NSF Org:	DEB Division Of Environmental Biology
Recipient:	UNIVERSITY OF WISCONSIN SYSTEM
Initial Amendment Date:	December 17, 1990
Latest Amendment Date:	March 28, 1996
Award Number:	9011660
Award Instrument:	Continuing Grant
Program Manager:	Scott L. Collins DEB  Division Of Environmental Biology BIO  Directorate for Biological Sciences
Start Date:	January 1, 1991
End Date:	October 31, 1997 (Estimated)
Total Intended Award Amount:	$4,359,827.00
Total Awarded Amount to Date:	$4,359,827.00
Funds Obligated to Date:	FY 1991 = $454,749.00 FY 1992 = $550,500.00 FY 1993 = $614,453.00 FY 1994 = $1,706,694.00 FY 1995 = $18,306.00 FY 1996 = $1,015,125.00
History of Investigator:	John Magnuson (Principal Investigator) jmagnuson@macc.wisc.edu David Armstrong (Co-Principal Investigator) Carl Bowser (Co-Principal Investigator) Stephen Carpenter (Co-Principal Investigator) Timothy Kratz (Co-Principal Investigator)
Recipient Sponsored Research Office:	University of Wisconsin-Madison 21 N PARK ST STE 6301 MADISON WI  US  53715-1218 (608)262-3822
Sponsor Congressional District:	02
Primary Place of Performance:	University of Wisconsin-Madison 21 N PARK ST STE 6301 MADISON WI  US  53715-1218
Primary Place of Performance Congressional District:	02
Unique Entity Identifier (UEI):	LCLSJAGTNZQ7
Parent UEI:
NSF Program(s):	INSTRUMENTAT & INSTRUMENT DEVP, LONG-TERM PROJCTS IN ENVIR BIO, LONG TERM ECOLOGICAL RESEARCH, LONG-TERM RSCH IN ENVIR BIO
Primary Program Source:	app-0193  app-0194  app-0195  app-0196
Program Reference Code(s):	1124, 1129, 9169, 9178, 9189, 9232, 9251, EGCH, ENVI, SMET
Program Element Code(s):	110800, 112900, 119500, 119600
Award Agency Code:	4900
Fund Agency Code:	4900
Assistance Listing Number(s):	47.074

ABSTRACT

Long-Term Ecological Research on north temperate lakes is a comprehensive study of seven lakes and the surrounding landscape in northern Wisconsin. The study is designed to answer research questions spanning longer time and broader space scales than typical of ecological research. Thus, it is especially relevant to analyzing global change and regionalizing site specific knowledge. There are five interrelated research areas: 1) perception of long-term trends, 2) interactions among physical, chemical, and biological processes, 3) temporal responses to disturbance and stress, 4) relation between spatial heterogeneity and temporal variability, and 5) generalization of results to a landscape scale. A comprehensive data collection and management system is in place to address these areas and make data available to the broader scientific community. Climatic, hydrologic, and terrestrial forcing on lakes is analyzed along with internal processes determining the dynamics of biogeochemical cycling, production, and species abundances. Disturbances/stresses being evaluated include species invasions, climate warming, and acidic precipitation. Spatial heterogeneity and scale are studied as influences on temporal variation in, and perceptions of, lake systems. Spatially explicit models of regional hydrology and water quality are being implemented. Dynamics of lakes are compared with other ecosystems types, inside and outside the LTER network.

Please report errors in award information by writing to: awardsearch@nsf.gov.