No trespassing: using a biofence to manipulate wolf movements

2013 ◽  
Vol 40 (3) ◽  
pp. 207 ◽  
Author(s):  
David E. Ausband ◽  
Michael S. Mitchell ◽  
Sarah B. Bassing ◽  
Craig White
Keyword(s):  
Canis Lupus ◽  
Scent Marking ◽  
First Year ◽  
Scent Marks ◽  
Location Data ◽  
Human Land Use ◽  
Sign Surveys ◽  
Continuous Presence ◽  
Marking Behaviour ◽  
And Control

Context Conserving large carnivores can be challenging because of conflicts with human land use and competition with humans for resources. Predation on domestic stock can have negative economic impacts particularly for owners of small herds, and tools for minimising carnivore depredation of livestock are needed. Canids use scent marking to establish territories and avoid intraspecific conflict. Exploiting scent-marking behaviour may provide a means for manipulating canid movements. Aims We hypothesised that human-deployed scent marks (i.e. ‘biofence’) could be used to manipulate the movements of grey wolves (Canis lupus) in Idaho, USA. Methods We deployed 65 km of biofence within three wolf-pack territories during summer 2010 and 2011 and used location data from satellite-collared wolves and sign surveys to assess the effectiveness of biofencing. Key results Location data provided by satellite-collared wolves and sign surveys in 2010 showed little to no trespass of the biofence, even though the excluded areas were used by the packs in previous summers. We also opportunistically deployed a biofence in between a rendezvous site of a resident pack and a nearby sheep grazing allotment; the pack was not implicated in any depredations in summer 2010, even though they had killed sheep every year since 2006. Location data provided by satellite-collared wolves in summer 2011 showed that wolves did trespass biofences. Conclusions Biofencing effectively manipulated the movements of wolves in the first year of our study, but not the second. Implications Our work suggests that biofencing may be most limited by the apparent necessity to maintain a continuous presence once the biofence is established. The inherent labour and costs associated with such efforts may limit the usefulness of biofencing. Our work can be improved on through further testing that maintains biofencing over a longer timeframe (>3 months), samples several animals per treatment pack, and uses a treatment and control design.

scholarly journals The effect of neighbouring klipspringer on the scent–marking behaviour of a group of klipspringer in the Kruger National Park

Koedoe ◽  
2002 ◽  
Vol 45 (1) ◽  
Author(s):  
M. Kruger ◽  
J. Du P. Bothma ◽  
J.M. Kruger
Keyword(s):  
National Park ◽  
Scent Marking ◽  
Kruger National Park ◽  
Scent Mark ◽  
Scent Marks ◽  
Marking Behaviour ◽  
Strip Transect

Both the male and the female klipspringer scent-mark their ranges. A pair of pre-orbital glands below the eyes produces the scent. The secretion is a sticky, substance that is deposited on a suitable twig. Klipspringer scent marks were surveyed in a specific klipspringer range in the Kruger National Park with the use of a strip transect method. The results showed that klipspringer in the Kruger National Park scent-mark more frequently on the boundaries of their ranges and also more on those sides where there is another resident klipspringer group.

SCENT MARKING IN MEADOW VOLES AND PRAIRIE VOLES: A TEST OF THREE HYPOTHESES

Behaviour ◽  
2001 ◽  
Vol 138 (11-12) ◽  
pp. 1319-1336 ◽  
Author(s):  
S.G. Mech ◽  
M.H. Ferkin ◽  
Keyword(s):  
Avoidance Response ◽  
Mating Systems ◽  
Scent Marking ◽  
Scent Mark ◽  
Scent Marks ◽  
Prairie Voles ◽  
Meadow Voles ◽  
Terrestrial Mammals ◽  
Males And Females ◽  
Marking Behaviour

AbstractMost terrestrial mammals deposit scent marks to communicate with conspecifics. We examined the scent marking behaviour of meadow voles and prairie voles, species with different mating systems and social organizations, to determine whether voles scent mark according to the 'targeting' response, the 'avoidance' response, or the 'shotgun' response. The targeting response occurs when the second scent donor deposits more of its scent marks in an area marked by the first scent donor than in an unscented area. The avoidance response occurs when the second scent donor deposits more of its scent marks in an unscented area than in an area marked by the first scent donor. The shotgun response occurs when the second scent donor deposits a similar number of its scent marks in an area containing scent marks of a conspecific and in an area containing no conspecific scent marks. We allowed voles simultaneous access to an arena containing two arms: one of the arms was scented by a conspecific and the other arm was unscented. We recorded the number of marks deposited by the voles in each arm and the amount of time they spent investigating marks deposited previously in the scented arm. Our data provide no support for the avoidance response, but provide support for the shotgun response and the target response. Species and sex differences in the scent marking behaviours of voles when they encounter the scent marks of conspecifics are discussed within the framework that scent marking responses depend on the voles' social organization and mating system, and that these responses may reflect the tactics males and females use to attract mates and compete with same-sex conspecifics.

Scent deposition by cheek rubbing in the alpine marmot (Marmota marmota) in the French Alps

1995 ◽  
Vol 73 (11) ◽  
pp. 2065-2071 ◽  
Author(s):  
Marie-Claude Bel ◽  
Christelle Porteret ◽  
Jacques Coulon
Keyword(s):  
Home Range ◽  
Central Area ◽  
Scent Marking ◽  
Field Tests ◽  
Home Ranges ◽  
Scent Marks ◽  
Territorial Defence ◽  
Marmota Marmota ◽  
Marking Behaviour ◽  
Alpine Marmot

The aim of this fieldwork was to provide information about the function of scent-marking behaviour in the alpine marmot (Marmota marmota). Twenty-three identified animals were observed on their home range during the season of activity, from May to September, during which the probability and rate of cheek rubbing decreased significantly. Cheek rubbing was performed more by resident adults than by 2-year-olds or yearlings. The resident adult pairs made "marking tours" during which numerous successive bouts of scent marking occurred throughout most of the home range. Scent marks were not evenly distributed within home ranges. Principal and, if present, accessory burrow systems were saturated with scent deposits, the boundaries being marked significantly more than the central area. We tested the reactions of marmots to strange odours by presenting them with two glass tubes, one clean (control) and the other covered with marks deposited by marmots belonging to other groups. The results showed that residents tended to mark the experimental tubes more frequently, or at least more intensively, than the control ones. In the alpine marmot, cheek rubbing appears to be a multipurpose activity. It is used to advertise the occupancy of burrows and, as predicted by Gosling, scent marks were also laid down where the risk of intrusion was greatest, i.e., at the boundaries, so that intruders could detect them more readily. The results of field tests support another of Gosling's predictions, that residents will tend to overmark any mark deposited by a strange animal inside their territory. Thus, in the alpine marmot, cheek rubbing can play a role in territorial defence.

Scent marking in coyotes

1980 ◽  
Vol 58 (4) ◽  
pp. 473-480 ◽  
Author(s):  
W. Don Bowen ◽  
Ian McTaggart Cowan
Keyword(s):  
National Park ◽  
Canis Latrans ◽  
Scent Marking ◽  
Dominant Male ◽  
Scent Mark ◽  
Adult Males ◽  
Scent Marks ◽  
Jasper National Park ◽  
Males And Females ◽  
Marking Behaviour

The scent marking behaviour of coyotes, Canis latrans, was studied in Jasper National Park, Alberta, during the period 1974–1976. Results show that adult males and females scent mark throughout their territory at all times of the year. Urine is most frequently used in marking. The rate of scent marking at the edge of the territory is approximately twice that in the center. This increase is accomplished by reducing the distance between scent-mark sites and increasing the proportion of multiple marks. All members contribute to the marking behaviour of the pack, although the dominant male marks most frequently. The scent marks of neighbours at territory borders are not avoided but vigourously marked. Nevertheless, it appears that marking is associated with the maintenance of territory.

Scent-marking behavior of sympatric wolves (Canis lupus) and coyotes (C. latrans) in Riding Mountain National Park

1991 ◽  
Vol 69 (7) ◽  
pp. 1721-1727 ◽  
Author(s):  
Paul C. Paquet
Keyword(s):  
Canis Lupus ◽  
National Park ◽  
Scent Marking ◽  
Scent Marks ◽  
Riding Mountain National Park ◽  
Ecological Separation

The objectives of this study were to describe the scent-marking behavior of sympatric wolves and coyotes, and determine whether scent marking has an interspecific behavioral significance and, if so, whether it is involved in maintaining ecological separation of the two species. The hypotheses tested were that coyotes travelling within active wolf areas reduce their frequency of marking and avoid wolf scent marks, and that wolves react to sympatric coyotes as transgressing conspecifics, and increase their scent marking. Marking by the two species was similar, both canids using the same scent mounds. Coyotes did not avoid areas marked by wolves, nor did they minimize evidence of their own activity. Coyotes increased their marking significantly in response to wolves. Wolves, however, did not respond to marks by coyotes.

scholarly journals The scent world of cats: where to place a urine scent mark to increase signal persistence?

2020 ◽  
pp. 1-18
Author(s):  
Maja Mohorović ◽  
Miha Krofel
Keyword(s):  
Environmental Factors ◽  
Scent Marking ◽  
Area Under The Curve ◽  
Adaptive Significance ◽  
Scent Mark ◽  
Scent Marks ◽  
Significant Difference ◽  
Predominant Form ◽  
Marking Behaviour ◽  
Selection Of

Abstract Scent-marking is a predominant form of communication among felids, with urine spraying having a key role. Detectability and longevity of scent marks are recognized as crucial for efficiency of scent-marking, but there is limited research that has tested scent persistence with respect to various environmental factors. We used an experimental framework to measure human-perceived strength of felid urine smell and determine the effects of substrate, tilt and aspect of marked surfaces on persistence of the simulated scent marks. We used area under the curve (AUC), calculated for the scent strength of each scent-marked surface over time, as a proxy for urine scent preservation. Thereafter, we used ANOVA, followed by analysis of differences of interest between the marking sites, to assess the effect of environmental factors on human-perceived scent mark persistence. Odour persisted significantly better on rough surfaces, surfaces covered with moss and on surfaces with overhanging tilts, while there was no significant difference between the northerly- and southerly-oriented surfaces. The results are generally in accordance with the use and selection of marking sites previously reported for wild felids throughout the world, confirming that in their marking behaviour felids strive to prolong the persistence of scent marks. This knowledge will help researchers in interpretation of data on scent-marking and to evaluate the adaptive significance of this behaviour.

An inevitable crisis? From first to second year in counsellor training

2020 ◽  
Vol 5 (1) ◽  
pp. 74-89
Author(s):  
Hugh Crago
Keyword(s):  
Right Hemisphere ◽  
Training Programme ◽  
First Year ◽  
Training Experience ◽  
Counsellor Training ◽  
Student Dropout ◽  
Second Year ◽  
Neurological Research ◽  
First Year Of Life ◽  
And Control

In a seminal 1973 paper, Robert Clark described the very different “cultures” of the first and second year students in a four year clinical psychology PhD programme. The author applies Clark’s template to his own experiences as trainee or trainer in five different counsellor education programmes, one in the US and four in Australia. Each of the programmes, to varying degrees, demonstrates key features of the pattern identified by Clark, where the first year is “therapeutic” and other-oriented, the second is “professional” and self-focused. The author concludes that all the surveyed programmes exhibited some level of “second year crisis”, in which a significant number of students felt abandoned, dissatisfied, or rebellious. The author extends and refines Clark’s developmental analogy (first year = childhood; second year = adolescence) to reflect recent neurological research, in particular, the shift from a right hemisphere-dominant first year of life, prioritising affiliative needs, to a left hemisphere-dominant second year, prioritising autonomy and control. This shift is paralleled later by a more gradual move from a protective, supportive childhood to necessary, but sometimes conflictual, individuation in adolescence. The first two years of a counsellor training programme broadly echo this process, a process exacerbated by the second year internship/placement, in which students must “leave home” and adjust to unfamiliar, potentially less nurturing, authority figures. Finally, the author suggests introducing more rigorous “academic holding” into the first year, and greater attention to “therapeutic holding” of dissident students in the second, hopefully decreasing student dropout, and achieving a better balanced training experience.

THE EFFECT OF APPLYING ANIMAL CARTOON PICTURES ON STUDENTS’ ACHIEVEMENT IN WRITING NARRATIVE TEXT

2017 ◽  
Vol 6 (1) ◽  
Author(s):  
Hasanul Arifin Zul And Masitowarni Siregar
Keyword(s):  
T Test ◽  
Narrative Text ◽  
Control Group ◽  
First Year ◽  
Writing Achievement ◽  
Control Groups ◽  
Post Test ◽  
Written Test ◽  
And Control ◽  
Experimental Group

This thesis is focused on the investigation of the effect of applying animal cartoon pictures on students’ achievement in writing narrative text. This study aims to find whether applying animal cartoon pictures significantly affect the students’ writing achievement or not. The data in this study were obtained by administering a written test. The population was the 2015/2016 first year (grade XI) of SMA Swasta Nusantara Lubuk Pakam and 66 students were taken as the sample by using random sampling. The sample was divided into two groups, experimental and control groups. The experimental group was taught by applying animal cartoon pictures while the control group without animal cartoon pictures (x = lecturing). The data were taken the scores from the pre-test and post-test to both experimental and control groups. These data were analyzed by using t-test. The result of computing the t-test obviously showed that t-observed is higher than t-table (5.21 >1,67) with the degree of freedom 64 (df =N-2) at the level significance 0,05 one tail test. It showed that the application of animal cartoon pictures significantly affected the students of SMA Swasta Nusantara Lubuk Pakam achievement in writing narrative text.

scholarly journals ‘Children Are to Be Regarded as Propaganda’: Contradictions of German Occupation Policies in the Child Evacuations to Switzerland, 1941–1942

2021 ◽  
Vol 51 (1) ◽  
pp. 76-97
Author(s):  
Chelsea Sambells
Keyword(s):  
First Year ◽  
German Occupation ◽  
Nazi Occupation ◽  
And Control

During the first year of Nazi occupation in Belgium, the German authorities consented to send thousands of hungry children to neutral Switzerland for three-month periods of recuperation by means of a Swiss-operated evacuation scheme. After Nazi officials in Berlin learned of these unusual evacuations, the German occupation authorities in Belgium became embroiled in defending and justifying their actions. This article argues that while such contradictions and paradoxes in occupation policies epitomized the Nazi leadership, both the value and agency of children – and the perception of saving them – became unconventional Nazi weapons of exploitation and control.

scholarly journals Didactic Model: Teaching the English Temporal System to Arabic Freshman Learners of English

2017 ◽  
Vol 19 (_sup1) ◽  
pp. 81-97
Author(s):  
Thana Hmidani
Keyword(s):  
Linguistic Competence ◽  
First Year ◽  
Language Awareness ◽  
Intensive English ◽  
First Year Students ◽  
Medical College ◽  
Temporal System ◽  
Post Test ◽  
And Control ◽  
Selection Of

This study took place at a medical college with 57 Arabic first-year students taking an intensive English course. The aim was to address the problems that learners experience when using the English tenses properly. The didactic model was developed and implemented in the study group only (27 students). Pre, mid-, and post-tests were administered to study and control groups at three points in time. The model is a selection of aspects from different methods combined aiming to lead participants to a higher level of linguistic competence in terms of language awareness, reading and writing skills, and vocubulary building. The results indicated statistically significant differences in the post-test between the two groups over time regarding the level of linguistic competence.

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