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HS005 – Simplified metadata

← Back to HS005 detail

Dataset

Database Code
HS005
Title
Nutrient and microbial characteristics of mountain stream fine benthic organic matter in the H.J. Andrews Experimental Forest, 1995 to 1996
Abstract
Numerous studies have examined qualitative shifts in leaf litter composition in the early to middle stages of decomposition. (Suberkropp, Godshalk and Klug 1976, Petersen and Cummins 1974, Findlay and Arsuffi 1989) which have shown that changes in leaf species and composition lead to marked differences in microbial processing rates (Suberkropp and Klug 1976) and that leaf and woody debris decomposition rates are related to both litter C:N and extracellular enzyme activities (Taylor et al. 1989, Sinsabaugh et al. 1992, Sinsabaugh and Linkins 1993). Since most organic matter moves through streams as fine particulate organic matter (FPOM) (Sinsabaugh et al. 1992) it is a potentially important link between terrestrial and aquatic environments. Although there is increasing interest in understanding FPOM dynamics, there have been few studies of factors influencing stream sediment FBOM chemical or microbial characteristics.
Keywords
communities; stream ecology; timber harvest; organic matter; forest ecosystems; aquatic ecosystems; streams; microbes; organic matter
Date begin
1995-08-09
Date end
1996-05-12
Principal Investigator
Robert P. Griffiths

Entities

  1. HS00501

1. HS00501 - Attribute list

HS00501 - attributes
Attribute Type Domain Minimum Maximum Unit
DBCODE varchar enum
ENTITY numeric(1) range 1.0000 1.0000 number
REFNAME varchar freetext
SAMPLEDATE datetime freetext
TREAT varchar enum
ELEV varchar enum
ASPEC varchar enum
RESPS numeric(0.010000) range 1.9800 213.4200 micrograms per gram per hour
DENPOT numeric(0.010000) range 0.0000 180.7000 micrograms per gram per hour
EXTR_AMM numeric(0.010000) range 0.0000 54.5200 micrograms per gram per day
MIN_N numeric(1.000000) range 0.0000 562.0000 micrograms per gram per day
N2FS numeric(0.100000) range 0.0000 7345.2002 micromoles per gram per hour
CARBOS numeric(1.000000) range 50.0000 773.0000 micrograms per gram per hour
ORGANICP numeric(0.001000) range -0.0100 3.4800 micrograms per gram per day
C_N_RATIO numeric(1.000000) range 11.0000 33.0000 number
BETAG numeric(0.010000) range 3.3600 396.1500 micromoles per gram per hour
PHOS numeric(0.100000) range 19.9000 490.7000 micromoles per gram per hour

Attribute definitions

ASPEC
Aspect
BETAG
Beta-glucosidase activity measured as p nitrophenol
CARBOS
Labile polysaccharides in mg glucose equivalents
C_N_RATIO
Total carbon to total nitrogen ratio
DBCODE
FSDB database code
DENPOT
Denitrification potential per gram dry wt.
ELEV
Elevation
ENTITY
Entity number
EXTR_AMM
Concentration of ammonium extracted with 2m KCl
MIN_N
Concentration ammonium after incubation at 40 deg c for 7 days
N2FS
Acetylene reduction as an indication of nitrogen fixation
ORGANICP
Organic phosphorus
PHOS
Phosphatase activity measured as p nitrophenol
REFNAME
Single letter designators for samples from undefined 1st order streams or watershed code for sediments from settling basins in watersheds in HJ Andrews Experimental Forest
RESPS
CO2 respired per gram dry wt. sediment-hr
SAMPLEDATE
Date samples collected
TREAT
Stand age

Enumerated domains

Enumerated domain for attribute: DBCODE

Codes for DBCODE
Code Description
HS005 FSDB database code HS005

Enumerated domain for attribute: TREAT

Codes for TREAT
Code Description
1 10-year stand
2 30-year stand
Old growth

Enumerated domain for attribute: ELEV

Codes for ELEV
Code Description
1 High
Low

Enumerated domain for attribute: ASPEC

Codes for ASPEC
Code Description
South
1 North