Using an Atlantis model of the southern Benguela to explore the response of ecosystem indicators for fisheries management

2015 ◽  
Vol 69 ◽  
pp. 23-41 ◽  
Author(s):  
Michael D. Smith ◽  
Elizabeth A. Fulton ◽  
Robert W. Day
Keyword(s):  
Fisheries Management ◽  
Ecosystem Indicators

scholarly journals Indicators as a means of communicating knowledge

2005 ◽  
Vol 62 (3) ◽  
pp. 606-611 ◽  
Author(s):  
Poul Degnbol
Keyword(s):  
Fisheries Management ◽  
Local Ecological Knowledge ◽  
Ecosystem Approach ◽  
Decision Making Process ◽  
Ecological Knowledge ◽  
Translation Process ◽  
Ecosystem Indicators ◽  
Per Se ◽  
Management Institutions ◽  
Shared Understandings

Abstract Indicators represent the link between objectives and action in management. The identification of ecosystem indicators must therefore be embedded in the decision-making process. Fisheries management can only be effective if the measures are considered legitimate by stakeholders. The choice of indicators to guide management should not be evaluated from a technical perspective alone, but also in relation to their effectiveness in communicating knowledge. More specifically, indicators should serve as a communication bridge between different knowledge discourses. Reference is often made to “local ecological knowledge” as a source that should be integrated in the process for management to be legitimate. However, while extensive studies have been made on local ecological knowledge per se, few have addressed the issue of its integration into co-management institutions with research-based knowledge. The challenge is consequently to identify indicators that have both research-based validity and reflect features that correspond to stakeholder knowledge, while relating to shared understandings of objectives and actions. This challenge is discussed from a developing-countries perspective. Problems and possible ways forward are illustrated on the basis of experiences from a range of case studies of knowledge discourses regarding living aquatic resources in southeast Asia and southern Africa. The studies have shown that the different knowledge discourses, and candidate indicators therein, relating to a specific ecosystem may be identified and characterized. Often, however, such indicators will have very little in common across knowledge discourses, and the differences cannot be overcome through a simple translation process. The perspectives of formal research-based knowledge and of fishers differ systemically, reflecting the different interests and scales of observation between the two parties. Also, fishers focus on a wider agenda than research alone, on allocation problems and conflicts among users. Allocation/access issues must therefore be addressed as an integral aspect of an ecosystem approach if management is to be effective.

scholarly journals Applied Fisheries Oceanography: Ecosystem Indicators of Ocean Conditions Inform Fisheries Management in the California Current

Oceanography ◽  
2014 ◽  
Vol 27 (4) ◽  
pp. 80-89 ◽  
Author(s):  
William Peterson ◽  
◽  
Jennifer Fisher ◽  
Jay Peterson ◽  
Cheryl Morgan ◽  
...  
Keyword(s):  
Fisheries Management ◽  
California Current ◽  
Ecosystem Indicators ◽  
Ocean Conditions ◽  
Fisheries Oceanography

scholarly journals Quantitative ecosystem indicators for fisheries management

2005 ◽  
Vol 62 (3) ◽  
pp. 307-310 ◽  
Author(s):  
Philippe M. Cury ◽  
Villy Christensen
Keyword(s):  
Fisheries Management ◽  
Ecosystem Indicators

Role of trophic models and indicators in current marine fisheries management

2015 ◽  
Vol 538 ◽  
pp. 257-272 ◽  
Author(s):  
C Longo ◽  
S Hornborg ◽  
V Bartolino ◽  
MT Tomczak ◽  
L Ciannelli ◽  
...  
Keyword(s):  
Fisheries Management ◽  
Marine Fisheries ◽  
Trophic Models

Fish community and fisheries management of Brno Reservoir following revitalisation measures

2015 ◽  
Vol 64 (2) ◽  
pp. 112-122 ◽  
Author(s):  
Pavel Jurajda ◽  
Zdeněk Adámek ◽  
Zdenka Valová ◽  
Michal Janáč ◽  
Kevin Roche
Keyword(s):  
Fisheries Management ◽  
Fish Community

HISTÓRICO DO COMPRIMENTO TOTAL DE TAMBAQUI (Colossoma macropomum, CHARACIFORMES: CHARACIDAE, CUVIER, 1818) DESEMBARCADO NO MERCADO DE TEFÉ, AMAZONAS, BRASIL, COM NOVE RECOMENDAÇÕES PARA O MANEJO PESQUEIRO DA ESPÉCIE

2008 ◽  
Vol 2 (1) ◽  
pp. 27-34 ◽  
Author(s):  
Jorge Iván Sánchez-Botero ◽  
Danielle Sequeira Garcez ◽  
Wesllen Chaves Cortezão
Keyword(s):  
Sustainable Development ◽  
Standard Deviation ◽  
Environmental Protection ◽  
Fisheries Management ◽  
Historical Data ◽  
Colossoma Macropomum ◽  
Pressure Diffusion ◽  
Significant Difference ◽  
Efficient Mechanisms ◽  
Solimões River

This study evaluates the total length of tambaqui (Colossoma macropomum ) captured in the middle Solimões river and traded during seven years (1993, 1997 and 2000 to 2005) in the Tefé market, Amazon, Brazil. The Mamirauá Institute of Sustainable Development obtained measurements of the total lengths from 42207 individuals. The length average was 45.23 ± 6.29 cm (minim um of 13 cm and maximum of 105.5 cm ) and the mode was 45 cm . From the total tambaquis, 92.86% were smaller than 55 cm and 7.14% measured 58.24 ± 5.41 cm on average. Medium and standard deviation of the lengths recorded in all years showed sizes below the established by the environmental federal agency. The Kruskal Wallis test showed that there is no significant difference between the abundances and medium sizes of the captures during all months of the year. The historical data of the tambaqui fisheries for the middle Solimões region indicate that individuals of this species have been constantly captured at sizes below the minim um length of reproduction. Nine recommendations for tambaquis fisheries management in the region related to more efficient mechanisms of inspection, auto-ecology studies of the species, environmental protection, reduction of fishery pressure, diffusion and educational cam paigns that aim to correct exploitation of this resource are presented in this manuscript.

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