. The ecology of Tijuana Estuary, California : a national estuarine research reserve. Estuarine ecology -- California Tijuana River Estuary. Table Percent occurrence of the more abundant species in the transition from upland to wetland at the northernmost part of Tijuana Estuary. Data are from m2 circular quadrats (numbers sampled in parentheses) taken per 40-cm elevation class (Zedler unpubl. data). Elevation Class3 Species 1 2 3 4 5 6 7 8 91011 (29) (99) (52) (25) (33) (30) (31) (34) (22) (33) ( 8 ) Artemisia californica Eriogonum fasciculatum Haplopappus venetus Rhus laurina Atrip
. The ecology of Tijuana Estuary, California : a national estuarine research reserve. Estuarine ecology -- California Tijuana River Estuary. Table Percent occurrence of the more abundant species in the transition from upland to wetland at the northernmost part of Tijuana Estuary. Data are from m2 circular quadrats (numbers sampled in parentheses) taken per 40-cm elevation class (Zedler unpubl. data). Elevation Class3 Species 1 2 3 4 5 6 7 8 91011 (29) (99) (52) (25) (33) (30) (31) (34) (22) (33) ( 8 ) Artemisia californica Eriogonum fasciculatum Haplopappus venetus Rhus laurina Atriplex semibaccata Cressa truxillensis Distichlis spicata Frankenia grandifolia Lycium californicum Monanthochloe littoralis Salicornia subterminalis Salicornia virginica Limonium californicum Atriplex watsonii 7 1 5 2 4 1 7 1 9 21 6 4 39 3 10 13 9 6 1 4 1 5 1 6 1 2 3 52 3 34 1 9 8 1 2 3 66 68 75 64 33 1 3 3 59 40 27 44 1 5 1 4 3 1 2 59 37 6 4 41 44 23 52 1 7 1 0 4 1 4 6 24 4 27 1 2 27 39 75 aElevation classes each included a 40-cm (16-inch) elevation range; they are numbered from low to high elevation. The marsh species that grows highest up the slope is saltgrass (Distichlis spicata). Also found in sandy areas near the dunes, this marsh plant is easily mistaken for Bermuda grass (Cynodon dactylon) in vegetative form. Insects, however, know the difference. The saltgrass is the sole host plant for larvae of the wandering skipper (Panoquina errans, Lepidoptera: Hesperidae; Figure ). The first occurrences of alkali weed (Cressa truxillensis) and alkali heath are additional indicators that you have moved from the upland down into the wetland. At the sloped corner, they first appear at approximately 3 m ( ft) above MSL. While the habitat where the highest marsh plants occur is often dry, it becomes inundated when storms coincide with the highest spring tides (Cayan and Flick 1985).. Figure mm long. Zedler. The wandering skipper. Body 14 Mclntire collection, © 1986 by 27. P
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