Stream regulation and nitrogen dynamics in sediment interstices: comparison of natural and straightened sectors of a third-order stream

2004 ◽  
Vol 20 (5) ◽  
pp. 499-512 ◽  
Author(s):  
S. Lefebvre ◽  
P. Marmonier ◽  
G. Pinay
Keyword(s):  
Nitrogen Dynamics ◽  
Third Order ◽  
Order Stream

Retention and Transport of Nutrients in a Third-Order Stream: Channel Processes

Ecology ◽  
1989 ◽  
Vol 70 (6) ◽  
pp. 1877-1892 ◽  
Author(s):  
Frank J. Triska ◽  
Vance C. Kennedy ◽  
Ronald J. Avanzino ◽  
Gary W. Zellweger ◽  
Kenneth E. Bencala
Keyword(s):  
Stream Channel ◽  
Channel Processes ◽  
Third Order ◽  
Order Stream

In Situ Retention-Transport Response to Nitrate Loading and Storm Discharge in a Third-Order Stream

1990 ◽  
Vol 9 (3) ◽  
pp. 229-239 ◽  
Author(s):  
Frank J. Triska ◽  
Vance C. Kennedy ◽  
Ronald J. Avanzino ◽  
Gary W. Zellweger ◽  
Kenneth E. Bencala
Keyword(s):  
Third Order ◽  
Order Stream ◽  
Transport Response

Microbiological water quality of a temperate third-order stream

2019 ◽  
Vol 30 (2) ◽  
pp. 417-426 ◽  
Author(s):  
Maria Soledad Rodriguez ◽  
Melina Celeste Crettaz-Minaglia ◽  
Diamela Gianello ◽  
Mercedes Piaggio
Keyword(s):  
Water Quality ◽  
Third Order ◽  
Order Stream ◽  
Microbiological Water Quality

Retention and Transport of Nutrients in a Third-Order Stream in Northwestern California: Hyporheic Processes

Ecology ◽  
1989 ◽  
Vol 70 (6) ◽  
pp. 1893-1905 ◽  
Author(s):  
Frank J. Triska ◽  
Vance C. Kennedy ◽  
Ronald J. Avanzino ◽  
Gary W. Zellweger ◽  
Kenneth E. Bencala
Keyword(s):  
Third Order ◽  
Order Stream

scholarly journals Rapid and Stable Microbial Community Assembly in the Headwaters of a Third-Order Stream

2019 ◽  
Vol 85 (11) ◽  
Author(s):  
Morgan E. Teachey ◽  
Jacob M. McDonald ◽  
Elizabeth A. Ottesen
Keyword(s):  
Microbial Community ◽  
Microbial Diversity ◽  
Community Assembly ◽  
Fine Scale ◽  
Third Order ◽  
Order Stream ◽  
Bacterioplankton Community ◽  
Small Streams ◽  
Temporal And Spatial ◽  
Over Time

ABSTRACTSmall streams and their headwaters are key sources of microbial diversity in fluvial systems and serve as an entry point for bacteria from surrounding environments. Community assembly processes occurring in these streams shape downstream population structure and nutrient cycles. To elucidate the development and stability of microbial communities along the length of a first- through third-order stream, fine-scale temporal and spatial sampling regimes were employed along McNutt Creek in Athens, GA, USA. 16S rRNA amplicon libraries were constructed from samples collected on a single day from 19 sites spanning the first 16.76 km of the stream. To provide context for this spatial study and evaluate temporal variability, selected sites at the stream’s upper, mid, and lower reaches were sampled daily for 5 days preceding and following the spatial study. In a second study, three sites at and near the creek’s headwaters were sampled daily for 11 days to understand initial bacterioplankton community assembly. Both studies revealed decreasing alpha and beta diversity with increasing downstream distance. These trends were accompanied by the enrichment of a small fraction of taxa found at low abundance in headwater-proximal sites. Similar sets of taxa consistently increased in relative abundance in downstream samples over time scales ranging from 1 day to 1 year, many of which belong to clades known to be abundant in freshwater environments. These results underpin the importance of headwaters as the site of rapid in-stream selection that results in the reproducible establishment of a highly stable community of freshwater riverine bacteria.IMPORTANCEHeadwater streams are critical introduction points of microbial diversity for larger connecting rivers and play key roles in the establishment of taxa that partake in in-stream nutrient cycling. We examined the microbial community composition of a first- through third-order stream using fine-scale temporal and spatial regimes. Our results show that the bacterioplankton community develops rapidly and predictably from the headwater population with increasing total stream length. Along the length of the stream, the microbial community exhibits substantial diversity loss and enriches repeatedly for select taxa across days and years, although the relative abundances of individual taxa vary over time and space. This repeated enrichment of a stable stream community likely contributes to the stability and flexibility of downstream communities.

Structure, functional organization and biological traits of macroinvertebrate assemblages from leaf-bags and benthic samples in a third-order stream of Central Apennines (Italy)

2014 ◽  
Vol 46 ◽  
pp. 84-91 ◽  
Author(s):  
Antonio Di Sabatino ◽  
Giovanni Cristiano ◽  
Maurizio Pinna ◽  
Paola Lombardo ◽  
Francesco Paolo Miccoli ◽  
...  
Keyword(s):  
Functional Organization ◽  
Biological Traits ◽  
Third Order ◽  
Central Apennines ◽  
Order Stream ◽  
Macroinvertebrate Assemblages ◽  
Leaf Bags

scholarly journals Brook trout (Salvelinus fontinalis) response to wood removal from high-gradient streams of the Adirondack Mountains (N.Y., U.S.A.)

2003 ◽  
Vol 60 (4) ◽  
pp. 379-389 ◽  
Author(s):  
Dana R Warren ◽  
Clifford E Kraft
Keyword(s):  
Brook Trout ◽  
Salvelinus Fontinalis ◽  
Woody Debris ◽  
Second Order ◽  
Adirondack Mountains ◽  
Stream Order ◽  
Third Order ◽  
Order Stream ◽  
First Order ◽  
Linear Contrasts

A before–after, control–impact study was conducted to evaluate brook trout (Salvelinus fontinalis) response to the removal of debris dams and woody debris from an ice-storm-impacted stream system in the eastern Adirondack Mountains in New York State. A total of 10 reach pairs were established on two first-order streams, two second-order streams, and one third-order stream, all within the same watershed. Analyses, conducted separately for each stream order, used linear contrasts to compare differences in trout abundance between reference (upstream) and removal (downstream) reaches 1 month and 1 year after the manipulation. We expected trout abundance to decrease in removal reaches relative to reference reaches; however, responses varied temporally and with respect to stream order. Trout abundance had not changed significantly 1 month after removal. One year after removal, relative trout abundance had increased in the third-order stream, decreased in the second-order streams, and exhibited no significant change in the first-order streams. In areas with abundant boulders and preexisting habitat complexity, accumulated woody debris may have limited influence on trout abundance.

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