Geomorphic Approach to Regional Sediment Management in Engineered and Restored Fluvial Systems

2001 ◽  
Author(s):  
Colin R. Thorne ◽  
Kevin S. Skinner
Keyword(s):  
Sediment Management ◽  
Fluvial Systems

Pathway Ranking for In-place Sediment Management (CU1209). Site 2 Report - Pearl Harbor

2006 ◽  
Author(s):  
Bart Chadwick ◽  
Vikki Kirtay ◽  
Amy Blake ◽  
Ernie Arias ◽  
Bradley Davidson ◽  
...  
Keyword(s):  
Sediment Management ◽  
Pearl Harbor

Pathway Ranking for In-place Sediment Management (CU1209). Executive Summary and Site 1 Report -- Paleta Creek

2006 ◽  
Author(s):  
D. B. Chadwick ◽  
Vikki Kirtay ◽  
Amy Blake ◽  
Ernie Arias ◽  
Bradley Davidson ◽  
...  
Keyword(s):  
Sediment Management ◽  
Executive Summary

THE RATE OF URBANIZATION AND VARIATION IN IMPACTS TO FLUVIAL SYSTEMS

2017 ◽  
Author(s):  
Rebecca Anne Tisherman ◽  
◽  
Daniel J. Bain
Keyword(s):  
Fluvial Systems

IMPACTS OF HUMAN INTERVENTIONS IN FLUVIAL SYSTEMS: OBSERVATIONS FROM THE EDENVILLE DAM DISASTER IN CENTRAL MICHIGAN

2020 ◽  
Author(s):  
Nathan A. Niemi ◽  
◽  
Adda Athanasopoulos-Zekkos ◽  
Cassandra Champagne ◽  
Marin K. Clark ◽  
...  
Keyword(s):  
Fluvial Systems ◽  
Human Interventions

scholarly journals Fluvial Geomorphology and River Management

Water ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1608
Author(s):  
Salvatore Ivo Giano
Keyword(s):  
Human Activities ◽  
River Restoration ◽  
Fluvial Geomorphology ◽  
Landscape Evolution ◽  
River Management ◽  
Special Issue ◽  
Fluvial Systems ◽  
The Impact

This Special Issue deals with the role of fluvial geomorphology in landscape evolution and the impact of human activities on fluvial systems, which require river restoration and management [...]

scholarly journals Biotic and Abiotic Factors Influencing Arsenic Biogeochemistry and Toxicity in Fluvial Ecosystems: A Review

2020 ◽  
Vol 17 (7) ◽  
pp. 2331
Author(s):  
Laura Barral-Fraga ◽  
María Teresa Barral ◽  
Keeley L. MacNeill ◽  
Diego Martiñá-Prieto ◽  
Soizic Morin ◽  
...  
Keyword(s):  
Abiotic Factors ◽  
Arsenic Exposure ◽  
Inorganic Arsenic ◽  
Future Research ◽  
Strong Impact ◽  
Trophic Relations ◽  
Fluvial Systems ◽  
Pampean Streams ◽  
Micro Organisms ◽  
Different Origins

This review is focused on the biogeochemistry of arsenic in freshwaters and, especially, on the key role that benthic microalgae and prokaryotic communities from biofilms play together in through speciation, distribution, and cycling. These microorganisms incorporate the dominant iAs (inorganic arsenic) form and may transform it to other arsenic forms through metabolic or detoxifying processes. These transformations have a big impact on the environmental behavior of arsenic because different chemical forms exhibit differences in mobility and toxicity. Moreover, exposure to toxicants may alter the physiology and structure of biofilms, leading to changes in ecosystem function and trophic relations. In this review we also explain how microorganisms (i.e., biofilms) can influence the effects of arsenic exposure on other key constituents of aquatic ecosystems such as fish. At the end, we present two real cases of fluvial systems with different origins of arsenic exposure (natural vs. anthropogenic) that have improved our comprehension of arsenic biogeochemistry and toxicity in freshwaters, the Pampean streams (Argentina) and the Anllóns River (Galicia, Spain). We finish with a briefly discussion of what we consider as future research needs on this topic. This work especially contributes to the general understanding of biofilms influencing arsenic biogeochemistry and highlights the strong impact of nutrient availability on arsenic toxicity for freshwater (micro) organisms.

scholarly journals An Integrated Coastal Sediment Management Plan: The Example of the Tuscany Region (Italy)

2020 ◽  
Vol 8 (1) ◽  
pp. 33 ◽  
Author(s):  
Enzo Pranzini ◽  
Irene Cinelli ◽  
Luigi E. Cipriani ◽  
Giorgio Anfuso
Keyword(s):  
Stability Index ◽  
Management Plan ◽  
Sediment Management ◽  
Coastal Sediment ◽  
National Guidelines ◽  
Management Actions ◽  
Erosion Processes ◽  
Human Effects ◽  
Sufficient Magnitude ◽  
Sound Management

This paper presents the results of a study carried out to support the Region of Tuscany Coastal Sediment Management Plan, with the main aim of establishing the sediment budget considering the time span from 1981–1985 to 2005 for the 56 coastal sectors into which the 215 km-long continental sandy coast of Tuscany (Italy) was divided. The sand stability (according to a stability index) and colour compatibility (according to the CIEL*a*b* colour space with an acceptability range conforming to national guidelines) were determined in order to assess the possibility of using the available sediment in accreting sectors to nourish the beach in eroding areas. Only in two cases—i.e., the updrift of a harbour (at Viareggio) and in a convergence zone (at Marina di Pietrasanta)—are the volumes of sufficient magnitude to support a large nourishment project; however, the mean sand size is too small to guarantee efficient nourishment, even with medium-term stability. In contrast, the colour difference, in most of the cases, was shown to be acceptable. Other small sediment stocks, suitable for colour but not for grain size, can be used for periodic ephemeral nourishment works to support seasonal tourist activities. The limited resources available make it necessary to adopt a plan for their optimal use from a regional perspective. This kind of study is of great interest for the proposal of sound management actions to counteract the increasing erosion processes linked to climate change phenomena and human effects on rivers and coastal systems.

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