The impact of short-term exposure to UV-B radiation on zooplankton communities in north temperate lakes

Williamson, Craig E.; Zagarese, Horacio; Schulze, Peter; Hargreaves, Bruce R.; Seva, Jennifer

doi:10.1093/plankt/16.3.205

Cited by 173 publications

(98 citation statements)

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“…In lakes with low DOC levels (below 1-2 mg L -1 ), even small changes in DOC can have large impacts on 1% UV attenuation depth (Williamson et al 1996). UV radiation in lakes can be harmful to cladoceran populations (Williamson et al 1994;Leech & Williamson 2000); however, in Canadian inland waters, DOC levels were high enough in lakes south of the treeline to prevent extirpation of UV-sensitive Daphnia species (Molot et al 2004). In our study, the lake with the lowest DOC concentration (Pearceley) still had levels of 1.95 mg L -1 , and most other lakes had concentrations higher than 2.5 mg L -1 .…”

Section: Discussionmentioning

confidence: 99%

Linking mean body size of pelagic Cladocera to environmental variables in Precambrian Shield lakes: A paleolimnological approach

Korosi¹,

Paterson²,

DeSellas³

et al. 2008

J Limnol

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Section: Discussionmentioning

confidence: 99%

Linking mean body size of pelagic Cladocera to environmental variables in Precambrian Shield lakes: A paleolimnological approach

Korosi¹,

Paterson²,

DeSellas³

et al. 2008

J Limnol

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“…Several researchers have also reported significant effects of UV exposure on marine and freshwater zooplankton. In copepods, effects of UV-B on survival (Karanas et al 1979;Dey et al 1988;Tartarotti et al 1999), fecundity (Karanas et al 1981;Williamson et al 1994;Cabrera et al 1997) and population density (Cabrera and Pizarro 1994) have been demonstrated. Furthermore, considerable evidence shows that cladocerans are sensitive to sources of UV-B at natural intensities (Siebeck 1978;Siebeck andBöhm 1991, 1994;Hessen 1994;Zagarese et al 1994;Hurtubise et al 1998;Grad et al 2001).…”

Section: Introductionmentioning

confidence: 99%

Differential tolerance to ultraviolet-B light and photoenzymatic repair in cladocerans from a Chilean lake

Ramos‐Jiliberto

Dauelsberg

Zúñiga

2004

Mar. Freshwater Res.

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Abstract. In the present study, the sensitivity of four coexisting cladoceran species to ultraviolet (UV)-B radiation was evaluated. First, the LD 50 under conditions inhibiting the action of photoenzymatic repair was calculated by exposing cladocerans to different doses of UV-B light only. Animals in another treatment group were exposed to both UV-B and visible light, which allows for photoenzymatic repair. Photoenzymatic repair contributed significantly towards the degree of total tolerance to UV-B light in all groups of cladocerans, although the magnitude of the contribution varied among species. When no photoenzymatic repair was allowed, the most tolerant species was Moina micrura, followed by Daphnia ambigua and Ceriodaphnia dubia, with Diaphanosoma chilense being the most sensitive species. Under conditions permitting the action of photorepair, M. micrura was again the most tolerant species to UV-B light. Ceriodaphnia dubia showed an intermediate tolerance value, whereas D. chilense and D. ambigua were the least tolerant species, with no significant differences between them. Adults and juveniles of C. dubia differed in their sensitivity to UV-B light under conditions with and without photorepair.

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“…Low concentrations of DOM allow UV radiation to penetrate to greater depths (Scully and Lean 1994;Kirk 1994) and may combine with absolute increases in UV-B (280-320 nm) radiation flux (Blumthaler and Ambach 1990) to adversely affect aquatic organisms (e.g. Williamson et al 1994).…”

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confidence: 99%

Effects of ultraviolet radiation on periphyton in an alpine lake

Vinebrooke

Leavitt

1996

Limnology & Oceanography

115

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Many alpine lakes have low concentrations of ultraviolet (UV) radiation-absorbing dissolved organic matter, yet receive higher UV radiation flux than low-elevation lakes. We tested whether ambient UV radiation affected periphyton development in a small alpine lake in Banff National Park, Canada. After 30 d, total periphytic biomass and chlorophyll accrual on artificial substrates were enhanced -100% (t-test, P < 0.05) by removal of UV radiation (~400 nm). The inhibitory effect of UV radiation was species-specific, significantly suppressing (Bonferroni-adjusted t-test, P < 0.05) Achnanthes minutissima Kiitzing but not other colonists. Although taxa apparently differed in their sensitivity to UV radiation, periphyton communities remained dominated by early successional taxa, especially A. minutissima (75% of total biovolume). In contrast, natural epilithic communities were dominated by cyanobacteria (Anabaena subcylindrica Borge, Calothrix sp.). These findings suggest that ambient UV radiation at alpine sites can suppress periphyton development by inhibiting littoral diatom production during the short ice-free season (July-September).

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The impact of short-term exposure to UV-B radiation on zooplankton communities in north temperate lakes

Cited by 173 publications

References 0 publications

Linking mean body size of pelagic Cladocera to environmental variables in Precambrian Shield lakes: A paleolimnological approach

Linking mean body size of pelagic Cladocera to environmental variables in Precambrian Shield lakes: A paleolimnological approach

Differential tolerance to ultraviolet-B light and photoenzymatic repair in cladocerans from a Chilean lake

Effects of ultraviolet radiation on periphyton in an alpine lake

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