Did you know that there are indicator species of water, air and soil pollution? Used in the complex world of Ecology to evaluate environmental disturbances, the presence or absence of bioindicator species allows researchers to know if a study habitat has a greater or lesser risk of contamination. Indirectly, bioindicator plants and animals help to evaluate, regulate and even rectify those disturbances that humans cause in the planet's ecosystems.
In this interesting article by Ecologist Verde you will find all the information you need to learn more about what are indicator species and examples of these.
Within the world of ecology, indicator species are those recognized for their characteristics and abilities to indicate sensitivity and disturbance to contaminants, being used as possible units for estimating the status of other species or environmental conditions that, as a general rule, are difficult (and even expensive) to measure directly. That is why the interest in the use of indicator species in ecological studies is of great relevance, facilitating both quantitative and qualitative analyzes, at regional, national and even international scales. When it comes to knowing how indicator species are classified, It is convenient to differentiate them into three large groups, according to the use that is given to them within the world of ecology:
They are strongly related to particular environmental conditions, so their presence indicates the existence of said condition, being useful, for example, to evaluate the presence of pollutants or toxic substances in the environment. Given their function, they are also known as indicator species of ecological health.
Its function lies in detecting and interpreting changes in the population dynamics of other species with which they share natural habitat and with which they probably maintain some type of interspecific ecological relationship, such as predator-prey trophic relationships or symbiosis, among others. Here you can read about the trophic relationships of ecosystems: definition and examples and What is symbiosis in ecology with examples.
The latter type of indicator species facilitate understanding of the species richness that characterizes a given natural area. These species are characterized by a wide distribution, counting on specialist habitats, as well as the ease of being studied by ecologists to interpret the results of fauna and / or floristic richness of the species or groups of species with which they coexist.
In the next sections we will see concrete examples of these curious species so useful for the world of ecology and the understanding of the functioning of natural habitats.
Between the indicator animals we find species that belong to the different groups of animals that exist on the planet, since both invertebrates and vertebrates may be capable of becoming bioindicators of great ecological relevance. Thus, among the main bioindicator species of fauna we find:
Among the diverse and surprising functions that plants perform for the correct functioning of the different ecosystems of the planet, the role as biondicators that they play in both aquatic and terrestrial habitats stands out, without a doubt.
Now, while the bioindicator species of animals allow to indicate variations in environmental conditions, population and / or biodiversity, in the case of plants, these are characterized by being able to indicate environmental changes (generally pollution) and changes in floristic biodiversity associated with a specific ecosystem or region, defining, for example, the characteristic fauna of a specific desert or forest. Let's look at some concrete examples of indicator plants that we can find throughout the planet, as well as the type of bioindication attributed to it within the world of ecology:
Now that you know all this about indicator species, you may be interested in continuing to learn about this topic and read this other article about Environmental Bioindicators, their types, how they are used and more.
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