Water use characteristics of black mangrove (Avicennia germinans) communities along an ecotone with marsh at a northern geographical limit

Ecohydrology ◽  
2012 ◽  
Vol 7 (2) ◽  
pp. 354-365 ◽  
Author(s):  
Ken W. Krauss ◽  
Karen L. McKee ◽  
Mark W. Hester
Chemosphere ◽  
2007 ◽  
Vol 67 (2) ◽  
pp. 330-334 ◽  
Author(s):  
D. Gonzalez-Mendoza ◽  
V. Ceja-Moreno ◽  
G. Gold-Bouchot ◽  
R.M. Escobedo-GraciaMedrano ◽  
M. Del-Rio ◽  
...  

2007 ◽  
Vol 57 (5) ◽  
pp. 900-905 ◽  
Author(s):  
Nelís Soto-Ramírez ◽  
Cristina Sánchez-Porro ◽  
Soniris Rosas ◽  
Wildaomaris González ◽  
Marian Quiñones ◽  
...  

A Gram-negative, short rod to oval-shaped bacterium (strain MW2aT) was isolated from the surface of leaves of the black mangrove Avicennia germinans and subjected to a polyphasic taxonomic study. Strain MW2aT was moderately halophilic, growing at NaCl concentrations in the range 0–25 % (w/v) with optimum growth at 5 % (w/v) NaCl. Growth occurred at 12–40 °C (optimum, 30–35 °C) and at pH 5.0–9.0 (optimum, pH 7.0–8.0). Strain MW2aT was strictly aerobic. Phylogenetic analysis based on the 16S rRNA gene showed that the strain belongs to the genus Halomonas. The closest relative was Halomonas marisflavi, with 98.6 % 16S rRNA gene sequence similarity. The DNA G+C content of strain MW2aT was 61.5 mol%, which is in the range of values for Halomonas species. DNA–DNA hybridization with H. marisflavi showed a relatedness of 42 % and lower values were obtained with respect to other related Halomonas species. The major fatty acids were C16 : 0, C19 : 0 cyclo ω8c, C18 : 1 ω7c and C12 : 0 3-OH. Overall, the phenotypic, genotypic and phylogenetic results presented in this study demonstrate that strain MW2aT represents a novel species within the genus Halomonas. The name Halomonas avicenniae sp. nov. is proposed, with strain MW2aT (=CECT 7193T=CCM 7396T) as the type strain.


2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Edward Pfeiler ◽  
Sarah Johnson ◽  
Therese A. Markow

Cytochromecoxidase subunit I (COI) sequences were used to estimate demographic histories of populations of the buckeye butterflyJunonia genoveva(Cramer) from Costa Rica and Mexico. Previous studies have revealed significant structure between populations ofJ. genovevafrom coastal regions of northwestern Mexico, which utilize black mangroveAvicennia germinans(Acanthaceae) as a larval host plant, and inland populations from Costa Rica that feed on different hosts in the families Acanthaceae and Verbenaceae. The Mexico population ofJ. genovevareported on here is located near the Northern limit of black mangrove habitat on the Pacific coast of North America and is hypothesized to have been established by northward migrations and colonization from southern source populations. The mismatch distribution, Bayesian skyline analyses, and maximum likelihood analyses carried out in FLUCTUATE were used to estimate changes in female effective population size (Nef) over time in the two populations. Differences found in COI haplotype diversity, present-dayNef, and the timing of population expansions are consistent with the hypothesis that the Mexico population ofJ. genovevais the more recently evolved.


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