Effects of ultraviolet-B radiation on primary production along latitudinal transects in the South Pacific ocean

Behrenfeld, Michael J.; Hardy, John S.; Gucinski, Hermann; Hanneman, Andy; Lee, Henry; Wones, Andrew G.

doi:10.1016/0141-1136(93)90102-6

Cited by 63 publications

(43 citation statements)

References 27 publications

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“…Linear relationship without threshold suggests that propriety of reciprocity (i.e. the effect is only function of cumulative exposure independently of irradiance) holds for our experimental conditions (several hours with solar irradiance), in agreement with Behrenfeld et al (1993). In fact, these repair processes use different parts of the solar spectrum and are likely to operate on different and longer time scales.…”

Section: Stronger Effect Of Uv-a Than Uv-b On Phytoplanktonsupporting

confidence: 65%

“…De Mora et al 2000, Helbling et al 2001, Xenopoulos & Schindler 2003. The predominance of UV-A effect in comparison to UV-B on the phytoplankton is widely documented in other tropical or subtropical ecosystems (Piazena et al 2002), polar (Villafañe et al 1995) and temperate marine ecosystems (Behrenfeld et al 1993, Helbling et al 2001), but also in lakes , Carrillo et al 2002. In fact, a wide range of interspecific UV-R tolerance in phytoplankton has been reported (Gieskes & Buma 1997, De Mora et al 2000.…”

Section: Stronger Effect Of Uv-a Than Uv-b On Phytoplanktonmentioning

confidence: 99%

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Effect of solar ultraviolet radiation on bacterio- and phytoplankton activity in a large coral reef lagoon (southwest New Caledonia)

Conan¹,

Joux²,

Torréton³

et al. 2008

Aquat. Microb. Ecol.

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Measurements of underwater solar ultraviolet radiation (UV-R, 280 to 400 nm), particulate (PPP) and dissolved (DPP) primary and bacterial (BP) production allowed us to infer the respective contribution of UV-B (280 to 315 nm) and UV-A (315 to 400 nm) in algal-bacterial interactions in the southwest lagoon of New Caledonia. Differences in and between activities were assessed by in situ exposure of plankton to full sun radiation and shielded for UV-B or UV-R. We found a coherent response of phytoplankton and bacteria in total UV-R inhibition. The deepest limit of UV-R influence was 8 m, and inhibition increased with oligotrophy to reach 55% for phytoplankton and 75% for bacteria, at 1 m depth. UV-B contributed up to 50% to the inhibition, especially near the surface and at the oligotrophic station. The UV-A effect on PPP was stronger than that of UV-B; however, bacteria were more sensitive to UV-B than were phytoplankton. When considering UV-A and UV-B separately, the inhibition response was linear without threshold. However, a threshold of 0.002 for PPP and 0.004 for BP was obtained when considering the ratio UV-B:UV-A. The rate of PPP normalized to chlorophyll concentration (PP chl ) is proposed to reconcile the large range of inhibition encountered in the literature. A significant linear relationship predicted a PPP inhibition of 60% in surface water with no significant effect on excretion for cells characterized by a low PP chl , whereas PPP inhibition should be limited for cells characterized by a PP chl higher than 18 mg C (mg chl) -1 h -1 , even if excretion (DPP) could be slightly stimulated.

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Section: Stronger Effect Of Uv-a Than Uv-b On Phytoplanktonsupporting

confidence: 65%

Section: Stronger Effect Of Uv-a Than Uv-b On Phytoplanktonmentioning

confidence: 99%

Effect of solar ultraviolet radiation on bacterio- and phytoplankton activity in a large coral reef lagoon (southwest New Caledonia)

Conan¹,

Joux²,

Torréton³

et al. 2008

Aquat. Microb. Ecol.

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“…The largest data sets available on photoinhibition (decrease in carbon fixation) by UVBR in natural marine phytoplankton are those of Smith et al (1980) and Behrenfeld et al (1993a). Their results are dramatically different despite similar methods used to determine photoinhibition.…”

Section: Introductionmentioning

confidence: 96%

“…Photoinhibition was described by Smith et al (1980) as a Linear function of W B R dose weighted by the PI action spectrum. Behrenfeld et al (1993a) found the DNA action spectrum best described the wavelength specific photoinhibition by UVBR, even though the effect was probably not due to DNA damage. The DNA action spectrum gives shorter wavelengths a relatively greater effective weight than the PI action spectrum.…”

Section: Introductionmentioning

confidence: 99%

“…The quantitative effects of ultraviolet-B radiation (UVBR: 290 to 320 nm) on marine primary production have been the focus of intensive research almost since stratospheric ozone depletion was discovered (Lorenzen 1979, Worrest et al 1981, Behrenfeld et al 1992, 1993a, Helbling et al 1992. Developing a reliable estimate of the dose response of marine phytoplankton to UVBR has been a common goal of this research, yet has remained elusive largely due to an incomplete knowledge of the wavelengthdependent biological effects of UVBR.…”

Section: Introductionmentioning

confidence: 99%

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Is there a common response to ultraviolet-B radiation by marine phytoplankton?

Behrenfeld¹,

Chapman²,

Hardy³

et al. 1993

Mar. Ecol. Prog. Ser.

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ABSTRACT-Global increases in ultraviolet-B radiation (UVBR) have the potential to alter marine primary production and to affect carbon cycles and marine trophic dynamics. Estimates of UVBR induced photoinhibition have varied greatly, indicating that a common dose-response by marine phytoplankton may not occur from place to place. An action spectrum describing the wavelength speciflc effects of UVBR on carbon fixation was determined by comparing responses of phytoplankton exposed to natural and artificial UVBR sources. Application of this new action spectrum to data presented here, as well as data reported previously, indicates that a common photoinhibitory response to UVBR may occur for exposures of several hours.

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The role of differential DMSP production and community composition in predicting variability of global surface DMSP concentrations

McParland

Levine

2018

Limnology & Oceanography

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Dimethylsulfoniopropionate (DMSP) is an important labile component of the marine dissolved organic matter pool that is produced by the majority of eukaryotic marine phytoplankton and by many prokaryotes. Despite decades of research, the contribution of different environmental drivers of DMSP production to regional and seasonal variability remains unknown. A synthesis of the current state‐of‐knowledge suggested that approximately half of confirmed DMSP producers are low producers (intracellular DMSP < 50 mM). Low DMSP producers (LoDPs; e.g., diatoms) were shown to strongly regulate intracellular DMSP concentrations (~ 16‐fold change) as a predictable function of nutrient stress. By comparison, high DMSP producers (HiDPs; e.g., coccolithophores) showed very little response (~ 1.5‐fold change). To assess the importance of differential DMSP production by low and high producers, DMSP concentrations were predicted for two time‐series sites (a high‐ and low‐productivity site) and for the global ocean by explicitly incorporating both community composition and mechanistic nutrient stress. Despite large, predictable intracellular DMSP changes, low producers contributed less than 5% to global DMSP. This indicates that, while variations in DMSP production by low producers could be important for predicting microbial interactions and low producer physiology, it is not necessary for predicting global DMSP concentrations. Our analysis suggests that community composition, particularly HiDP biomass, is the dominant driver of variability in in situ DMSP concentrations, even in low‐productivity regions where high producers are typically the subdominant group. Accurate predictions of in situ DMSP concentrations require improved representation of subdominant community dynamics in ecosystem models and remote‐sensing algorithms.

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Effects of ultraviolet-B radiation on primary production along latitudinal transects in the South Pacific ocean

Cited by 63 publications

References 27 publications

Effect of solar ultraviolet radiation on bacterio- and phytoplankton activity in a large coral reef lagoon (southwest New Caledonia)

Effect of solar ultraviolet radiation on bacterio- and phytoplankton activity in a large coral reef lagoon (southwest New Caledonia)

Is there a common response to ultraviolet-B radiation by marine phytoplankton?

The role of differential DMSP production and community composition in predicting variability of global surface DMSP concentrations

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