Hydrologic and morphologic changes in channels of the Platte River basin: A historical perspective

Eschner, T. R.; Hadley, Richard F.; Crowley, Kevin D.

doi:10.3133/ofr811125

Cited by 57 publications

(87 citation statements)

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“…Stream substrates may be altered by the construction of dams, irrigation canals, and water diversions all of which have occurred in the Platte River system (Eschner et al 1981). However, in our tests the presence of leaf detritus, in which the caddisflies could burrow, did not increase survival when exposed to brook stickleback (Table 2).…”

Section: Discussioncontrasting

confidence: 46%

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Two New Geographic Distribution Records for the Brook Stickleback, Culaea inconstans (Gastrosteiformes: Gastrosteidae), in Northwestern Nebraska

McAllister¹,

Villeda²,

Charron³

2010

The American Midland Naturalist

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Section: Discussioncontrasting

confidence: 46%

“…Fish may also seasonally invade temporary waters especially when connections to a permanent water body occur via hydrologic events (Chapman & Warburton 2006;Hodges & Magoulick 2011). This hydrologic variability is often displayed in a braided river system such as the Platte River (Eschner et al 1981;Whiles & Goldowitz 2005).…”

Section: Introductionmentioning

confidence: 99%

Two New Geographic Distribution Records for the Brook Stickleback, Culaea inconstans (Gastrosteiformes: Gastrosteidae), in Northwestern Nebraska

McAllister¹,

Villeda²,

Charron³

2010

The American Midland Naturalist

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“…Depuis les cinquante dernières années, une abondante littérature fait état de ces perturbations anthropiques et des impacts qu'elles ont eu sur l'écocomplexe alluvial en Europe (Pautou, 1984 ;Pautou et al, 1992 ;Décamps, 1993 ;Hughes, 1994 ;Piégay, 1995 ;Bravard et al, 1997 ;Surian, 1999 ;Piégay et al, 2003a ;Steiger et al, 2005), aux États-Unis (Johnson, 1994 ;Gurnell et Gregory, 1995 ;Miller et al, 1995 ;Johnson, 1998 ;Merritt et Cooper, 2000 ;Cooper et al, 2003) et en Australie (Brierley et al, 1999 ;Kingsford, 2000 ;Gehrke et Harris, 2001). Ces impacts anthropiques se traduisent le plus souvent par la suppression de la dynamique naturelle (Peiry, 1997), la simplification de la morphologie du chenal (Sidle et Sharma, 1986 ;Steiger et al, 2000 ;Pisùt, 2002), l'isolement du chenal principal de sa plaine d'inondation par diminution de la largeur du lit (Eschner et al, 1983) et le changement de physionomie de la plaine d'inondation (Johnson et al, 1992 ;Johnson, 1997). Ces interventions ont très largement contribué à modifier la dynamique des paysages alluviaux et leurs conséquences restent encore difficiles à pré-dire (Naiman, 1992).…”

Section: Introductionunclassified

Reconstitution de la dynamique du paysage alluvial de trois secteurs fonctionnels de la rivière allier (1946-2000), Massif central, France

Petit

2008

gpq

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L’écocomplexe de la plaine d’inondation de la rivière Allier a été étudié dans trois secteurs fonctionnels présentant une dynamique géomorphologique contrastée : le secteur à méandres de Joze-Maringues où l’Allier est corseté par des enrochements et touché par les extractions de granulats, le secteur à méandres mobiles de la Réserve Naturelle du Val d’Allier et le secteur à bras multiples situé entre les villages de Villeneuve-sur-Allier et du Veurdre. L’étude se fonde sur six à huit missions de photographies aériennes prises entre 1946 et 2000 pour déceler la dynamique du paysage alluvial. L’occupation du sol, la largeur de la bande active et le taux d’érosion des berges ont été estimés par photo-interprétation et leur évolution spatiotemporelle a été mise en évidence par des traitements statistiques et cartographiques. Les résultats indiquent un accroissement des surfaces vouées à l’agriculture à partir des années 1950 et une progression du recouvrement de la végétation arborée en lien avec la modification des pratiques culturales et la rétroaction de la bande active. Dans les trois secteurs, le pourcentage de la végétation arborée est passé de 10 à 17 % en 50 ans. Depuis la seconde moitié du 20e siècle, la modification des pratiques agro-pastorales semble être un agent prépondérant pour expliquer la végétalisation progressive de la plaine alluviale de la rivière Allier. L’érosion des berges ne s’est pas atténuée durant cette période. Elle était plus active pendant la décennie 1970-1980 en raison des crues plus fréquentes et plus intenses.The landscape mosaics of the Allier river floodplain has been studied in three functional reaches with contrasted geomorphic activities : the Joze-Maringues meander reach where the river is constrained by embankments and affected by gravel mining, the shifting meander reach of the Val d’Allier Natural Reserve, and the anabranching reach between the village of Villeneuve-sur-Allier and Le Veurdre. This study is based on six to eight aerial photography, series taken between 1946 and 2000, to underline the dynamics of the alluvial landscape. Land cover types, active channel width and river bank erosion rate have been assessed from the photo interpretation, and their change in space and time has been statistically analysed and mapped. The results point to an increase of the cultivated areas from the 1950’s, and an extension of the tree-cover in relation with a change of agricultural practices and the decrease of the channel activity. In the three reaches, the percentage of the tree-cover has moved from 10 to 17% in 50 years. From the second half of the 20th century, the change in the agro-pastoral practices seems to be a major factor explaining the increase of the floodplain tree and bush cover. Bank erosion has not diminished during this period. It was more active in the 1970-1980 decade owing to more severe and frequent floods

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“…Water-provisioning infrastructure, such as dams and diversions, engineered for industrial, agricultural, and domestic use has removed or retimed 70% of the Platte's natural flow regime, directly and indirectly altering the structural, biological, and ecological characteristics of the watershed (Williams 1978, Aiken 1999, Strange 1999, Brei et al 2008. Reduced flood pulses and stream flow have limited the natural structuring process of sediment scouring, encouraged the encroachment of vegetation, and had an impact on wildlife habitat (Eschner 1981, Johnson 1994. The recent modified flow regimes have prompted legal litigation and recovery plans to manage land and restore adequate stream flows, resulting in contention among various public, industry, and governmental entities.…”

Section: Study Areamentioning

confidence: 99%

Capturing change: the duality of time-lapse imagery to acquire data and depict ecological dynamics

Buckley¹,

Allen²,

Forsberg³

et al. 2017

E&S

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ABSTRACT. We investigate the scientific and communicative value of time-lapse imagery by exploring applications for data collection and visualization. Time-lapse imagery has a myriad of possible applications to study and depict ecosystems and can operate at unique temporal and spatial scales to bridge the gap between large-scale satellite imagery projects and observational field research. Time-lapse data sequences, linking time-lapse imagery with data visualization, have the ability to make data come alive for a wider audience by connecting abstract numbers to images that root data in time and place. Utilizing imagery from the Platte Basin Timelapse Project, water inundation and vegetation phenology metrics are quantified via image analysis and then paired with passive monitoring data, including streamflow and water chemistry. Dynamic and interactive time-lapse data sequences elucidate the visible and invisible ecological dynamics of a significantly altered yet internationally important river system in central Nebraska.

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Hydrologic and morphologic changes in channels of the Platte River basin: A historical perspective

Cited by 57 publications

References 0 publications

Two New Geographic Distribution Records for the Brook Stickleback, Culaea inconstans (Gastrosteiformes: Gastrosteidae), in Northwestern Nebraska

Two New Geographic Distribution Records for the Brook Stickleback, Culaea inconstans (Gastrosteiformes: Gastrosteidae), in Northwestern Nebraska

Reconstitution de la dynamique du paysage alluvial de trois secteurs fonctionnels de la rivière allier (1946-2000), Massif central, France

Capturing change: the duality of time-lapse imagery to acquire data and depict ecological dynamics

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