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Authors Sanchez-Garcia, EA; Rodriguez-Medina, K; Moreno-Casasola, P
Author Full Name Abel Sanchez-Garcia, Edgar; Rodriguez-Medina, Karla; Moreno-Casasola, Patricia
Title Effects of soil saturation and salinity on seed germination in seven freshwater marsh species from the tropical coast of the Gulf of Mexico
Source AQUATIC BOTANY
Language English
Document Type Article
Author Keywords Saturation; Freshwater coastal marshes; Germination; Salinity; Veracruz
Keywords Plus PHRAGMITES-AUSTRALIS; CLIMATE-CHANGE; FLORISTIC COMPOSITION; CLADIUM-JAMAICENSE; SALT-MARSH; GROWTH; WETLAND; MACROPHYTES; VEGETATION; CONSTRAINT
Abstract The Gulf of Mexico will be strongly impacted by climate change. Most climate change scenarios predict increases in sea level, which will affect coastal wetland systems. Our aim is to understand how salinity and flooding affect germination in tropical freshwater marsh species. The germination of seven species occurring in coastal freshwater marshes in central Veracruz on the Gulf of Mexico was evaluated. The purpose of this study was to determine in the laboratory the rate and percentage of seed germination at different levels of salinity and flooding for the species: Typha domingensis, Sagittaria lancifolia, Ludwigia octovalvis, Pontederia sagittata, Boehmeria cylindrica, Cyperus digitatus and Puirena simplex. Germination tests were conducted in Petri dishes. The treatment consisted of two factors: saturation and salinity. The first factor presented two levels (moist and saturated), and the second factor four levels (freshwater, 5, 10 and 15 ppt). The controlled conditions in the germination chamber were light for 14 hat 25 degrees C and dark for 10 hat 20 degrees C. The results showed that the species germinated faster and had higher germination percentages in the freshwater treatment compared to the more saline conditions. The three most salt-tolerant species were T. domingensis, L. octovalvis and C. digitatus. Additionally, germination was higher under saturated conditions for all species except for B. cylindrica. Based on our results, we conclude that changes in hydroperiod, but mainly an increase in saline conditions, can significantly affect the germination process of coastal freshwater marsh species under wetland salt intrusion.
Author Address [Abel Sanchez-Garcia, Edgar; Rodriguez-Medina, Karla; Moreno-Casasola, Patricia] Inst Ecol AC, Red Ecol Func, Carretera Antigua Coatepec 351, Xalapa 91070, Veracruz, Mexico
Reprint Address Moreno-Casasola, P (corresponding author), Inst Ecol AC, Red Ecol Func, Carretera Antigua Coatepec 351, Xalapa 91070, Veracruz, Mexico.
E-mail Address patricia.moreno@inecol.mx
ResearcherID Number Moreno-Casasola, Patricia/R-8562-2018
ORCID Number Moreno-Casasola, Patricia/0000-0003-0468-0851; Rodriguez-Medina, Karla/0000-0002-1725-1952
Funding Agency and Grant Number CONACYT-SEPConsejo Nacional de Ciencia y Tecnologia (CONACyT) [106451]; Instituto de Ecologia A.C.
Funding Text This study was funded by CONACYT-SEP project no. 106451 and the Instituto de Ecologia A.C. We thank Roberto Monroy for his help with the figures.
Times Cited 5
Total Times Cited Count (WoS, BCI, and CSCD) 5
Publisher ELSEVIER
Publisher City AMSTERDAM
Publisher Address RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS
ISSN 0304-3770
29-Character Source Abbreviation AQUAT BOT
ISO Source Abbreviation Aquat. Bot.
Publication Date MAY
Year Published 2017
Volume 140
Beginning Page 4
Ending Page 12
Digital Object Identifier (DOI) 10.1016/j.aquabot.2017.04.002
Page Count 9
Web of Science Category Plant Sciences; Marine & Freshwater Biology
Subject Category Plant Sciences; Marine & Freshwater Biology
Document Delivery Number EZ9IU
Unique Article Identifier WOS:000405044500002
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