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Journal articles on the topic 'SEMI-ARID FLOODPLAIN RIVER SYSTEMS'

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1

Higgisson, William, Dianne Gleeson, Linda Broadhurst, and Fiona Dyer. "Genetic diversity and gene flow patterns in two riverine plant species with contrasting life-history traits and distributions across a large inland floodplain." Australian Journal of Botany 68, no. 5 (2020): 384. http://dx.doi.org/10.1071/bt20074.

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Gene flow is a key evolutionary driver of spatial genetic structure, reflecting demographic processes and dispersal mechanisms. Understanding how genetic structure is maintained across a landscape can assist in setting conservation objectives. In Australia, floodplains naturally experience highly variable flooding regimes that structure the vegetation communities. Flooding plays an important role, connecting communities on floodplains and enabling dispersal via hydrochory. Water resource development has changed the lateral-connectivity of floodplain-river systems. One possible consequence of t
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2

Thomas, David H. L. "Artisanal Fishing and Environmental Change in a Nigerian Floodplain Wetland." Environmental Conservation 22, no. 2 (1995): 117–26. http://dx.doi.org/10.1017/s037689290001016x.

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Floodplain wetlands are of major importance in semi-arid Africa, providing agricultural, livestock, forestry, and fisheries, products as well as many other goods and services. Through a case-study of a floodplain wetland in northern Nigeria, it is demonstrated that the factors determining the characteristics of floodplain fishermen, defined in terms of how they fish, where they fish, and when they fish, are spatially and temporally very complex and may best be analysed within a simple systems framework.Despite the important values and functions that floodplains provide, many have been degraded
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3

Zellman, Kristine L., Piret Plink-Björklund, and Henry C. Fricke. "Testing hypotheses on signatures of precipitation variability in the river and floodplain deposits of the Paleogene San Juan Basin, New Mexico, U.S.A." Journal of Sedimentary Research 90, no. 12 (2021): 1770–801. http://dx.doi.org/10.2110/jsr.2020.75.

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ABSTRACTMuch progress has been made in recent years towards a set of recognition criteria for river discharge variability in river channel deposits, and thus sedimentary proxies for precipitation variability. Despite this progress, there is currently no consensus on how different styles of discharge variability are reflected in river sedimentary records, and whether variable-discharge river records from different climate types can be distinguished. Herein, river discharge and precipitation variability in the Paleogene is investigated using associations between river channel and floodplain depo
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4

Vilizzi, Lorenzo, Leigh A. Thwaites, Benjamin B. Smith, Jason M. Nicol, and Chris P. Madden. "Ecological effects of common carp (Cyprinus carpio) in a semi-arid floodplain wetland." Marine and Freshwater Research 65, no. 9 (2014): 802. http://dx.doi.org/10.1071/mf13163.

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Common carp, Cyprinus carpio, is a highly invasive fish species across freshwater systems of south-eastern Australia, and especially in semi-arid floodplain wetlands. However, multi-component, large-scale experimental studies on carp effects on such ecosystems are scarce. This is in spite of demands to prioritise management and control of carp for the rehabilitation of habitats across the Murray–Darling Basin. A 2-year, large-scale field experiment in a terminal wetland of the lower River Murray (South Australia) evaluated the effects of free-ranging carp on water transparency, aquatic macroph
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5

Sheldon, Fran, Stuart E. Bunn, Jane M. Hughes, Angela H. Arthington, Stephen R. Balcombe, and Christine S. Fellows. "Ecological roles and threats to aquatic refugia in arid landscapes: dryland river waterholes." Marine and Freshwater Research 61, no. 8 (2010): 885. http://dx.doi.org/10.1071/mf09239.

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Dryland rivers are renowned for their periods of ‘boom’ related to the episodic floods that extend over vast floodplains and fuel incredible production, and periods of ‘bust’ where the extensive channel network is restricted to the permanent refugial waterholes. Many of these river systems are unregulated by dams but are under increasing pressure, especially from water abstraction and overland flow interception for agriculture and mining. Although some aquatic organisms with desiccation-resistant life stages can utilise ephemeral floodplain habitats, the larger river waterholes represent the o
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Campbell, Cherie Joy, Fiona Linda Freestone, Richard P. Duncan, Will Higgisson, and Sascha Jade Healy. "The more the merrier: using environmental flows to improve floodplain vegetation condition." Marine and Freshwater Research 72, no. 8 (2021): 1185. http://dx.doi.org/10.1071/mf20303.

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Environmental flows are increasingly being used to restore degraded floodplain vegetation; however, the type of flow regime required for recovery to healthy condition can vary depending on the extent of degradation before restoration. Regulation of the River Murray has affected floodplain ecosystems at many locations, including Bottle Bend Reserve, in south-western New South Wales, Australia. Within Bottle Bend Reserve, tangled lignum (Duma florulenta) dominates sections of the higher floodplain elevations. Lignum is an important and widely distributed Australian shrub occurring in arid and se
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7

T. Kingsford, Richard, Rachael F. Thomas, and Alison L. Curtin. "Conservation of wetlands in the Paroo and Warrego River catchments in arid Australia." Pacific Conservation Biology 7, no. 1 (2001): 21. http://dx.doi.org/10.1071/pc010021.

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Irrigation proposals to divert water from the Paroo and Warrego Rivers in arid Australia will affect their aquatic ecosystems. These two are the last of 26 major rivers in the Murray-Darling Basin without large dams and diversions. Knowledge of the extent of their biodiversity value is critical to assessing likely impacts. During the 1990 flood, 1.73 million ha of wetlands, or 12.5% of the land surface of the Paroo and Warrego River catchments, were flooded. Flooded wetland area in the respective catchments was 781 330 ha and 890 534 ha. Most of the wetland area (97%) was floodplain, with 37 f
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8

Gleason, C. J., L. C. Smith, D. C. Finnegan, A. L. LeWinter, L. H. Pitcher, and V. W. Chu. "Technical Note: Semi-automated classification of time-lapse RGB imagery for a remote Greenlandic river." Hydrology and Earth System Sciences Discussions 12, no. 1 (2015): 1311–27. http://dx.doi.org/10.5194/hessd-12-1311-2015.

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Abstract. River systems in remote environments are often challenging to monitor and understand where traditional gauging apparatus are difficult to install or where safety concerns prohibit field measurements. In such cases, remote sensing, especially terrestrial time lapse imaging platforms, offer a means to better understand these fluvial systems. One such environment is found at the proglacial Isortoq River in southwest Greenland, a river with a constantly shifting floodplain and remote Arctic location that make gauging and in situ measurements all but impossible. In order to derive relevan
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9

Gleason, C. J., L. C. Smith, D. C. Finnegan, A. L. LeWinter, L. H. Pitcher, and V. W. Chu. "Technical Note: Semi-automated effective width extraction from time-lapse RGB imagery of a remote, braided Greenlandic river." Hydrology and Earth System Sciences 19, no. 6 (2015): 2963–69. http://dx.doi.org/10.5194/hess-19-2963-2015.

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Abstract. River systems in remote environments are often challenging to monitor and understand where traditional gauging apparatus are difficult to install or where safety concerns prohibit field measurements. In such cases, remote sensing, especially terrestrial time-lapse imaging platforms, offer a means to better understand these fluvial systems. One such environment is found at the proglacial Isortoq River in southwestern Greenland, a river with a constantly shifting floodplain and remote Arctic location that make gauging and in situ measurements all but impossible. In order to derive rele
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10

Fenner, Aaron L., Chris R. Pavey, and C. Michael Bull. "Behavioural observations and use of burrow systems by an endangered Australian arid-zone lizard, Slater's skink (Liopholis slateri)." Australian Journal of Zoology 60, no. 2 (2012): 127. http://dx.doi.org/10.1071/zo12047.

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The endangered Slater’s skink (Liopholis slateri) is restricted to the river floodplain habitat of central Australia. It is an obligate burrower and creates complex, multientrance burrow systems in the mound of soil that builds up around the base of some shrubs and small trees. We provide detailed information about the behaviour and use of the burrow systems by Slater’s skink. The behaviour of lizards remained consistent over the four months (October–January) of the study, and lizards performed almost all of their daily activities around their burrow/mound systems. Lizards also showed signs of
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11

Lamsdell, James C., Linda Lagebro, Gregory D. Edgecombe, Graham E. Budd, and Pierre Gueriau. "Stylonurine eurypterids from the Strud locality (Upper Devonian, Belgium): new insights into the ecology of freshwater sea scorpions." Geological Magazine 156, no. 10 (2019): 1708–14. http://dx.doi.org/10.1017/s0016756818000936.

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AbstractThe Upper Famennian (Upper Devonian) Strud locality has yielded very abundant and diversified flora as well as vertebrate and arthropod faunas. The arthropod fauna, mostly recovered from fine shales deposited in a calm, confined floodplain habitat including temporary pools, has delivered a putative insect and various crustaceans including eumalacostracans and notostracan, spinicaudatan and anostracan branchiopods. Here we present the Strud eurypterids, consisting of semi-articulated juvenile specimens assigned to Hardieopteridae recovered from the pool and floodplain deposits, as well
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12

Stave, J., G. Oba, and N. C. Stenseth. "Temporal changes in woody-plant use and the ekwar indigenous tree management system along the Turkwel River, Kenya." Environmental Conservation 28, no. 2 (2001): 150–59. http://dx.doi.org/10.1017/s0376892901000157.

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Indigenous systems of management for regulating extraction of non-timber forest products (NTFP) have not been well documented in arid zone grazing lands. Conservation projects have therefore lacked information on customary rights to trees, while they have enforced systems of tree resource management that often conflicted with the indigenous system. This study focused on the indigenous tree tenure system of the Turkana pastoralists called ekwar (plural ngikwarin). The indigenous tree management system in 15.4 km2 of the Turkwel River floodplain woodlands near Lodwar, Kenya was investigated. The
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13

Choy, S. C., C. B. Thomson, and J. C. Marshall. "Ecological condition of central Australian arid-zone rivers." Water Science and Technology 45, no. 11 (2002): 225–32. http://dx.doi.org/10.2166/wst.2002.0399.

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Australian arid-zone rivers are known to be ecologically variable and go through “boom and bust” cycles based on highly variable and unpredictable flow regimes. They are facing increasing pressure from land and water resources development and, whilst they are considered to be still in relatively good condition, no studies have yet been carried out to verify this. Such baseline studies are crucial if we are to assess any ecological changes in response to development and management interventions. The ecological condition of four of these endorheic rivers (Georgina, Diamantina, Cooper-Thomson and
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14

Broich, M., A. Huete, M. G. Tulbure, et al. "Land surface phenological response to decadal climate variability across Australia using satellite remote sensing." Biogeosciences 11, no. 18 (2014): 5181–98. http://dx.doi.org/10.5194/bg-11-5181-2014.

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Abstract. Land surface phenological cycles of vegetation greening and browning are influenced by variability in climatic forcing. Quantitative spatial information on phenological cycles and their variability is important for agricultural applications, wildfire fuel accumulation, land management, land surface modeling, and climate change studies. Most phenology studies have focused on temperature-driven Northern Hemisphere systems, where phenology shows annually recurring patterns. However, precipitation-driven non-annual phenology of arid and semi-arid systems (i.e., drylands) received much le
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15

Broich, M., A. Huete, M. G. Tulbure, et al. "Land surface phenological response to decadal climate variability across Australia using satellite remote sensing." Biogeosciences Discussions 11, no. 5 (2014): 7685–719. http://dx.doi.org/10.5194/bgd-11-7685-2014.

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Abstract. Land surface phenological cycles of vegetation greening and browning are influenced by variability in climatic forcing. Quantitative information on phenological cycles and their variability is important for agricultural applications, wildfire fuel accumulation, land management, land surface modeling, and climate change studies. Most phenology studies have focused on temperature-driven Northern Hemisphere systems, where phenology shows annually reoccurring patterns. Yet, precipitation-driven non-annual phenology of arid and semi-arid systems (i.e. drylands) received much less attentio
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16

Stover, Jiana, Edward Keller, Tom Dudley, and Eddy Langendoen. "Fluvial Geomorphology, Root Distribution, and Tensile Strength of the Invasive Giant Reed, Arundo Donax and Its Role on Stream Bank Stability in the Santa Clara River, Southern California." Geosciences 8, no. 8 (2018): 304. http://dx.doi.org/10.3390/geosciences8080304.

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Arundo donax (giant reed) is a large, perennial grass that invades semi-arid riparian systems where it competes with native vegetation and modifies channel geomorphology. For the Santa Clara River, CA, changes in channel width and intensity of braiding over several decades are linked in part to high flow events that remove A. donax. Nevertheless, the area of A. donax at the two study sites increased fivefold over a period of 28 years at one site and fourfold over 15 years at the second site. Effects of A. donax on bank stability are compared to those of a common native riparian tree—Salix laev
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17

Alaghmand, S., S. Beecham, and A. Hassanli. "Impacts of groundwater extraction on salinization risk in a semi-arid floodplain." Natural Hazards and Earth System Sciences 13, no. 12 (2013): 3405–18. http://dx.doi.org/10.5194/nhess-13-3405-2013.

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Abstract. In the lower River Murray in Australia, a combination of a reduction in the frequency, duration and magnitude of natural floods, rising saline water tables in floodplains, and excessive evapotranspiration have led to an irrigation-induced groundwater mound forcing the naturally saline groundwater onto the floodplain. It is during the attenuation phase of floods that these large salt accumulations are likely to be mobilised and discharged into the river. This has been highlighted as the most significant risk in the Murray–Darling Basin and the South Australian Government and catchment
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18

Souter, Nicholas J., Todd Wallace, Mark Walter, and Richard Watts. "Raising river level to improve the condition of a semi-arid floodplain forest." Ecohydrology 7, no. 2 (2013): 334–44. http://dx.doi.org/10.1002/eco.1351.

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19

Smith, Rhiannon, and Nick Reid. "Carbon storage value of native vegetation on a subhumid–semi-arid floodplain." Crop and Pasture Science 64, no. 12 (2013): 1209. http://dx.doi.org/10.1071/cp13075.

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The protection of carbon (C) stores in the form of remnant native vegetation and soils is crucial for minimising C emissions entering the atmosphere. This study estimated C storage in soils, woody vegetation, dead standing vegetation, coarse woody debris, herbaceous vegetation, litter and roots in plant communities commonly encountered on cotton farms. River red gum was the most valuable vegetation type for C storage, having up to 4.5% C content in the surface (0–5 cm) soil, a total-site C store of 216 ± 28 t ha–1 (mean ± s.e.) and a maximum value of 396.4 t C ha–1. Grasslands were the least C
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20

Colloff, Matthew J., and Darren S. Baldwin. "Resilience of floodplain ecosystems in a semi-arid environment." Rangeland Journal 32, no. 3 (2010): 305. http://dx.doi.org/10.1071/rj10015.

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Implicit to loss of ecosystem resilience is that systems can shift from one stable state to another as a result of disturbance. We present a conceptual model of ecosystem resilience of floodplains and wetlands in semi-arid environments like those of the Murray–Darling Basin. The model is based on a single state characterised by fluctuating wet and dry phases driven by episodic floods and droughts. It might appear that such a single state is inherently unstable, but stability, and the measure of resilience, is conferred by the capacity of floodplains and wetlands to undergo drought and yet retu
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21

Ogden, Ralph, and Martin Thoms. "The importance of inundation to floodplain soil fertility in a large semi-arid river." SIL Proceedings, 1922-2010 28, no. 2 (2002): 744–49. http://dx.doi.org/10.1080/03680770.2001.11901813.

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22

Alaghmand, S., S. Beecham, I. D. Jolly, K. L. Holland, J. A. Woods, and A. Hassanli. "Modelling the impacts of river stage manipulation on a complex river-floodplain system in a semi-arid region." Environmental Modelling & Software 59 (September 2014): 109–26. http://dx.doi.org/10.1016/j.envsoft.2014.05.013.

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23

Alaghmand, S., S. Beecham, and A. Hassanli. "Fully integrated physically-based numerical modelling of impacts of groundwater extraction on surface and irrigation-induced groundwater interactions: case study Lower River Murray, Australia." Natural Hazards and Earth System Sciences Discussions 1, no. 4 (2013): 3577–624. http://dx.doi.org/10.5194/nhessd-1-3577-2013.

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Abstract. Combination of reduction in the frequency, duration and magnitude of natural floods, rising saline water-table in floodplains and excessive evapotranspiration have led to an irrigation-induced groundwater mound forced the naturally saline groundwater onto the floodplain in the Lower River Murray. It is during the attenuation phase of floods that these large salt accumulations are likely to be mobilised and will discharge into the river. The Independent Audit Group for Salinity highlighted this as the most significant risk in the Murray–Darling Basin. South Australian government and c
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24

Thoms, M., and P. Cullen. "The Impact of Irrigation Withdrawals on Inland River Systems." Rangeland Journal 20, no. 2 (1998): 226. http://dx.doi.org/10.1071/rj9980226.

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Responsible decision making about water extractions in arid and semi-arid areas requires a good understanding of both the physical and biological character of these systems. The intrinsic variability of these systems is an important ecosystem control. Ecological concepts and water management practices developed in temperate areas are inappropriate to these erratic and highly pulsed systems. Key words: Water resource development, environmental flows, environmental impact, management paradigms
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25

TOOTH, S., T. S. McCARTHY, P. J. HANCOX, et al. "THE GEOMORPHOLOGY OF THE NYL RIVER AND FLOODPLAIN IN THE SEMI-ARID NORTHERN PROVINCE, SOUTH AFRICA." South African Geographical Journal 84, no. 2 (2002): 226–37. http://dx.doi.org/10.1080/03736245.2002.9713774.

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26

González, Eduardo, Etienne Muller, Belinda Gallardo, Francisco Antonio Comín, and María González-Sanchis. "Factors controlling litter production in a large Mediterranean river floodplain forest." Canadian Journal of Forest Research 40, no. 9 (2010): 1698–709. http://dx.doi.org/10.1139/x10-102.

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Although litter production is an essential floodplain forest function, the drivers and their relative importance remain largely unknown, especially in semi-arid rivers. The influence of forest structure, flooding regime, soil conditions, and litterfall chemistry (a total of 17 variables) on spatial variability of litter production within the Middle Ebro River floodplain forests (northeastern Spain) was examined by monitoring litterfall in 12 forest plots in 2007. Linear mixed effects (LME) models, using stem density (SD), river distance (RD) (or soil total organic C (TOC)), and soil total P (T
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27

Alaghmand, S., S. Beecham, J. A. Woods, et al. "Quantifying the impacts of artificial flooding as a salt interception measure on a river-floodplain interaction in a semi-arid saline floodplain." Environmental Modelling & Software 79 (May 2016): 167–83. http://dx.doi.org/10.1016/j.envsoft.2016.02.006.

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28

Cockayne, B. J., D. Sternberg, D. W. Schmarr, A. W. Duguid, and R. Mathwin. "Lake Eyre golden perch (Macquaria sp.) spawning and recruitment is enhanced by flow events in the hydrologically variable rivers of Lake Eyre Basin, Australia." Marine and Freshwater Research 66, no. 9 (2015): 822. http://dx.doi.org/10.1071/mf14242.

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Understanding the links between fish recruitment and riverine flows is integral for setting priorities for river-management strategies, particularly in hydrologically variable and unpredictable arid and semi-arid zone rivers. In the present study, we used daily and annual otolith age estimates to identify relationships between riverine flow and spawning and recruitment of Lake Eyre golden perch (Macquaria sp.); an endemic fish of the Lake Eyre Basin, central Australia. We found a close association between Lake Eyre golden perch spawning and periods of increased river flow, with most of spawnin
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29

Baldwin, Darren S., Warren L. Paul, Jessica S. Wilson, Tara Pitman, Gavin N. Rees, and Annaleise R. Klein. "Changes in soil carbon in response to flooding of the floodplain of a semi-arid lowland river." Freshwater Science 34, no. 2 (2015): 431–39. http://dx.doi.org/10.1086/681009.

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Ringrose, Susan, Wilma Matheson, Mary Seely, Lin Cassidy, Stephan Coetzee, and Thebe Kemosidile. "Aspects of floodplain deposition in semi-arid ephemeral rivers, examples from the Kuiseb river valley, central Namibia." Transactions of the Royal Society of South Africa 69, no. 3 (2014): 187–93. http://dx.doi.org/10.1080/0035919x.2014.953623.

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31

Northcott, Krista, Douglas C. Andersen, and David J. Cooper. "The influence of river regulation and land use on floodplain forest regeneration in the semi-arid upper Colorado River Basin, USA." River Research and Applications 23, no. 6 (2007): 565–77. http://dx.doi.org/10.1002/rra.1007.

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Mvandaba, Vuyelwa, Denis Hughes, Evison Kapangaziwiri, Jean-Marc Mwenge Kahinda, and Nadia Oosthuizen. "Modelling of channel transmission loss processes in semi-arid catchments of southern Africa using the Pitman Model." Proceedings of the International Association of Hydrological Sciences 378 (May 29, 2018): 17–22. http://dx.doi.org/10.5194/piahs-378-17-2018.

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Abstract. Water availability is one of the major societal issues facing the world. The ability to understand and quantify the impact of key hydrological processes, on the availability of water resources, is therefore integral to ensuring equitable and sustainable resource management. Channel transmission losses are an “under-researched” hydrological process that affects resource availability in many semi-arid regions such as the Limpopo River Basin in southern Africa, where the loss processes amount to approximately 30 % of the water balance. To improve the understanding of these loss processe
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Domenech, S., F. Espejo, A. Ollero, and M. Sánchez-Fabre. "Recent floods in the Middle Ebro River, Spain: hydrometeorological aspects and floodplain management." Hydrology and Earth System Sciences Discussions 6, no. 5 (2009): 5937–76. http://dx.doi.org/10.5194/hessd-6-5937-2009.

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Abstract. The Ebro River has the largest Mediterranean basin in the Iberian Peninsula and the third one by surface among those of the Mediterranean Sea. The middle stretch of this river is especially interesting because it constitutes a very economically important axis of population in a semi-arid environment context. Flooding processes are common in the Middle Ebro River, but the combination among decrease of discharges, dam construction and expansion and reinforcement of defences created an unusually quiet period as regards flooding events during the last quarter of the previous century. Nev
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Thorburn, PJ, LJ Mensforth, and GR Walker. "Reliance of creek-side river red gums on creek water." Marine and Freshwater Research 45, no. 8 (1994): 1439. http://dx.doi.org/10.1071/mf9941439.

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Measurements of naturally occurring stable isotopes of hydrogen (2H) and oxygen (18O) were used to determine the importance of creek waters to river red gums (Eucalyptus camaldulensis Dehnh., Myrtaceae) on the banks of creeks in the semi-arid and saline Chowilla floodplain region of South Australia. The 2H and 18O concentrations of water sampled from trees were significantly different from those of the creek water, indicating that, generally, trees were not obtaining all their water from the creek. This was found even in trees overlying highly saline groundwater. Thus, saline groundwater and/o
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35

Annys, Sofie, Tesfaalem Ghebreyohannes, and Jan Nyssen. "Impact of Hydropower Dam Operation and Management on Downstream Hydrogeomorphology in Semi-Arid Environments (Tekeze, Northern Ethiopia)." Water 12, no. 8 (2020): 2237. http://dx.doi.org/10.3390/w12082237.

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Due to renewed interest in hydropower dams in the face of climate change, it is important to assess dam operations and management in combination with downstream impacts on rivers in (semi-)arid environments. In this study, the impacts of the Tekeze hydropower dam on downstream hydrology and river morphology were investigated, including impacts under normal and extreme reservoir operation conditions. Field observations, in-depth interviews, repeat terrestrial photographs, multi-year high-resolution satellite images, daily reservoir water levels and data on hourly to daily energy production were
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Filipe, A. F., I. G. Cowx, and M. J. Collares-Pereira. "Spatial modelling of freshwater fish in semi-arid river systems: a tool for conservation." River Research and Applications 18, no. 2 (2002): 123–36. http://dx.doi.org/10.1002/rra.638.

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Aguiar, Francisca C., Maria Teresa Ferreira, and António Albuquerque. "Patterns of exotic and native plant species richness and cover along a semi-arid Iberian river and across its floodplain." Plant Ecology 184, no. 2 (2005): 189–202. http://dx.doi.org/10.1007/s11258-005-9064-5.

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38

Alaghmand, S., S. Beecham, J. A. Woods, et al. "Injection of fresh river water into a saline floodplain aquifer as a salt interception measure in a semi-arid environment." Ecological Engineering 75 (February 2015): 308–22. http://dx.doi.org/10.1016/j.ecoleng.2014.11.014.

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39

Toledo, Cristian Epifanio, Emanuelly De Moura Silva Almeida, Alexandre Vicente Lopes Neto, Thályta Lharyssa Gonçalves Rodrigues Gonçalves Rodrigues Silva, and Filipe Augusto Rodrigues Santos. "Water loss in transit in an intermittent river in brazilian semi-arid." REVISTA AGRO@MBIENTE ON-LINE 12, no. 3 (2018): 177. http://dx.doi.org/10.18227/1982-8470ragro.v12i3.5090.

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Riverwater often comes into contact with the underground flow in aquifers. When this contact
 occurs, the river and aquifer are considered to be hydraulically connected. In recent decades, there has
 been great interest in trying to to improve understanding of the interactions occuring between superficial and
 subterranean water systems. A variety of analytical solutions have been proposed to describe the interaction of
 confined and free aquifers with adjacent rivers, including the quantification of the decrease of river flow along
 its course. The objective of the cu
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Cantonati, Poikane, Pringle, et al. "Characteristics, Main Impacts, and Stewardship of Natural and Artificial Freshwater Environments: Consequences for Biodiversity Conservation." Water 12, no. 1 (2020): 260. http://dx.doi.org/10.3390/w12010260.

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In this overview (introductory article to a special issue including 14 papers), we consider all main types of natural and artificial inland freshwater habitas (fwh). For each type, we identify the main biodiversity patterns and ecological features, human impacts on the system and environmental issues, and discuss ways to use this information to improve stewardship. Examples of selected key biodiversity/ecological features (habitat type): narrow endemics, sensitive (groundwater and GDEs); crenobionts, LIHRes (springs); unidirectional flow, nutrient spiraling (streams); naturally turbid, floodpl
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Medley, Kimberly E. "Patterns of forest diversity along the Tana River, Kenya." Journal of Tropical Ecology 8, no. 4 (1992): 353–71. http://dx.doi.org/10.1017/s0266467400006684.

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ABSTRACTTropical forest vegetation occurs within a narrow corridor along the semi-arid lower floodplain of the Tana River, Kenya. An inventory of the woody flora and ecological study of 12 forest areas in the Tana River National Primate Reserve (TRNPR) describe the composition and structure of this riverine forest ecosystem and identify patterns of regional and local diversity. Only 175 species in 49 families are recorded in the woody flora, but the geographic affinities of 98 species are from four major floristic regions in Africa: Zanzibar-Inhambane (31%), Somalia-Masai (16%), Guinea-Congoli
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Ogilvie, Andrew, Jean-Christophe Poussin, Jean-Claude Bader, Didier Martin, Gora Ndiaye, and Djiby Dia. "Improved understanding of the Senegal floodplain socio-hydrosystems with multi-scalar earth observations." Proceedings of the International Association of Hydrological Sciences 383 (September 16, 2020): 255–60. http://dx.doi.org/10.5194/piahs-383-255-2020.

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Abstract. In semi-arid regions, the annual floods of alluvial plains, wetlands and lakes provide essential services to millions of farmers, livestock holders and fishers. The scale, number and dispersion of these water bodies limit however their hydrological understanding, whose complexity is exacerbated by the mutual interactions between water and society. Rising availability of high spatial and temporal resolution remote sensing imagery provide novel opportunities to improve the understanding of the hydrology of multiple water bodies and of their ability to support local livelihoods. Multi-s
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Morwood, M. J. "The prehistory of Aboriginal landuse on the upper Flinders River, North Queensland Highlands." Queensland Archaeological Research 7 (January 1, 1990): 3–56. http://dx.doi.org/10.25120/qar.7.1990.126.

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A general theme in Australian prehistory is the development of the distinctive social, economic and technological systems observed in recent Aboriginal societies. Research has demonstrated significant change in the Australian archaeological sequence and general trends of such are shared by numerous regions. Most that have been investigated indicate low density occupation during the Pleistocene and early Holocene with significant increases in site numbers, increased artefact discard rates and dissemination of new technologies and artefact types in mid-to-late Holocene times (e.g. Lourandos 19
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Abd-Elaty, Ismail, Hala M. Ghanayem, Martina Zeleňáková, Peter Mésároš, and Osama K. Saleh. "Numerical Investigation for Riverbank Filtration Sustainability Considering Climatic Changes in Arid and Semi-Arid Regions; Case Study of RBF Site at Embaba, Nile Delta, Egypt." Sustainability 13, no. 4 (2021): 1897. http://dx.doi.org/10.3390/su13041897.

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Changes in riverine hydrography and reduced aquifer recharge due to projected climate changes in arid and semi-arid regions are the main issues of water supply, especially in the Nile Delta, Egypt. Continuous degradation results from reduced Nile water flow, poor management of groundwater extraction, and human activities throughout the Nile’s course and drainage channels. Contamination of this water with heavy metals and dissolved organic solids reduces the quality of this water, which increases the price of treatment. River Bank Filtration (RBF) is a water treatment technology used for improv
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Wang, Shilin, Xinyu Yan, Dong Wang, et al. "Soil Microbial Community Based on PLFA Profiles in an Age Sequence of Pomegranate Plantation in the Middle Yellow River Floodplain." Diversity 13, no. 9 (2021): 408. http://dx.doi.org/10.3390/d13090408.

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Pomegranate (Punica granatum L.) is one of the most important fruit trees in semi-arid land. Previous studies were primarily focused on soil microbial community composition under different pomegranate plantation managements. However, soil microbial community composition under long-term pomegranate plantation has rarely been studied. We investigated pomegranate plantation along with an age sequence (i.e., 1, 3, 5, and 10 years after pomegranate plantation; abbreviated by P1, P3, P5, P10, respectively) in the Middle Yellow River floodplain. Our objectives were to address (1) variations of soil p
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Castino, F., B. Bookhagen, and A. de la Torre. "Atmospheric dynamics of extreme discharge events from 1979 to 2016 in the southern Central Andes." Climate Dynamics 55, no. 11-12 (2020): 3485–505. http://dx.doi.org/10.1007/s00382-020-05458-1.

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Abstract During the South-American Monsoon season, deep convective systems occur at the eastern flank of the Central Andes leading to heavy rainfall and flooding. We investigate the large- and meso-scale atmospheric dynamics associated with extreme discharge events (> 99.9th percentile) observed in two major river catchments meridionally stretching from humid to semi-arid conditions in the southern Central Andes. Based on daily gauge time series and ERA-Interim reanalysis, we made the following three key observations: (1) for the period 1940–2016 daily discharge exhibits more pronounced var
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Heritage, G., S. Tooth, N. Entwistle, and D. Milan. "Long-term flood controls on semi-arid river form: evidence from the Sabie and Olifants rivers, eastern South Africa." Proceedings of the International Association of Hydrological Sciences 367 (March 3, 2015): 141–46. http://dx.doi.org/10.5194/piahs-367-141-2015.

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Abstract. Rivers in the Kruger National Park, eastern South Africa, are characterised by bedrock-influenced "macrochannels" containing variable alluvial thicknesses and riparian vegetation assemblages. Evidence from the Sabie and Olifants rivers suggests that flows up to moderate floods (<3500 m3 s−1) tend to result in net alluviation, with sediments gradually covering the underlying bedrock. More extreme floods strip alluvium and erode bedrock, effectively exerting the primary control over long-term river morphologic development. On the Olifants River, post-flood aerial LIDAR imagery revea
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de Ceballos, B. S. O., H. Oliveira, C. M. B. S. Meira, A. Konig, A. O. Guimarães, and J. T. de Souza. "River water quality improvement by natural and constructed wetland systems in the tropical semi-arid region of Northeastern Brazil." Water Science and Technology 44, no. 11-12 (2001): 599–605. http://dx.doi.org/10.2166/wst.2001.0886.

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The efficiencies of a natural Typha spp wetland (Wn) formed on a river bed and its effluent treatment in a constructed wetland (Wc, subsurface horizontal flow) were investigated in northeastern Brazil (Paraiba State). The Wc system (12 tanks with stone gravel, 4.13 m2, 0.22 m3, 20 Typha spp rhizomes. m-2 each, with 38, 29, and 19 mm.d-1 hydraulic loadings, and 5, 7, and 10 days HRT) was fed daily with effluent from a Wn. Wn removal presented the highest values after Typha spp were cut during the 5th week. Removal values were (1st and 2nd periods or before and after cutting): 75% and 81% BOD5;
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Alaghmand, Sina, Simon Beecham, and Ali Hassanli. "Impacts of Vegetation Cover on Surface-Groundwater Flows and Solute Interactions in a Semi-Arid Saline Floodplain: A Case Study of the Lower Murray River, Australia." Environmental Processes 1, no. 1 (2014): 59–71. http://dx.doi.org/10.1007/s40710-014-0003-0.

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Slaughter, Andrew R., and Sukhmani K. Mantel. "Water quality modelling of an impacted semi-arid catchment using flow data from the WEAP model." Proceedings of the International Association of Hydrological Sciences 377 (April 16, 2018): 25–33. http://dx.doi.org/10.5194/piahs-377-25-2018.

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Abstract. The continuous decline in water quality in many regions is forcing a shift from quantity-based water resources management to a greater emphasis on water quality management. Water quality models can act as invaluable tools as they facilitate a conceptual understanding of processes affecting water quality and can be used to investigate the water quality consequences of management scenarios. In South Africa, the Water Quality Systems Assessment Model (WQSAM) was developed as a management-focussed water quality model that is relatively simple to be able to utilise the small amount of ava
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