Preston called the species left of the veil line—the invisible birds—those that are present at the site, but not seen by even a careful observer.
Perhaps land developers are poking fun at us
Managing to reduce the transport and arrival of alien species will not be cheap
Farms are no longer using cropland diversity to hedge their bets against pests, pathogens and drought.
The wall has costs—cultural costs for reductions in biodiversity that are the heritage of the desert Southwest.