Mobility in the mangroves: Catch rates, daily decisions, and dynamics of artisanal fishing in a coastal commons

Beitl, Christine M.

doi:10.1016/j.apgeog.2014.12.008

Cited by 25 publications

(14 citation statements)

References 68 publications

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“…; Johnson et al . ; Beitl , ; Lynham ). Moreover, large‐scale commercial pelagic fishing fleets, targeting mobile and sparse (high exploration difficulty and low exploitation potential) pelagic species such as tuna and billfish with trawls or long‐lines, showed high degrees of collective searching (Mangel & Clark ; Dreyfus‐Leon & Kleiber ; Curtis & McConnell ; Gaertner & Dreyfus‐Leon ; Dreyfus‐Leon & Gaertner ; Girardin et al .…”

Section: Resultsmentioning

confidence: 99%

“…Other mixed strategy cases can be better explained through mechanisms unaccounted for in our framework. In some SES cases the ability to defend a territory or search collectively related to membership in an exclusive group requiring strong social ties (Gatewood ; Carpenter & Seki ; Beitl , ) or to a historical separation of communities (Krause & Ramos ), stressing the relevance of social norms, social and personal capital, social identity, the need for repeated interactions and path dependencies of property rights. Additionally, mixed strategies may be the result of different top‐down governmental controls emerging from development of a fishery under different political systems (e.g.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

How ecology shapes exploitation: a framework to predict the behavioural response of human and animal foragers along exploration–exploitation trade‐offs

et al. 2018

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Understanding how humans and other animals behave in response to changes in their environments is vital for predicting population dynamics and the trajectory of coupled social-ecological systems. Here, we present a novel framework for identifying emergent social behaviours in foragers (including humans engaged in fishing or hunting) in predator-prey contexts based on the exploration difficulty and exploitation potential of a renewable natural resource. A qualitative framework is introduced that predicts when foragers should behave territorially, search collectively, act independently or switch among these states. To validate it, we derived quantitative predictions from two models of different structure: a generic mathematical model, and a lattice-based evolutionary model emphasising exploitation and exclusion costs. These models independently identified that the exploration difficulty and exploitation potential of the natural resource controls the social behaviour of resource exploiters. Our theoretical predictions were finally compared to a diverse set of empirical cases focusing on fisheries and aquatic organisms across a range of taxa, substantiating the framework's predictions. Understanding social behaviour for given social-ecological characteristics has important implications, particularly for the design of governance structures and regulations to move exploited systems, such as fisheries, towards sustainability. Our framework provides concrete steps in this direction.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

How ecology shapes exploitation: a framework to predict the behavioural response of human and animal foragers along exploration–exploitation trade‐offs

et al. 2018

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“…For marine areas, for which most SCP software was developed, this tends not to be a problem (Abecasis, Afonso & Erzini, 2015). Studies from Ecuador (Beitl, 2015), Malaysia (Teh, Teh & Meitner, 2012), and Brazil (Begossi, 2006) found that marine fishers' spatial behaviours are mostly based on a stable routine. In the case of floodplain socioecological systems, however, this is challenging (Abell et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

Systematic conservation planning in floodplain fisheries: To what extent are fishers’ needs captured in prioritisation models?

Chiaravalloti

2017

Fisheries Management Eco

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Systematic conservation planning (SCP) is a promising tool underpinned by the idea that multistakeholders’ needs should be considered in any conservation action. However, there is almost no research verifying whether those proposed solutions indeed capture local people's needs. In this article, a SCP exercise was developed in the Pantanal wetland, Brazil, to propose a possible new negotiated solution for environmental protection areas and fisheries zone. To test the validity of the SCP‐delivered solutions, physical maps showing them were presented and discussed with local people. None of the proposed possible SCP scenarios was accepted locally as workable. The fixed solutions proposed by SCP do not map onto the spatial–temporal flexibility of floodplain fisheries. Current, SCP approaches seem far from being able to incorporate the livelihood uncertainties of floodplain fisheries into mathematical models in a way that encompasses people's needs and, therefore remains only a theoretical tool for sustainability.

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“…These concessions specify the community's rights to use the mangrove ecosystem for artisanal fishery. In communities where the concessions have been implemented, local associations of fishermen have privileged access for fishing within the boundaries of their area (Beitl, 2015).…”

Section: Introductionmentioning

confidence: 99%

An Overview of Cadmium, Chromium, and Lead Content in Bivalves Consumed by the Community of Santa Rosa Island (Ecuador) and Its Health Risk Assessment

Romero-Estévez

Yánez-Jácome

Langdon

et al. 2020

Front. Environ. Sci.

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Santa Rosa Island community members derive their income and livelihoods from bioaquatic resources, principally bivalves of the genus Anadara, both for subsistence use and commercial purposes. Bivalve mollusks have a sedentary lifestyle and feed by filtering water, meaning they absorb all surrounding substances, including harmful elements like toxic metals. This study aimed to analyze different-sized samples of Anadara tuberculosa and Anadara similis, sediment, and Rhizophora mangle leaves to determine their total amount of cadmium, lead, and chromium as a first approach to the evaluation of the health risk related to the consumption of bivalves. For both species from four sampling sites, the results revealed metal concentrations in the bivalves between 0.211 and 0.948 mg kg −1 , 0.038, and 0.730 mg kg −1 , and 0.067 and 0.923 mg•kg −1 for Cd, Cr, and Pb, respectively. The calculated potential risk (>1) for cadmium, considering all body weights, showed a high health risk for consumers. In the case of lead, the results showed a high health risk in children. There was no risk found for chromium. For sediments, the mean values were 2.14, 29.99, and 12.37 mg•kg −1 and for the Rhizophora mangle leaves were 2.23, 4.22, and 3.35 mg•kg −1 for Cd, Cr, and Pb, respectively. These results did not show a relation with the metal content in bivalves.

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Mobility in the mangroves: Catch rates, daily decisions, and dynamics of artisanal fishing in a coastal commons

Cited by 25 publications

References 68 publications

How ecology shapes exploitation: a framework to predict the behavioural response of human and animal foragers along exploration–exploitation trade‐offs

How ecology shapes exploitation: a framework to predict the behavioural response of human and animal foragers along exploration–exploitation trade‐offs

Systematic conservation planning in floodplain fisheries: To what extent are fishers’ needs captured in prioritisation models?

An Overview of Cadmium, Chromium, and Lead Content in Bivalves Consumed by the Community of Santa Rosa Island (Ecuador) and Its Health Risk Assessment

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