...Fig. 15. —Beach bordering lagoon, southeast corner, Cholla Bay, Mexico. ...

... of various ages often are mixed together. Consequently, remains of dead invertebrates found on modern surfaces are not contemporary, but represent typically long-term cemeteries of marine life. For example, out of 30 “modern” radiocarbon-dated shells collected from Cholla Bay in the Gulf of California, 15...

... frequency between locations. He observed relatively low repair values in the estuarine waters of Denmark and the Wadden Sea, and higher values in the mostly marine environment of the southern North Sea. Variation between microhabitats has been observed in Bodega Bay, California ( Geller, 1983 ) and Cholla...

... diagnostic, is that of traces of organisms, including tracks, trails, and fecal material. Gastropod trails are abundant on the tidal flats at Cholla Bay, Sonora ( McKee, 1957b ). The imprints left by a great variety of organisms are mentioned by Van Straaten (1954b) for the Wadden Sea. The drying...

... 2 (for example in Cholla Bay, Meldahl 1987 ), this results in the recycling of prodigious volumes of sediment; deep-tier infauna such as callianassid shrimp and certain groups of polychaete worms are thus termed ‘conveyer belt bioturbators' ( Meldahl 1987 ; Martin et al. 1996 ). The activity...

..., interdistributary bays, channel-mouth bars, and distributary channels. These environments, their wire-line log patterns, and facies relationships indicate dominantly fluvial-driven deltaic depositional systems. Wire-line log correlations using regionally extensive maximum flooding surfaces provide the basis...

..., considering only infaunal bivalves, which should be least sensitive to this methodological difference, Kowalewski et al. (1995) found no differences in damage to shell interiors and exteriors in Cholla Bay and San Felipe intertidal assemblages (Gulf of California), but tallied a larger number of pristine...

... that the frequency of predatory repair scars in gastropods live-collected from macrotidal flats of Cholla Bay (Mexico) varied among species from 7.6% to 87.9%. The variability among microhabitats also was substantial (11.9–30.7% and 26.8–64.9% for two different gastropod species, respectively). Similarly, a notable...

... contact between the lower coarse-grained interval and upper fine-grained unit ( Fig. 11D ; Meldahl, 1987 ). On the intertidal flats of Cholla Bay, Meldahl (1987) observed callianassid shrimp and polychaetes forming biogenic stratification consisting of a 20–50 cm lower, poorly sorted, shell-rich layer...

... ( Larrea divaricata ), teddy bear cholla ( Opuntia bigelovii ), and other flora. Neotoma cinerea collect aspen ( Populus tremuloides ), Douglas fir ( Pseudotsuga menziesii ), rabbitbrush ( Crysothamnus spp.), spruce ( Picea spp.), pine ( Pinus spp.), and other vegetation. Due to the consumption...