Cyanobacteria and microcystin in the Nebraska (USA) Sand Hills Lakes before and after modern agriculture
Chlorophyll a , zeaxanthin, and pheophytin a were measured from sediment core samples from three lakes (Dewey, Island, and Two Mile Lakes) in the Nebraska Sand Hills. Pigments were extracted and identified by high performance liquid chromatography (HPLC) and used to estimate changes in the relative...
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| Veröffentlicht in: | Journal of paleolimnology 2011-06, Vol.46 (1), p.17-27 |
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| creator | Efting, Aris A. Snow, Daniel D. Fritz, Sherilyn C. |
| description | Chlorophyll
a
, zeaxanthin, and pheophytin
a
were measured from sediment core samples from three lakes (Dewey, Island, and Two Mile Lakes) in the Nebraska Sand Hills. Pigments were extracted and identified by high performance liquid chromatography (HPLC) and used to estimate changes in the relative proportion of cyanobacteria to the algal community. The cyanobacterial toxins microcystin-LR and LA were extracted and measured using electrospray ionization liquid chromatography tandem mass spectrometry (LC/MS/MS). Microcystin-LR was found in core sections estimated to be as early as 1832, and was present in all three lake cores. Pigment and toxin data were used to determine if there were changes that occurred in the algal community structure with the onset of modernized agriculture in the region. No significant changes were found in the relative percent of cyanobacteria or chlorophyll
a
accumulation, indicating the frequency and intensity of cyanobacterial blooms has not changed over the last century. Despite this trend, there was a dramatic increase in microcystin-LR accumulation during the 1980s in Dewey Lake, which may be human induced. |
| doi_str_mv | 10.1007/s10933-011-9511-3 |
| format | Article |
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a
, zeaxanthin, and pheophytin
a
were measured from sediment core samples from three lakes (Dewey, Island, and Two Mile Lakes) in the Nebraska Sand Hills. Pigments were extracted and identified by high performance liquid chromatography (HPLC) and used to estimate changes in the relative proportion of cyanobacteria to the algal community. The cyanobacterial toxins microcystin-LR and LA were extracted and measured using electrospray ionization liquid chromatography tandem mass spectrometry (LC/MS/MS). Microcystin-LR was found in core sections estimated to be as early as 1832, and was present in all three lake cores. Pigment and toxin data were used to determine if there were changes that occurred in the algal community structure with the onset of modernized agriculture in the region. No significant changes were found in the relative percent of cyanobacteria or chlorophyll
a
accumulation, indicating the frequency and intensity of cyanobacterial blooms has not changed over the last century. Despite this trend, there was a dramatic increase in microcystin-LR accumulation during the 1980s in Dewey Lake, which may be human induced.</description><identifier>ISSN: 0921-2728</identifier><identifier>EISSN: 1573-0417</identifier><identifier>DOI: 10.1007/s10933-011-9511-3</identifier><language>eng</language><publisher>Dordrecht: Springer Netherlands</publisher><subject>Agribusiness ; Agriculture ; Algae ; Bacteria ; Chlorophyll ; Climate Change ; Community structure ; Earth and Environmental Science ; Earth Sciences ; Environmental impact ; Freshwater ; Freshwater & Marine Ecology ; Geology ; Ionization ; Lakes ; Liquid chromatography ; Mass spectrometry ; Microcystins ; Original Paper ; Paleontology ; Physical Geography ; Sand ; Sedimentology ; Sediments ; Toxicity ; Toxins ; Water analysis</subject><ispartof>Journal of paleolimnology, 2011-06, Vol.46 (1), p.17-27</ispartof><rights>Springer Science+Business Media B.V. 2011</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a370t-e567a893fa4b530c55826a21d2ffa45df46e96cf9d6225592c8006834e4185d63</citedby><cites>FETCH-LOGICAL-a370t-e567a893fa4b530c55826a21d2ffa45df46e96cf9d6225592c8006834e4185d63</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10933-011-9511-3$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10933-011-9511-3$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Efting, Aris A.</creatorcontrib><creatorcontrib>Snow, Daniel D.</creatorcontrib><creatorcontrib>Fritz, Sherilyn C.</creatorcontrib><title>Cyanobacteria and microcystin in the Nebraska (USA) Sand Hills Lakes before and after modern agriculture</title><title>Journal of paleolimnology</title><addtitle>J Paleolimnol</addtitle><description>Chlorophyll
a
, zeaxanthin, and pheophytin
a
were measured from sediment core samples from three lakes (Dewey, Island, and Two Mile Lakes) in the Nebraska Sand Hills. Pigments were extracted and identified by high performance liquid chromatography (HPLC) and used to estimate changes in the relative proportion of cyanobacteria to the algal community. The cyanobacterial toxins microcystin-LR and LA were extracted and measured using electrospray ionization liquid chromatography tandem mass spectrometry (LC/MS/MS). Microcystin-LR was found in core sections estimated to be as early as 1832, and was present in all three lake cores. Pigment and toxin data were used to determine if there were changes that occurred in the algal community structure with the onset of modernized agriculture in the region. No significant changes were found in the relative percent of cyanobacteria or chlorophyll
a
accumulation, indicating the frequency and intensity of cyanobacterial blooms has not changed over the last century. 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Snow, Daniel D. ; Fritz, Sherilyn C.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a370t-e567a893fa4b530c55826a21d2ffa45df46e96cf9d6225592c8006834e4185d63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Agribusiness</topic><topic>Agriculture</topic><topic>Algae</topic><topic>Bacteria</topic><topic>Chlorophyll</topic><topic>Climate Change</topic><topic>Community structure</topic><topic>Earth and Environmental Science</topic><topic>Earth Sciences</topic><topic>Environmental impact</topic><topic>Freshwater</topic><topic>Freshwater & Marine Ecology</topic><topic>Geology</topic><topic>Ionization</topic><topic>Lakes</topic><topic>Liquid chromatography</topic><topic>Mass spectrometry</topic><topic>Microcystins</topic><topic>Original Paper</topic><topic>Paleontology</topic><topic>Physical Geography</topic><topic>Sand</topic><topic>Sedimentology</topic><topic>Sediments</topic><topic>Toxicity</topic><topic>Toxins</topic><topic>Water analysis</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Efting, Aris A.</creatorcontrib><creatorcontrib>Snow, Daniel D.</creatorcontrib><creatorcontrib>Fritz, Sherilyn C.</creatorcontrib><collection>CrossRef</collection><collection>Aqualine</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Ecology Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Virology and AIDS Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>ProQuest Central Student</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>SciTech Premium Collection</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>ProQuest Biological Science Collection</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biological Science Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><jtitle>Journal of paleolimnology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Efting, Aris A.</au><au>Snow, Daniel D.</au><au>Fritz, Sherilyn C.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Cyanobacteria and microcystin in the Nebraska (USA) Sand Hills Lakes before and after modern agriculture</atitle><jtitle>Journal of paleolimnology</jtitle><stitle>J Paleolimnol</stitle><date>2011-06-01</date><risdate>2011</risdate><volume>46</volume><issue>1</issue><spage>17</spage><epage>27</epage><pages>17-27</pages><issn>0921-2728</issn><eissn>1573-0417</eissn><abstract>Chlorophyll
a
, zeaxanthin, and pheophytin
a
were measured from sediment core samples from three lakes (Dewey, Island, and Two Mile Lakes) in the Nebraska Sand Hills. Pigments were extracted and identified by high performance liquid chromatography (HPLC) and used to estimate changes in the relative proportion of cyanobacteria to the algal community. The cyanobacterial toxins microcystin-LR and LA were extracted and measured using electrospray ionization liquid chromatography tandem mass spectrometry (LC/MS/MS). Microcystin-LR was found in core sections estimated to be as early as 1832, and was present in all three lake cores. Pigment and toxin data were used to determine if there were changes that occurred in the algal community structure with the onset of modernized agriculture in the region. No significant changes were found in the relative percent of cyanobacteria or chlorophyll
a
accumulation, indicating the frequency and intensity of cyanobacterial blooms has not changed over the last century. Despite this trend, there was a dramatic increase in microcystin-LR accumulation during the 1980s in Dewey Lake, which may be human induced.</abstract><cop>Dordrecht</cop><pub>Springer Netherlands</pub><doi>10.1007/s10933-011-9511-3</doi><tpages>11</tpages></addata></record> |
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| subjects | Agribusiness Agriculture Algae Bacteria Chlorophyll Climate Change Community structure Earth and Environmental Science Earth Sciences Environmental impact Freshwater Freshwater & Marine Ecology Geology Ionization Lakes Liquid chromatography Mass spectrometry Microcystins Original Paper Paleontology Physical Geography Sand Sedimentology Sediments Toxicity Toxins Water analysis |
| title | Cyanobacteria and microcystin in the Nebraska (USA) Sand Hills Lakes before and after modern agriculture |
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