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Managing waters shared across national boundaries: Treasury of papers helps capture 20 years of lessons

ws. They warn that:

  • The threat of water scarcity is being exacerbated by climate change and a growing population;
  • Water projects are severely underfunded, complicating efforts to implement more sustainable water management policies; and
  • Water management responsibilities are decentralized and face difficulties in coordination.

Global warming changing the North Atlantic fisheries

Scientists forecast important changes to fish stocks in North Atlantic marine ecosystems where surface temperatures are trending higher in, for example, the North Sea but lower in the Humboldt Current. These changes are a critical consideration in the development of ecosystem approaches to fisheries management.

Data show the largest temperature change underway in the North Sea, where waters were 1.38C warmer in 2009 compared with 1982. By comparison, waters in the Iceland Shelf are 1.02C warmer, the Gulf of Mexico waters are 0.27C warmer and the U.S. Southeast Shelf waters are 0.05C warmer.

There is a downward trend in fish yields in the North Sea, Celtic-Biscay Shelf and Iberian Coastal ecosystems, attributed to reduced zooplankton production, increased water column stratification, and reduced seasonal nutrient mixing in the upper water layers.

Coastal condition, Gulf of Mexico

Authors Graca-Ros et al. offer a case study to estimate the coastal condition in the Gulf of Mexico, including habitat degradation, water quality, sediment quality, fish, and benthic fauna. Different parameters were measured for each module and categorized as being "good" (score of 5), "fair" (score of 3) or "poor" (score of 1). The Coastal Condition Index was calculated as the mean of the scores for all modules.

Governance challenges, Nile River Basin

Authors Paisley and Henshaw discuss the multiplicity of governance challenges in the transboundary Nile River Basin (extends through 1

Contact: Terry Collins
United Nations University

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