A comparative integrated geophysical study of Horseshoe Chimney Cave, Colorado Bend State Park, Texas

Brown, Wesley A.; Stafford, Kevin W.; Shaw-Faulkner, Melinda G.; Grubbs, Andy

doi:10.5038/1827-806x.40.1.2

Cited by 19 publications

(13 citation statements)

References 12 publications

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“…The study site was located in the Edwards Plateau region (west‐central Texas) in Colorado Bend State Park near Bend, TX (31.0451°N, 98.4762°W). This site has karst topography with shallow soils (typically less than 20 cm) with underlying fractured limestone (see Auken, Ford, Stein, & Stein, ; Brown, Stafford, Shaw‐Faulkner, & Grubbs, for more detailed site descriptions). The area is considered semi‐arid (based on the methods of Zomer et al., ; Zomer, Trabucco, Bossio, van Straaten, & Verchot, ) and has a mean annual temperature of 19.5°C and a mean annual precipitation of 702 mm, which is unevenly distributed in many years with the majority occurring in the spring, fall, and winter months (see Johnson, Sherrard, Domec, & Jackson, for example).…”

Section: Methodsmentioning

confidence: 99%

Leaf hydraulic parameters are more plastic in species that experience a wider range of leaf water potentials

et al. 2018

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Many plant species experience large differences in soil moisture availability within a season, potentially leading to a wide range of leaf water potentials (ΨLEAF). In order to decrease the risk of leaf dehydration, among species, there is a continuum ranging from strict control (isohydry) to little control (anisohydry) of minimum ΨLEAF. In central Texas USA, species are exposed to a range of soil moisture from wet springs to hot, dry summers. There are diverging water management strategies among the four dominant woody species in this system; two of these species are more isohydric (Prosopis glandulosa, Quercus fusiformis) while two others are more anisohydric (Diospyros texana, Juniperus asheii). To maintain leaf turgor and photosynthesis during periods of limited soil moisture, anisohydric species may adjust leaf hydraulic parameters more than isohydric species. To test this hypothesis, we quantified iso/anisohydry from 3 years of ΨLEAF predawn and midday measurements, and we measured the changes in turgor loss points (ΨTLP), osmotic potential at full hydration (Ψπ100), and resistance to leaf hydraulic dysfunction (leaf P50) throughout the spring and summer of 2016. Diospyros and Juniperus experienced more negative ΨLEAF and adjusted ΨTLP and Ψπ100 in response to both drying soils during the summer also in response to rainfall events during September. In contrast, the more isohydric species (Quercus and Prosopis) did not appear to adjust ΨTLP or Ψπ100 in response to soil moisture. The more anisohydric species also adjusted leaf P50 during periods of reduced soil moisture. Our results suggest that species that experience wider ranges of ΨLEAF have a greater ability to alter leaf hydraulic properties. This provides insight on how species with different strategies for water potential regulation may modify properties to mitigate drought effects in the future. A http://onlinelibrary.wiley.com/doi/10.1111/1365-2435.13049/suppinfo is available for this article.

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Section: Methodsmentioning

confidence: 99%

Leaf hydraulic parameters are more plastic in species that experience a wider range of leaf water potentials

et al. 2018

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“…The usual approach to detecting cavities is to combine different geophysical methods: seismic refraction, magnetometry and geoelectrics (McCann et al, 1987); microgravimetry, GPR and induced polarization (Brown et al, 2011); gravimetry, magnetometry and GPR (Mochales et al, 2007); magnetic resonance, seismics and electrical tomography (Guerin et al, 2009) and microgravimetry (Ezersky et al, 2009); microgravimetry with GPR (Beres et al, 2001;Leucci and De Giorgi, 2010); electrical tomography (McGrath et al, 2002); electrical tomography with GPR (Lazzari et al, 2010;Leucci and De Giorgi, 2005) and so on. None of these techniques usually exceeds a depth of more than 10-15 m, except that of electrical tomography (Pánek et al, 2010), which can reach depths of around 30 to 40 m. Šumanovac and Weisser (2001) used large electrical quadrupoles to achieve greater depths (~60 m).…”

Section: General Objectivesmentioning

confidence: 99%

Surface geophysics and borehole inspection as an aid to characterizing karst voids and vadose ventilation patterns (Nerja research site, S. Spain)

Vadillo

Benavente

Neukum

et al. 2012

Journal of Applied Geophysics

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“…Za raziskave globljih jam (40-80 m) se je izkazalo, da je primernejša uporaba različnih električnih metod v kombinaciji z magnetnimi in/ali gravimetričnimi metodami (Martínez-Moreno et al, 2013). Metoda georadarja za zaznavanje jam in manjših praznin je primerna večinoma največ do globine 30 m. Georadarske raziskave zaznavanja jam in manjših praznin ter določanje geometrije in razširjanje praznih prostorov v podpovršju se največkrat dopolnjujejo z ostalimi elektromagnetnimi in električnimi metodami (Brown et al, 2011;Carrière et al, 2013;El-Qady et al, 2005;Gómez-Ortiz & Martín-Crespo, 2012;Lazzari et al, 2010), redkeje z gravimetričnimi (Beres et al, 2001;Mochales et al, 2008;Leucci & De Giorgi, 2010) in seizmičnimi metodami (Cardarelli et al, 2010). V večini naštetih raziskav je bil cilj zaznati jame in praznine, v nekaterih pa se je georadar uporabil tudi kot komplementarno metodo pri preučevanju nastanka jam in njihovih zapolnitev (Murphy et al, 2008).…”

Section: Jame In Praznineunclassified

Application of ground penetrating radar in karst environments: An overview

Čeru¹,

Gosar²

2019

Geologija

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Kras kot kompleksen in heterogen sistem predstavlja za georadar velik izziv. Kljub vsemu pa lahko z dobro načrtovanimi georadarskimi raziskavami pridobimo dodatne informacije o plitvem podpovršju, kjer se odvija večina kraških procesov. Zaradi specifičnosti kraškega površja so v uvodnem delu predstavljene nekatere ovire in prilagoditveni pristopi pri raziskavah na krasu. Analiza pregleda objavljene literature je pokazala, da se georadar v kraških okoljih najpogosteje uporablja za zaznavanje jam in območij pogrezanj ter pri preprečevanju nenadnih porušitev tako v urbanih območjih kot tudi pri gradbenih posegih v prostor. Georadar se uporablja tudi pri raziskavah kraških vodonosnikov, epikrasa in raziskavah v kamnolomih. Poleg uveljavljenih aplikacij so predstavljene nekatere še neuveljavljene aplikacije, kot je uporaba georadarja pri raziskavah brezstropih jam in jamskih sedimentov. Glavni namen članka je prikazati in ovrednotiti možnosti uporabe georadarja v različnih kraških okoljih in spodbuditi njegovo uporabo za nekatere nove aplikacije in opozoriti na nujnost interdisciplinarnega pristopa v takšnih študijah.

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A comparative integrated geophysical study of Horseshoe Chimney Cave, Colorado Bend State Park, Texas

Cited by 19 publications

References 12 publications

Leaf hydraulic parameters are more plastic in species that experience a wider range of leaf water potentials

Leaf hydraulic parameters are more plastic in species that experience a wider range of leaf water potentials

Surface geophysics and borehole inspection as an aid to characterizing karst voids and vadose ventilation patterns (Nerja research site, S. Spain)

Application of ground penetrating radar in karst environments: An overview

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