Patrick Curry's "Ecological ethics" isn't a neutral introduction to the subject, but rather a partisan pitch for his own brand of Green philosophy. Curry combines the Deep Green Theory of Richard Sylvan with classical republicanism and communitarianism (suitably Greened). He also has a soft spot for Earth-centred spirituality which doesn't seem to fit neatly with his "pluralist" and secularized attitude in ethics. Perhaps Curry is what Bron Taylor would call a naturalist animist?
The book discusses and critiques animal liberation, deep ecology and Gaia Theory. It's more well disposed to ecofeminism and Aldo Leopold's Land Ethic. For some reason, Curry also discusses Left Biocentrism, a very obscure current within Deep Ecology. Murray Bookchin is hardly even mentioned.
"Ecological ethics" contains a short introduction to ethics in general, a chapter on the ecological crisis (for cornucopians only?) and a scathing criticism of those who still deny the overpopulation problem. For a short book, it covers surprisingly lot of ground.
As already mentioned, this isn't a neutral textbook but really a politico-philosophical tract made in Patrick Curry. However, it could be of interest to Dark Green-watchers.