BIO 373 1st Edition Lecture 1 Outline of Last Lecture I. n/aOutline of Current Lecture I. Population Declinea. Case study on deformity in amphibiansII. Experimental DesignIII. Ecology MaximsCurrent LecturePopulation Decline- Case study on deformity in amphibians (1995)o 40% deformedo Deformities coincided with population declineo Ask: what causes the deformities? A hypothesis? Climate change, predator/prey interaction change, environmental factorsExperimental Design- Observational studyo Can be difficult, less conclusive if based purely on observation- Experimentationo Can be repeated, results are more definitiveo Observe, manipulate variables, replicate, collect a data set (statistics ) Replication helps eliminate random variables, confounding factors, environmental variation, etc.Ecology MaximsThese 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.- Ecology= study of interaction between organisms and environmento You can never do just one thing Everything is connected, everything has an effect on something else, different factors interacto Everything goes somewhere Flow of energy and nutrient cyclingo No population grows forever There are environmental and special limitations- Available energy versus consumptiono There is no free lunch When one thing improves, something else has to give- Inverse relationshipso Evolution matters—understanding change Survival, mutations, adaptation, natural selection- Ex: antibiotics and bacteriao Time matters Ecosystems and organisms change and grow overtimes- Changes may be cyclical, seasonal, linear- Can occur quickly or over a long period of timeo Space matters For example, temperature and precipitation over an areao Life would be impossible without species interaction Food webs, energy exchange, cycle of life,
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