Aquatic vegetation of Nova Scotian lakes differing in acidity and trophic status

Srivastava, Diane S.; Staicer, Cynthia A.; Freedman, Bill

doi:10.1016/0304-3770(95)00457-b

Cited by 47 publications

(18 citation statements)

References 39 publications

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“…The inclusion of area in the linear model that defines the relationship between SD and Zc improved its prediction accuracy (from R 2 =0.75 to R 2 =0.83). This is not a surprising finding but confirms the significant influence of lake morphometry (Kolada, 2014) in agreement with Duarte and Kalff (1990) and Srivastava et al (1995).…”

Section: Discussionsupporting

confidence: 80%

A preliminary evaluation of lake morphometric traits influence on the maximum growing depth of macrophytes

2014

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Section: Discussionsupporting

confidence: 80%

A preliminary evaluation of lake morphometric traits influence on the maximum growing depth of macrophytes

2014

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“…The importance of each environmental variable can be inferred from correlations between environmental variables and the species axes. To avoid the destabilization that can occur as a result of strong correlations among environmental variables when using canonical coefficients, inter-set correlations are reported here (Srivastava 1995). To test whether trophic levels were affected by similar abiotic factors, we tested for correlations between the loadings of each environmental variable on the species data across groups.…”

Section: Richness and Diversity Metricsmentioning

confidence: 99%

Independent Gradients of Producer, Consumer, and Microbial Diversity in Lake Plankton

Longmuir

Shurin

Clasen

2007

Ecology

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Abstract. Interactions between trophic levels during food web assembly can drive positive correlations in diversity between producers, consumers, and decomposers. However, the contribution of trophic interactions relative to local environmental factors in promoting species diversity is poorly understood, with many studies only considering two trophic levels. Here we examine correlations in diversity among zooplankton, phytoplankton, and bacteria in the pelagic zone of 31 lakes in British Columbia, Canada. We sampled species diversity of zooplankton and phytoplankton through morphological identification, and bacterial genetic diversity was estimated by denaturing gradient gel electrophoresis (DGGE) of 16S rDNA polymorphisms. We looked for correlations in diversity that were independent of the abiotic environment by statistically controlling for 18 limnological variables. No significant correlations were found between the diversity of zooplankton, phytoplankton, and bacteria. In addition, the physical factors that were associated with species composition in one trophic level were independent of those that were important for another. Our results provide no support for the importance of direct feedbacks between producers, consumers, and decomposers in maintaining diversity. Zooplankton, phytoplankton, and bacterial diversity and composition are regulated independently from one another and respond to different environmental variables. These results suggest that species of lake plankton show loose trophic associations with one another due to broad diets in consumers and decomposers.

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“…Several studies have demonstrated the influence of hydrology and geomorphology on the distribution and abundance of aquatic plants in lotic and lentic systems (Lacoul and Freedman, 2006 and extensive literature cited therein). Many authors have emphasised the key importance of environmental factors, such as light availability, turbidity, humic substances or trophic status (Srivastava et al, 1995;Toivonen and Huttunen, 1995;Middelboe and Markager, 1997;Vestergaard and Sand-Jensen, 2000;Squires, 2002;Jeppesen et al, 2000), sediment characteristics (Barko and Smart, 1986) or physical factors, such as slope, wind or wave action (Duarte and Kalff, 1986) in determining aquatic vegetation patterns. The manifold of determinants influencing macrophyte communities in rivers and lakes raises the question of the diagnostic potential and applicability of macrophyte indices for ecological status assessment.…”

Section: Introductionmentioning

confidence: 99%

Parameters structuring macrophyte communities in rivers and lakes – results from a case study in North-Central Poland

Szoszkiewicz

Ciecierska

Kolada

et al. 2014

Knowl. Managt. Aquatic Ecosyst.

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Key-words: macrophytes, lakes, rivers, plant ecology, ecological assessmentWe analysed macrophyte species composition and abundance, water chemistry and hydromorphological parameters of all major river stretches and lakes in the catchment of the lowland river Wel, Poland. We studied (i) which hydromorphological and physico-chemical factors best explained macrophyte species composition, (ii) if environmental factors structuring macrophyte communities were different between rivers and lakes; and (iii) if macrophyte indices developed to indicate eutrophication correlated with nutrient concentrations. Based on two-way indicator species analysis, correlation analysis and canonical correspondence analysis, we found that river substrate was most important in structuring macrophyte species composition and abundance in rivers, while water quality parameters were most important in lakes; species richness and diversity were correlated with river size and substrate type in rivers, but not in lakes; the relative abundance of macrophyte growth forms was best explained by total organic carbon and Secchi depth in lakes, but it was not correlated with any of the water chemical or hydromorphological parameters in rivers. Irrespective of which factors best explained macrophyte community composition, macrophyte metrics developed to indicate ecological status responded most strongly to total phosphorus concentrations, both in rivers and lakes. We conclude that macrophyte metrics are valuable tools for ecological status assessment also in ecosystems where parameters other than nutrients shape macrophyte community composition. RÉSUMÉParamètres structurant les communautés de macrophytes dans les rivières et les lacsrésultats d'une étude de cas dans le Centre-Nord de la Pologne Mots-clés :macrophytes, lacs, rivières, Nous avons analysé la composition spécifique et l'abondance de macrophytes, la chimie de l'eau et les paramètres hydromorphologiques de tous les principaux tronçons des rivières et les lacs du bassin versant de la rivière de plaine Wel, en Pologne. Nous avons étudié, (i) les facteurs hydromorphologiques et physicochimiques qui expliquent le mieux la composition des espèces de macrophytes, (ii) si les facteurs environnementaux structurant les communautés de macrophytes étaient différents entre les rivières et les lacs, et (iii) si les indices macrophytiques développés pour indiquer l'eutrophisation sont corrélés avec les concentrations de nutriments. Basée sur l'analyse des espèces indicatrices, l'analyse de corrélation et l'analyse de correspondance canonique, nous avons trouvé que le substrat de la rivière était plus important dans la structuration de la composition des espèces de macrophytes et leur abondance dans les rivières, tandis que les paramètres de qualité de l'eau étaient les plus importants dans les lacs ; la richesse en espèces et la diversité sont corrélées avec la taille de la rivière et le type de substrat dans les rivières, mais pas dans les lacs ; l'abondance relative des formes de croissance de m...

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Aquatic vegetation of Nova Scotian lakes differing in acidity and trophic status

Cited by 47 publications

References 39 publications

A preliminary evaluation of lake morphometric traits influence on the maximum growing depth of macrophytes

A preliminary evaluation of lake morphometric traits influence on the maximum growing depth of macrophytes

Independent Gradients of Producer, Consumer, and Microbial Diversity in Lake Plankton

Parameters structuring macrophyte communities in rivers and lakes – results from a case study in North-Central Poland

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