Latitudinal gradients and climatic controls on reproduction and dispersal of the non-native mangrove Sonneratia apetala in China

Hong, Pubin; Wen, Yuye; Xiong, Yiyi; Diao, Lifu; Gu, Xiaoxiong; Feng, Hong-Tao; Chen, Yang; Chen, Luzhen

doi:10.1016/j.ecss.2020.106749

Cited by 16 publications

(11 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At global and regional scales, winter temperatures govern the distribution (Cavanaugh et al., 2018; Osland, Feher, et al, 2017; Woodroffe & Grindrod, 1991), abundance (Osland, Day, et al, 2017; Ross, Ruiz, Sah, & Hanan, 2009), height (Feher et al., 2017; Gabler et al., 2017; Rovai et al., 2016; Simard et al., 2019; Simpson, Osborne, Duckett, & Feller, 2017), diversity (Chen et al., 2017; Ellison, 2002; Morrisey et al., 2010; Osland, Feher, et al, 2017), productivity (Bouillon et al., 2008; Cavanaugh et al., 2014; Feher et al., 2017; Ribeiro, Rovai, Twilley, & Castañeda‐Moya, 2019), reproduction (Dangremond & Feller, 2016; Duke, 1990; Hong et al., 2020) and physiology (Lovelock, Krauss, Osland, Reef, & Ball, 2016; Stuart, Choat, Martin, Holbrook, & Ball, 2007) of mangrove forests. However, the influence of winter temperature regimes varies greatly within and across range limits (Cavanaugh et al., 2018; Cook‐Patton, Lehmann, & Parker, 2015; Osland, Feher, et al, 2017; Quisthoudt et al., 2012).…”

Section: Introductionmentioning

confidence: 99%

Frequency of extreme freeze events controls the distribution and structure of black mangroves (Avicennia germinans) near their northern range limit in coastal Louisiana

Osland

Day

Michot

2020

Diversity and Distributions

View full text Add to dashboard Cite

Aim Climate change is expected to result in the tropicalization of coastal wetlands in the northern Gulf of Mexico, as warming winters allow tropical mangrove forests to expand their distribution poleward at the expense of temperate salt marshes. Data limitations near mangrove range limits have hindered understanding of the effects of winter temperature extremes on mangrove distribution and structure. Here, we investigated the influence of extreme freeze events on the abundance, height and coverage of black mangroves (Avicennia germinans) near their northern range limit in Louisiana. Location Coastal Louisiana, USA. Methods We quantified the relationships between the frequency of extreme freeze events and A. germinans abundance, height and coverage using: (a) mangrove observation points recorded via aerial surveys from a fixed‐wing aircraft; (b) 30 years of temperature data; and (c) mangrove mortality and leaf damage temperature thresholds. We used freeze frequency data and mangrove–climate relationships to evaluate and spatially depict the risk of A. germinans freeze damage across Louisiana. Results We identified strong negative relationships between the frequency of extreme freeze events and A. germinans abundance, height and coverage. Avicennia germinans is most abundant, tall and continuous along the south‐eastern outer coast of Louisiana, where the frequency of extreme freeze events is reduced (i.e., lower risk of mangrove freeze damage) by the buffering effects of comparatively warm Gulf of Mexico waters. Conversely, the risk of A. germinans freeze damage has historically been very high across Louisiana's Chenier Plain and within more inland wetlands in the Deltaic Plain. Main conclusions Our analyses advance understanding of how the frequency of extreme freeze events controls the distribution, height and coverage of A. germinans near its northern range limit. In addition to informing climate‐smart coastal restoration efforts, our findings can be used to better anticipate and prepare for the tropicalization of temperate wetlands due to climate change.

show abstract

Section: Introductionmentioning

confidence: 99%

Frequency of extreme freeze events controls the distribution and structure of black mangroves (Avicennia germinans) near their northern range limit in coastal Louisiana

Osland

Day

Michot

2020

Diversity and Distributions

View full text Add to dashboard Cite

show abstract

“…Under the RFM results, there were barely any highly suitable areas for mangrove restoration in Fujian. For some mangrove species, the seed production decreases with increasing latitude, while the survival rate of seedlings increases at lower latitudes (Hong et al, 2021).…”

Section: Mangroves Suitable Conditions For Restorationmentioning

confidence: 99%

Mapping the Mangrove Forest Restoration Potential and Conservation Gaps in China Based on Random Forest Model

Zhang

et al. 2022

J. People Plants Environ

View full text Add to dashboard Cite

Background and objective: The area of mangroves is gradually decreasing globally, and mangroves are already one of the most threatened ecosystems. Despite net growth in the mangrove areas in China, the restoration potential of mangroves is still insufficient. This study proposed the Random forest model as an excellent data mining method to map the restoration potential based on the predicted probability of mangrove habitat suitability.Methods: We demonstrated the vital environmental variables influencing habitat suitability. The de-cisive advantages of RFM were parsimonious (variables selection), cost-effective (us-ing existing open-source data), accurate (training AUC was 0.89, testing AUC was 0.91), highly efficient (fast-training speed); and its results had high explanatory power. Here, we first mapped the conservation gaps using the RFM.Results: The results showed that temperature was the most important environmental factor influencing the habitat suit-ability of mangroves. The northern limit of suitable areas was around 24°44' N. The theoretical suitable habitat area for mangrove was 196,566.6 ha (the highly suitable area was 32,551.4 ha, the medium suitable area was 164,015.2 ha). The potential area for mangrove restoration was 176,264 ha (Guangdong with 104215.4 ha, Guangxi with 65957.5 ha).Conclusion: We proposed 24 sites with conservation gaps for mangrove forests restoration and nine potential sites as examples for the further restoration plan. We took one example site with high restoration potential for further explanation: how the key environmental factors influence the habitat suitability and how to use the infor-mation to guide the restoration strategies. RFM can be used as a data mining algo-rithm for the utmost use of the presence-only ecological data, objectively evaluating the suitability of species distribution, and providing scientifically technical data for species restoration planning.

show abstract

“…The elevation of Avicennia and Sonneratia plantation occurring along the seaward edge overlap with optimal elevations for Acanthus growth. In addition, the plantation thinning occurred in June, when no seedling recruitment occurred for Kandelia, Avicennia or Sonneratia in Futian; the fruiting period of Kandelia is March and April, and of Avicennia and Sonneratia is August (Hong et al, 2021;Lin, 1999). This absent fruiting window further facilitated the opportunity for Acanthus colonization (Figure 4b), as vegetative propagation is prolific in Acanthus and occurred in Futian during peak summer growth months when Acanthus was without competition from other mangroves.…”

Section: Acanthus Vegetation: a Persistent Opportunist Or Nurse Plant?mentioning

confidence: 99%

“…Before concern mounted over the invasive nature of this species, established plantations formed dense forests (Chen, 2019). Evidence from germination and floatation/dispersal studies, and niche competition assessments associated with attempting to ameliorate invasion have since indicated its daunting invasive potential (Hong et al, 2021), which heightened awareness in managing this non-native species versus native species for wood production. In some mangrove nature reserves of China, forest thinning became an important mechanism to remove Sonneratia plantations gradually while avoiding realized production losses from these plantations and maintaining maximum ecosystem function of natural mangrove forests in the vicinity.…”

Section: Introductionmentioning

confidence: 99%

Forest thinning in the seaward fringe speeds up surface elevation increment and carbon accumulation in managed mangrove forests

Chen

Lin

Krauss

et al. 2021

Journal of Applied Ecology

Self Cite

View full text Add to dashboard Cite

1. Mangroves are significant carbon (C) sinks and ecological engineers as they accumulate sediments and increase soil surface elevation. Thus, the forest management practice of thinning may not only alter forest structure, but also facilitate new biogeomorphological processes that affect soil development. Thinning may create additional opportunity for understorey species, such as the light-demanding Acanthus ilicifolius, to become a more prominent vegetation component of mangroves, which may further alter soil surface elevation trajectories.2. Forest structure and soil surface elevation change (SEC) were monitored along transects from the landward edge (upper intertidal) to seaward fringe before and after thinning of non-native Sonneratia apetala plantations along the seaward edge of a mangrove site in China. Soil C accumulation was also evaluated.3. Acanthus individuals colonized the forest gaps created by Sonneratia thinning in the seaward forest edge of the intertidal zones. In the absence of other pioneer species or other mangrove propagules/seeds, Acanthus pioneers occupied the areas rapidly (from 33.6 to 72.6 stems/m 2 ), and were successful opportunists. 4. Newly colonizing Acanthus vegetation significantly increased SEC from 25.1 mm/ year before Sonneratia was thinned to 46.5 mm/year after thinning-induced Acanthus occupation. Furthermore, Acanthus occupation enhanced soil C accumulation at the seaward edge to 49.9 MgC ha −1 year −1 ; a rate twofold higher than in the Sonneratia plantation before thinning. 5. Synthesis and applications. Prolific Acanthus growth formed small elevation mounds on the seaward forest edge, which was suspected as a positive effect induced by thinning Sonneratia plantations that further facilitated colonization of Acanthus clones. Thinning non-native Sonneratia disturbed the established zonation, altered SEC, and is facilitating further succession of these mangrove forests into un-occupied aquatic areas. Higher elevations created by Acanthus expansion (vertically and horizontally) may further promote a greater percentage of landward edge mangrove species to colonize at these more favourable intertidal elevations yielding at least short-term gains in soil carbon accumulation by altering ecosystem function. Silvicultural activity should consider unintended influences

show abstract

Latitudinal gradients and climatic controls on reproduction and dispersal of the non-native mangrove Sonneratia apetala in China

Cited by 16 publications

References 55 publications

Frequency of extreme freeze events controls the distribution and structure of black mangroves (Avicennia germinans) near their northern range limit in coastal Louisiana

Frequency of extreme freeze events controls the distribution and structure of black mangroves (Avicennia germinans) near their northern range limit in coastal Louisiana

Mapping the Mangrove Forest Restoration Potential and Conservation Gaps in China Based on Random Forest Model

Forest thinning in the seaward fringe speeds up surface elevation increment and carbon accumulation in managed mangrove forests

Contact Info

Product

Resources

About