Assessing the influence of artificially constructed channels in the growth of afforested black mangrove (Avicennia germinans) within an arid coastal region

Flores-Verdugo, Francisco; Zebadua-Penagos, F.; Flores‐de‐Santiago, Francisco

doi:10.1016/j.jenvman.2015.06.024

Cited by 16 publications

(8 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In general, the Chl-a of the species gradually varied throughout the year according to the climatic seasonality. Several authors [18,20,53] explain that this might be related to the photosynthetic efficiency of the species, to the tolerance of the luminosity conditions, and the use of solar radiation for the biomass production that is required for the growth of the leaves, which results in Chl-a variations. A lower photosynthetic production at the leaf level is due to a higher frequency of light saturation determined by seasonality.…”

Section: Discussionmentioning

confidence: 99%

“…However, the optimal growth of the mangrove species occurs in areas that receive at least 50% of solar attenuation. A higher frequency of light saturation and an excess of light is more likely to lead to photoinhibition and other harmful effects on the leaf [20]. Therefore, the concentration of photosynthetic pigments in the leaf is related to the physiological stress determined by the availability of water, the interstitial salinity, flooding periods, the variation in the incidence of solar irradiance, the climate influence, and humidity, influencing the growth of the leaf at the same time [21,22].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Local Drivers Associated to Temporal Spectral Response of Chlorophyll-a in Mangrove Leaves

et al. 2021

View full text Add to dashboard Cite

The pigment content in leaves has commonly been used to characterize vegetation condition. However, few studies have assessed temporal changes of local biotic and abiotic factors on leaf pigments. Here, we evaluated the effect of local environmental variables and tree structural characteristics, in the chlorophyll-a leaf concentration (Chl-a) associated with temporal change in two mangrove species. Rhizophora mangle (R. mangle) and Avicennia germinans (A. germinans) trees of a fringe mangrove forest (FMF) and lower basin mangrove forest (BMF) were visited over a period of one year, to obtain radiometric readings at leaf level to estimate Chl-a. Measurements on tree characteristics included diameter at breast height (DBH), basal area (BA), and maximum height (H). Environmental variables included soil interstitial water temperature (Ti), salinity (Si), and dissolved oxygen (Oi), flood level (fL), ambient temperature (Tamb), and relative humidity (Hrel). Generalized linear models and covariance analysis showed that the variation of Chl-a is mainly influenced by the species, the interaction between species and mangrove forest type, DBH, seasonality and its influence on the species, soil conditions, and fL. Studies to assess spatial and temporal change on mangrove forests using the spectral characteristics of the trees should also consider the temporal variation of leave chlorophyll-a concentration.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Local Drivers Associated to Temporal Spectral Response of Chlorophyll-a in Mangrove Leaves

et al. 2021

View full text Add to dashboard Cite

show abstract

“…However, in sites where monospecific forests were cleared, or when only one species can cope with the soil/hydrological conditions, the planting of such specific species can be a shortcut to stand development, allowing the conditions necessary for the development of other mangrove species. Avicennia germinans has already been used for restoration in hypersaline soils in degraded mangrove areas in semi-arid estuaries (Toledo et al, 2001;Flores-Verdugo et al, 2015). Rhizophora spp.…”

Section: Restoration Of Deactivated Pondsmentioning

confidence: 99%

20-Years Cumulative Impact From Shrimp Farming on Mangroves of Northeast Brazil

Lacerda

Ward

Godoy

et al. 2021

Front. For. Glob. Change

View full text Add to dashboard Cite

Brazilian mangroves cover about 11,100 km2 and provide a wide range of ecosystem services. Despite their importance, they are one of the most impacted ecosystems because of combined influences of climate change, pollution, and direct conversion and loss. A major driver of environmental impacts is shrimp farming and this is particularly acute in the semi-arid northeast of Brazil, where mangroves are constrained in a narrow band along ephemeral estuaries that are often impacted by multi-year droughts. Recent changes to Brazilian law, in particular the Forest Code, have weakened protection for mangroves and associated “apicum” (salt pan) ecosystems. In NE Brazil, most shrimp ponds are converted from mangrove-adjacent “apicuns” rather than the mangroves themselves with periodic hydrological connectivity through dammed channels, allowing the flushing of effluents. As a result, the main impacts on mangroves are typically indirect, because of pollution inputs from shrimp pond effluents and associated loss of ecosystem services including reductions in primary productivity, carbon storage capacity, resilience to other environmental stressors, their efficiency as estuarine filters, and biodiversity and abundance of subsistence use of marine species. Soil damage and infrastructure remaining after shrimp pond deactivation impairs mangrove recovery. This extends the duration of the damage and allows the occupation of degraded areas by other activities that can permanently impair ecosystem function. In this review, we address several aspects of the shrimp culture boom in NE Brazilian, their features and consequences, and the future of mangroves in the region considering climate change and rising poverty. Our conclusions on the practices and outcomes of shrimp farming in mangroves are likely to apply to areas with similar environmental settings, e.g., semiarid regions worldwide, and particularly in the Latin America and Caribbean region, and our findings can be taken into account to improve conservation and management of these forests at the least to a regional scale.

show abstract

“…En esta laguna costera subtropical, donde no hay una entrada de agua dulce constante, la marea juega un papel importante en el hidroperiodo (frecuencia y duración de la inundación) del bosque de mangle (Monroy-Torres et al 2015). Como consecuencia, la comunidad de mangle tipo borde se encuentra en una zona donde la frecuencia de inundación es mayor y la salinidad promedio es de 35 en comparación con la zona donde se ubica la comunidad tipo cuenca, donde la salinidad intersticial promedio es de 80 (Flores-Verdugo et al 2015. Por lo tanto, analizamos las 3 especies de mangle en una comunidad tipo borde (saludable) y en una comunidad tipo cuenca (estresado).…”

Section: áRea De Estudiounclassified

“…El ADC es una técnica de reducción dimensional equivalente al análisis de correlación canónico, el cual es usado para determinar relaciones entre las variables cuantificadas dentro de un espacio discriminante. En particular, el ADC and average salinity is 35 compared with the zone in which the basin community is found, where average interstitial salinity is 80 (Flores-Verdugo et al 2015. Hence, we analyzed the 3 mangrove species in a fringe mangrove community (healthy) and in a basin mangrove community (stressed).…”

Section: Análisis Estadísticounclassified

Discrimination of 3 dominant mangrove species from the Pacific coast of Mexico by spectroscopy on intact leaves

Flores‐de‐Santiago

Kovacs²,

Flores-Verdugo

2018

Cienc. Mar.

View full text Add to dashboard Cite

Spectral discrimination of mangrove leaves is the first step in classifying remotely sensed imagery of mangrove forests. The objective of this study was to analyze spectroscopic data on leaves from the upper and lower parts of mangrove canopies to discriminate species and physiognomic types. Leaf samples from the upper and lower parts of the canopies of 3 mangrove species (Avicennia germinans, Laguncularia racemosa, and Rhizophora mangle) in 2 physiognomic types (basin and fringe) were collected during 2 seasons (dry and rainy). Probability distribution and first-derivative plots were generated for every wavelength (450-1,000 nm) detected in all samples. With the plots, optimal wavelengths were selected and subsequently verified with a canonical discriminant analysis. Results indicated that all species in basin mangrove forests showed a unique distinction between the upper and lower leaves during the dry season. By contrast, species in fringe mangrove forests did not show this difference during both seasons. Optimal wavelengths for species discrimination were located between 540-560 nm and 700-720 nm, which correspond to the green and red-edge wavebands, respectively. Future studies using remote sensing data with the aforementioned wavebands can be conducted to discriminate physiognomic mangrove forest types and to increase accuracy in the classification of mangroves at the canopy level on the Pacific coast of Mexico.

show abstract

Assessing the influence of artificially constructed channels in the growth of afforested black mangrove (Avicennia germinans) within an arid coastal region

Cited by 16 publications

References 37 publications

Local Drivers Associated to Temporal Spectral Response of Chlorophyll-a in Mangrove Leaves

Local Drivers Associated to Temporal Spectral Response of Chlorophyll-a in Mangrove Leaves

20-Years Cumulative Impact From Shrimp Farming on Mangroves of Northeast Brazil

Discrimination of 3 dominant mangrove species from the Pacific coast of Mexico by spectroscopy on intact leaves

Contact Info

Product

Resources

About