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  • Climate change  (23)
  • 551.4
  • American Meteorological Society  (8)
  • WorldFish  (8)
  • Lagos (Nigeria)  (7)
  • Blackwell Publishing Ltd  (1)
  • Institute of Physics
  • Springer Nature
  • Springer Science + Business Media
  • 2020-2023  (7)
  • 2020-2022  (17)
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  • 1
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    High‐Resolution Integrated Transport Model for Studying Surface Water–Groundwater Interaction (2021)
    Blackwell Publishing Ltd | Malden, US
    Details
    Publication Date: 2021-06-27
    Description: Transport processes that lead to exchange of mass between surface water and groundwater play a significant role for the ecological functioning of aquatic systems, for hydrological processes and for biogeochemical transformations. In this study, we present a novel integral modeling approach for flow and transport at the sediment–water interface. The model allows us to simultaneously simulate turbulent surface and subsurface flow and transport with the same conceptual approach. For this purpose, a conservative transport equation was implemented to an existing approach that uses an extended version of the Navier–Stokes equations. Based on previous flume studies which investigated the spreading of a dye tracer under neutral, losing and gaining flow conditions the new solver is validated. Tracer distributions of the experiments are in close agreement with the simulations. The simulated flow paths are significantly affected by in‐ and outflowing groundwater flow. The highest velocities within the sediment are found for losing condition, which leads to shorter residence times compared to neutral and gaining conditions. The largest extent of the hyporheic exchange flow is observed under neutral condition. The new solver can be used for further examinations of cases that are not suitable for the conventional coupled models, for example, if Reynolds numbers are larger than 10. Moreover, results gained with the integral solver provide high‐resolution information on pressure and velocity distributions at the rippled streambed, which can be used to improve flow predictions. This includes the extent of hyporheic exchange under varying ambient groundwater flow conditions.
    Description: Technische Universität Berlin, Germany
    Description: German Research Foundation http://dx.doi.org/10.13039/501100001659
    Keywords: 551.4 ; aquatic systems ; sediment-water interface ; transport model
    Type: article
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  • 2
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    Scoping report: current status of index-based insurance in Bangladesh (2021)
    WorldFish | Penang, Malaysia
    In:  http://aquaticcommons.org/id/eprint/12752 | 115 | 2013-12-03 14:04:41 | 12752 | WorldFish Center
    Details
    Publication Date: 2021-07-05
    Description: With current and anticipated increases in magnitude of extreme weather events and a declining consistency in weather patterns, particularly challenging for agriculture, there has been a growing interest in weather index-based insurance (IBI) schemes in Bangladesh. A number of weather index-based insurance products have already been tested and applied across Asia and Africa, with varying degrees of success, as a mechanism to improve livelihood security by enabling vulnerable populations to transfer risk associated with climate change, extreme weather events and other hazards. In the process, these efforts have generated important new knowledge on how these schemes can be designed and implemented for optimal results. However, the practice of index-based insurance is still limited in Bangladesh, and the experience and knowledge generated by the different stakeholders involved needs to be better communicated.
    Description: CGIAR Research Program on Climate Change, Agriculture and Food Security
    Description: CGIAR Research Program on Aquatic Agricultural Systems
    Description: International Fund for Agricultural Development (IFAD)
    Keywords: Atmospheric Sciences ; Agriculture ; Aquatic Agricultural Systems ; Climate change ; Insurance ; Bangladesh
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 10
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  • 3
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    Fish for the future: Fisheries development and food security for Kiribati in an era of global climate change (2021)
    WorldFish | Penang, Malaysia
    In:  http://aquaticcommons.org/id/eprint/15600 | 115 | 2014-11-19 10:02:49 | 15600 | WorldFish Center
    Details
    Publication Date: 2021-07-08
    Description: The Republic of Kiribati is a vast South Pacific island group with one of the largest exclusive economic zones (EEZs) in the world. Kiribati waters support a wealth of marine fisheries activities. These activities occur in oceanic, coastal and inshore environments and range from large, foreign, industrial-scale oceanic fishing operations to small-scale, domestic, inshore subsistence fisheries, aquaculture and recreational fisheries. Kiribati has developed a framework of domestic and international governance arrangements that are designed to sustainably manage its wealth of marine resources. The report provides background information for fisheries projects in Kiribati that aim to build food security, improve artisanal livelihoods and strengthen community engagement in fisheries governance. It provides information on the current status of Kiribati fishery resources (oceanic and coastal), their current governance and future challenges. Fish and fisher alike pay little heed to maritime boundaries and bureaucratic distinctions. This report covers both sides of the oceanic/coastal boundary because of the I-Kiribati communities’ interest in oceanic fisheries such as tuna and their heavy dependence on its fisheries resources for food security and economic development. The report focuses on two potential pilot sites for community-based fisheries management projects: North Tarawa and Butaritari.
    Keywords: Agriculture ; Aquaculture ; Adaptive management ; Aquatic resources ; Climate change ; Coastal fisheries ; Fisheries ; Governance ; Fisheries management ; Food security ; Marine fisheries ; Small-scale fisheries ; Livelihoods ; Gender ; Policy ; Pacific
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 79
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  • 4
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    Weather index insurance: Lessons learned and best practices for Bangladesh (2021)
    WorldFish | Penang, Malaysia
    In:  http://aquaticcommons.org/id/eprint/15687 | 115 | 2014-11-19 10:20:18 | 15687 | WorldFish Center
    Details
    Publication Date: 2021-07-09
    Description: WorldFish and the International Centre for Climate Change and Development (ICCCAD) held a two-day workshop on the topic of Weather Index-Based Insurance: Lessons Learned and Best Practices for Bangladesh. Weather index insurance is based on a predefined weather event which when triggered ensures automatic payout to farmers who have taken out insurance. For example, the climatic trigger could be a predefined consecutive number of days where rainfall is below a set level or when the floodwater level reaches above a certain point. Index insurance has been operating for about 10 years in many countries but is still at an early stage in Bangladesh, where there are two schemes currently being piloted and three other projects being developed. The aim of the two-day workshop was twofold: to ascertain the present state of index insurance in Bangladesh and elsewhere, and to work together to identify ways forward.
    Description: Report of a workshop held 8-9 September 2013, Dhaka, Bangladesh.
    Keywords: Agriculture ; Aquaculture ; Climate change ; Farmers ; Insurance ; Bangladesh
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 11
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  • 5
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    Economic analysis of climate change adaptation strategies in selected coastal areas in Indonesia, Philippines and Vietnam (2021)
    WorldFish | Penang, Malaysia
    In:  http://aquaticcommons.org/id/eprint/11250 | 115 | 2013-08-12 21:38:56 | 11250 | WorldFish Center
    Details
    Publication Date: 2021-06-30
    Description: This report is an account of a cross-country study that covered Vietnam, Indonesia and the Philippines. Covering four sites (one each in Indonesia and Vietnam) and two sites in the Philippines, the study documented the impacts of three climate hazards affecting coastal communities, namely typhoon/flooding, coastal erosion and saltwater intrusion. It also analyzed planned adaptation options, which communities and local governments can implement, as well as autonomous responses of households to protect and insure themselves from these hazards. It employed a variety of techniques, ranging from participatory based approaches such as community hazard mapping and Focus Group Discussions (FGDs) to regression techniques, to analyze the impact of climate change and the behavior of affected communities and households.
    Description: International Development Research Center (IDRC)
    Description: Swedish International Development Cooperation Agency (Sida)
    Keywords: Ecology ; Climate change ; Disasters ; Ecosystems ; Research ; Vietnam ; Philippines ; Indonesia
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 27
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  • 6
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    Exploratory analysis of resource demand and the environmental footprint of future aquaculture development using Life Cycle Assessment (2021)
    WorldFish | Penang, Malaysia
    In:  http://aquaticcommons.org/id/eprint/15594 | 115 | 2014-11-19 08:33:03 | 15594 | WorldFish Center
    Details
    Publication Date: 2021-07-08
    Description: Increases in fish demand in the coming decades are projected to be largely met by growth of aquaculture. However, increased aquaculture production is linked to higher demand for natural resources and energy as well as emissions to the environment. This paper explores the use of Life Cycle Assessment to improve knowledge of potential environmental impacts of future aquaculture growth. Different scenarios of future aquaculture development are taken into account in calculating the life cycle environmental impacts. The environmental impact assessments were built on Food and Agriculture Organization statistics in terms of production volume of different species, whereas the inputs and outputs associated with aquaculture production systems were sourced from the literature. The matrix of input-output databases was established through the Blue Frontiers study.
    Keywords: Agriculture ; Aquaculture ; Aquaculture ; Climate change ; Development ; Environmental assessment ; Environmental impact ; Research
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 27
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  • 7
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    Importance of Orography for Greenland cloud and melt response to atmospheric blocking (2020)
    American Meteorological Society
    Details
    Publication Date: 2022-05-25
    Description: Author Posting. © American Meteorological Society, 2020. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Hahn, L. C., Storelvmo, T., Hofer, S., Parfitt, R., & Ummenhofer, C. C. Importance of Orography for Greenland cloud and melt response to atmospheric blocking. Journal of Climate, 33(10), (2020): 4187-4206, doi:10.1175/JCLI-D-19-0527.1.
    Description: More frequent high pressure conditions associated with atmospheric blocking episodes over Greenland in recent decades have been suggested to enhance melt through large-scale subsidence and cloud dissipation, which allows more solar radiation to reach the ice sheet surface. Here we investigate mechanisms linking high pressure circulation anomalies to Greenland cloud changes and resulting cloud radiative effects, with a focus on the previously neglected role of topography. Using reanalysis and satellite data in addition to a regional climate model, we show that anticyclonic circulation anomalies over Greenland during recent extreme blocking summers produce cloud changes dependent on orographic lift and descent. The resulting increased cloud cover over northern Greenland promotes surface longwave warming, while reduced cloud cover in southern and marginal Greenland favors surface shortwave warming. Comparison with an idealized model simulation with flattened topography reveals that orographic effects were necessary to produce area-averaged decreasing cloud cover since the mid-1990s and the extreme melt observed in the summer of 2012. This demonstrates a key role for Greenland topography in mediating the cloud and melt response to large-scale circulation variability. These results suggest that future melt will depend on the pattern of circulation anomalies as well as the shape of the Greenland Ice Sheet.
    Description: This research was supported by the Woods Hole Oceanographic Institution Summer Student Fellow program, by the U.S. National Science Foundation under AGS-1355339 to C.C.U., and by the European Research Council through Grant 758005.
    Keywords: Ice sheets ; Blocking ; Cloud cover ; Topographic effects ; Climate change ; Climate variability
    Repository Name: Woods Hole Open Access Server
    Type: Article
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  • 8
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    Understanding the gender dimensions of adopting climate-smart smallholder aquaculture innovations (2021)
    WorldFish | Penang, Malaysia
    In:  http://aquaticcommons.org/id/eprint/20653 | 115 | 2016-06-01 02:08:39 | 20653 | WorldFish Center
    Details
    Publication Date: 2021-07-11
    Description: This study explored how climate-smart agricultural and aquaculture innovations may lead to more successful climate adaptation efforts and enhanced resilience for both men and women in households and across communities, as well as to improved and equitable outcomes in terms of income, nutrition and livelihood opportunities. Specifically, it investigated efforts to target women with household aquaculture innovations to understand (1) if such approaches enable women to use or benefit from them; (2) if and how usage impacts the sustained use of these innovations; and (3) if it would be possible to scale out these innovations to achieve large scale development outcomes.
    Description: CGIAR Research Program on Aquatic Agricultural Systems
    Keywords: Aquaculture ; Sociology ; Aquatic Agricultural Systems ; Small-scale aquaculture ; Gender ; Climate change ; Research ; South Asia ; Bangladesh
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 43
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  • 9
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    Climate change: impacts and threats on freshwater aquaculture (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24583 | 19325 | 2018-05-20 15:55:56 | 24583 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: This paper examines the major effects of climate charge on aquaculture, especially on the freshwater ecosytem. Aquaculture as established is not practiced evenly across the world. Therefore, the paper highlights the current aquaculture practices within the regions and across the different environments to ascertain the major effects of climate variations on the freshwater ecosystem and aquaculture practices in particular. The main elements of climate change that would impact on aquaculture produ ction, such as sea level and temperature rise, changes in monsoon patterns and extreme climatic events and water stress, among others were properly looked at and the reasons for their effects addressed. The different elements of climate change that are experienced in varying degrees can be either positive or negative or directly or indirectly, depending on the different culture systems that are practiced. It is in the process of our study that we brought out the complex attributes of climate change as it affects aquaculture productivity and the possible roles that the society can play to ameliorate the harsh effects of this ugly monstet; referred to as ”climate change and the consequent global warming trends.
    Description: Includes: 17 references.
    Keywords: Atmospheric Sciences ; Aquaculture ; Nigeria ; Climate change ; Freshwater ; Aquaculture ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 72-75
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  • 10
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    Synthesis of climate change effects on water sources for aquaculture (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24592 | 19325 | 2018-05-20 16:08:17 | 24592 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The effect of climate change on the aquatic environment has been well documented with results detailing increase in green house gases and global temperature. Water quantity and quality for aquaculture is also affected by this global phenomenon. Increasing global temperatures affects many sectors in an ecosystem. Water use in aquaculture can be in-situ or ex-situ. Groundwater is expected to be recharged if climate change leads to increased rainfall and runoff but empirical evidence suggests otherwise. The sustainability of groundwater for aquaculture is therefore threatened. Increased temperatures of surface waters can affect water quality and suitability for use in aquaculture with attendant biofouling and growth of thermophilic algae. Rainwater is affected by human activities and pollution as well as materials used for its collection. It is usually low in pH and will need to be buffered. The use of water from any source as well as the use of water bodies for aquaculture must be done with regular analysis of parameters since climate change is an ongoing process.
    Description: 34 references.
    Keywords: Atmospheric Sciences ; Aquaculture ; Nigeria ; Groundwater ; Surface water ; Rain water ; Climate change ; Aquaculture ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 104-108
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