Example where they some finches better diet than others. Ones with better diet had more colorful beaks and were chosen by females. What is genetic drift and what is an example of how it could occur? Any change in allele frequencies in a population due to chance How does population size determine the influence of genetic drift? population = faster drift Objective questions and answers (Exam 6) What is the central goal of ecology? Ecology is the study of how organisms interact with their environment. The central goal of ecology is to understand the distribution and abundance of organisms. How many individuals are there, where are they located and why. What topics are covered in the 6 subfields of ecology? Organismal Population Community Ecosystem Landscape Global Ecology Ecology Ecology Ecology Ecology Ecology Physiological, Factors that Interactions Energy flow, Factors Regional evolutionary, affect between chemical controlling exchange of behavioral population species; cycling. An exchanges of energy, ecology size, how and effect of ecosystem energy, materials, Subdisciplines why it disturbance consists of all materials, across the are changes on groups of the organisms biosphere. physiological through species. organisms in across How do ecology time. Focuses Focuses on a particular ecosystems. changes in (investigates on groups of why some region, along What is the one area of how interbreeding areas are with relationship the organisms are individuals species rich nonliving, or between affect other physiologically (same while others abiotic spatial regions? adapted to species in are species components. patterns and How do their same area at poor. Studies Study how ecological human environment) same time). how species nutrients and processes? activities and Includes composition energy move What is the influence behavioral studies of and among and interaction atmospheric ecology (how species community between among chemistry? the behavior interactions. structure organisms pattern, How does of an Predation, change over and the process and energy use individual competition, time, surrounding scale? How relate to organism parasitism particularly atmosphere do global contributes to and after and soil or ecosystems climate survival and mutualism. disturbance. water. interact? change?
Example where they some finches better diet than others. Ones with better diet had more colorful beaks and were chosen by females. What is genetic drift and what is an example of how it could occur? Any change in allele frequencies in a population due to chance How does population size determine the influence of genetic drift? population = faster drift Objective questions and answers (Exam 6) What is the central goal of ecology? Ecology is the study of how organisms interact with their environment. The central goal of ecology is to understand the distribution and abundance of organisms. How many individuals are there, where are they located and why. What topics are covered in the 6 subfields of ecology? Organismal Ecology Population Ecology Community Ecology Ecosystem Ecology Landscape Ecology Global Ecology Physiological, evolutionary, behavioral ecology Subdisciplines are physiological ecology (investigates how organisms are physiologically adapted to their environment) and behavioral ecology (how the behavior of an individual organism contributes to survival and Factors that affect population size, how and why it changes through time. Focuses on groups of interbreeding individuals (same species in same area at same time). Includes studies of species interactions. Predation, competition, parasitism and mutualism. Interactions between species; effect of disturbance on groups of species. Focuses on why some areas are species rich while others are species poor. Studies how species composition and community structure change over time, particularly after disturbance. Energy flow, chemical cycling. An ecosystem consists of all the organisms in a particular region, along with nonliving, or abiotic components. Study how nutrients and energy move among and between organisms and the surrounding atmosphere and soil or water. Factors controlling exchanges of energy, materials, organisms across ecosystems. What is the relationship between spatial patterns and ecological processes? What is the interaction among pattern, process and scale? How do ecosystems interact? Regional exchange of energy, materials, across the biosphere. How do changes in one area of the affect other regions? How do human activities influence atmospheric chemistry? How does energy use relate to global climate change?