@article{fdi:010062622,
  title = {{A}n automated approach towards measuring time-activity budgets in colonial seabirds},
  author = {{R}ishworth, {G}. {M}. and {T}remblay, {Y}ann and {G}reen, {D}. {B}. and {P}istorius, {P}. {A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{S}eabird proxies have the potential to act as useful and cost-effective indicators of the state of the marine environment. {S}eabird time-activity budgets, in particular, reflect short-term changes in prey conditions. {W}e tested an automated technique for long-term continuous recording of {C}ape gannet, {M}orus capensis, time-activity budgets using coded very high frequency ({VHF}) transmitters allowing for simultaneous monitoring of a large sample of study birds. {R}adiotransmitters attached to leg-rings had no impact on adult foraging trip and nest attendance durations, breeding success or chick growth. {F}urthermore, frequencies of nest attendance and foraging trip durations estimated by the {VHF} logging system were no different to those estimated from hourly direct observations. {U}sing time-depth recorders, the relationship between the time that birds rested on the sea surface in relation to foraging trip duration was assessed. {T}rip duration during chick rearing was clearly an accurate proxy for foraging effort. {T}he {VHF} monitoring system provides a simple method of accurately assessing the time-activity budgets of colonial seabirds, which can be expanded to a range of other colonially breeding taxa. {I}n the case of seabirds, this approach can potentially provide sensitive, real-time indicators of prey abundance for fisheries management.},
  keywords = {automated monitoring ; bioindicator ; {C}ape gannet ; foraging effort ; very ; high frequency},
  booktitle = {},
  journal = {{M}ethods in {E}cology and {E}volution},
  volume = {5},
  numero = {9},
  pages = {854--863},
  ISSN = {2041-210{X}},
  year = {2014},
  DOI = {10.1111/2041-210x.12213},
  URL = {https://www.documentation.ird.fr/hor/fdi:010062622},
}