Diversity analysis of intertidal species in different tide pool elevations
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DIVERSITY ANALYSIS OF INTERTIDAL SPECIES IN DIFFERENT TIDE POOL ELEVATIONS . Femi Adegbidi, Brittany Cain , Ally Pennell, Melanie Hogan, Louise -Marie Roux . The Rocky I ntertidal. Unique environment with fluctuating physical factors Physical transition zone

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Diversity analysis of intertidal species in different tide pool elevations

DIVERSITY ANALYSIS OF INTERTIDAL SPECIES IN DIFFERENT TIDE POOL ELEVATIONS

Femi Adegbidi, Brittany Cain , Ally Pennell,

Melanie Hogan, Louise-Marie Roux


The rocky i ntertidal
The Rocky Intertidal

  • Unique environment with fluctuating physical factors

  • Physical transition zone

  • Diverse zones with various species

  • Fluctuating habitats


Tide pools
Tide Pools

  • Fluctuating environments

  • Tides

  • Physical factors

    • Temperature

    • Salinity

    • Oxygen concentration


Tide pool composition
Tide Pool Composition

  • High Elevations

    • High salinity

    • Temperature changes

  • Low Elevations

    • More water

    • Oxygen

    • Poor at dealing with fluctuations


Objective
Objective

  • Effect of elevation on species diversity and organismal composition in tide pools

  • Hypotheses

    • Medium-Low height tide pools  greater diversity and richness

    • Organisms found will be similar to those defined in the intertidal zonation theory

    • Tide pools at similar elevations will be more similar to each other


Bay of fundy
Bay of Fundy

  • St. Andrew’s, NB

  • World’s highest tides

  • Ideal site for intertidal research


Sampling sites
Sampling Sites

  • 2 sites

    • Indian Point- uniform, sandy substrate,

    • Green’s Point- steep, rocky

      • 4 tide pools per site


Sampling methods
Sampling Methods

  • 30 cm2 quadrat

  • Surveyor’s transit

  • Organisms collected and identified


Data analysis
Data Analysis

  • Dichotomous key for species identification

  • Diversity indexes

    • Sorensen’ssimilarity index

    • Simpson’s diversity index


Common species greens point
Common Species: Greens Point

Highest Tide Pool

Lowest Tide Pool






Conclusions
Conclusions

Organisms that can cope with frequent disturbance are found in tide pools at higher elevations

Organisms that require more water and oxygen in tide pools at lower elevations

Sampling methods may have missed microscopic organisms  Changing diversity



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