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A Quantitative Metric to Identify Critical Elements within Seafood Supply Networks ArchiMer
Plaganyi, Eva E.; Van Putten, Ingrid; Thebaud, Olivier; Hobday, Alistair; Innes, James; Lim-camacho, Lilly; Norman-lopez, Ana; Bustamante, Rodrigo H.; Farmery, Anna; Fleming, Aysha; Frusher, Stewart; Green, Bridget; Hoshino, Eriko; Jennings, Sarah; Pecl, Gretta; Pascoe, Sean; Schrobback, Peggy; Thomas, Linda.
A theoretical basis is required for comparing key features and critical elements in wild fisheries and aquaculture supply chains under a changing climate. Here we develop a new quantitative metric that is analogous to indices used to analyse food-webs and identify key species. The Supply Chain Index (SCI) identifies critical elements as those elements with large throughput rates, as well as greater connectivity. The sum of the scores for a supply chain provides a single metric that roughly captures both the resilience and connectedness of a supply chain. Standardised scores can facilitate cross-comparisons both under current conditions as well as under a changing climate. Identification of key elements along the supply chain may assist in informing...
Tipo: Text
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00250/36163/34722.pdf
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Ecoviability for ecosystem-based fisheries management ArchiMer
Doyen, Luc; Bene, Christophe; Bertignac, Michel; Blanchard, Fabian; Cisse, Abdoul; Dichmont, Catherine; Gourguet, Sophie; Guyader, Olivier; Hardy, Pierre-yves; Jennings, Sarah; Little, Lorne Richard; Macher, Claire; Mills, David Jonathan; Noussair, Ahmed; Pascoe, Sean; Pereau, Jean-christophe; Sanz, Nicolas; Schwarz, Anne-maree; Smith, Tony; Thebaud, Olivier.
Reconciling food security, economic development and biodiversity conservation is a key challenge, especially in the face of the demographic transition characterizing many countries in the world. Fisheries and marine ecosystems constitute a difficult application of this bio-economic challenge. Many experts and scientists advocate an ecosystem approach to manage marine socio-ecosystems for their sustainability and resilience. However, the ways by which to operationalize ecosystem-based fisheries management (EBFM) remain poorly specified. We propose a specific methodological framework-viability modelling-to do so. We show how viability modelling can be applied using four contrasted case-studies: two small-scale fisheries in South America and Pacific and two...
Tipo: Text Palavras-chave: Biodiversity; Ecological economics; Ecosystem approach; Fisheries; Scenario; Viability.
Ano: 2017 URL: https://archimer.ifremer.fr/doc/00409/52009/52724.pdf
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Information preferences for the evaluation of coastal development impacts on ecosystem services: A multi-criteria assessment in the Australian context ArchiMer
Marre, Jean-baptiste; Pascoe, Sean; Thebaud, Olivier; Jennings, Sarah; Boncoeur, Jean; Coglan, Louisa.
Ecosystem based management requires the integration of various types of assessment indicators. Understanding stakeholders' information preferences is important, in selecting those indicators that best support management and policy. Both the preferences of decision-makers and the general public may matter, in democratic participatory management institutions. This paper presents a multi-criteria analysis aimed at quantifying the relative importance to these groups of economic, ecological and socio-economic indicators usually considered when managing ecosystem services in a coastal development context. The Analytic Hierarchy Process (AHP) is applied within two nationwide surveys in Australia, and preferences of both the general public and decision-makers for...
Tipo: Text Palavras-chave: Analytic hierarchy process; Australia; Coastal development; Ecosystem services assessment; Information preferences; Multi-criteria analysis.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00313/42428/41791.pdf
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Multiple management objectives within a mixed prawn fishery : which win-win-win situations? ArchiMer
Gourguet, Sophie; Thebaud, Olivier; Jennings, Sarah; Little, Rich; Dichmont, Cathy; Pascoe, Sean; Doyen, Luc.
Fisheries management must address multiple, often conflicting objectives in a highly uncertain context. While the bio-economic performance of trawl fisheries faces high levels of biological and economic uncertainty, the impact of trawling on broader biodiversity is also a major concern for their management. The purpose of this study is to propose a model-based framework to formally assess the trade-offs associated with balancing biological, economic and non-target species conservation objectives in a mixed fishery. This framework is applied to the Australian Northern Prawn Fishery (NPF). We apply a stochastic co-viability framework of analysis to a multi-species bio-economic model of the NPF considering multiple management objectives. In particular, we...
Tipo: Text
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00299/41070/40243.pdf
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Of sets of offsets: Cumulative impacts and strategies for compensatory restoration ArchiMer
Thebaud, Olivier; Boschetti, Fabio; Jennings, Sarah; Smith, Anthony D.m.; Pascoe, Sean.
Biodiversity offsets are increasingly advocated as a flexible approach to managing the ecological costs of economic development. Arguably, however, this remains an area where policy-making has run ahead of science. A growing number of studies identify limitations of offsets in achieving ecologically sustainable outcomes, pointing to ethical and implementation issues that may undermine their effectiveness. We develop a novel system dynamic modelling framework to analyze the no net loss objective of development and biodiversity offsets. The modelling framework considers a marine-based example, where resource abundance depends on a habitat that is affected by a sequence of development projects, and biodiversity offsets are understood as habitat restoration...
Tipo: Text Palavras-chave: Biodiversity offsets; Compensatory restoration; Cumulative impacts; Habitat-resource interactions; Bio-economic modelling; Social acceptability.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00270/38156/36312.pdf
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Structured Decision-Making Identifies Effective Strategies and Potential Barriers for Ecosystem-Based Management of a Range-Extending Species in a Global Marine Hotspot ArchiMer
Robinson, Lucy M.; Marzloff, Martin; Van Putten, Ingrid; Pecl, Gretta; Jennings, Sarah; Nicol, Sam; Hobday, Alistair J.; Tracey, Sean; Hartmann, Klaas; Haward, Marcus; Frusher, Stewart.
Climate-driven changes in ocean currents have facilitated the range extension of the long-spined sea urchin (Centrostephanus rodgersii) from Australia's mainland to eastern Tasmania over recent decades. Since its arrival, destructive grazing by the urchin has led to widespread formation of sea urchin 'barrens'. The loss of habitat, biodiversity and productivity for important commercial reef species in conjunction with the development of an urchin fishery has led to conflicting objectives among stakeholders, which poses complex challenges for regional management. Stakeholder representatives and managers were engaged via a participatory workshop and subsequent one-on-one surveys to trial a structured decision-making process to identify effective...
Tipo: Text Palavras-chave: Structured decision-making; Decision analysis; Multi-method elicitation; Stakeholder engagement; Ecosystem-based management; Species range extension; Keystone herbivore; Global marine hotspot.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00590/70226/69512.pdf
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The Cost of Co-viability in the Australian Northern Prawn Fishery ArchiMer
Gourguet, Sophie; Thebaud, Olivier; Jennings, Sarah; Little, L. Richard; Dichmont, Catherine M.; Pascoe, Sean; Deng, Roy A.; Doyen, Luc.
Fisheries management must address multiple, often conflicting objectives in a highly uncertain context. In particular, while the bio-economic performance of trawl fisheries is subject to high levels of biological and economic uncertainty, the impact of trawling on broader biodiversity is also a major concern for their management. The purpose of this study is to propose an analytical framework to formally assess the trade-offs associated with balancing biological, economic and non-target species conservation objectives. We use the Australian Northern Prawn Fishery (NPF), which is one of the most valuable federally managed commercial fisheries in Australia, as a case study. We develop a stochastic co-viability assessment of the fishery under multiple...
Tipo: Text Palavras-chave: Bio-economic modeling; Co-viability cost; Conflicting management objectives; Trawling impacts; Uncertainty; Northern prawn fishery.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00300/41073/40295.pdf
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The use of ecosystem services valuation in Australian coastal zone management ArchiMer
Marre, Jean-baptiste; Thebaud, Olivier; Pascoe, Sean; Jennings, Sarah; Boncoeur, Jean; Coglan, Louisa.
The use and influence of ecosystem services valuation in management decision-making, particularly as it relates to coastal zone management, remains largely unexplored in the academic literature. A recent Australia-wide survey of decision-makers involved in coastal zone management examined if, how and to what extent economic valuation of coastal and marine ecosystem services is used in, and influences, decision-making in Australia. The survey also identified a set of cases where economic valuation of ecosystem services was used for decision-making, and reasons why economic values may or may not be considered in the decision-making process. This paper details the method and results from this survey. Overall, there is strong empirical evidence that economic...
Tipo: Text Palavras-chave: Coastal zone management; Decision-making; Ecosystem services; Economic valuation.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00257/36812/42022.pdf
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