Biodiversity is not always top-down regulated

One can think of different ways that biodiversity can be regulated in the framework of food-webs or more generally networks of interactions:

  • Top-down: the effect of predation, hervibory, parasitism

  • Botton-up: food/nutrients

  • Disturbance:

In a more microscopic way could also have stabilizing influence or not

  • Trophic interactions

  • Competitive or negative interactions

  • Mutualistic or positive interactions

  • No interactions (Neutral)

  • Environment-species interactions

Hypothesis: The Diversity of Interaction Types have influence on the Community Stability

The community structure effect on population dynamics may not be correctly evaluated in the absence of interaction type-mixing information

However, empirical data on hybrid community interaction webs are limited.

A possible test of our hypothesis is to compare the composition of interaction types between different communities under varying levels of disturbance. An ecosystem under more-intensive disturbance is expected to have a more stabilizing composition of interaction types.

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Leonardo A. Saravia

Docente/Investigador de la @ungsoficial, Doctor en Biología de la UBA. Complex systems. Networks. Global Forest Fragmentation. Open science. R C++ & Python.

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