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danielalejandro_mcna

Created on December 8, 2023

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Transcript

Environmental

DIMENSION

Content

Ecosystems

Biomes and Biosphere

Trophic chains

Biodiversity

Biogeochemical cycles

What is an ecosystem?

Geographic area where different organisms, along with weather and landscape interact with each other

Biotope

Biocenosis

Ecosystems are not isolated entities, they are coupled by energy and matter flows

All the ecosystems are connected with each other. The union of various ecosystems is called BIOME

Biomes are organized based on the plants or animals that live in there.

Ecosystems are not static

Functions of Ecosystems

  1. Regulates essential ecological processes, suports life systems and renders stability
  2. Cycling of matter and energy
  3. Balance the trophic levels

Energy in the Ecosystem

The primary source of energy is the solar energy

Energy

Matter

Solar energy is captured by plants which will be transformed into chemical energy through photosynthesis

Trophic levels

  • Food chain is a series of organisms that will eat one another.
  • Organized in categories known as trophic levels

Decomposers

There are three kinds of food chain:

  1. Grazing food chain: common food chain
  2. Saprophytic food chain: the decaying matter is the lowest level and is followed by the decomposers
  3. Parasitic food chain: large organisms are exploited and the energy passes to a smaller one.

Food webs

  • Graphical representation of the interconnection between food chains.
  • Arrows follow the flow of energy (where the energy is being transferred)

Food webs

And the flow of matter in the environment?

Biogeochemical cycles

Homework (OneNote)

BIODIVERSITY

The total amount of genes, species and ecosystems of a particular region

BIODIVERSITY in MEXICO

Mexico is placed 4th worldwide between the megadiverse countries

Info

Tundra

Grasslands

Biome

Desert

Large geographical area defined by its vegetations, water, climates, soil and wildlife

Aquatic

Forests

Biosphere

Biosphere

Made up of all the parts of the Earth that contains life. From the bottom of the ocean to the highest mountaintop

Lithosphere

Hydrosphere

Scientists describe the Earth in terms of spheres

Atmosphere

Life can develop on air, water and soil, that is why the biosphere can measures about 20 Km. Almost all life exists between 500 m under sea level to 6 Km above it

Atmosphere

Lithosphere

Hydrosphere