First up this weekend is an interesting post at Science Notes about the three invasive swallow-worts (Cynanchum spp.) that are problems in North America. Wait...three? Holy cow, there's a white one too! News to those of us who have only heard of the black and pale species.
Also this week, leporidae uses her LiveJournal page to show everyone that some species are invasive, and some are just annoying native ones.
Finally, the cane toad blogging continues here and here, but the best post of them all has to be the one from no fat clips! about the hysterical animated short called "Cane-Toad: What Happened to Baz?" A Must See! (warning: contains adult language)