#sedimentation — Public Fediverse posts

Messy Rivers Are Healthy Rivers - The Role Of Spatial Heterogeneity In Sustaining River Ecosystems -
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https://youtu.be/O2ys0y4SmcY?si=HMOczUg4SIebtCt0 <-- shared talk video
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https://cse.umn.edu/safl/events/messy-rivers-are-healthy-rivers-role-spatial-heterogeneity-sustaining-river-ecosystems <-- shared technical article
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https://www.safl.umn.edu <-- shared home page of the St. Anthony Falls Laboratory
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H/T @Ellen Wohl | @Colorado State University
“Perceptions of river health are strongly influenced by expectations regarding a natural river. Many observers expect clear water, a slightly sinuous river with pools and riffles, and some riparian trees. River health, however, is much more complicated and multifaceted. The physical appearance of a river, for example, depends strongly on geomorphic context and river history. [The H/T] use mountainous headwater rivers in Colorado to examine the influence of physical complexity on river health. Complexity can be described with respect to the stream bed, banks, cross-sectional form, and planform of the river and floodplain. The configuration of each of these components of a riverine system has implications for habitat abundance and diversity, sensitivity and resilience of the river to natural and human-induced disturbances, retention of water, sediment and nutrients, and connectivity within the riverine system and between the river and adjacent uplands. Many types of resource use simplify rivers to the point that the river undergoes a metamorphosis, or a thorough, sustained change in channel form and function. Loss of beaver dams and channel-spanning logjams in mountainous headwater rivers in Colorado, for example, has resulted in metamorphosis of physically complex, anastomosing channels that were highly connected to adjacent floodplains. These rivers have assumed an alternate stable state as single-thread channels with limited retention and resilience. Effective, sustainable river restoration involves (i) characterizing the magnitude of different forms of physical complexity naturally present in a particular river segment, (ii) understanding the effects of physical complexity on river ecosystem function, and (iii) assessing the degree to which this level of physical complexity can be restored or mimicked. An important part of this process may be educating stakeholders regarding the importance of physical complexity – messiness – in healthy rivers…”
#water #hydrography #hydrology #naturalsystems sinuosity #river #fluvial #healthy #riverine #ecology #ecosystems #waterquality #waterresources #GIS #spatial #mapping #heterogeneity #SpatialHeterogeneity #sustainability #riverhealth #hydrogeomorphology #headwater #example #Colorado #mountains #complexity #landform #floodplain #habitat #humanimpacts #sediment #sedimentation #nutrients #waterresources #natural #beaver #dams #wildlife #logjams #restoration #stakeholders #physicalcomplexity #messiness
@University of Minnesota | @st. Anthony Falls Laboratory

Oregon's Future Tidal Wetlands - Evaluating Potential Habitats, Human Impacts, & Adaptation
Collection
(Analytical tools to help identify areas in Oregon’s estuaries where proactive actions can be taken to prepare habitats and communities for sea level rise.)
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https://www.conservationgateway.org/collections/oregon/oregons-future-tidal-wetlands/ <-- shared technical report
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H/T @Pacific Marine and Estuarine Fish Habitat Partnership
“Practitioners can use the products from this report to identify areas within the Landward Migration Zones (LMZ) of Oregon estuaries where early action is likely to yield the greatest long-term benefits. Active restoration, along with land use planning that accommodates future tidal wetlands, can provide ecological function and help human communities adapt to sea level rise. To support these decisions, [the report's authors] integrated the LMZ data with additional spatial datasets describing the potential ecological functions of current and future estuary areas, as well as social and demographic information related to coastal hazard resilience, population density, and infrastructure distribution…”
#Oregon #USA #tidal #wetlands #habitat #ecosystem #humanimpacts #adaptation #sustainability #estuary #coast #coastal #sealevel #sealevelrise #SLR #LandwardMigrationZones #LMZ #ecology #environment #water #hydrology #hydrography #GIS #spatial #mapping #marine #ocean #social #demographics #risk #hazard #resilience #infrastructure #damage #soil #sediment #sedimentation #SEU #consequences #coastal #hazard #socialdata #socioeconomic #housing #transportation #decisiontree #hydrogeomorphology #elevation #watershed #SLR
@the Nature Conservancy in Oregon | @the Nature Conservancy