Differential nutrient uptake by two segregated red algae in an estuarine intertidal zone

Pedro, Raquel Sánchez de; Niell, F. Xavier; Carmona, Raquel

doi:10.2216/13-147.1

Cited by 6 publications

(11 citation statements)

References 67 publications

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“…The algae were removed from the lower parts of the lignified stems of Sarcocornia perennis, where they both occurred at the same tidal elevations. Tidal position was verified using surveying techniques related to established tidal baselines during a tidal cycle, as described in Sánchez de Pedro et al (2013). Algae were placed in containers with a minimal amount of estuarine water, transported in a cooler to the laboratory and then rinsed in natural non-filtered seawater and carefully cleaned of sediment and scrubbed of epiphytes.…”

Section: Methodsmentioning

confidence: 99%

“…Since the selected model for µ-I relationships can bias the resulting growth parameters, E c values were additionally obtained by regression analysis, as indicated in Markager & Sand-Jensen (1992). Surface area: volume (SA:V) quotient and total carbon content (% C) of C. caespitosa and B. scorpioides reported by Sánchez de Pedro et al (2013) were used to estimate the surface area per unit dry biomass (SA:B) and thallus specific carbon content (TSC, expressed as mol C m −2 ) in this study, to normalize the photosynthetic and growth parameters (Markager & SandJensen, 1994). …”

Section: Growth Measurementsmentioning

confidence: 99%

“…Although the biomass and distribution of red macroalgae in these ecosystems is highly variable (Beanland & Woelkerling, 1983) some clear vertical zonation patterns have been identified (Melville & Pulkownik, 2007). Bostrychia species usually live in the upper intertidal, whereas Catenella and Caloglossa species occupy lower positions (Mann & Steinke, 1988;Pedroche et al, 1995;Batelli, 2004;Melville et al, 2005;Sánchez de Pedro et al, 2013). The upper distributional limits for these species have been related to the emersion stress tolerance (Davey & Woelkerling, 1985) and their capacity for recovering nutrient uptake or photosynthesis after resubmersion (Datta & Datta, 1999;Peña-Salamanca et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

“…Sánchez de Pedro et al (2013) have recently described a low amplitude zonation in these species in the intertidal of the Palmones estuary, a shallow mesotidal estuary in Algeciras Bay, Cádiz (southern Spain). These species grow attached to the stems of saltmarsh vegetation, mainly Sarcocornia perennis (Mill.)…”

Section: Introductionmentioning

confidence: 99%

“…If they are not found to be so, it follows that some processes or factors other than their photophysiology and/or nutrient uptake capability (Sánchez de Pedro et al, 2013) are preventing them from coexisting. In order to test this hypothesis, we assessed: (1) the in situ light attenuation within the canopy in the intertidal zone; (2) the macroalgal zonation limits in terms of irradiance; and (3) the ex situ changes in photosynthetic and growth parameters and pigment content at in situ environmental light levels.…”

Section: Introductionmentioning

confidence: 99%

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Understanding the intertidal zonation of two estuarine red macroalgae fromex situphotoacclimative responses

Pedro

Niell

Carmona

2014

European Journal of Phycology

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This study investigated the influence of light on the distributional limits of Bostrychia scorpioides and Catenella caespitosa within a low amplitude intertidal zonation in the Palmones estuary, Spain. Changes in photosynthesis-and growth-irradiance curves and pigment content were examined ex situ at irradiances found in their natural habitat (10-230 µmol photons m −2 s −1). The highest maximum photosynthesis rate (P m ) and photosynthetic efficiency (α) were found between 20-40 µmol photons m −2 s −1 in both species. Bostrychia scorpioides, the uppermost intertidal species, had a higher P m , α, dark respiration rate and light compensation point (E c ) than C. caespitosa at all acclimation irradiances. Net photosynthetic rates measured at their respective acclimation irradiances showed photosynthetic responses of B. scorpioides to be maximized at high irradiances, while in C. caespitosa they did not change. Higher growth rates were obtained in C. caespitosa than in B. scorpioides, which may be related to its lower thallus specific carbon content. When irradiance decreased, the chlorophyll a content of B. scorpioides increased whereas in C. caespitosa R-phycoerythrin increased. E c for growth of B. scorpioides coincided with the irradiance at its lower distributional limit in the estuary, below which this species showed losses in biomass. However, in C. caespitosa the sustained growth ex situ at saturating irradiances contrasts with its absence from the upper intertidal zone, where similar light regimes occur. We demonstrated that while light clearly restricts the growth of B. scorpioides to the uppermost intertidal zone, this environmental factor would not prevent C. caespitosa from growing at higher levels.

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Section: Methodsmentioning

confidence: 99%

Section: Growth Measurementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Understanding the intertidal zonation of two estuarine red macroalgae fromex situphotoacclimative responses

Pedro

Niell

Carmona

2014

European Journal of Phycology

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Bioremediation of aquaculture wastewater: evaluating the prospects of the red alga Palmaria palmata (Rhodophyta) for nitrogen uptake

Grote

2016

J Appl Phycol

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Mechanisms of inorganic carbon acquisition in two estuarine Rhodophyceans: Bostrychia scorpioides (Hudson) ex Kützing Montagne and Catenella caespitosa (Withering) L. M. Irvine

et al. 2014

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Marine macroalgae possess a range of mechanisms to increase the availability of CO2 for fixation by ribulose-1,5-bisphosphate carboxylase/oxygenase. Of these, possession of a periplasmic or external carbonic anhydrase and the ability to use bicarbonate ions is widely distributed. The mechanisms of carbon acquisition were studied in two estuarine red macroalgae Bostrychia scorpioides and Catenella caespitosa using a range of techniques. pH-drift and CO2-depletion experiments at constant pH suggested that CO2 is the main source of inorganic carbon in both species. Inhibitors indicated that internal and external carbonic anhydrase were present in both species. Inhibitors also suggested that uptake of bicarbonate is unlikely to be present (P < 0.05).

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Differential nutrient uptake by two segregated red algae in an estuarine intertidal zone

Cited by 6 publications

References 67 publications

Understanding the intertidal zonation of two estuarine red macroalgae fromex situphotoacclimative responses

Understanding the intertidal zonation of two estuarine red macroalgae fromex situphotoacclimative responses

Bioremediation of aquaculture wastewater: evaluating the prospects of the red alga Palmaria palmata (Rhodophyta) for nitrogen uptake

Mechanisms of inorganic carbon acquisition in two estuarine Rhodophyceans: Bostrychia scorpioides (Hudson) ex Kützing Montagne and Catenella caespitosa (Withering) L. M. Irvine

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