Data Set (knb-lter-sbc.91.2)

SBC LTER: Beach: Time-series of beach wrack consumers, ongoing since 2011

  Summary and Data Links People and Organizations Temporal, Geographic and Taxonomic Coverage Methods and Protocols  

These methods, instrumentation and/or protocols apply to all data in this dataset:

Protocols and/or Procedures

Sandy beach methods and protocols for wrack consumers

The abundance, biomass and population characteristics of wrack consumers, primarily the talitrid amphipod Megalorchestia spp. were estimated using uniformly spaced core sampling protocols. Quantitative sampling was conducted along the three vertical format (shore-normal) transects also used for physical measurements and macrophyte wrack sampling.

Intertidal beach transects extended from the lower edge of terrestrial vegetation or the bluff to the lowest level exposed by swash. We collected a series of 10 uniformly spaced cores from the upper edge of talitrid burrows to the lowest level where talitrids were burrowed.

Cores were pooled and placed in a mesh bag with an aperture of 1.5 mm and sieved. Animals retained on the sieve were placed in labeled plastic bags, chilled and transported to the laboratory for processing. All retained coarse sediments in sieves were placed in the sample bags to retain the highly active taxa. In the laboratory, all macroinvertebrate species were identified, enumerated, blotted dry and weighed to the nearest 0.001g.