TITLE:   A cross site study of microbial ectoenzyme activities and regulation:
         Preliminary results from the Palmer LTER component
AUTHORS: Stuart P. Donachie, Luis M. Tupas, Christopher J. Carrillo,
	 David M. Karl and James R. Christian
DATE:    1997 
Palmer LTER Contribution No. xxx
Antarctic Journal  of the United States, (submitted)

Abstract - 
The microbial loop is ubiquitous in marine and freshwater ecosystems
(Hobbie 1994) but dissimilar biotic and abiotic factors regulate its
components' activities in different habitats.  We have commenced a
cross-site project to investigate regulation of microbial ectoenzyme
expression and bacterial processes in polar and subtropical marine
habitats, sites represented respectively by the Palmer Long-Term
Ecological Research (LTER) grid (Waters and Smith 1992), and the
Hawaii Ocean Time-series (HOT) station ALOHA (A Long-Term Oligotrophic
Habitat Assessment) (Karl and Lukas 1996).