Resource translocation drives δ13C fractionation during recovery from disturbance in giant kelp, Macrocystis pyrifera

@article{Fox2013ResourceTD,
  title={Resource translocation drives $\delta$13C fractionation during recovery from disturbance in giant kelp, Macrocystis pyrifera},
  author={Michael D. Fox},
  journal={Journal of Phycology},
  year={2013},
  volume={49}
}
  • M. Fox
  • Published 1 October 2013
  • Environmental Science
  • Journal of Phycology
Resource allocation and translocation are fundamental physiological functions for autotrophs. The mobilization and use of resources drive population dynamics by regulating growth and recovery of individuals, but also influences ecosystem‐level processes such as primary productivity and carbon cycling. This study provides the first observation of translocation‐driven gradients of δ13C in macroalgae, a critically important phenomenon recognized in vascular plants for decades. A ~10‰ δ13C increase… 
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Biomass loss reduces growth and resource translocation in giant kelp Macrocystis pyrifera
  • Fox
  • Environmental Science
  • 2016
TLDR
The results suggest that the translocation of carbon and nitrogen to juvenile fronds from nearsurface biomass is a critical process affecting growth in giant kelp.
Patterns and drivers of δ13C variation in the giant kelp, Macrocystis pyrifera
TLDR
Experimental data demonstrated that the δ13C of incubated tissue was strongly driven by irradiance but not flow velocity, suggesting that enrichment in M. pyrifera tissue is the result of a light-induced metabolic process, and field sampling confirmed a physiological δ 13C enrichment process associated with photosynthate transport.
A kelp with integrity: Macrocystis pyrifera prioritises tissue maintenance in response to nitrogen fertilisation
TLDR
Patterns in physiological parameters suggest that M. pyrifera displays functional differentiation between canopy and basal tissues that may aid in nutrient-tolerance strategies, similar to those seen in higher plants and unlike thoseseen in more simple algae (i.e. non-kelps).
Short‐term stress responses and recovery of giant kelp (Macrocystis pyrifera, Laminariales, Phaeophyceae) juvenile sporophytes to a simulated marine heatwave and nitrate scarcity1
TLDR
This study summarizes findings on the ability of juvenile sporophytes of Macrocystis pyrifera to survive and recover from simulated MHW conditions in combination with nitrate limitation by evaluating photosynthetic capacity, nitrate uptake, tissue composition, bio‐optical properties, and oxidative stress of single‐blade juvenile sporphytes.
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A fundamental question in ecology is understanding how energy and nutrients move through and between food webs, and which sources of production support consumers. In marine ecosystems, these basic…
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TLDR
The likely impacts of climate change on the physiology of the key biogenic habitat-forming seaweeds E. radiata, P. comosa and M. pyrifera in southeastern Australia are assessed and a complex suite of performance and ecophysiological characteristics including photophysiological indicators are assessed.
Phenology and the Response to Disturbance of the Fucoid, Stephanocystis osmundacea
TLDR
Results suggest that spring frond growth is important to reproductive fitness and removal can stimulate a life history trade-off between reproduction and survival, as well as suggesting how these seaweeds respond to biomass loss provides a better perspective of disturbance effects.
Variation of isotope composition in kelps from Kongsfjorden (Svalbard)
TLDR
Young tissue was more enriched in 13C than meristem and that decaying apical tissue was depleted relative to young tissue, and carbon and nitrogen contents along the blades were species-specific and varied with growing location and year or season.
Widespread kelp-derived carbon in pelagic and benthic nearshore fishes suggested by stable isotope analysis
Photoacclimation and Photoprotection of Juvenile Sporophytes of Macrocystis pyrifera (Laminariales, Phaeophyceae) Under High‐light Conditions During Short‐term Shallow‐water Cultivation1
TLDR
These results are the first to provide robust evidence of photoprotective and photoacclimation strategies in juveniles of M. pyrifera, allowing them to restrict or avoid photodamage during shallow‐water cultivation.
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