RT journal article
T1 Macroecological patterns of the phytoplankton production of polyunsaturated aldehydes
A1 Cózar Cabañas, Andrés
A1 Morillo García, Soledad
A1 Ortega Agüera, María Jesús
A1 Li, Qian P.
A1 Bartual Magro, Ana
A2 Biología
A2 Química Orgánica
K1 fitoplancton
K1 PUA
K1 aldehidos poliinsaturados
AB The polyunsaturated aldehydes (PUAs) are bioactive metabolites commonly released by phytoplanktonspecies. Based primarily on laboratory experiments, PUAs have been implicated in deleterious efectson herbivores and competing phytoplankton species or in the regulation of the rates of bacterial organicmatter remineralization; however, the role of the PUAs at an ecosystem level is still under discussion.Using data of PUA production in natural phytoplankton assemblages over a wide range of conditions,we analyzed macroecological patterns aiming for a comprehensive environmental contextualizationthat will further our understanding of the control and ecologic role played by these compounds. PUAcomposition changed from the predominance of decadienal in oligotrophy, octadienal in eutrophy,and heptadienal at intermediate conditions. The production of PUAs per unit biomass also showed astrong relationship with the trophic status, sharply increasing towards oligotrophic conditions and withsmall-sized cells reaching the highest production rates. High ratios of dissolved inorganic nitrogen todissolved inorganic phosphorus also promoted PUA production, albeit to a considerably lesser extent.Although the allelopathic use of PUAs to outcompete other phytoplankton or reduce herbivory maybe key in some environments and interactions, the macroecological patterns found here, showinghigher production towards the poorest waters and among the small species typically populating theseenvironments, support and link at the large scale the hypotheses of the nutrient-derived stress as driverfor the production of PUAs together with the use of these compounds as boosters for the nutrientremineralization.
PB NATURE PORTFOLIO
SN 2045-2322
YR 2018
FD 2018-08-16
LK http://hdl.handle.net/10498/30110
UL http://hdl.handle.net/10498/30110
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 07-nov-2026