Analysis of the Phytoplankton Composition of 95 Labrador Lakes, with Special Reference to Natural and Anthropogenic Acidification

Earle, J. C.; Duthie, H. C.; Scruton, D. A.

doi:10.1139/f86-224

Cited by 17 publications

(6 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These factors may be responsible for elevated phytoplankton parameters of the Bolshezemelskaya tundra relative to Western Siberia thaw ponds (54-158 taxa; 0.3-54 mg wet .L x1 biomass of the former). Similar number of phytoplankton species was reported for lakes of Finland (Heinonen, 1980) and the Labrador Lakes (Earle and Duthie, 1986): 52-62 and 61, respectively.…”

Section: Comparison With Other Arctic and Subarctic Lakessupporting

confidence: 81%

Seasonal dynamics of phytoplankton in acidic and humic environment in thaw ponds of discontinuous permafrost zone

Pavlova

Pokrovsky

Manasypov

et al. 2016

Ann. Limnol. - Int. J. Lim.

View full text Add to dashboard Cite

Despite the high importance of shallow thaw ponds (thermokarst lakes) of Western Siberia in both surface coverage and carbon dioxide and methane emission to the atmosphere, their planktonic component remains poorly characterized. This work reports the first results of phytoplankton analysis of thaw lakes and ponds sampled during spring flood, open water season and ice formation. The lakes, located within the discontinuous/sporadic permafrost (66xN), are shallow (0.5-1.5 m depth), acidic (4.0 j pH j 6.1) and highly organic (10-40 mg.L x1 of DOC) with low concentrations of total dissolved solid (10-30 mg.L x1). In the plankton community of 20 lakes of variable size (from 700 m 2 to 1.8 km 2), we identified 134 taxa of algae with the dominance of green algae (33-60% of total), cyanobacteria (11-14%) and dinoflagellates (7-14%). The total cell number (N) ranged from 20 to 83 million cell.L x1 and the biomass (B) ranged from 0.1 to 37 mg wet .L x1 with the dominance of green algae, Dinophyta and Charophyta Ulothrix spp., Bambusina brebissonii. A Principal Component Analysis (PCA) revealed two possible factors responsible for phytoplankton variation: dissolved inorganic carbon, positively acting on cell number and the biomass of cyanobacteria, and DOC, Si and Fe, controlling the number of diatoms and green algae. In August, there was a general increase of both N and B as pH increased. Colony-forming cyanobacteria and green algae with thick capsules were highly abundant during all seasons. The specific acidic and organic-rich context of the shallow thermokarst waters subjected to full freezing in winter is one of the major factors limiting both the biodiversity and the biomass of the phytoplankton in these water objects.

show abstract

Section: Comparison With Other Arctic and Subarctic Lakessupporting

confidence: 81%

Seasonal dynamics of phytoplankton in acidic and humic environment in thaw ponds of discontinuous permafrost zone

Pavlova

Pokrovsky

Manasypov

et al. 2016

Ann. Limnol. - Int. J. Lim.

View full text Add to dashboard Cite

show abstract

“…The boreal forested regions in Canada (Earle et al 1986), the United States (Driscoll and Newton 1985;Baker et al 1991), and northern Europe (Braake et al 1987) contain an abundance of waters with low pH and high organic acidity. Many species of odonates are noted to utilize these bog-pond environments extensively (Walker and Corbet 1975;Hilton 1987).…”

Section: Discussionmentioning

confidence: 99%

The distribution of dragonfly nymphs across a pH gradient in south-central Ontario lakes

Pollard¹,

Berrill²

1992

Can. J. Zool.

View full text Add to dashboard Cite

~L L A R D , J. B., and BERRILL, M. 1992. The distribution of dragonfly nymphs across a pH gradient in south-central Ontario lakes. Can. J. Zool. 70: 878-885. Exuviae of 37 species of dragonflies were collected from the emergent vegetation of 19 small ( < 3 5 ha) lakes across a pH gradient (range 4.9-8.1) in south-central Ontario to assess the effect of low environmental pH on species richness and diversity. The number of species present in a lake was not significantly correlated with lake pH. Two measures of diversity (Keefe and Bergersen's TU and McIntosh's M ) indicate an increase in species diversity with decreasing lake pH. Species shifts in the communities were also correlated with lake pH: five species were apparently excluded from lakes with a midsummer epilimnetic pH below 5.8, and seven species were apparently restricted to lakes with a pH of less than 6.2.

show abstract

“…These results are in line with those of other studies. For example, factor analysis of 22 abiotic parameters of 95 Labrador lakes reduced data to six factors including hardness (especially alkalinity, calcium, and magnesium) and dystrophy (especially dissolved organic carbon and color) (Earle et al, 1986). Based on the PCA ordination of 73 small shallow lakes in Wisconsin, Dodson et al (2005) reported three axes including parameters associated with aquatic vegetation; variables related to the water source, water color, nutrient concentrations (positively) and conductivity (negatively).…”

Section: Large Scale Correlates Of Lacustrine Diversitymentioning

confidence: 99%

Community analysis of Belarusian lakes: correlations of species diversity with hydrochemistry

2008

View full text Add to dashboard Cite

Our purpose was to explore relationships of freshwater planktonic and benthic community species richness with water chemistry parameters using a dataset of biological, chemical, and physical data from 550 lakes. This was done using multivariate (ordination), graphical, and correlation analyses. Although the lakes are rather similar in location (Belarus) and in being mostly eutrophic, they do show variations in water chemistry. We ordinated lakes by water chemistry variables, and then looked for correlations between the ordination axes and species richness in 10 taxonomic groups: Cyanobacteria, Chlorophyta, Bacillariophyta, Cladocera, Copepoda, Rotatoria, Mollusca, Trichoptera, Chironomidae, and aquatic macrophytes. The first four Principal Components Analysis (PCA) axes explained about 67% of the total variability in water chemistry. The axes represent water hardness (DIC, dissolved inorganic carbon), organic content (DOC, dissolved organic carbon), nutrients, and chlorides and sulfates. The PCA ordination revealed environmental gradients, but not the distinctive clusters of lakes. Species richness was most strongly correlated with the first PCA axis (DIC), which accounted for 29% of the total variation in water chemistry. Species richness was positively correlated with DIC for eight of 10 taxonomic categories. The second PCA axis (DOC), which accounted for 20% of total variation in water chemistry, was correlated with species richness in the three phytoplankton groups, and with chironomid species richness. The third PCA axis (nutrients, especially nitrogen, 11%) was correlated with species richness of copepoda, chironomids, and macrophytes. The fourth PCA axis (chloride and sulfate) accounted for only 7% of the total variance in water chemistry, and was significantly negatively correlated with species richness of rotifers, molluscs, and chironomids. In addition to these linear correlations, there were several significant non-linear relationships. DIC variables showed curvilinear (hump-shaped) relationship with benthos (all groups combined) and especially with molluscs, and DOC variables-with phytoplankton and benthos. Each community, and often separate taxonomic groups within community have their own optimal ranges of chemical concentrations, and various water chemistry variables showed significant curvilinear relationships with biodiversity, suggesting that the diversity of different Handling editor: S. Declerck

show abstract

Analysis of the Phytoplankton Composition of 95 Labrador Lakes, with Special Reference to Natural and Anthropogenic Acidification

Cited by 17 publications

References 4 publications

Seasonal dynamics of phytoplankton in acidic and humic environment in thaw ponds of discontinuous permafrost zone

Seasonal dynamics of phytoplankton in acidic and humic environment in thaw ponds of discontinuous permafrost zone

The distribution of dragonfly nymphs across a pH gradient in south-central Ontario lakes

Community analysis of Belarusian lakes: correlations of species diversity with hydrochemistry

Contact Info

Product

Resources

About