Volunteer involvement in biological surveys is becoming common in conservation and
ecology, prompting questions on the quality of data collected in such surveys. In a …

An increase in the number of citizen science programs has prompted an examination of their
ability to provide data of sufficient quality. We tested the ability of volunteers relative to …

Monitoring of biodiversity and resource use by professional scientists is often costly and
hard to sustain, especially in developing countries, where financial resources are limited …

MARTIN THIEL ET AL. of simple methodologies to the capabilities of participants. Studies for
which volunteers needed to identify many different species and estimate their abundances …

Limited resources make it difficult to effectively document, monitor, and control invasive
species across large areas, resulting in large gaps in our knowledge of current and future …

The capability of satellite and airborne remote-sensing methods for mapping Caribbean
coral reefs is evaluated. Reef habitats were categorised into coarse, intermediate and fine …

Most coastal habitat mapping is conducted on an ad hoc basis with little consistency in
terminology and ambiguous documentation. These limitations obstruct interpretation and …

The global spread of nonindigenous species is recognized as a potent driver of change in
the sea with no sign of saturation. Interest in this topic has exponentially increased among …

Volunteers are potentially a huge scientific resource but there is scepticism among some
scientists about the reliability of data collected by inexperienced people. An assessment was …

Visual estimates of reef-fish length are a nondestructive and useful way of determining the
biomass, mean length, or length frequency of reef fish. Consequently, visual estimates of …