Environmental tolerances of rare and common mangroves along light and salinity gradients

Dangremond, Emily M.; Feller, Ilka C.; Sousa, Wayne P.

doi:10.1007/s00442-015-3408-1

Cited by 49 publications

(44 citation statements)

References 68 publications

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“…However, the parameters of chlorophyll fluorescence were not affected by the hypersalinity in the current study, and they were within the respective ranges found in healthy leaves (Krause and Weis, 1991). Meanwhile, although mangroves can endure extreme salinity, the mortality of A. marina increased under hypersaline soil (Dangremond et al, 2015). The density of seedlings, saplings, and trees was not significantly different along the tidal gradient, and A. marina could survive even in the hypersaline soil (45.6 ppt) in this study site.…”

Section: Discussionsupporting

confidence: 68%

Interactions between topsoil properties and ecophysiological responses of mangroves (Avicenniamarina) along the tidal gradient in an arid region in Qatar

Chang¹,

Han²,

Kim³

et al. 2020

Turk J Agric For

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This study investigated the interactions between topsoil properties and ecophysiological responses of Avicennia marina along the tidal gradient in an arid region in Qatar. In February 2017, three plots were established, each at a distance of 0 m (D0), 50 m (D50), and 100 m (D100) from the inland boundary of a mangrove forest. Soil samples were collected at 0-10-cm depth in each plot to determine the chemical properties, and the density of seedlings, saplings, and trees was measured. Moreover, above-(AGB) and below-ground biomass (BGB) were calculated using an allometric equation for A. marina with the measured diameter at breast height in February 2017. As an indicator of salt stress, chlorophyll fluorescence parameters were measured in October 2017. Salinity (45.60 ppt) and exchangeable sodium percentage (ESP; 29.02%) at D100 were significantly highest. AGB was higher at D100 (41.44 Mg ha-1) than at D0 (0 Mg ha-1) and D50 (7.33 Mg ha-1), and BGB was higher at D100 (44.91 Mg ha-1) than only at D0 (0 Mg ha-1). There was no significant difference in the density of seedlings, saplings, or trees or the chlorophyll fluorescence parameters among the plots. Salt stress was not induced despite the hypersalinity at this site, since A. marina growing in an arid climate can endure strong salinity. Soil pH was highest at D0, followed by at D50 and D100. Organic matter, total nitrogen, available phosphorus, and cation exchange capacity were significantly higher at D100 than at D0 and D50. Higher concentrations of nutrients on the seaward side might result from the tidal gradient and a large input of organic matter and low soil alkalinity.

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Section: Discussionsupporting

confidence: 68%

Interactions between topsoil properties and ecophysiological responses of mangroves (Avicenniamarina) along the tidal gradient in an arid region in Qatar

Chang¹,

Han²,

Kim³

et al. 2020

Turk J Agric For

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“…The early life stage is also an appropriate period to reduce the biological invasions by manipulating the degree of disturbance or productivity in forest management 87 . Shading, inundation or harvesting is the major measurements to control the invasiveness of a species 88,89 . Understanding how the introduced invasive and native species respond to changing environments will be a necessity for humankind to preserve robust ecosystem functioning.…”

Section: Discussion Performance Of Invasive and Native Mangrove Speciesmentioning

confidence: 99%

Introduced non-native mangroves express better growth performance than co-occurring native mangroves

Fazlioglu

Chen

2020

Sci Rep

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Mangroves are salt-tolerant woody species occurring in tropical/subtropical coastal habitats. plantation of fast-growing non-native mangrove species has been used as a tool for mangrove restoration/ reforestation in several countries. However, the fast-growth ability can make recently introduced species invasive as they can possibly replace co-occurring native mangroves through expressing higher growth performance and phenotypic plasticity. Therefore, quantifying growth differences between native versus non-native mangrove species is important for forest ecology and management. in this meta-analysis, we compared the growth performance of non-native and native mangrove species pairs by analysing all available results in the literature (33 studies). We found that non-native mangrove species performed better than co-occurring native mangrove species in their introduced regions (Log response ratio = 0.51 ± 0.05) and they also expressed higher trait plasticity. Therefore, these species can be potentially invasive owing to their greater competitive advantage. However, the growth difference was diminished at higher latitudes where native mangrove species seem to perform as well as non-native mangrove species do. This is the first meta-analysis on the growth response of mangroves and it has consequential management implications. We suggest that planting of non-native mangrove species should be avoided and their spread should be monitored.

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“…Similarly, A. germinans and Lumnitzera racemosa Willd. were found to survive and grow well at low and medium salinity, but only poorly at high salinity levels (Dangremond, Feller & Sousa, ). The same authors reported reduced growth rates for R. mangle and a particularly high sensitivity of P. rhizophorae to high salinity.…”

Section: Establishment At the Stranding Sitementioning

confidence: 99%

A general framework for propagule dispersal in mangroves

et al. 2019

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Dispersal allows species to shift their distributions in response to changing climate conditions. As a result, dispersal is considered a key process contributing to a species' long-term persistence. For many passive dispersers, fluid dynamics of wind and water fuel these movements and different species have developed remarkable adaptations for utilizing this energy to reach and colonize suitable habitats. The seafaring propagules (fruits and seeds) of mangroves represent an excellent example of such passive dispersal. Mangroves are halophytic woody plants that grow in the intertidal zones along tropical and subtropical shorelines and produce hydrochorous propagules with high dispersal potential. This results in exceptionally large coastal ranges across vast expanses of ocean and allows species to shift geographically and track the conditions to which they are adapted. This is particularly relevant given the challenges presented by rapid sea-level rise, higher frequency and intensity of storms, and changes in regional precipitation and temperature regimes. However, despite its importance, the underlying drivers of mangrove dispersal have typically been studied in isolation, and a conceptual synthesis of mangrove oceanic dispersal across spatial scales is lacking. Here, we review current knowledge on mangrove propagule dispersal across the various stages of the dispersal process. Using a general framework, we outline the mechanisms and ecological processes that are known to modulate the spatial patterns of mangrove dispersal. We show that important dispersal factors remain understudied and that adequate empirical data on the determinants of dispersal are missing for most mangrove species. This review particularly aims to provide a baseline for developing future research agendas and field campaigns, filling current knowledge gaps and increasing our understanding of the processes that shape global mangrove distributions.

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Environmental tolerances of rare and common mangroves along light and salinity gradients

Cited by 49 publications

References 68 publications

Interactions between topsoil properties and ecophysiological responses of mangroves (Avicenniamarina) along the tidal gradient in an arid region in Qatar

Interactions between topsoil properties and ecophysiological responses of mangroves (Avicenniamarina) along the tidal gradient in an arid region in Qatar

Introduced non-native mangroves express better growth performance than co-occurring native mangroves

A general framework for propagule dispersal in mangroves

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