Coastal environments of Humboldt County provide an optimal habitat for a diversity of macroinvertebrates. This study’s focus is to determine the differences in diversity of coastal macroinvertebrate (CM) species on intertidal boulders. Eleven CM species were visually counted within a one-square-meter quadrat along two height strata of five intertidal boulders. Based upon the Shannon-Wiener diversity index, diversity was measured between the CM species in the lower region (0-1 meter from base of boulder) and the upper region (1-2 meters from base of boulder). The resulting data showed the lower regions of the boulders had a higher average diversity rating, as compared to the upper boulder regions.
Antonelli, Louis; Winkler, Alexandra; Taylor, Theron; and Greenleaf, Natalie
"Variation in Coastal Macroinvertebrate Species Diversity on Intertidal Boulders in Trinidad, California.,"
IdeaFest: Interdisciplinary Journal of Creative Works and Research from Cal Poly Humboldt: Vol. 6, Article 3.
Available at: https://digitalcommons.humboldt.edu/ideafest/vol6/iss1/3