IBDP Environmental Systems & Societies Solutions Chapter 3 Notes

Biodiversity and Conservation


These notes have specially been curated by expert teachers to simplify and enlighten concepts given in IB ESS SL. The notes are comprehensive in nature and are sufficient to study the chapter in depth and one need not look for other resources beyond the notes provided on our website which can be accessed for free. The notes for Biodiversity and Conservation IBDP SL are available on our official website and can be downloaded for free. You are one click away from obtaining all that you need to score well in IB ESS SL.

The material made available on Tychr’s website is available for all IBDP subjects and is specially curated after an extensive amount of effort to ensure that the notes are in consonance with the IB curriculum and are an amalgamation from various textbooks prescribed by the IBO. Students often face a challenge understanding concepts, especially concepts that are new and tricky, these IB ESS Notes will help the student cover the chapter of Biodiversity and Conservation entirely while explaining every concept in a detailed and easy way.

The chapter on biodiversity and conservation begins with an introduction of biodiversity and the definition of terms like speciation, isolation, etc. The theory of evolution by Charles Darwin is examined. The chapter also sheds light on the concept of plate tectonics and thus the formation and destruction of land masses along with the causes and types of mass extinctions that occurred. Next, we talk about species, the rate of species loss and the reasons behind species loss- natural causes like volcanoes, drought, etc. and human causes like pollution, habitat destruction, etc.

The ecosystem is exploited in least economically developed countries to provide income and forests are cleared to make way for plantations. The IUCN (International Union of Conservation of Nature) provided the Red List that gives a detailed account of the species that are facing a risk of extinction or required conservation. It also provides us with a method to determine the conservation status of a species. Further, the chapter discusses the reasons behind the need to conserve the biodiversity be it aesthetic, ecological, ethical, economic or social. The role of NGOs and IGOs and the In Situ and Ex Situ methods of conservation in protected areas specially designed for this purpose along with the methods of designing are explained.