As our population approaches 7 billion people, the effects of human activities on the ecosystem, including the water, air, land and the life that we share the world with, are almost immeasurable. Pollution Humans pollute the land, water and air with unwanted refuse. In some countries, the smog caused by air pollution is deadly and can block out the sun in a dense haze. Humans produce about million tons of plastic each year.
Any other sub-ecosystem falls under one of these two headings. Terrestrial ecosystems Terrestrial ecosystems can be found anywhere apart from heavily saturated places.
They are broadly classed into: The Forest Ecosystems They are the ecosystems in which an abundance of flora, or plants, is seen so they have a big number of organisms which live in relatively small space. Therefore, in forest ecosystems the density of living organisms is quite high.
A small change in this ecosystem could affect the whole balance, effectively bringing down the whole ecosystem. You could see a fantastic diversity in the fauna of the ecosystems, too.
They are further divided into: These are tropical forests that receive a mean rainfall of 80 for every inches annually. The forests are characterised by dense vegetation which comprises tall trees at different heights. Each level is shelter to different types of animals. There, shrubs and dense bushes rule along with a broad selection of trees.
The type of forest is found in quite a few parts of the world while a large variety of fauna and flora are found there. Those have quite a few number of trees as mosses and ferns make up for them. Trees have developed spiked leaves in order to minimize transpiration. The forest is located in the moist temperate places that have sufficient rainfall.
Summers and winters are clearly defined and the trees shed the leaves during the winter months. Situated just before the arctic regions, the taiga is defined by evergreen conifers.
As the temperature is below zero for almost half a year, the remainder of the months, it buzzes with migratory birds and insects. The Desert Ecosystem Desert ecosystems are located in regions that receive an annual rainfall less than They occupy about 17 percent of all the land on our planet.
Due to the extremely high temperature, low water availability and intense sunlight, fauna and flora are scarce and poorly developed.
The vegetation is mainly shrubs, bushes, few grasses and rare trees. The stems and leaves of the plants are modified in order to conserve water as much as possible.
The best known desert ones are the succulents such as the spiny leaved cacti. The animal organisms include insects, birds, camels, reptiles all of which are adapted to the desert xeric conditions. The Grassland Ecosystem Grasslands are located in both the tropical and temperate regions of the world though the ecosystems vary slightly.
The area mainly comprises grasses with a little number of trees and shrubs.
The main vegetation includes grasses, plants and legumes that belong to the composite family. A lot of grazing animals, insectivores and herbivores inhabit the grasslands.
The two main kinds of grasslands ecosystems are: The tropical grasslands are dry seasonally and have few individual trees. They support a large number of predators and grazers.
It is temperate grassland, completely devoid of large shrubs and trees. Prairies could be categorized as mixed grass, tall grass and short grass prairies.
The Mountain Ecosystem Mountain land provides a scattered and diverse array of habitats where a large number of animals and plants can be found. At the higher altitudes, the harsh environmental conditions normally prevail, and only the treeless alpine vegetation can survive.Water, health and ecosystem linkages.
Most of the earth's surface is covered by water, and most of the human body is composed of water – two facts illustrating . Unit 4: Ecosystems ph-vs.com organisms in ecosystems are connected in complex relationships, it is not always easy to anticipate how a step such as introducing a new species will affect the rest of an ecosystem.
An ecosystem is a community made up of living organisms and nonliving components such as air, water, and mineral soil. Ecosystems can be studied in two different ways.
They can be thought of as interdependent collections of plants and animals, or as structured systems and communities governed by general rules.
. An aquatic ecosystem is an ecosystem in a body of water. Communities of organisms that are dependent on each other and on their environment live in aquatic ecosystems.
The two main types of aquatic ecosystems are marine ecosystems and freshwater ecosystems. Effects of water pollution. You will notice in the previous pages that water pollution is very harmful to humans, animals and water life.
The effects can be catastrophic, depending on the kind of chemicals, concentrations of the pollutants and where there are polluted. There are two main types of aquatic ecosystem - Marine and Freshwater. The Marine Ecosystem Marine ecosystems are the biggest ecosystems, which cover around 71% of Earth's surface and contain 97% of out planet's water.