Benstead UA
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Population: | show 🗑
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| show | size, shape, and location of the area occupied
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| Density: | show 🗑
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| show | patterns that are random, regular, or clumped.
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| Cause of spatial scales | show 🗑
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| show | ‘regular’ pattern in ‘older’ communities
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| show | clumped (due to resources like water)
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| show | Population density declines with increasing body size (inverse relation)
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| show | not static in abundance or distribution
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| show | population dynamics: births, deaths, immigration and emigration
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| Effect of dispersal on local populations | show 🗑
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| show | Juvenile
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| Three main ways of estimating patterns of survival within a population | show 🗑
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| cohort | show 🗑
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| static life table | show 🗑
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| age distributions | show 🗑
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| limitations of age distributions | show 🗑
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| survivorship curve | show 🗑
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| show | Relatively similar
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| show | survivorship curves for some species are nearly straight lines
individuals die at a constant rate throughout life
Ex. Birds and mud turtles
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| High infant mortality | show 🗑
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| Type I Survivorship Curve | show 🗑
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| show | Constant survival (linear negative line)
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| show | High juvenile and low adult mortality (sudden drop and then levels out)
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| age distribution of a population reflects its? | show 🗑
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| show | population is juvenile dominant meaning the older trees will be replaced
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| show | middle aged individuals dominant meaning that there are not enough young to replace the old
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| show | survival and age distribution with reproductive rates, we can actually make quantitative predictions about future population growth or decline
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| show | tabulation of birthrates for females of different ages in a population
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| life table combined with a fecundity schedule can be used to estimate: | show 🗑
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| net reproductive rate, R0 | show 🗑
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| show | ratio of the population size at different times
Nt+1/ Nt
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| show | the average time from egg to egg
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| show | birthrate minus death rate
value of 0 would indicate a stable population
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| Robert Whittaker | show 🗑
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| range expansion | show 🗑
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| geometric rate of increase | show 🗑
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| generations overlap | show 🗑
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| show | any population with pulsed reproduction (a single generation per year)
differ by a constant ratio (lambda,the geometric rate of increase)
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| exponential population growth | show 🗑
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| show | maximum rate of increase achieved under ideal conditions
intrinsic rate of increase
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| show | low initial population densities
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| show | geometric growth and exponential growth cannot be maintained
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| show | resources are depleted by a growing population, its growth rate slows and eventually stops
S- shaped, or sigmoidal, curve
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| carrying capacity, or K | show 🗑
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| show | very low population size
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| show | r decreases as population increases
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| show | positive and population grows
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| if N=K, r is? | show 🗑
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| N>K, r is? | show 🗑
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| abiotic | show 🗑
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| biotic | show 🗑
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| life history | show 🗑
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| Offspring number versus size | show 🗑
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| adult survival is lower | show 🗑
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| show | gonadosomatic index
measures the proportion of energy allocated to reproduction
Adult mortality rate was inversely related to age at maturity
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| higher mortality rates reproduce___? | show 🗑
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| r selection | show 🗑
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| K selection | show 🗑
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| Variable/unpredictable environments result in___? | show 🗑
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| Constant/predictable environments result in___? | show 🗑
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| semelparity | show 🗑
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| iteroparity | show 🗑
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| show | intrinsic rate of increase, competitive ability, Development rate, age at maturity and body size
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| show | species maximize their ability to colonize new habitat in unpredictable environments by combining low juvenile survival, low numbers of offspring and early maturity
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| Equilibrium | show 🗑
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| show | combines low juvenile survival, high numbers of offspring, and late maturity
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| show | dimensionless ratios to remove the effects of size and time
relative size of offspring, proportion of lifetime allocated to reproduction, and the fraction of adult body mass allocated to reproduction over the lifespan
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| show | illustrates the fundamental differences among fish, mammals, and altricial birds
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| Intraspecific competition | show 🗑
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| Self-thinning | show 🗑
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| Interspecific competition | show 🗑
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| niche | show 🗑
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| show | two species with identical niches cannot coexist indefinitely
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| show | n-dimensional hypervolume, where n equals the number of environmental factors affecting a species survival and reproduction
conditions a species would exploit in the absence of other species
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| show | species subject to biotic interactions (competition, predation, disease, parasitism)
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| morphological niche | show 🗑
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| Lotka-‐Volterra competition model | show 🗑
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| show | two terms -alpha12N2 and -alpha21N1
express the competitive effect of one species on another
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| show | he effect of an individual of species 2 on the rate of population growth rate of species 1
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| alpha21 | show 🗑
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| show | combinations of N1 and N2 at which population growth of N1 (or N2) is zero, form strait lines
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| show | species on each axis
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| show | extinction of species 1, extinction of species 2, and coexistence of the two species
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| Niche overlap and competition | show 🗑
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| character displacement | show 🗑
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| show | biological populations of the same species become isolated
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| sympatric | show 🗑
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| show | increases in fitness of one species with a decrease in fitness of the other ex. Predator-prey and parasite-host
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| show | moth used to control the cactus
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
dhmulder
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