Response of zooplankton to nutrient enrichment and fish in shallow lakes: a pan‐European mesocosm experiment

Vakkilainen, Kirsi; Kairesalo, Timo; Hietala, Jaana; Balayla, David; Bécares, Eloy; Bund, Wouter van de; Donk, Ellen Van; Fernández‐Aláez, Margarita; Gyllström, Mikael; Hansson, Lars‐Anders; Miracle, María Rosa; Moss, Brian; Romo, Susana; Rueda, Juan; Stephen, Deborah

doi:10.1111/j.1365-2427.2004.01300.x

Cited by 72 publications

(82 citation statements)

References 52 publications

(151 reference statements)

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“…The consequences for the zooplankton community of this temporal variation in predation rate should be that medium-sized zooplankton are less affected by fish predation than larger ones, not only because of size-selective predation by adult fish but also because of a shorter period of, and less pronounced, predation from 0+ fish. This development is also commonly observed in many lakes with high 0+ fish recruitment (Post and McQueen 1987;Hansson et al 1998;Vakkilainen et al 2004). It may also be noted that after the decline in zooplankton abundances, neither medium-sized nor large zooplankton populations recovered (Fig.…”

Section: Discussionmentioning

confidence: 84%

Consequences of fish predation, migration, and juvenile ontogeny on zooplankton spring dynamics

Hansson

Nicolle

Brodersen

et al. 2007

Limnology & Oceanography

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123

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In order to disentangle if and when resource supply and adult and young-of-the-year (0+) fish predation affect zooplankton dynamics during spring, we monitored zooplankton during three consecutive years in a lake in southern Sweden. We also experimentally assessed 0+ fish predation rates and estimated changes in predation rates of adult fish on zooplankton. Decline in abundances of large-sized zooplankters in early spring was not caused by 0+ fish predation. Instead, this decline was most likely a combined result of size-selective predation from adult fish (stationary in the lake and from those returning from surrounding streams) and competition for diminishing algal food resources. On the other hand, the decline in medium-sized zooplankton in the lake during spring was strongly affected by 0+ fish. Hence, during spring, zooplankton are facing predation both from adult fish selecting large prey and from 0+ fish, which start feeding on small-sized prey and eventually switch to larger. Neither predation by different ontogenetic stages of fish (adult and 0+) nor resource supply shape the zooplankton spring dynamics, but rather they affect the timing and strength of these events. 0+ cyprinids tend to have stronger effect on zooplankton dynamics than other taxa of 0+ fish. A combination of predation from adult and 0+ fish during spring is the main mechanism behind the crash of the zooplankton community, which in many lakes leads to the termination of the clear-water phase.The spring, with its rapidly increasing temperature, is an important period for the development of the zooplankton summer community in temperate regions, mirrored in dramatic fluctuations in population densities. These conspicuous spring fluctuations are due to changes in reproductive rates and resource supply but also to increased feeding rates from predators. The total predation rate on zooplankton may be divided into several components. First, there is predation from adult fish present in the lake year-round, and the seasonal fluctuations in their predation rate is driven by temperature (Lessmark 1983) and is generally most intense on larger zooplankton size classes (Brooks and Dodson 1965). Second, a dramatic change in the predation rate occurs with the hatching and recruitment of young-of-the-year fish (0+) in the spring. They start their life by feeding on small zooplankton but are within a few weeks able to feed on larger size classes (Mills and Forney 1983;Mehner and Thiel 1999). Thus, smaller size classes of zooplankton should suffer from 0+ predation earlier in the season than larger ones. It has previously been suggested that 0+ predation drives succession in the zooplankton community (Cryer et al. 1986;Gliwicz and Pijanowska 1989), whereas other studies have concluded that 0+ fish predation probably is too weak to explain zooplankton spring dynamics (Cushing 1983;Boersma et al. 1996) and that instead other processes, such as competition and resource supply (i.e., bottom-up processes) are more important. In a review, Mehner and Th...

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Section: Discussionmentioning

confidence: 84%

Consequences of fish predation, migration, and juvenile ontogeny on zooplankton spring dynamics

Hansson

Nicolle

Brodersen

et al. 2007

Limnology & Oceanography

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123

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“…Alternative explanations for the association of taxon composition and the elevated P-levels are (i) a general invasion of D. galeata in this region during the 1950s and 1960s or (ii) reduced sexual reproduction of D. galeata in Lake Greifensee during the first part of the past century. A simultaneous invasion of D. galeata into both lakes seems unlikely, because D. galeata was not able to invade lakes that maintained their oligotrophic status throughout the past century (e.g., Lake Brienz) (23 (25,26). Further, large genetic differences (3 fixed loci) among the initial D. galeata invaders of both lakes reject the hypothesis of a simultaneous regional invasion.…”

Section: Discussionmentioning

confidence: 87%

“…This observation suggests that other (environmental) factors limited an earlier establishment of D. galeata in Greifensee. One of the most important factors, other than P, which alters Daphnia communities, is fish predation (26). Because predation has different impacts in shallow and deep lakes (e.g., predator control is higher in shallow lakes than in deep lakes) (30), Lake Constance and Greifensee are expected to respond differently.…”

Section: Discussionmentioning

confidence: 99%

The impact of human-made ecological changes on the genetic architecture of Daphnia species

Brede

Sandrock

Straile

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

119

178

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The overenrichment (eutrophication) of aquatic ecosystems with nutrients leading to algal blooms and anoxic conditions has been a persistent and widespread environmental problem. Although there are many studies on the ecological impact of elevated phosphorus (P) levels (e.g., decrease in biodiversity and water quality), little is known about the evolutionary consequences for animal species. We reconstructed the genetic architecture of a Daphnia species complex in 2 European lakes using diapausing eggs that were isolated from sediment layers covering the past 100 years. Changes in total P were clearly associated with a shift in species composition and the population structure of evolutionary lineages. Although environmental conditions were largely reestablished after peak eutrophication during the 1970s and 1980s, original species composition and the genetic architecture of species were not restored but evolved along new evolutionary trajectories. Our data demonstrate that anthropogenically induced temporal alterations of habitats are associated with long-lasting changes in communities and species via interspecific hybridization and introgression.biological archive ͉ eutrophication ͉ hybridization ͉ introgression ͉ invasiveness

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“…Various studies since have corroborated this hypothesis at least qualitatively (e.g. Hessen et al, 1995;Shurin, 2001;Shurin and Allen, 2001;Vakkilainen et al, 2004;Hülsmann et al, 2005) with Shurin (2001) highlighting the importance of a diverse regional species pool in determining the impact of predation on zooplankton communities. In potential agreement with this, the present study showed that proximity to other water bodies -potential sources of immigrant taxa -was linked with zooplankton species richness.…”

Section: Correlates Of Zooplankton Species Richness and Compositionmentioning

confidence: 77%

A global analysis of zooplankton in natural and artificial fresh waters

2013

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Response of zooplankton to nutrient enrichment and fish in shallow lakes: a pan‐European mesocosm experiment

Cited by 72 publications

References 52 publications

Consequences of fish predation, migration, and juvenile ontogeny on zooplankton spring dynamics

Consequences of fish predation, migration, and juvenile ontogeny on zooplankton spring dynamics

The impact of human-made ecological changes on the genetic architecture of Daphnia species

A global analysis of zooplankton in natural and artificial fresh waters

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