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Francisco Floresverdugo - One of the best experts on this subject based on the ideXlab platform.
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potential use of two subtropical mangrove species Laguncularia racemosa and rhizophora mangle for nutrient removal in closed recirculating systems uso potencial de dos especies de mangle subtropical Laguncularia racemosa y rhizophora mangle para la r
2015Co-Authors: Leonardo Moroyoquirojo, Francisco Floresverdugo, Diana Cecilia Escobedourias, Francisco Floresdesantiago, Fernando GonzalezfariasAbstract:Six silvofishery systems were constructed to estimate the potential use of mangrove seedlings for nutrient removal. Two systems did not contain seedlings (i.e., control treatment), while the remaining systems were divided into separate treatments using two mangrove species (Laguncularia racemosa and Rhizophora mangle). Each system consisted of two water tanks linked by two hoses. The first tank contained 150 poeciliid fishes, while the second contained a biological filter of gravel and sand on the bottom, as well as a hydroponic arrangement of 34 seedlings. Water exchange between both tanks was performed over a 24-h period, every ten days for seven months, and the concentration of nutrients (NH4 + , NO2 - , NO3 - , and PO4 -3 ) was measured every 8 h. Laguncularia racemosa showed a higher growth rate compared to R. mangle, but there were no differences regarding the growth of fishes among the six systems. Final dissolved inorganic nitrogen removal was 42% in the control treatment and 90% in both treatments using mangroves. Dissolved inorganic phosphorus removal was 45% in the control treatment, 44% in the L. racemosa treatment, and 35% in the R. mangle treatment. Our results indicate that both mangrove species are capable of removing a considerable amount of nitrogen, but phosphorus removal was unsatisfactory.
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growth of three subtropical mangrove species in response to varying hydroperiod in an experimental tank
Ciencias Marinas, 2014Co-Authors: Mariana Monroytorres, Francisco Floresverdugo, Francisco FloresdesantiagoAbstract:The effect of hydroperiod on the survival and growth of Avicennia germinans , Laguncularia racemosa , and Rhizophora mangle seedlings under experimental c on...
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nutrient removal using two species of mangrove rhizophora mangle and Laguncularia racemosa in experimental shrimp litopenaeus vannamei culture ponds remocion de nutrientes con dos especies de mangle rhizophora mangle y Laguncularia racemosa en estanques experimentales de cultivo de camaron litopenaeus vannamei
2012Co-Authors: Leonardo Moroyoquirojo, Francisco Floresverdugo, Gustavo Hernandezcarmona, Margarita Casasvaldez, R Cervantesduarte, E H NavasanchezAbstract:The nutrient removal capacity of two species of mangrove (Rhizophora mangle and Laguncularia racemosa) was assessed in shrimp (Litopenaeus vannamei) culture ponds. One pond contained R. mangle seedlings and another L. racemosa seedlings, while a third (control pond) was left without seedlings. Treatment ponds contained 20 floating platforms with 720 mangrove seedlings. Water was pumped from the estuary into the ponds. Nutrient (NO3 - , NO2 - , NH4 + , and PO4 -3 ) concentrations from the pond effluents were analyzed during the water exchange every 10 days. The results showed that L. racemosa removed 83.4% of dissolved inorganic nitrogen (DIN) and 45% of PO4 and R. mangle removed 79% of DIN and 40% of PO4, while 30% of DIN and 23% of PO4 was removed in the control pond. The flux of nutrients from the influent water to the ponds was 7269 g of N and 3095 g of P. In the ponds with mangroves, the nutrients were reduced to 1018-1071 g of N and 609-724 g of P. In the control pond, the effluent water nutrient concentrations were 5564 g of N and 1583 g of P. The nutrients accumulated in the mangrove tissue were 18,014-16,711 g of N and 5976-5832 g of P. Volatilization of ammonium and adsorption of phosphorus by sediments were 17,298-18,570 g of N and 6249-6268 g of P, and in the control pond, 30,022 g of N and 10,922 g of P, respectively. The final length for L. racemosa was 48 cm and the root length was 54 cm. For R. mangle, the final length was 38 cm and the root length was 46 cm. Shrimp survival was 70%, with individuals reaching 10.4 g in weight and 12.2 cm in length. We concluded that the nutrient removal percentage in ponds with mangrove seedlings was higher than in the pond without seedlings, improving water quality and reducing nutrients in the effluent.
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mapping mangrove leaf area index at the species level using ikonos and lai 2000 sensors for the agua brava lagoon mexican pacific
Estuarine Coastal and Shelf Science, 2005Co-Authors: Joh M Kovacs, Jinfei Wang, Francisco FloresverdugoAbstract:Abstract Using both IKONOS and in situ LAI-2000 sensor data, a map of estimated LAI, based on NDVI, was created for the Agua Brava Lagoon, Mexican Pacific. The LAI values were then aggregated according to four classes; red mangrove (Rhizophora mangle), healthy white mangrove (Laguncularia racemosa), poor condition white mangrove and dead mangrove. Of the live mangrove, calculated at approximately 85% of the forest, mean LAI values of 2.49, 1.74 and 0.85 were determined for the red, healthy white and poor condition white mangrove, respectively. Excluding the dead areas, an overall estimated mangrove LAI value of 1.81 was ascertained for the 71 km2 of mapped mangrove forest. Although the results do suggest the technique as a very rapid and effective method for monitoring the condition of mangroves at the species level, potential limitations are also discussed.
Jeannine M Lessmann - One of the best experts on this subject based on the ideXlab platform.
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fiddler crab burrowing affects growth and production of the white mangrove Laguncularia racemosa in a restored florida coastal marsh
Marine Biology, 2009Co-Authors: Nancy F Smith, Christie Wilcox, Jeannine M LessmannAbstract:Positive plant–animal interactions are important in community ecology, but relatively little attention has been paid to their effect on the production of mangroves, dominant halophytic trees in tropical coastal marshes. Here, the role of fiddler crab (Uca spp.) burrowing on the growth and production of the white mangrove, Laguncularia racemosa (<2 years old), was examined in a restored marsh in Tampa Bay, Florida (27°41.65 N, 82°30.34 W) with manipulative experiments from June 2006 to May 2007. Fiddler crab burrowing significantly increased mangrove height by 27%, trunk diameter by 25%, and leaf production by 15%, compared to mangroves in crab exclusion enclosures. Additionally, the exclusion of fiddler crabs significantly increased interstitial water salinity from 32.4 to 44.2, and decreased the oxidation–reduction potential of the low organic sediments, but did not affect soil pH or sulfide concentration. Mangrove height, trunk diameter, and leaf production along a transect that varied in crab burrow density were positively associated with the number of crab burrows. Further, the density of sympatric Spartina alterniflora shoots was positively correlated with crab burrow density along the transect. As in temperate marshes, fiddler crabs can have significant ecological effects on mangrove communities, serving as ecological engineers by modulating the amount of resources available to marsh plants, and by altering the physical, chemical, and biological state of these soft sediment communities. In restored coastal systems that typically have very poor sediment quality, techniques such as soil amendment could be used to facilitate a more natural interaction between crabs and mangroves in ecosystem development.
Elivânia Maria Da Silva - One of the best experts on this subject based on the ideXlab platform.
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caracterizacao fotoquimica atividade antioxidante e funcoes biologicas do extrato aquoso das folhas de Laguncularia racemosa l c f gaertn
2019Co-Authors: Elivânia Maria Da SilvaAbstract:Laguncularia racemosa, (Combretaceae), is known as the white mangrove, a Brazilian mangrove plant. Popularly its leaves are used in the form of teas and infusions to treat diarrheal and febrile pictures. The present study aims at the phytochemical characterization of the aqueous extract of the leaves of Laguncularia racemosa (EALr). In order to evaluate antioxidant activities, antimicrobial, as well as cytotoxicity and immunomodulatory profile. Phytochemical characterization tests and antioxidant profile verified by DPPH and total antioxidant methods were performed. For the antimicrobial activity the disc diffusion and dilution methods were used in growth broths. Cytotoxicity was analyzed at concentrations of (50-3 μg / mL) by labeling the cells with annexin V and propidium iodide. Cytokine measurements were performed at concentrations of 6 μg / mL and 3 μg / mL using the Cytometric Bead Array (CBA) kit. At these concentrations, we analyzed nitric oxide by the Griess method and performed the cell proliferation assay by labeling the splenocyte cells of mice with the carboxyfluorescein diacetate (CFSE) 5-succinimidyl ester reagent. The phytochemical assays of the aqueous extract of Laguncularia racemosa showed the presence of flavonoids and phenolic compounds with significant antioxidant activity,but low antimicrobial activity. We verified low cytotoxicity at the concentration of 6 μg / ml and stimulation of cellular proliferation, with anti-inflammatory profile. These findings suggest actions against inflammatory diseases and cicatricial development.
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Caracterização fotoquímica, atividade antioxidante e funções biológicas do extrato aquoso das folhas de Laguncularia racemosa (L.) C.F.Gaertn
'Revista Brasileira de Hematologia e Hemoterapia (RBHH)', 2019Co-Authors: Elivânia Maria Da SilvaAbstract:Laguncularia racemosa, (Combretaceae), é conhecida como mangue branco, uma planta do mangue do Brasil. Popularmente suas folhas são utilizadas na forma de chás e infusões para tratar quadros diarreicos e febris. O presente estudo visa a caracterização fitoquímica do extrato aquoso das folhas de Laguncularia racemosa (EALr). De modo a avaliar as atividades antioxidantes, antimicrobianas, bem como citotoxicidade e perfil imunomodulatório. Foram realizados ensaios de caracterização fitoquímica e o perfil antioxidante verificado pelos métodos de DPPH e antioxidantes totais. Para a atividade antimicrobiana utilizou-se os métodos de difusão em discos e diluição em caldos de crescimento. A citotoxicidade foi analisada nas concentrações de (50 – 3 μg/mL), por meio da marcação das células com anexina V e iodeto de propídio. A medição de citocinas ocorreu nas concentrações de 6 μg/mL e 3 μg/mL, utilizando o kit Cytometric Bead Array (CBA). Nessas concentrações, analisamos óxido nítrico pelo método de Griess e realizamos o ensaio de proliferação celular, por meio da marcação das células de esplenócitos de camundongos com o reagente 5(6) - éster de N-succinimidil de diacetato de carboxifluoresceína (CFSE). Os ensaios fitoquimicos do extrato aquoso de Laguncularia racemosa demonstraram presença de flavonoides e compostos fenólicos, com significativa atividade antioxidante, contudo baixa atividade antimicrobiana. Verificamos baixa citotoxicidade na concentração de 6 μg/ml e estimulação de proliferação celular, com perfil antiinflamatório. Esses achados sugerem ações contra doenças inflamatórias e no desenvolvimento cicatricial.Laguncularia racemosa, (Combretaceae), is known as the white mangrove, a Brazilian mangrove plant. Popularly its leaves are used in the form of teas and infusions to treat diarrheal and febrile pictures. The present study aims at the phytochemical characterization of the aqueous extract of the leaves of Laguncularia racemosa (EALr). In order to evaluate antioxidant activities, antimicrobial, as well as cytotoxicity and immunomodulatory profile. Phytochemical characterization tests and antioxidant profile verified by DPPH and total antioxidant methods were performed. For the antimicrobial activity the disc diffusion and dilution methods were used in growth broths. Cytotoxicity was analyzed at concentrations of (50-3 μg / mL) by labeling the cells with annexin V and propidium iodide. Cytokine measurements were performed at concentrations of 6 μg / mL and 3 μg / mL using the Cytometric Bead Array (CBA) kit. At these concentrations, we analyzed nitric oxide by the Griess method and performed the cell proliferation assay by labeling the splenocyte cells of mice with the carboxyfluorescein diacetate (CFSE) 5-succinimidyl ester reagent. The phytochemical assays of the aqueous extract of Laguncularia racemosa showed the presence of flavonoids and phenolic compounds with significant antioxidant activity,but low antimicrobial activity. We verified low cytotoxicity at the concentration of 6 μg / ml and stimulation of cellular proliferation, with anti-inflammatory profile. These findings suggest actions against inflammatory diseases and cicatricial development
Christie Wilcox - One of the best experts on this subject based on the ideXlab platform.
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fiddler crab burrowing affects growth and production of the white mangrove Laguncularia racemosa in a restored florida coastal marsh
Marine Biology, 2009Co-Authors: Nancy F Smith, Christie Wilcox, Jeannine M LessmannAbstract:Positive plant–animal interactions are important in community ecology, but relatively little attention has been paid to their effect on the production of mangroves, dominant halophytic trees in tropical coastal marshes. Here, the role of fiddler crab (Uca spp.) burrowing on the growth and production of the white mangrove, Laguncularia racemosa (<2 years old), was examined in a restored marsh in Tampa Bay, Florida (27°41.65 N, 82°30.34 W) with manipulative experiments from June 2006 to May 2007. Fiddler crab burrowing significantly increased mangrove height by 27%, trunk diameter by 25%, and leaf production by 15%, compared to mangroves in crab exclusion enclosures. Additionally, the exclusion of fiddler crabs significantly increased interstitial water salinity from 32.4 to 44.2, and decreased the oxidation–reduction potential of the low organic sediments, but did not affect soil pH or sulfide concentration. Mangrove height, trunk diameter, and leaf production along a transect that varied in crab burrow density were positively associated with the number of crab burrows. Further, the density of sympatric Spartina alterniflora shoots was positively correlated with crab burrow density along the transect. As in temperate marshes, fiddler crabs can have significant ecological effects on mangrove communities, serving as ecological engineers by modulating the amount of resources available to marsh plants, and by altering the physical, chemical, and biological state of these soft sediment communities. In restored coastal systems that typically have very poor sediment quality, techniques such as soil amendment could be used to facilitate a more natural interaction between crabs and mangroves in ecosystem development.
Jorge De La Rosa-vélez - One of the best experts on this subject based on the ideXlab platform.
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Development of microsatellite markers for the white mangrove ( Laguncularia racemosa C.F. Gaertn., Combretaceae)
Conservation Genetics, 2007Co-Authors: Alejandro Nettel, Richard S. Dodd, Jorge A. Cid-becerra, Jorge De La Rosa-vélezAbstract:We developed nine new microsatellite markers for the white mangrove (Laguncularia racemosa C.F. Gaertn.), a mangrove species widely distributed in the Western Hemisphere. The loci were developed from a sample collected in Baja California Sur, Mexico, and were screened for polymorphism in 108 individuals from the Pacific Coast of Mexico and Costa Rica. The level of polymorphism was relatively low, from two to four alleles. These are the first set of polymorphic markers described for L. racemosa and should be of value in studying regional genetic differentiation among natural populations of this species.
