Nitrogen fixation and phosphatase activity in periphyton growing on nutrient diffusing substrata: evidence for differential nutrient limitation in stream periphyton

2009 ◽  
Vol 28 (1) ◽  
pp. 57-68 ◽  
Author(s):  
J. Thad Scott ◽  
David A. Lang ◽  
Ryan S. King ◽  
Robert D. Doyle
Keyword(s):  
Nitrogen Fixation ◽  
Nutrient Limitation ◽  
Phosphatase Activity ◽  
Stream Periphyton ◽  
Nutrient Diffusing Substrata

scholarly journals Effect of nutrient limitation on biofilm formation and phosphatase activity of a Citrobacter sp.

Microbiology ◽  
2002 ◽  
Vol 148 (1) ◽  
pp. 277-288 ◽  
Author(s):  
Victoria J. M Allan ◽  
Maureen E Callow ◽  
Lynne E Macaskie ◽  
Marion Paterson-Beedle
Keyword(s):  
Nutrient Limitation ◽  
Phosphatase Activity ◽  
Biofilm Formation

Conversion of tropical forests to agriculture alters the accrual, stoichiometry, nutrient limitation, and taxonomic composition of stream periphyton

2019 ◽  
Vol 104 (5-6) ◽  
pp. 116-126 ◽  
Author(s):  
Flavia Tromboni ◽  
Christine Lourenço-Amorim ◽  
Vinicius Neres-Lima ◽  
Steven A. Thomas ◽  
Monalisa Silva-Araújo ◽  
...  
Keyword(s):  
Nutrient Limitation ◽  
Tropical Forests ◽  
Taxonomic Composition ◽  
Stream Periphyton

Nutrient diffusing substrata: a field comparison of commonly used methods to assess nutrient limitation

2011 ◽  
Vol 30 (2) ◽  
pp. 522-532 ◽  
Author(s):  
Krista A. Capps ◽  
Michael T. Booth ◽  
Sarah M. Collins ◽  
Marita A. Davison ◽  
Jennifer M. Moslemi ◽  
...  
Keyword(s):  
Nutrient Limitation ◽  
Nutrient Diffusing Substrata

Nutrient limitation of algal growth and nitrogen fixation in a tropical alpine lake, Lake Titicaca (Peru/Bolivia)

1985 ◽  
Vol 15 (2) ◽  
pp. 185-195 ◽  
Author(s):  
W. A. WURTSBAUGH ◽  
W. F. VINCENTR ◽  
R. ALFARO TAPIA ◽  
C. L. VINCENT ◽  
P.J. RICHERSON
Keyword(s):  
Nitrogen Fixation ◽  
Nutrient Limitation ◽  
Algal Growth ◽  
Alpine Lake ◽  
Lake Titicaca ◽  
Tropical Alpine

Salmon subsidies alleviate nutrient limitation of benthic biofilms in southeast Alaska streams

2011 ◽  
Vol 68 (2) ◽  
pp. 277-287 ◽  
Author(s):  
Janine Rüegg ◽  
Scott D. Tiegs ◽  
Dominic T. Chaloner ◽  
Peter S. Levi ◽  
Jennifer L. Tank ◽  
...  
Keyword(s):  
Nutrient Limitation ◽  
Fold Increase ◽  
N:P Ratio ◽  
Community Respiration ◽  
Ammonium Concentration ◽  
Resource Subsidies ◽  
Southeast Alaska ◽  
P Limitation ◽  
Autotrophic Biofilms ◽  
Nutrient Diffusing Substrata

Using nutrient-diffusing substrata (NDS) in seven streams in southeast Alaska, USA, we tested whether (i) nutrient limitation of autotrophic and heterotrophic biofilms was alleviated by salmon resource subsidies, and (ii) whether the degree of alleviation could be predicted by environmental variables. Before salmon spawners arrived, autotrophic biofilms were nitrogen (N)-limited, or co-limited by N and phosphorus (P), whereas heterotrophic biofilms were either P-limited, or co-limited by N and P. Combined N and P amendments resulted in a 2.6-fold increase in biofilm chlorophyll a, and a 3.2-fold increase in community respiration. After salmon arrived, autotroph nutrient limitation was alleviated in six of the seven streams. Heterotrophs still exhibited nutrient limitation in six streams, but most streams shifted from co-limitation to P-limitation. Nutrient-diffusing substrata amended with salmon tissue indicated that salmon could also be an important source of organic carbon for biofilms. Autotrophs responded less to N and P amendments as streamwater ammonium concentration increased with the arrival of salmon. For heterotrophs, ammonium concentration and N:P ratio best predicted changes in response following the arrival of salmon. We provide the first direct evidence that biofilm nutrient limitation can be alleviated by salmon spawners in nutrient-poor streams.

scholarly journals Nutrient limitation of terrestrial free-living nitrogen fixation

2017 ◽  
Vol 217 (3) ◽  
pp. 1050-1061 ◽  
Author(s):  
Katherine A. Dynarski ◽  
Benjamin Z. Houlton
Keyword(s):  
Nitrogen Fixation ◽  
Nutrient Limitation ◽  
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