Aim Recent advances in the availability of species distributional and high‐resolution
environmental data have facilitated the investigation of species richness–environment …

Direct observation, through surveys, underpins nearly all aspects of environmental sciences.
Survey design theory has evolved to make sure that sampling is as efficient as possible …

The value of an ecological indicator is no better than the uncertainty associated with its
estimate. Nevertheless, indicator uncertainty is seldom estimated, even though legislative …

Most methods for modeling species distributions from occurrence records require additional
data representing the range of environmental conditions in the modeled region. These data …

NOTES AND COMMENTS 91 emerge? Alternatively, one may have only single-year surveys
from single plots at a variety of locations, as is usually the case. One assumes (or hopes) …

Environmental sampling can be difficult and expensive to carry out. Those taking the
samples would like to integrate their knowledge of the system of study or their judgment …

Sampling theory considers how methods for selection of a subset of units from a finite
population (a sample) affect the accuracy of estimates of descriptive population parameters …

Presence/absence data and presence‐only data are the two customary sources for learning
about species distributions over a region. We present an ambitious agenda with regard to …

Assessing the abundance of biological populations is a central technical challenge in
ecology, whether fundamental or applied. Although the question faced is simple, it is actually …

When conducting field studies, it is common for ecologists to choose the locations of
sampling units arbitrarily at the time sampling occurs, rather than using a properly …