Semi-arid vegetation response to antecedent climate and water balance windows

2016 ◽  
Vol 19 (3) ◽  
pp. 413-429 ◽  
Author(s):  
David P. Thoma ◽  
Seth M. Munson ◽  
Kathryn M. Irvine ◽  
Dana L. Witwicki ◽  
Erin L. Bunting
Keyword(s):  
Water Balance ◽  
Vegetation Response ◽  
Semi Arid ◽  
Arid Vegetation

scholarly journals Soil Water Balance and Vegetation Dynamics in a Semi-arid Mediterranean Ecosystem

Proceedings ◽  
2020 ◽  
Vol 30 (1) ◽  
pp. 76
Author(s):  
Ioannis N. Daliakopoulos ◽  
Ioanna Panagea ◽  
Luca Brocca ◽  
Erik van den Elsen
Keyword(s):  
Water Balance ◽  
Soil Water ◽  
Water Availability ◽  
Vegetation Dynamics ◽  
Soil Water Balance ◽  
Mediterranean Ecosystem ◽  
Limiting Factor ◽  
Arid Conditions ◽  
Water Balance Models ◽  
Semi Arid

Under arid conditions, where water availability is the limiting factor for plant survival, water balance models can be used to explain vegetation dynamics. [...]

scholarly journals Analysis of soil and vegetation patterns in semi-arid Mediterranean landscapes by way of a conceptual water balance model

2008 ◽  
Vol 12 (3) ◽  
pp. 899-911 ◽  
Author(s):  
I. Portoghese ◽  
V. Iacobellis ◽  
M. Sivapalan
Keyword(s):  
Water Balance ◽  
Soil Water ◽  
Water Holding Capacity ◽  
Sensitivity Analyses ◽  
Vegetation Types ◽  
Study Region ◽  
Mediterranean Landscapes ◽  
Soil Water Holding Capacity ◽  
Water Holding ◽  
Semi Arid

Abstract. This paper investigates the impact of various vegetation types on water balance variability in semi-arid Mediterranean landscapes, and the different strategies they may have developed to succeed in such water-limited environments. The existence of preferential associations between soil water holding capacity and vegetation species is assessed through an extensive soil geo-database focused on a study region in Southern Italy. Water balance constraints that dominate the organization of landscapes are investigated by a conceptual bucket approach. The temporal water balance dynamics are modelled, with vegetation water use efficiency being parameterized through the use of empirically obtained crop coefficients as surrogates of vegetation behavior in various developmental stages. Sensitivity analyses with respect to the root zone depth and soil water holding capacity are carried out with the aim of explaining the existence of preferential soil-vegetation associations and, hence, the spatial distribution of vegetation types within the study region. Based on these sensitivity analyses the degrees of suitability and adaptability of each vegetation type to parts of the study region are explored with respect of the soil water holding capacity, and the model results were found consistent with the observed affinity patterns.

Grass response to shrub removal in two semi-arid vegetation communities.

2000 ◽  
Vol 22 (2) ◽  
pp. 220 ◽  
Author(s):  
M Page ◽  
RJS Beeton ◽  
JJ Mott
Keyword(s):  
Key Words ◽  
Grazing Pressure ◽  
Grass Cover ◽  
Ecosystem Impacts ◽  
Vegetation Communities ◽  
Specific Research ◽  
Stable Component ◽  
South West ◽  
Semi Arid ◽  
Arid Vegetation

The control of woody weeds in the mulga lands of south-west Queensland is commonly regarded as essential for restoration of degraded systems. However, these shrubs have become a dominant and stable component of many mulga land ecosystems, and their removal may have unknown ecosystem impacts. This paper reports an experiment to determine the effect of woody weeds and grazing pressure on grass recruitment, cover and diversity in two vegetation communities in Queensland's mulga lands. Both factors influence grass recruitment, cover and diversity, but the response differs between the two vegetation communities investigated. The overall grass cover is consistently greater in sites where woody weeds were removed, and where grazing pressure was lowest. However, in the Dunefields community the cover and frequency of grass plants responded more to the removal of woody weeds than in the Mulga Sandplain community. In contrast, in the Mulga Sandplain community the grasses responded more to reducing or removing grazing pressure. Results suggest that subtle differences between systems influence grass dynamics, highlighting the need for community-specific research and management. Key words: shrub removal, semi-arid vegetation, vegetation communities, woody weeds

scholarly journals Long-term water balance and conceptual model of a semi-arid mountainous catchment

2011 ◽  
Vol 400 (1-2) ◽  
pp. 133-143 ◽  
Author(s):  
G.M. Chauvin ◽  
G.N. Flerchinger ◽  
T.E. Link ◽  
Danny Marks ◽  
A.H. Winstral ◽  
...  
Keyword(s):  
Water Balance ◽  
Conceptual Model ◽  
Mountainous Catchment ◽  
Semi Arid
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