BIO 320- Exam 1 Questions and Answers 100% Verified
7 views 0 purchase
Course
BIO 320
Institution
BIO 320
Rank-abundance curves - Plot the relative abundance of each species in a community in rank
order from most abundant to least abundant
Species Accumulation Curve - Graph of the number of species observed in relation to the number
of individuals sampled
True or false; another way to estimate the ...
BIO 320- Exam 1
Rank-abundance curves - Plot the relative abundance of each species in a community in rank
order from most abundant to least abundant
Species Accumulation Curve - Graph of the number of species observed in relation to the number
of individuals sampled
True or false; another way to estimate the number of species in an area is based on the number of rare
species detected. - True
Biodiversity is built from what 3 features? - Ecosystem diversity, species diversity, genetic diversity
Species that lack genetic diversity are? - More vulnerable to fluctuations due to climate change,
disease, and habitat fragmentation.
True or false; Counting every individual of a species is common - False
True or false; Must sample an area to estimate how many species are present? - True
True or false; One way to sample is by graphing the number of species observed as sample size
increases? - True
Formula for estimating number of species living in an area - S= Sobs+f1(f1-1)/2(f2+1)
Estimated number of species in a community... - Increases with an increase in the number of
species represented by a single individual and decreases with an increase in the number of species
represented by 2 individuals
Relative Abundance - The proportion of individuals in a community represented by each species
, True or false; most species have a hight or low abundance? - False. Most species have
intermediate abundance
Frank Preston - Developed a way to visualize patterns of variation in abundance of different
species.
Log-normal Distribution - A bell-shaped curve that uses a logarithmic scale of the x-axis
True or false; log-normal distributions of species can be found across a wide variety of communities and
taxonomic groups - True
Rank-abundance curves are useful in? - Illustrating how communities differ in species richness and
species evenness
Species Evenness - Comparison of the relative abundance of each species in a community
Greatest evenness occurs when? - All species in a community have equal abundance
Lowest evenness occurs when? - One species is abundant and the remaining are rare
Rank abundance curves allow? - The determination of which communities have the greatest
species richness and evenness, how communities differ in richness and evenness
Communities with more species and greater evenness have? - Higher species diversity
Calculate species diversity with? - Simpson's index and Shannon's index
Simpsons and Shannons index both incorporate? - Species richness and evenness but in different
ways
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller ACADEMICMATERIALS. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R149,00. You're not tied to anything after your purchase.
