Matrix hydrodynamic properties of carbonate rocks from the Betic Cordillera (Spain)

Pulido−Bosch, A.; Motyka, Jacek; Pulido-Leboeuf, P.; Borczak, S.

doi:10.1002/hyp.5595

Cited by 12 publications

(4 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…S1) (Zwieniecki & Newton, 1995), but rock-to-root water transfer is likely to be limited by rock hydraulic conductivity. Different types of carbonate rocks have hydraulic conductivities in the range 10 −9 -10 −12 m s −1 (Boving & Grathwohl, 2001;Pulido-Bosch et al, 2004), that is, several magnitudes lower than values reported for clayey soils (10 −5 -10 −9 m s −1 ), such as those dominating karstic areas (Kubota et al, 2005;Bhardwaj et al, 2007). Mycorrhizas might improve water transfer to the roots (Nardini et al, 2000;Bornyasz et al, 2005;Lehto & Zwiazek, 2011), but rock hydraulics would probably remain limiting.…”

Section: Discussionmentioning

confidence: 93%

“…Based on the conventional permanent wilting point of −1.5 MPa, AWC rock values were 5 and 12 mg g −1 for dolostone and breccia, respectively. Contrasting AWC rock values were consistent with differences in V pores and d rock , and in agreement with previous reports on primary porosity of limestones and dolostones (Pulido‐Bosch et al ., 2004). These findings suggest that plants growing on different rock substrates have potential access to different amounts of available water.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Water ‘on the rocks’: a summer drink for thirsty trees?

et al. 2020

View full text Add to dashboard Cite

Drought-induced tree mortality frequently occurs in patches with different spatial and temporal distributions, which is only partly explained by inter-and intraspecific variation in drought tolerance. We investigated whether bedrock properties, with special reference to rock water storage capacity, affects tree water status and drought response in a rock-dominated landscape. We measured primary porosity and available water content of breccia (B) and dolostone (D) rocks. Saplings of Fraxinus ornus were grown in pots filled with soil or soil mixed with B and D rocks, and subjected to an experimental drought. Finally, we measured seasonal changes in water status of trees in field sites overlying B or D bedrock. B rocks were more porous and stored more available water than D rocks. Potted saplings grown with D rocks had less biomass and suffered more severe water stress than those with B rocks. Trees in sites with B bedrock had more favourable water status than those on D bedrock which also suffered drought-induced canopy dieback. Bedrock represents an important water source for plants under drought. Different bedrock features translate into contrasting below-ground water availability, leading to landscape-level heterogeneity of the impact of drought on tree water status and dieback.

show abstract

Section: Discussionmentioning

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Water ‘on the rocks’: a summer drink for thirsty trees?

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The samples used in these studies were typically collected from shallow, highly weathered bedrock layers and did not provide sufficient information to analyze water flow through a matrix of deep, weakly weathered bedrock layers. Few studies have reported the vertical distribution of K s including deep bedrock layers, measured using core samples from boreholes (Motyka et al, 1998; Flint, 2003; Pulido‐Bosch et al, 2004). Because K s is a fundamental hydraulic parameter, it is essential to obtain better knowledge of matrix K s and its relation to weathering degree.…”

mentioning

confidence: 99%

Hydraulic Properties of Variously Weathered Granitic Bedrock in Headwater Catchments

Katsura

Kosugi

Mizutani

et al. 2009

Vadose Zone Journal

View full text Add to dashboard Cite

Recent studies have emphasized the importance of bedrock in hydrologic processes occurring in headwater catchments. To understand water flow processes through variously weathered bedrock, we measured the saturated hydraulic conductivity, Ks, and water retention characteristics of weakly to highly weathered Tanakami granite and Rokko granite core samples. On the basis of these core‐scale properties, along with the core shape and in situ Ks measurements, we defined two groups of bedrock: CM class (weakly weathered) and CL to DL class (moderately to highly weathered). The CM class bedrock cores had almost no effective porosity (i.e., the amount of porosity that effectively contributes to water flow) and therefore extremely small core‐scale Ks, indicating that the matrix could be regarded as essentially impermeable. The in situ Ks was much larger than the core‐scale values, however, and the core shape showed apparent fractures, suggesting that water did flow preferentially through the fractures. The volumetric water content of the CL– to DL–class bedrock water retention curves changed little in the dry range but changed gradually in the wet range, resulting in a moderate core‐scale Ks of 10−5 to 10−3 cm s−1 The core‐scale Ks values were well explained by the parameters characterizing the water retention curve. The similarity of the in situ Ks to the core‐scale values, and the lack of fractures in the core shape, suggested that water flow could be characterized as matrix flow. The hydraulic properties of weathered granite at other sites followed the trends observed at our sites, implying wide applicability of the findings in this study to various types of weathered granite.

show abstract

“…, rock type (Pulido-Bosch et al 2004, Motyka et al 1998) and type of porosity (Zuber and Motyka, 1994). For instance, hydraulic conductivity of one aquifer has been determined to increase by as much as six orders of magnitude with increases in the volume of rock tested (Ewers 2006, White 2006.…”

mentioning

confidence: 99%