The oceans comprise the world's largest ecosystem, and cyanobacteria single-celled organisms that get their energy through photosynthesis—are the keystone group.
Frogs are a keystone group in the food web dynamics of many of the world's ecosystems.
I'm an insect ecologist, and I've spent much of my career working with pollinators -- a keystone group of organisms that help maintain the fabric of our ecosystems.
In aquatic environments, heterotrophic flagellates (HF) form a keystone group in the transfer of picoeukaryotic carbon to higher trophic levels [1], [2].
These limitations underline the need to develop new nuclear markers in order to further resolve the phylogeny of this keystone group in chordate evolution.
Lumbricids and enchytraeids are two keystone fauna groups strongly responsible for the functioning of detrital food webs in temperate soils but acting at contrasting spatial scales.
"The importance of environmental concerns are at the top of why I'm a Democrat," said Bill Burton, a former top Obama campaign aide and White House spokesman who works for the All Risk, No Reward Coalition, an alliance of anti-Keystone environmental groups.
By improving our understanding of the diversity of Neotropical ants, a keystone ecological group, we can advance our knowledge of the causes that maintain biodiversity in exceptionally rich Neotropical habitats.
The developers of the Keystone Building, a group of four commercial structures dating back to the early 20th century that is being converted to condominium lofts, say they have reaped the benefits of a fashionable TriBeCa location, but without the constraints of owning a landmark.
In 2008, Keystone convened a group of 40 food executives, academics, health advocates and government officials to develop the program's nutrition guidelines.
