Models for an Ecosystem Approach to Fisheries

This document is one outcome from a workshop held in Gizo in October 2010 attended by 82 representatives from government, NGO's private sector, and communities. The target audience for the document is primarily organizations planning to work with coastal communities of Solomon Islands to implement Community-Based Resource Management (CBRM). It is however also envisaged that the document will serve as a reference for communities to better understand what to expect from their partners and also for donors, to be informed about agreed approaches amongst Solomon Islands stakeholders. This document does not attempt to summarize all the outcomes of the workshop; rather it focuses on the Solomon Islands Coral Triangle Initiative (CTI) National Plan of Action (NPoA): Theme 1: Support and implementation of CBRM and specifically, the scaling up of CBRM in Solomon Islands. Most of the principles given in this document are derived from experiences in coastal communities and ecosystems as, until relatively recently, these have received most attention in Solomon Islands resource management. It is recognized however that the majority of these principles will be applicable to both coastal and terrestrial initiatives. This document synthesizes information provided by stakeholders at the October 2010 workshop and covers some basic principles of engagement and implementation that have been learned over more than twenty years of activities by the stakeholder partners in Solomon Islands. The document updates and expands on a summary of guiding principles for CBRM which was originally prepared by the Solomon Islands Locally Managed Marine Area Network (SILMMA) in 2007

INTEGRATED ASSESSMENT MODELLING

integrated assessment

An acoustic view of ocean mixing

Knowledge of the parameter K (turbulent diffusivity/"mixing intensity") is a key to understand transport processes of matter and energy in the ocean. Especially the almost vertical component of K across the ocean stratification (diapycnal diffusivity) is vital for research on biogeochemical cycles or greenhouse gas budgets. Recent boost in precision of water velocity data that can be obtained from vessel-mounted acoustic instruments (vmADCP) allows identifying ocean regions of elevated diapycnal diffusivity during research cruises - in high horizontal resolution and without extra ship time needed. This contribution relates acoustic data from two cruises in the Tropical North East Atlantic Oxygen Minimum Zone to simultaneous field observations of diapycnal diffusivity: pointwise measurements by a microstructure profiler as well as one integrative value from a large scale Tracer Release Experiment

Nature like setting. Cultural ecosystem services and disservices of French urban green spaces

International audienceSociety has a growing interest for urban nature. The decision-makers have to take this concern into account but they need to know the fallouts of nature for their municipalities, their citizens and the tourists. It was the purpose of our research programs, which were funded by the French region Centre-Val de Loire. How urban nature is perceived by users? What kind of nature is more appreciated? How explain the increasing interest for urban nature? What users research in green spaces? The study was conducted in six green spaces, which belong to different categories (forest and semi-natural, ornamental and allotment gardens) and are located in the six main cities of the region Centre-Val de Loire. 321 users were interviewed from a semi-supervised manner. To complete this study, 12 green spaces managers (elected representatives, heads and technicians) were questioned on the representation of nature by urban-dwellers. To put the results into perspective, we also analyzed tourists’ point of view in the Center Parcs site, which is located in the same region and can be assimilated to urban space, with its cottages, facilities and shops. Here, the study considered an innovative method, basing on 2.118 comments posted by customers on a sharing website (TripAdvisor). The first conclusion is that nature is unanimously appreciated and sought-after, according to the accounts of green spaces users as well as Net surfers. But the green spaces managers moderate this idea. City-dwellers complain to them about nature: it has also disservices (pollen, weeds). If we analyze further the point of view of green spaces users, considering the perspective offered by Center Parcs customers, we can observe that French citizen appreciated only one kind of nature, the managed one. Moreover, this nature appears only like a setting. Indeed, users come first in nature spaces for peace and quiet, before coming for the closeness with nature

How models can support ecosystem-based management of coral reefs

Despite the importance of coral reef ecosystems to the social and economic welfare of coastal communities, the condition of these marine ecosystems have generally degraded over the past decades. With an increased knowledge of coral reef ecosystem processes and a rise in computer power, dynamic models are useful tools in assessing the synergistic effects of local and global stressors on ecosystem functions. We review representative approaches for dynamically modeling coral reef ecosystems and categorize them as minimal, intermediate and complex models. The categorization was based on the leading principle for model development and their level of realism and process detail. This review aims to improve the knowledge of concurrent approaches in coral reef ecosystem modeling and highlights the importance of choosing an appropriate approach based on the type of question(s) to be answered. We contend that minimal and intermediate models are generally valuable tools to assess the response of key states to main stressors and, hence, contribute to understanding ecological surprises. As has been shown in freshwater resources management, insight into these conceptual relations profoundly influences how natural resource managers perceive their systems and how they manage ecosystem recovery. We argue that adaptive resource management requires integrated thinking and decision support, which demands a diversity of modeling approaches. Integration can be achieved through complimentary use of models or through integrated models that systemically combine all relevant aspects in one model. Such whole-of-system models can be useful tools for quantitatively evaluating scenarios. These models allow an assessment of the interactive effects of multiple stressors on various, potentially conflicting, management objectives. All models simplify reality and, as such, have their weaknesses. While minimal models lack multidimensionality, system models are likely difficult to interpret as they require many efforts to decipher the numerous interactions and feedback loops. Given the breadth of questions to be tackled when dealing with coral reefs, the best practice approach uses multiple model types and thus benefits from the strength of different models types

Report on the second workshop of the Network of Experts for ReDeveloping Models of the European Marine Environment

The second workshop of the ‘Network of Experts for ReDeveloping Models of the European Marine Environment’ was held on 22-23 March 2017 in Brussels, Belgium, jointly organized by DG Environment and DG JRC (Water and Marine Resources Unit) within the framework of the Administrative Arrangement (N110661/ENV.C.2/2016/733192) and the Marine Strategy Framework Directive (MFSD). The aim of this workshop was to continue the information exchange between the Commission and marine modelling experts. Another important objective of this initiative is to narrow the gap between modellers and decision makers in order to better exploit the full utility of models. In this context, the workshop consisted of 17 presentations covering the wide use of marine ecosystem models to address several indicators of the MFSD in coastal zones and European regional seas, including assessment, indicator development and scenario building. The presentations dealt with (1) General lectures, (2) Eutrophication, (3) Hydrography, (4) Higher Trophic Levels and (5) Fish. The participants were invited to join the network informal ‘Network of experts on the Modelling of the European Marine Environment (MEME)’. DG Environment and DG JRC emphasized the added value of a joint effort to further develop modelling capabilities with the objective of providing useful advice for policy makers. This report summarizes the workshop and provides further detail on the presentations, discussion and conclusions.JRC.D.2-Water and Marine Resource

Supporting evidence-based adaptation decision-making in South Australia: a synthesis of climate change adaptation research

This research synthesis provides policy-makers and practitioners with an understanding of the building blocks for effective adaptation decision-making, as evidenced through the NCCARF research program. It synthesised a portfolio of adaptation research for each Australian state and territory and addressing the complex relationships between research and policy development.   Each state and territory synthesis report directs users to research relevant identified priorities

Coastal management and adaptation: an integrated data-driven approach

Coastal regions are some of the most exposed to environmental hazards, yet the coast is the preferred settlement site for a high percentage of the global population, and most major global cities are located on or near the coast. This research adopts a predominantly anthropocentric approach to the analysis of coastal risk and resilience. This centres on the pervasive hazards of coastal flooding and erosion. Coastal management decision-making practices are shown to be reliant on access to current and accurate information. However, constraints have been imposed on information flows between scientists, policy makers and practitioners, due to a lack of awareness and utilisation of available data sources. This research seeks to tackle this issue in evaluating how innovations in the use of data and analytics can be applied to further the application of science within decision-making processes related to coastal risk adaptation. In achieving this aim a range of research methodologies have been employed and the progression of topics covered mark a shift from themes of risk to resilience. The work focuses on a case study region of East Anglia, UK, benefiting from the input of a partner organisation, responsible for the region’s coasts: Coastal Partnership East. An initial review revealed how data can be utilised effectively within coastal decision-making practices, highlighting scope for application of advanced Big Data techniques to the analysis of coastal datasets. The process of risk evaluation has been examined in detail, and the range of possibilities afforded by open source coastal datasets were revealed. Subsequently, open source coastal terrain and bathymetric, point cloud datasets were identified for 14 sites within the case study area. These were then utilised within a practical application of a geomorphological change detection (GCD) method. This revealed how analysis of high spatial and temporal resolution point cloud data can accurately reveal and quantify physical coastal impacts. Additionally, the research reveals how data innovations can facilitate adaptation through insurance; more specifically how the use of empirical evidence in pricing of coastal flood insurance can result in both communication and distribution of risk. The various strands of knowledge generated throughout this study reveal how an extensive range of data types, sources, and advanced forms of analysis, can together allow coastal resilience assessments to be founded on empirical evidence. This research serves to demonstrate how the application of advanced data-driven analytical processes can reduce levels of uncertainty and subjectivity inherent within current coastal environmental management practices. Adoption of methods presented within this research could further the possibilities for sustainable and resilient management of the incredibly valuable environmental resource which is the coast

The Benefits to People of Expanding Marine Protected Areas

This study focuses on how the economic value of marine ecosystem services to people and communities is expected to change with the expansion of marine protected areas (MPAs). It is recognised, however, that instrumental economic value derived from ecosystem services is only one component of the overall value of the marine environment and that the intrinsic value of nature also provides an argument for the conservation of the marine habitats and biodiversity