The effect of pH, aluminum, and chelator manipulations on the growth of acidic and circumneutral species of Asterionella
dc.contributor.author | Riseng, Catherine M. | en_US |
dc.contributor.author | Gensemer, Robert W. | en_US |
dc.contributor.author | Kilham, Susan Soltau | en_US |
dc.date.accessioned | 2006-09-11T14:00:12Z | |
dc.date.available | 2006-09-11T14:00:12Z | |
dc.date.issued | 1991-12 | en_US |
dc.identifier.citation | Riseng, Catherine M.; Gensemer, Robert W.; Kilham, Susan S.; (1991). "The effect of pH, aluminum, and chelator manipulations on the growth of acidic and circumneutral species of Asterionella ." Water, Air, and Soil Pollution 60 (3-4): 249-261. <http://hdl.handle.net/2027.42/43905> | en_US |
dc.identifier.issn | 0049-6979 | en_US |
dc.identifier.issn | 1573-2932 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/43905 | |
dc.description.abstract | The growth rates of two diatoms, acidophilic Asterionella ralfsii and circumneutral A. formosa , were differentially affected by varying pH, Al, and EDTA in chemically defined media. Free Al ion concentration increased as pH and EDTA concentration decreased. Free trace metal ion concentration decreased as EDTA levels increased but increased by orders of magnitude upon addition of Al. pH had an overriding species specific effect on growth rate; at low pH A. ralfsii had higher growth rates than A. formosa and vice versa at high pH. For both species higher EDTA levels depressed growth rates. Moderate additions of Al generally resulted in growth stimulation. The growth rate stimulations, especially at 200 and 400 μg L −1 Al additions, correlate to increases in free trace metal ion concentrations. The EDTA-AI interaction effects on growth rate were both pH and concentration dependent: at pH 7 both species were stimulated by addition of Al at all EDTA levels (except A. ralfsii at 5.0 mM EDTA and A. formosa at 0.5 mNM EDTA); at pH 6 Al addition either stimulated or had no effect on the growth rates of both species (except at low EDTA and high Al levels); at pH 5 A. formosa did not grow and additions of 200 μg L −1 Al stimulated growth of A. ralfsii . It is likely that the effect of pH, Al, and EDTA on speciation of essential or toxic trace metals affects growth rates of these diatoms in a species specific manner. | en_US |
dc.format.extent | 751916 bytes | |
dc.format.extent | 3115 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Kluwer Academic Publishers; Springer Science+Business Media | en_US |
dc.subject.other | Environment | en_US |
dc.subject.other | Atmospheric Protection/Air Quality Control/Air Pollution | en_US |
dc.subject.other | Hydrogeology | en_US |
dc.title | The effect of pH, aluminum, and chelator manipulations on the growth of acidic and circumneutral species of Asterionella | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Natural Resources and Environment | en_US |
dc.subject.hlbsecondlevel | Public Health | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.subject.hlbtoplevel | Health Sciences | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Biology, The University of Michigan, 48109-1048, Ann Arbor, MI, USA; 236 Sunset, 48103, Ann Arbor, MI, USA | en_US |
dc.contributor.affiliationum | Department of Biology, The University of Michigan, 48109-1048, Ann Arbor, MI, USA | en_US |
dc.contributor.affiliationum | Department of Biology, The University of Michigan, 48109-1048, Ann Arbor, MI, USA | en_US |
dc.contributor.affiliationumcampus | Ann Arbor | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/43905/1/11270_2004_Article_BF00282626.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1007/BF00282626 | en_US |
dc.identifier.source | Water, Air, and Soil Pollution | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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