. Bulletin. Science. ELEVATION OF TIDALLY INFLUENCED HABITAT 139 SL1 b. SL2. 0 n-o-n-D Elevation (m, NGVD) 20 Elevation (m, NGVD) Fig. 5. Percent cover versus elevation (m, NGVD) for Parapholis incurva (â ) and grouped tran- sitional/upland plants (â¡). Data grouped in m elevation classes. Mean values ±1SE. Standard errors are shown only when number of quadrats >2. Note that the y-axis of (d) extends only to 50% cover. P incurva absent from SL1 (a) and SL 4 (d). The relationship between elevation and height of tidal inundation varied among sites making elevation pe
. Bulletin. Science. ELEVATION OF TIDALLY INFLUENCED HABITAT 139 SL1 b. SL2. 0 n-o-n-D Elevation (m, NGVD) 20 Elevation (m, NGVD) Fig. 5. Percent cover versus elevation (m, NGVD) for Parapholis incurva (â ) and grouped tran- sitional/upland plants (â¡). Data grouped in m elevation classes. Mean values ±1SE. Standard errors are shown only when number of quadrats >2. Note that the y-axis of (d) extends only to 50% cover. P incurva absent from SL1 (a) and SL 4 (d). The relationship between elevation and height of tidal inundation varied among sites making elevation per se unattractive as a general criterion for delineating "tidally influenced" habitat. High tides were muted relative to coastal high tides at all but one site (SL4). The specific reasons for the differences in tidal muting among sites are not known, but channel morphology may be a contributing factor (, Van der Molen 1997). Transects at Tijuana Estuary and Carpinteria Salt Marsh ran perpendicular to small tidal creeks (<1 m wide) while transects at. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Southern California Academy of Sciences. Los Angeles, Calif. : The Academy
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