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Showing 1 to 18 of 18 for “"flood pulse"”.
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Flood pulse influences on exploited fish populations of the Central Amazon
Seasonally fluctuating water levels, known as flood pulses, influence the population dynamics and catches of fishes from river-floodplains. Although different measures of flood pulses, here called flood pulse variables, have been correlated to changes in catches of river-floodplain fishes, the …
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Modeling the Impact of Flood Pulses on Disease Outbreaks in Large Water Basins with Scarce Data
… vulnerable to environmental shifts. Annual flood pulse dynamics drive ecological dynamics in the system. In the dry season, water dependent wildlife in northern Botswana concentrates along the Chobe River- Floodplains. Elephant concentration, in particular, is matched to surface water …
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The edge effect: lateral habitat ecology of an alluvial river flood plain
… of the Shifting Habitat Mosaic (SHM) of a river flood plain at the Nyack Research Natural Area in northwestern Montana. Our working hypothesis was that lateral habitats are important to the cycling of energy and materials within the SHM and contribute greatly to the productivity and biodiversity …
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The edge effect: lateral habitat ecology of an alluvial river flood plain
… of the Shifting Habitat Mosaic (SHM) of a river flood plain at the Nyack Research Natural Area in northwestern Montana. Our working hypothesis was that lateral habitats are important to the cycling of energy and materials within the SHM and contribute greatly to the productivity and biodiversity …
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Temporal Patterns of Aquatic Macroinvertebrate Communities and Organic Matter Standing Stock Availability in a Coastal Floodplain (Altamaha River, Georgia)
<p>River floodplain habitats of the Southeastern United States are sites of high biological productivity that rely on a predictable flooding event as a keystone process. This study took place in a river-floodplain area of the Altamaha River, an unimpounded large-order river in the Coastal Plains …
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Quantifying the contribution of bank storage due to an alteration in stream stage
The desire to control rivers to reduce risks of flooding while providing water storage for municipal and agricultural uses has resulted in the disconnection of rivers from their floodplains. An important and often neglected outcome of this detachment is the loss of a plethora of important ecosystem …
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Surface Water and Groundwater Hydraulics, Exchange, and Transport During Simulated Overbank Floods Along a Third-Order Stream in Southwest Virginia
… hydrologic connectivity between the channel and floodplain is a common practice in stream and river restoration. Floodplain hydrology and hydrogeology impact biogeochemical processing and potential nutrient removal, yet rigorous field evaluations of surface and groundwater flows during overbank …
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Ecological-Hydrological Feedback in Forested Wetlands
… is not well understood. The effects of flooding on carbon and water exchanges are important knowledge gaps where progress could benefit management of natural resources and predicting of changes in surface geophysical cycles. Two specific needs are a better understanding of (1) wetland …
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The effects of flooding disturbance on the distribution and behaviour of riparian arthropods along a lowland gravel river
… dynamic ecosystems, mainly flow regimes and flood pulse characteristics are expected to shape both the distribution and behaviour of its inhabitants. The river banks along the Common Meuse are (in)frequently disturbed by flood events and liable to extreme microclimatological conditions. …
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Fruits and frugivory in neotropical primates and in Amazonian flooded and unflooded forests
… adjacent species-rich forest types, seasonally-flooded várzea forests and unflooded terra firme forests. As part of this comparison, the powerful role of the annual flood pulse was shown to determine both spatial patterns of forest structure and temporal patterns of fruit production. The strong …
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Phytosociology, History and Diversity in Farmer-Managed Landscapes on the Tonle Sap Floodplain, Cambodia
<p>Driven by the annual flood pulse of the Tonle Sap Lake, the Tonle Sap floodplain in central Cambodia is a landscape characterized by dynamism, both ecological and social. Annual floods and rainfall vary in timing, duration and intensity from year to year. Patterns of burning, grazing, and …
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Dye Tracing to Delineate Drainage Basins and Determine Groundwater Sensitivity, Mammoth Cave, Kentucky; with Special Reference to Potential Groundwater Contamination from Spills Along Interstate I-65
… late winter and spring, have shown that average flood pulse groundwater flow velocities often exceed 1 km/hr. These high flow rates are contrasted by flow rates in the order of 0.5 km/day during the summer when evapotranspiration is high and rainfall is less frequent. Data from the quantitative …
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Seasonal Investigation of Native Fishes and Their Habitats in Missouri River and Yellowstone River Backwaters
… between the Missouri River and its floodplain have been severely degraded due to channelization and impoundment. Ecologists have assumed that backwaters are a critical habitat component for certain life stages of native fishes; however, documented relationships are limited. During …
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Ecology, Growth, and Migration of Pseudoplatystoma fasciatum in the Amazon Basin
… is affected by interannual variations in the flood pulse. Another crucial aspect of fish ecology is migration. In this dissertation, I review the ecology and conservation of the genus Pseudoplatystoma. Then, I evaluated how inter-annual hydrological variations within the Amazon basin influence …
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Population Characteristics and Sampling Methods of Catfish for the James and Big Sioux Rivers
… Flathead catfish were caught most readily by low-pulsed DC electrofishing and live-baited trotlines. More channel catfish (177) than flathead catfish (4) were caught on trotlines baited with cut common carp Cyprinus carpio, especially when trotlines were set in runs with moderate amounts of woody …
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Fishing and hunting in the Amazon floodplain : linkages among biodiversity conservation, rural livelihoods and food security
… to capture the influences of the seasonal flood pulse and urban markets (metropolitan and provincial) in an extensive and largely-forested area of the Amazon floodplain. This was achieved by interviewing households in 22 communities during both the high and low water season along a 1,267 km …
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Food webs in the lower Waikato River and the role of hydrogeomorphic complexity
… large river food webs where organic matter from floodplains (Flood Pulse Concept), local aquatic sources (Riverine Productivity Model), or leakage from upstream processing of terrestrial organic matter (River Continuum Concept) can fuel secondary production. Recent empirical evidence highlights …
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Lion population status and ecology in a seasonally-flooded wetland, the Okavango Delta
… ecological change in response to an annual flood pulse, the extent of which is determined by both short-and long-term climatic variation. The resulting fluctuations in landscape structure and resource availability affect all trophic levels. However, their effects on apex predators are not …