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Long-term changes in the size of the Pomphorhynchus laevis (Acanthocephala) population in the River Avon

✍ Scribed by C. R. Kennedy; A. Rumpus

Book ID
110775630
Publisher
John Wiley and Sons
Year
1977
Tongue
English
Weight
541 KB
Volume
10
Category
Article
ISSN
0022-1112

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Long-term changes in concentrations and
Long-term changes in concentrations and flux of nitrogen in the Mississippi River Basin, USA
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## Abstract Current and historical data show that nitrogen concentrations and flux in the Mississippi River Basin have increased significantly during the past 100 years. Most of the increase observed in the lower Mississippi River has occurred since the early 1970s and is due almost entirely to an