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Explanations of patterns of intertidal diversity at regional scales

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Abstract:

Aim

To test the hypothesis that the abiotic variables of salinity, temperature and fetch could explain patterns of intertidal species richness at regional scales (100–1000 s of km).Location

British Columbia, Canada.Methods

Using a 180 station data set collected over 7° of latitude on bedrock shorelines, we used a combination of correlation, multiple regression and ordination to show that species richness was strongly related to fetch, salinity and temperature.Results

Results are consistent with the expected outcomes from the stability-time and intermediate disturbance hypotheses.Main conclusions

Temperate intertidal environments are predominantly physically accomodated at regional scales. Implications for near-shore conservation are that the conservation of outer coast environments protects more species in a given area than inner coast environments.

Keywords: Conservation; disturbance; diversity; intertidal; stability

Document Type: Miscellaneous

Publication date: April 1, 2001

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