(Found) Novel series with ents and sentient bears

[Underground]

Probably published sometime in the mid-late 80's, it was a planet that humans had colonized that contained a species of sentient bear-like natives.

There was also a huge 100' tall plant creature with a diamond beak they called the ent that protected the forests. It was constantly attacking the cities humans had established with enormous walls just to keep them out.

The pesky colonists rebelled and were later attacked by space Marines.

And it turns out that the ents were created by the ancestors of the bears that now traveled the galaxy as beings of pure energy, and watched over their home planet.

And there was a native species of giant ant that turned out to not be native. But an invading species that the ancestors had modified to not be sentient and incorporate them into the local ecology.

I can remember a lot of details, but have not been able to think of the titles or author.

 

[Toby Frost]

In terms of space-bears, I can only think of The Right To Arm Bears by Gordon R Dickson, which I've not read but which has an epic title.

 

[Underground]

I agree that's an awesome title, but that's not the story I'm looking for.

 

[tachyon]

I think it's this one:

(Found) looking for the title of a book that featured sentient beetles and cat people

I read a lot of sci -fi in the 80's and 90's.and I would like to find a book I read back then. It mainly dealt with humans (Chinese if I remember rightly) who controlled 'chitin' which prolonged life and was only available on a planet which had huge trees where the beetle colonies (which...

www.sffchronicles.com

The War for Eternity by Christopher Rowley

 

[Underground]

Yes! That's it, thank you!