---- Matt Chew <[email protected]> wrote: > We can compose effectively endless lists of cases where human agency has > redistributed biota and thereby affected pre-existing populations, > ecological relationships and traditional or potential economic > opportunities. Those are indisputable facts.
The House Sparrow is in North America by human hand. > But what those facts mean is disputable. House sparrows are in serious decline in Europe, probably as an unintended consequence due to human actions. > > I see effects; they see impacts. > I see change; they see damage. Many people see a need to eradicate non-natives. At the same time, many people see a need to preserve natives. With regard to the house sparrow ------ hmmm......... . Where does the "arms race" that Matt mentioned further along in his post lead? mcneely >
