The phrase 'a rich ecosystem' is correct and usable in written English.
You can use this phrase to refer to a natural environment with a large variety of plants and animals. For example, "The tropical rainforest is home to a rich ecosystem which supports many different species of flora and fauna."
Smartphones and tablets created a rich ecosystem of apps, unlocking new experiences for users.
Mutuals, joint ventures, social enterprises: all should be part of a rich ecosystem of public service providers.
There is a rich ecosystem across the region – forests and biodiversity above water, and precious coral reefs and aquatic life below – that is increasingly under threat.
Their rakes and chainmail nets smash the sessile life forms to pieces and quickly reduce a rich ecosystem to a sandy or muddy desert.
But this experiment has been conducted, at Langholm Moor, and it showed that you can have either a rich ecosystem or grouse shooting, but not both.
Global executives today are luckier than ever — a rich ecosystem of channels exists to promote the company's business strategy, greater purpose, and company story.
Researchers already are using the Frenetic software, and companies are interested in the technology because it enables "a richer ecosystem" of networking modifications, says Rexford.
Apple and Tandy each had a different strategy for creating a full, rich ecosystem.
The same relative impact (e.g., a PDF of 0.5) is considered equivalent in a species poor ecosystem and a species rich ecosystem, although in the latter case more species are lost.
A skyscraper from seafloor to surface apparently lends itself to a very rich ecosystem.
The answer to that is straightforward: it all depends on whether or not Google can offer users a sufficiently rich ecosystem of "web apps" – since those are the only kind that run on a Chromebook.
