Phytoplankton and zooplankton response to ultraviolet radiation in a high-altitude Andean lake: short- versus long-term effects

Cabrera, S.; López, Matilde; Tartarotti, Barbara

doi:10.1093/plankt/19.11.1565

Cited by 102 publications

(80 citation statements)

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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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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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“…Cabrera et al 1997;Hazzard et al 1997). It has also been shown that organisms can have markedly different tolerances of UVR (e.g.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity of freshwater macrophytes to UV radiation: relationship to depth zonation in an oligotrophic New Zealand lake

Rae¹,

Hanelt

Hawes³

2001

Mar. Freshwater Res.

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Abstract. The ultraviolet radiation (UVR) responses of photosynthesis by two freshwater vascular plants, Potamogeton cheesemanii and Isoetes alpinus, and the characean algae Chara fibrosa and C. corallina in Lake Coleridge, New Zealand, were investigated. Experiments comprised 4-5 h of exposure to different UV wavelengths followed by 17 h of recovery in low light. Photosynthetic competence was assessed by pulse-amplitude-modulated fluorometry. The four species showed different sensitivities to UVR, which were consistent with their upper depth limits. The shallowest-growing species, P. cheesemanii, was uninhibited by UVR, whereas after 5 h of exposure to UVR, inhibition of 15%, 38% and 48% was measured for I. alpinus, C. fibrosa and C. corallina collected from 4 m, 6.2 m and 16.5 m, respectively. Not all plants recovered fully from UVR inhibition. Plants from upper and lower depths of their growth range did not generally differ in inhibition sustained or ability to recover photosynthesis. The species with greatest tolerance of UVR also contained the highest concentrations of UVR-absorbing pigments. Freshwater macrophytes have differing abilities to tolerate UVR exposure through repair and/or protection strategies and these may be related to their vertical zonation.

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“…A growing number of authors have explored the effects of UV-B on aquatic organisms, including rotifers (Cabrera et al 1997), copepods (Tartarotti et al 1999), Daphnia (Zagarese et al 1994), shrimp and euphausids (Damkaer and Dey 1983), fish (Gutiérrez-Rodríguez and Williamson 1999), as well as effects on planktonic communities Mostajir et al 1999). In all cases, UVR was found to harm the organisms in question by decreasing their survival during at least one life stage.…”

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confidence: 99%

Zooplankton survival and reproduction responses to damaging UV radiation: A test of reciprocity and photoenzymatic repair

Grad

Williamson

Karapelou

2001

Limnology & Oceanography

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As stratospheric ozone concentrations are reduced, exposure of organisms to damaging ultraviolet radiation (UVR) reaching the earth increases. Many organisms can repair DNA damaged by UVR through photoenzymatic repair (PER) using the enzyme photolyase, in the presence of photorepair radiation (UV-A and visible light [PRR]). Biological weighting functions have been used to model UVR damage in organisms in an attempt to predict the short-term effects of ozone depletion. One assumption of these studies is that reciprocity-satisfied when the effect of a dose is independent of the dose rate-must hold. Here we exposed organisms to damaging UV-B radiation in both the presence and absence of PRR. This study explicitly tests whether reciprocity holds in two zooplankters with differing PER abilities: Daphnia pulicaria, and Asplanchna girodi. We found significant PER and a failure of reciprocity when comparing Daphnia and Asplanchna survival at different dose rates. However, in a higher dose experiment with Asplanchna, we found no significant PER, and reciprocity held. These experiments show a link between PER and reciprocity. The ability of Daphnia and Asplanchna to produce viable offspring after UVR exposure did not vary with dose rate but did vary with PRR. Reciprocity held in all cases where PRR was provided, but in the absence of PRR all offspring died. This study shows that overall dose, dose rate, the ability to undergo PER, and the presence of PRR are important factors to consider when studying the effects of UVR on organisms.

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Phytoplankton and zooplankton response to ultraviolet radiation in a high-altitude Andean lake: short- versus long-term effects

Cited by 102 publications

References 0 publications

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

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

Sensitivity of freshwater macrophytes to UV radiation: relationship to depth zonation in an oligotrophic New Zealand lake

Zooplankton survival and reproduction responses to damaging UV radiation: A test of reciprocity and photoenzymatic repair

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