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Public Participation is stimulated in key international instruments such as the 1998 Aarhus Convention (Convention on Access to Information, Public Participation in Decision-Matters), signed and ratified by many of the Caspian Sea countries, and builds on the requirements of the Commission on Sustainable Development to promote the implementation of Agenda 21 and the follow-up to the World Summit on Sustainable Development.  Public participation is required within the Aarhus Convention and is in line with the principle 10 of the Rio Declaration on Environment and Development, and the United Nations Millennium Development Goals (MDGs).

Strategy for Civil Society Engagement in the Protection of the Caspian Sea Marine Environment was presented at the COP3 in Aktau, Kazakhstan, 10–12 August 2011. It contains an analysis and a number of recommendations to improve access to information and participation in decision-making and action towards the implementation of the Tehran Convention and its Protocols at the local, national and regional levels.

We are pleased to announce the publication of the Proceedings of the Scientific Conference on the Climate Change in the Caspian Sea region. This collection includes all the abstracts selected by the Organizing Committee of the Conference. In addition, in the Proceedings you will find introductory words by key speakers of each section and welcome addresses from the guests of the Conference.

Scientific Conference on 27 and 28 October 2021 brought well over 80 leading scientists from the countries bordering the Caspian Sea together, to take stock and give a boost to research in the region underpinning the climate change policies and actions of Azerbaijan, IR Iran, Kazakhstan, Russian Federation and Turkmenistan.

The data of long-term ecological studies (1999–2014) are used for assessing the impact of a new Caspian invader Mnemiopsis leidyi A. Agassiz, 1865 on marine and anadromous fish species. The introduction of the ctenophore and its massive development in the Caspian Sea have mainly affected planktophagous fish, especially the most abundant species anchovy sprat (Clupeonella engrauliformis Borodin, 1904) and sturgeons (Family Acipenseridae). Mnemiopsis leidyi is one of the main negative factors preventing the restoration of the populations of Caspian fishes, especially anchovy tyulka. The critical state of the resources of the spawning parts of sturgeon populations (Family Acipenseridae) has been reinforced as a result of the massive development of M. leidyi.

In 2001 the initial Caspian Regional Stakeholder Analysis was commissioned with the objective of identifying major stakeholder groups, their interests and impact on the Caspian environment. Also identification of potential conflicts between stakeholder groups was a key task of the initial study. In summer 2004 this follow-up study was conducted in order to observe trends in stakeholder interests, perceptions and concerns as they pertain to activities of the Caspian Environment Programme.

Map of Tourism provided by Manana Kurtrubadze for the SOE (2018).

The main focus of review: To determine the Status of invasive species with special attention to the most aggressive invader Mnemiopsis leidyi in the Caspian Sea.

Objectives:

1. To assess vectors, pathways of invasive species introduction, their composition and their role in the Caspian ecosystem.

2. To analyze seasonal and interannual dynamics of the Mnemiopsis leidyi population in the all areas of the Caspian Sea; its impacts on the Caspian ecosystem including food recourses (zooplankton) and fish stocks along with other emerging environmental threats such as increased nutrient load from the coast, structural and quantitative changes in phyto-and-zooplankton communities, the appearance of harmful algal bloom (HAB) in the Southern Caspian.

3. To prepare recommendations for follow-up actions on invasive species management: - for the protection and control of the Caspian Sea from any sources of accidental invasive species introductions - for possibility of biological control of invader Mnemiopsis leidyi.

The primary source of this Review has been national reports from every of the five Caspian littoral countries, which included results of national observations of ecosystem state and biodiversity of the Caspian Sea. But due to fragmental data of the national observations on invasive species