Jump to main content
US EPA
United States Environmental Protection Agency
Search
Search
Main menu
Environmental Topics
Laws & Regulations
About EPA
Health & Environmental Research Online (HERO)
Contact Us
Print
Feedback
Export to File
Search:
This record has one attached file:
Add More Files
Attach File(s):
Display Name for File*:
Save
Citation
Tags
HERO ID
1677559
Reference Type
Journal Article
Title
Biogeochemical patterns in a river network along a land use gradient
Author(s)
Kamjunke, N; Büttner, O; Jäger, CG; Marcus, H; von Tümpling, W; Halbedel, S; Norf, H; Brauns, M; Baborowski, M; Wild, R; Borchardt, D; Weitere, M
Year
2013
Is Peer Reviewed?
Yes
Journal
Environmental Monitoring and Assessment
ISSN:
0167-6369
EISSN:
1573-2959
Volume
185
Issue
11
Page Numbers
9221-9236
Language
English
PMID
23780728
DOI
10.1007/s10661-013-3247-7
Web of Science Id
WOS:000325116500034
Abstract
The Bode catchment (Germany) shows strong land use gradients from forested parts of the National Park (23 % of total land cover) to agricultural (70 %) and urbanised areas (7 %). It is part of the Terrestrial Environmental Observatories of the German Helmholtz association. We performed a biogeochemical analysis of the entire river network. Surface water was sampled at 21 headwaters and at ten downstream sites, before (in early spring) and during the growing season (in late summer). Many parameters showed lower concentrations in headwaters than in downstream reaches, among them nutrients (ammonium, nitrate and phosphorus), dissolved copper and seston dry mass. Nitrate and phosphorus concentrations were positively related to the proportion of agricultural area within the catchment. Punctual anthropogenic loads affected some parameters such as chloride and arsenic. Chlorophyll a concentration and total phosphorus in surface waters were positively related. The concentration of dissolved organic carbon (DOC) was higher in summer than in spring, whereas the molecular size of DOC was lower in summer. The specific UV absorption at 254 nm, indicating the content of humic substances, was higher in headwaters than in downstream reaches and was positively related to the proportion of forest within the catchment. CO2 oversaturation of the water was higher downstream compared with headwaters and was higher in summer than in spring. It was correlated negatively with oxygen saturation and positively with DOC concentration but negatively with DOC quality (molecular size and humic content). A principle component analysis clearly separated the effects of site (44 %) and season (15 %), demonstrating the strong effect of land use on biogeochemical parameters.
Keywords
TERENO; Land use; Nutrients; Heavy metals; DOC; Bode
Tags
IRIS
•
Arsenic Hazard ID
PubMed
Considered New
PubMed
WOS
Considered New
PubMed
Considered New
2. Lit Search Updates through Oct 2015
PubMed
WOS
Considered
7. Other Studies through Oct 2015
Non-Arsenic
•
Arsenic (Inorganic)
1. Literature
Lit search updates through Oct 2015
3. Hazard ID Screening
Other potentially supporting studies
Home
Learn about HERO
Using HERO
Search HERO
Projects in HERO
Risk Assessment
Transparency & Integrity