Tag Archives: Åland

The Key Component

Host availability drives the spatiotemporal dynamics of interaction metapopulations across a fragmented landscape (2020) Opedal et al. 2020, Ecology. https://doi.org/10.1002/ecy.3186

Image Credit: Ferran Turmo Gort, CC BY-NC-SA 2.0, Image Cropped

The Crux

Ecology is all about understanding how biotic and abiotic factors interact within environments. Biotic factors are those that involve living organisms such as prey availability/resource abundance (i.e., the availability of food and resources?), competitor density, or predator density. Abiotic factors, however, are those that involve non-living aspects of the environment, such as rainfall or temperature. Studying how these various factors interact with one another allows researchers to better understand how and why ecological dynamics vary across a changing landscape.

One really cool thing about ecological dynamics is that they can play out across trophic levels, meaning something happening at the level of the resource (such as grass) can then result in changes at a higher trophic level, such as that of the consumer (deer) or predator (wolf). While there has been an enormous amount of work dedicated to understanding how these species interactions affect the species involved, much less is known about how these dynamics play out across a natural landscape. Today’s authors used a well-known model system (see Did You Know?) to study just that.

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