ENVS 202 1st EditionThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.Lecture 16 Outline of Last Lecture I. Sea LevelII. Sea Level Rise AttributionsIII. PredictionsOutline of Current Lecture I. Review on Sea Level RiseII. PopulationsCurrent LectureI. Review on Sea Level RiseSea level rise is happening, evidence is clear at a rate of ~3 mm/yearCauses of sea level rise are climatic and human-induced, with large regional variationsImpacts are potentially severe, though adaptation will occurII. PopulationPopulation: group of one species in a certain areaCommunity: an assemblage of populationsEcosystem: a community and its physical environmentPopulation ecology issues:How fast will a certain species’ population increase?When should we be concerned about population size?Where is the population headed?What will the effects on the ecosystem be?Biotic potential is the maximum reproductive capacity of a population under optimum conditionsWhat variables directly affect population size?BirthsDeathsImmigrantsEmigrantsChange in population size = births – deathsWhy do populations have the capacity to grow exponentially?Total birth and death rates are proportional to population size when per capita rates are constantWhat is the rate? The ratio of two or more variables with different unitsDoubling time is only constant if the rate is
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