With all due respect, are not we all invaders at some point in time? Best,
Manuel Spínola 2011/9/10 David L. McNeely <[email protected]> > ---- 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 > > > > -- *Manuel Spínola, Ph.D.* Instituto Internacional en Conservación y Manejo de Vida Silvestre Universidad Nacional Apartado 1350-3000 Heredia COSTA RICA [email protected] [email protected] Teléfono: (506) 2277-3598 Fax: (506) 2237-7036 Personal website: Lobito de río <https://sites.google.com/site/lobitoderio/> Institutional website: ICOMVIS <http://www.icomvis.una.ac.cr/>
