Article review: Positive feedback between chironomids and algae creates net mutualism between benthic primary consumers and producers (Sagae)
Blue-green algae are photosynthetic producers. Then, there are primary consumers in the ecosystem that feed on the producers. One of the hypotheses of my research is that blue-green algae are also used as a food resource by many organisms. From this hypothesis, it is natural to predict that algae may be decreasing due to feeding by consumers. However, an interesting phenomenon has been reported in aquatic ecosystems. Herren, 2017, suggests that the presence of primary consumers may increase the primary production of algae. In other words, the more food eating, the more food gets. This effect has been observed in the feeding and decomposition of benthic algae by larvae of the chironomid. At high densities, the larvae of the chironomid increased their secondary production. In my study, larvae of chironomids were collected and the data seem to show a relationship between algae. These surprising effects on the nutrient cycle may be the key to sustainable agriculture.
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