Resources
Where to go after the eight classes
Reading, session by session
The papers below are the ones worth reading in full.
Session 1 — Foundations
- Nathan R, Getz WM, Revilla E, Holyoak M, Kadmon R, Saltz D, Smouse PE (2008). A movement ecology paradigm for unifying organismal movement research. PNAS 105:19052–19059. doi:10.1073/pnas.0800375105 — the spine of the course.
- Kays R, Crofoot MC, Jetz W, Wikelski M (2015). Terrestrial animal tracking as an eye on life and planet. Science 348:aaa2478. doi:10.1126/science.aaa2478 — the opening bookend.
- Hebblewhite M, Haydon DT (2010). Distinguishing technology from biology: a critical review of the use of GPS telemetry data in ecology. Phil Trans R Soc B 365:2303–2312. doi:10.1098/rstb.2010.0087
- Laundré JW, Hernández L, Altendorf KB (2001). Wolves, elk, and bison: reestablishing the “landscape of fear” in Yellowstone National Park, U.S.A. Canadian Journal of Zoology 79:1401–1409.
- Portugal SJ, White CR (2018). Miniaturization of biologgers is not alleviating the 5% rule. Methods Ecol Evol 9:1662–1666. doi:10.1111/2041-210X.13013
- Laube P, Purves RS (2011). How fast is a cow? Cross-scale analysis of movement data. Transactions in GIS 15:401–418 — the sampling-interval problem, quantified.
Session 2 — Spatial data in R
- Geocomputation with R — Lovelace, Nowosad, Muenchow. Free, excellent, the default recommendation.
- Spatial Data Science with applications in R — Pebesma & Bivand, by the author of
sf. - rspatial.org — Hijmans, the
terrareference. - Pettorelli N, Vik JO, Mysterud A, Gaillard J-M, Tucker CJ, Stenseth NC (2005). Using the satellite-derived NDVI to assess ecological responses to environmental change. TREE 20:503–510. doi:10.1016/j.tree.2005.05.011
- Data portals: Copernicus Browser (Sentinel), USGS EarthExplorer (Landsat), NASA AppEEARS, Movebank Env-DATA.
Session 3 — From fixes to trajectories
- Calenge C (2006). The package “adehabitat” for the R software: a tool for the analysis of space and habitat use by animals. Ecological Modelling 197:516–519.
- Signer J, Fieberg J, Avgar T (2019). Animal movement tools (
amt): R package for managing tracking data and conducting habitat selection analyses. Ecol Evol 9:880–890. doi:10.1002/ece3.4823
Session 4 — Quantifying movement
- Benhamou S (2004). How to reliably estimate the tortuosity of an animal’s path: straightness, sinuosity, or fractal dimension? J Theor Biol 229:209–220.
- Turchin P (1996). Fractal analyses of animal movement: a critique. Ecology 77:2086–2090.
- Fauchald P, Tveraa T (2003). Using first-passage time in the analysis of area-restricted search and habitat selection. Ecology 84:282–288.
- Bunnefeld N, Börger L, van Moorter B, Rolandsen CM, Dettki H, Solberg EJ, Ericsson G (2011). A model-driven approach to quantify migration patterns: individual, regional and yearly differences. J Anim Ecol 80:466–476.
- Gurarie E, Andrews RD, Laidre KL (2009). A novel method for identifying behavioural changes in animal movement data. Ecology Letters 12:395–408 — behavioural change-point analysis (
bcpa). - Edelhoff H, Signer J, Balkenhol N (2016). Path segmentation for beginners: an overview of current methods for detecting changes in animal movement patterns. Movement Ecology 4:21.
Session 5 — Movement models and simulation
- Codling EA, Plank MJ, Benhamou S (2008). Random walk models in biology. J R Soc Interface 5:813–834. doi:10.1098/rsif.2008.0014
- Viswanathan GM, Afanasyev V, Buldyrev SV, Murphy EJ, Prince PA, Stanley HE (1996). Lévy flight search patterns of wandering albatrosses. Nature 381:413–415.
- Edwards AM et al. (2007). Revisiting Lévy flight search patterns of wandering albatrosses, bumblebees and deer. Nature 449:1044–1048.
- Benhamou S (2007). How many animals really do the Lévy walk? Ecology 88:1962–1969.
- Clauset A, Shalizi CR, Newman MEJ (2009). Power-law distributions in empirical data. SIAM Review 51:661–703 — how to fit a power law properly.
- Humphries NE et al. (2010). Environmental context explains Lévy and Brownian movement patterns of marine predators. Nature 465:1066–1069.
Session 6 — Home ranges
- Powell RA, Mitchell MS (2012). What is a home range? J Mammal 93:948–958. doi:10.1644/11-MAMM-S-177.1
- Worton BJ (1989). Kernel methods for estimating the utilization distribution in home-range studies. Ecology 70:164–168.
- Horne JS, Garton EO, Krone SM, Lewis JS (2007). Analyzing animal movements using Brownian bridges. Ecology 88:2354–2363.
- Fleming CH, Fagan WF, Mueller T, Olson KA, Leimgruber P, Calabrese JM (2015). Rigorous home range estimation with movement data: a new autocorrelated kernel density estimator. Ecology 96:1182–1188. doi:10.1890/14-2010.1
- Calabrese JM, Fleming CH, Gurarie E (2016). ctmm: an R package for analyzing animal relocation data as a continuous-time stochastic process. Methods Ecol Evol 7:1124–1132.
- Börger L, Dalziel BD, Fryxell JM (2008). Are there general mechanisms of animal home range behaviour? A review and prospects for future research. Ecology Letters 11:637–650.
Session 7 — Habitat selection
- Fortin D, Beyer HL, Boyce MS, Smith DW, Duchesne T, Mao JS (2005). Wolves influence elk movements: behavior shapes a trophic cascade in Yellowstone National Park. Ecology 86:1320–1330 — the step selection function.
- Lele SR, Keim JL (2006). Weighted distributions and estimation of resource selection probability functions. Ecology 87:3021–3028.
- Avgar T, Potts JR, Lewis MA, Boyce MS (2016). Integrated step selection analysis: bridging the gap between resource selection and animal movement. Methods Ecol Evol 7:619–630. doi:10.1111/2041-210X.12528
- Avgar T, Lele SR, Keim JL, Boyce MS (2017). Relative selection strength: quantifying effect size in habitat- and step-selection inference. Ecol Evol 7:5322–5330.
- Fieberg J, Signer J, Smith B, Avgar T (2021). A “how-to” guide for interpreting parameters in habitat-selection analyses. J Anim Ecol 90:1027–1043. doi:10.1111/1365-2656.13441 — the single most useful paper in this course.
- Muff S, Signer J, Fieberg J (2020). Accounting for individual-specific variation in habitat-selection studies. J Anim Ecol 89:80–92.
- LaPoint S, Gallery P, Wikelski M, Kays R (2013). Animal behavior, cost-based corridor models, and real corridors. Landscape Ecology 28:1615–1630 — the fisher data.
Books
- Hooten MB, Johnson DS, McClintock BT, Morales JM (2017). Animal Movement: Statistical Models for Telemetry Data. CRC Press. The rigorous reference. Heavy on maths, worth it.
- Fieberg J (2024). Statistics for Ecologists: A Frequentist and Bayesian Treatment of Modern Regression Models — free online, with excellent habitat-selection chapters.
- Cagnacci F, Boitani L, Powell RA, Boyce MS, eds. (2010). Special issue on GPS telemetry, Phil Trans R Soc B 365(1550) — still the best single collection of overviews.
Software and communities
amt |
Tracks, steps, resampling, RSF/SSF — used in most sessions |
adehabitatLT |
Trajectories (ltraj), NSD, first-passage time |
bcpa |
Behavioural change-point analysis |
move2 |
Movebank access and the modern move successor |
ctmm |
Continuous-time models, AKDE. Has a point-and-click app. |
momentuHMM |
Hidden Markov models with covariates and multiple data streams |
adehabitatHR |
Classic home range estimators |
sf / terra |
The spatial foundation |
| AniMove | Annual summer school — the best training available in this field |
| Movebank | Data repository; also hosts Env-DATA annotation |
Getting help
When code breaks, in this order:
- Read the error message. Genuinely. Most R errors name the object and the function that failed.
?function_nameand the package vignettes (browseVignettes("amt")) — these are written by the people who wrote the code.- r-spatial on Stack Overflow and the
amtGitHub issues. - Ask me — but bring a reproducible example: the smallest piece of code plus the smallest piece of data that reproduces the problem. Building that example solves the problem about half the time by itself.