The impact of water-level regulation on littoral macroinvertebrate assemblages in boreal lakes

Aroviita, Jukka; Hämäläinen, Heikki

doi:10.1007/978-1-4020-9192-6_6

Cited by 37 publications

(53 citation statements)

References 18 publications

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“…Guan and Wiles (1998) found that signal crayfish in a British river fed on Coleoptera and, although consumption varied with crayfish age and season, the results suggested potential reduction of these taxa by signal crayfish predation. Other studies have shown that riffle beetles are especially vulnerable to disturbances in the aquatic environment (Aroviita and Hämäläinen, 2008;Elliot, 2008). Hence the lower riffle beetle densities at crayfish sites might stem from the vulnerability to predation during the semivoltine life-cycle which is mostly aquatic, in combination with poor colonisation abilities (Aroviita and Hämäläinen, 2008;Elliot, 2008).…”

Section: Discussionmentioning

confidence: 99%

“…Other studies have shown that riffle beetles are especially vulnerable to disturbances in the aquatic environment (Aroviita and Hämäläinen, 2008;Elliot, 2008). Hence the lower riffle beetle densities at crayfish sites might stem from the vulnerability to predation during the semivoltine life-cycle which is mostly aquatic, in combination with poor colonisation abilities (Aroviita and Hämäläinen, 2008;Elliot, 2008). Riffle beetles have generally limited flying ability, which is thought to be one reason for their rather slow colonisation (Elliot, 2008), and this could be particularly important in lake littoral zones where there is no possibility to drift with flow as in rivers.…”

Section: Discussionmentioning

confidence: 99%

“…During the study period, annual variation between maximum and minimum water level averaged 54 cm (Hertta database, Finnish Environment Institute). This small amplitude of water-level regulation is not likely to significantly affect the littoral communities of boreal lakes (Aroviita and Hämäläinen, 2008;Sutela et al, 2011). Nevertheless, we obtained water level (m.a.s.l.)…”

Section: Environmental Factorsmentioning

confidence: 99%

“…Nevertheless, we obtained water level (m.a.s.l.) data for Lake Päijänne (Kalkkistenkoski, 61 • 16 N, 25 • 35 E) from the Hertta-database (Finnish Environment Institute), and used the mean water level in July and lowest water level during winter in the analysis as candidate predictors of community variability as those have found to explain littoral invertebrate community variability among regulated lakes (Aroviita and Hämäläinen, 2008).…”

Section: Environmental Factorsmentioning

confidence: 99%

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Are the effects of an invasive crayfish on lake littoral macroinvertebrate communities consistent over time?

Ruokonen

Ercoli

Hämäläinen

2016

Knowl. Manag. Aquat. Ecosyst.

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-Management of invasive species requires assessment of their effects on recipient ecosystems. However, impact assessment of invasive species commonly lacks a long-term perspective which can potentially lead to false conclusions. We examined the effects of the invasive signal crayfish (Pacifastacus leniusculus Dana) on the stony littoral macroinvertebrate communities of a large boreal lake and assessed the extent to which the patterns observed in previous short-term studies were stable over time. We used temporal macroinvertebrate data collected in five consecutive years from a site with a well-established crayfish population, a site with no crayfish and a site where crayfish had been recently introduced. Our results revealed that signal crayfish had temporally rather consistent negative effects on the benthic macroinvertebrate assemblages but that the effects might be limited to certain taxa, in particular Gastropoda and Coleoptera. We also observed increases in Gastropoda density and taxa richness following a decline in crayfish density, indicating that the recovery of invertebrate assemblages might be fast. Hence, negative effects on benthic macroinvertebrates can likely be minimized by effective control of the signal crayfish population.Key-words: crayfish / invasive species / lake / littoral community / macroinvertebrates Résumé -Les effets d'une écrevisse invasive sur les communautés de macroinvertébrés littoraux d'un lac sontelles stables au fil du temps ?. La gestion des espèces envahissantes exige une évaluation de leurs effets sur les éco-systèmes récepteurs. Toutefois, l'évaluation de l'impact des espèces envahissantes manque souvent d'une perspective à long terme qui peut potentiellement conduire à des conclusions erronées. Nous avons examiné les effets de l'écrevisse signal invasive (Pacifastacus leniusculus Dana) sur les communautés de macroinvertébrés d'un littoral pierreux d'un grand lac boréal et évalué dans quelle mesure les tendances observées dans les études précédentes à court terme ont été stables au fil du temps. Nous avons utilisé les données temporelles de macroinvertébrés recueillies pendant cinq années consécutives d'un site avec une population d'écrevisses bien établie, d'un site sans écrevisses et d'un site où les écrevisses avaient été introduites récemment. Nos résultats ont révélé que les écrevisses signal ont eu des effets négatifs temporellement plutôt stables sur les assemblages de macroinvertébrés benthiques, mais que les effets pourraient être limités à certains taxons, notamment gastéropodes et coléoptères. Nous avons également observé une augmentation de densité des gastéropodes et de richesse en taxons suite à une baisse de la densité des écrevisses, ce qui indique que la récupération des assemblages d'invertébrés pourrait être rapide. Par conséquent, les effets négatifs sur les macroinvertébrés benthiques peuvent probablement être minimisés par un contrôle efficace de la population d'écrevisses signal.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Environmental Factorsmentioning

confidence: 99%

Section: Environmental Factorsmentioning

confidence: 99%

See 2 more Smart Citations

Are the effects of an invasive crayfish on lake littoral macroinvertebrate communities consistent over time?

Ruokonen

Ercoli

Hämäläinen

2016

Knowl. Manag. Aquat. Ecosyst.

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“…The construction of dams and reservoirs has changed the natural patterns of WLF in many freshwater systems worldwide (Dynesius and Nilsson, 1994;Tharme, 2003;Aroviita and Hämäläinen, 2008), leading to a great change in diversity (Hill et al, 1998;New and Xie, 2008;Hammersmark et al, 2009;Raulings et al, 2010) and coverage (Jansson et al, 2000;Van Geest et al, 2007) of macrophytes. However, the degradation of aquatic vegetation has often been explained by increased nutrient loads (Scheffer and Carpenter, 2003;Tracy et al, 2003), and little attention was paid to hydrological alterations such as WLF in lakes (Van Geest et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Developing water level regulation strategies for macrophytes restoration of a large river-disconnected lake, China

Zhang

Liu

Wang

2014

Ecological Engineering

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An index of human alteration of lake shore morphology

Miler

Porst

McGoff

et al. 2014

Aquatic Conservation

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ABSTRACT1. Morphological degradation constitutes one of the most severe threats to the ecological integrity of lakes. The development of biotic assessment methods for human lake shore alterations using littoral macroinvertebrates requires quantification of the degree of degradation by a stressor index and is complicated through simultaneous physical pressures that alter natural habitat structure.2. The Lake Habitat Survey (LHS) method and macroinvertebrate sampling were used to produce a pan-European dataset of morphological lake shore degradation and macroinvertebrate densities covering 51 lakes in seven countries and across four geographical regions -northern, western, southern and central Europe.3. Lake Habitat Survey parameters that differed significantly among three categories of morphological pressure were combined to develop the stressor index components 'Number of habitats', 'Habitat diversity', 'Total percentage volume inhabited by macrophytes', 'Sum of macrophyte types', 'Sum of vegetation cover types', 'Sum of coarse woody debris/roots/overhanging vegetation', 'Pressure index' (number of human disturbance sources) and 'Natural/artificial dominant land cover type '. 4. Stressor index components were tested for cross-correlations and for differences among pressure levels. The final composition of the stressor index was optimized for the four studied geographical regions in Europe. The resulting stressor index correlated more strongly with macroinvertebrate metrics than simpler site-specific LHS parameters or the HabQA index developed previously in one lake in north-western Europe.5. The stressor index developed provides deeper insight into the morphological pressures that affect littoral invertebrate communities. The results also support the use of LHS to quantify morphological stressors at sampling site level, which can ease developing other multimetric bioassessment methods.6. The stressor index offers the possibility for wide and regional specific application to assess hydromorphological pressures on lakes to assist conservation planning and management and further global efforts to develop and test biotic assessment methods for lakes.

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The impact of water-level regulation on littoral macroinvertebrate assemblages in boreal lakes

Cited by 37 publications

References 18 publications

Are the effects of an invasive crayfish on lake littoral macroinvertebrate communities consistent over time?

Are the effects of an invasive crayfish on lake littoral macroinvertebrate communities consistent over time?

Developing water level regulation strategies for macrophytes restoration of a large river-disconnected lake, China

An index of human alteration of lake shore morphology

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