Trace‐element accumulation by <i>Hygrohypnum ochraceum</i> in the upper Rio Grande Basin, Colorado and New Mexico, USA

A procedure to culture the aquatic moss, Fontinalis antipyretica, is described. The moss was collected in a stream, carried to the laboratory, and immediately treated: apices were isolated and rinsed under a stereomicroscope and submitted to ultrasonic cleaning combined with an iodine treatment and then to an antibiotic/anti-eukaryotic treatment for 4 days. This procedure permitted us for the first time to eliminate the microalgae associated with an aquatic moss in culture, solving the problem of proliferation of these microalgae in the culture medium. Furthermore, the minimal concentration of eight essential metals required by this moss was determined in order to have metal concentrations in the cultured moss as low as possible. A perennial culture of a clonal strain of an aquatic moss for use as a metal bioaccumulator was obtained and the first step to provide a standardized bioindication tool for metal detection in continental waters was passed over.

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Bioaccumulation of Selenium by the Bryophyte Hygrohypnum ochraceum in the Fountain Creek Watershed, Colorado

Herrmann

Turner

Carsella

et al. 2012

Environmental Management

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Aquatic bryophytes, Hygrohypnum ochraceum, were deployed "in situ" at 14 sites in the Fountain Creek Watershed, spring and fall, 2007 to study selenium (Se) accumulation. Dissolved, total, and pore (sediment derived) water samples were collected and water quality parameters determined while plants were exposed to the water for 10 days. There was a trend showing plant tissue-Se uptake with distance downstream and we found a strong correlation between Se in the water with total hardness in both seasons. There was a modest association between Se-uptake in plants with hardness in the spring of 2007 but not the fall. Plants bioconcentrated Se from the water by a factor of 5.8 × 10(3) at Green Mountain Falls and 1.5 × 10(4) at Manitou Springs in the fall of 2007. Both are examples of the bioconcentration abilities of the plants, primarily in the upper reaches of the watershed where bioconcentration factors were highest. However, the mean minima and maxima of Se in the plants in each of the three watershed segments appeared similar during both seasons. We found direct relationships between the pore and dissolved Se in water in the spring (R (2) = 0.84) and fall (R (2) = 0.95) and dissolved Se and total hardness in the spring and fall (R (2) = 0.92). The data indicate that H. ochraceum was a suitable indicator of Se bioavailability and Se uptake in other trophic levels in the Fountain Creek Watershed based on a subsequent study of Se accumulation in fish tissues at all 14 sites.

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Trace‐element accumulation by Hygrohypnum ochraceum in the upper Rio Grande Basin, Colorado and New Mexico, USA

Cited by 17 publications

References 18 publications

Heavy Metals in Aquatic Bryophytes from the Ore Mountains (Germany)

Heavy Metals in Aquatic Bryophytes from the Ore Mountains (Germany)

A Procedure to Purify and Culture a Clonal Strain of the Aquatic Moss Fontinalis antipyretica for Use as a Bioindicator of Heavy Metals

Bioaccumulation of Selenium by the Bryophyte Hygrohypnum ochraceum in the Fountain Creek Watershed, Colorado

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