Tags » Experimental Design

Should we account for imperfect detection when evaluating patterns in fish abundance?

Our recent paper sheds light on the issue of imperfect detection when evaluating patterns in fish abundance. We synthesize the information from numerous studies to develop a realistic expectation of when and how the detection probability should vary when sampling fish. 827 more words

Access to credits improves food security and production in small holder households of Jinotega, Nicaragua

Many of the Central American families that produce the coffee we love to brew suffer from poverty and chronic food insecurity. In 2016, R4Dsct conducted a food security assessment within the “Mejoramiento de la Seguridad Alimentaria de Productores y Productoras de Café Asociados a UCA SOPPEXCCA R.L.” program. 716 more words

Monitoring And Evaluation

UCL Summer School in English Corpus Linguistics 2017

I am pleased to announce the fifth annual Summer School in English Corpus Linguistics to be held at University College London from 5-7 July. 226 more words


Virtual ecologist module #3: occupancy model power analysis

The Virtual Ecologist refers to the practice of simulating complete experimental designs, that is, the ecological process, the observation process and the statistical analysis. This simulation tool can be used to evaluate trade-offs among experimental design components when design complexity prevents the use of traditional power analysis. 1,799 more words

Species richness estimators can give misleading results when determining patterns in biodiversity

Some years back I was challenged with the questions of how to track fish species richness through time in a selection of freshwater lakes in Florida. 634 more words

It's calibration time!

Published 27 February 2017 by Andy Connelly.


For most measurements in analytical chemistry some form of calibration curve is required [1]. The better the calibration of the instrument or method the more accuracte and precise are the results that you can achieve. 1,390 more words