crass_bgc

Scripts, data, and figures for Collaborative for Research in Arid Stream Systems Biogeochemistry working group. Note, these resources were created primarily to support the following manuscript, but they also contain data and analysis scripts for other projects:

H.E. Lowman, J.R. Blaszczak, A. Cale, X. Dong, S. Earl, J. Grabow, N.B. Grimm, T.K. Harms, J.M. Melack, A.M. Reinhold, B. Summers, A. Webster. Accepted at Biogeochemistry Letters. Persistent and lagged effects of fire on stream solutes linked to intermittent precipitation in arid lands.

Please visit the Zenodo webpage to access the most relevant versions of data and code - DOI: 10.5281/zenodo.11199122.

• The data_raw folder contains raw chemistry, discharge, precipitation, and watershed characteristic data from the Mediterranean (Santa Barbara, CA) and monsoonal (Valles Caldera, NM) stream locations.
• The data_working folder contains the aggregated datasets used to fit the MARSS models as well as the MARSS model outputs.
• The figures folder contains all versions of figures created in this project from initial data visualization and examination to final manuscript figures generated.
• The R folder contains additional folders with scripts for initial data visualization (data_vis, large_rivers), sample collaborator scripts (others_scripts), and the MARSS model prep and fit scripts (marss) which are presented in more detail below:
  • Specific conductance data was prepped for modeling using cond_marss_model_data_prep.R and fit using cond_marss_models.R.
  • Nutrient (i.e., nitrate, ammonium, and phosphate) data was prepped for modeling using nutrient_marss_model_data_prep.R and fit using no3_marss_models.R, nh4_marss_models.R, and po4_marss_models.R. The final manuscript figure was assembled using nutrient_marss_figure.R.
  • Supplementary manuscript figures were created using chem_figures.R.
  • Additional MARSS models fit to satisfy reviewer comments may be found in supp_marss_models.R.
• The hydrologic_distance folder contains scripts and figures generated to calculate proximity of fire perimeters to stream sampling locations.

Data for this project were downloaded from multiple published data sources including:

• LTER SBC, Melack J.M. (2019) Precipitation at Arroyo Hondo at Upper Outlaw Trail (HO202) ver 10. Environmental Data Initiative. https://doi.org/10.6073/pasta/128b6fc45f7d840a673b3c3b2f2eaa32
• LTER SBC, Melack J.M. (2019) SBC LTER: Land: Hydrology: Santa Barbara County Flood Control District - Precipitation at Cater Water Treatment Plant (CaterWTP229). https://doi.org/10.6073/PASTA/8E12EFBC31D84DBED0C105F8C8A2486F
• LTER SBC, Melack J.M. (2019) SBC LTER: Land: Hydrology: Santa Barbara County Flood Control District - Precipitation at El Deseo (ElDeseo255). https://doi.org/10.6073/PASTA/C5819A9D15A98696E65F0EFD8B45C14A
• LTER SBC, Melack J.M. (2019) SBC LTER: Land: Hydrology: Stream discharge and associated parameters at Arroyo Burro Creek, Cliff Drive (AB00). https://doi.org/10.6073/PASTA/66F46E14C73B5CE07EF104B91C09360B
• LTER SBC, Melack J.M. (2019) SBC LTER: Land: Hydrology: Stream discharge and associated parameters at Gaviota Creek, Hwy 101 South Rest Stop (GV01). https://doi.org/10.6073/PASTA/3CDF7FD60F88F0822ECFAD5A92EDF9D6
• LTER SBC, Melack J.M. (2019) SBC LTER: Land: Hydrology: Stream discharge and associated parameters at Arroyo Hondo Creek , Upstream Side of 101 Bridge (HO00). https://doi.org/10.6073/PASTA/85F4639AC0AC76C1EB4B3A82842CE171
• LTER SBC, Melack J.M. (2019) SBC LTER: Land: Hydrology: Stream discharge and associated parameters at Rattlesnake Creek, Las Canoas Rd (RS02). https://doi.org/10.6073/PASTA/00AD8507A9EED8E923867C67D907AF12
• LTER, SBC, Melack, J.M. (2020) SBC LTER: Land: Stream chemistry in the Santa Barbara Coastal drainage area, 2000-2018. Environmental Data Initiative. https://doi.org/10.6073/pasta/ae8784dcba16a65aa3c8e44321b7c1bb
• LTER SBC, Melack J.M. (2022) SBC LTER: Land: Hydrology: Precipitation at Gaviota at Las Cruces School (GV202). https://doi.org/10.6073/PASTA/9E655E16C8386E8A0CD475F9EB4A8FCD
• Western Regional Climate Center (2021) Valles Caldera National Preserve Climate Stations. https://wrcc.dri.edu/vallescaldera

Stream chemistry data for the monsoonal sites located in the Valles Caldera National Preserve were provided by L. Crossey, C. McGibbon, and M. Albonico; it is in the process of being made publicly available by the National Parks Service at https://irma.nps.gov/aqwebportal.

For additional information, please contact Heili at heili.lowman at duke.edu or Tamara at tharms at ucr.edu