Long-term monitoring efforts associated with the Luquillo LTER research program. Legend: B = Bisley, E = El Verde, R = Rio Blanco, L = Landslides, LEF = other areas in the Luquillo Experimental Forest.
|
Measure |
Initiation |
Funding |
Location |
Frequency |
|
METEOROLOGY |
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|
Rainfall |
197519871994 |
NSF/DOEUSFS, MELLON |
E, B, R, LEF |
Hourly and daily totals with Level 3 Stations, Daily NOAA records to turn of century |
|
Temperature (air and soil) |
1975, 19871994, 1997 |
NOAA, NSF, USFS, USGS, MELLON |
E, B, R, LEF 12 stations |
Hourly and daily totals with Level 3 Stations, vertical profiles at E, LEF transect |
|
Humidity, wind speed and direction |
1988, 1994 |
NSF,USFS, USGS, MELLON |
B, E, R, LEF 6 stations |
Continuous measurement with Level 3 Stations and vertical profiles at El Verde |
|
Light (PAR, total radiation, Albedo) |
1988, 1994, |
NSF, USFS, USGS |
E, B, LEF |
Continuous measurements at 4 stations |
|
All parameters |
1997 |
NSF/NASA |
LEF |
12 additional weather stations throughout LEF |
|
HYDROLOGY |
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|
Stream discharge |
1945 |
USGS, USFS |
LEF |
Daily discharge, 18 historical streams, 12 currently active |
|
Throughfall |
1987 1997 |
USFS NSF/NASA |
B, LEF |
Daily and weekly in Bisley, 8 LEF transects sampled 2-4 wks |
|
CHEMISTRY (major cations and anions) |
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|
Rain |
1983, 1988 |
NSF, NADPNSF |
E, B |
Bulk and wet-only; weekly samples for major ions |
|
Throughfall |
1988, 19941997 |
UPR/NSFNSF/NASA |
B, E, LEF |
Weekly composites at B, E Eight transects throughout LEF sampled every 2-4 weeks |
|
Streamwater |
198319881997 (DON) |
UPR/NSFNSFNSF/NASA |
B, E, LEFLEF |
Weekly samples from 8 long-term streams, Periodic sampling of 13 more streams |
|
Litterfall |
1989, 1994 |
NSF, USFS, |
B, E, LEF |
2 week sampling |
|
Groundwater, soil water, soil oxygen |
1988, 1994 |
NSF, USFS, Mellon, USGS |
LEF |
Weekly to periodic |
|
VEGETATION |
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|
Forest Structure and Composition (i.e. density, composition, biomass) |
1988 |
NSF, USFS, Mellon |
B, E, LEF |
1-5 year intervals |
|
Belowground biomass |
1988 |
NSF, MELLON |
B, E |
Yearly |
|
Canopy structure and Leaf Area index |
1989 |
NSF |
E, B |
Every 3 years |
|
Seedling dynamics |
1989 |
NSF, USFS |
B, E |
Monthly to yearly |
|
Flowering phenology |
1989 |
NSF, USFS |
B, E, |
Weekly |
|
Litterfall, litter decomposition |
1987, 1994, 1996 |
NSF, USFS |
B, E, L, LEF |
Two week litter collections, LTER LIDET project |
|
Landslide revegetation |
1988 |
NSF |
LEF |
Every 6 months to Yearly |
|
Abandoned Pasture Revegetation |
1996 |
NSF |
LEF |
Yearly |
|
FAUNA |
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|
Key species inventory |
1988 |
NSF |
E, B |
Yearly |
|
DISTURBANCE |
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|
Inventory of gaps, landslides, and stream channel change |
1988 |
NSF,USFS, USGS |
B, R, LEF |
Yearly to periodic |