Download The Ecogeomorphology of Tidal Marshes by Sergio Fagherazzi, Marco Marani, Linda K. Blum PDF

By Sergio Fagherazzi, Marco Marani, Linda K. Blum

Published by means of the yank Geophysical Union as a part of the Coastal and Estuarine reports Series.

Salt marshes are coastal wetlands often inundated via tides. Given their strange features, salt marshes are colonized through salt-tolerant groups of crops (halophytes) tailored to saturated soil stipulations. plants has a major position not just in marsh ecology, but additionally for the hydrology and geomorphology of those environments. for instance, the suggestions among marsh elevation and crops is prime for the survival of salt marshes, rather while endangered via weather switch and sea-level upward push. nevertheless, the morphology of salt marshes and the methods that shape this strange panorama have a powerful impression at the ecosystem's functionality and structure.

Content:
Chapter 1 advent: the Coupled Evolution of Geomorphological and environment constructions in Salt Marshes (pages 1–4): S. Fagherazzi, M. Marani and L. okay. Blum
Chapter 2 Salt?Marsh plants and Morphology: simple body structure, Modelling and distant Sensing Observations (pages 5–25): Sonia Silvestri and Marco Marani
Chapter three distant Sensing of Tidal Networks and Their Relation to crops (pages 27–46): D.C. Mason and T. R. Scott
Chapter four Belowground creation and Decomposition alongside a Tidal Gradient in a Virginia Salt Marsh (pages 47–73): Linda ok. Blum and Robert R. Christian
Chapter five Tidal Networks: shape and serve as (pages 75–91): Andrea Rinaldo, Enrica Belluco, Andrea D'Alpaos, Alessandra Feola, Stefano Lanzoni and Marco Marani
Chapter 6 results of Low Tide Rainfall on Intertidal region fabric biking (pages 93–114): Raymond Torres, Miguel A. Goni,, George Voulgaris, Charles R. Lovell and James T. Morris
Chapter 7 Salt Marsh Microbial Ecology: Microbes, Benthic Mats and Sediment stream (pages 115–136): Rebecca J. Aspden, Suzanne Vardy and David M. Paterson
Chapter eight Vegetated circulate Dynamics (pages 137–163): H. M. Nepf
Chapter nine stream, Sedimentation, and Biomass construction on a Vegetated Salt Marsh in South Carolina: towards a Predictive version of Marsh Morphologic and Ecologic Evolution (pages 165–188): Simon Marius Mudd, Sergio Fagherazzi, James T. Morris and David Jon Furbish
Chapter 10 Geologic background and the Ergodic precept: Foundations for Long?Term Ecological study in Salt Marshes (pages 189–201): Leonard Robert Gardner
Chapter eleven Responses of Salt Marshes to Disturbance in an Ecogeomorphological Context, with a Case research of Trampling by means of Deer (pages 203–230): M. A. Keusenkothen and R. R. Christian
Chapter 12 Dynamics of Tidal Salt Barren Formation and the list Of Present?Day Sea point swap (pages 231–245): Yuch Ping Hsieh
Chapter thirteen Ecogeomorphology of Spartina Patens?dominated tidal marshes: Soil natural topic accumulation, marsh elevation dynamics, and disturbance (pages 247–266): Donald R. Cahoon, Mark A. Ford and Philippe F. Hensel

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Extra resources for The Ecogeomorphology of Tidal Marshes

Example text

Drainagedensityis MASON AND TABLE 1. Site River Ems SCOTT LiDAR 37 data characteristics LiDAR wavelength(g) and network extraction accuracies. 5 14 42 Venice Lagoon importantparameterdescribingthe degreeof dissectionof terrain by surfacestreamsand is definedasthe ratio of the total drainagelengthLx to the watershedareaA. , 1999a]. The measurements of Lx andA were determinedfor each possiblechannelcross-section and its associatedwatershedin the network using an automatictechniquebasedon the conceptdevelopedby Rinaldo et al.

7 ....... : ........ :-Z.? ' (e) 34 REMOTE SENSING OF TIDAL NETWORKS edgemaximaare thenthresholdedusinghysteresisthresholdingandthinnedto singlepixel width (Figure 2b). Hysteresisthresholdinghelps to fill in gaps of lower edge strength pixelsbetweenrunsof higheredgestrengthpixels,giving a more continuousedge. Edge detectionof a tidal channelwill generatetwo anti-paralleledgesfrom either side of it. This is achievedby generatingthe distancetransform of the edgeimage,in which a pixel' s valueis its distancefrom the nearestedge,with distancesbeingzero at edgepixels(Figure 2c).

Tidal channelson salt marshesinfluencethe vegetationgrowingaroundthem. g. , 1998]. They also act as barriersfor drainagefrom the marsh,and so can lead to waterloggedsoil and thus reducedvegetationgrowth in the inner regionsof the marsh [Carter, 1988]. On tidal flats, channelmovements may be quite rapid due to the lack of vegetation,but within the marshthey are generally much slower,due in part to the binding and strengtheningrole played by the plant roots [Allen, 2000]. A numberof geomorphological factshave been establishedand theoriesproposed.

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