scholarly journals Activity Patterns of River Otters in the Oxbow Bend Vicinity, Grand Teton National Park

1995 ◽  
Vol 19 ◽  
pp. 31-32
Author(s):  
Joseph Hall
Keyword(s):  
Special Interest ◽  
National Park ◽  
Activity Patterns ◽  
Diurnal Activity ◽  
Nocturnal Activity ◽  
Grand Teton National Park ◽  
River Otters ◽  
Lutra Canadensis

Goals of the project were to obtain information on daily movements and activity patterns of River otters (Lutra canadensis), particularly nocturnal activity, to supplement data on diurnal activity obtained from a previous study. Of special interest was to determine whether or not nocturnalism activity occur which are similar to those seen by day. Additionally, observations of any evidence of fidelity to specific habitat sites documented in previous years were to be recorded,

scholarly journals River Otter Distribution and Food Habits in Grand Teton National Park as Part of an Ongoing Project in the GYE

2015 ◽  
Vol 38 ◽  
pp. 75-78
Author(s):  
Kelly Pearce ◽  
Tom Serfass
Keyword(s):  
National Park ◽  
Activity Patterns ◽  
Public Support ◽  
Primary Objective ◽  
Camera Traps ◽  
Lontra Canadensis ◽  
Flagship Species ◽  
River Otter ◽  
Grand Teton National Park ◽  
River Otters

Grand Teton National Park is part of the known range of the North American river otter, however not much is known about this semi-aquatic mammal within the park. The results presented here are part of a larger project to investigate the potential of the river otter (Lontra canadensis) to serve as an aquatic flagship (species that engender public support and action) for the Greater Yellowstone Ecosystem. River otters, known for their charismatic behavior have the potential to serve as an aquatic flagship species to promote conservation of aquatic ecosystems. The primary objective of this portion of the study was to identify river otter latrines on portions of the Snake River, between Flagg Ranch and Jackson Lake, and between Jackson Lake Dam and Pacific Creek, collect river otter scats to determine diet of the river otter, and employ remote cameras to determine activity patterns of the river otters. Between 20 June and 1 July 2015, 26 river otter latrines were identified during shoreline surveys, 186 river otter scats were collected, and cameras were deployed at 6 latrines between 7 July and 24 August 2015. River otter scats have been cleaned and prepared for analysis, but have not all been processed to date. Camera traps recorded 222 images, of which 7% (n = 14) were of carnivores, 70% (n = 155) were of non-carnivore mammals, and 9% (n = 22) were of birds. River otters were detected at 1 of the 6 latrines, a total of 5 independent times during the study.

scholarly journals Behavior of River Otters in the Oxbow Bend Vicinity, Grand Teton National Park 1997 Season

1997 ◽  
Vol 21 ◽  
pp. 26-28
Author(s):  
Joseph Hall
Keyword(s):  
National Park ◽  
Field Work ◽  
Diurnal Activity ◽  
Grand Teton National Park ◽  
River Otters ◽  
The Third

1997 was the third and final season devoted to gaining information on the behavior of river otters with most emphasis on nocturnal and diurnal activity. As in the 1995 and 1996 seasons, six automatic camera monitors, activated by treadle switches, were put out at sites often frequented by these animals. In addition, canoes were frequently used for daytime patrols. Field work occurred from July 8 - August 6.

scholarly journals Ecology of River Otters in Grand Teton National Park

1986 ◽  
Vol 10 ◽  
pp. 92-94
Author(s):  
Joseph Hall
Keyword(s):  
National Park ◽  
Activity Patterns ◽  
Habitat Preferences ◽  
Activity Cycle ◽  
Grand Teton National Park ◽  
River Otters ◽  
Additional Information

Obtaining additional information on populations, movements, activity patterns and habitat preferences are the main goals of this study. Special efforts were made to try to round out an understanding of the nocturnal phase of an otter's 24-hour activity cycle.

scholarly journals Ecological Study of River Otters in Grand Teton National Park

1982 ◽  
Vol 6 ◽  
pp. 46-51
Author(s):  
Joseph Hall
Keyword(s):  
National Park ◽  
Ecological Study ◽  
Distribution Density ◽  
Activity Patterns ◽  
Field Work ◽  
Snake River ◽  
Grand Teton National Park ◽  
River Otters ◽  
And Behavior

The primary goals of the study are to obtain information on the distribution, density, movements, activity patterns and behavior of otters on the Snake River from Jackson Lake Dam to Moose. Most observations were concentrated along the 3.5 mile section from the dam to and including the Oxbow. This report covers field work during the periods of March 7-17 and August 11 - September 25. No otters were seen in March but they were observed for 28 hours during 88 hours afield in August and September. Additionally, Mr. John Turner of Triang1e-X Float Trips and Mr. Dick Barker of Barker-Ewing Float Trips were most cooperative in obtaining sightings of otters made on the river by their parties between Deadman Bar #2 and Moose.

scholarly journals Behavior of River Otters in the Oxbow Bend Vicinity, Grand Teton National Park

1996 ◽  
Vol 20 ◽  
pp. 50-51
Author(s):  
Joseph Hall
Keyword(s):  
National Park ◽  
Activity Patterns ◽  
Field Work ◽  
Snake River ◽  
Grand Teton National Park ◽  
Feeding Sites ◽  
River Otters ◽  
Resting Sites ◽  
Daytime Activity

The 1996 project was a continuation of the study begun in 1995 - to obtain information on movements, sociability, and activity patterns of river otters in the Oxbow region of the Snake River within Grand Teton National Park. Particular emphasis was on nocturnal patterns as documented by automatic cameras activated by buried treadle­switches in places otters were known to frequent, such as latrines, resting sites and feeding sites. Daytime activity was monitored both by the cameras and by routine canoe patrols. Field work was carried out July 5- August 5.

Daytime and nighttime activity at a breeding colony of Great Blue Herons in a nontidal environment

1993 ◽  
Vol 71 (6) ◽  
pp. 1075-1078 ◽  
Author(s):  
Raymond McNeil ◽  
Rejean Benoît ◽  
Jean-Luc Desgranges
Keyword(s):  
Tidal Cycle ◽  
Activity Patterns ◽  
Coastal Areas ◽  
Daily Rhythm ◽  
Diurnal Activity ◽  
Nocturnal Activity ◽  
Breeding Colony ◽  
Ardea Herodias ◽  
Foraging Time

It is generally admitted that in coastal areas, herons of the genus Ardea adjust their foraging time according to the tidal cycle. However, to what extent do tides control the herons' daily rhythm of activity? To answer this question, we present the day and night activity patterns of Great Blue Herons (Ardea herodias) arriving to feed their young at a heronry located in a nontidal environment in southern Quebec. Herons were about half as active at night as during the day. Therefore, although significantly less than diurnal activity, nocturnal activity was not negligible, and consequently the tide cycle is not the only factor controlling the daily rhythm of the herons' activity. Those breeding pairs that were most active during the day were no more or less active at night. Diurnal activity was more closely correlated with the number of young that fledged than was nocturnal activity. Thus, night activity was not necessarily important for the survival of young herons, but it could be explained by other factors such as the greater availability of certain prey at night.

scholarly journals Some Initial Observations Concerning the African Wild Banana Ensete ventricosum as a Resource for Vertebrates

2019 ◽  
Vol 12 ◽  
pp. 194008291987931 ◽  
Author(s):  
Fredrick Ssali ◽  
Douglas Sheil
Keyword(s):  
National Park ◽  
Activity Patterns ◽  
Keystone Species ◽  
Resource Scarcity ◽  
Camera Traps ◽  
Nocturnal Activity ◽  
Ensete Ventricosum ◽  
Forest Resilience ◽  
Animal Populations ◽  
Wild Banana

The ecological role and significance of “African wild bananas” Ensete ventricosum (Welw.) Cheesman (Musaceae) are unknown. We considered if E. ventricosum, with its sustained flowering and fruiting, might act in some ways like a keystone species by supporting animal populations during periods of resource scarcity. We deployed camera traps facing flowers or fruits of E. ventricosum for a total of 40 camera months in the Bwindi Impenetrable National Park, Uganda. We recorded 1,691 visitor events by 11 vertebrate species to flowers and fruits (1,129 events by five species to flowers and 562 events by eight species to fruits); these visitors included potential pollinators and seed dispersers. Frequent visitors to flowers were the African dormouse Graphiurus murinus (53.3%), Nectar bat Megaloglossus woermanni (43.8%), and sunbirds (family Nectariniidae) (2.4%) while those to fruits were Carruther’s mountain squirrel Funisciurus carruthersi (54.1%), L'hoest's monkey Allochrocebus l’hoesti (18.7%), and Forest giant pouched rat Cricetomys emini (18.6%). Flower visitors were mainly nocturnal (with birds favoring dusk), while fruit visitors exhibited both diurnal and nocturnal activity patterns. The data indicate that by producing flowers and fruits continuously, E. ventricosum should support animal populations when other flower and fruit resources are scarce. We speculate that establishing these plants in degraded areas may facilitate forest resilience and recovery while providing fallback resources to many species. Such plant species are prime contenders for protection and restoration.

scholarly journals Diurnal activity patterns of walia ibex (Capra walie) in Simien Mountains National Park, Ethiopia

2020 ◽  
Vol 11 (2) ◽  
pp. 83
Author(s):  
Dessalegn Ejigu ◽  
Afework Bekele ◽  
Larkin Powell
Keyword(s):  
Conservation Planning ◽  
National Park ◽  
Sampling Method ◽  
Activity Patterns ◽  
Conservation Strategies ◽  
Diurnal Activity ◽  
Natural Habitats ◽  
Before And After ◽  
Dry Seasons ◽  
Time Spent Feeding

Walia ibex (Capra walie) is an endangered and endemic species restricted to Simien Mountains National Park (SMNP), Ethiopia. Data on activity patterns of walia ibex were collected during October 2009 to November 2011, and the main objective of the research was to determine diurnal activity patterns of walia ibex in Simien Mountains National Park in order to design sound conservation strategies for the species. Scan sampling method was used for data collection on diurnal activity patterns of walia ibex. Diurnal activity patterns in walia ibex were bimodal, in which they were active before and after noon. They rest in shade on rocks and cliffs during the mid-day to protect themselves from hot sun and predators. Activity patterns of walia ibex during the day showed statistically significant differences (F7,18228= 82.09, df=7, p<0.01). Feeding showed significant differences compared to moving, standing, resting, socializing, and other activities (p<0.05). Diurnal activity records in the walia ibex population during the wet and the dry seasons showed that time spent feeding was the highest and vigilance was the lowest. Knowledge of the pattern of this behavior can especially be useful to design conservation planning as successful reproduction in the population may be threatened by anthropogenic disturbances. Thus, information about the diurnal activity patterns of walia ibex is essential for conservation planning of the endemic and endangered walia ibex in its natural habitats.

scholarly journals Summer Habitat Preferences and Activity Patterns of River Otters In Grand Teton National Park

2001 ◽  
Vol 25 ◽  
pp. 63-71
Author(s):  
Joseph Hall
Keyword(s):  
Natural History ◽  
National Park ◽  
Habitat Preferences ◽  
Lontra Canadensis ◽  
Snake River ◽  
Service Research ◽  
Grand Teton National Park ◽  
River Otters ◽  
The North ◽  
History Of

I studied the natural history of river otters. (Lontra canadensis) during the summers of 1982-1986 and 1995-1997 in Grand Teton National Park, Wyoming. Habitat preferences were analyzed by tallying sightings on 5 types of habitat along 16 km of the Snake River. Otters were seen on all 5 habitat types and exhibited a strong preference for the logjam/beaver lodge category. Beavers and otters sometimes occupied a lodge simultaneously. I recorded daytime activity directly in 1982 and noted a large peak in mid-morning and a small one in late afternoon. To obtain information indirectly on round-the-clock activity I employed 6 modified camera monitors activated by treadle-switches at frequently used sites. Pooled records for 3 summers showed almost two and a half times higher activity by day than by night, a finding opposite of what was expected. The hypothesis I suggest is that diurnal activity exceeds nocturnal activity because of the habituation of otters to humans over a half century's tradition of frequent exposure and non-harassment in the national park. In the summers of 1982-1986 and 1995-1997 I made a study of the natural history of river otters (Lontra canadensis), in Grand Teton National Park under auspices of the University of Wyoming - National Park Service Research Center. Occasional observations were made along the Snake River from Flagg Ranch near the north boundary of the park to the north end of Jackson Lake and from Pacific Creek to Deadman's Bar. However, the 3 km stretch of river from just below Jackson Lake Dam to the Oxbow was the site of most intensive study. (See Fig. 1)

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