Records |
Author |
Burton, A.C.; Neilson, E.; Moreira, D.; Ladle, A.; Steenweg, R.; Fisher, J.T.; Bayne, E.; Boutin, S. |
Title |
REVIEW: Wildlife camera trapping: a review and recommendations for linking surveys to ecological processes |
Type |
Journal Article |
Year |
2015 |
Publication |
Journal of Applied Ecology |
Abbreviated Journal |
J Appl Ecol |
Volume |
52 |
Issue |
3 |
Pages |
675-685 |
Keywords |
animal movement; camera trap; capture-recapture; density estimation; imperfect detection; mammal monitoring; occupancy model; relative abundance; sampling error; wildlife survey methodology |
Abstract |
Summary Reliable assessment of animal populations is a long-standing challenge in wildlife ecology. Technological advances have led to widespread adoption of camera traps (CTs) to survey wildlife distribution, abundance and behaviour. As for any wildlife survey method, camera trapping must contend with sources of sampling error such as imperfect detection. Early applications focused on density estimation of naturally marked species, but there is growing interest in broad-scale CT surveys of unmarked populations and communities. Nevertheless, inferences based on detection indices are controversial, and the suitability of alternatives such as occupancy estimation is debatable. We reviewed 266 CT studies published between 2008 and 2013. We recorded study objectives and methodologies, evaluating the consistency of CT protocols and sampling designs, the extent to which CT surveys considered sampling error, and the linkages between analytical assumptions and species ecology. Nearly two-thirds of studies surveyed more than one species, and a majority used response variables that ignored imperfect detection (e.g. presence?absence, relative abundance). Many studies used opportunistic sampling and did not explicitly report details of sampling design and camera deployment that could affect conclusions. Most studies estimating density used capture?recapture methods on marked species, with spatially explicit methods becoming more prominent. Few studies estimated density for unmarked species, focusing instead on occupancy modelling or measures of relative abundance. While occupancy studies estimated detectability, most did not explicitly define key components of the modelling framework (e.g. a site) or discuss potential violations of model assumptions (e.g. site closure). Studies using relative abundance relied on assumptions of equal detectability, and most did not explicitly define expected relationships between measured responses and underlying ecological processes (e.g. animal abundance and movement). Synthesis and applications. The rapid adoption of camera traps represents an exciting transition in wildlife survey methodology. We remain optimistic about the technology's promise, but call for more explicit consideration of underlying processes of animal abundance, movement and detection by cameras, including more thorough reporting of methodological details and assumptions. Such transparency will facilitate efforts to evaluate and improve the reliability of camera trap surveys, ultimately leading to stronger inferences and helping to meet modern needs for effective ecological inquiry and biodiversity monitoring. |
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John Wiley & Sons, Ltd |
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0021-8901 |
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https://doi.org/10.1111/1365-2664.12432 |
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Equine Behaviour @ team @ |
Serial |
6703 |
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Author |
Steinhoff-Wagner, J. |
Title |
Coat Clipping of Horses: A Survey |
Type |
Journal Article |
Year |
2019 |
Publication |
Journal of Applied Animal Welfare Science |
Abbreviated Journal |
Journal of Applied Animal Welfare Science |
Volume |
22 |
Issue |
2 |
Pages |
171-187 |
Keywords |
Equine, thermoregulation, shaving, winter pelage removal |
Abstract |
Coat clipping is a common practice in sport horses; however, timing, purpose, technique, and clips vary widely, as do the management and feeding of a clipped horse. The aim of this study was to collect data regarding common clipping practices. A questionnaire was published online in Germany and contained 32 questions. Four hundred ninety-eight people answered at least one question, and 373 individuals (7% male, 93% female; ages 14–59 years) completed all the questions. Clipped horses were predominantly used as sport horses (68%), and they were either clipped immediately before or during the winter season (88%) or year-round (7%). The clipping date was scheduled according to hair length (52%), sweat amount (47%), and drying time (47%). Participants primarily used two clips: the hunter clip and the blanket clip, both without clipping the head (23% each). The majority of the clipped horses wore a blanket day and night (> 90%). Future studies with observations in the field are needed to support survey data in an effort to develop welfare recommendations for clipping practices utilized with horses. |
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Routledge |
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1088-8705 |
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doi: 10.1080/10888705.2018.1454319 |
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Equine Behaviour @ team @ |
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6613 |
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Author |
Hartmann, E.; Bøe, K.E.; Jørgensen, G.H.M.; Mejdell, C.M.; Dahlborn, K. |
Title |
Management of horses with focus on blanketing and clipping practices reported by members of the Swedish and Norwegian equestrian community1 |
Type |
Journal Article |
Year |
2017 |
Publication |
Journal of Animal Science |
Abbreviated Journal |
J Anim Sci |
Volume |
95 |
Issue |
3 |
Pages |
1104-1117 |
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Abstract |
Limited information is available on the extent to which blankets are used on horses and the owners' reasoning behind clipping the horse's coat. Research on the effects of those practices on horse welfare is scarce but results indicate that blanketing and clipping may not be necessary from the horse's perspective and can interfere with the horse's thermoregulatory capacities. Therefore, this survey collected robust, quantitative data on the housing routines and management of horses with focus on blanketing and clipping practices as reported by members of the Swedish and Norwegian equestrian community. Horse owners were approached via an online survey, which was distributed to equestrian organizations and social media. Data from 4,122 Swedish and 2,075 Norwegian respondents were collected, of which 91 and 84% of respondents, respectively, reported using blankets on horses during turnout. Almost all respondents owning warmblood riding horses used blankets outdoors (97% in Sweden and 96% in Norway) whereas owners with Icelandic horses and coldblood riding horses used blankets significantly less (P < 0.05). Blankets were mainly used during rainy, cold, or windy weather conditions and in ambient temperatures of 10°C and below. The horse's coat was clipped by 67% of respondents in Sweden and 35% of Norwegian respondents whereby owners with warmblood horses and horses primarily used for dressage and competition reported clipping the coat most frequently. In contrast to scientific results indicating that recovery time after exercise increases with blankets and that clipped horses have a greater heat loss capacity, only around 50% of respondents agreed to these statements. This indicates that evidence-based information on all aspects of blanketing and clipping has not yet been widely distributed in practice. More research is encouraged, specifically looking at the effect of blankets on sweaty horses being turned out after intense physical exercise and the effect of blankets on social interactions such as mutual grooming. Future efforts should be tailored to disseminate knowledge more efficiently, which can ultimately stimulate thoughtful decision-making by horse owners concerning the use of blankets and clipping the horse's coat. |
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0021-8812 |
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Equine Behaviour @ team @ |
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6615 |
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Author |
Harrington, F.H.; Mech, L.D. |
Title |
An analysis of howling response parameters useful for wolf pack censusing |
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Journal Article |
Year |
1982 |
Publication |
J Wildl Manag |
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46 |
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Equine Behaviour @ team @ Harrington1982 |
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6456 |
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Author |
Fuller, T.K.; Sampson, B.A. |
Title |
Evaluation of a simulated howling survey for wolves |
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Journal Article |
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1988 |
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J Widl Manag |
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52 |
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Equine Behaviour @ team @ Fuller1988 |
Serial |
6458 |
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Author |
Herbst, C.T.; Herzel, H.; Svec, J.G.; Wyman, M.T.; Fitch, W.T. |
Title |
Visualization of system dynamics using phasegrams |
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Journal Article |
Year |
2013 |
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J R Soc Interface |
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10 |
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Equine Behaviour @ team @ Herbst2013 |
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6487 |
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Author |
Palacios, V.; Font, E.; Marquez, R. |
Title |
Iberian wolf howls: acoustic structure, individual variation, and a comparison with North American populations |
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Journal Article |
Year |
2007 |
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J Mammal |
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88 |
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Equine Behaviour @ team @ Palacios2007 |
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6469 |
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Author |
Stenglein, J.L.; Waits, L.P.; Ausband, D.E.; Zager, P.; Mack, C.M. |
Title |
Estimating gray wolf pack size and family relationships using non invasive genetic sampling at rendezvous sites |
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Journal Article |
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2011 |
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J Mammal |
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92 |
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Equine Behaviour @ team @ Stenglein2011 |
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6476 |
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Author |
Morgan, T.W.; Elliott, C.L. |
Title |
Comparison of remotely-triggered cameras vs. howling surveys for estimating coyote (Canis latrans) Abundance in central Kentucky |
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Journal Article |
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2011 |
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J Ky Acad Science |
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72 |
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Equine Behaviour @ team @ Morgan2011 |
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6492 |
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Author |
Nowak, S.; Jedrzejewski, W.; Schmidt, K.; Theuerkauf, J.; Myslajek, R.W.; Jedrzejewska, B. |
Title |
Howling activity of free-ranging wolves (Canis lupus) in the Bialowieza Primeval Forest and the Western Beskidy Mountains (Poland) |
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2006 |
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J Ethol |
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25 |
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Equine Behaviour @ team @ Nowak2006 |
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6459 |
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