Title: Unit 5 Quiz
Course: BIS 205 Field Ecology - Copy > Section: BIS 205 Field Ecology - Copy

Q: Joseph Cornell studied two barnacles, Chthamalus stellatus and Balanus balanoides, and found resistance to desiccation was important in determining where each species was found, as well as
- competition
- predation
- salinity
- pheremones
- dispersal
A: competition

Q: Researchers have identified a general pattern of increased body mass associated with increased population density.
- True
- False
A: False

Q: The Eurasian collared dove range has drastically shrunk throughout the 20th century and is at risk of extinction.
- True
- False
A: False

Q: Which of the following factors are a part of Rabinowitz's classification of commonness and rarity? (select all that apply)
- habitat tolerance
- local population size
- geographic range
- evolutionary relatedness
- colonization cycle
A: habitat tolerance; local population size; geographic range

Q: Creosote bushes can have clumped, random, and regular distributions at different periods of it life.
- True
- False
A: True

Q: Soares, Baird, and Calow explored partioning of variation in water fleas (Daphnia magna). Identify what were the two main causes of variation in their results. What impact did increased concentrations of DCA have on the per capita rate of increase?

Q: In a ______ distribution, individuals are more likely to be found in some areas than others.
- clumped
- random
- regional
- regular
- divided
A: clumped

Q: Given the following information, calculate the generation time.

R_0 = 0.723

r = -0.045

∑xl_xm_x = 5.2

m_x = 1.12
- 7.19
- 115.56
- 4.64
- 3.76
- 5.2
A: 7.19

Q: A group of individuals of a given species inhabiting a specific region is called a
- community
- ecosystem
- population
- biome
- niche
A: population

Q: Humans would best be represented by which survivorship curve?
- Type I
- Type II
- Type III
- Type IV
- exponential
A: Type I

Q: A [_____] defines the physical conditions that a species could possibly live in without any interacting species.
A: fundamental niche

Q: In mark-recapture population estimation, a loss of tags from individuals would result in an underestimate of population size.
- True
- False
A: False

Q: Which of the following are mismatched?
- R_0 : net reproductive rate
- x : age/time interval
- m_x : offspring produced during interval
- l_x : survivorship
- n_x : mortality rate
A: n_x : mortality rate

Q: The movement of an individual out of a local population is known as [_____]
A: emigration

Q: Which of the following equations best represents the per capita rate of increase?
- r = (ln R_0)/T
- r = T/(ln R_0)
- λ = N_t/( N_t+1)
- λ = (N_t+1)/N_t
- R_0 = Σl_xm_x
A: r = (ln R_0)/T

Q: Population density is defined as
- the number of individuals in a population
- the abundance of individuals.
- the spatial arrangement of organisms in an area
- the number of individuals per unit area
- None of the above
A: the number of individuals per unit area

Q: A group of subpopulations living in spatially isolated patches connected by exchange of individuals among patches is called a(n)
- micropopulation
- megapopulation
- metapopulation
- natural population
- intrinsic population
A: metapopulation

Q: A Type II survivorship curve indicates
- low juvenile mortality and high adult mortality
- high juvenile mortality and low adult mortality
- low juvenile mortality and low adult mortality
- consistent mortality throughout lifetimes
- high juvenile mortality and higher adult mortality
A: consistent mortality throughout lifetimes