Dataset Listing

Luquillo Mountains - Soil Geochemistry - Phosphorus (2010)

Parent Material and Topography Determine Soil Phosphorus Status in the Luquillo Mountains of Puerto Rico

Variables:  Bedrock, Catena, Soil Depth, Elevation, Mean Elevation, Mean annual Precipitation, Average flux density, NaHCO3-Pi, NaHCO3-Pt, NaHCO3-Po, NaOH-Pi, NaOH-Pt, NaOH-Po, HCl-P, Residual P, Total P, Tau P, Residual to Total, Iron Oxide, For more information please see: https://www.sas.upenn.edu/lczodata/content/parent-material-and-topography-determine-soil-phosphorus-status-luquillo-mountains-puerto-ri

Date Range:  (2010-2010. One time collection of soil samples in summer of 2010 and more sites sampled in 2011. )

Dataset Creators/Authors:  Porder, S.

Contact:  Miguel Leon leonmi@sas.upenn.edu

Field Area:   Northeastern Puerto Rico and the Luquillo Mountains

Description
Keywords & XML
Citation
  • Description

    Phosphorus (P) availability in terrestrial ecosystems depends on soil age, climate, parent material, topographic position, and biota, but the relative
    importance of these drivers has not been assessed. To ask which factor has the strongest influence on long- and short-timescale metrics of P availability, we sampled soils across a full-factorial combination of two parent materials [quartz diorite (QD) and volcaniclastic (VC)], three topographic positions (ridge, slope, and valley), and across 550 m in elevation in 17 sub-watersheds of the Luquillo Mountains, Puerto Rico. VC rocks had double the P content of QD (600 vs. 300 ppm; P < 0.0001), and soil P was similarly approximately 29 higher in VC-derived soils (P < 0.0001). Parent material also explained the most variance in our two other longtimescale metrics of P status: the fraction of recalcitrant P (56% variance explained) and the loss of P relative to parent material (35% variance explained), both of which were higher on VC-derived soils (P < 0.0001 for both). Topographic position explained an additional 10–15% of the variance in these metrics. In contrast, there was no parent material effect on the more labile NaHCO3- and NaOH-extractable P soil pools, which were approximately 2.59 greater in valleys than on ridges (P < 0.0001). Taken together, these data suggest that the relative importance of different state factors varies depending on the ecosystem property of interest and that parent material and topography can play sub-equal roles in driving differences in ecosystem P status across landscapes.
  • Keywords

    phosphorus, parent material, topography, Puerto Rico, state factors

    XML Metadata

    criticalzone.org/national/data/xml-metadata-test/2551/

    XML is in ISO-19115 geographic metadata format, compatible with ESRI Geoportal Server.

  • Citation for This Dataset

    Mage S.N., Porder S. Parent Material and Topography Determine Soil Phosphorus Status in the Luquillo Mountains of Puerto Rico. 2013. https://www.sas.upenn.edu/lczodata/content/parent-material-and-topography-determine-soil-phosphorus-status-luquillo-mountains-puerto-ri

    Citation for This Webpage

    Porder, S. (2010). "CZO Dataset: Luquillo Mountains - Soil Geochemistry (2010) - Phosphorus." Retrieved 18 Aug 2019, from http://criticalzone.org/national/data/dataset/2551/

Data

Luquillo Mountains - Soil Phosphorus 0-20 cm

(20cm)   Data Level 4,  Metadata

Luquillo Mountains - Soil Phosphorus 20-50 cm

(50cm)   Data Level 4,  Metadata

Luquillo Mountains - Soil Phosphorus 50-80 cm

(80cm)   Data Level 4,  Metadata

Data Use Policy
Data Sharing Policy
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