Browsing Tag

Biology

A tangled food web

Trophic levels are an 'insufficient' measure of sustainability for today's aquaculture policy Born in food web ecology, the concept of trophic levels -- the hierarchy of who eats who in the natural world -- is an elegant way to understand…

A cat of all trades

Credit: Photo by Brutus Östling Large carnivores are generally sensitive to ecosystem changes because their specialized diet and position at the top of the trophic pyramid is associated with small population sizes. This in turn leads…

Rare bee found after 100 years

Rainforest degradation, wildfire reducing speciesCredit: James Dorey Photography A widespread field search for a rare Australian native bee not recorded for almost a century has found it's been there all along - but is probably…