Articles and Explanations

Proximity data-loggers increase the quantity and quality of social network data
A paper by Ryder et al. published online in August 2012 in Biology Letters, providing proof of concept for using proximity data-logging to quantify the frequency of social interactions, construct weighted networks and characterize variation in the social behaviour of a lek-breeding bird, the wire-tailed manakin, Pipra filicaud.

Landscape Movements of Migratory Birds and Bats Reveal an Expanded Scale of Stopover
An article by Taylor et al. published in November 2011 in PLoSONE6(11), showing that many apparent nocturnal departures from stopover sites are not a resumption of migration in the strictest sense, but are instead relocations that represent continued stopover at a broader spatial scale.

Lotek Archival Tags used to track the Lake Erie water snake
An article on the TerraDaily web site about a University of Cincinnati study that used Lotek Archival Tags on Lake Erie water snakes (Nerodia sipedon insularum), a "proof of concept that use of LATs in reptiles is a viable research method". Read the abstract here.

Comparative Performance of Current-generation Geolocating Archival Tags
A paper by Kurt M. Schaefer and Daniel W. Fuller evaluating the performance of the Lotek LTD 2310 archival tag.

Migratory shearwaters integrate oceanic resources across the Pacific Ocean in an endless summer
A paper by Scott A. Shaffer et al. published in PNAS in August 2006, with data from LTD 2400 archival tags showing that sooty shearwaters "fly across the entire Pacific Ocean in a figure-eight pattern while traveling 64,037 ± 9,779 km roundtrip, the longest animal migration ever recorded electronically."

An advance in geolocation by light
This paper describes a new threshold-free method of geolocation using sun light levels. The approach promises to offer many advantages over traditional threshold methods used today.

Correcting light at depth
A paper on inferring the surface irradiance from measurements made at depth with Lotek LTD 2000 geolocation archival tags.

Blue twilight in a simple atmosphere
When doing measurements for geolocation, especially in ocean fish, there is good reason to confine one's attention to blue light. This is a paper on the advantages (to guide system design) of strong absorption and scattering of blue light in the atmosphere.

Locating tuna in the open ocean
A paper describing the use of LTD 2000 geolocation archival tags to determine daily latitude and longitude estimations based on observed sunlight levels.

Frequency choice for radio telemetry: the HF vs. VHF conundrum
An overview of the 7 individual components of a radio telemetry system, examining the role played by each in system optimization.