Roadmaps and Detours: Active Chlorophyll-a Assessments of Primary Productivity Across Marine and Freshwater Systems

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388971%3A_____%2F18%3A00499409" target="_blank" >RIV/61388971:_____/18:00499409 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1021/acs.est.8b03488" target="_blank" >http://dx.doi.org/10.1021/acs.est.8b03488</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.est.8b03488" target="_blank" >10.1021/acs.est.8b03488</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Roadmaps and Detours: Active Chlorophyll-a Assessments of Primary Productivity Across Marine and Freshwater Systems

Popis výsledku v původním jazyce

Assessing phytoplankton productivity over space and time remains a core goal for oceanographers and limnologists. Fast Repetition Rate fluorometry (FRRf) provides a potential means to realize this goal with unprecedented resolution and scale yet has not become the 'go-to' method despite high expectations. A major obstacle is difficulty converting electron transfer rates to equivalent rates of C-fixation most relevant for studies of biogeochemical C-fluxes. Such difficulty stems from methodological inconsistencies and our limited understanding of how the electron requirement for C-fixation (Phi(e,c)) is influenced by the environment and by differences in the composition and physiology of phytoplankton assemblages. We outline a 'roadmap' for limiting methodological bias and to develop a more mechanistic understanding of the ecophysiology underlying (Phi(e,c). We 1) re-evaluate core physiological processes governing how microalgae invest photosynthetic electron transport-derived energy and reductant into stored carbon versus alternative sinks. Then, we 2) outline steps to facilitate broader uptake and exploitation of FRRf, which could transform our knowledge of aquatic primary productivity. We argue it is time to 3) revise our historic methodological focus on carbon as the currency of choice, to 4) better appreciate that electron transport fundamentally drives ecosystem biogeochemistry, modulates cell-to-cell interactions, and ultimately modifies community biomass and structure.

Název v anglickém jazyce

Roadmaps and Detours: Active Chlorophyll-a Assessments of Primary Productivity Across Marine and Freshwater Systems

Popis výsledku anglicky

Assessing phytoplankton productivity over space and time remains a core goal for oceanographers and limnologists. Fast Repetition Rate fluorometry (FRRf) provides a potential means to realize this goal with unprecedented resolution and scale yet has not become the 'go-to' method despite high expectations. A major obstacle is difficulty converting electron transfer rates to equivalent rates of C-fixation most relevant for studies of biogeochemical C-fluxes. Such difficulty stems from methodological inconsistencies and our limited understanding of how the electron requirement for C-fixation (Phi(e,c)) is influenced by the environment and by differences in the composition and physiology of phytoplankton assemblages. We outline a 'roadmap' for limiting methodological bias and to develop a more mechanistic understanding of the ecophysiology underlying (Phi(e,c). We 1) re-evaluate core physiological processes governing how microalgae invest photosynthetic electron transport-derived energy and reductant into stored carbon versus alternative sinks. Then, we 2) outline steps to facilitate broader uptake and exploitation of FRRf, which could transform our knowledge of aquatic primary productivity. We argue it is time to 3) revise our historic methodological focus on carbon as the currency of choice, to 4) better appreciate that electron transport fundamentally drives ecosystem biogeochemistry, modulates cell-to-cell interactions, and ultimately modifies community biomass and structure.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20707 - Ocean engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Environmental Science & Technology Letters

ISSN

2328-8930

e-ISSN

—

Svazek periodika

52

Číslo periodika v rámci svazku

21

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

16

Strana od-do

12039-12054

Kód UT WoS článku

000449722200009

EID výsledku v databázi Scopus

2-s2.0-85054704839