Exploration of fisheries management policies in the Gulf of Nicoya (Costa Rica) using ecosystem modelling

Alms, Viola; Romagnoni, Giovanni; Wolff, Matthias

doi:10.1016/j.ocecoaman.2022.106349

Cited by 5 publications

(2 citation statements)

References 39 publications

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“…The study area is located on the Pacific coast of Costa Rica (red rectangle in Figure 1A) in the western zone of the Gulf of Nicoya (green rectangle in Figure 1B), which is one of the most important and studied estuaries on the Pacific coast of Costa Rica (Vargas, 2016) due to its artisanal fisheries (Alms et al, 2022) and aquaculture potential (Calleja et al, 2022). The Gulf of Nicoya has a mangrove cover area of 19924 ha (Hernańdez-Blanco et al, 2021) and comprises a variety of species such as Avicennia bicolor, Avicennia germinans, Conocarpus erectus, Laguncularia racemosa, Pelliciera rhizophorae, Rhizophora harrisonii, Rhizophora mangle and Rhizophora racemosa (SINAC, 2019).…”

Section: Field Campaign 211 Study Areamentioning

confidence: 99%

Integrated drag coefficient formula for estimating the wave attenuation capacity of Rhizophora sp. mangrove forests

Lopez-Arias,

Maza,

Calleja

et al. 2024

Front. Mar. Sci.

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Recently, bulk drag coefficient (C˜D) formulations used to quantify wave energy dissipation by Rhizophora mangroves were developed from laboratory data; however, these formulations have not yet been validated with field data. Additionally, due to the complex geometry of mangrove trees within forests and spatial variability, common criteria for determining the adequate geometric characteristics of mangrove forests are lacking and are required to obtain accurate definitions for C˜D. This paper addresses these knowledge gaps by proposing a newly integrated C˜D formulation based on the comprehensive characterization of a Rhizophora mangle forest combined with wave measurements in field, and by using numerical modeling for the calibration process. The field campaign consisted of 23 continuous days of recorded wave data and spatial distribution observations of the geometric characteristics of the mangrove forest. The variation in frontal area per unit height per square meter (Ahm) along the mangrove forest was reported for three zones with different densities identified along the study transect, with decreasing root density from the vegetation edge to the forest interior. On average, the incident wave height decreased by 34% at 63 m in mangrove forests, and the wave attenuation ratios (r) varied between 0.001 and 0.01 m-1. To estimate the C˜D values associated with these wave height attenuation ratios, the Simulating Waves Nearshore (SWAN) numerical model was used to calibrate the model results with the field observations. The variation in the tree frontal area along the mangrove forest and the wave conditions at the site are considered during the calibration process. To further characterize C˜D for this type of mangrove species, the C˜D values acquired from the calibration together with the values reported in the literature from laboratory experiments are presented as a function of the Keulegan-Carpenter number (KC). Root diameter is defined as the characteristic length according to the inherent geometric characteristics of a Rhizophora sp. forest. The new formulation allows us to predictably estimate C˜D values that can be used as inputs in drag force-based models to estimate the attenuation of wave energy produced by Rhizophora sp. forests.

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Section: Field Campaign 211 Study Areamentioning

confidence: 99%

Integrated drag coefficient formula for estimating the wave attenuation capacity of Rhizophora sp. mangrove forests

Lopez-Arias,

Maza,

Calleja

et al. 2024

Front. Mar. Sci.

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“…Lercari et al, 2015; Bentley et al, 2019). These tools can help scientists and resource managers better understand complex ecological systems and the potential consequences of management decisions (Alms et al, 2022; Mendoza et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Integrating the local knowledge of fishers into an ecological model for the sustainable management of a protected coastal lagoon area in Uruguay

Malfatti,

Lercari,

Bergamino

2023

Aquatic Ecosystem Health &Amp; Management

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This study uses the local knowledge of artisanal fishers to assess ecosystem structure, functioning, and fishing impacts within a coastal lagoon in Uruguay. To this end, we used an Ecopath with Ecosim modelling approach based on fishers’ knowledge and scientific data. The model considered 23 functional groups, while three fleets represented fishing activities targeting different species. The model output shows a foodweb which spans four trophic levels, including fish species as top predators, such as the flatfish Paralichthys orbignyanus and the tararira Hoplias malabaricus. Furthermore, according to fishers’ knowledge, gastropods, polychaetes, and bivalves constitute primary consumers, while detritus and phytoplankton represent the primary food sources. The trophic impact analysis shows that the fish Mugil spp. and Odontesthes spp. generate important positive and negative impacts on most other ecosystem components, while fishing impacts occur at moderate exploitation levels on the targeted fish species. The indicators of the ecosystem effects of fishing including The Trophic Level of the Catch ranging from 2.4 to 2.6, the Primary Production Required showing relative low values of 2.3% and low probability of an ecosystem being sustainably fished alert us to the risk of ecosystem-level overfishing. The vast potential of fishers’ knowledge in research can allow the co-creation of new insights into ecosystem structure and function. By including fishers in research, local communities can be empowered and benefit from management decisions through their trust in science.

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How can governments and fishermen collaborate to participate in a fishing ban for ecological restoration?

Sun,

Zhang

et al. 2024

Journal of Environmental Management

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Exploration of fisheries management policies in the Gulf of Nicoya (Costa Rica) using ecosystem modelling

Cited by 5 publications

References 39 publications

Integrated drag coefficient formula for estimating the wave attenuation capacity of Rhizophora sp. mangrove forests

Integrated drag coefficient formula for estimating the wave attenuation capacity of Rhizophora sp. mangrove forests

Integrating the local knowledge of fishers into an ecological model for the sustainable management of a protected coastal lagoon area in Uruguay

How can governments and fishermen collaborate to participate in a fishing ban for ecological restoration?

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