Mediterranean Sea region
The Mediterranean Sea region — the largest of the semi-enclosed European seas — is surrounded by 22 countries, which together share a coastline of 46 000 km. It is also home to around 480 million people living across three continents: Africa, Asia and Europe. It is still one of the world's busiest shipping routes with about one-third of the world's total merchant shipping crossing the sea each year.
Approximately one-third of the Mediterranean population is concentrated along its coastal regions. Meanwhile, about 250 million people (or 55% of the total population) resides in coastal hydrological basins. In the southern region of the Mediterranean, 65% of the population (around 120 million inhabitants) is concentrated in coastal hydrological basins, where environmental pressures have increased.
The need for cooperation and coordination amongst all the countries bordering the Mediterranean has long been recognised. This has resulted in almost 40 years of international efforts to protect this fragile and vulnerable ecosystem: the In 2005, the Euro-Mediterranean partners committed themselves to substantially reduce pollution in the Mediterranean region by 2020. This became known as the ' (MAP); the  and the (EUROMED). EUROMED is also referred to as the and was re-launched in 2008 as the (UfM). ' (H2020) endorsed in Cairo in 2006. It is now one of the key initiatives endorsed by UfM at its launch in 
H2020 builds on the work carried out by national and regional institutions. It operates within the framework of new and existing environmental policy instruments, and it supports the implementation of pollution-reduction commitments undertaken in the framework of the MAP and its Barcelona Convention. A number of concrete actions, as well as a on how to depollute the Mediterranean by 2020, were suggested during the . The corresponding roadmap for the first phase of implementation (the period from 2007 to 2013) led to concrete developments within each of its different components ( ).
The mid-term review of the H2020 initiative and confirmed significant progress in investments in critical infrastructures, in building human capital, and in mainstreaming environment into other policies. The review stressed the strategic focus provided by the UNEP/MAP hotspots list and National Action Plans (NAPs).This marked an important milestone for regional environmental cooperation and commitment.
What are the main problems/threats related to the Mediterranean Sea region?
The Mediterranean Sea region has been identified as one of the main climate change hotspots (i.e. one of the areas most responsive to climate change) due to water scarcity, concentration of economic activities in coastal areas, and reliance on climate-sensitive agriculture. However, the region itself emits low levels of greenhouse gases (GHGs) as compared to other areas in the world. Carbon dioxide (CO2) emissions data show that in 2009, the Mediterranean countries together emitted 6.7% of the world's emissions, equivalent to more than 2 billion tonnes of CO2. However, this amount has increased by a factor of 4 in the last 50 years, with an increase in the contribution from countries from the southern region of the Mediterranean from 9% to 30%. Meanwhile, the contribution from all European Union (EU) Mediterranean countries has decreased over the same period from 88% to 54%.
Since 1970, an increase in air temperature of almost 2 °C has been recorded in south-western Europe (the Iberian peninsula and the south of France). The same increase has also been noted in northern Africa, although the paucity of data makes it more difficult to estimate. The range of the diurnal cycle is shrinking. As for rainfall, precipitation has increased in the northern Alps, yet decreased in southern Europe, where a 20% drop in rainfall has been recorded. The (WEI) (defined as the mean annual total demand for fresh water, divided by the long-term average freshwater resources) shows that southern countries are amongst the most water-stressed Mediterranean countries, with many having a WEI higher than 40%. Four southern Mediterranean countries (Egypt, Israel, Syria and Libya), together with Malta, have WEIs exceeding 80%. According to existing projections, the Mediterranean population classified as 'water-poor', (i.e. below 1 000 m3 per resident per year) is forecast to increase from 180 million people today to over 250 million within 20 years.
Sea-level rise is also of concern, with some parts of the region showing increases of more than 6 mm per year, and others showing decreases of more than 4 mm per year. The global mean of sea-level rise was around 3 mm per year over the last two decades. The Intergovernmental Panel on Climate change (IPCC) predicts a sea-level rise of 0.1–0.3 m by 2050 and of 0.1–0.9 m by 2100, with significant (and possibly higher) impacts on the southern Mediterranean region.
The Mediterranean region is characterised by a unique, rich, yet fragile biodiversity, hosted by many diverse ecosystems across the region,which together form an invaluable natural capital on which populations and economies depend. It is estimated that between 10 000 and 12 000 marine species thrive in the Mediterranean Sea. Around 20–30% of these species are endemic. Many of these species are threatened by a range of human activities. Pollution from land-based sources, such as discharges of excess nutrients and hazardous substances, marine litter, over-fishing, and degradation of critical habitats, are responsible for this biodiversity loss. The introduction of invasive alien species presents a threat to the biodiversity, structure, functioning, and stability of the invaded ecosystem. The number of invasive alien species has increased significantly since 1970, and currently stands at around 1 000.
The recent EEA report on the Mediterranean provided a number of key findings related to pollution of the sea. Over the last decade, sanitation has improved. Between 2003 and 2011, the proportion of the Mediterranean region population with access to sanitation increased from 87.5% to 92%. There are still 17.6 million people in the region without sanitation, a third of them living in urban areas.
Progress in urban wastewater management is difficult to assess as the data available do not provide sound evidence on regional trends. However, there is great potential to reuse wastewater in the region as currently only around 1% of wastewater is reused.
Solid waste generated in the region is approximately half that of the EU. Waste generation in the southern Mediterranean region has grown approximately 15% over the last decade, mostly due to a growing population and increased consumption. Waste management needs significant improvement. Around three-quarters of waste is collected, but most of this is still disposed in open dumps, which can have health impacts and lead to environmental problems. Although the EU is targeting a 70% recycling rate of household waste by 2030, less than 10% of the waste collected in the Mediterranean region is currently recycled.
Industrial emissions have a heavy impact on the Mediterranean. While pollution from heavy metals in seawater has decreased in recent years, local marine pollution from cities, industry and tourist resorts is still leading to widespread pollution of seas and beaches.
What are the main policy responses to key challenges?
Considering the systemic nature of the issues faced by the Mediterranean region, the Parties to the Barcelona Convention adopted an  as an overarching principle of its policies and actions. This was with the view to achieve good environmental status according to an ambitious roadmap and cycle-based timetable, the first of which extends until 2019–2020. This focuses on a renewed emphasis on implementation and integration that will strengthen the ability to understand and address cumulative risks and effects, and will also better focus actions on priority targets. The Ecosystem Approach brings many sectoral analyses and management measures into a single integrated framework, which will result in an adaptive management strategy that will be periodically monitored, evaluated and revised. The implementation of the Ecosystem Approach process is developed in line with the Moreover, other EU policies, such as the , the and  Directives, the , and the also take an ecosystems approach. They aim to ensure the integration of environmental concerns into the different policies, agreements and legislative measures that have an impact on the marine environment.
What are the main challenges ahead?
The Mediterranean region is undergoing intensive demographic, social, cultural, economic and environmental changes. As Mediterranean countries are already facing important issues of water stress and extreme climate events (such as floods and droughts) climate change will most probably exacerbate issues, resulting in significant human and economic losses. According to the IPCC, a temperature rise of 2–3 °C is expected in the Mediterranean region by 2050, and a rise of 3–5 °C is expected by 2100. Coordinated adaptation strategies and measures, across societies and economic sectors, will be key to respond to the changes.
Population growth, combined with the growth of coastal urban hubs, generates multiple environmental pressures. These stem from increased demand for water and energy resources, generation of air and water pollution in relation to wastewater discharge or sewage overflows, waste generation, land consumption, and degradation of habitats, landscapes, and coastlines. These pressures are further amplified by the development of tourism, often concentrated in Mediterranean coastal areas, and rapidly evolving changes in consumption patterns as a result of increasing development. Since 1995, tourism has grown by almost 75% and projections show that the number of arrivals could reach around 640 million by 2025.
Conversely, many infrastructures designed today for dealing with environmental and pollution problems will not be fully relevant to the needs of 2025. The' based on the difference between the pollution that will be produced in 2025 and the pollution and flows that will be treated by the facilities that are already in place or are planned with secured funding. Existing depollution targets can only be achieved if the current 'end-of-pipe' solutions are complemented by other policies dedicated to pollution reduction and control at source or recycling. Maintenance and operational costs will rise significantly following recent investments, and countries will have to put in place adequate economic instruments to deal with operating costs separately from investment costs. In addition to the existing tariffs to be paid for the delivery of pollution abatement services, pollution charges are also needed.
 South region is composed of Algeria, Egypt, Israel, Jordan, Lebanon, Libya, Morocco, Palestine, Syria and Tunisia. All of which, apart from Syria are partners countries under the European Neighbourhood Policy Instrument Shared Environment Information System (ENPI-SEIS) project implemented by the European Environment Agency (EEA) in the period 2010–2015.
 Mediterranean Action Plan (MAP).
 Union for the Mediterranean (UfM).
 Horizon 2020 Initiative (H2020).
 Joint Declaration of the Paris Summit for the Mediterranean, Paris, 13 July 2008.
 European Commission — Union for the Mediterranean, Synthesis report and recommendations regarding the mid-term assessment of the Horizon 2020 initiative to de-pollute the Mediterranean, draft May 2014 (not published).
 Giorgi, F., 2006, 'Climate change hot-spots', Geophysical Research Letters 33(8), pp. L08707.
The reminder is made of countribution from the West Balkans countries and Turkey.
 In climatology, the diurnal cycle is one of the most basic forms of climate patterns. Diurnal temperature variation is a meteorological term that relates to the variation in temperature that occurs from the highs and lows during the day.
 IPCC, 2013, Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, edited by T.F. Stocker, D. Qin, G.-K. Plattner, M. Tignor, S.K. Allen, J. Boschung, A. Nauels, Y. Xia, V. Bex and P.M. Midgley, Intergovernmental Panel on Climate Change, Cambridge University Press, Cambridge, United Kingdom and New York.
 Zenetos, α., Gofas, S., Morri, C., Rosso, A., Violanti, D., Garcia Raso, J.E., Cinar, M.E., Almogi-Labin, A., Ates, A. S., Azzurro, E., Ballesteros, E., Bianchi, C.N., Bilecenoglu, M., Gambi, M.C., Giangrande, A., Gravili, C., Hyams-Kaphzan, O., Karachle, P.K., Katsanevakis, S. et al., 2012, 'Alien species in the Mediterranean Sea by 2012. A contribution to the application of European Union's Marine Strategy Framework Directive (MSFD). Part 2. Introduction trends and pathways', Mediterranean Marine Science 13(2) accessed 14 April 2014.
 Horizon 2020 Mediterranean report, Toward shared environmental information systems, EEA-UNEP/MAP joint report, has been coordinated by the EEA and the United Nations Environment Programme/Mediterranean Action Plan with financial support from the European Commission under the ENPI-SEIS project.
 The 15th Conference of the Contracting Parties (COP15) to the Barcelona Convention (Almeria, Spain, 2008) decided (through Decision IG.17/5) to progressively apply the ecosystem approach. The COP17 (Paris, 2012) confirmed the importance given to the EcAp in the Mediterranean, by recognizing it as a guiding principle for the overall work under the Barcelona Convention. The Contracting Parties agreed (through Decision IG.20/4) on an overall vision and goals for EcAp, on 11 ecological objectives, operational objectives and indicators for the Mediterranean, adopted the timeline for implementing the ecosystem approach until 2019 and established a six-year cyclic review process of its implementation, with the next EcAp cycle to cover 2016–2021. At COP 18 (Istanbul, 2013) targets for achieving Good Environmental Status of the Mediterranean Sea and its coastal zone by 2020 were adopted, and through Decision IG. 21/3 ( the so called COP18 EcAp Decision), the Contracting Parties also agreed to design an Integrated Monitoring and Assessment Programme by the end of 2015, starting its implementation from 2016, and mandated the Secretariat to carry out an assessment of the state of the Mediterranean environment in 2017.
 Habitats Directive.
 Birds Directive.
 Bathing Water Directive.
 Raphaël Billé, 2008, Adapting to climate change in the mediterranean: Some Questions & answers, Iddri Synthèse n° 01/2008, Paris.
EIB — Plan Bleu, 2008, FEMIP Study on Climate Change and Energy in the Mediterranean, EIB — Plan Bleu.
Plan Bleu, 2008, 'Les perspectives du Plan Bleu sur le développement durable en Méditerranée', Sophia-Antipolis.
SOER 2015 regional briefings provide an overview of state of the environment across three regions, identified as priority areas in the EU's 7th Environmental Action Programme. They are part of the EEA's report SOER 2015, addressing the state of, trends in and prospects for the environment in Europe. The EEA's task is to provide timely, targeted, relevant and reliable information on Europe's environment.
For references, see www.eea.europa.eu/soer or scan the QR code.
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