Identifying trait‐based tolerance to sediment dynamics during seedling establishment across eight mangrove species

Hespen, Rosanna van; Hu, Zhan; Peng, Yisheng; Zhu, Zhenchang; Ysebaert, Tom; Bouma, Tjeerd J.

doi:10.1002/lno.12202

Cited by 13 publications

(13 citation statements)

References 52 publications

(91 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In this way, longer‐term models can incorporate annual seedling dynamics without the need to resolve hydrodynamics and morphological processes for the entire year. The resulting reduction in computational time can be invested in the consideration of other morphological and ecological processes relevant at these longer timescales, such as the influence of surface elevation and associated hydroperiod changes, competition for space and resources (Chen & Twilley, 1998; Clarke, 1995), or adaptive seedling growth in response to environmental forcing (Van Hespen et al., 2022).…”

Section: Discussionmentioning

confidence: 99%

“…These values are selected following previously reported Avicennia marina seedling characteristics from the Firth (Figures 3a–3c in Balke et al., 2015) and following Van Hespen et al. (2022). The initial shoot length was set equal to the propagule size.…”

Section: Methodsmentioning

confidence: 99%

“…Once established, the seedlings require a period with limited hydrodynamic disturbance and bed elevation change to survive and grow stronger, a period referred to as Window of Opportunity 2 (WoO 2) (Balke et al, 2015). Inundation-free periods and the increase in survival tolerances of individual mangrove seedlings have been quantified in experimental studies for several mangrove species (Balke et al, 2011(Balke et al, , 2013a(Balke et al, , 2013bVan Hespen et al, 2022), and were used to explain the absence of mangrove seedling establishment on an unvegetated mudflat (Balke et al, 2015). Hu et al (2015) showed that spatial variations in environmental forcing conditions also influence the seaward extent of marsh vegetation establishment.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Biophysical Modeling of Mangrove Seedling Establishment and Survival Across an Elevation Gradient With Forest Zones

Gijsman,

Horstman,

Swales

et al. 2024

JGR Earth Surface

View full text Add to dashboard Cite

Mangrove forest development critically depends on the establishment and survival of seedlings. Mechanistic insights into how water levels, waves and bed level dynamics influence the establishment process of individual mangrove seedlings are increasing. However, little is known about how spatial and temporal changes in water levels, waves and bed level dynamics across elevation gradients in mangrove forests facilitate/limit seedling dynamics. For this study, a new seedling establishment and growth model was integrated into a process‐based hydrodynamic and morphodynamic numerical model. This biophysical model was applied to a fringing mangrove forest located in the southern Firth of Thames, Aotearoa, New Zealand. This study quantifies the increasing establishment density and survival probability of mangrove seedlings from the lower‐elevated unvegetated intertidal flat toward the higher‐elevated mature mangrove forest. Three cross‐shore zones with distinctive seedling dynamics were identified: (a) a zone with daily tidal inundation where seedling dynamics are episodic and limited by the dispersal of individual propagules that rapidly anchor to the substrate by root growth, (b) a zone with daily to bi‐weekly tidal inundation where seedling dynamics respond to variations in spring‐neap tidal cycles and, (c) a zone with less than bi‐weekly inundation where seedling dynamics are governed by high propagule supply and seedling survival probability. The seedling establishment density and survival probability are dominated by annual extremes in tidal hydroperiod and bed shear stresses, respectively. The obtained parameterizations can be used to incorporate seedling dynamics in decadal‐timescale mangrove forest development models that are instrumental for mangrove management and restoration.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Biophysical Modeling of Mangrove Seedling Establishment and Survival Across an Elevation Gradient With Forest Zones

Gijsman,

Horstman,

Swales

et al. 2024

JGR Earth Surface

View full text Add to dashboard Cite

show abstract

“…However, when the sedimentation rate exceeds the rate of mangrove seedling growth, they can be buried as well. Recent experiment examined seedlings' accretion and erosion thresholds which showed that seedlings are likely to survival sediment accretion (10 out of 12 specimens) while, for some species, the seedlings can be negatively affected by sediment erosion [68]. Sediments can be brought to the mangrove region by massive flooding, upland erosion, and mud and debris flow.…”

Section: Coastal Sedimentation and Erosion Prevention Within Mangrovesmentioning

confidence: 99%

Coastal Protection by Planted Mangrove Forest during Typhoon Mangkhut

Zhang

Lin

Chen

2022

JMSE

View full text Add to dashboard Cite

Mangroves provide many ecosystem services, including coastal protection against storm surges and waves. As an adaptive method for coastal defense, mangroves were widely restored and planted in tropical and subtropical regions, such as the coastal regions in Southeast Asia. Field surveys were conducted to quantify the nature-based coastal protection provided by a planted mangrove forest along the coasts of Shanwei, Guangdong Province, China, under typhoon influence. The resilience of mangrove trees was assessed under the impact of Typhoon Mangkhut (2018), which induced a maximum storm surge of 1.74 m with a maximum wave height of 1.16 m in the study area. The pre- and post-typhoon surveys and hydrodynamic measurements were conducted at a mudflat with planted mangroves. The wave height reduction reached 77% over 100 m wide mangrove forest. Our results suggest that a six-year-old planted mangrove forest with a ~100 m width might withstand a super typhoon impact and provide substantial protection for the fish ponds and embankments behind the mangrove forest. No uproots or deadly breakage of stems were observed in the mangrove forest, while severe defoliation was spotted for a small portion of trees in the study area, mainly along the wind path, the windward edge of the forest, and among the taller plants. Obvious sedimentation in the mangrove front and the tidal flat was observed during the typhoon Mangkhut (2018) and the entire typhoon season of 2018.

show abstract

“…Those variables were also evaluated in studies with other mangrove species in controlled conditions (mesocosm experiments) (Balke et al, 2013;Gillis et al, 2019;Silva and Maia, 2019;van Hespen et al, 2022) and in field situations (Ewel and Baldwin, 2022;Sinsin et al, 2022;Sloey et al, 2022). Despite these studies, there are gaps in knowledge about the relationship between recruitment dynamics and seedling mortality.…”

mentioning

confidence: 99%

Recruitment and mortality of Rhizophora mangle L. seedlings in the Tropical Southwestern Atlantic mangrove

Lima,

Tognella,

Andrade

et al. 2023

Braz. J. Biol.

View full text Add to dashboard Cite

Studies in the long-term recruitment and mortality of mangrove seedlings can help to understand mangrove demography and its relationship with climatic variables, environmental restoration and advances in the ecology of this ecosystem. A seven-year population dynamics study of seedling recruitment and mortality in cohorts of Rhizophora mangle L. was carried out to identify expansion processes and patterns of survival in the understory of mangrove forests on the Atlantic coast of Brazil. The present study aimed to evaluate the relationship between recruitment and mortality R. mangle seedlings at the population level, salinity, and climatic variables (precipitation, temperature and humidity). On an annual scale, seedling recruitment was positively correlated with mean temperature. Seedling density was negatively correlated with the number of recruits and positively with the number of deaths. The number of recruits was associated with dead seedlings, temperature and precipitation considering a population scale, without grouping the data. The seedling density in the stands increased with the number of dead seedlings. Our findings described the relationship between climate variability (durability and magnitude of the dry/rainy season) and the long-term population dynamics of R. mangle seedlings in a poorly studied region and from what moment, on a monthly and annual time scale, did this relationship become significant and changes occur. The findings of this study provide information on the population dynamics of the species that will help in understanding mangrove demography. These results have important implications for projections about the recruitment and survival of the species thinking about to long-term climate change that will modify current weather patterns and mangrove conservation efforts.

show abstract

Identifying trait‐based tolerance to sediment dynamics during seedling establishment across eight mangrove species

Cited by 13 publications

References 52 publications

Biophysical Modeling of Mangrove Seedling Establishment and Survival Across an Elevation Gradient With Forest Zones

Biophysical Modeling of Mangrove Seedling Establishment and Survival Across an Elevation Gradient With Forest Zones

Coastal Protection by Planted Mangrove Forest during Typhoon Mangkhut

Recruitment and mortality of Rhizophora mangle L. seedlings in the Tropical Southwestern Atlantic mangrove

Contact Info

Product

Resources

About