Geomorphometric floodplain classification in a hill region of Hungary

Lóczy, Dénes; Pirkhoffer, Ervin; Gyenizse, Péter

doi:10.1016/j.geomorph.2011.06.040

Cited by 23 publications

(24 citation statements)

References 37 publications

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“…High biodiversity is shaped and influenced by geomorphology through controlling ecosystem processes (Renschler et al ., ). Hydrogeomorphological patches (Thorp et al ., ) are associated with catchment and valley geomorphology and flow characteristics, which can be studied and described with concepts and techniques of physical geography, for example catchment properties (Church, ; Orr et al ., ), valley parameters (Lóczy et al ., ) under natural conditions and also human activities, for example channelization, dams or land use (Apan et al ., ; Allan, ; Nakamura et al ., ). In turn, riverbank and floodplain geomorphology is also shaped by plants, as discussed in details in publications (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…To this end, a quantitative description of the patch pattern of vegetation is presented, followed by a multivariate analysis of the linkages of these ecological memory‐coding objects with abiotic (hydrogeomorphological) variables on the example of the floodplain of a medium size river of Southwest Hungary, the Kapos, using a detailed geomorphological typology of floodplain reaches (Lóczy et al ., ) and vegetation types obtained from the Landscape Ecological Database of Hungarian Habitats (MÉTA) (Molnár et al ., ).…”

Section: Introductionmentioning

confidence: 99%

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Wetland Habitat Patches as Ecological Components of Landscape Memory in a Highly Modified Floodplain

Ortmann‐Ajkai

Lóczy

Gyenizse

et al. 2013

River Research & Apps

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Landscape memory and ecological memory are relatively new concepts developed independently in geomorphology and ecology. Eco-geomorphology strives to enrich the concept of landscape memory with that of ecological memory, as ecosystems build inherent parts of landscapes and are controlled by geomorphological factors. This integration is illustrated by a small-scale eco-geomorphological case study of links between ecosystems and their hydrogeomorphological template, in the floodplain of a medium size Hungarian River. Despite that the river is channelized by 1835 and most of the study area is under intensive agricultural cultivation, the seminatural vegetation along the various reaches shows significant variations according to geomorphological background variables: detrended correspondence analysis yields results of p = 0.002 significance. Our results prove that geomorphological patterns in floodplains, defined by landscape memory, and the related vegetation patterns, as manifestations of ecological memory, jointly determine the face of floodplain landscapes. The integration of ecological memory into the definition of landscape memory may help meet the challenges of eco-geomorphology and facilitate a holistic understanding of landscapes, and thus be instrumental for reconstructing past environments-both in theory (scientific research) and practice (rehabilitation projects).

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Wetland Habitat Patches as Ecological Components of Landscape Memory in a Highly Modified Floodplain

Ortmann‐Ajkai

Lóczy

Gyenizse

et al. 2013

River Research & Apps

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“…Geológiai és szedimentológiai értelemben az ártér azt a meder mentén fekvő területet jelenti, amelyet folyóvízi üledékek borítanak (Hudson 2003). Tájökológiai szempontból az ártér olyan, a mederhez kapcsolódó, főként vizes élőhelyeket jelentő zóna, amely gyakran ökológiai folyosóként működik (Lóczy et al 2012).…”

Section: Az áRtér Fogalmaunclassified

“…Mivel az árterek formálódása alapvetően a kialakító folyó energiaviszonyaitól, hidrológiai és morfológiai tulajdonságaitól függ, ezért osztályozásuk nehezen választható külön a folyómedrek tipizálásától (Wolman és Leopold 1957, Lóczy et al 2012. Ezt jól mutatja, hogy az egyes medertípusok elkülönítéséhez gyakran az árterek paramétereit (pl.…”

Section: Az áRterek Osztályozási Lehetőségeiunclassified

“…Szintén geomorfológiai alapú, de több tényezőt is figyelembe vesz Lóczy et al (2012) osztályozási rendszere, akik az árterek felosztásához olyan morfológiai jellemzőket vettek alapul, mint az ártér szélessége, az üledékek kötöttsége, a völgyi korlátozottság, a medermintázat és az esés. Ezek alapján számították ki az ún.…”

Section: Az áRterek Osztályozási Lehetőségeiunclassified

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Késő-pleisztocén és holocén ártérfejlődés az Alsó-Tisza mentén

Hernesz

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River‐valley morphology, basin size, and flow‐event magnitude interact to produce wide variation in flooding dynamics

2019

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Inundation dynamics are a key driver of ecosystem form and function in river-valley bottoms.Inundation itself is an outcome of multi-scalar interactions and can vary strongly within and among river reaches. As a result, establishing to what degree and how inundation dynamics vary spatially both within and among river reaches can be challenging. The objective of this study was to understand how river-valley morphology, basin size, and flow-event magnitude interact to affect inundation dynamics in river-valley bottoms. We used 2D hydraulic models to simulate inundation in four river reaches from Maryland's Piedmont physiographic province, and qualitatively and quantitatively summarized within-and amongreach patterns of inundation extent, duration, depth, shear stress, and wetting frequencies. On average, reaches from confined valley settings experienced less extensive flooding, shorter durations and shallower depths, stronger gradients of maximum shear stress, and relatively infrequent wetting compared to reaches from unconfined settings. These patterns were generally consistent across flow-event magnitudes. Patterns of within-reach flooding across event magnitudes revealed complex interactions between hydrology and surface topography. We concluded that valley morphology had a greater impact on flooding patterns than basin size: Inundation patterns were more consistent across reaches of similar morphology than similar basin size, but absolute values of inundation characteristics varied between large and small basins. Our results showed that the manifestation of out-of-bank flows in valley floors can vary widely depending on geomorphic context, even within a single physiographic province, which suggests that hydrologic and hydraulic conditions experienced on the valley floor may not be well represented by existing hydrologic metrics derived from discharge data alone. We thus support the notion that 2D hydraulic models can be useful hydrometric tools for cross-scale investigations of floodplain ecosystems.

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Geomorphometric floodplain classification in a hill region of Hungary

Cited by 23 publications

References 37 publications

Wetland Habitat Patches as Ecological Components of Landscape Memory in a Highly Modified Floodplain

Wetland Habitat Patches as Ecological Components of Landscape Memory in a Highly Modified Floodplain

Késő-pleisztocén és holocén ártérfejlődés az Alsó-Tisza mentén

River‐valley morphology, basin size, and flow‐event magnitude interact to produce wide variation in flooding dynamics

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