Ecosystem-based Approach Research Articles

Mathematical models for sustainable fisheries management in U.S. waters: Balancing economic growth and conservation

Sustainable fisheries management is critical for balancing the dual objectives of economic growth and environmental conservation, particularly in U.S. waters where overfishing, habitat degradation, and fluctuating marine ecosystems pose significant challenges. This review explores the role of mathematical models in addressing these challenges and guiding fisheries management decisions. Various models, including population dynamics, bioeconomic, and ecosystem-based approaches, are examined for their utility in setting sustainable catch limits, assessing stock health, and predicting ecosystem changes. Through case studies of U.S. fisheries, the paper highlights how these models have been implemented within the framework of federal regulations, such as the Magnuson-Stevens Act, to achieve sustainable yields while supporting economic growth. The review also identifies trade-offs between short-term economic gains and long-term conservation goals, emphasizing the need for adaptive management strategies. Finally, it explores emerging innovations in mathematical modeling techniques, such as artificial intelligence, and provides policy recommendations to enhance the integration of these models into sustainable fisheries management. This paper underscores the importance of mathematical models as essential tools in ensuring the future viability of U.S. fisheries, balancing economic prosperity with the preservation of marine ecosystems.

Statutory and policy-based eco-disaster risk reduction in SADC member states.

To change this reality, it is necessary to include Eco-DRR in strategies and/or plans and to standardise ecosystem-based measures for reducing disaster risks. Additionally, there is an urgent need for empowerment of the existing institutions and creation of networks that are driven by SADC institutions. Overall, it is evident that there is a regional interest and demand to apply and standardise ecosystem-based approaches and natural or green infrastructure solutions toward Eco-DRR.

A GIS-MCDA approach to map environmental suitability of Posidonia oceanica meadows as blue nature-based solutions in the Mediterranean eco-region

The growing environmental risks induced by interacting climate and human-induced pressures threaten the survival and growth of marine coastal ecosystems (MCEs) and the ecosystem services they provide. Nature-based solutions (NBS), consisting of ecosystem-based approaches, have emerged as vital tools for climate adaptation and mitigation facing biodiversity loss and societal challenges. Identifying suitable environmental conditions for implementing Blue-NBS in marine coastal areas is a key priority to drive robust and cost-effective nature-based adaptation pathways. This study developed a suitability model for Blue-NBS, with a specific focus on Posidonia oceanica meadows in the Mediterranean Sea under a baseline scenario. GIS-based Multiple Criteria Decision Analysis (MCDA) was applied for data integration and prioritization of different environmental variables in geomorphological (e.g., depth), water quality (WQ) (e.g., salinity), and climatic (e.g., thermal stress) sub-groups. Suitability classes and scores for each variable were determined using statistical distributions, ensuring a data-driven approach to defining environmental suitability. Variables' weights were derived from the Analytic Hierarchy Process (AHP) based on expert judgment and then combined with scores to generate suitability maps for managing Blue-NBS on seagrasses. Depth was found to be the most dominant environmental variable, with shallow areas (e.g., Northern Adriatic, Gulf of Gabés) showing higher suitability. The southern part of the Mediterranean (e.g., Egypt) reported relatively low scores for both climate and WQ, while the Northern Adriatic had the lowest WQ scores. This study represents the first attempt to evaluate Blue-NBS suitability for seagrass meadows at the eco-regional scale with geomorphologic, WQ, and climatic variables, providing decision support for the selection and allocation of Blue-NBS in different environmental settings. The resulting environmental suitability maps represent a basis for the integration of socio-economic and governance-related indicators into a more complex, multi-tier approach to support NBS mainstreaming.

Forest Restoration through Village Common Forests in the Chittagong Hill Tracts of Bangladesh: The Role of NGO Interventions

Non-Governmental Organizations (NGOs) are widely recognized for their support of biodiversity conservation and forest restoration in tropical developing countries. In the Chittagong Hill Tracts (CHTs) of Bangladesh, ethnic forest-dependent communities have long maintained the Village Common Forest (VCF), an ancestral forest managed for community well-being. In recent years, some VCFs in the CHT have received support from local and international NGOs due to their perceived role in supporting biodiversity, ecosystem services, and improving local livelihoods. Although such support remains limited, its impacts on forest restoration and vegetation are not yet fully investigated. In the present study, we used remote sensing techniques and field surveys to measure vegetation cover changes and tree diversity in selected VCFs in the area. Our findings indicate that vegetation condition and tree diversity were better in NGO-supported VCFs compared with those without NGO intervention. Based on our study, we recommend increasing NGO involvement in VCF management with a more holistic and ecosystem-based approach, fostering institutional cooperation addressing land ownership issues, developing a market for forest ecosystem services, and improving local capacity for science-based forest management and ecosystem restoration in the CHT.

Examining the discrepancy and synergy between marine protected areas and fisheries management in the Bohai Sea, China

Marine protected areas (MPAs) and other area-based conservation measures used in conjunction with climate-smart fisheries management approaches are important for safeguarding ecosystem and fish population health. However, spatial management approaches are often implemented separately from non-spatial management interventions due to their distinct legislative processes, management priorities, and administrating agencies. As global ocean governance becomes increasingly spatial in compliance with the Kunming-Montreal Global Biodiversity Framework, it is imperative to examine the utility of MPAs as a wider ecosystem approach to complement traditional, single species fisheries management. In this study, we examine current policy and management transformations happening in the Bohai Sea in China and demonstrate the discrepancies and synergies between MPA governance and fisheries management. By evaluating their interactions in objective setting, area selection, and management regulations, we reveal the gaps in coordination and consultancy between the government agencies implementing fisheries and spatial conservation measures. In particular, there is ambiguity or lack of consideration of fisheries management objectives in the framing of conservation area objectives and regulations, and vice versa. In addition, the mismatch between stated objectives of MPAs and their geographic coverage of species distribution ranges suggests insufficient incorporation of fishery expertise in conservation planning. To strengthen the cooperation between fisheries and conservation authorities, we identify opportunities and actions for synergizing management goals and ecosystem-based approaches, improving the design of spatial restrictions, and better integrating spatial management interventions as a critical fisheries and ecosystem-based management approach. These proposed changes will necessitate the creation of processes for engaging the full spectrum of expertise and actors, enhancing collaborations at multiple scales and between different sectors. These findings offer practical insights into bridging the gap between fisheries management and MPAs and could inform further decisions on integrated management in the Bohai Sea and elsewhere.

Community structure and environmental drivers of offshore hard-bottom reef fishes in the northern Gulf of Mexico

Abstract Understanding patterns in community structure in large marine ecosystems is necessary for advancing community- and ecosystem-based approaches to marine fisheries management. We analyzed data from a large-scale, fishery-independent video survey to quantify the structure of reef fish communities on offshore hard-bottom reef habitats in the northern Gulf of Mexico (nGOM). A novel aspect of this work is that all species visualized on videos were identified and enumerated over a 13-year period, which allowed for a comprehensive analysis of fish community structure. We observed a total of 243 fish species from 54 families and 14 orders. Species richness and biodiversity varied considerably across the nGOM and were highest in regions that harbor extensive coral reef habitat (south Florida, Louisiana-Texas shelf). Multivariate analyses identified 12 species assemblages, with important fishery species and species of concern (i.e. IUCN-listed) occurring in the largest identified assemblages. One assemblage composed mostly of large-bodied fishery species accounted for 45% by number and 89% by weight of all fish observed. Species assemblages were most strongly associated with depth, temperature, and substrate composition, with weaker associations with the amount of attached algae and vertical relief, while species richness was positively correlated with bottom water temperature. In general, large-scale bathymetric and hydrographic factors (e.g. depth, temperature) were more important than local topographic structure and biogenic habitat in structuring reef fish communities at the spatial scales (i.e.1000 km) considered here. Our results advance ecosystem-based approaches to fisheries management by providing a basis for incorporating multispecies spatial dynamics into the monitoring and assessment of hard-bottom reef fish communities in the nGOM.

Addressing offshore wind farms compatibilities and conflicts with marine conservation through the application of modelled benchmarking scenarios

Offshore wind power generation structures are scheduled for development in the Canary Islands, potentially resulting in spatial overlap with various maritime activities, particularly fishing. It is crucial to point out that some areas that are considered suitable for installing these structures are in protected zones that are part of the Natura 2000 network, and do not have any prior environmental impact assessments. The research delved into the efficacy of utilizing Ecopath with Ecosim software to examine the consequences of implementing this technology in the study area, employing an ecosystem-based approach. To address this question, simulations were executed by assessing three distinct scenarios. The results suggest that there would be changes in the distribution of keystone species such as top predators, alongside a conspicuous decline in the abundance and catches of target species of the fishery. The Ecospace model holds the potential to forecast the impacts of offshore wind installations; however, crucial factors must be carefully considered, such as the lack of information. Notwithstanding the constraints, research like this demonstrates the efficacy of spatial ecosystem modelling in exploring this issue.

Understanding the transmission of bacterial agents of sapronotic diseases using an ecosystem-based approach: A first spatially realistic metacommunity model.

Pathogens such as bacteria, fungi and viruses are important components of soil and aquatic communities, where they can benefit from decaying and living organic matter, and may opportunistically infect human and animal hosts. One-third of human infectious diseases is constituted by sapronotic disease agents that are natural inhabitants of soil or aquatic ecosystems. They are capable of existing and reproducing in the environment outside of the host for extended periods of time. However, as ecological research on sapronosis is infrequent and epidemiological models are even rarer, very little information is currently available. Their importance is overlooked in medical and veterinary research, as well as the relationships between free environmental forms and those that are pathogenic. Here, using dynamical models in realistic aquatic metacommunity systems, we analyze sapronosis transmission, using the human pathogen Mycobacterium ulcerans that is responsible for Buruli ulcer. We show that the persistence of bacilli in aquatic ecosystems is driven by a seasonal upstream supply, and that the attachment and development of cells to aquatic living forms is essential for such pathogen persistence and population dynamics. Our work constitutes the first set of metacommunity models of sapronotic disease transmission, and is highly flexible for adaptation to other types of sapronosis. The importance of sapronotic agents on animal and human disease burden needs better understanding and new models of sapronosis disease ecology to guide the management and prevention of this important group of pathogens.

Roughness Ecosystem-based Approach to Estimate the Exposure Area of Tsunami on a Coastal City: A Case Study in Bengkulu City, Indonesia

Bengkulu City, as the main activity center in Bengkulu Province, is experiencing significant population growth. However, geographically, the city is vulnerable to tsunami disasters. High population growth outside the line with coastal area management also increases the risk of tsunami disasters in Bengkulu City due to green land conversion into built-up land. This condition is exacerbated by coastal abrasion that threatens the coastline, brings residential settlements closer to the shoreline, and conflicts over spatial utilization of the coastal green belt. Therefore, implementing tsunami mitigation measures, mainly through coastal ecosystem-based strategies, is crucial. This study compares the spatial modeling of tsunami inundation in Bengkulu City with three roughness scenarios of coastal vegetation: coastal forest and mangrove. These scenarios include a scenario without coastal vegetation, a scenario based on existing conditions, and a scenario with optimized coastal vegetation. Spatial modeling was conducted using cost distance analysis modeling to calculate the effectiveness of coastal vegetation in reducing tsunamis. The results showed that coastal forests and mangroves in existing conditions could effectively reduce tsunamis by 3.84% compared to land cover without coastal forests and mangroves. The coastal vegetation optimization scenario has effectively reduced the exposure area by 5.00% compared to that without vegetation. The coastal vegetation optimization scenario also has an effectiveness of 1.20% compared to the existing condition. The findings underscore the critical role of coastal vegetation as a natural barrier against tsunamis and emphasize the potential advantages of optimizing land cover to improve coastal protection.

Understanding Local Perspectives on Climate Change and Its Impacts on Small-Scale Fishing Communities in Honda Bay, Palawan, Philippines

Climate change's adverse impacts are already evident, particularly in coastal areas. However, local perception that is essential in formulating policies for mitigating its impacts remains limited. Thus, this study evaluated the level of perception of small fishing communities on climate change and its impacts on livelihood and the environment. The data were obtained using a face-to-face survey with the aid of a structured questionnaire. They were interpreted and analyzed using the Likert point scale, descriptive statistics, and chi-square. A total of 308 male fisherfolks participated in the survey. Majority belong to age 51-60 years old (38%) and 61 years old and above (32%). Most of them (65%) finished elementary and generally (94%) rely on fishing for main source of living. As for income, 47% earned an estimated monthly income of Php 2,501-5,000 and 28% got Php 5,001-7,500. Most of the respondents are full-time fishers (89%) for more than 11 years (87%), and fishing within the municipal water (92%). Majority (90%) have an idea about climate change as reflected by their very high score in Likert Perception (24.3±2.3%). The climate change impacts perceived by the respondents include: increasing sea surface temperature (87%); fish are sensitive to changing climate (87%); and fossil fuel consumption contributes to climate change (84%). They said they got the information from TV/ Radio (99%) and social media (10%). The age (p-value < 0.0032) and source of information (p-value < 0.0348) are among the variables with significant relationship to the perception of respondents on climate change impacts. In total, it appears that majority of fishers are aware of the impacts of climates. It is suggested that effective management actions, such as emergency preparedness schemes and livelihood diversification should be explored to address the specific needs of fishing communities that are vulnerable to the impacts of climate change. Furthermore, an ecosystem-based approach that focuses on socio-economic dynamics and climate-induced changes in assessments and management is essential for the sustainable use of fisheries resources amidst the changing climate.

Environmental impacts in water resources surrounding world surfing reserves: A case study in the Madre Watershed, Brazil

In order to promote the adoption of an ecosystem-based approach in environmental management processes, integrated assessment studies can be conducted to link human activities and observed impacts on natural environments. Analytical models such as DPSIR are used, based on the monitoring of environmental indicators, to improve planning and management processes for water resources at multiple scales. World Surfing Reserves (WSRs) are institutions that have been utilizing this environmental assessment model to successfully implement environmental management strategies and instruments in coastal zones. Building upon the adaptive co-management model developed in the 6th WSR of Bahía de Todos Santos (Mexico), which incorporates DPSIR analysis and the use of GIS (remote sensing) tools in environmental assessment, this research develops a protocol for integrated environmental assessment, focusing on water resource management, through a case study conducted in the 9th WSR of Guarda do Embaú, Santa Catarina, Brazil. It is understood that this protocol can be utilized in other surfing reserves, especially in estuarine regions, to identify priority aspects for water resource management through: (i) water quality indicators, (ii) institutional environmental monitoring reports, and (iii) georeferenced statistical data (GIS). Based on these data, integrated analyses were conducted to determine which polluting agents pose a greater risk to the sustainable management of water resources surrounding the 9th WSR. Among the observed results, it was found that multiple pressure factors pose high environmental risk to the water resource stocks, mainly due to the discharge of urban and agricultural effluents into rivers, as well as deforestation in protected areas directly associated with the conservation of water reservoirs. As a result of these factors, a moderate risk of eutrophication, water scarcity, unavailability of recreational water use, disease spread, and sedimentation was observed, alongside a high risk of biodiversity loss, habitat loss, and unavailability of drinking water. Due to the risks of the mentioned impacts, the aspects identified in this study require management at the appropriate scale for processes occurring in the watershed, in order to gradually mitigate the effects of polluting activities.

Accessible Ecosystem for Clinical Research (Federated Learning for Everyone): Development and Usability Study.

The integrity and reliability of clinical research outcomes rely heavily on access to vast amounts of data. However, the fragmented distribution of these data across multiple institutions, along with ethical and regulatory barriers, presents significant challenges to accessing relevant data. While federated learning offers a promising solution to leverage insights from fragmented data sets, its adoption faces hurdles due to implementation complexities, scalability issues, and inclusivity challenges. This paper introduces Federated Learning for Everyone (FL4E), an accessible framework facilitating multistakeholder collaboration in clinical research. It focuses on simplifying federated learning through an innovative ecosystem-based approach. The "degree of federation" is a fundamental concept of FL4E, allowing for flexible integration of federated and centralized learning models. This feature provides a customizable solution by enabling users to choose the level of data decentralization based on specific health care settings or project needs, making federated learning more adaptable and efficient. By using an ecosystem-based collaborative learning strategy, FL4E encourages a comprehensive platform for managing real-world data, enhancing collaboration and knowledge sharing among its stakeholders. Evaluating FL4E's effectiveness using real-world health care data sets has highlighted its ecosystem-oriented and inclusive design. By applying hybrid models to 2 distinct analytical tasks-classification and survival analysis-within real-world settings, we have effectively measured the "degree of federation" across various contexts. These evaluations show that FL4E's hybrid models not only match the performance of fully federated models but also avoid the substantial overhead usually linked with these models. Achieving this balance greatly enhances collaborative initiatives and broadens the scope of analytical possibilities within the ecosystem. FL4E represents a significant step forward in collaborative clinical research by merging the benefits of centralized and federated learning. Its modular ecosystem-based design and the "degree of federation" feature make it an inclusive, customizable framework suitable for a wide array of clinical research scenarios, promising to revolutionize the field through improved collaboration and data use. Detailed implementation and analyses are available on the associated GitHub repository.

Earth Observation—An Essential Tool towards Effective Aquatic Ecosystems’ Management under a Climate in Change

Numerous policies have been proposed by international and supranational institutions, such as the European Union, to surveil Earth from space and furnish indicators of environmental conditions across diverse scenarios. In tandem with these policies, different initiatives, particularly on both sides of the Atlantic, have emerged to provide valuable data for environmental management such as the concept of essential climate variables. However, a key question arises: do the available data align with the monitoring requirements outlined in these policies? In this paper, we concentrate on Earth Observation (EO) optical data applications for environmental monitoring, with a specific emphasis on ocean colour. In a rapidly changing climate, it becomes imperative to consider data requirements for upcoming space missions. We place particular significance on the application of these data when monitoring lakes and marine protected areas (MPAs). These two use cases, albeit very different in nature, underscore the necessity for higher-spatial-resolution imagery to effectively study these vital habitats. Limnological ecosystems, sensitive to ice melting and temperature fluctuations, serve as crucial indicators of a climate in change. Simultaneously, MPAs, although generally small in size, play a crucial role in safeguarding marine biodiversity and supporting sustainable marine resource management. They are increasingly acknowledged as a critical component of global efforts to conserve and manage marine ecosystems, as exemplified by Target 3 of the Kunming–Montreal Global Biodiversity Framework (GBF), which aims to effectively conserve 30% of terrestrial, inland water, coastal, and marine areas by 2030 through protected areas and other conservation measures. In this paper, we analysed different policies concerning EO data and their application to environmental-based monitoring. We also reviewed and analysed the existing relevant literature in order to find gaps that need to be bridged to effectively monitor these habitats in an ecosystem-based approach, making data more accessible, leading to the generation of water quality indicators derived from new high- and very high-resolution satellite monitoring focusing especially on Chlorophyll-a concentrations. Such data are pivotal for comprehending, at small and local scales, how these habitats are responding to climate change and various stressors.

Ecosystem-based maritime spatial planning in practice? On the limitations of a legalistic planning tradition

The implementation of an ecosystem-based approach (EBA) is a core requirement of the EU Maritime Spatial Planning (MSP) directive. Ecosystem-based management presents a fundamental challenge to established practices concerning the planning of marine space and the governance of human activities at sea. Experience to date indicates considerable variation in the application of EBA across Europe. This variation can be attributed in part to differences in underlying planning traditions and cultures. In this article, we examine the specific case of EBA implementation in the current maritime spatial plan for Germany’s Exclusive Economic Zone (EEZ). Following an interpretive analysis approach, we critically analyse how the scope and function of planning are understood in German MSP policy and practice. A narrow understanding of planning as solely concerned with the spatial coordination of competing claims on marine space is traced to a legalistic terrestrial planning tradition with a long history in German public administration. This narrow interpretation of the role of planning is found to fundamentally restrict the strategic, performative capacity of German MSP and, in particular, the potential for German MSP to apply ecosystem-based management principles. In conclusion, we contend that the implementation of an EBA requires a fundamental shift in planning paradigms and modes of governance. This empirical case provides a basis for critical reflection on the capacity of EU member states to implement an EBA as understood under the MSP directive and the mode of planning this might entail.

Building resilience: Insights into ecosystem-based integrated environmental risk reduction approaches for urban environments in coastal Bangladesh

The intricate relationship between environmental quality, ecosystem services, and human well-being underscores the importance of understanding and addressing environmental complexities. Considering these issues, this research aims to propose ecosystem-based approaches for mitigating environmental risks within the Khulna City Corporation (KCC) area, while also elucidating the connection between ecosystem services and these risks. By doing so, it indirectly addresses disaster risk reduction approaches, acknowledging the relationship between environmental degradation and increased disaster occurrences. Leveraging multi-spectral Landsat images from 2001 (Landsat-5), 2011 (Landsat-5), and 2021 (Landsat-8), the study evaluates LULC dynamics and quantifies ecosystem service values (ESVs) using the Benefit Transfer Method. Additionally, seven key indicators, including land use-based carbon emissions, elevation, LST, NDVI, NDWI, NDSI, and NDBI, were analyzed to monitor spatiotemporal changes. The weighted overlay method was employed to integrate raster data and delineate environmental risk zones driven by deteriorating ESVs in KCC. Notably, the study reveals a significant increase in highly environmental risk areas from 7 % to 34 % and a decrease in medium-risk areas from 92 % to 60 % of the total area between 2001 and 2021 due to the decline in ecosystem services resulting from unplanned rapid urbanization. Furthermore, a moderate negative correlation (R2 values of 0.56, 0.67, and 0.69) between ESVs and the environmental risk index underscores the linkage between deteriorating ecosystem services and the expansion of high-risk zones. Furthermore, this study advocates policies such as drought-resistant tree plantations, community involvement, post-disaster resource provision, funding allocation, and stakeholder knowledge dissemination to enhance the resilience of KCC.

Examining The Role of Soil in Promoting Sustainable Development and Achieving the UN Sustainable Development Goals (SDGs)

Soil is a critical component of terrestrial ecosystems, playing an invaluable role in supporting plant growth, regulating water and nutrient cycles, filtering pollutants, and providing habitat for soil organisms. However, increasing pressures from human activities, including intensive agriculture, deforestation, urbanization, and climate change are degrading soils across the world. Therefore, sustainable management of soil resources is imperative to ensure continued provisioning of ecosystem services, promote sustainable development outcomes, and help us to achieve the UN Sustainable Development Goals (SDGs). This paper reviews literature across multiple disciplines to examine the vital links between soil and realization of the SDGs. Soil properties influence productivity and food security, water availability and quality, climate regulation through carbon storage, biodiversity conservation, and human health. Degraded soils undermine these ecosystem services, exacerbating poverty, hunger, and inequality. Research shows ecosystem-based approaches that prioritize soil health, including conservation agriculture, agroecology, and regenerative systems, can sustainably intensify agriculture while restoring multi-functionality. Additionally, nature-based solutions utilizing plant-soil interactions for restoration have demonstrated cost-effectiveness. Achieving land degradation neutrality is now an explicit target under the United Nations Convention to Combat Desertification (UNCCD), emphasizing the need to scale soil-focused initiatives within the SDG framework. Therefore, protecting and restoring global soil assets can serve as a nexus in policy frameworks to simultaneously advance progress across multiple SDGs.

Adapting Street Profile Design by Using Nature-Based Solutions in New Neighbourhoods and the Retrofit of Buildings

The aim of this paper is to analyse ways to upgrade the existing urban and architectural features in the built environment by incorporating and enhancing the use of nature-based solutions (NbSs) in relation to the city of Bucharest, which lacks green spaces mapping and quality studies and literature. The paper draws a comparison between the design elements used in other cities, namely Lisbon, Vienna and Rome. These are also analysed and compared in relation to the integration in a mixed urban development plan for a research-to-business neighbourhood design competition in Măgurele, situated near Bucharest. A matrix of five criteria is used for the analysis: historical context, urban context, nature versus design, use and climate context. In Lisbon, examples range from new green walls, modern green Mediterranean courtyards, NbS in scaffolding and temporary walls, the placing of Miradores around the city to green-and-healthy marketing tools for restaurants. For Vienna, a street is being remodelled in an innovative way using independent green infrastructure designs in existing retrofitted parking units, hotels and residential constructions. For Bucharest, emergent pop-up, small scale, bottom-up solutions push the city’s urban fabric beyond the greyish look of socialist-communist background and eclectic late 19th, early 20th century built heritage. For Măgurele, different versions of a modern neighbourhood and street profile design issues are analysed, using 3D renderings that incorporate NbS at various insertion scales. Existing example cases showcase new dimensions and toolsets of the adaptation of the urban fabric based on a more ecosystem-based approach of architectural-urban research by design, as possible instruments that facilitate a Green Transition in urban settings. Covering more cities in the future would add to the impact and contribution of this study.

Mainstreaming ecosystem-based approaches into disaster risk reduction policies: a comparative study of Nepal, India, and Bangladesh

Humanity faces a rising number of challenging disasters due to their increasing unpredictability and scale. While large-scale engineering solutions have been the mainstream approach, there is a growing acknowledgment that ecosystem-based disaster risk reduction (Eco-DRR) is a suitable approach in the long term due to its cost-effectiveness, social equity, and environmental sustainability. Governments worldwide are integrating Eco-DRR into policies and legislation. Here, we review the extent of integration of Eco-DRR into DRR policies and legislation in Nepal, India, and Bangladesh using content analysis based on five criteria: acknowledgment, inclusion, weighting, resources, and reflexivity. While Eco-DRR principles are acknowledged and included in the national policies of these three countries, they are not prioritized as compared to competing alternatives due to limited integration tools. Resource allocation is directed towards prevention and relief mitigation, with limited emphasis on research and capacity building, which are crucial for strengthening Eco-DRR. Notably, policy aspirations still need to be realized in legislative action. Strengthening Eco-DRR requires enhanced integration, capacity-building, and robust institutions to boost resilience.

Comparison of floating and traditional artificial reef areas using an ecosystem-based approach in the Dashentang area of Bohai Bay, China

Instead of the conventional fishery survey-based approach, this study used an ecosystem-based approach to evaluate the ecological impacts of artificial reefs (ARs). Trophic models were initially employed for floating artificial reef area (FARA), traditional artificial reef area (TARA), and reef-free control area (CONA) in the Dashentang area of Bohai Bay, China. Ecosystem-based analyses of FARA and TARA highlighted similar trophic functioning characteristics. A substantial proportion of energy occurred at trophic levels I and II, and most of the primary production was utilized through grazing pathways. As a structuring group, zoobenthos played a pivotal role in enabling pelagic-benthic coupling in both ecosystems. Additionally, the top-down control in the FARA and TARA ecosystems was enhanced. Conventional surveys and comparative ecosystem-based analyses revealed distinct differences between the two ecosystems. In FARA, a significant increase was observed in pelagic fish and zoobenthos, with increases of 3.60- and 4.44-fold, respectively, compared with CONA. Conversely, TARA showed a considerable increase in demersal fish, approximately 2.6 times greater than that of CONA. Based on the biomass disparity between the two ARs, the ecosystem-based approach revealed that the FARA ecosystem led to enhanced energy pathways from detritus, greater total system throughput, higher energy cycle proportion, and more efficient nutrient transfer. Furthermore, the FARA ecosystem showed relatively high stability and maturity (total primary production/total respiration, 1.616<1.946) compared to the TARA ecosystem, suggesting a greater potential to withstand disturbances. Consequently, marine ecosystems respond differently to AR management initiatives. This study emphasizes the reliability of ecosystem-based evaluations during the initial phases of AR construction. Despite being a preliminary pilot study, this study offers insights into the impact on AR ecosystems, especially the role of floating ARs in coastal management.

Winning with customers: Achieving differentiation in custody and asset servicing

Custodians and asset servicers continue to face headwinds from a tough macro environment and changing regulatory landscape, while being at the cusp of seismic technology changes. This includes artificial intelligence (AI), large language models (LLM) and digital ledger technology (DLT) that are delivering ground-breaking insights from vast data sources and enabling digitisation of assets that can redefine value chains. The securities services industry is constantly challenged to get the right balance between providing robust and efficient core services and innovative solutions for the future. So, amid the deluge, where should these institutions focus attention to service evolving client needs and sharpen their competitive differentiation? Should companies prioritise new value creation in core services by continuing to focus on data quality, efficiency, risk reduction and resilience initiatives using latest technologies such as AI and machine learning (ML)? Or should they focus more on augmenting the client experience with newer datadriven services and insights? Is a data-sharing and collaboration-driven platform and ecosystembased approach going to drive the future? This paper touches on some of the considerations and strategies that custodians are focusing on today to achieve client-oriented differentiation in custody and asset servicing.