Biodiversity can also destabilize ecosystems

ScienceDaily | 10/18/2018 | Staff
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The scientists specifically researched how biodiversity affects the stability of ecosystems. As model organisms, they used six species of ciliates -- tiny protozoans that live in water. The researchers put varying numbers and combinations of these ciliates in sample vials, thereby creating miniature ecosystems that they then let thrive at temperatures between 15 and 25 degrees Celsius. The increased temperatures simulated a climatic change, as the ciliates used in the experiment previously lived at a temperature of 15 degrees Celsius.

The researchers then used novel video evaluation techniques to analyze how stable the biomass production in these small ecosystems was. An algorithm developed by the team made it possible to identify the ciliate species in about 20,000 video sequences of the numerous samples recorded under a microscope.

Glance - Results - Experiment - Biodiversity - Furthers

At first glance, the results of the experiment seem contradictory: High biodiversity simultaneously furthers and hinders the stability of an ecosystem. "Ecological stability is complex and consists of various components," says Frank Pennekamp, first author of the study. "The experiment shows how...
(Excerpt) Read more at: ScienceDaily
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