Flow intermittency decreases nestedness and specialisation of diatom communities in Mediterranean rivers

2013 ◽  
Vol 58 (12) ◽  
pp. 2555-2566 ◽  
Author(s):  
Elisabet Tornés ◽  
Albert Ruhí
Keyword(s):  
Mediterranean Rivers ◽  
Diatom Communities ◽  
Flow Intermittency

scholarly journals Anthropogenic flow intermittency shapes food-web topology and community delineation in Mediterranean rivers

2020 ◽  
Vol 105 (3-4) ◽  
pp. 74-84
Author(s):  
Ignacio Peralta-Maraver ◽  
Manuel Jesús López-Rodríguez ◽  
Anne L. Robertson ◽  
José Manuel Tierno de Figueroa
Keyword(s):  
Food Web ◽  
Mediterranean Rivers ◽  
Flow Intermittency

Extreme streams: flow intermittency as a control on diatom communities in meltwater streams in the McMurdo Dry Valleys, Antarctica1This article is derived from a special session entitled “A New Hydrology: Inflow Effects on Ecosystem Form and Functioning” that took place at the February 2011 ASLO Aquatic Sciences conference in San Juan, Puerto Rico.

2012 ◽  
Vol 69 (8) ◽  
pp. 1405-1419 ◽  
Author(s):  
Lee F. Stanish ◽  
Tyler J. Kohler ◽  
Rhea M.M. Esposito ◽  
Breana L. Simmons ◽  
Uffe N. Nielsen ◽  
...  
Keyword(s):  
Community Composition ◽  
Endemic Species ◽  
Mcmurdo Dry Valleys ◽  
Dry Valleys ◽  
Intermittent Streams ◽  
Diatom Community ◽  
Diatom Communities ◽  
Dry Valley ◽  
Flow Intermittency ◽  
Diatom Community Composition

In the McMurdo Dry Valleys of Antarctica, stream biota is limited by the brief availability of liquid water. The benthic microbial mats harbor diatoms that have adapted to hydrologic stresses, including numerous endemic species. We found a strong relationship between diatom community composition and flow intermittency in a data set including seven streams that spanned a gradient in flow intermittency. In particular, two genera represented by numerous endemic species in Dry Valley habitats, Hantzschia and Luticola , had high abundances in moderately and highly intermittent streams, respectively. The Shannon Index of diversity was greatest in streams with intermediate flow intermittency, with lower diversity in more stable streams resulting from lower evenness, and lower diversity in highly intermittent streams resulting from lower richness. These results indicate that multiple metrics of biodiversity may be useful in assessing the response of diatom communities to changing hydrologic regime. We propose that flow intermittency acts as a species filter that increases habitat heterogeneity in Dry Valley streams and may allow endemic species to persist. Future Antarctic warming may alter diatom community composition and habitats that act as refugia for desiccation-tolerant taxa.

Influence of glacial turbidity and climate on diatom communities in two Fjord Lakes (British Columbia, Canada)

2021 ◽  
Vol 83 (1) ◽  
Author(s):  
Kathleen R. Laird ◽  
Cécilia Barouillet ◽  
Brian F. Cumming ◽  
Christopher J. Perrin ◽  
Daniel T. Selbie
Keyword(s):  
British Columbia ◽  
Diatom Communities

scholarly journals Indicator taxa of benthic diatom communities: a case study in Mediterranean streams

2007 ◽  
Vol 43 (1) ◽  
pp. 1-11 ◽  
Author(s):  
E. Tornés ◽  
J. Cambra ◽  
J. Gomà ◽  
M. Leira ◽  
R. Ortiz ◽  
...  
Keyword(s):  
Benthic Diatom ◽  
Mediterranean Streams ◽  
Indicator Taxa ◽  
Diatom Communities

Effects of cadmium stress on periphytic diatom communities in indoor artificial streams

2003 ◽  
Vol 48 (2) ◽  
pp. 316-328 ◽  
Author(s):  
Caroline Gold ◽  
Agnès Feurtet-Mazel ◽  
Michel Coste ◽  
Alain Boudou
Keyword(s):  
Cadmium Stress ◽  
Artificial Streams ◽  
Diatom Communities ◽  
Periphytic Diatom

Diatom communities of acidic mountain streams in Poland

Hydrobiologia ◽  
1993 ◽  
Vol 269-270 (1) ◽  
pp. 335-342 ◽  
Author(s):  
Janina Kwandrans
Keyword(s):  
Mountain Streams ◽  
Diatom Communities
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