scholarly journals Four years on the track of Callinectes sapidus (Rathbun, 1986): reconstructing the invasion of the Iberian Peninsula using social networks sites and citizen science.

2021 ◽  
Author(s):  
David Izquierdo Gomez
Keyword(s):  
Iberian Peninsula ◽  
Citizen Science ◽  
Callinectes Sapidus ◽  
Local Ecological Knowledge ◽  
Scientific Information ◽  
Alien Invasive Species ◽  
Ecological Knowledge ◽  
Western Basin ◽  
Portunid Crab ◽  
Spatio Temporal

Abstract Callinectes sapidus (Rathbun, 1896) is one of the 100 worst alien invasive species in the Mediterranean Sea, first reported in Venice in 1949. Firstly, the portunid crab colonized the Northern Levantine basin, and half a century later the species spreads rapidly in the Western basin. The general use of social network sites and smart phones have derived in the bloom of citizen science, which enlists the general public in gathering scientific information across large spatio-temporal scales. This research, describes the use of citizen science to unveil the colonization of C. sapidus in the Iberian Peninsula, using the Local Ecological Knowledge of recreational fishermen. Overall, C. sapidus has been detected in more than 300 locations, including a number of Natura2000 areas and 18 rivers. Eventually, recreational fishermen perceived the presence of the portunid crab as detrimental for the ecosystem.

Contribution of local fishermen to improving knowledge of the marine ecosystem and resources in the Republic of Guinea, West Africa

2011 ◽  
Vol 68 (8) ◽  
pp. 1454-1469 ◽  
Author(s):  
Jean Le Fur ◽  
Athanase Guilavogui ◽  
Antoine Teitelbaum
Keyword(s):  
Local Ecological Knowledge ◽  
Marine Ecosystem ◽  
Scientific Information ◽  
Published Data ◽  
Ecological Knowledge ◽  
Fish Diet ◽  
Republic Of Guinea ◽  
Substrate Preferences ◽  
Trophic Network ◽  
The Republic

We assessed the quality of fishermen’s local ecological knowledge, or LEK, as a potential source of information about coastal ecosystem functioning in the Republic of Guinea. Interviews were conducted by means of partial immersion or repeated surveys at six landing sites. In each site and for each topic, discussions were conducted with 3 to 15 individual fishermen and 1 to 10 groups of fishermen. Knowledge was obtained about habitats, substrate preferences, the location of nurseries, reproductive cycles, fish diet, and the trophic network of the Sciaenid community, the major resource for fisheries in this area. We systematically compared the reliability of the information collected with that of scientific information collected in parallel surveys or published data. The contribution of LEK should be considered on a case-by-case basis. Indeed, LEK could be used as (i) a supplementary source of scientific studies (seabed description), (ii) a basis for new scientific investigation (species reproductive cycle), (iii) the only possibility to obtain information (nursery location), (iv) a surrogate to scientific surveys providing an identical level of validity (fish diets) or a satisfactory proxy (trophic network) in a context of limited resources and data in which wide-ranging knowledge relating to the entire coast must be obtained.

The role of local ecological knowledge for the conservation and sustainable fisheries of the sea lamprey (Petromyzon marinus Linnaeus, 1758) in the Iberian Peninsula

2020 ◽  
Vol 198 ◽  
pp. 105345
Author(s):  
Heitor Oliveira Braga ◽  
Mário Jorge Pereira ◽  
Joelson Musiello-Fernandes ◽  
Fernando Morgado ◽  
Amadeu M.V.M. Soares ◽  
...  
Keyword(s):  
Iberian Peninsula ◽  
Local Ecological Knowledge ◽  
Petromyzon Marinus ◽  
Sea Lamprey ◽  
Ecological Knowledge ◽  
Sustainable Fisheries

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.

scholarly journals Predicting species distribution from fishers’ local ecological knowledge: a new alternative for data-poor management

2019 ◽  
Vol 76 (8) ◽  
pp. 1423-1431 ◽  
Author(s):  
Priscila F.M. Lopes ◽  
Júlia T. Verba ◽  
Alpina Begossi ◽  
Maria Grazia Pennino
Keyword(s):  
Local Ecological Knowledge ◽  
Scientific Information ◽  
Spatial Models ◽  
Marine Spatial Planning ◽  
Ecological Knowledge ◽  
Species Occurrence ◽  
Southwest Atlantic ◽  
Bayesian Hierarchical ◽  
Dusky Grouper ◽  
Hierarchical Spatial Models

Many developing countries lack information to manage their endangered species, urging the need for affordable and reliable information. We used Bayesian hierarchical spatial models, with oceanographic variables, to predict the distribution range of Epinephelus marginatus, the dusky grouper, for the entire Southwest Atlantic. We ran a model using scientific information gathered from the literature and another using information gathered from fishers on species presence or absence. In both models, temperature was an important determinant of species occurrence. The predicted occurrence of the dusky grouper overlapped widely (Schoener’s D = 0.71; Warren’s I = 0.91) between the models, despite small differences on the southern and northern extremes of the distribution. These results suggest that basic information provided by fishers on species occurrence in their area can be reliable enough to predict species occurrence over large scales and can be potentially useful for marine spatial planning. Fishers’ knowledge may be an even more viable alternative to data collection than what was previously thought, for countries that both struggle with financial limitations and have urgent conservation needs.

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 Enhancing Diversity Knowledge through Marine Citizen Science and Social Platforms: The Case of Hermodice carunculata (Annelida, Polychaeta)

Diversity ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 311
Author(s):  
Maja Krželj ◽  
Carlo Cerrano ◽  
Cristina Di Camillo
Keyword(s):  
Citizen Science ◽  
Scientific Information ◽  
Marine Species ◽  
Predatory Behavior ◽  
Ecological Knowledge ◽  
Ecological Data ◽  
Online Newspapers ◽  
Hermodice Carunculata ◽  
Southern Mediterranean ◽  
Citizen Science Project

The aim of this research is to set a successful strategy for engaging citizen marine scientists and to obtain reliable data on marine species. The case study of this work is the bearded fireworm Hermodice carunculata, a charismatic species spreading from the southern Mediterranean probably in relation to global warming. To achieve research objectives, some emerging technologies (mainly social platforms) were combined with web ecological knowledge (i.e., data, pictures and videos about the target species published on the WWW for non-scientific purposes) and questionnaires, in order to invite people to collect ecological data on the amphinomid worm from the Adriatic Sea and to interact with involved people. In order to address future fruitful citizen science campaigns, strengths and weakness of each used method were illustrated; for example, the importance of informing and thanking involved people by customizing interactions with citizens was highlighted. Moreover, a decisive boost in people engagement may be obtained through sharing the information about citizen science project in online newspapers. Finally, the work provides novel scientific information on the polychete’s distribution, the northernmost occurrence record of H. carunculata in the Mediterranean Sea and new insights on predatory behavior on other living benthic species.

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