Efecto de la profundidad y la temperatura en la fenología reproductiva y vegetativa de zostera marina durante el primer año de el niño 1997-1998

Translated title of the contribution: Effect of depth gradient and temperature on zostera marina vegetative and reproductive phenology in the first year of the 1997–1998 el niño

Alf Enrique Meling-López, Silvia Emilia Ibarra-Obando, Horacio de la Cueva*, Pedro Ortega-Romero, Adriana Leticia Navarro-Verdugo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Does Zostera marina exhibit phenotypic plasticity, maximizing fitness in traits responding to environmental factors, i.e., depth and temperature? We compared the vegetative and sexual phenology and reproductive effort of Z. marina by analyzing vegetative and reproductive shoot density, biomass, and reproductive stages to determine structural features of vegetative and reproductive shoots from subtidal and intertidal environments in San Quintín Bay, Baja California, a year before and after the 1997–1998 El Niño/Southern Oscillation (ENSO). We found significant differences in vegetative and reproductive biomass between intertidal and subtidal environments driven by temperature differences between ENSO and non-ENSO years. Subtidal plants had lower density of long reproductive shoots and a shorter reproductive cycle. Seed release occurred from May to October in the subtidal environment, and from May to November in the intertidal environment. Maximal recorded values were 219.5 (±45.8) seeds per reproductive shoot in the subtidal environment and 151.3 (±21.5) in the intertidal environment. We observed higher sexual activity and lower vegetative biomass in the intertidal environment, the most stressful environment. Both vegetative and reproductive biomass were affected by the increase in temperature during ENSO, but vegetative and reproductive shoot densities were not affected.

Translated title of the contributionEffect of depth gradient and temperature on zostera marina vegetative and reproductive phenology in the first year of the 1997–1998 el niño
Original languageSpanish
JournalCiencias Marinas
Volume47
Issue number1
DOIs
StatePublished - 5 Mar 2021

Bibliographical note

Funding Information:
The National Council for Science and Technology (Mexico) funded project C01-1434.

Publisher Copyright:
© 2021, Universidad Autonoma de Baja California. All rights reserved.

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