The studies conducted in spring have shown the main trends changes structure of zooplankton kultuk zone Volga River delta years that differ hydrological and temperature regimes. It was revealed low-water (2012, 2014), with a decrease volume runoff, water level, reduction duration floods, characterized by relatively low species richness, high biomass Copepoda Cladocera. At same time, highest rat...

Saguinus inustus (Schwarz, 1951) is one of the neotropical primates least studied. The distribution of the species ranges from the north of the Solimões River, between the Negro and Japurá Rivers in Brazil, and Guayabero-Guaviare Rivers in Colombia. Nevertheless, due to the low number of specimens collected from the lower Japurá and lower Negro Rivers areas, the geographic distribution is so fa...

Cottonwoods, riparian poplars, are dioecious and prior studies have indicated that female poplars and willows can be more abundant than males in low-elevation zones, which are occasionally flooded. We investigated the response to flooding of clonal saplings of 12 male and 9 female narrowleaf cottonwoods (Populus angustifolia) grown for 15 weeks in a greenhouse, along with three females of a co-...

BACKGROUND AND AIMS Erythrina speciosa is a Neotropical tree that grows mainly in moist habitats. To characterize the physiological, morphological and growth responses to soil water saturation, young plants of E. speciosa were subjected experimentally to soil flooding. METHODS Flooding was imposed from 2 to 4 cm above the soil surface in water-filled tanks for 60 d. Non-flooded (control) plan...

Field observations indicate that the distribution of certain forest tree species is modified by periodic flooding of the soil. There appear to be distinct differences between species with respect to the amount of flooding which they will tolerate. Overcup oak, for example, often occurs on areas which are flooded for considerable periods of time during the year, but northern red oak usually occu...

The Paraná Delta is a region stretching through the final 300 km of the Paraná river basin, covering approximately 17,500 km [Kandus et al., 2006] and is located between 32o05’S, 60o48’W, and 34o29’S, 58o30’W, close to the city of Buenos Aires. It is a vast macro-mosaic of wetland types, and has a complex hydrological regime determined by the influence of the Paraná and Uruguay rivers and De La...

Responses of barnyardgrass (Echinochloa crus-galli var. crux-galli) to water drained, saturated, or flooded soils were assessed in relation to the aerenchyma formation in crown roots. Plant height, fresh weight of shoots, the number of crown roots, and the fresh weight of roots of 4-week-old barnyardgrass increased in the following order: saturated>drained>flooded. By contrast, aerenchyma was r...