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Greater Everglades Burmese python stable isotope data, 2003-2012, and standard ellipse area literature review, 2018

Dates

Publication Date
Start Date
2003-05-01
End Date
2018-06-11

Citation

Smith, B.J., Hart, K.M., Demopoulos, A.W.J., and Romagosa, C.M., 2019, Greater Everglades Burmese python stable isotope data, 2003-2012, and standard ellipse area literature review, 2018: U.S. Geological Survey data release, https://doi.org/10.5066/P9QQ1KVH.

Summary

Burmese pythons are an invasive species in the Greater Everglades Ecosystem. Burmese pythons captured in the ecosystem are euthanized, and in an effort to learn about this invasive species, all euthanized pythons are necropsied, during which time samples are collected. We analyzed the stable isotope ratios of carbon and nitrogen in muscle samples from 423 Burmese pythons euthanized and necropsied between 2003-05-01 and 2012-09-02, and after processing and QA/QC, we were left with isotope ratios for 410 samples, which we reported here. We used these data to estimate the size of the isotopic niche of the Burmese python, commonly measured using standard ellipse areas, or SEAs. To put these SEAs in context, we conducted a thorough literature [...]

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lit_results.csv 150.71 KB text/csv
lit_seas.csv 284.9 KB text/csv
python_isotope.csv 35.84 KB text/csv
Shapefile: py_regions.zip
py_regions.dbf 247 Bytes
py_regions.prj 390 Bytes
py_regions.qml 11.67 KB
py_regions.qpj 599 Bytes
py_regions.shp 452.28 KB
py_regions.shx 148 Bytes

Purpose

Burmese pythons are an invasive species in the Greater Everglades Ecosystem and have caused major declines in native mammal communities. Understanding how an invasive predator can impact an entire food web requires an understanding of its function niche, an important concept in ecology. The isotopic niche is a measurable proxy for the functional niche of an organism, and to measure it, we analyzed muscle tissue from Burmese pythons for stable isotopes of carbon and nitrogen. By collecting these data, we were able to estimate the size of the isotopic niche of the Burmese python. To put these niche sizes in context, we conducted a literature review to find published sizes of other isotopic niches. We report the papers we found during this literature review and the standard ellipse areas (SEAs, a measurement of the isotopic niche) here.

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  • USGS Data Release Products
  • USGS Wetland and Aquatic Research Center

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Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9QQ1KVH

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