| Records |
| Author |
Strien, A.J.; Swaay, C.A.M.; Termaat, T. |
Title  |
Opportunistic citizen science data of animal species produce reliable estimates of distribution trends if analysed with occupancy models |
Type |
Journal Article |
| Year |
2013 |
Publication |
Journal of Applied Ecology |
Abbreviated Journal |
J Appl Ecol |
| Volume |
50 |
Issue |
6 |
Pages |
1450-1458 |
| Keywords |
Bayesian inference; citizen science; detection; distribution; hierarchical modelling; Jags; monitoring; site occupancy |
| Abstract |
Summary Many publications documenting large-scale trends in the distribution of species make use of opportunistic citizen data, that is, observations of species collected without standardized field protocol and without explicit sampling design. It is a challenge to achieve reliable estimates of distribution trends from them, because opportunistic citizen science data may suffer from changes in field efforts over time (observation bias), from incomplete and selective recording by observers (reporting bias) and from geographical bias. These, in addition to detection bias, may lead to spurious trends. We investigated whether occupancy models can correct for the observation, reporting and detection biases in opportunistic data. Occupancy models use detection/nondetection data and yield estimates of the percentage of occupied sites (occupancy) per year. These models take the imperfect detection of species into account. By correcting for detection bias, they may simultaneously correct for observation and reporting bias as well. We compared trends in occupancy (or distribution) of butterfly and dragonfly species derived from opportunistic data with those derived from standardized monitoring data. All data came from the same grid squares and years, in order to avoid any geographical bias in this comparison. Distribution trends in opportunistic and monitoring data were well-matched. Strong trends observed in monitoring data were rarely missed in opportunistic data. Synthesis and applications. Opportunistic data can be used for monitoring purposes if occupancy models are used for analysis. Occupancy models are able to control for the common biases encountered with opportunistic data, enabling species trends to be monitored for species groups and regions where it is not feasible to collect standardized data on a large scale. Opportunistic data may thus become an important source of information to track distribution trends in many groups of species. |
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John Wiley & Sons, Ltd |
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0021-8901 |
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doi: 10.1111/1365-2664.12158 |
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Equine Behaviour @ team @ |
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6437 |
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Harris, F. |
| Title |
On the Use of Windows for Harmonic Analysis with the Discrete Fourier Transform |
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1978 |
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Proc IEEE |
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66 |
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Equine Behaviour @ team @ Harris1978 |
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6486 |
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Kruska, D.C.T. |
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On the evolutionary significance of encephalization in some eutherian mammals: effects of adaptive radiation, domestication, and feralization |
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2005 |
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Brain Behav Evol |
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65 |
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Equine Behaviour @ team @ Kruska2005 |
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6235 |
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Frank, H.; Frank, M.G. |
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On the effects of domestication on canine social development and behavior |
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1982 |
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Appl Anim Ethol |
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8 |
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Equine Behaviour @ team @ Frank1982 |
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6259 |
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DUNCAN P et al, |
| Title |
On lactation and associated behaviour in natural herd of horses |
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Journal Article |
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1984 |
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Anim Behav |
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Hans Klingels Equine Reference List |
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32 |
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255-263 |
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Developmental changes in time spent suckling and related mother-foal behaviour are described in an unmanaged herd of Camargue horses. Male foals spent about 40% more time suckling than females during the first 8 weeks. Body weight did not differ between the sexes but time-budgets did: males grazed less and were more active. If pregnant, the typical multiparous mare nursed her foals for 35–40 weeks, males and females alike, and weaned them 15 weeks before the next foaling. Primiparae lactated longer and weaned closer to the next foaling by 5 weeks. The mares played an active role in regulating the time spent suckling in early, and particularly in late lactation. |
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from Prof. |
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1033 |
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Dugnol, B.; Fernández, C.; Galiano, G.; Velasco, J. |
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On a chirplet transform-based method applied to separating and counting wolf howls |
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Journal Article |
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2008 |
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Signal Process |
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88 |
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Equine Behaviour @ team @ Dugnol2008 |
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6466 |
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Lema, F.J.; Ribeiro, S.; Palacios, V. |
| Title |
Observations of wolves hunting fee-ranging horses in Iberia. |
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Journal Article |
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2022 |
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Carnivore Damage Prevention News |
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CDPNews |
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24 |
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1-9 |
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Equine Behaviour @ team @ |
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6681 |
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John, E.R.; Chesler, P.; Bartlett, F.; Victor, I. |
| Title |
Observation Learning in Cats |
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Journal Article |
| Year |
1968 |
Publication |
Science |
Abbreviated Journal |
Science |
| Volume |
159 |
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3822 |
Pages |
1489-1491 |
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In two experiments cats acquired a stimulus-controlled approach or avoidance response by observational or conventional shaping procedures. Observer cats acquired the avoidance response (hurdle jumping in response to a buzzer stimulus) significantly faster and made fewer errors than cats that were conventionally trained. Observer cats acquired the approach response (lever pressing for food in response to a light stimulus) with significantly fewer errors than cats that were conventionally trained. In some cases, observer cats committed one or no errors while reaching criterion. |
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Equine Behaviour @ team @ |
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6422 |
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Crowell-Davis, S.L. |
| Title |
Nursing behaviour and maternal aggression among Welsh ponies (Equus caballus) |
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Journal Article |
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1985 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl Anim Behav Sci |
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14 |
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1 |
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11-25 |
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Nursing behaviour and related aggression of mare-foal pairs was studied from birth (n = 21) to 24 weeks of age (n = 15) of the foal. Foals exhibited a decreasing length and frequency of nursing as they grew older. Mares rarely aggressed against their foals during nursing in the foal's first 4 weeks of life, but did so increasingly through Weeks 13-16, after which the rate of aggression during nursing decreased. Mares terminated nursing primarily by moving away, and were most likely to do so during the foal's first 4 weeks of life. They became gradually less likely to do so as the foal grew older. It was concluded that mares sometimes flex their hind limb on the side opposite the foal during nursing in order to conserve energy in a situation in which they would be remaining still anyway. There was no difference between colts and fillies in the frequency or duration of nursing or in the frequency with which their mothers aggressed against them or terminated nursing. |
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0168-1591 |
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no |
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Equine Behaviour @ team @ |
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6504 |
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| Author |
Riede, T.; Herzel, H.; Mehwald, D.; Seidner, W.; Trumler, E.; Böhme, G. |
| Title |
Nonlinear phenomena in the natural howling of a dog-wolf mix |
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Journal Article |
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2000 |
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J Acoust Soc Am |
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108 |
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Equine Behaviour @ team @ Riede2000 |
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6484 |
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