33 METADOMIX

Title

METADOMIX

Description

1. Study of landuse effects on dissolved organic matter chemistry and ecosystem metabolism (primary production, respiration) in a diverse cultural landscape of Central Europe. Hypothesis: Landuse affects metabolism and DOM chemistry, metabolism and DOM interact reciprocally. Approach: Single snapshot of DOM chemistry and diurnal oxygen (24 hours minimum with 2 consecutive nights, later inverse metabolism modelling) at streams along a landuse gradient.

2. Investigation of effects of mixing variously composed dissolved organic matter (and nutrients) at natural confluences on DOM biodegradation. Main hypothesis: Mixing of chemically differentiated water has non-additive influence on biodegradation (i.e. biodegradation below confluence cannot be predicted from tributaries). Approach: Collect water from naturally merging streams just before confluence, mix in lab according to observed discharge ratio and run 14-day biodegradation assays. Study biodegradation rates and changes of DOM composition during biodegradation assay.

 

Study site

Running water bodies

Sampling locations

Feldaist (48.33, 14.56)

Feldaist

location

48.33669, 14.56780

location

show on map center

code

2

description

Waldaist (48.33, 14.56)

Waldaist

location

48.33751, 14.56925

location

show on map center

code

3

description

Melk (48.14, 15.27)

Melk

location

48.1494, 15.2718

location

show on map center

type

state

code

1

description

Parameters

physics:

V

velocity

name

velocity

synonyms

speed, Geschwindigkeit

wt

water temperature

name

water temperature

description

determination by temperature-probe

synonyms

water temp, Wassertemperatur

chemistry:

DOC

C, DOC (dissolved organic carbon)

name

C, DOC (dissolved organic carbon)

description

0,45µm filtrated,   purging with hydrochloric acid, nondispersive infrared sensor  (NDIR) after combustion

synonyms

dissolved organic material (DOM), non-purgeable organic carbon (NPOC)

NO₃^--N

N, nitrate-nitrogen

name

N, nitrate-nitrogen

description

0,45µm filtrated, photometric determination

synonyms

NO3-N, NO3--N, nitrate, Nitrat

O₂

O, oxygen concentration

name

O, oxygen concentration

description

determination by oxygen-probe

synonyms

Sauerstoffkonzentration

SRP

P, (soluble reactive phosphorus)

name

P, (soluble reactive phosphorus)

description

0,45µm filtrated, photometric determination

synonyms

anorganischer gelöster Phosphor, ortho-Phosphat-P, DRP, DIP, inorganic soluble phosphorus, phosphate-phosphorus

Contact

Thomas Fuss, Gabriel Andreas Singer

Licence for data

All rights reserved. Please send a request to Thomas Fuss, Gabriel Andreas Singer if you like to use this data. Mind our data policy: IGB Data Policy

Metadata files

Machine Readable Metadata Files