Hultine K. R., Dettman D. L., Williams D. G., Puente R., English N. B., Butterfield B. J., Búrquez A., Relationships among climate, stem growth, and biomass δ¹³C in the giant saguaro cactus (Carnegiea gigantea), Ecosphere, 2018, 9(11):e02498, doi: 10.1002/ecs2.2498
This paper relates saguaro stem growth, spine carbon-isotope composition and seasonal plant-volume changes to climate. A six-population comparison in 2014 is supplemented by observations of two populations during 2013–2016. Considering both precipitation and vapour-pressure deficit distinguishes spatial and temporal growth relationships.