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Publication Type J
Authors Carvalho, LM; Cacador, I; Martins-Loucao, MA
Author Full Name Carvalho, LM; Cacador, I; Martins-Loucao, MA
Title Temporal and spatial variation of arbuscular mycorrhizas in salt marsh plants of the Tagus estuary (Portugal)
Language English
Document Type Article
Author Keywords arbuscular mycorrhizas; salt marshes; temporal and spatial variation; flooding; salinity
Abstract The factors which may influence temporal and spatial variation in plant arbuscular mycorrhizal (AM) colonization and propagule occurrence were evaluated in a Portuguese salt marsh poor in plant diversity. Two distinct sites were studied: a more-flooded (low marsh) and a less-flooded zone (high marsh). AM root colonization, AM fungal spore number and inoculum potential, soil edaphic parameters and tidal flooding time periods were analysed. Levels of AM colonization were considerable in Aster tripolium and Inula crithmoides but very low in Puccinellia maritima and non-existent in Spartina maritima, Halimione portulacoides, Arthrocnemum friticosum and Arthrocnemum perenne. Fungal diversity was very low, with Glomus geosporum dominant at both marsh zones. Colonization showed no spatial variation within marsh zones but temporal variation was observed in the high marsh, dependent on plant phenological phases. In the low marsh, no significantly seasonal variation was observed. Apparently, plant phenological events were diluted by stressful conditions (e.g. flooding, salinity). Spore density was significantly different between marsh zones and showed temporal variation in both zones. This study showed that distribution of mycorrhizas in salt marsh is more dependent on host plant species than on environmental stresses.
Author Address Fac Ciencias Lisboa, Dept Biol Vegetal, Ctr Ecol & Biol Vegetal, P-1749016 Lisbon, Portugal; Fac Ciencias Lisboa, Inst Oceanog, P-1749016 Lisbon, Portugal
Reprint Address Carvalho, LM (reprint author), Fac Ciencias Lisboa, Dept Biol Vegetal, Ctr Ecol & Biol Vegetal, Block C2,Campo Grande, P-1749016 Lisbon, Portugal.
ResearcherID Number Carvalho, Luis/A-8820-2010; Martins-Loucao, Maria Amelia/H-1994-2011; Cacador, Isabel/C-2618-2012
ORCID Number Carvalho, Luis/0000-0003-4918-6160; Martins-Loucao, Maria Amelia/0000-0002-5883-2462; Cacador, Isabel/0000-0002-4475-6091
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Cited Reference Count 39
Times Cited 61
Total Times Cited Count (WoS, BCI, and CSCD) 71
Publisher City NEW YORK
Publisher Address 175 FIFTH AVE, NEW YORK, NY 10010 USA
ISSN 0940-6360
29-Character Source Abbreviation MYCORRHIZA
ISO Source Abbreviation Mycorrhiza
Publication Date DEC
Year Published 2001
Volume 11
Issue 6
Beginning Page 303
Ending Page 309
Digital Object Identifier (DOI) 10.1007/s00572-001-0137-6
Page Count 7
Web of Science Category Mycology
Subject Category Mycology
Document Delivery Number 510EN
Unique Article Identifier WOS:000173195900007
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