Population size, Density, and Dispersion

Explore population size, density, and dispersion! Learn how scientists measure and understand populations in their environments.

A group of the same species living in and area describes a(n) population community ecosystem What species is commonly tested using the following sampling techniques in Missouri? Hair snares Black Bears Aircraft Ducks Tracking scat River otters Electrical currents Fish Each hula hoop on your "picture in time" lab represented a(n) _ transect quadrant census organism As you increased the number of hula hoops numbers, you increased the _ sample size trials If we were to test the same area the same way over many different days, we would be increasing our sample size trials Our picture in time, Population Size Lab, would have been improved by... Using birds that fly because they migrate Using plants instead of animals because plants don't move Using animals that are easy to trap Using plants instead of animals because plants do photosynthesis The number of organism per unit area describes _. How organisms organize themselves in their environment describes _. population density, population dispersion population density, population growth population dispersion, population density population, population density Which scenario describes the most crowded population?A. 500 organisms in 100 square milesB. 300 organisms in 50 square milesC. 1000 organisms in 500 square miles C; because it is the greatest number of organisms A; because it has the greatest population density B; because it has the greatest population density C; because it has the lowest population density B; because it has the lowest population density If this method of estimating a population size was used to sample a population around a body of water, what might be the problem with this scenario? It will not cause a problem with your population estimation organisms will be uniformly distributed around the source of water if they need it to survive your population estimate might be smaller than it actually is if water is a resource this organism needs to survive your population estimate might be larger than it actually is if water is a resource this organism needs to survive If you find 5 crabs in a 5 acre quadrant, How many would you expect to find in 300 acres? 5 150 300 1500 clumped dispersion when a population of elephants are gathered around their young for protection when a population of trees is growing in a valley due to an abundance of water cities were originally built around sources of water to allow for transport of goods; consequently, that is where most people lived wolves hunt in packs uniform dispersion when birds spread out evenly due to nesting space requirement the type of distribution that will give the most accurate data on the picture in time method of estimating population size random dispersion organisms spread out in unpredictable patterns the wind blows seeds and they land where they happen to land You are using the mark-recapture technique to estimate population size. You go to a pond and capture a turtle and mark it. The next day, you recapture the same turtle. Can you conclude that only one turtle lives in that pond? Select all that are true. yes no- that turtle might be trap happy (gets caught more often than others) no- your sample size is too small yes, you did 2 trials Which technique is most appropriate for each scenario? Picture in time technique works best on immobile populations use the number in an area at a single moment to estimate the population Mark-recapture uses trapping techniques leg band and paint are common methods takes a longer period of time since organisms must be released and recaptured works best on mobile populations