Root biomass and production of mangroves surrounding a karstic oligotrophic coastal lagoon

Adame, Maria Fernanda, Teutli, Claudia, Santini, Nadia S., Caamal, Juan P., Zaldivar-Jimenez, Arturo, Hernndez, Raquel and Herrera-Silveira, Jorge A. (2014) Root biomass and production of mangroves surrounding a karstic oligotrophic coastal lagoon. Wetlands, 34 3: 479-488. doi:10.1007/s13157-014-0514-5


Author Adame, Maria Fernanda
Teutli, Claudia
Santini, Nadia S.
Caamal, Juan P.
Zaldivar-Jimenez, Arturo
Hernndez, Raquel
Herrera-Silveira, Jorge A.
Title Root biomass and production of mangroves surrounding a karstic oligotrophic coastal lagoon
Journal name Wetlands   Check publisher's open access policy
ISSN 1943-6246
0277-5212
Publication date 2014-06-01
Year available 2014
Sub-type Article (original research)
DOI 10.1007/s13157-014-0514-5
Volume 34
Issue 3
Start page 479
End page 488
Total pages 10
Place of publication Dordrecht, Netherlands
Publisher Springer Netherlands
Language eng
Formatted abstract
Root production influences a range of belowground processes, such as soil accretion, carbon sequestration and nutrient acquisition. Here, we measured biomass and root production of mangroves surrounding a karstic oligotrophic lagoon that spans a nutrient and salinity gradient. We also measured forest structure and soil physicochemical conditions (salinity, bulk density, carbon, nitrogen (N) and phosphorus (P)) in order to determine factors associated with root production. We tested the following hypotheses: 1) root biomass and production increase at low soil P and N in order to maximize resource utilization, and 2) root biomass and production increase with high interstitial salinity. Root biomass (947–3,040 g m−2) and production (0.46–1.85 g m−2 day−1) increased where soil P and interstitial salinity were relatively high. Thus, we rejected the first hypothesis and confirmed the second. The larger root fraction (5–20 mm) was the major contributor to root biomass and production. Our findings suggest that root production and thus capacity for belowground carbon storage in karstic regions, where P is often limiting, is greater where interstitial salinity and P are higher. This contrasts with past assessments indicating that P-deficiency stimulates root growth, suggesting wide variation in belowground responses in mangroves.
Keyword Phosphorus
Nitrogen
Salinity
Belowground production
Karst
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
School of Biological Sciences Publications
 
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