Photosynthesis of Intertidal Brown Algae During and After Periods of Emersion: A Renewed Search for Physiological Causes of Zonation

Dring, MJ; Brown, F. B.

doi:10.3354/meps008301

Cited by 213 publications

(163 citation statements)

References 20 publications

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“…Partial desiccation can elevate photosynthesis (e.g. Dring and Brown, 1982). U. prolifera has been shown to be tolerant of desiccation by Zou (2001) who found no change in photosynthesis rates after 25% water loss and net positive photosynthesis continued to at least 70% desiccation.…”

Section: Temperature and Periods Of Emersionmentioning

confidence: 99%

Abiotic factors influencing biomass accumulation of green tide causing Ulva spp. on Pyropia culture rafts in the Yellow Sea, China

Keesing

Chen

Shi

et al. 2016

Marine Pollution Bulletin

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a b s t r a c t a r t i c l e i n f oAnnually recurrent green-tides in the Yellow Sea have been shown to result from direct disposal into the sea of fouling Ulva from Pyropia aquaculture. The role abiotic factors play in Ulva biomass accumulation on rafts was studied to find ways to mitigate this problem. Dissolved inorganic nitrogen (DIN) was very high at all sites, but the highest Ulva biomass was associated with the lowest DIN and anthropogenic N. Under luxuriant background nutrient conditions, variability in temperature and periods of emersion, rather than pH, light and salinity determined Ulva biomass. Two dominant species of Ulva displayed differing tolerances to temperature and desiccation which helped explain why Ulva prolifera dominates floating green-tides. Rather than trying to mitigate greentides only by reducing nutrient pollution, an earlier harvest of Pyropia in southern Jiangsu Province especially before temperatures increase greatly above 10°C during April, could reduce the biomass of U. prolifera disposed from rafts.Crown

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Section: Temperature and Periods Of Emersionmentioning

confidence: 99%

Abiotic factors influencing biomass accumulation of green tide causing Ulva spp. on Pyropia culture rafts in the Yellow Sea, China

Keesing

Chen

Shi

et al. 2016

Marine Pollution Bulletin

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“…In Fucus species co-occurring along intertidal gradients, upper-shore F. spiralis recovers better from desiccation (Dring & Brown 1982) and from exposure to more extreme high and low temperatures (Chapman 1995, Davison & Pearson 1996 vesiculosus recovers better from temperature stress than lower-shore F. serratus, although in the latter the recovery capacity is even further diminished at the warmer edge of the distributional range (Pearson et al 2009). Species from the upper shore also tend to have greater physiological performance at low tide while still hydrated (Skene 2004).…”

Section: Introductionmentioning

confidence: 95%

Fucus vesiculosus and spiralis species complex: a nested model of local adaptation at the shore level

Billard¹,

Serrão²,

Pearson³

et al. 2010

Mar. Ecol. Prog. Ser.

104

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Intertidal rocky shores provide classic examples of habitat-driven divergent selection. We show that the species complex Fucus vesiculosus L./F. spiralis L. is composed of 3 distinct genetic entities that have evolved along different time scales. Using assignment tests based on microsatellite markers and performed on randomly sampled individuals in 2 separate geographic regions (Portugal and France), we reveal that F. spiralis consists of 2 genetic entities that have distinct vertical distributional patterns along the intertidal gradient of selective pressures. Individuals assigned to the cluster found higher on the shore are also morphologically different. They are smaller and bushy, with dichotomous ramifications and no sterile rime around receptacles. Patterns of genetic divergence suggest different times and pathways to reproductive isolation. Divergence between F. vesiculosus and the F. spiralis complex seems to have occurred first, coinciding with divergence in reproductive mode; dioecy versus selfing hermaphroditism. Later, in the hermaphroditic lineage, parallel evolution of 2 co-occurring genetic clusters may have been driven by natural selection and facilitated by high selfing rates in the F. spiralis complex.

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“…These results are surprising, especially since F. spiralis endures long periods of emergence in its natural habitat in the intertidal [e.g. Dring and Brown (1982)], while in the laboratory it showed the highest biomass of the three Fucus species under conditions of permanent submergence. In the field, the other congeners generally grow to a higher maximum length, which is often seen as a trait for competitive dominance in plants [e.g.…”

Section: Discussionmentioning

confidence: 64%

Competitive ranks of three Fucus spp. (Phaeophyta) in laboratory experiments?testing of Keddy's competitive hierarchy model

Karez

2003

Helgoland Marine Research

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Keddy's competitive hierarchy model describes species distribution patterns along gradients under equilibrium conditions and can potentially serve as an explanation for zonation patterns of intertidal seaweeds on rocky shores. One of the assumptions of the model is a competitive hierarchy with the top competitor occupying the benign end of the gradient. Another assumption is the consistency of competitive ranks of species in all environmental conditions included in the shared parts of species' fundamental niches. In laboratory replacement series experiments, the competitive ranks of pairs of Fucus species that occupy adjacent zones in the field were analysed and compared to ranks found in previous field experiments. Unattached thalli of Fucus serratus versus F. vesiculosus or F. vesiculosus versus F. spiralis, respectively, were held in aerated beakers to establish the competitive ranking of the three congeners. Each replacement series was conducted at three total densities. F. vesiculosus was clearly competitively dominant over F. serratus. In competition with F. spiralis, F. vesiculosus was only dominant at its lowest absolute input frequencies, but at higher frequencies dominance was reversed. At high densities, the total ranking was F. spiralis > F. vesiculosus > F. serratus, which is the opposite order to that which would be expected from Keddy's model. Although all three species thrived well under the laboratory conditions, the results did not reflect in situ competitive dominances, which may be an effect of nutrient competition in the laboratory. Keddy's assumption that competitive ranks are consistent over the whole range of fundamental niches cannot be supported for Fucus spp.

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Photosynthesis of Intertidal Brown Algae During and After Periods of Emersion: A Renewed Search for Physiological Causes of Zonation

Cited by 213 publications

References 20 publications

Abiotic factors influencing biomass accumulation of green tide causing Ulva spp. on Pyropia culture rafts in the Yellow Sea, China

Abiotic factors influencing biomass accumulation of green tide causing Ulva spp. on Pyropia culture rafts in the Yellow Sea, China

Fucus vesiculosus and spiralis species complex: a nested model of local adaptation at the shore level

Competitive ranks of three Fucus spp. (Phaeophyta) in laboratory experiments?testing of Keddy's competitive hierarchy model

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