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Latest Soil food web Stories

Food Web Affected By Parasites More Than You Think
2013-06-19 10:15:07

University of California - Santa Barbara Parasites are ubiquitous. They feed on virtually every animal and even on each other. Yet, for all the parasites' collective contributions to biomass and biodiversity, conventional food webs don't account for the presence of these tiny and numerous consumers. A recent study featuring work by several UC Santa Barbara scientists focuses on the impact parasites have on food webs, with findings that are expected to alter our picture of who-eats-who. The...

2013-06-12 13:19:59

Parasites comprise a large proportion of the diversity of species in every ecosystem. Despite this, they are rarely included in analyses or models of food webs. If parasites play different roles from other predators and prey, however, their inclusion could fundamentally alter our understanding of how food webs are organized. In a paper published 11 June in the open access journal PLOS Biology, Santa Fe Institute Professor Jennifer Dunne and her team test this assertion and show that including...

Carnivorous Pitcher Plants Play Host To Complex Food Web
2013-04-03 09:00:17

Brett Smith for redOrbit.com - Your Universe Online At first glance, pitcher plants appear to be simple carnivorous plants that entrap and digest hapless insects that fall into them. However, a closer look reveals a complex food web of fly larvae, rotifers, midge larvae, and bacteria that exist within the plants´ pitcher. According to a new study by Harvard University, the predator-prey interactions among pitcher plant inhabitants provide an ideal model for understanding food webs...

A New Model For Understanding Biodiversity
2011-11-22 04:13:06

Researchers develop a unified theory of ecosystem change by combining spatial modeling and food web analysis Animals like foxes and raccoons are highly adaptable. They move around and eat everything from insects to eggs. They and other “generalist feeders” like them may also be crucial to sustaining biological diversity, according to a new study published this week in the Proceedings of the National Academy of Sciences (PNAS). McGill biology researchers have developed a...

2009-08-06 14:19:52

The findings, published in this week's issue of Science, conclude that food-web stability is enhanced when many diverse predator-prey links connect high and intermediate trophic levels. The computations also reveal that small ecosystems follow other rules than large ecosystems: differences in the strength of predator-prey links increase the stability of small webs, but destabilize larger webs.Natural ecosystems consist of interwoven food chains, in which individual animal or plant species...


Word of the Day
omadhaun
  • A fool; a simpleton: a term of abuse common in Ireland and to a less extent in the Gaelic-speaking parts of Scotland.
This word is partly Irish in origin.