Elements of Habitat Complexity That Influence Harpacticoid Copepods Associated with Seagrass Beds in a Temperate Bay

• Published in: Oecologia Vol. 131; no. 4; pp. 598 - 605
• Main Authors: Jenkins, Gregory P., Walker-Smith, Genefor K., Paul A. Hamer
• Format: Journal Article
• Language: English
• Published: Berlin Springer-Verlag 01-05-2002; Springer; Springer Nature B.V
• Subjects: Abundance; Animal and plant ecology; Animal, plant and microbial ecology; Aquatic crustaceans; Aquatic habitats; Biological and medical sciences; Community Ecology; Complexity; Copepoda; Fundamental and applied biological sciences. Psychology; Habitat conservation; Habitat preferences; Habitats; Harpacticoida; Macroinvertebrates; Marine; Marine ecology; Planting density; Rarefaction; Sea grasses; Sea water ecosystems; Small mammals; Surface area; Surface areas; Synecology; Taxa; Taxonomy; Tracheophyta; Wildlife habitats; New South Wales; Australia; Port Phillip Bay; Oceania; Australia, Victoria; PSE, Australia, Victoria, Port Phillip Bay; Community structure; Environmental factor; Experimental study; Crustacea; Marine environment; Meiobenthos; Animal community; Arthropoda; Copepoda; Habitat; Bay; Seagrass bed; Invertebrata; Comparative study; Species richness; Ecological abundance; Harpacticoidea; Meiofauna; Taxonomic richness; Structural heterogeneity; Abundance; Artificial seagrass
• ISSN: 0029-8549; 1432-1939
• DOI: 10.1007/s00442-002-0911-y

The influence of habitat structure on abundance and taxonomic richness of epibenthic harpacticoid copepods in seagrass beds of Port Phillip Bay, Australia was investigated using artificial seagrass plants. The density and length of artificial seagrass plants was manipulated at three sites over two sampling times. Results for artificial plants were also compared with controls without plants. The presence of habitat structure in the form of artificial seagrass resulted in a significant increase in harpacticoid abundance at all sites and taxonomic richness at one site. In terms of artificial seagrass treatments, higher blade density resulted in higher harpacticoid abundance, but blade length and surface area had no significant effect. Taxonomic richness did not vary amongst artificial seagrass treatments. At the site where taxonomic richness was increased in the presence of artificial seagrass, rarefaction showed that the result was consistent with a passive increase related to increased sample size. In contrast, although abundances in artificial seagrass were significantly higher than in controls at the other two sites, the taxonomic richness was similar to controls, suggesting that the full range of taxa available was represented in control samples. This study shows that structural aspects of complexity can have importance beyond the simple provision of complexity in the form of increased surface area of habitat, and may depend on the scale examined. Further, the study emphasises the importance of spatial and temporal replication of experiments to give generality to results.