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eco evol 3 test

gotelli ahh test

TermDefinition
H1 Habitat Diversity Hypothesis - more differing habitats leads to more different niches leads to more species coexisting
H2 Productivity Hypothesis - idea that increasing biomass and species richness at the bottom of a food chain increases species richness at higher levels -"bottom up control"
H3 Keystone Predator Hypothesis
H4 Niche Adjustment Hypothesis (3) 1. expand resource axis 2. increase resource specialization 3. increase tolerance of overlap
H5 Intermediate Disturbance Hypothesis
0<r^2<1 0(random shotgun pattern) < correlation effect < more perfectly falling data to linear relationship
Keystone predator predator that increase prey species diversity by preferentially eating the competitive dominant - sea stars prefer to eat mussels
top down control determine control of species (john addicott with pitcher plant mosquito top predator and protazoa prey
hypothesis of species richness 1. habitat diversity 2. productivity 'bottom-up control' 3. Keystone predator 'top-down control' - adding more predation may add/decline 4. Niche adjustment hypothesis 5. Intermediate Disturbance - system reset 6. larger area -> more species
Darlington Rule for oceanic islands, each 10x (ten fold) increase in island area leads to a doubling of species richness S=cA^z S= # species c = constant represents y-intercept on graph A= area z= slope line in log-log plot "ur a darlington by 10 tend, u scAz!
orchipelago set of islands
HA Random Sampling Hypothesis - # of individuals that accumulate on an island is proportional to island area
HB Habitat Diversity Hypothesis - Large areas --> holding more habitats --> more niche space
HC Equilibrium Theory of island biogeography (Macarthur-Wilson equilibrium model)
dN/dt=B-D+I-E becomes... dS/dt+I-E, where I = immigration (birth of a population) and E= extinction (death of population)
P species # of species in mainland area
I= mx immigration rate =... number of 'new' species colonizing island/time (per unit time)
E=max extinction rate =... number of species on the island going extinct/time -is no species on island, nothing can go extinct!
ds/dt =0 means... rate of immigration = rate of extinction
S (hat) =
Created by: user-1995820
 

 



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