@article{
 title = {Comparison of fossil pigments with 20 years of phytoplankton data from eutrophic Lake 227, Experimental Lakes Area},
 type = {article},
 year = {1994},
 pages = {2286-2299},
 volume = {51},
 id = {ff52182d-c14c-3f3f-9abc-8a61dc7c06e8},
 created = {2019-07-12T15:07:54.141Z},
 file_attached = {true},
 profile_id = {3c181434-ae75-3e95-a723-2bfcc2f14c0b},
 group_id = {db3318bf-b2fb-3b86-9f1d-17188c0ddfa3},
 last_modified = {2019-07-16T17:40:58.916Z},
 read = {false},
 starred = {false},
 authored = {false},
 confirmed = {true},
 hidden = {false},
 citation_key = {Leavitt1994},
 private_publication = {false},
 abstract = {Fossil pigments from annually laminated sediments were calibrated with coeval phytoplankton data (1 970-1 989) from experimentally eutrophied Lake 227 in the Experimental Lakes Area, Ontario. Concentrations of ubiquitous pigments (b-carotene, pheophytisa ai were correlated to total algal biomass standing crop (r = 0.56-0.65; P 6 0.01) during the ice-free seasons, but not to carbon fixation or water- column chlorophyll (Chi). indicator pigments were correlated to ice-free season algal biomass for cyanobacteria (echinenone, aphaninophyli) and chlorophytes (lutein-zeaxanthin, pheophytin b)(a = 0.53-0.55, P < 0.05), weakly correlated for cryptophytes (alloxanthin, a-carotene; r = 0.32-0.40, P < 0.10), but were uncorrelated for chrysophytes and diatoms (fucoxanthin, Chl c) or dinoflagellates (peredinin). Premanipulation concentrations of fossil pigments (nmol pigment (g organic matter)-') from green algae and filamentous cyanobacteria (myxoxanthsphyll) increased 4- to 10-fold in response to eutrophication of Lake 227. N,-fixing cyanobacteria (recorded as aphanizophyll) replaced chlorophytes after the nitrogen additions decreased threefold in 1975. In contrast, accumulation rates of pigments (nmol pigment rn-d . yr ') were rarely correlated with algal standing crop or production and were less satisfactory than fossil concentrations for the purpose of detecting changes in phytoplankton community composition.},
 bibtype = {article},
 author = {Leavitt, P. R. and Findlay, D. L.},
 journal = {Canadian Journal of Fisheries and Aquatic Sciences},
 keywords = {ELA,EUTROPHICATION,L227,PALEOLIMNOLOGY-PIGMENTS,PHYTOPLANKTON,PIGMENTS}
}

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Concentrations of ubiquitous pigments (b-carotene, pheophytisa ai were correlated to total algal biomass standing crop (r = 0.56-0.65; P 6 0.01) during the ice-free seasons, but not to carbon fixation or water- column chlorophyll (Chi). indicator pigments were correlated to ice-free season algal biomass for cyanobacteria (echinenone, aphaninophyli) and chlorophytes (lutein-zeaxanthin, pheophytin b)(a = 0.53-0.55, P < 0.05), weakly correlated for cryptophytes (alloxanthin, a-carotene; r = 0.32-0.40, P < 0.10), but were uncorrelated for chrysophytes and diatoms (fucoxanthin, Chl c) or dinoflagellates (peredinin). Premanipulation concentrations of fossil pigments (nmol pigment (g organic matter)-') from green algae and filamentous cyanobacteria (myxoxanthsphyll) increased 4- to 10-fold in response to eutrophication of Lake 227. N,-fixing cyanobacteria (recorded as aphanizophyll) replaced chlorophytes after the nitrogen additions decreased threefold in 1975. In contrast, accumulation rates of pigments (nmol pigment rn-d . yr ') were rarely correlated with algal standing crop or production and were less satisfactory than fossil concentrations for the purpose of detecting changes in phytoplankton community composition.","bibtype":"article","author":"Leavitt, P. R. and Findlay, D. L.","journal":"Canadian Journal of Fisheries and Aquatic Sciences","keywords":"ELA,EUTROPHICATION,L227,PALEOLIMNOLOGY-PIGMENTS,PHYTOPLANKTON,PIGMENTS","bibtex":"@article{\n title = {Comparison of fossil pigments with 20 years of phytoplankton data from eutrophic Lake 227, Experimental Lakes Area},\n type = {article},\n year = {1994},\n pages = {2286-2299},\n volume = {51},\n id = {ff52182d-c14c-3f3f-9abc-8a61dc7c06e8},\n created = {2019-07-12T15:07:54.141Z},\n file_attached = {true},\n profile_id = {3c181434-ae75-3e95-a723-2bfcc2f14c0b},\n group_id = {db3318bf-b2fb-3b86-9f1d-17188c0ddfa3},\n last_modified = {2019-07-16T17:40:58.916Z},\n read = {false},\n starred = {false},\n authored = {false},\n confirmed = {true},\n hidden = {false},\n citation_key = {Leavitt1994},\n private_publication = {false},\n abstract = {Fossil pigments from annually laminated sediments were calibrated with coeval phytoplankton data (1 970-1 989) from experimentally eutrophied Lake 227 in the Experimental Lakes Area, Ontario. Concentrations of ubiquitous pigments (b-carotene, pheophytisa ai were correlated to total algal biomass standing crop (r = 0.56-0.65; P 6 0.01) during the ice-free seasons, but not to carbon fixation or water- column chlorophyll (Chi). indicator pigments were correlated to ice-free season algal biomass for cyanobacteria (echinenone, aphaninophyli) and chlorophytes (lutein-zeaxanthin, pheophytin b)(a = 0.53-0.55, P < 0.05), weakly correlated for cryptophytes (alloxanthin, a-carotene; r = 0.32-0.40, P < 0.10), but were uncorrelated for chrysophytes and diatoms (fucoxanthin, Chl c) or dinoflagellates (peredinin). Premanipulation concentrations of fossil pigments (nmol pigment (g organic matter)-') from green algae and filamentous cyanobacteria (myxoxanthsphyll) increased 4- to 10-fold in response to eutrophication of Lake 227. N,-fixing cyanobacteria (recorded as aphanizophyll) replaced chlorophytes after the nitrogen additions decreased threefold in 1975. In contrast, accumulation rates of pigments (nmol pigment rn-d . yr ') were rarely correlated with algal standing crop or production and were less satisfactory than fossil concentrations for the purpose of detecting changes in phytoplankton community composition.},\n bibtype = {article},\n author = {Leavitt, P. R. and Findlay, D. 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