Numerous ecosystem services in the ecosystem systems are contributed by them. For example, they are excellent natural decomposers, key biological indicators of a healthy ecosystem, source of protein and minerals etc.


Because of their relatively long life cycles, high reproductive rates, and variable genetic expression macroinvertebrates have become a global research effort for a green environment.

Natural Decomposers:  They break down organic material like dead or decaying bacteria, plants, and animals into forms of energy in ecosystems which helps recycle nutrients back into the system.  Apart from aquatic plants, aquatic macroinvertebrates consume algae are most abundant in the summer when algae production is at its highest. Terrestrial macroinvertebrates play a significant role in the trophic dynamics of agricultural ecosystems.    Yet, no advanced research was found in this field.

Biological Indicators: They are highly sensitive to pollution. Consequently, they are excellent indicators of environmental health, particularly that of aquatic bodied. For example, larvae of spiny crawler mayflies (family Ephemerellidae) have a tolerance value of 1 and can dwell only in the most pristine environments.

Different groups of macroinvertebrate communities have particular requirements to survive. The recent approaches in biological indicators, by the use of macroinvertebrates, have shown interesting results. In the marine ecosystem, benthic macroinvertebrates are commonly used as indicators of ecosystem health. The bioindicators have been successfully used for the assessment of the ecosystem in various developed countries. Benthic macroinvertebrates are the group most commonly used as bioindicators through all European countries. Few research works were conducted in multiple water bodies on a climatic regional scale.

Responses to climate change:  Climate change will exert great impacts on global ecosystems. Several studies on global change result that these negative impacts would also have consequences for species phenology, their distribution range, and the composition and dynamics of communities. Alba-Tercedor et al. (2017) stated that the distribution area of most of the taxa (65.96%) inhabiting the mid-high elevations would contract and rise in altitude. Thus, families containing a great number of generalist species will move upstream to colonize new zones with lower water temperatures. By contrast, about 33% of aquatic insects in macroinvertebrates are under threatened; more vulnerable taxa will undergo reductions in their distribution area. Undoubtedly, Bangladesh has been considered one of the countries most affected by climate change impacts. Due to climate change, the stability of ecosystems can be disrupted in several ways. Recent studies indicate the importance of the conservation of aquatic macroinvertebrates. These negative trends lead significantly to habitat destruction of country available macroinvertebrates. There is a lack of information about the reliability of climate change responding.

Food and Feed: They are significant linkers in the food web between the producers and higher consumers especially in the freshwater ecosystem. As a result, macroinvertebrates are economically important as human food sources through their direct consumption and provide an important food source for fish and other predators as well.

Income Generating: Freshwater invertebrates also provide aesthetic benefits (e.g., freshwater pearls) to humans.

Nevertheless, macroinvertebrates can be important vectors of human disease.  Currently, the global study concludes that macroinvertebrate-based companies are now being established and becoming profitable and moving into international markets. In Bangladesh, very few attempts were made to perform research and development works on macroinvertebrates. A preliminary survey carried out between 1996-97 found abundant coral resources presence of economically important macro-invertebrates such as sponges, gastropods, sea urchins, sea cucumbers and other rare endangered species stated by Rear Admiral M Khaled Iqbal.
Therefore, there are more opportunities for research and commercialization of the groups. However, macroinvertebrate-based commercialization requires a high degree of confidence and safety

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