Spatial Assessment of a Biocriteria Applied to Texas Tidal Streams

Table 3

Conventional parameters by tidal stream. Color coding of studies follows Figure 1. Ammonia, Orthophosphate (Orthophos.), Total Phosphorus (Total Phos.), Total Suspended Solids (TSS), and Total Organic Carbon (TOC) in mg/L. Chlorophyll a (Chl_a) in μg/L. Data are means, standard deviations in parenthesis. See text for individual stream sample sizes. Dashed lines (—) indicate parameter not measured.

Tidal stream	Ammonia	(SD)	Orthophos.	(SD)	Total Phos.	(SD)	Chl a	(SD)	TSS	(SD)	TOC	(SD)
Mission^1	0.04	(0.06)	0.02	(0.01)	0.14	(0.07)	—	—	43.51	(35.04)	—	—
Aransas^1	0.04	(0.03)	0.20	(0.21)	0.49	(0.18)	—	—	44.68	(22.65)	—	—
Armand	0.07	(0.04)	0.26	(0.15)	0.39	(0.22)	34.92	(41.61)	38.33	(22.36)	6.87	(1.13)
Halls	0.07	(0.02)	0.11	(0.05)	0.17	(0.06)	14.54	(8.50)	28.06	(18.27)	8.53	(2.55)
Oyster	0.08	(0.06)	0.12	(0.12)	0.22	(0.26)	13.67	(14.80)	54.74	(51.00)	11.94	(7.71)
Dickinson	0.43	(0.84)	0.16	(0.06)	0.22	(0.07)	17.59	(12.92)	25.95	(16.03)	7.57	(6.66)
TCPC	0.24	(0.53)	0.09	(0.04)	0.16	(0.06)	22.47	(19.97)	17.33	(4.80)	1.78	(3.83)
HBDC	1.83	(1.94)	2.10	(2.26)	3.16	(3.44)	108.48	(59.18)	37.00	(19.35)	4.46	(7.34)
Cedar Lake	0.03	(0.01)	0.09	(0.04)	0.15	(0.03)	7.17	(5.08)	22.25	(11.22)	9.08	(6.44)
Tres Palacios	0.07	(0.04)	0.20	(0.17)	0.28	(0.18)	15.68	(19.60)	127.94	(221.79)	6.20	(1.57)
Carancahua	0.06	(0.02)	0.20	(0.11)	0.29	(0.17)	13.77	(18.29)	42.97	(31.63)	7.77	(1.54)
Garcitas	0.07	(0.03)	0.14	(0.10)	0.19	(0.08)	9.37	(10.79)	38.53	(60.73)	10.31	(4.37)
Cow Bayou	0.07	(0.04)	0.09	(0.08)	0.10	(0.05)	8.48	(10.67)	15.63	(11.95)	11.25	(4.18)
Lost River	0.05	(0.01)	0.07	(0.02)	0.14	(0.04)	11.67	(10.87)	35.77	(16.72)	6.37	(0.55)

1Chlorophyll a readings were not collected from the Mission and Aransas Rivers because water chemistry analysis was done on bottom-water samples.