have on industry R&D priorities (and invention profile for that matter). Figure 7 illustrates a performance-time curve for overall domestic refrigerators and the effect of 1993 Standards legislation. Not all of this overall efficiency improvement results from improvements in compressor performance.)

▫An r-strategist is generally a small organism. ▫Short life span. ▫Produces many offspring. ADD: r/k strategist chart to EOC NB. Population Dynamics.

Lincoln Index. Write the formula for the Lincoln Index. P = N. 1 x N 2 R. Where P = total population size. N. 1 =the size R and k strategies 1. Topic 2: Ecosystems 2.6 Changes 2.6.3 - 2.63: r and K strategiesTwo general types of life strategies can be identiﬁed for most organisms • r = growth rateEquilibrium or K strategy species (a species -not the individual - is at carrying capacity K)Opportunist or r strategy species (a species exists in the exponential phase of ofpopulation growth r) 7.

They show high mortality at the beginning phases of their life. If we plot a survivorship curve for an r-strategist, it is apt to take the form of the curve labeled D. Although humans are not r-strategists, the higher birth rate in some countries may well be a response to their higher rates of infant mortality (curve B). They have efficient means of dispersal to new habitats. For r-strategists, alleles that enhance Survivorship curves for three species. Species A Species B, and Species C. Y-axis (Number surviving) is log scale. r-strategists are most likely to have survivorship curves like the one labeled: (select one) Species A O Species B Species Question 38 1 pts Carrying capacity MacBook Air 30 888 F4 DI FS Do 11 F2 3 4 5 CO 6 7 8 8 9 0 Survivorship Curves Legend: Type 1: K strategist, mortalities are low in early life but are more likely later in life Type 2: In Between k and r strategist, always has a constant percent of mortality Type 3: R strategist, young are more susceptible to mortality, and individuals living past have a higher survivorship Survivorship curve examples. Bat survivorship curves 1 10 100 1000 1 3 5 7 9 11 13 15 17 19 Age (years) Log survivorship Desmodus rotundus females Eptesicus fuscus males Q. Refer to the diagram of the survivorship curve. R-strategists.

by a type I survivorship curve; by a type II survivorship curve; by a type III survivorship r-selected and K-selected species both have limitations in the amount of

r-strategist and generalist. K-strategist and specialist. r-strategist and specialist.

R and k strategies 1. Topic 2: Ecosystems 2.6 Changes 2.6.3 - 2.63: r and K strategiesTwo general types of life strategies can be identiﬁed for most organisms • r = growth rateEquilibrium or K strategy species (a species -not the individual - is at carrying capacity K)Opportunist or r strategy species (a species exists in the exponential phase of ofpopulation growth r)

III survivorship curve. The black rhino is a K. K-selected species because it provides no parental care.

Propose an organism that would have a Type 2 curve. Survivorship curves for a r-strategist species would correspond with which graph or graphs below.
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• K-selected species are used to stable habitats while r-selected are used to chaotic ones. Survivorship Curves Survivorship curves are graphed curves that depict a species’ ability to survive adversity, depending on where they are in their life, ranging from birth to old age. For animals there are three types, Type 1, Type 2, and Type 3. Type 1 curves are the more typical of populations in which most mortality occurs among the Survivorship curves and r and k strategists: K-strategists are slow growing and produce few, large offspring that mature slowly.
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Many r-selected species tend to be opportunists, meaning that they reproduce and disperse rapidly when conditions are favorable or when a disturbance opens up a new habitat or niche for invasion. This could occur in the early stages of ecological succession. Once their

The names r and K come from a mathematical model of population growth, which is typically a sigmoid curve. For small populations, growth is exponential as Some characters for r-strategist listed in table below.

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A survivorship curve is basically a graph that shows the number of individuals of a species or a particular group that survive at each age. In simpler words, it traces the decline of a group of individuals over time. Survivorship curves help us to determine various evolutionary strategies of different species.

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