Sample design effects in landscape genetics

Sara J. Oyler-McCance, Bradley C. Fedy, Erin L. Landguth

Research output: Contribution to journalArticlepeer-review

78 Scopus citations


An important research gap in landscape genetics is the impact of different field sampling designs on the ability to detect the effects of landscape pattern on gene flow. We evaluated how five different sampling regimes (random, linear, systematic, cluster, and single study site) affected the probability of correctly identifying the generating landscape process of population structure. Sampling regimes were chosen to represent a suite of designs common in field studies. We used genetic data generated from a spatially-explicit, individual-based program and simulated gene flow in a continuous population across a landscape with gradual spatial changes in resistance to movement. Additionally, we evaluated the sampling regimes using realistic and obtainable number of loci (10 and 20), number of alleles per locus (5 and 10), number of individuals sampled (10-300), and generational time after the landscape was introduced (20 and 400). For a simulated continuously distributed species, we found that random, linear, and systematic sampling regimes performed well with high sample sizes (>200), levels of polymorphism (10 alleles per locus), and number of molecular markers (20). The cluster and single study site sampling regimes were not able to correctly identify the generating process under any conditions and thus, are not advisable strategies for scenarios similar to our simulations. Our research emphasizes the importance of sampling data at ecologically appropriate spatial and temporal scales and suggests careful consideration for sampling near landscape components that are likely to most influence the genetic structure of the species. In addition, simulating sampling designs a priori could help guide filed data collection efforts

Original languageEnglish
Pages (from-to)275-285
Number of pages11
JournalConservation Genetics
Issue number2
StatePublished - Apr 2013


  • Causal modeling
  • Cluster sampling
  • Isolation-by-barrier
  • Isolation-by-distance
  • Isolation-by-landscape resistance
  • Linear sampling
  • Partial Mantel test
  • Random sampling
  • Simulation modeling
  • Systematic sampling


Dive into the research topics of 'Sample design effects in landscape genetics'. Together they form a unique fingerprint.

Cite this