Silica-Scaled Chrysophytes from the Ukrainian Polissia

2020 ◽  
Vol 41 (12) ◽  
Author(s):  
Dmitry A. Kapustin ◽  
Evgeniy S. Gusev ◽  
Galina G. Lilitskaya ◽  
Maxim S. Kulikovskiy
Keyword(s):  
Scaled Chrysophytes

Silica-Scaled Chrysophytes of Cold Region: A Case Study Zhenbao Island Wetland Preserve, Northeast China

2012 ◽  
Vol 178-181 ◽  
pp. 922-925
Author(s):  
Cheng Xue Ma ◽  
Jing Zhang ◽  
Hong Xian Yu ◽  
Yin Xin Wei ◽  
Xiu Ping Yuan
Keyword(s):  
Northeast China ◽  
New Records ◽  
Wide Distribution ◽  
Distribution Range ◽  
Dispersal Ability ◽  
Cold Region ◽  
Scaled Chrysophytes ◽  
First Report

This first survey in 2009 and 2010 on silica-scaled Chrysophytes in Zhenbao Island Wetland Preserve, Northeast China, recorded 32 taxa (5 in Chrysophyceae and 27 in Synurophyceae), of which 29 were previously found in other parts of China, three species, Spiniferomonas serrata, Mallomonas transsylvanica and Synura punctulosa are new records to China. In terms of biogeography, 1 taxon is endemic, 2 bipolar, 1 northern temperate, 9 cosmopolitan, and 18 of wide distribution. The endemism of Synura punctulosa, appears due to its poor dispersal ability; lack of sampling data may also contribute its known distribution range. Spiniferomonas serrata and Mallomonas transsylvanica, two bipolar taxa, are the first report in China. More research efforts are needed for adequately understanding the distributions of this group of algae.

Distribution of scaled chrysophytes in 17 Adirondack (New York) lakes with special reference to pH

1988 ◽  
Vol 66 (7) ◽  
pp. 1391-1403 ◽  
Author(s):  
Peter A. Siver
Keyword(s):  
New York ◽  
Special Reference ◽  
Surface Sediments ◽  
Species Distributions ◽  
Franklin County ◽  
Scaled Chrysophytes ◽  
Bog Lakes ◽  
Adirondack Lakes ◽  
The Common ◽  
Similarities And Differences

Thirty-four scaled chrysophyte taxa are described from 17 Adirondack lakes located in either Hamilton or Franklin counties. Ten taxa, Synura sphagnicola, Syn. echinulata, Syn. petersenii, Mallomonas acaroides var. muskokana, M. hamata, M. caudata, M. crassisquama, M. galeiformis, Spiniferomonas trioralis, and Chrysosphaerella longispina, were found in more than 40% of the study lakes. Mallomonas acaroides var. muskokana, M. hamata, Syn. sphagnicola, Syn. echinulata, and Spiniferomonas coronacircumspina were common and important components of the phytoplankton floras in lakes with a pH < 5.4; however, M. hamata and Sp. coronacircumspina were noticeably absent from bog lakes. Synura sphagnicola and Syn. echinulata were as common in samples with a pH between 5.4 and 7 as they were below pH 5.4. Mallomonas crassisquama, M. caudata, M. pseudocoronata, and Synura spinosa were found in a significantly greater percentage of samples from circumneutral lakes and were lacking from waters with a pH < 5.4. Differences in species distributions between Hamilton County (higher mean pH) and Franklin County lakes further supported the observed pH ranges of the common taxa. Similarities and differences are made with a study of Smol et al. (Can. J. Bot. 62: 911–923), who described the distribution of scaled chrysophytes from the surface sediments of Adirondack lakes.

Distribution of scaled chrysophytes (Chrysophyceae and Synurophyceae) from the Mesopotamia region of Argentina

2010 ◽  
Vol 136 ◽  
pp. 181-190
Author(s):  
Diana Sueldo ◽  
Noar Madanes ◽  
Peter Siver ◽  
María Susana Vigna
Keyword(s):  
Scaled Chrysophytes

Silica-scaled chrysophytes from the bog-lake Baláta-tó, SW Hungary

1998 ◽  
Vol 18 (6) ◽  
pp. 727-733 ◽  
Author(s):  
L. S. Péterfi ◽  
J. Padisák ◽  
L. Momeu ◽  
G. Borics
Keyword(s):  
Scaled Chrysophytes

Use of Extant Populations of Scaled Chrysophytes for the Inference of Lakewater pH

1990 ◽  
Vol 47 (7) ◽  
pp. 1339-1347 ◽  
Author(s):  
Peter A. Siver ◽  
Josephine S. Hamer
Keyword(s):  
Indicator Organisms ◽  
Weighted Mean ◽  
Scaled Chrysophytes ◽  
Inference Models ◽  
Discrete Sample ◽  
Analysis Technique ◽  
Cluster Analysis Technique ◽  
Multiple Samples ◽  
Term Monitoring

Abundance of living populations of scaled chrysophytes were used to develop multiple regression models for inferring lakewater pH. Until now, all such inference models had been prepared with surface sediment remains and used to reconstruct historical (down-core) changes. We demonstrate that highly significant models can be prepared from living populations of scaled-chrysophytes which could be valuable for monitoring chronic, episodic and/or long-term changes in lakewater pH. Average weighted-mean pH and a cluster analysis technique were used to divide 33 taxa found in 26 Connecticut lakes into groups according to their distribution along a pH gradient. Two calculations of average weighted-mean pH were made; one based on data from this study and one from literature records. Inference models were developed using a single sample from each lake as well as for multiple samples collected throughout the year. The best model based on a single discrete sample yielded an R2 = 0.58 (p < 0.05); multiple samples from each lake yielded significantly higher R2 values, (between 0.75 and 0.83). Scaled chrysophytes appear to be a very valuable assemblage of indicator organisms for the long-term monitoring of lakes.

Silica-Scaled Chrysophytes in Large Tributaries of Lake Baikal

2018 ◽  
Vol 39 (2) ◽  
pp. 145-165 ◽  
Author(s):  
Anna Yu. Bessudova ◽  
Larisa M. Sorokovikova ◽  
Irina V. Tomberg ◽  
Yelena V. Likhoshway
Keyword(s):  
Lake Baikal ◽  
Scaled Chrysophytes

scholarly journals Increased relative abundance of colonial scaled chrysophytes since pre-industrial times in minimally disturbed lakes from the Experimental Lakes Area, Ontario

2018 ◽  
Vol 75 (9) ◽  
pp. 1465-1476 ◽  
Author(s):  
Graham R. Mushet ◽  
Karlee Flear ◽  
Brendan Wiltse ◽  
Andrew M. Paterson ◽  
Brian F. Cumming
Keyword(s):  
Relative Abundance ◽  
Sediment Cores ◽  
Experimental Lakes Area ◽  
Scaled Chrysophytes ◽  
Modern Distribution ◽  
Multiple Processes ◽  
High Nutrient ◽  
Northwest Ontario ◽  
Physicochemical Data ◽  
Warm Lakes

A top–bottom paleolimnological analysis of 30 undisturbed lakes in the Experimental Lakes Area (ELA) in northwest Ontario showed marked increases in the relative abundance of colonial scaled chrysophyte taxa in most lakes since pre-industrial times. The increase in abundance of colonial taxa was primarily driven by Synura sphagnicola in small, high-nutrient, and warm lakes. The colonial taxa Synura petersenii and Synura echinulata also increased in the deeper study lakes. Detailed analysis of sediment cores from six lakes revealed that these changes occurred in the early to mid-1900s. Based on the modern distribution of scaled chrysophytes relative to lake physicochemical data, we propose multiple processes that may be contributing to these changes, such as changes in lake thermal properties and historical changes in the flux of important particles and solutes to lakes. Additional mechanisms that may contribute to the observed changes are discussed, including trophic interactions and changes in limnetic pCO2. Because the ELA is relatively undisturbed, our findings provide important information on the drivers responsible for increases in colonial chrysophyte abundance, which have been documented in studies of lakes in central Ontario and northeast United States.

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