Freshwater wetland plants respond nonlinearly to inundation over a sustained period.
A-Ci curve
Cyperaceae
Poaceae
flooding
fructose
glucose
light curve
marsh
sucrose
Journal
American journal of botany
ISSN: 1537-2197
Titre abrégé: Am J Bot
Pays: United States
ID NLM: 0370467
Informations de publication
Date de publication:
10 2021
10 2021
Historique:
revised:
25
05
2021
received:
19
01
2021
accepted:
25
05
2021
pubmed:
8
10
2021
medline:
18
11
2021
entrez:
7
10
2021
Statut:
ppublish
Résumé
Wetland plants regularly experience physiological stresses resulting from inundation; however, plant responses to the interacting effects of water level and inundation duration are not fully understood. We conducted a mesocosm experiment on two wetland species, sawgrass (Cladium jamaicense) and muhly grass (Muhlenbergia filipes), that co-dominate many freshwater wetlands in the Florida Everglades. We tracked photosynthesis, respiration, and growth at water levels of -10 (control), 10 (shallow), and 35 cm (deep) with reference to soil surface over 6 months. The response of photosynthesis to inundation was nonlinear. Specifically, photosynthetic capacity (A Overall, the two species exhibited nonlinear and contrasting patterns of carbon uptake and use under inundation stress, which ultimately defines their strategies of surviving regularly flooded habitats. The results suggest that a future scenario with more intensive inundation, due to the water management and climate change, may weaken the dominance of muhly grass in many freshwater wetlands of the Everglades.
Substances chimiques
Soil
0
Types de publication
Journal Article
Research Support, U.S. Gov't, Non-P.H.S.
Langues
eng
Sous-ensembles de citation
IM
Pagination
1917-1931Informations de copyright
© 2021 The Authors. American Journal of Botany published by Wiley Periodicals LLC on behalf of Botanical Society of America.
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