Skip to main content
padlock icon - secure page this page is secure

Free Content Community Structure of Intertidal Macrofauna on Two Surf-Exposed Texas Sandy Beaches

Download Article:
(PDF 569 kb)
The intertidal macrofauna of two surf-exposed Texas sandy beaches (a mainland beach and a barrier island beach) was studied from July 1976 to June 1977 to determine species composition, abundance, biomass, diversity, zonation and seasonal changes. The numerically dominant species (both beaches combined) were the haustoriid amphipods Haustorius n. sp. and Lepidactylus n. spp., the polychaetes Scolelepis squamata and Lumbrineris impatiens, and the bivalves Donax texasiana, D. roemeri and D. dorotheae, Donax texasiana comprised the greatest biomass at both beaches. Mean density of individuals was about three times and biomass density more than five times greater at the barrier island beach, characterized by greater wave energy and more uniformly well-sorted sand. Species diversity and richness (lack of high dominance) were higher at the mainland beach, and were lower and more variable, with higher dominance, at the barrier island beach. Species composition of intertidal macrofauna inhabiting warm temperate western Atlantic and Gulf of Mexico beaches is compared with that of tropical southwestern Gulf beaches. The major latitudinal difference is the replacement of haustoriid amphipods, which dominate upper and mid tide levels of temperate beaches, by cirolanid isopods on tropical beaches of the southwestern Gulf.

22 References.

No Supplementary Data.
No Article Media
No Metrics

Document Type: Research Article

Publication date: 01 October 1981

More about this publication?
  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more