Ecosystem

An ecosystem is a system where organisms interact with their environment. It includes living things, like plants and animals, and non-living parts, such as soil, water, and air. These parts are connected through nutrient cycles and energy flows. For example, plants use photosynthesis to turn sunlight into food, and animals help move energy by eating plants and each other.

Ecosystems are always changing. They can be affected by things like climate and processes such as decomposition. Even when disturbed, ecosystems can recover and reorganize. Studying ecosystems helps us understand nature and how to protect it.

Ecosystems provide many benefits to people, including clean water, food, and medicines like medicinal plants. However, human activities such as soil loss, water pollution, and habitat fragmentation can harm ecosystems. Protecting and restoring these systems is important for the health of our planet and for achieving the Sustainable Development Goals.

Definition

An ecosystem is a group of living things and the places where they live, all working together. This includes plants, animals, and tiny organisms, along with the air, water, and soil they need.

The idea of an ecosystem was first introduced in 1935 by a scientist named Arthur Tansley. He wanted to show how important it is to look at both the living things and their environment as one connected system. Later scientists studied how energy moves through ecosystems.

Processes

Ecosystems are made up of living things and their environment working together. They include plants, animals, tiny organisms, soil, water, and air. These parts are connected through cycles of nutrients and flows of energy.

Ecosystems are influenced by both outside and inside factors. Outside factors, like climate and soil type, set the basic rules for how an ecosystem works. Inside the ecosystem, processes like plant growth and decay help control how resources are used. These interactions help the ecosystem stay balanced and function properly.

Study approaches

See also: Ecosystem model

Ecosystem ecology is the study of how living things and their surroundings work together. Ecosystems can be very small, like the area on a rock, or very large, covering the whole planet.

Scientists study ecosystems in many ways. They can watch ecosystems over long periods, compare different ecosystems, or do experiments to see how they change. These studies can happen at different sizes, from looking at an entire forest to studying tiny, simplified versions of ecosystems. Researchers have done important work, like studying how acid rain affects forests.

Biomes are big groups of ecosystems that share similar conditions, like forests, grasslands, or tundra. These biomes change based on the world's climate. Scientists also classify ecosystems in other ways, such as how humans affect them or how they mix with human activities. Each way of grouping ecosystems helps us understand them better.

Human interactions with ecosystems

Humans are part of almost all ecosystems. What we do can change these ecosystems and even affect the climate.

Ecosystems give us many useful things, like water, food, and medicines. They also help keep our air clean and our soil healthy. Some services are things we often don’t think about, like how plants help pollinate crops. Many of these services are important.

Unfortunately, human activities can harm ecosystems. Pollution, climate change, and losing plant and animal species are big problems. Protecting and caring for ecosystems helps us keep enjoying the benefits they provide.