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Marine Ecosystems and Fisheries: Trends and Prospects

النظم الإيكولوجية البحرية ومصائد الأسماك: الاتجاهات والآفاق
Authors: Susan Kay; Jose A. Fernandes; Manuel Barange; Manuel Barange; Munir Ahmed; Mostafa A. R. Hossain; Valentina Lauria;

Marine Ecosystems and Fisheries: Trends and Prospects

Abstract

Dans le delta du Bangladesh, il existe une dépendance importante à l'égard des services écosystémiques aquatiques à la fois sur le plan économique et pour le bien-être local. L'industrie de la pêche a connu une croissance constante avec une production qui a triplé au cours des deux dernières décennies, en grande partie grâce à l'expansion de la pêche aquacole dans les eaux intérieures. L'analyse montre que les impacts du changement climatique sont susceptibles de réduire la production totale potentielle de poissons dans les eaux marines du Bangladesh de moins de dix pour cent. Cependant, ces impacts potentiels sont beaucoup plus importants pour les deux principales espèces commerciales, l'alose Hilsa et le canard de Bombay. Dans le cadre des pratiques de gestion durable, les effets climatiques sont susceptibles de réduire les captures de canards de Hilsa et de Bombay jusqu'à 40 % des captures actuelles d'ici 2050, avec des baisses plus importantes possibles dans le cadre d'une gestion non durable. Cela souligne l'importance des adaptations de gestion pour minimiser les effets du changement climatique, en particulier dans les situations où les taux d'exploitation actuels dépassent les limites durables.

Dentro del delta de Bangladesh existe una dependencia significativa de los servicios de los ecosistemas acuáticos tanto económicamente como para el bienestar local. La industria pesquera ha experimentado un crecimiento constante y la producción se ha triplicado en las últimas dos décadas, impulsada en gran medida por la expansión de las pesquerías de acuicultura continental. El análisis muestra que es probable que los impactos del cambio climático disminuyan la producción potencial total de peces en las aguas marinas de Bangladesh en menos del diez por ciento. Sin embargo, estos impactos potenciales son mucho mayores para las dos especies comerciales principales, el sábalo Hilsa y el pato Bombay. Bajo las prácticas de gestión sostenible, es probable que los efectos climáticos reduzcan las capturas de patos de Hilsa y Bombay para 2050 hasta en un 40 por ciento de las capturas actuales, con posibles disminuciones mayores bajo una gestión insostenible. Esto subraya la importancia de las adaptaciones de gestión para minimizar los efectos del cambio climático, particularmente en situaciones en las que las tasas de explotación actuales superan los límites sostenibles.

Within the Bangladesh delta there is a significant dependence on aquatic ecosystem services both economically and for local well-being. The fisheries industry has seen steady growth with production tripling in the last two decades, largely driven by the expansion in inland aquaculture fisheries. Analysis shows that the impacts of climate change are likely to decrease the potential total fish production in the marine waters of Bangladesh by less than ten per cent. However, these potential impacts are much larger for the two major commercial species, Hilsa shad and Bombay duck. Under sustainable management practices, climate effects are likely to reduce Hilsa and Bombay duck catches by 2050 by up to 40 per cent of the current catches, with larger declines possible under unsustainable management. This underlines the importance of management adaptations to minimize the effects of climate change, particularly in situations where current exploitation rates exceed sustainable limits.

هناك اعتماد كبير داخل دلتا بنغلاديش على خدمات النظم الإيكولوجية المائية من الناحية الاقتصادية ومن أجل الرفاه المحلي. شهدت صناعة مصايد الأسماك نموًا مطردًا مع تضاعف الإنتاج ثلاث مرات في العقدين الماضيين، مدفوعًا إلى حد كبير بالتوسع في مصايد الأسماك الداخلية لتربية الأحياء المائية. ويظهر التحليل أن آثار تغير المناخ من المرجح أن تقلل من إجمالي الإنتاج المحتمل للأسماك في المياه البحرية لبنغلاديش بأقل من عشرة في المائة. ومع ذلك، فإن هذه التأثيرات المحتملة أكبر بكثير بالنسبة للنوعين التجاريين الرئيسيين، هيلسا شاد وبطة بومباي. في ظل ممارسات الإدارة المستدامة، من المرجح أن تقلل الآثار المناخية من مصيد البط في هيلسا وبومباي بحلول عام 2050 بنسبة تصل إلى 40 في المائة من المصيد الحالي، مع احتمال حدوث انخفاضات أكبر في ظل الإدارة غير المستدامة. وهذا يؤكد أهمية تكييف الإدارة لتقليل آثار تغير المناخ، لا سيما في الحالات التي تتجاوز فيها معدلات الاستغلال الحالية الحدود المستدامة.

Country
United Kingdom
Keywords

Fisheries Sustainability, Aquaculture, Ecosystem-based management, Impact of Aquaculture on Marine Ecosystems and Food Supply, Fisheries management, Marine ecosystem, Climate change, Fish Population Dynamics, Biology, Ecosystem, Global and Planetary Change, FIS, Resilience of Coral Reef Ecosystems to Climate Change, Ecology, Geography, Fish, Fishery, Impacts of Climate Change on Marine Fisheries, FOS: Biological sciences, Environmental Science, Physical Sciences, Fishing

  • BIP!
    Impact byBIP!
    citations
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    3
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
3
Top 10%
Average
Average
Green
hybrid