Phytoplankton

Question 1

Spring

Answer 1

rapidly growing phytoplankton, “bloom” of small flagellates and diatoms → crash, “clear water phase”

Question 2

Summer

Answer 2

phytoplankton dominated by large, green algae, dinoflagellates and cyanobacteria

Question 3

Fall

Answer 3

smaller bloom of diatoms, cyanobacteria and flagellates.

Question 4

PP VS PZ

Answer 4

PP=physical limitations
Nuterents and grazing
PZ= food limitation

Question 5

growth coefficient

Answer 5

r = k - g
K--> growth
      Nutrient ratios 
       light
      temp
      Stratification 
G-->grazing
      zooplanktion 
       prasites 
        sinking
        bio warfair

Question 5

growth coefficient

Answer 5

r = k - g
K–> growth
Nuterent ratios
light

Question 6

Plankton pop equation

Answer 6

Algal concentration-(sinking+grazing deaths+parasitism deaths+natral deths)

Question 7

grazing factors

Answer 7

Defenses- don’t always work
external morphology- Swimming, gas pockets
Phenotypic plasticity- Jump into colonies to stay safe (harder to eat)
composition and feeding rate of zooplanktion
composition of phytoplankton- bigger blobs of green algea are harder to eat then flagolits

Question 8

Clear water Phase

Answer 8

Provided multiple evidence that grazing by zooplankton causes the spring clear water phase
–not caused by nutrient limitations

Question 9

Bottom-up control

Answer 9

Spatial heterogeneity (complexity)

Temporal variability (daylight)

Stochastic events (storms)

differ in abilities to utilize resources/limited by different resources (coexsisance)

Life-history strategies

Question 10

Top Down Control

Answer 10

Preferential grazing

prey selection

Biological warfare