Effects of artificially introduced ground water on the chemical and biochemical characteristics of six Hillsborough County (Florida) lakes

Martin, Dean F.; Victor, D.M.; Dooris, Patricia M.

doi:10.1016/0043-1354(76)90159-7

Cited by 17 publications

(11 citation statements)

References 4 publications

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“…Phytoplankton diversity is greater in augmented lakes and positively correlated with water-column inorganic carbon (IC) concentration (Dooris et al 1982). Experiments show groundwater augmentation may also stimulate growth of the exotic macrophyte Hydrilla verticillata (Martin et al 1976b).…”

Section: Ra In a Groundwater-augmented Florida Lakementioning

confidence: 96%

“…Augmentation maintains lake stage, but is hydrologically wasteful (Stewart and Hughes 1974). In addition to concerns about water loss, several studies focused on how augmentation changes lakewater chemistry and alters the phytoplankton community (Martin et al 1976a, Dooris andMartin 1979 lakes are similar to those in groundwater, and augmented waterbodies are high in hardness, bicarbonate concentration, and pH (Martin et al 1976a). Phytoplankton diversity is greater in augmented lakes and positively correlated with water-column inorganic carbon (IC) concentration (Dooris et al 1982).…”

Section: Ra In a Groundwater-augmented Florida Lakementioning

confidence: 99%

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Biological accumulation of ²²⁶Ra in a groundwater‐augmented Florida lake

Brenner

Smoak

Allen

et al. 2000

Limnology & Oceanography

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Round Lake, Hillsborough County, Florida (U.S.A.) has been augmented with 226Ra‐rich (6.2 dpm L−1) groundwater from the Floridan aquifer for more than 30 years. Water column 226Ra activity in Round Lake is 3.4 dpm L−1, about one third of the U.S. drinking water standard value. Radionuclide measurements in biota and sediment cores from the lake indicate high 226Ra activities in plants, mollusc shells and tissues, fish bones, and recent sediments. Unionid mussels bioaccumulate 226Ra and display very high activities in soft tissues (219.9–454.8 dpm g−1 dry). Throughout Florida, groundwaters are increasingly pumped for agricultural irrigation, as well as residential and industrial use. Biological accumulation of 226Ra by filter‐feeding pelecypods in aquatic ecosystems is an important pathway for transfer of the radionuclide to higher trophic levels of both aquatic and terrestrial food webs. Radionuclide analysis of soft tissues from aquatic bivalves provides a rapid means of identifying waterbodies that receive substantial inputs of dissolved 226Ra.

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Section: Ra In a Groundwater-augmented Florida Lakementioning

confidence: 96%

Section: Ra In a Groundwater-augmented Florida Lakementioning

confidence: 99%

Biological accumulation of ²²⁶Ra in a groundwater‐augmented Florida lake

Brenner

Smoak

Allen

et al. 2000

Limnology & Oceanography

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“…Phytoplankton diversity was greater in augmented lakes compared with lakes without augmentation (Dooris et al 1982), and was correlated positively with water column inorganic carbon concentration. There was also speculation that augmentation might promote growth of the exotic macrophyte Hydrilla (Martin et al 1976b). …”

mentioning

confidence: 99%

“…Following groundwater augmentation, calcium (Ca 2+ ) and bicarbonate (HCO { 3 ) became the principal dissolved ions, and relative proportions of lake-water ions were similar to those in deep groundwater. Augmented lakes were characterized by high hardness, bicarbonate concentration, and pH (Martin et al 1976a). Phytoplankton diversity was greater in augmented lakes compared with lakes without augmentation (Dooris et al 1982), and was correlated positively with water column inorganic carbon concentration.…”

mentioning

confidence: 99%

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Radium‐226 accumulation in Florida freshwater mussels

Brenner

Smoak

Leeper

et al. 2007

Limnology & Oceanography

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Selected lakes in Hillsborough County, Florida have been hydrologically augmented with groundwater to offset stage declines caused by excessive pumping of the Floridan Aquifer. Augmentation water can be relatively rich in 226 Ra (.5 decays per minute [dpm] L 21 ). We measured 226 Ra activities in shells and soft tissues of adult bivalve molluscs (Elliptio cf. buckleyi) from groundwater-augmented and nonaugmented lakes to assess bioaccumulation of 226 Ra by mussels. Mussels from augmented lakes displayed higher 226 Ra in both shells and tissues than did mussels from nonaugmented lakes. Within a sample, 226 Ra activity in Elliptio tissues was higher than the value measured in shells. Highest activities were found in a composite mussel sample (n 5 6) from an augmented lake; soft tissue activity was 619 6 33 dpm g 21 dry weight and shell activity was 147 6 7 dpm g 21 g dry weight. Large mussels displayed greater activities in soft tissues and shells than did small mussels. We transplanted animals from a nonaugmented lake into a groundwater-augmented water body. 226 Ra activity in dry tissue rose from 32 6 1 to 196 6 2 dpm g 21 within 2 months. When 226 Ra-rich mussels (232 6 2 dpm g 21 ) from the augmented lake were transferred to the nonaugmented lake, they showed no significant 226 Ra loss over the 69-d experiment. Large Elliptio mussels concentrated 226 Ra in their soft tissues to levels about 1,000 to 25,000 times concentrations in lake water. Pumping of groundwater in Florida for residential, agricultural, and industrial use contributes dissolved 226 Ra to some surface water bodies, where it can be bioaccumulated by bivalve molluscs.

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