We analyze the direct pressures on biodiversity change: habitat change, overexploitation, exotic species, pollution, and climate change. We discuss the underlying causes, such as demographic growth and resource use, and review existing scenario projections.
What causes change in biodiversity?
Biodiversity change is caused by a range of drivers. A driver is any natural or human-induced factor that directly or indirectly causes a change in an ecosystem. … Important direct drivers affecting biodiversity are habitat change, climate change, invasive species, overexploitation, and pollution (CF4, C3, C4.
What are the changes and threats to biodiversity?
The most important pressures on biodiversity and ecosystem services are habitat change (such as land use changes, physical modification of rivers or water withdrawal from rivers, and loss of coral reefs), climate change, invasive species, overexploitation, and pollution.
What are the 5 factors that affect biodiversity?
Biodiversity loss is caused by five primary drivers: habitat loss, invasive species, overexploitation (extreme hunting and fishing pressure), pollution, climate change associated with global warming. In each case, human beings and their activities play direct roles.
What are types of biodiversity?
Types of Biodiversity. Biodiversity includes three main types: diversity within species (genetic diversity), between species (species diversity) and between ecosystems (ecosystem diversity).
What are the 4 types of biodiversity?
Four Types of Biodiversity
- Species Diversity. Every ecosystem contains a unique collection of species, all interacting with each other. …
- Genetic Diversity. Genetic diversity describes how closely related the members of one species are in a given ecosystem. …
- Ecosystem Diversity. …
- Functional Diversity.
What are the 6 main threats to biodiversity?
6 Main Threats to Biodiversity – Explained!
- Human Activities and Loss of Habitat: …
- Deforestation: …
- Desertification: …
- Marine Environment: …
- Increasing Wildlife Trade: …
- Climate Change:
What biodiversity means?
Biodiversity is the shortened form of two words “biological” and “diversity”. It refers to all the variety of life that can be found on Earth (plants, animals, fungi and micro-organisms) as well as to the communities that they form and the habitats in which they live.
What has the greatest impact on biodiversity?
Historically, habitat and land use change have had the biggest impact on biodiversity in all ecosystems, but climate change and pollution are projected to increasingly affect all aspects of biodiversity.
What are uses of biodiversity?
Ecological life support— biodiversity provides functioning ecosystems that supply oxygen, clean air and water, pollination of plants, pest control, wastewater treatment and many ecosystem services. Recreation—many recreational pursuits rely on our unique biodiversity , such as birdwatching, hiking, camping and fishing.
What is class 11 biodiversity?
In simple terms, biodiversity is the number and variety of organisms found within a specified geographic region. … It relates to the variability among living organisms on the earth, including the variability within and between the species and that within and between the ecosystems.
What are the features of biodiversity?
Major components in biodiversity are ecosystem diversity, species diversity and genetic diversity.