Water sources accessed by arid zone riparian trees in highly saline environments, Australia

Costelloe, Justin F.; Payne, Emily; Woodrow, Ian E.; Irvine, Elizabeth; Western, Andrew W.; Leaney, Fred

doi:10.1007/s00442-008-0975-4

Cited by 46 publications

(40 citation statements)

References 41 publications

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“…6). Extensive tracts of woodland with trees 10-25 m in height within the GWW are somewhat surprising; groundwater quality is often saline and acidic, hence reliance on groundwater cannot be assumed (Farrington et al 1994;Costelloe et al 2008). Secondly, the GWW have a remarkably high level of diversity and regional endemism among woody plants (Hopper and Gioia 2004), supporting for example, c. 30% of Australia's eucalypt species in <2% of the Australian continent.…”

Section: Anthropogenic Degradationmentioning

confidence: 96%

Facilitating adaptation of biodiversity to climate change: a conceptual framework applied to the world’s largest Mediterranean-climate woodland

Prober

Thiele²,

Rundel

et al. 2011

Climatic Change

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The importance of ecological management for reducing the vulnerability of biodiversity to climate change is increasingly recognized, yet frameworks to facilitate a structured approach to climate adaptation management are lacking. We developed a conceptual framework that can guide identification of climate change impacts and adaptive management options in a given region or biome. The framework focuses on potential points of early climate change impact, and organizes these along two main axes. First, it recognizes that climate change can act at a range of ecological scales. Secondly, it emphasizes that outcomes are dependent on two potentially interacting and countervailing forces: (1) changes to environmental parameters and ecological processes brought about by climate change, and (2) responses of component systems as determined by attributes of resistance and resilience. Through this structure, the framework draws together a broad range of ecological concepts, with a novel emphasis on attributes of resistance and resilience that can temper the response of species, ecosystems and landscapes to climate change. We applied the framework to the world’s largest remaining Mediterranean-climate woodland, the ‘Great Western Woodlands’ of south-western Australia. In this relatively intact region, maintaining inherent resistance and resilience by preventing anthropogenic degradation is of highest priority and lowest risk. Limited, higher risk options such as fire management, protection of refugia and translocation of adaptive genes may be justifiable under more extreme change, hence our capacity to predict the extent of change strongly impinges on such management decisions. These conclusions may contrast with similar analyses in degraded landscapes, where natural integrity is already compromised, and existing investment in restoration may facilitate experimentation with higher risk options

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Section: Anthropogenic Degradationmentioning

confidence: 96%

Facilitating adaptation of biodiversity to climate change: a conceptual framework applied to the world’s largest Mediterranean-climate woodland

Prober

Thiele²,

Rundel

et al. 2011

Climatic Change

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“…Thus, ecosystems that strongly rely on groundwater will be affected by channel incision or climate-induced hydrologic changes [154]. Furthermore, riparian trees in arid zone may developed many strategies to adapt to high groundwater and soil water salinities [155].…”

Section: The Role Of Water Availability In Shaping Riparian Trophic Smentioning

confidence: 99%

Importance of Riparian Zone: Effects of Resource Availability at Land-water Interface

Xiang¹,

Zhang²,

Richardson³

2017

Riparian Ecology and Conservation

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Riparian zone provides a variety of resources to organisms, including availability of water and subsidies. Water availability in riparian areas influences species distribution and trophic interaction of terrestrial food webs. Cross-ecosystem subsidies as resource flux of additional energy, nutrients, and materials benefit riparian populations and communities (e.g. plants, spiders, lizards, birds and mammals). However, aquatic ecosystems and riparian zones are prone to anthropogenic disturbances, which change water availability and affect the flux dynamics of cross-system subsidies. Yet, we still lack sufficient empirical studies assessing impacts of disturbances of land use, climate change and invasive species individually and interactively on aquatic and riparian ecosystems through influencing subsidy resource availability. In filling this knowledge gap, we can make more effective efforts to protect and conserve riparian habitats and biodiversity, and maintain riparian ecosystem functioning and services.

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“…Direct groundwater use has been demonstrated for a number of species but the amount will vary as a function of species (White et al 2002), soil structure (Casper et al 2003), water quality (Costelloe et al 2008) and depth to groundwater (Benyon et al 2006). The root system architecture has a significant influence on patterns of soil water utilization by trees and ultimately canopy transpiration (Ong et al 2002).…”

Section: Introductionmentioning

confidence: 98%

Hydraulic redistribution in Eucalyptus kochii subsp. borealis with variable access to fresh groundwater

Brooksbank

White

Veneklaas

et al. 2011

Trees

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Salinity caused by land clearing is an important cause of land degradation in the Western Australian wheatbelt. Returning a proportion of the cleared land to higher water use perennial vegetation is one option for reducing or slowing the salinisation of land. Over the course of a year patterns of water use by Eucalyptus kochii subsp borealis (C. Gardner) D. Nicolle, a mallee eucalypt species, were monitored in three landscape positions with different water availability. One treatment had groundwater at 2 m, a second at 4.5 m and a third had groundwater below a silcrete hardpan thought to be impenetrable to roots. Hydraulic redistribution was observed in all landscape positions, and rates were positively correlated with the magnitude of soil water potential gradients within the soil. High rates of hydraulic redistribution, facilitated by abundant deep water may increase tree water use by wetting surface soils and reducing stomatal closure. This effect may be countered by increased soil evaporation of water moved from root to soil following hydraulic redistribution; the net volumes of redistributed water though lateral roots was calculated to be the equivalent of up to 27% of transpiration.

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Water sources accessed by arid zone riparian trees in highly saline environments, Australia

Cited by 46 publications

References 41 publications

Facilitating adaptation of biodiversity to climate change: a conceptual framework applied to the world’s largest Mediterranean-climate woodland

Facilitating adaptation of biodiversity to climate change: a conceptual framework applied to the world’s largest Mediterranean-climate woodland

Importance of Riparian Zone: Effects of Resource Availability at Land-water Interface

Hydraulic redistribution in Eucalyptus kochii subsp. borealis with variable access to fresh groundwater

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