Projected risks to groundwater‐dependent terrestrial vegetation caused by changing climate and groundwater abstraction in the Central Perth Basin, Western Australia

Barron, Olga; Froend, Raymond H.; Hodgson, Geoff; Ali, Riasat; Dawes, Warrick; Davies, Phil; McFarlane, Don

doi:10.1002/hyp.10014

Cited by 34 publications

(28 citation statements)

References 62 publications

(75 reference statements)

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“…Planting roost trees for the future should be implemented to replace the loss of current trees through natural attrition, water stress (Barron et al . ) and encroaching development or redevelopment of roost habitats.…”

Section: Discussionmentioning

confidence: 99%

Assessing the spatial ecology and resource use of a mobile and endangered species in an urbanized landscape using satellite telemetry and DNA faecal metabarcoding

Groom

White

Mitchell

et al. 2016

Ibis

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The conservation of highly mobile species presents challenges to managers for assessment of threats to survival, given the difficulties in locating and observing such species. Here we evaluate satellite telemetry, DNA faecal metabarcoding and traditional field observations as three complementary techniques to acquire critical management information for an endangered species, Carnaby's Cockatoo Calyptorhynchus latirostris. Satellite telemetry of 23 birds resulted in 6026 location fixes accurate to within 500 m, and combined with extensive field observations and DNA faecal metabarcoding resulted in a more detailed understanding of how this species survives in an urbanized landscape. We identified 168 night roosts, 75% of which were previously unknown, which will contribute towards a more accurate population size estimate based on annual counts of roosting birds. We also determined the scale of daily movements (morning 5.4 ± 3.4 km from roost, afternoon 5.5 ± 3.3 km to roost; maximum distance between consecutive roosts 69.7 km) and the size of foraging areas around roosts (range 17–276 km2), and identified dependence on a variety of native and exotic food sources. Field observations identified 11 food‐plant families, but combined with DNA faecal metabarcoding this was extended to 21 food‐plant families. The three techniques were compared to assess their individual and collective values. By combining spatial ecology information from satellite telemetry with ecological knowledge from field observation and DNA faecal analysis, we gained deeper insights into the ecology of the species than would have been possible from any one technique alone. This information will lead to more strategic conservation planning to allow this species to persist within a rapidly expanding urban environment.

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Section: Discussionmentioning

confidence: 99%

Assessing the spatial ecology and resource use of a mobile and endangered species in an urbanized landscape using satellite telemetry and DNA faecal metabarcoding

Groom

White

Mitchell

et al. 2016

Ibis

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“…The results show that the allocation of irrigation supplies, especially in areas where groundwater is shallow, needs to be modified to improve the efficiency of water use and to maintain an optimal depth to groundwater. In addition, nearby native groundwater‐dependent ecosystems might be influenced by changes in groundwater depth as a result of irrigation extracted from either streams or groundwater (Barron et al, ; Elmore, Mustard, & Manning, ). In the San Joaquin Valley of America, large‐scale irrigation occurs, which lacks drainage‐water disposal facilities, and results in severe salinity and land retirement (Hanson, May, Šim̊unek, Hopmans, & Hutmacher, ).…”

Section: Introductionmentioning

confidence: 99%

Drip irrigation enhances shallow groundwater contribution to crop water consumption in an arid area

Wang

Huo

Guan

et al. 2018

Hydrological Processes

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Shallow groundwater plays a key role in agro‐hydrological processes of arid areas. Groundwater often supplies a necessary part of the water requirement of crops and surrounding native vegetation, such as groundwater‐dependent ecosystems. However, the impact of water‐saving irrigation on cropland water balance, such as the contribution of shallow groundwater to field evapotranspiration, requires further investigation. Increased understanding of quantitative evaluation of field‐scale water productivity under different irrigation methods aids policy and decision‐making. In this study, high‐resolution water table depth and soil water content in field maize were monitored under conditions of flood irrigation (FI) and drip irrigation (DI), respectively. Groundwater evapotranspiration (ETg) was estimated by the combination of the water table fluctuation method and an empirical groundwater–soil–atmosphere continuum model. The results indicate that daily ETg at different growth stages varies under the two irrigation methods. Between two consecutive irrigation events of the FI site, daily ETg rate increases from zero to greater than that of the DI site. Maize under DI steadily consumes more groundwater than FI, accounting for 16.4% and 14.5% of ETa, respectively. Overall, FI recharges groundwater, whereas DI extracts water from shallow groundwater. The yield under DI increases compared with that under FI, with less ETa (526 mm) compared with FI (578 mm), and irrigation water productivity improves from 3.51 kg m−3 (FI) to 4.58 kg m−3 (DI) through reducing deep drainage and soil evaporation by DI. These results highlight the critical role of irrigation method and groundwater on crop water consumption and productivity. This study provides important information to aid the development of agricultural irrigation schemes in arid areas with shallow groundwater.

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“…The purpose of this study is to reveal the influence of atmospheric precipitation and Fenhe River leakage on karst groundwater recharge in the spring region and to provide a scientific basis for the reasonable exploitation and utilization of karst groundwater resources in the spring region and the establishment of karst groundwater management and protection policies [17,18].…”

Section: Introductionmentioning

confidence: 99%

Climate Change and Its Influence on the Karst Groundwater Recharge in the Jinci Spring Region, Northern China

Jia

Zang

Zheng

et al. 2017

Water

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Due to climate change and human activities over the last fifty years, the spring flow volume of karst groundwater has sharply diminished in China. Climate change is one of the critical factors that initiates a series of karst hydrogeologic and water ecological environmental problems, because the precipitation shows a decreasing trend while the temperature shows an increasing trend. The Jinci Spring is one of the largest, most famous springs in northern China. This study employed data from the Taiyuan Meteorological Station and ten precipitation stations in and around the Jinci Spring region as well as the runoff data gathered from two hydrological monitoring stations during 1960-2012. The sliding average method and the Mann-Kendall test were used to analyze the variation tendency of precipitation, temperature, and land evaporation in this area. Finally, the following were calculated: the varying pattern of the karst groundwater recharge amount and the response of the recharge amount to precipitation, land evaporation, and river runoff by quantitative analysis. The results indicated that the precipitation and land evaporation amount decreased at first and then subsequently increased. Likewise, the variation trend of the karst groundwater recharge amount in the spring region was roughly consistent with the precipitation variation pattern. In contrast, the temperature displayed an increasing trend. The climate change resulted in a reduction of the karst groundwater recharge amount, and it had the greatest influence in the 1990s, which caused the karst groundwater recharge amount to decrease 26.75 mm as compared to that of the 1960s (about 39.68% lower than that of the 1960s). The Jinci Spring had zero flow during this period. The reduction in precipitation was one of main factors that caused the cutoff of the Jinci Spring.

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Projected risks to groundwater‐dependent terrestrial vegetation caused by changing climate and groundwater abstraction in the Central Perth Basin, Western Australia

Cited by 34 publications

References 62 publications

Assessing the spatial ecology and resource use of a mobile and endangered species in an urbanized landscape using satellite telemetry and DNA faecal metabarcoding

Assessing the spatial ecology and resource use of a mobile and endangered species in an urbanized landscape using satellite telemetry and DNA faecal metabarcoding

Drip irrigation enhances shallow groundwater contribution to crop water consumption in an arid area

Climate Change and Its Influence on the Karst Groundwater Recharge in the Jinci Spring Region, Northern China

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