Fish Status Survey of Nordic Lakes: Effects of Acidification, Eutrophication and Stocking Activity on Present Fish Species Composition

Tammi, Jouni; Appelberg, Magnus; Beier, Ulrika; Hesthagen, Trygve; Lappalainen, Antti; Rask, Martti

doi:10.1639/0044-7447(2003)032[0098:fssonl]2.0.co;2

Cited by 37 publications

(57 citation statements)

References 13 publications

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“…Since predatory fishes are among the most frequently stocked species, the use of pikeperch as an indicator of anthropogenic degradation other than fisheries may be questioned. Whereas pikeperch introduction into waters previously not inhabited by this species may change presence and absence structures of fish communities (Tammi et al ., 2003), however, there was little impact of stocking intensity on year‐class strengths and hence population abundances or biomasses of the related walleye Sander vitreum (Mitchill)(Li et al ., 1996; Parsons & Pereira, 2001). Accordingly, in an approach as used here, where absolute unit catches were compared along a productivity gradient of lakes, a positive correlation between pikeperch biomass and chlorophyll a probably reflects that pikeperch populations increase with eutrophication even in the absence of stocking (Olin et al ., 2002).…”

Section: Discussionmentioning

confidence: 95%

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Correlations between type‐indicator fish species and lake productivity in German lowland lakes

Garcia

Diekmann

Brämick

et al. 2006

Journal of Fish Biology

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Morphotypes for 67 lakes in the German lowlands were derived, based on maximum depth and mixis type. A threshold of 11 m maximum depth was identified to be the best level to discriminate shallow from deep lake morphotypes. The fish communities in these two morphotypes were significantly different. Indicator species analyses based on fish biomasses found vendace Coregonus albula in deep lakes and ruffe Gymnocephalus cernuus, bream Abramis brama, white bream Abramis bjoerkna, roach Rutilus rutilus, pikeperch Sander lucioperca and small perch Perca fluviatilis in shallow lakes to be the most representative species of their communities. Lake productivity was closely related to biomass and in part abundance of the type-indicator species, with vendace declining with increasing chlorophyll a concentration in the deep lakes, whereas biomass of pikeperch, bream, white bream and ruffe increased and biomass of small perch decreased with increasing chlorophyll a. These results indicate that assessment of ecological integrity of lakes by their fish fauna is generally possible, if lakes are initially separated according to a depth-related morphotype before the assessment, and if eutrophication is considered to be the main anthropogenic degradation.

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Section: Discussionmentioning

confidence: 95%

“…Another factor that may strongly shape European fish communities is fisheries management and in particular desired stocking of target fish species (Tammi et al ., 2003). Detailed data on fisheries effort and stocking were not available for the lakes included in the present study.…”

Section: Discussionmentioning

confidence: 99%

Correlations between type‐indicator fish species and lake productivity in German lowland lakes

Garcia

Diekmann

Brämick

et al. 2006

Journal of Fish Biology

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“…The number of studies that correlate anthropogenic degradation and the ecological state of waters based on fish communities has increased since the development of an index of biotic integrity (IBI) for warm‐water streams in the mid‐western USA (Karr 1981). In Europe, however, studies assessing the ecological quality of lentic waterbodies through their fish community composition are still surprisingly rare and restricted to Alpine and Scandinavian lakes (Appelberg, Bergquist & Degerman 2000; Gassner, Tischler & Wanzenböck 2003; Tammi et al . 2003) and waterbodies in Belgium (Belpaire et al .…”

Section: Introductionmentioning

confidence: 99%

Habitat‐specific fishing revealed distinct indicator species in German lowland lake fish communities

Diekmann

Brämick

Lemcke³

et al. 2005

Journal of Applied Ecology

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Summary 1.With the implementation of the European Water Framework Directive, the need for studies on European lake fish communities has increased to include lake type-specific fish community features. Although several standardized fish sampling methodologies are available, most previous fish community studies lack a simultaneous consideration of the littoral, benthic and pelagic habitats of lakes. 2.To compare habitat-specific fish communities, we sampled 67 lakes in the northeastern German lowlands using Norden multimesh gillnets in the benthic and pelagic habitats, and electrofishing in the littoral zone. 3. Standardized catches and diversity of the fish community differed among the three habitats sampled. Species richness and Shannon diversity were higher in benthic and littoral habitats compared with pelagic habitats. Overall, the benthic habitat had the most homogeneous catches and contained the most diverse fish community. 4. Cluster analysis and subsequent indicator value analyses produced substantially different optimum cluster numbers for the three habitat-specific fish communities. Based on the significant differences in fish community composition among the habitats, a simultaneous consideration of numerical fish catches from all habitats was performed using standardized fish abundances. 5. The cluster analysis of the combined abundances resulted in three groups of lakes that were indicated by three fish species. Morphological descriptors (volume, area, maximum depth, mean depth) and descriptors related to the trophic situation (conductivity, total phosphorus) clearly distinguished the three lake groups. 6. All three habitats showed distinct characteristics with respect to either species diversity or relative species' abundances. Our results do not support a conceptual model for all lakes of a gradual succession of fish communities as a result of eutrophication. 7. Synthesis and applications. Only simultaneous consideration of all lake habitats will fulfil the requirements of the Water Framework Directive for evaluating the ecological integrity of lakes. A pre-separation into at least two community types according to lake morphology is necessary before the deviation of the present fish community relative to a reference state can be determined.

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“…The dominant native fish species in subarctic Fennoscandian lakes is the monomorphic large sparsely rakered (LSR) whitefish (Coregonus lavaretus), which is an ecological generalist utilising both pelagic and benthic prey (Kahilainen et al, 2007;Harrod, Mallela & Kahilainen, 2010). This region represents the northern range limit for percid species; perch (Perca fluviatilis) and ruffe (Gymnocephalus cernuus) (Tammi et al, 2003), both of which have potential to expand their range northwards in parallel with increasing ambient water temperatures. This region represents the northern range limit for percid species; perch (Perca fluviatilis) and ruffe (Gymnocephalus cernuus) (Tammi et al, 2003), both of which have potential to expand their range northwards in parallel with increasing ambient water temperatures.…”

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confidence: 99%

Interactions between invading benthivorous fish and native whitefish in subarctic lakes

et al. 2013

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Summary Many species are expanding their distribution towards higher latitudes and altitudes in response to climate change. These range shifts are expected to change fish community structure and alter food‐web dynamics in subarctic lakes. However, the impacts of invading species on native fish and invertebrate prey communities remain understudied. The trophic ecology of invasive species determines the likelihood of direct resource competition with native taxa. In Northern Europe, perch (Perca fluviatilis), a trophic generalist, and ruffe (Gymnocephalus cernuus), a benthic specialist, are expanding their distribution ranges northwards, colonising lakes inhabited by a native generalist, whitefish (Coregonus lavaretus). We predicted that increased fish diversity and density would deplete the invertebrate community and increase resource competition between native and invasive species. To assess the degree of resource competition between native and invasive species, we compared (i) fish and invertebrate community structure; (ii) diet and stable carbon and nitrogen ratios of whitefish, ruffe and perch and (iii) growth, condition and relative population size of whitefish in two non‐invaded lakes with two lakes containing one and two lakes containing both invasive species. Each lake was sampled on a single occasion between August and September. Benthic macroinvertebrate density and community structure were unaffected by increased consumer diversity, while top‐down control of pelagic zooplankton density and size was evident in lakes with increased fish diversity. Differences in diet and stable isotope ratios were evident between all whitefish populations, although these were not directly related to the presence of invasive species. Specialised adaptations of invasive species may confer a competitive advantage in invaded lakes; ruffe dominated the profundal niche, while perch displayed an ontogenetic shift to piscivory, reducing niche overlap with native whitefish. Growth rate and population density of whitefish were largely independent of fish community structure and were governed by local variations in lake productivity. However, there was a sign of lowered condition of whitefish in invaded systems. Shallow and more productive lakes with higher food availability supported populations of native and invasive species. Our findings indicate that trophic specialisations of invasive species play a key role in determining their impacts on the systems they invade. This study focussed on early stages of invasion, and the outcome of species interactions may change following the establishment of new species. In addition, these impacts will not be uniform across the invaded landscape as lake‐specific variations in morphometry and resource availability will alter the competitive balance between native and invasive species.

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Fish Status Survey of Nordic Lakes: Effects of Acidification, Eutrophication and Stocking Activity on Present Fish Species Composition

Cited by 37 publications

References 13 publications

Correlations between type‐indicator fish species and lake productivity in German lowland lakes

Correlations between type‐indicator fish species and lake productivity in German lowland lakes

Habitat‐specific fishing revealed distinct indicator species in German lowland lake fish communities

Interactions between invading benthivorous fish and native whitefish in subarctic lakes

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