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<br />C-j <br />co <br /> <br />., <br />j,,- <br /> <br />C-) <br /> <br />of about 1 m/sec can inc~ease <br />additional 4 m/sec might add only <br />1962). This suggests advantages to <br />opened exposure. <br /> <br />transpiration by 30%; an <br />another 20% (Kozlowski, <br />sites that have a more <br /> <br />I.:::..) <br />,." <br />'-~ <br /> <br />Rozema, Gude, and Pollak (1981) collected four halophytes from <br />the field and tested their rates of sec~etion and transpiration <br />after growing them on different concentrations of NaCI, KCI, and <br />caCl2, Salt marsh species included Spartina an~lica and <br />Limonium vul~are. The highest sodium secretion (60% of the <br />absorbed Na~) occured with ~. an~lica, a rate sufficient to <br />maintain an unchanged internal sodium content, h.: vul~are was <br />reported to have a corresponding value of 33%. Rozema, Gude, <br />and Wesselman (1981) found that transpiration rates among these <br />halophytes remained similar. <br /> <br />This suggests that the roots of these species were taking up and <br />transporting salts from root cells to storage components fairly <br />rapidly. Plants, like Spartina an~lica, would perhaps have an <br />advantage in being able to establish a continuum for saline <br />solution flow-through, <br /> <br />Table V presents evapotranspiration (surface evaporation + <br />t~anspiration) ~ates for selected emergent plants under a <br />variety of conditions, Tvpha spp" Scirpus validus, and <br />Pontederia cordata all represent what might be expected of new <br /> <br />TABLE V: EVAPOTRANSPIRATION RATES FOR SELECTED EMERGENT PLANTS <br /> <br />SPECIES <br /> <br />MEAN 24 HR RATE <br />(in/day) <br /> <br />ANNUAL RANGE <br />(ft!yr) <br /> <br />REFERENCE <br /> <br />Typha spp, <br />(1st yr., new stand, <br />Minn, ) <br /> <br />0,5 <br /> <br />8.8 - 15.2 <br /> <br />Pratt, et al. <br />1985 <br /> <br />Typha latifolia <br />(Mean 1 + 2 yr stands, <br />Mi ch, ) <br /> <br />0.75 <br /> <br />13,1 - 22,8 <br /> <br />Otis, 1914 <br /> <br />Tvpha au~ustifolia <br />(Native Stand, India) <br /> <br />Scirpus validus <br />(Mean 1 + 2 yr stands) <br /> <br />0,98 17,2 - 29,8 Brezny, et a I, <br /> 1973 <br />0.4 7,0 - 12.2 Otis. 1914 <br />0,64 11,3 - 19.5 Otis, 1914 <br />1. 50 26,2 - 45,6 Brezny, et a I. <br /> 1973 <br /> <br />Pontederia cordata <br />(Mean 1 + 2 yr stands) <br /> <br />Cyperus rotundas <br />(Native Stand, India) <br /> <br />18, <br />