| Records |
| Author |
Meriggi, A.; Dagradi, V.; Dondina, O.; Perversi, M.; Milanesi, P.; Lombardini, M.; Raviglione, S.; Repossi, A. |
| Title |
Short-term responses of wolf feeding habits to changes of wild and domestic ungulate abundance in Northern Italy |
Type |
Journal Article |
| Year |
2014 |
Publication |
Ethology Ecology & Evolution |
Abbreviated Journal |
Ethology Ecology & Evolution |
| Volume |
27 |
Issue |
4 |
Pages |
389-411 |
| Keywords |
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| Abstract |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
Taylor & Francis |
Place of Publication |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0394-9370 |
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Conference |
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Notes  |
doi: 10.1080/03949370.2014.986768 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
6688 |
| Permanent link to this record |
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| 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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| Publisher |
John Wiley & Sons, Ltd |
Place of Publication |
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| ISSN |
0021-8901 |
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| Notes |
doi: 10.1111/1365-2664.12158 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
6437 |
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| Author |
Wasser, S.K.; Keim, J.L.; Taper, M.L.; Lele, S.R. |
| Title |
The influences of wolf predation, habitat loss, and human activity on caribou and moose in the Alberta oil sands |
Type |
Journal Article |
| Year |
2011 |
Publication |
Frontiers in Ecology and the Environment |
Abbreviated Journal |
Frontiers in Ecology and the Environment |
| Volume |
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Issue |
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Pages |
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| Abstract |
Woodland caribou (Rangifer tarandus caribou) and moose (Alces alces) populations in the Alberta oil sands region of western Canada are influenced by wolf (Canis lupus) predation, habitat degradation and loss, and anthropogenic activities. Trained domestic dogs were used to locate scat from caribou, moose, and wolves during winter surges in petroleum development. Evidence obtained from collected scat was then used to estimate resource selection, measure physiological stress, and provide individual genetic identification for precise mark–recapture abundance estimates of caribou, moose, and wolves. Strong impacts of human activity were indicated by changes in resource selection and in stress and nutrition hormone levels as human-use measures were added to base resource selection models (including ecological variables, provincial highways, and pre-existing linear features with no human activity) for caribou. Wolf predation and resource selection so heavily targeted deer (Odocoileus virginiana or O hemionus) that wolves appeared drawn away from prime caribou habitat. None of the three examined species showed a significant population change over 4 years. However, caribou population estimates were more than double those of previous approximations for this area. Our findings suggest that modifying landscape-level human-use patterns may be more effective at managing this ecosystem than intentional removal of wolves. |
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| Publisher |
Ecological Society of America |
Place of Publication |
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Series Issue |
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Edition |
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| ISSN |
1540-9295 |
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| Notes |
doi: 10.1890/100071 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
5397 |
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| Author |
Lima, S.L. |
| Title |
Predation Risk and Unpredictable Feeding Conditions: Determinants of Body Mass in Birds |
Type |
Journal Article |
| Year |
1986 |
Publication |
Ecology |
Abbreviated Journal |
Ecology |
| Volume |
67 |
Issue |
2 |
Pages |
377-385 |
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| Notes |
doi: 10.2307/1938580 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
5141 |
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| Author |
ANGLE M, et al |
| Title |
Androgenes in feral stallions |
Type |
Conference Volume |
| Year |
1979 |
Publication |
Symposium on the Ecology and Behavior of wild and feral Equids |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
31-38 |
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| Publisher |
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Place of Publication |
Laramie |
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| Notes |
from Prof. Hans Klingels Equine Reference List |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
641 |
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| Author |
Asa Cs, |
| Title |
Sociosexual behavior in the domestic pony |
Type |
Conference Article |
| Year |
1979 |
Publication |
Symposium on the Ecology and Behavior of Wild and Feral Equids |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
59-70 |
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| Publisher |
Univ. of Wyoming. |
Place of Publication |
Laramie |
Editor |
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Conference |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
no |
| Call Number |
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Serial |
900 |
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| Author |
Conley W, |
| Title |
The potential for increase in horse and ass populations: A theoretical analysis |
Type |
Journal Article |
| Year |
1979 |
Publication |
Proceedings of a Conference on the Ecology and Behavior of Feral Equids |
Abbreviated Journal |
Symp Ecol and Behav of wild and feral Equids, Laramie |
| Volume |
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Issue |
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Pages |
221-234 |
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Place of Publication |
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Editor |
R.H. Denniston |
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Expedition |
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Conference |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
no |
| Call Number |
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Serial |
991 |
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| Author |
Ginsberg, J. R; Rubenstein, D. I. |
| Title |
Sperm competiton and variation in zebra mating behaviour |
Type |
Journal Article |
| Year |
1990 |
Publication |
Behavioral Ecology and Sociobiology |
Abbreviated Journal |
Behav. Ecol. Sociobiol. |
| Volume |
26 |
Issue |
6 |
Pages |
427-434 |
| Keywords |
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| Abstract |
Data are presented on the breeding behavior of two zebra species to test whether intra- and interspecific variation in male reproductive behavior and physiology are correlated with differences in female promiscuity. In one species, plains zebra (Equus burchelli) females live in closed membership single male groups and mate monandrously. In the other species, the Grevy's zebra (E. grevyi) females live in groups whose membership is much more temporary. Typically, associations with individual males are brief and mating is polyandrous. However, some females – those having just given birth – reside with one male for long periods, mating monandrously. These differences in female mating behavior generate variability in the potential for sperm competition. We show that behavioral differences in male investment in reproductive activities correlate with the potential for sperm competition. When mating with promiscuous mares, Grevy's zebra stallions made a greater investment in reproductive behavior (calling, mounting, ejaculations) than did stallions of either species when mating with monandrous females. The evolution of large testes size in the Grevy's zebra, when compared to the congeneric plains zebra, horse, and mountain zebra, allows for this increased investment. |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
yes |
| Call Number |
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Serial |
1113 |
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| Author |
Keiper Rr, |
| Title |
Population dynamics of feral ponies. |
Type |
Conference Volume |
| Year |
1979 |
Publication |
Symposium on the Ecology and Behavior of wild and feral Equids |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
175-184 |
| Keywords |
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| Abstract |
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Thesis |
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| Publisher |
Symposium on the Ecology and Behavior of wild and feral Equids |
Place of Publication |
Laramie |
Editor |
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Summary Language |
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Original Title |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
no |
| Call Number |
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Serial |
1252 |
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| Author |
Klingel H, |
| Title |
A Comparison of the Social Organization of the Equids. in Denniston RH (ed) |
Type |
Conference Volume |
| Year |
1980 |
Publication |
Symposium on the Ecology and Behavior of Wild and Feral Equids, Laramie 1979 |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
23-30 |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
no |
| Call Number |
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Serial |
1315 |
| Permanent link to this record |
