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LCZO -- Soil Geochemistry -- Phosphorus -- Luquillo Mountains -- (2010-2010)


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Abstract

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

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Resource Level Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Northeastern Puerto Rico and the Luquillo Mountains, Luquillo Mountains
North Latitude
18.3223°
East Longitude
-65.7407°
South Latitude
18.2614°
West Longitude
-65.8569°

Temporal

Start Date:
End Date:

Content

ReadMe.md

LCZO -- Soil Geochemistry -- Phosphorus -- Luquillo Mountains -- (2010)


OVERVIEW

Description/Abstract

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.

Creator/Author

Porder, S.

CZOs

Luquillo

Contact

Miguel Leon leonmi@sas.upenn.edu

Subtitle

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




SUBJECTS

Disciplines

Biogeochemistry

Topics

Soil Geochemistry

Subtopic

Phosphorus

Keywords

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

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

Variables ODM2

Radiation, incoming|Bedrock type|Elevation|Phosphorus, organic|Iron, ferric|Precipitation|Phosphorus, inorganic|Phosphorus, total|Depth, soil




TEMPORAL

Date Start

2010-07-01

Date End

2010-07-30

Date Range Comments

One time collection of soil samples in summer of 2010 and more sites sampled in 2011.




SPATIAL

Field Areas

Northeastern Puerto Rico and the Luquillo Mountains

Location

Luquillo Mountains

North latitude

18.32232903

South latitude

18.26143335

West longitude

-65.85692813

East longitude

-65.74067507




REFERENCE

Citation

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

CZO ID

2551



Additional Metadata

Name Value
czos Luquillo
czo_id 2551
citation 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
keywords phosphorus, parent material, topography, Puerto Rico, state factors
subtitle 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
disciplines Biogeochemistry
date_range_comments One time collection of soil samples in summer of 2010 and more sites sampled in 2011.

How to Cite

Porder, S. (2019). LCZO -- Soil Geochemistry -- Phosphorus -- Luquillo Mountains -- (2010-2010), HydroShare, http://www.hydroshare.org/resource/cf6f7bef4538411f8dd2832ec195991d

This resource is shared under the Creative Commons Attribution CC BY.

 http://creativecommons.org/licenses/by/4.0/
CC-BY

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