Combined effects of seawater temperature and nutrient condition on growth and survival of juvenile sporophytes of the kelp Undaria pinnatifida (Laminariales; Phaeophyta) cultivated in northern Honshu, Japan

Gao, Xu; Endo, Hikaru; Taniguchi, Koki; Agatsuma, Yukio

doi:10.1007/s10811-012-9861-x

Cited by 59 publications

(50 citation statements)

References 41 publications

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“…As temperatures rise and yields fall, identifying warm tolerant strains may also be an effective management solution. Indeed, Asian Sacharina japonica farms are currently developing this approach in light of recent warming-induced crop failures (Pang et al 2007, Liu and Pang 2010, Gao et al 2013a.…”

Section: Significance and Limitation Of Findingsmentioning

confidence: 99%

The importance of phenotypic plasticity and local adaptation in driving intraspecific variability in thermal niches of marine macrophytes

et al. 2017

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Climate change is driving the redistribution of species at a global scale and documenting and predicting species' responses to warming is a principal focus of contemporary ecology. When interpreting and predicting their responses to warming, species are generally treated as single homogenous physiological units. However, local adaptation and phenotypic plasticity can result in intraspecific differences in thermal niche. Therefore, population loss may also not only occur from trailing edges. In species with low dispersal capacity this will have profound impacts for the species as a whole, as local population loss will not be offset by immigration of warm tolerant individuals. Recent evidence from terrestrial forests has shown that incorporation of intraspecific variation in thermal niche is vital to accurately predicting species responses to warming. However, marine macrophytes (i.e. seagrasses and seaweeds) that form some of the world's most productive and diverse ecosystems have not been examined in the same context. We conducted a literature review to determine how common intraspecific variation in thermal physiology is in marine macrophytes. We find that 90% of studies identified (n = 42) found clear differences in thermal niche between geographically separated populations. Therefore, non-trailing edge populations may also be vulnerable to future warming trends and given their limited dispersal capacity, such population loss may not be offset by immigration. We also explore how next generation sequencing (NGS) is allowing unprecedented mechanistic insight into plasticity and adaptation. We conclude that in the 'genomic era' it may be possible to link understanding of plasticity and adaptation at the genetic level through to changes in populations providing novel insights on the redistribution of populations under future climate change.

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Section: Significance and Limitation Of Findingsmentioning

confidence: 99%

The importance of phenotypic plasticity and local adaptation in driving intraspecific variability in thermal niches of marine macrophytes

et al. 2017

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“…These algae can become physiologically stressed due to the combined effects of above-average temperatures and nutrient-poor conditions during summer [7,10], and they frequently experience intensive grazing by herbivorous animals such as molluscs, sea urchins, and fishes [11]. Brown algae contain unique compounds called phlorotannins, which are known to have secondary roles as chemical defenses (e.g., herbivore deterrents, digestion inhibitors, antibacterial agents, and UV screens) and primary roles in constructing and strengthening the cell walls [12].…”

Section: Introductionmentioning

confidence: 99%

Combined Effects of Temperature and Nutrient Availability on Growth and Phlorotannin Concentration of the Brown Alga <i>Sargassum patens</i> (Fucales; Phaeophyceae)

Endo

Suehiro²,

Kinoshita³

et al. 2013

AJPS

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Global warming is predicted to affect plant-herbivore interactions. However, little is known about the effects of temperature on marine plant secondary chemistry and how these effects may impact plant-herbivore interactions. As marine macroalgae can become physiologically stressed due to warm water temperatures and nutrient-poor conditions during summer, we conducted a culture experiment to test the combined effects of temperature (10˚C, 20˚C, 30˚C) and nutrient availability (seawater enriched with 25% PESI medium and non-enriched seawater) on relative growth rate (RGR) and concentration of phlorotannins (i.e., defensive compounds) in the upper and lower parts of shoots of the brown alga Sargassum patens. RGR was affected by temperature but not by nutrient availability. Phlorotannnin concentration was affected by nutrient availability but not by temperature, although there was a significant interaction between temperature and part of the shoots. Correlations between RGR and phlorotannin concentration were significant for the upper part of the shoots but not for the lower part. These correlations were slightly positive in the nutrient-enriched medium but negative in the non-enriched medium. These results suggest that temperature affects phlorotannin concentration of S. patens indirectly via changes in the growth rate and that its effect depends on the part of the shoot and nutrient availability.

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“…Nutrient enrichment is used to restore the kelp beds in Japan [36], because it has been shown to enhance recruitment and survival of the algae [15] [37] [38]. However, results of the present study suggest the possibility that nutrient enrichment may increase the palatability of Sargassum by increasing its nitrogen concentration.…”

Section: Discussionmentioning

confidence: 62%

“…Arnold and Targett [26] proposed that the phlorotannin concentration decrease when the growth rate is high but increase when the growth rate is low, at which times rates of phlorotannin synthesis outpace rates of decomposition and incorporation of phlorotannins into cell walls [11] [26]. Nutrient enrichment generally enhances growth of brown algae [15] [27], which explains the decreased phlorotannin concentration in S. yezoense cultured in the nutrient-rich treatments. Although phlorotannins are known to act as herbivore deterrents depending on their concentration [11], there was no significant correlation between phlorotannin concentration and consumption rate of S. yezoense by H. pulcherrimus in the present study.…”

Section: Discussionmentioning

confidence: 99%

“…Nitrogen concentration is another important factor that affects the palatability of brown algae [13]. Nutrient enrichment is known to result in increased palatability [14], decreased phlorotannin concentration [11], and increased nitrogen concentration [15]. However, it is unclear whether decreased phlorotannin concentration or increased nitrogen concentration is responsible for increased palatability caused by nutrient enrichment.…”

Section: Introductionmentioning

confidence: 99%

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Combined Effects of Temperature and Nutrient Enrichment on Palatability of the Brown Alga Sargassum yezoense (Yamada) Yoshida & T. Konno

Endo¹,

Suehiro²,

Kinoshita³

et al. 2015

AJPS

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Global warming is predicted to strengthen marine plant-herbivore interactions. However, little is known about the effect of temperature on palatability and the associated chemical composition of marine macroalgae. To study the effects of physiological stress caused by the warm water temperatures and nutrient-poor conditions that occur during summer, we cultured the brown alga Sargassum yezoense at three different temperatures (16˚C, 22˚C, and 28˚C) in both nutrient-enriched and non-enriched media. We then compared phlorotannin (i.e., defensive compounds) and nitrogen concentrations of S. yezoense as well as consumption rate by the sea urchin Hemicetrotus pulcherrimus among the treatment groups. No effect of culture temperature on phlorotannin and nitrogen concentrations or consumption rate was detected. Nutrient enrichment resulted in decreased phlorotannin concentration and increased nitrogen concentration. Although nutrient enrichment did not affect consumption rate, a positive correlation between nitrogen concentration and consumption rate was detected. In contrast, there was no correlation between phlorotannin concentration and consumption rate. These results suggested that palatability of S. yezoense to H. pulcherrimus might not be affected by elevated temperature but that it could increase with nutrient enrichment.

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Combined effects of seawater temperature and nutrient condition on growth and survival of juvenile sporophytes of the kelp Undaria pinnatifida (Laminariales; Phaeophyta) cultivated in northern Honshu, Japan

Cited by 59 publications

References 41 publications

The importance of phenotypic plasticity and local adaptation in driving intraspecific variability in thermal niches of marine macrophytes

The importance of phenotypic plasticity and local adaptation in driving intraspecific variability in thermal niches of marine macrophytes

Combined Effects of Temperature and Nutrient Availability on Growth and Phlorotannin Concentration of the Brown Alga <i>Sargassum patens</i> (Fucales; Phaeophyceae)

Combined Effects of Temperature and Nutrient Enrichment on Palatability of the Brown Alga Sargassum yezoense (Yamada) Yoshida & T. Konno

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Combined effects of seawater temperature and nutrient condition on growth and survival of juvenile sporophytes of the kelp Undaria pinnatifida (Laminariales; Phaeophyta) cultivated in northern Honshu, Japan

Cited by 59 publications

References 41 publications

The importance of phenotypic plasticity and local adaptation in driving intraspecific variability in thermal niches of marine macrophytes

The importance of phenotypic plasticity and local adaptation in driving intraspecific variability in thermal niches of marine macrophytes

Combined Effects of Temperature and Nutrient Availability on Growth and Phlorotannin Concentration of the Brown Alga &lt;i&gt;Sargassum patens&lt;/i&gt; (Fucales; Phaeophyceae)

Combined Effects of Temperature and Nutrient Enrichment on Palatability of the Brown Alga Sargassum yezoense (Yamada) Yoshida &amp; T. Konno

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Combined Effects of Temperature and Nutrient Availability on Growth and Phlorotannin Concentration of the Brown Alga <i>Sargassum patens</i> (Fucales; Phaeophyceae)

Combined Effects of Temperature and Nutrient Enrichment on Palatability of the Brown Alga Sargassum yezoense (Yamada) Yoshida & T. Konno