Field Measurement and Prediction of Drag in a Planted <i>Rhizophora</i> Mangrove Forest

Yoshikai, Masaya; Nakamura, Takashi; Bautista, Dominic; Herrera, Eugene C.; Baloloy, A. B.; Suwa, Rempei; Basina, Ryan; Primavera‐Tirol, Yasmin H.; Blanco, A. C.; Nadaoka, Kazuo

doi:10.1029/2021jc018320

Cited by 6 publications

(11 citation statements)

References 72 publications

(157 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We tested the model against the measurements of flows in a model Rhizophora mangrove forest by Maza et al (2017) and in a real planted Rhizophora mangrove forest by Yoshikai et al (2022a). Both studies have provided detailed information of vegetation and hydrodynamic parameters that allow us to evaluate the model performance.…”

Section: Model Testingmentioning

confidence: 99%

“…We applied the model to a field mangrove setting examined by Yoshikai et al (2022a) to investigate the effectiveness of the proposed framework (Fig. 1) for reproducing the observed flow conditions.…”

Section: Application To a Field-based Studymentioning

confidence: 99%

“…1) for reproducing the observed flow conditions. Yoshikai et al (2022a) measured vegetation and hydrodynamic parameters at 17-year-old planted stands of Rhizophora apiculata in a mangrove forest locally known as Bakhwan Ecopark in Aklan, Philippines. The site corresponds to Bak2 in Fig.…”

Section: Application To a Field-based Studymentioning

confidence: 99%

“…3). Yoshikai et al (2022a) conducted hydrodynamic measurements during ebb tides on September 10 and 11, 2018 that corresponded to spring tide conditions. The measured parameters were water depth, spatially averaged velocity profile (based on measurements at four locations), water surface slope along a major flow direction, and bed shear stress.…”

Section: Application To a Field-based Studymentioning

confidence: 99%

“…Recently, insights on flow in Rhizophora mangrove forests have been increasing from laboratory-and field-based studies (e.g., Zhang et al, 2015;Maza et al, 2017;Shan et al, 2019;Yoshikai et al, 2022a). The availability of these studies allows us to formulate and test the representation of impacts of Rhizophora mangroves on flow in hydrodynamic models.…”

mentioning

confidence: 99%

See 4 more Smart Citations

Representing the impact of Rhizophora mangroves on flow and sediment transport in a hydrodynamic model (COAWST_rh v1.0): the importance of three-dimensional root system structures

Yoshikai

Nakamura

Herrera

et al. 2023

Preprint

View full text Add to dashboard Cite

Abstract. In hydrodynamic models, vegetation is commonly approximated as an array of vertical cylinders to represent its impacts on flow and sediment transport. However, this simple approximation may not be valid in the case of Rhizophora mangroves that have complicated three-dimensional root structures. Here, we present a new model to represent the impacts of Rhizophora mangroves on flow and sediment transport in hydrodynamic models. The model explicitly accounts for the effects of the three-dimensional root structures on flow and turbulence, as well as the effects of two different length scales of vegetation-generated turbulence characterized by stem diameter and root diameter. The model employs an empirical model for the Rhizophora root structures that can be applied using basic vegetation parameters (mean stem diameter and tree density), without rigorous measurements of the root structures. We showed that compared to the conventional approximation using an array of cylinders, the new model significantly improves the predictability of velocity, turbulent kinetic energy, and bed shear stress measured in a model and a real Rhizophora mangrove forest. The model further suggested the high efficiency of the three-dimensional root structures of Rhizophora mangroves on sedimentation, which allows a relatively high sediment supply to the forest but effectively regulates sediment erosion through reduced bed shear stress, compared to cylinder arrays that exhibit equivalent sediment supply or sediment retention. The presented model could be a fundamental tool to advance our understanding of the sedimentary processes in Rhizophora mangrove forests which are linked to mangroves’ vulnerability and ecosystem service.

show abstract

Section: Model Testingmentioning

confidence: 99%

Section: Application To a Field-based Studymentioning

confidence: 99%

Section: Application To a Field-based Studymentioning

confidence: 99%

Section: Application To a Field-based Studymentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations