The GPS craze Latham, A. David M.; Latham, M. Cecilia; Anderson, Dean P. ...
New Zealand journal of ecology,
01/2015, Letnik:
39, Številka:
1
Journal Article
Recenzirano
Odprti dostop
GPS and satellite technology for studies on wildlife have improved substantially over the past decade. It is now possible to collect fine-scale location data from migratory animals, animals that have ...previously been too small to deploy GPS devices on, and other difficult-to-study species. Often researchers and managers have formatted well-defined ecological or conservation questions prior to deploying GPS on animals, whereas other times it is arguably done simply because the technology is now available to do so. We review and discuss six important interrelated questions that should be addressed when planning a study requiring location data. Answers will clarify whether GPS technology is required and whether its use would increase efficiency of data collection and learning from location data. Specifically, what are the required: (1) ecological question(s); (2) frequency and duration of data collection; (3) sample size; (4) hardware (VHF or GPS or satellite) and accessories; (5) environmental data; and (6) data-management and analysis procedures? This approach increases the chance that the appropriate technology will be deployed, budgets will be realistic, and data will be sufficient (but not excessive) to answer the ecological questions of interest. The expected results are important advances in ecological science and evidence-based management decisions.
GPS and satellite technology for studies on wildlife have improved substantially over the past decade. It is now possible to collect fine-scale location data from migratory animals, animals that have ...previously been too small to deploy GPS devices on, and other difficult-to-study species. Often researchers and managers have formatted well-defined ecological or conservation questions prior to deploying GPS on animals, whereas other times it is arguably done simply because the technology is now available to do so. We review and discuss six important interrelated questions that should be addressed when planning a study requiring location data. Answers will clarify whether GPS technology is required and whether its use would increase efficiency of data collection and learning from location data. Specifically, what are the required: (1) ecological question(s); (2) frequency and duration of data collection; (3) sample size; (4) hardware (VHF or GPS or satellite) and accessories; (5) environmental data; and (6) data-management and analysis procedures? This approach increases the chance that the appropriate technology will be deployed, budgets will be realistic, and data will be sufficient (but not excessive) to answer the ecological questions of interest. The expected results are important advances in ecological science and evidence-based management decisions.
A&A 671, A154 (2023) The planetary system around the naked-eye star $\nu^2$ Lupi (HD 136352;
TOI-2011) is composed of three exoplanets with masses of 4.7, 11.2, and 8.6
Earth masses. The TESS and ...CHEOPS missions revealed that all three planets are
transiting and have radii straddling the radius gap separating volatile-rich
and volatile-poor super-earths. Only a partial transit of planet d had been
covered so we re-observed an inferior conjunction of the long-period 8.6
Earth-mass exoplanet $\nu^2$ Lup d with the CHEOPS space telescope. We
confirmed its transiting nature by covering its whole 9.1 h transit for the
first time. We refined the planet transit ephemeris to P = 107.1361
(+0.0019/-0.0022) days and Tc = 2,459,009.7759 (+0.0101/-0.0096) BJD_TDB,
improving by ~40 times on the previously reported transit timing uncertainty.
This refined ephemeris will enable further follow-up of this outstanding
long-period transiting planet to search for atmospheric signatures or explore
the planet's Hill sphere in search for an exomoon. In fact, the CHEOPS
observations also cover the transit of a large fraction of the planet's Hill
sphere, which is as large as the Earth's, opening the tantalising possibility
of catching transiting exomoons. We conducted a search for exomoon signals in
this single-epoch light curve but found no conclusive photometric signature of
additional transiting bodies larger than Mars. Yet, only a sustained follow-up
of $\nu^2$ Lup d transits will warrant a comprehensive search for a moon around
this outstanding exoplanet.
