Biodiversity and Ecosystem
Biodiversity refers to the wide variety of life found on Earth, including animals, plants, microorganisms, and the natural systems that support them. It encompasses genetic variation within species, the richness of species themselves, and the diversity of ecosystems such as forests, grasslands, wetlands, deserts, and marine areas. Ecosystems are networks in which organisms interact with one another and with their physical surroundings. These systems provide essential services that sustain life, making biodiversity and ecosystems vital for maintaining ecological balance and supporting human progress.
The value of biodiversity extends far beyond its ecological importance. It offers cultural, economic, and social benefits that are central to human well-being. Healthy ecosystems regulate the climate, reduce the spread of disease, filter water, and support crop pollination. They also secure food, improve nutrition, and sustain livelihoods by supplying natural resources such as timber, fuel, and medicinal plants. In addition to these practical contributions, biodiversity has educational, scientific, and recreational significance, making it an essential foundation for sustainable development.
Global awareness of the need to conserve biodiversity and ecosystems has developed over decades. At the 1992 Earth Summit in Rio de Janeiro, conservation was emphasized in Agenda 21 (Chapter 15). During the same summit, the Convention on Biological Diversity (CBD) was opened for signature and eventually signed by 168 nations before June 1993. The Convention came into force on 29 December 1993, after it was ratified by 30 states. The first Conference of the Parties (COP) was held in the Bahamas in late 1994, setting the stage for coordinated international action on biodiversity loss.
In 2002, the World Summit on Sustainable Development in Johannesburg highlighted biodiversity once again. The Johannesburg Plan of Implementation (Chapter IV, paragraph 44) endorsed a target to significantly slow the rate of biodiversity loss by 2010 at global, regional, and national levels. This goal, already agreed upon earlier that year at the sixth meeting of the CBD COP, connected biodiversity protection with poverty reduction and the safeguarding of life on Earth. The Summit recognized that biodiversity was not only an environmental matter but also a driver of social equity and long-term development.
The Rio+20 Conference in 2012 further strengthened international commitments. Its outcome document, The Future We Want, dedicated paragraphs 197–204 to biodiversity, affirming its ecological, cultural, scientific, and economic value. Member States acknowledged that biodiversity supports critical ecosystem services necessary for survival and development. The document also highlighted the global risks posed by biodiversity loss and ecosystem degradation, particularly their effects on food supply, water resources, nutrition, and health, with rural and vulnerable communities facing the greatest challenges.
The Future We Want also emphasized the need to fully implement the Strategic Plan for Biodiversity 2011–2020 and to achieve the Aichi Biodiversity Targets, which were adopted at the tenth meeting of the CBD COP. These measures sought to address the causes of biodiversity loss, strengthen conservation, and promote the sustainable use of ecosystems. During the 2012–2013 session of the United Nations Commission on Sustainable Development, biodiversity was one of the central themes, reaffirming its importance at the international policy level.
As part of the 2030 Agenda for Sustainable Development, biodiversity and ecosystems are prioritized in Sustainable Development Goal 15 (SDG 15). This goal aims to conserve terrestrial ecosystems, ensure sustainable forest management, prevent desertification, and reverse land degradation and biodiversity loss. By embedding biodiversity within the global development framework, SDG 15 underlines that protecting ecosystems is not only an environmental responsibility but also a necessity for economic resilience, social stability, and the well-being of future generations.