Dominant species losing functions to salinity in the Sundarbans Mangrove Forest, Bangladesh

Islam, Md. Akramul; Dey, Tanmoy; Biswas, Rahul; Kamruzzaman, Md.; Partho, Shanewas Hossain; Das, Biplab Chandra

doi:10.1016/j.rsma.2022.102589

Cited by 4 publications

(3 citation statements)

References 53 publications

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“…Gradients of salinity have been linked to tidal zonation, species succession and abundance at the ecosystem scale (Greiner La Peyre et al, 2001;Perri, Suweis, et al, 2018;Wendelberger & Richards, 2017). Moderate salinity is generally associated with high species richness (Ball, 1998;Islam et al, 2016), which has been related to elevated productivity (Bai et al, 2021;Mittelbach et al, 2001). While the relationship between species diversity and productivity remains controversial and may depend on the spatial scale of interest (Mensah et al, 2018;Whittaker & Heegaard, 2003), biotic interactions (e.g.…”

Section: Introductionmentioning

confidence: 99%

Salinity‐induced limits to mangrove canopy height

Perri

Detto

Porporato

et al. 2023

Global Ecol Biogeogr

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AimMangrove canopy height is a key metric to assess tidal forests' resilience in the face of climate change. In terrestrial forests, tree height is primarily determined by water availability, plant hydraulic design, and disturbance regime. However, the role of water stress remains elusive in tidal environments, where saturated soils are prevalent, and salinity can substantially affect the soil water potential.LocationGlobal.Time PeriodThe canopy height dataset provides a global snapshot of the maximum mangrove height geographical distribution for the year 2000. Climate and environmental variables extend over the period 1970–2018.Major Taxa StudiedMangroves.MethodsWe use global observations of maximum canopy height, species richness, air temperature, and seawater salinity—a proxy of soil water salt concentration—to explore the causal link between salinity and mangrove stature.ResultsOur findings suggest that salt stress limits mangrove height. High salinity favours more salt‐tolerant species, narrowing the spectrum of viable traits. Highly salt‐tolerant mangroves have evolved to cope with high salt concentrations in the soil, but this adaptation comes at a cost. They typically have lower rates of photosynthesis and growth, resulting in reduced productivity and smaller stature compared to more salt‐sensitive mangrove species. This suggests a causal link between salinity, biodiversity, and tree height, where high salinity selects for more salt‐tolerant species that tend to be less productive and shorter.ConclusionsWe hypothesize that the salinity‐induced limit to mangrove canopy height is the direct result of a reduction of primary productivity, an increment in the risk of xylem cavitation, and an indirect consequence of the decrease in biodiversity. As sea‐level rise enhances coastal salinisation, failure to account for these effects can lead to incorrect estimates of future carbon stocks in Tropical coastal ecosystems and endanger preservation efforts.

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Section: Introductionmentioning

confidence: 99%

Salinity‐induced limits to mangrove canopy height

Perri

Detto

Porporato

et al. 2023

Global Ecol Biogeogr

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“…One factor affecting the most damaged mangrove forests is anthropogenic activities in the mangrove area, as many daily human activities impact water flow, such as soil substrata contamination, oil spills, and dumping of chemical liquids, detergents, and garbage which eventually polluted the riverbank and mangrove habitat (Nguyen, 2019) noticed that anthropogenic activities exert high pressure on mangrove forests, which impacts the state of mangrove forest habitats and potentially increases fragmentation, degradation, and habitat loss. The spatial distribution pattern of mangrove trees is caused by changes in the water level, and salinity is considered the main factor (Saha et al, 2020;Bhowmik et al, 2022;Islam et al, 2022). Ahmed et al (2022b) highlighted salinity as the most restrictive factor that reduces mangrove forest ecosystems and their associations.…”

Section: Introductionmentioning

confidence: 99%

“…Guo et al (2013) observed that temperature, carbon dioxide, salinity, light, nutrients, flooding, and specific biotic influences affected seedling survival and growth during the life stages of mangroves. In addition to the salinity, Islam et al (2022) expressed a correlation between salinity rate and changes in mangrove growth parameters, such as tree diameter, tree height, and basal area Even though there are many interrelated factors affecting mangrove growth, particularly in the early growth of seedlings, there is still limited knowledge and information on the impacts that specific variation in environmental factors and availability have on mangrove seedlings growth along riverbanks. Therefore, this study investigates the effect of environmental factors on the distribution, composition, and density of mangrove species along the riverbank of the Bintuni River in one of the most extensive mangrove areas in Indonesia.…”

Section: Introductionmentioning

confidence: 99%

Assessing Environmental Factors on the Growth and Distribution of Mangrove Seedlings Along the Bintuni Riverbank Area, Bintuni Bay, West Papua, Indonesia

Sraun¹,

Bawole²,

Marwa³

et al. 2023

J. Ecol. Eng.

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Bintuni Bay is considered one of the largest mangrove ecosystems in the world, and it has benefited a lot to local inhabitants and the surrounding ecosystem by underpinning and maintaining ecosystem balances. This study assesses various environmental factors that affect the flow of the Bintuni River and mangrove ecosystems as a result of potential degradation due to various anthropogenic activities and small-scale industries along the river. Several environmental parameters were collected, measured, and analyzed in the laboratory, while mangrove seedlings were measured and calculated at five different locations to obtain the importance value index (IVI). The results indicated slightly varied environmental parameters and concentrations at the five locations. However, there was no significant difference in the environmental parameters between the five different locations (p-value of 0.953 > 0.05, 95% of CI). Mangrove seedlings were distributed evenly along the five different locations which were indicated by the number of individuals (ind/ha). There was no significant correlation among these environmental parameters because of the low concentrations of chemical and biological compounds in the water. Moreover, mangroves can regenerate, grow, and exist even in extreme and unbalanced environmental niches.

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