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possible to selected groups of smaller organisms likely to display different
population traits and conservation needs. Inventories should be directed
from some of the best-established field laboratory sites, such as the tropical
forest stations on Barro Colorado Island, Panama, and La Selva in Costa
Rica, as well as the many local stations and field laboratories throughout
North America.
• Focus on selected groups of species for those physiological and genetic studies
most likely to identify the causes of population decline and extinction. Such
studies are also best conducted at well-established field laboratory sites.
• Select groups of organisms for studies of species linkages, the most basic level
of community organization, aimed at disclosing the reach of such linkages
and the nature of keystone species. Again, this kind of study is generally best
conducted at well-established field laboratory sites.
• Promote studies of ecosystem changes in natural habitats under assault, as
these changes affect community cohesion and threaten the safety of keystone
species.
Finally, given that this conceptual structure is close to the mark, the best way
to promote biodiversity studies and conservation would seem to be to strengthen
our experimental field stations and museums while promoting the very best studies
ranging from systematics to ecosystems analyses. Our brightest young people should
consider careers in biodiversity studies; our government and foundations should
promote their enterprise in the service of national interest. We already know what
needs to be done and the first important steps to take.
Now is the time to act.
B i o l o g i c a l
34 D i v e r s i t y