scholarly journals Integrating science and citizen science: the dusky grouper (Epinephelus marginatus) sustainable fishery of Copacabana, Rio de Janeiro, Brazil

2019 ◽  
Author(s):  
Alpina Begossi ◽  
Svetlana V. Salivonchyk
Keyword(s):  
Citizen Science ◽  
Rio De Janeiro ◽  
Local Ecological Knowledge ◽  
Management Training ◽  
Small Scale ◽  
Ecological Knowledge ◽  
Small Scale Fisheries ◽  
Significant Difference ◽  
Dusky Grouper ◽  
Sustainable Fishery

AbstractWe followed landings of dusky grouper, Epinephelus marginatus, from 2013 to 2019. We observed 1,896 individuals of dusky grouper, Epinephelus marginatus, in Copacabana, Rio de Janeiro, from September 2013 to February 2019. The total weight of the catches was 6,065.57 kg, with an average of 1,442.50 kg/year and a std of 147.30 kg.We integrated fishers in our study through citizen science (CS): individuals were trained to monitor grouper gonads and supplied information on fishing spots and prices. After comparing catch curves (based on weight) and curve prices (in the Brazilian monetary currency of reals), our results showed that catches in the Copacabana fishery have been stable (the results of the Kruskal-Wallis test showed no significant difference for either the weight of the catches or the average prices of dusky groupers in the years compared). Copacabana has been a sustainable fishery when considering its catches of dusky grouper. This is a very important result for conservation and management, considering the importance of small-scale fisheries in terms of their low fishing efforts and their possible effects on vulnerable species, as well as their ecological and economic importance in developing countries. Citizen science, alomng with local ecological knowledge, helps integrate research and fisheries as well as researchers and fishers and allows for larger sampling efforts and management training for fishers.

scholarly journals Fishers and groupers (Epinephelus marginatus and E. morio) in the coast of Brazil: integrating information for conservation

2019 ◽  
Vol 15 (1) ◽  
Author(s):  
Alpina Begossi ◽  
Svetlana Salyvonchyk ◽  
Branko Glamuzina ◽  
Shirley Pacheco de Souza ◽  
Priscila F. M. Lopes ◽  
...  
Keyword(s):  
Local Knowledge ◽  
Rio De Janeiro ◽  
Local Ecological Knowledge ◽  
Sao Paulo ◽  
Northeastern Brazil ◽  
Small Scale ◽  
Ecological Knowledge ◽  
São Paulo ◽  
Red Grouper ◽  
Dusky Grouper

Abstract Background Groupers are a vulnerable but economically important group of fish, especially for small-scale fisheries. We investigated catches and local ecological knowledge (LEK) of diet, habitat, and past fishing experiences. Methods Landings, prices, interviews, and restaurants demand for two species, Epinephelus marginatus (dusky grouper) and Epinephelus morio (red grouper), were registered. Results We visited 74 markets and 79 sites on the coast of Brazil in 2017–2018, and we interviewed 71 fishers: Bahia (NE), Rio de Janeiro and São Paulo (SE), and Santa Catarina (S). The landings sampled of dusky grouper (2016–2017) in Rio de Janeiro were: n = 222, size 38–109 cm, weight 1–24 kg, average 3.84 kg; in São Paulo, São Sebastião were: n = 47, size 39–106 cm, weight 2–8 kg, average of 2.77 kg; and at Santos: n = 80, 26–120 cm, weight 0.36–15 kg, average 2.72 kg. Red grouper was observed in markets in the northeastern Brazil. We did not observe Epinephelus marginatus from Bahia northward; a maximum size of 200 cm was reported south of the Bahia, besides Rio de Janeiro and São Paulo coasts, 20 years ago (or longer) by 12 fishers. Local knowledge of fishers was important for grouper data of habitat and diet; the reproduction period was identified by fishers as September to March. Conclusions Groupers can be considered as a cultural and ecological keystone species. We suggest protective measures: 1) fishing zoning, 2) islands (MPAs) with the surveillance of fishers, 3) late Spring and early Summer as key periods for management (grouper reproduction), 4) studies on grouper larvae, 5) mapping of fishing spots, 6) studies on local knowledge. Collaboration with small-scale fishers and local knowledge could contribute to low-conflict management measures. In that regard, integrative models of management from Latin America, by using local knowledge and citizen science, could produce successful grouper management for Brazilian data-poor fisheries, a contrasting reality to the Mediterranean areas. Finally, the distribution of E. marginatus in Brazil leave us with questions: a) Have dusky groupers disappeared from Bahia because of a decline in the population? b) Was it uncommon in Northeast Brazil? c) Did changes in water temperatures forced a movement southward?

scholarly journals A Framework for Simulating Ecosystem Effects in Data-Poor Small-Scale Fisheries Using Science-Based and Local Ecological Knowledge-Based Models

2022 ◽  
Vol 8 ◽  
Author(s):  
Manuel J. Zetina-Rejón ◽  
Gladis A. López-Ibarra ◽  
Lorena Rocha-Tejeda ◽  
Alesa Flores-Guzmán ◽  
Inés López-Ercilla ◽  
...  
Keyword(s):  
Local Ecological Knowledge ◽  
Management Strategies ◽  
Ecological Indicators ◽  
Marine Ecosystems ◽  
Small Scale ◽  
Ecological Knowledge ◽  
Quantitative Models ◽  
Small Scale Fisheries ◽  
Qualitative Models ◽  
Species Removal

The constant demand for seafood products and the undeniable effects of fishing on marine ecosystems make it urgent to implement an ecosystem approach, even in data-poor scenarios such as small-scale fisheries. Understanding the impacts of fishing is essential for promoting management strategies that prevent irreversible damage to marine ecosystems. Thus, ecosystem quantitative science-based models have been frequently used to evaluate the effects of fishing, although fishers’ local ecological knowledge (LEK) can aid the implementation of qualitative models, particularly in data-poor conditions. Here, we present a framework for simulating and assessing the effects of fishing following two strategies: (1) for both types of models, we simulated species removal scenarios, and (2) for quantitative science-based models, we fitted time series to dynamically assessed impacts. The impacts were analyzed through ecological indicators commonly used for quantitative models, and because these indicators cannot be easily estimated for qualitative models, we propose the use of topological indicators in both types of models. The approach was applied to three case studies of small-scale finfish fisheries in northwestern Mexico. We found that the ecosystem response to species removal was different in each case study and that the target species can play an important role in ecosystems, but their removal does not generate abrupt changes in the ecosystem structure. The quantitative science-based models were able to reproduce the historical catch trends, which allowed us to reveal that changes in ecosystems are indeed influenced by fishing effort but also by underlying primary productivity. Furthermore, topological and ecological indicators showed similar trends in the quantitative models, which suggests that the former could be useful when data-poor conditions allow only qualitative models. This result confirms the relevance of the participation of fishers in generating qualitative models and their decisive role in the discussion of co-management strategies and risk scenarios in a better-informed manner.

Using local ecological knowledge of Fishers to infer the impact of climate variability in Galápagos’ small-scale fisheries

Marine Policy ◽  
2020 ◽  
Vol 121 ◽  
pp. 104195
Author(s):  
Leticia Maria Cavole ◽  
Solange Andrade-Vera ◽  
José R. Marin Jarrin ◽  
Daniela Faggiani Dias ◽  
Octavio Aburto-Oropeza ◽  
...  
Keyword(s):  
Climate Variability ◽  
Local Ecological Knowledge ◽  
Small Scale ◽  
Ecological Knowledge ◽  
Small Scale Fisheries ◽  
The Impact

scholarly journals The Endangered Coastal Fishers along the Coast of the Archipelago Sea

2019 ◽  
Vol 46 ◽  
pp. 5-35
Author(s):  
Kirsi Sonck-Rautio
Keyword(s):  
Political Ecology ◽  
Fisheries Management ◽  
Local Ecological Knowledge ◽  
Ethnographic Study ◽  
Small Scale ◽  
Great Cormorant ◽  
Ecological Knowledge ◽  
Small Scale Fisheries ◽  
Current State ◽  
Fishing Sector

The small-scale fisheries of the Finnish archipelago are in crisis. Three major problems were identified during an ethnographic study of the different stake- holders in the fishing sector: the grey seal, the great cormorant, and regulation of pikeperch harvesting. Within the framework of political ecology, develop- ments in the current state of the fisheries are examined and the policy-mak- ing processes are analysed. Additionally, the notion of knowledge and the role of both scientific knowledge and local ecological knowledge in the context of fisheries management and fisheries management science are discussed.

scholarly journals Marine protected area and the spatial distribution of the gill net fishery in Copacabana, Rio de Janeiro, RJ, Brazil

2016 ◽  
Vol 76 (1) ◽  
pp. 1-9 ◽  
Author(s):  
R. B. Amorim ◽  
C. Monteiro-Neto
Keyword(s):  
Protected Area ◽  
Rio De Janeiro ◽  
Marine Protected Area ◽  
Local Ecological Knowledge ◽  
Ecological Knowledge ◽  
Target Species ◽  
Fisheries Resources ◽  
Gill Net ◽  
Fishing Gears ◽  
Management Plans

Abstract This study characterizes the gill net fishery at Colônia de Pescadores Z13 (CPZ13), in Copacabana, Rio de Janeiro, and its relationship with the marine protected area ‘Monumento Natural do Arquipélago das Ilhas Cagarras – MoNa Cagarras’, describing the fleet and fishing gears, identifying fishing spots, species and their associations by gillnet type. From June 2012 to May 2013, every Tuesday to Sunday, gill net landings were monitored and fishers interviewed regarding their catch. Small boats (dory whaleboats) are used to set three types of gillnets: “Corvineira” (target species – whitemouth croaker), “linguadeira” (target species – flounders) and “rede-alta” (target species – bluefish). Fifty-nine species within 37 families were captured at 14 fishing spots, showing association with bottom type and distance from shore. The use of fisher’s local ecological knowledge defines gear placement at specific sites targeting fisheries resources. All fishing sites are not within the limits of MoNa Cagarras but would benefit from management plans including an MPA buffering zone.

scholarly journals STRATEGI PENINGKATAN PRODUKTIVITAS PERIKANAN SKALA KECIL BERKELANJUTAN DI KABUPATEN ACEH BARAT PROVINSI ACEH

2019 ◽  
Vol 6 (1) ◽  
pp. 1
Author(s):  
Teuku Amarullah ◽  
Mohamad Gazali
Keyword(s):  
Data Analysis ◽  
Fisheries Management ◽  
Financial Management ◽  
Swot Analysis ◽  
Management Training ◽  
Small Scale ◽  
Productivity Improvement ◽  
Small Scale Fisheries ◽  
Aceh Province ◽  
Data Analysis Methods

The strategy of productivity improvement of sustanable small-scale capture fisheries in West Aceh, Aceh Province was urgent for fisheries management. This research have been conducted for three months to begin from May until  July 2018. The aims of this study is to determine factors that affected Productivity improvment of sustanable small-scale capture fisheries and to develop strategies for improving productivity of sustanable small-scale capture fisheries in Aceh Barat, Aceh Province. The method used is a survey and study of literature. In addition to use a method of interview to social respondents. Data analysis methods are linear regression, descriptive and SWOT analysis. Results showed factors affected productivity of sustanable small-scale capture fisheries in Aceh Barat is capital, number of labour and the kinds of cpture boat.  While other factors such as the trip, age and level of college are  no effect. The strategy of increasing the productivity of sustanable small-scale fisheries in improving economy of fishermen in Aceh Barat district that can be applied: give subsidy, catching fleet and fishing and fishing equipment, financial management training, and financial institusional to provide alternative working for small-scale fisheries

scholarly journals Income evaluation of small - scale fishers in two brazilian urban reservoirs: Represa Billings (SP) and Lago Paranoá (DF)

2006 ◽  
Vol 66 (3) ◽  
pp. 817-828 ◽  
Author(s):  
M. Petrere Jr. ◽  
T. Walter ◽  
C. V. Minte-Vera
Keyword(s):  
Fish Fauna ◽  
Sao Paulo ◽  
Capital City ◽  
Metropolitan Region ◽  
Native Fish ◽  
Small Scale ◽  
São Paulo ◽  
Small Scale Fisheries ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Significant Difference

The income of small-scale fisheries of two urban reservoirs in Brazil: Represa Billings (127 km²) located in the metropolitan region of São Paulo, the capital city of the state of São Paulo and Lago Paranoá (38 km²) located in Brasília (DF), the capital city of Brazil were calculated and compared. Both fisheries are mainly based on the alien Nile tilapia Oreochromis niloticus (more than 80% of the total catch). Although these reservoirs are nearly 900 km apart, their native fish fauna belong to the Upper Paraná Province. The Represa Billings fishers have, on average, a daily profit of R$ 15.8 (U$ 8.4 mostly employing gill nets) and Lago Paranoá fishers R$ 46.6 (U$ 24.9, mostly employing cast nets), which is a statistically significant difference (P < 0.001). The profit of the fisheries is explained by the factor "reservoir" and covariate "days of fishing". Due to the increasing violence in the metropolitan region of São Paulo, the Represa Billings fishery is vanishing.

scholarly journals FISHERMEN ECOLOGICAL KNOWLEDGE AND COMPLEX ADAPTIVE SYSTEMS: AN INTERPRETATIVE MODEL FOR SMALL-SCALE FISHERIES

2019 ◽  
Vol 22 ◽  
Author(s):  
Luciana Loto ◽  
Ronaldo Lobão ◽  
Edson Pereira Silva ◽  
Cassiano Monteiro-Neto
Keyword(s):  
Complex Adaptive Systems ◽  
Adaptive Systems ◽  
Marine Biology ◽  
Complex Adaptive System ◽  
Small Scale ◽  
Ecological Knowledge ◽  
Small Scale Fisheries ◽  
Complex Adaptive ◽  
Definition Of ◽  
Interpretative Model

Abstract The fishermen ecological knowledge (FEK) encompasses information on biology of species and climatic and oceanographic changes, all related with schools of fish and its capture. It incorporates a complex set of codes and signs, which are constantly updated and transmitted orally thorough generations. In this sense, FEK presents characteristics such as diversity and ability to learn from experience, which are in conformity with the definition of a complex adaptive system (CAS). Based on this assumption, this work proposes to structure and interpret FEK as a CAS. It is supported that such approach can promote the exchange of information among areas, which are other way considered incommensurable (anthropology, oceanography, marine biology, meteorology etc.), and also among formal sciences and the FEK. However, CAS is a structure designed with heuristic goals associated with mathematical modeling what is beyond the aims of this work, which uses CAS only as a structuring metaphor.

scholarly journals Aspectos etnoecológicos e implicações para a conservação de Tursiops truncatus (Cetartiodactyla: Delphinidae) no Arquipélago das Cagarras, Rio de Janeiro, Brasil

2013 ◽  
Vol 13 ◽  
Author(s):  
Liliane Lodi ◽  
Camilah Antunes Zappes ◽  
Álvaro Samuel Guimarães dos Santos
Keyword(s):  
Tursiops Truncatus ◽  
Rio De Janeiro ◽  
Anthropogenic Impacts ◽  
Participant Observation ◽  
Bottlenose Dolphins ◽  
Morphological Characteristics ◽  
Small Scale ◽  
Common Bottlenose Dolphin ◽  
Significant Difference ◽  
The Common

The objectives of this study were to understand the ecological aspects of the common bottlenose dolphin (Tursiops truncatus) in the Cagarras Archipelago, Rio de Janeiro, Brazil, and possible anthropogenic impacts by comparing the knowledge of local small-scale fishermen (GA) and the regulars in the archipelago (GB). The data obtained were compared with those available in the literature to propose strategies for monitoring and preservation. Between August and December 2010, we applied the methods of participant observation, interviews-questionnaires and use of illustrative posters. Sixty-one interviews were conducted, from which 83.6% were selected by considering correct answers about the identification of the species on posters (morphological characteristics) and description of time of occurrence in the archipelago (July to December) as reported for the species in the literature. Regarding the seven questions analyzed statistically, a significant difference was found between the accounts of the two groups with respect to anthropic threats to T. truncatus. Gill-nets and the decrease of fishing resources were the main causes identified by the GA group whereas the GB group pointed to the disorganized use of space, pollution and predatory fishing as the factors that have threatened the common bottlenose dolphins. The use of ethnobiological data in conservation programs brings opportunities for the collaboration and participation of the community that is directly inserted into the ecosystem as well as a chance for locals to get involved in issues concerning the sustainability of the archipelago.

scholarly journals The shifting distribution of Mediterranean fishes: a spatio-temporal assessment based on Local Ecological Knowledge .

2019 ◽  
Author(s):  
Ernesto Azzurro ◽  
Valerio Sbragaglia ◽  
Jacopo Cerri ◽  
Michel Bariche ◽  
Luca Bolognini ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Temporal Dynamics ◽  
Local Ecological Knowledge ◽  
Rapid Change ◽  
Species Abundance ◽  
Global Ocean ◽  
Small Scale ◽  
Ecological Knowledge ◽  
The Mediterranean ◽  
Spatio Temporal

A major problem worldwide is the rapid change in species abundance and distribution, which is rapidly restructuring the biological communities of many ecosystems under changing climates. Tracking these transformations in the marine environment is crucial but our understanding is often hampered by the absence of historical data and by the practical challenge of survey large geographical areas. Here we focus on the Mediterranean Sea, a region which is warming faster than the rest of the global ocean, tracing back the spatio-temporal dynamic of species, which are emerging the most in terms of increasing abundances and expanding distributions. To this aim, we accessed the Local Ecological Knowledge (LEK) of small-scale and recreational fishers reconstructing the dynamics of fish perceived as ‘new’ or increasing in different fishing area. Over 500 fishers across 95 locations and 9 different countries were interviewed and semi-quantitative information on yearly changes in species abundance was collected. Overall, 75 species were mentioned by the respondents, being the most frequent citations related to warm-adapted species of both, native and exotic origin. Respondents belonging to the same biogeographic sectors described coherent spatio-temporal dynamics, and gradients along latitudinal and longitudinal axes were revealed. This information provides a more complete understanding of recent bio-geographical changes in the Mediterranean Sea and it also demonstrates that adequately structured LEK methodology might be applied successfully beyond the local scale, across national borders and jurisdictions. Acknowledging this potential through macro-regional coordination, could pave the ground for future large-scale aggregations of individual observations, increasing our potential for integrated monitoring and conservation planning at the regional or even global level.

Sign in / Sign up

Export Citation Format

Share Document