EstimateS 8.0.0 features Chao's Sørensen & Jaccard similarity estimators (Ecology Letters 8:148-159, 2005), an option for individual randomization export, usability improvements, and a new 4D Engine.

EstimateS 8.0.0 is ready to download now

Between 1997 and November, 2006, EstimateS was downloaded moret than 20,000 times by users in more than 100 countries around the globe. Currently there are about 25 downloads per day. The new version builds on the familiar tools of its predecessors.

New in EstimateS 8.0.0:

  • Built around a new version of 4D Engine that ensures compatibility with the latest operating systems.
  • Option to export results from n individual randomizations to a text file, allowing computation of precision, accuracy, and other analyses.
  • Improved detection and reporting on input file problems.
  • Corrects all known bugs in previous versions, including an error in confidence interval computations for Chao1 and Chao2 (with generally minor effects).

New in EstimateS 7.5.x and 7.0.0:

  • Computes Chao's Sørensen and Jaccard similarity estimators (Ecology Letters 8:148-159, 2005).
  • Computes asymmetric (log-transformed) confidence intervals for Chao1 andChao2.
  • Computes Colwell and Mao's smooth species accumulation curves (sample-based rarefaction curves) with true confidence intervals, based on new, analytical formulas (Ecology 85, 2717-2727, 2004).
  • Runs native under Windows XP or Mac OS X (certified for Panther), with native user interface on each platform.
  • European number format detection.

With these classic features of previous versions:

  • Computes a wide range of species richness estimators for abundance and incidence (presence/absence) data (Chao, Jackknife, ICE, ACE and others).
  • Computes diversity indices (Shannon, Simpson, Fisher's alpha).
  • All richness estimators and diversity indices are computed for every level of sample accumulation, averaged over resamplings.
  • Choice of resampling with or without replacement.
  • Computes Chao's shared species estimator for sample pairs.
  • Computes classic Jaccard, Sørensen, Bray-Curtis, and Morista-Horn similarity indices for sample pairs.

Click here to download EstimateS 8.0.0 now.

©2006
Robert K. Colwell