mortality means certain fish traits influence survival under predation, leading to differences in which juveniles survive. What role does modeling play in ecological studies?
Modeling predicts patterns based on processes and requires assumptions and data from surveys and experiments. What are some major ecological concepts covered in this course?
Organisms are interconnected, matter is conserved, populations have growth limits, species interactions are vital, resources are finite, evolution and time matter, and space affects conditions. Why is it important to study ecology?
To understand organism interactions, predict environmental changes, sustainably use resources, discover innovations, and appreciate nature.
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