Dead parts of salt-marsh plants form a considerable fraction of their annual average standing crop. A microbial assemblage living on and in the standing-dead leaves and stems of Spartina alterniflora and Juncus roemerianus responds to saltwater, freshwater or water-vapor wetting by immediately beginning to release CO. Water-saturated, standing-dead leaves and culms of S. alterniflora release CO at steady rates of as much as about 200 and 140 μg CO-C·g dry·h, respectively, at temperatures of 25-30°C, after an initial burst of higher rates. These CO-release rates are within the range of maximal rates reported for decaying terrestrial litter, and are as high as most rates reported for S. alterniflora decaying under continuously wetted or submerged conditions.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/BF00379477 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Uncovering novel functions of the enigmatic, abundant, and active in a salt marsh ecosystem.
mSystems
December 2024
Department of Earth, Ocean and Atmospheric Science, Florida State University, Tallahassee, Florida, USA.
, particularly uncultured representatives, are one of the most abundant microbial groups in coastal salt marshes, dominating the belowground rhizosphere, where over half of plant biomass production occurs. However, this class generally remains poorly understood, particularly in a salt marsh context. Here, novel metagenome-assembled genomes (MAGs) were generated from the salt marsh rhizosphere representing , , JAAYZQ01, B4-G1, JAFGEY01, UCB3, and orders.
View Article and Find Full Text PDFEnsemble habitat suitability model predicts Suaeda salsa distribution and resilience to extreme climate events.
J Environ Manage
December 2024
State Environmental Protection Key Laboratory of Coastal Ecosystem, National Marine Environmental Monitoring Center, Dalian, 116023, China. Electronic address:
Climate anomalies lead to an increased occurrence of extreme temperature and drought events in coastal wetlands, resulting in heightened survival pressure on salt marsh plants. It is imperative to anticipate the effects of these events on the habitat suitability and resilience of coastal salt marsh vegetation to inform restoration efforts and management strategies. Herein, an ensemble model was developed to evaluate the recovery of Suaeda Salsa in the two subsequent years following the anomalously high temperatures and decreased precipitation experienced during the summer of 2018, potentially leading to a decline in this species in the eastern coast of Liaohe Estuary wetland (Bohai Sea, China).
View Article and Find Full Text PDFEnvironmental Stress and Resource Availability Affect the Maintenance of Genetic Variation in a Dominant Marsh Plant (Spartina alterniflora).
Mol Ecol
December 2024
Marine Science Center and Coastal Sustainability Institute, Northeastern University, Nahant, Massachusetts, USA.
Changes in genetic variation, and particularly documented declines in genetic diversity, influence not only evolutionary potential but also current ecological function. Given this context, it is essential to understand what abiotic and biotic factors promote or disrupt the maintenance of genetic variation in natural populations. To address this knowledge gap in the context of salt marsh plants, we established a three-year field experiment, testing the independent and interactive effects of nutrient availability and physical stress on the maintenance of plant (Spartina alterniflora) genotypic diversity.
View Article and Find Full Text PDFBacterial and fungal root endophytes alter survival, growth, and resistance to grazing in a foundation plant species.
Oecologia
December 2024
Marine Science Center, Northeastern University, 430 Nahant Rd, Nahant, MA, 01908, USA.
Plants host an array of microbial symbionts, including both bacterial and fungal endophytes located within their roots. While bacterial and fungal endophytes independently alter host plant growth, response to stress and susceptibility to disease, their combined effects on host plants are poorly studied. To tease apart interactions between co-occurring endophytes on plant growth, morphology, physiology, and survival we conducted a greenhouse experiment.
View Article and Find Full Text PDFThe relative effects of climatic drivers and phenotypic integration on phenotypic plasticity of a globally invasive plant.
Front Plant Sci
November 2024
Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian, China.
Introduction: Understanding the constraints of phenotypic plasticity can provide insights into the factors that limit or influence the capacity of an organism to respond to changing environments. However, the relative effects of external and internal factors on phenotypic plasticity remain largely unexplored. Phenotypic integration, the pattern of correlations among traits, is recognized as an important internal constraint to plasticity.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!