Epiphyte size and taxonomy as biological indicators of ecological and toxicological factors in Lake Saint-François (Québec)

Cattaneo, Antonella; Méthot, Ginette; Pinel‐Alloul, Bernadette; Niyonsenga, Théophile; Lapierre, Louise

doi:10.1016/0269-7491(94)p4167-m

Cited by 32 publications

(12 citation statements)

References 52 publications

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“…The relatively small contribution of trace metals is, however, significant. The metal contribution in this study is comparable to that found in other studies [14,35].…”

Section: Discussionsupporting

confidence: 91%

“…In this study, the partial canonical correspondence analyses showed that about 56% of the total variation in the taxa could be explained by the variables used in the analyses. Compared with other studies [14,35], this percentage is quite high. A considerable amount of the biological variance was explained in this study by common ecological variables (45%) such as granulometry and chloride, a smaller part by trace metals (8.6%), and a very small part by variance shared by ecological variables and trace metals (2.5%).…”

Section: Discussioncontrasting

confidence: 74%

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Contribution of trace metals in structuring in situ macroinvertebrate community composition along a salinity gradient

Peeters

Gardeniers

Koelmans

2000

Enviro Toxic and Chemistry

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Macroinvertebrates were studied along a salinity gradient in the North Sea Canal, The Netherlands, to quantify the effect of trace metals (cadmium, copper, lead, zinc) on community composition. In addition, two methods for assessing metal bioavailability (normalizing metal concentrations on organic carbon and on the smallest sediment fraction) were compared. Factor analyses showed that normalizing trace metals resulted in an improved separation of trace metals from ecological factors (depth, organic carbon, granulometry, and chloride). The variation in the macroinvertebrate data was partitioned into four sources using partial canonical correspondence analysis, with the partitions being purely ecological factors, purely trace metals, mutual ecological factors and trace metals, and unexplained. Partial canonical correspondence analysis applied to total and normalized trace metal concentrations gave similar results in terms of unexplained variances. However, normalization on organic carbon resulted in the highest percentage of variation explained by purely ecological factors and purely trace metals. Accounting for bioavailability thus improves the identification of factors affecting the in situ community structure. Ecological factors explained 45.4% and trace metals 8.6% of the variation in the macroinvertebrate community composition in the ecosystem of the North Sea Canal. These contributions were significant, and it is concluded that trace metals significantly affected the community composition in an environment with multiple stressors. Variance partitioning is recommended for incorporation in further risk assessment studies.

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“…The relatively small contribution of trace metals is, however, significant. The metal contribution in this study is comparable to that found in other studies [14,35].…”

Section: Discussionsupporting

confidence: 91%

Section: Discussioncontrasting

confidence: 74%

Contribution of trace metals in structuring in situ macroinvertebrate community composition along a salinity gradient

Peeters

Gardeniers

Koelmans

2000

Enviro Toxic and Chemistry

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“…It seems that a relationship may exist between diatom size and TP along a short trophy gradient, but that relationships may be strongly attenuated in the overall trophy gradient in Quebec streams. Cattaneo et al (1995) suggested exploiting a possible relationship between diatom size and trophy in order to find an alternative indicator for nutrient input. In light of our results, we do not recommend using diatom size as an indicator of trophy in Quebec streams.…”

Section: Small and Large Diatom Taxamentioning

confidence: 99%

Diatoms and biomonitoring: should cell size be accounted for?

et al. 2006

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Despite the fact that biovolume calculation is a common procedure in most phytoplankton and periphyton studies, diatom community analyses are usually based on relative abundance data. In a biomonitoring context, a community metric that accounts for cell size could be of interest due to the potential differences that might exist in nutrient uptake between large and small-sized species. This paper addresses the question of whether diatom community analysis should be based on relative abundance, biovolume or cell surface. The results show that although community structure expressed as relative proportion of taxa varied according to the metric used, the ordinations conducted with each metric were similar. The explained percentage of species variance was slightly higher with the relative abundance metric compared to the metrics based on relative biovolume or cell surface area. Partial CCAs showed that each water chemistry variable generally explained a higher portion of species variance when the relative abundance was used. The analyses conducted with two size groups (small and large taxa) expressed as relative abundance and relative biovolume showed similar results. Moreover, our data showed that there is no significant relationship between diatom size and total phosphorus. According to these results, it seems that relative abundance would be the most appropriate metric to use for biomonitoring purposes. The biovolume and cell surface area calculations added substantially to the total analysis time due to the numerous measurements required, but did not improve the variance explained in community structure, and site ordinations were not significantly different.

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“…The algal adaptive strategies more commonly associated to environmental alterations are changes in size classes (Sprules & Munawar, 1986;Kamenir et al, 2004), growth forms (Margalef, 1978;Reynolds, 1997), and adherence forms mainly for attached community. For periphyton, Cattaneo et al (1995) observed that changes in algal size distribution and growth forms could be indicative of the system's trophic state (Cattaneo, 1987) and contamination (Cattaneo, 1992). Pringle (1990) reported that diatom functional groups responded differently to river enrichment.…”

Section: Introductionmentioning

confidence: 96%

Periphytic algal community adaptive strategies in N and P enriched experiments in a tropical oligotrophic reservoir

Ferragut

Bicudo

2010

Hydrobiologia

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This study aimed at evaluating periphytic algae adaptive strategies, including size class, growth, and adherence forms, and the CRS functional groups model under nitrogen and phosphorus artificial enrichment in a Brazilian tropical shallow and oligotrophic reservoir. Four treatments were designed using enclosures (n = 3) filled with 185 L of reservoir water: control (no nutrient addition), P? (isolated P addition, N-limiting condition); N? (isolated N addition, P-limiting condition); and NP? (combined addition, no limitation). N:P ratios were maintained throughout the experiment. Glass slides were used for periphyton growth, and sampling campaigns were carried out at short regular intervals (3-5 days) over a 31-day succession. Enrichment favored replacement of flagellates and loosely attached (mobile) forms by firmly attached mainly prostrate and entangled forms over succession. Isolated or combined P addition favored C-S-strategists green algae, whereas P limitation kept R-strategists over succession, promoting R-Cyanobacteria under high P limitation. Our results were supported by the species density and biovolume due to the dominance of small size classes (smallsized classes) in the community (nano and picoperiphyton). Overall, only the CRS strategies were more predictive of the experimental nutritional conditions.

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Epiphyte size and taxonomy as biological indicators of ecological and toxicological factors in Lake Saint-François (Québec)

Cited by 32 publications

References 52 publications

Contribution of trace metals in structuring in situ macroinvertebrate community composition along a salinity gradient

Contribution of trace metals in structuring in situ macroinvertebrate community composition along a salinity gradient

Diatoms and biomonitoring: should cell size be accounted for?

Periphytic algal community adaptive strategies in N and P enriched experiments in a tropical oligotrophic reservoir

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