Rising Temperature Is a More Important Driver Than Increasing Carbon Dioxide Concentrations in the Trait Responses of Enhalus acoroides Seedlings

Increasing temperature and CO2 concentration are among the most important factors affecting marine ecosystems under climate change. We investigated the morphological, biochemical, and physiological trait responses of seedlings of the tropical seagrass Enhalus acoroides under experimental conditions....

Full description

Saved in:
Bibliographic Details
Published in:Applied sciences 2021-03, Vol.11 (6), p.2730
Main Authors: Artika, Suci Rahmadani, Ambo-Rappe, Rohani, Samawi, Muhammad Farid, Teichberg, Mirta, Moreira-Saporiti, Agustín, Viana, Inés G.
Format: Article
Language:English
Subjects:
Aquariums
biochemical traits
Biomass
Carbon dioxide
Climate change
Ecosystems
Enhalus acoroides
Environmental changes
Factorial experiments
High temperature
Indo-Pacific
Laboratories
Leaves
Marine ecosystems
morphology
Nutrient concentrations
Nutrient content
photo-physiology
Physiology
seagrass
Seagrasses
Seawater
Seedlings
Seeds
Starch
Temperature effects
Water temperature
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Increasing temperature and CO2 concentration are among the most important factors affecting marine ecosystems under climate change. We investigated the morphological, biochemical, and physiological trait responses of seedlings of the tropical seagrass Enhalus acoroides under experimental conditions. Trait responses were greater under temperature effects than increasing CO2 concentration. Seedlings under rising temperatures showed enhanced leaf growth, lower leaf nutrient content, and stimulated down-regulating mechanisms in terms of photo-physiology. Increasing CO2 concentrations did not show any significant effects independently. There was a significant interaction for some of the trait responses considered, such as leaf number and carbon content in the roots, and trends of higher starch concentrations in the leaves and lower rETRmax under combined enriched CO2 and high temperature, even though none of these interactions were synergistic. Understanding the single and interactive trait responses of seagrass seedlings to increasing temperature and CO2 concentration is of importance to determine the relative responses of early life stages of seagrasses, which may differ from adult plants, in order to form a more holistic view of seagrass ecosystem health under climate change.
ISSN:2076-3417
2076-3417
DOI:10.3390/app11062730