On the diversity of the Cladocera in the tropics

Dumont, Henri J.

doi:10.1007/978-94-011-0884-3_3

Cited by 138 publications

(100 citation statements)

References 58 publications

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“…In temperate conditions most fish reproduce only once a year, leaving a period in spring in which there are few small (juvenile) fish, allowing large zooplankton to become abundant and filter the water clear of phytoplankton (Sommer, 1986). By contrast, top-down control of zooplankton by fish is very strong all year round in warmer lakes at low latitudes because fish are abundant and reproduce continuously in such (sub)tropical lakes (Dumont, 1994). The difference in food web structure implies that biomanipulation as used to shift temperate lakes to a clear state, seems less easy to apply to (sub)tropical lakes (Scasso et al, 2001;Jeppesen et al, 2005).…”

Section: Climatementioning

confidence: 99%

Shallow lakes theory revisited: various alternative regimes driven by climate, nutrients, depth and lake size

2007

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Shallow lakes have become the archetypical example of ecosystems with alternative stable states. However, since the early conception of that theory, the image of ecosystem stability has been elaborated for shallow lakes far beyond the simple original model. After discussing how spatial heterogeneity and fluctuation of environmental conditions may affect the stability of lakes, we review work demonstrating that the critical nutrient level for lakes to become turbid is higher for smaller lakes, and seems likely to be affected by climatic change too. We then show how the image of just two contrasting states has been elaborated.

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Section: Climatementioning

confidence: 99%

Shallow lakes theory revisited: various alternative regimes driven by climate, nutrients, depth and lake size

2007

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“…Dumont (1980) and Chiambeng & Dumont (2005) attribute its scarcity in tropical lowlands to high levels of predation by fish, more numerous in the tropics than elsewhere. Also, the temperature-dependency of predation is a pivotal variable (Dumont 1994), as well as the absence of seasonal succession in the tropics, exacerbating not only predation but also competition. Finally, the absence of suitable carriers for passive dispersal (e.g.…”

Section: Notes On Biogeographymentioning

confidence: 99%

Taxon richness and biogeography of the Cladocera (Crustacea: Ctenopoda, Anomopoda) of Thailand

Maiphae

Pholpunthin

Dumont

2008

Ann. Limnol. - Int. J. Lim.

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At present, 99 species of cladocerans are known from Thailand, but up to ten more have not been identified to species, particularly in Chydorus, Ephemeroporus and Pleuroxus. Cosmopolitan species are a minority, while wide-ranging circumtropical taxa are an important element, beside species that only occur in the tropics-subtropics of two continents. At least three species are suspected of a neotropical -southeast Asian disjunction, while three more are provisionally considered endemic of Thailand. Daphnia, as usual in the tropics, is rare and reduced to the single D. lumholtzi.

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“…Effects of climatic change on external nutrient loading are perhaps more important in the long run, but studies on this topic to date have produced rather contradictory results (George 2000;Monteith et al 2000;Weyhenmeyer 2001;Straile et al 2003). A hint of the effects of long-term climate change on trophic cascades could be inferred, as suggested by Jeppesen et al (2003), from the observation that top-down control of zooplankton increases toward lower latitudes because of the continuous reproduction of fish (Dumont 1994). However, substantial increases in temperature may be required to push temperate lakes to a continuously reproducing fish community, as found in (sub)tropical climate zones.…”

Section: Long-term Climate Effectsmentioning

confidence: 99%