Spatial and temporal variability of water salinity in an ephemeral, arid-zone river, central Australia

2005 ◽  
Vol 19 (16) ◽  
pp. 3147-3166 ◽  
Author(s):  
Justin F. Costelloe ◽  
Rodger B. Grayson ◽  
Thomas A. McMahon ◽  
Robert M. Argent
Keyword(s):  
Temporal Variability ◽  
Arid Zone ◽  
Water Salinity ◽  
Spatial And Temporal Variability ◽  
Central Australia

scholarly journals Effects of environmental variation on the composition and dynamics of an arid-adapted Australian bird community

2015 ◽  
Vol 21 (1) ◽  
pp. 74 ◽  
Author(s):  
Judy E. Smith
Keyword(s):  
Species Richness ◽  
Temporal Variability ◽  
Environmental Variability ◽  
Arid Zone ◽  
Climatic Variability ◽  
Bird Community ◽  
Bird Communities ◽  
Individual Species ◽  
Spatial And Temporal Variability ◽  
Severe Drought

Environmental variables influence the dynamics of bird communities. Australian arid-adapted bird communities must cope with particularly high levels of spatial and temporal variability, including inevitable but unpredictable periods of drought. Over four years, which included a severe drought and a period of above-average rainfall, I quantified the responses of a bird community in arid north-western New South Wales to regular seasonal and irregular climatic variation, especially rainfall, as well as spatial variation. I found pronounced changes in the abundance and composition of the avifauna that related to drought and, to a lesser extent, seasonal variability. Overall bird abundance and species richness declined during the drought but the magnitude and direction of population fluctuations of resident, nomadic and migratory species, different feeding groups, and individual species were not consistent. Avian densities and species richness in the study area were higher in mesic habitats associated with drainage lines than in run-off areas. The study demonstrated the importance of local habitat heterogeneity. The asynchronous species responses to a fluctuating environment indicated that drought is likely to have a differential effect on resources and that individual species respond differently to environmental variability. Effective land management and conservation of Australian arid-adapted bird communities requires an understanding of their spatial and temporal variability and dynamics at both local and regional level. A proper understanding of the variability and dynamics of the avifauna is especially important as climate change is predicted to exacerbate the climatic variability and unpredictability of the arid zone in future years.

scholarly journals Mineralization and salt composition of the waters of the Middle Amur

2021 ◽  
Vol 895 (1) ◽  
pp. 012039
Author(s):  
V P Shesterkin ◽  
N M Shesterkina
Keyword(s):  
Temporal Variability ◽  
Open Channel ◽  
Water Salinity ◽  
Uneven Distribution ◽  
Spatial And Temporal Variability ◽  
Salt Composition ◽  
Amur River ◽  
Maximum Value ◽  
The Amur River

Abstract The spatial and temporal variability of water salinity and salt composition of the Amur River near Khabarovsk in 2017-2021 was considered. An uneven distribution of water salinity over the river width was established, the greatest differences were observed in the winter low-water period, the lowest in the period of spring floods and floods. The maximum value of salinity was noted in winter, in the period of open channel – after very strong floods.

Response of Corn Grain Yield to Spatial and Temporal Variability in Emergence

Crop Science ◽  
2004 ◽  
Vol 44 (3) ◽  
pp. 847 ◽  
Author(s):  
Weidong Liu ◽  
Matthijs Tollenaar ◽  
Greg Stewart ◽  
William Deen
Keyword(s):  
Grain Yield ◽  
Temporal Variability ◽  
Spatial And Temporal Variability ◽  
Corn Grain ◽  
Corn Grain Yield
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