Low Success Rate in Re-Establishing European Perch in Some Highly Acidified Lakes in Southernmost Norway

Hesthagen, Trygve; Berger, Hans Mack; Schartau, Ann Kristin; Nøst, Terje; Saksgård, Randi; Fløystad, Leidulf

doi:10.1007/978-94-007-0810-5_74

Cited by 8 publications

(12 citation statements)

References 13 publications

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“…Lake L4 has also been subjected to anthropogenic acidification and subsequent restoration by liming, and it is still slightly acidified (Saksgård & Hesthagen, 1995). Perch persist in relatively acidified waters (Hesthagen et al, 1992(Hesthagen et al, , 2001, while salmonids are considered less tolerant (e.g., Rask et al, 1992;Hesthagen & Sandlund, 1995). A high rate of organic sedimentation has also been observed in lake L4 (Saksgård et al, 1999), which poses a problem for salmonids that leave eggs through the winter on the surface of, or buried in, the substratum (Fabricius & Gustafson, 1954;Fabricius & Lindroth, 1954).…”

Section: Discussionmentioning

confidence: 98%

Habitat use and diet of sympatric Arctic charr (Salvelinus alpinus) and whitefish (Coregonus lavaretus) in five lakes in southern Norway: not only interspecific population dominance?

et al. 2010

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Stable coexistence of Arctic charr and whitefish does occur in a number of native lake fish communities in Scandinavia. Even so, whitefish introductions into Arctic charr lakes have resulted in serious decline and possibly local extinction of Arctic charr. In this article, we analyze the habitat use and diet of the two species in five Norwegian lakes differing in basin shape and environmental conditions. In two of the lakes, both species are native, and appear to live in a relatively stable coexistence. Here, whitefish mainly occupy the littoral and upper pelagic zone, while Arctic charr live in the deeper habitats. Diets are generally quite different in terms of the zooplankton species eaten. In the three other lakes, either whitefish or both species have been introduced. In the shallowest lake, habitat segregation is similar to that seen in the pristine lakes, although Arctic charr appears to be on the brink of extinction. In the remaining two lakes, however, Arctic charr dominates, and occurs in higher numbers than whitefish in all the habitats. Our observations indicate that coexistence of the two species in oligotrophic and relatively pristine lakes requires an extensive profundal zone to serve as a refugium for Arctic charr. If the littoral zone is rendered inaccessible or unprofitable for whitefish due to dominance of a third competitor or predator, or as a result of lake regulation, then Arctic charr may be the dominant species.

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Section: Discussionmentioning

confidence: 98%

Habitat use and diet of sympatric Arctic charr (Salvelinus alpinus) and whitefish (Coregonus lavaretus) in five lakes in southern Norway: not only interspecific population dominance?

et al. 2010

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“…They found that perch was more tolerant of acidification and exhibited good recruitment even before liming occurred. Hesthagen et al (2001) also limed a Norwegian lake in 1997-1998 that formerly held perch populations. They restocked it and three unlimed lakes with perch and found that recruitment was successful in the limed site, but not in the other highly acidic, clear-water lakes at pH of 4.6-4.7.…”

Section: Effects To Ecosystemsmentioning

confidence: 97%

Liming for the mitigation of acid rain effects in freshwaters: A review of recent results

Clair¹,

Hindar²

2005

Environ. Rev.

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Acid rain has affected freshwater ecosystems for more than 50 years in much of northern Europe and North America. The acidification of waters, along with concurrent reduction in acid neutralization capacity, has caused deleterious changes to aquatic populations in much of these regions. To reverse some of the changes to aquatic ecosystems, a number of governmental and nongovernmental groups have applied lime and other neutralizing substances to streams, rivers, lakes, and catchments in the most affected or most ecologically valuable regions. We review the scientific literature published since the late 1980s on liming to provide an overview of successes and failures of various approaches. We discuss the rationale behind liming programs and why certain approaches may not be helpful in mitigating acidification effects under varying conditions. One of our main conclusions is that though water chemistry may be restored if only temporarily, aquatic communities probably will not return to their original states, though targeted fish species can be restored using active management approaches. The communities restored, however, are usually more unstable than those from undisturbed, or pre-acidification conditions. We also show that liming may have to be conducted for 50 to 60 years in some affected locations, which should affect the choice of approaches used in mitigation. Résumé :Les pluies acides affectent les écosystèmes d'eau douce du nord de l'Europe et de l'Amérique du Nord, depuis plus de 50 ans. Dans plusieurs de ces régions, l'acidification des eaux, ainsi que la réduction concurrente de la capacité de neutralisation des acides, a apporté des modifications néfastes dans les populations aquatiques. Afin de renverser certaines des modifications dans les systèmes aquatiques, un nombre de groupes gouvernementaux et non-gouvernementaux ont appliqué de la chaux, et autres substances neutralisantes, aux ruisseaux, aux rivières, aux lacs et aux bassins versants dans les régions les plus affectées, ou les plus importantes écologiquement. Les auteurs passent en revue la littérature scientifique depuis la fin des années 1980, sur le chaulage, afin de définir les succès et les échecs de différentes approches. Ils discutent la logique soutenant ces programmes et pourquoi certaines approches pourraient ne pas être utiles, pour mitiger les effets de l'acidification dans certaines conditions. Une des conclusions principales est que bien qu'on puisse corriger la chimie de l'eau, ne fusse que temporairement, les communautés aquatiques ne retourneront probablement pas à leur état d'origine, bien les espèces de poisson ciblées puissent être restaurées avec l'aide de techniques d'aménagement. Cependant, les communautés restaurées sont généralement moins stables que celles de milieux non-perturbés, ou celles de conditions antécédentes à l'acidification. Les auteurs montrent également que le chaulage a pu être pratiqué au cours des 50-60 dernières années dans certaines régions affectées, ce qui devrait influencer le choix des approches ...

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“…Specifically, we observed an adverse impact of pH on yellow perch abundance at pH <4.3, possibly through reduced recruitment (Degerman et al 1992;Hesthegan et al 2001). Yellow perch abundance was driven first by pH and then by biotic interactions once pH was not limiting for other fishes.…”

Section: Discussionmentioning

confidence: 76%

Identifying across‐system sources of variation in a generalist freshwater fish: correlates of total and size‐specific abundance of yellow perch

Carey¹,

Mather²

2009

Ecology of Freshwater Fish

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– Variation in fish abundance across systems presents a challenge to our understanding of fish populations because it limits our ability to predict and transfer basic ecological principles to applied problems. Yellow perch (Perca flavescens) is an ideal species for exploring environmental and biotic correlates across system because it is widely distributed and physiologically tolerant. In 16 small, adjacent systems that span a wide range of environmental and biotic conditions, yellow perch were sampled with a standard suite of gear. Water quality, morphometry, vegetation, invertebrates and fish communities were concurrently measured. Multimodel inference was used to prioritise regressors for the entire yellow perch sample and three size groups (35–80, 81–180, ≥181 mm TL). Across systems, pH and fish richness were identified as the key drivers of yellow perch abundance. At very low pH (<4.0), few fish species and few yellow perch individuals were found. At ponds with moderately low pH (4.0–4.8), numbers of yellow perch increased. Ponds with high pH (>4.8) had many other species and few yellow perch. Similar patterns for pH and fish community were observed for the two largest‐size classes. Negative interactions were observed between the medium‐ and large‐sized yellow perch and between the largest and smallest yellow perch, although interspecific interactions were weaker than expected. This examination of variability for an indicator species and its component‐size classes provides ecological understanding that can help frame the larger‐scale sampling programs needed for the conservation of freshwater fish.

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Low Success Rate in Re-Establishing European Perch in Some Highly Acidified Lakes in Southernmost Norway

Cited by 8 publications

References 13 publications

Habitat use and diet of sympatric Arctic charr (Salvelinus alpinus) and whitefish (Coregonus lavaretus) in five lakes in southern Norway: not only interspecific population dominance?

Habitat use and diet of sympatric Arctic charr (Salvelinus alpinus) and whitefish (Coregonus lavaretus) in five lakes in southern Norway: not only interspecific population dominance?

Liming for the mitigation of acid rain effects in freshwaters: A review of recent results

Identifying across‐system sources of variation in a generalist freshwater fish: correlates of total and size‐specific abundance of yellow perch

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