Hidden founders? Strong bottlenecks and fine-scale genetic structure in mangrove populations of the Cameroon Estuary complex

Ngeve, Magdalene N.; Stocken, Tom Van der; Menemenlis, Dimitris; Koedam, Nico; Triest, Ludwig

doi:10.1007/s10750-017-3369-y

Cited by 23 publications

(45 citation statements)

References 67 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Release–recapture techniques have been used frequently over recent decades (Yamashiro, ; Chan & Husin, ; Komiyama, Chimchome & Kongsangchai, ; McGuinness, ; Breitfuss, Connolly & Dale, ; Sousa et al , ; De Ryck et al , ; Van der Stocken et al , ; Ngeve et al , ). They are the most basic yet robust means and probably the most labour‐intensive way to investigate the movement of individual propagules and evaluate potential connectivity between sites.…”

Section: Spatial Scale Of Dispersal and Methodological Approachesmentioning

confidence: 99%

A general framework for propagule dispersal in mangroves

et al. 2019

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: Spatial Scale Of Dispersal and Methodological Approachesmentioning

confidence: 99%

A general framework for propagule dispersal in mangroves

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…At each locality, two transects parallel to the shoreline (one per physiognomic types of mangrove) of 450 m in length and 200 m in width were delimited. In each transect, five young leaves with petioles were collected from 15 trees of each physiognomic types selected haphazardly, which ensures a minimal distance of 10 m between samples to avoid sampling the same tree [18]. Immediately after cutting the leaves, PVP-40 (Sigma-Aldrich) was added at the cutting petiole zone for preservation.…”

Section: Sampling Sites and Collectionmentioning

confidence: 99%

Genetic Structure and Connectivity of the Red Mangrove at Different Geographic Scales through a Complex Transverse Hydrological System from Freshwater to Marine Ecosystems

et al. 2020

View full text Add to dashboard Cite

Mangrove forests are ecologically and economically valuable resources composed of trees morphologically and physiologically adapted to thrive across a range of habitats. Although, mangrove trees have high dispersion capacity, complexity of hydrological systems may lead to a fine-scale genetic structure (FSGS). The Transverse Coastal Corridor (TCC) is an interesting case of hydrological systems from fresh to marine waters where mangrove forests dominate. We evaluated genetic diversity and structure of Rhizophora mangle across a range of hydrological conditions within the TCC using inter-simple sequence repeat molecular markers. Sampling included four hydrological systems, two localities inside each system, and fringe and dwarf trees. Genetic differentiation was evaluated at local (<100 km) and fine (<10 km) scales through a set of analyses, and genetic diversity was evaluated at all scale levels and between fringe and dwarf physiognomic types. Rhizophora mangle exhibited a high genetic structure at both scales with high genetic diversity. The genetic structure observed among hydrological systems likely reflects the historical dispersion of mangroves, whereas the FSGS reflect contemporary processes such as seed dispersal restriction, habitat fragmentation, and local water flow regimes. A higher genetic diversity for dwarf than for fringe trees and differentiation between both physiognomic types at a fine-scale were observed and discussed.

show abstract

“…The climate-driven expansion of mangroves has been hypothesized to reduce gene diversity and cause founder effects or a genetic bottleneck at the range edge (Triest, 2008;Pil et al, 2011;Sandoval-Castro et al, 2012). Genetic studies are becoming much more common in mangrove ecology to elucidate processes that promote or inhibit mangrove dispersal (Ngeve et al, 2017). Yet, contrary to expectations, dramatic increases in the genetic diversity of mangrove trees colonizing the northeast coast of Florida have been observed as a result of increased long-distance dispersal of propagules by strong poleward-flowing ocean currents (Kennedy et al, 2016).…”

Section: Potential Mangrove Gains Due To Climate Changementioning

confidence: 99%

The state of the world’s mangroves in the 21st century under climate change

et al. 2017

View full text Add to dashboard Cite

Concerted mangrove research and rehabilitation efforts over the last several decades have prompted a better understanding of the important ecosystem attributes worthy of protection and a better conservation ethic toward mangrove wetlands globally. While mangroves continue to be degraded and lost in specific regions, conservation initiatives, rehabilitation efforts, natural regeneration, and climate range expansion have promoted gains in other areas, ultimately serving to curb the high mangrove habitat loss statistics from the doom and gloom of the 1980s. We highlight those trends in this article and introduce this special issue of Hydrobiologia dedicated to the important and recurring Mangrove and Macrobenthos Meeting. This collection of papers represents studies presented at the fourth such meeting (MMM4) held in St. Augustine, Florida, USA, on July 18-22, 2016. Our intent is to provide a balanced message about the global state of mangrove wetlands by describing recent reductions in net mangrove area losses and highlighting primary research studies presented at MMM4 through a collection of papers. These papers serve not only to highlight on-going global research advancements, but also provide an overview of the vast amount of data on mangrove ecosystem ecology, biology and rehabilitation that emphasizes the uniqueness of the mangrove community.

show abstract

Hidden founders? Strong bottlenecks and fine-scale genetic structure in mangrove populations of the Cameroon Estuary complex

Cited by 23 publications

References 67 publications

A general framework for propagule dispersal in mangroves

A general framework for propagule dispersal in mangroves

Genetic Structure and Connectivity of the Red Mangrove at Different Geographic Scales through a Complex Transverse Hydrological System from Freshwater to Marine Ecosystems

The state of the world’s mangroves in the 21st century under climate change

Contact Info

Product

Resources

About