scholarly journals Food preferences of oribi Ourebia ourebi in the Golden Gate Highlands National Park

Koedoe ◽  
1990 ◽  
Vol 33 (1) ◽  
Author(s):  
B.K. Reilly ◽  
G.K. Theron ◽  
J. Du P. Bothma
Keyword(s):  
Seasonal Variation ◽  
Plant Species ◽  
National Park ◽  
Food Preferences ◽  
Feeding Preference ◽  
Golden Gate ◽  
Feeding Preferences ◽  
Preference Rating ◽  
Plant Parts ◽  
Actual Preference

During a two-year study on the ecology of oribi Ourebia ourebi (Zimmermann, 1783) in the Golden Gate Highlands National Park, plant species fed on by oribi were noted. The oribi fed on a total of 22 plant species. Feeding preference categories were assigned according to the degree of use of different plant species, based on direct observation and on a preference rating. The oribi in the Golden Gate Highlands National Park showed a seasonal variation in feeding preferences, utilising several species of forbs primarily during the summer and a marked dif-ference between per cent frequency utilisation of plant species and actual preference rating according to availability of species and for certain plant parts, e.g. for Sporobolus centrifugus.

scholarly journals Feeding Preference and Habitat Association of Defassa Waterbuck (Kobus ellipsiprymnus defassa) in Nechisar National Park, Southern Ethiopia

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Gatriay Tut Deng ◽  
Birtukan Tsegaye Demisse
Keyword(s):  
Plant Species ◽  
National Park ◽  
Diversity Index ◽  
Feeding Preference ◽  
Southern Ethiopia ◽  
Habitat Association ◽  
Plant Parts ◽  
Food Items ◽  
Wiener Diversity Index ◽  
Significant Difference

This study investigated feeding preference and habitat association of waterbucks in Nechisar National Park from November 2016 to August 2017 by total count and direct observation methods. From this survey, 20 plant species were observed to be the food items consumed by waterbucks. Waterbucks were mostly grazers than browser. The plant species consumed by waterbucks was highly significant between seasons (χ2 = 121.34, df = 1, p < 0.05 ). Out of 20 total plant species consumed, annual grass (11.5%), Leersia virginica (8.4%), and Cynodon dactylon (8.4%) were the most frequently consumed food items, but Tamarindus indica (2.9%), Balanites aegyptica (3.3%), and Acacia polycantha (2.36%) were the least consumed food items. There was significant difference between plant species consumed during both seasons (χ2 = 177.67, df = 19, p < 0.05 ). The Shannon–Wiener diversity index result revealed that there were different varieties of food items for waterbucks in dry season (H’ = 2.9) than in wet season (H’ = 2.6). Young leaves comprised the largest proportion of plant parts consumed by waterbucks compared to others. There was a highly significant difference in feeding plant parts in both seasons (χ2 = 88.5, df = 7, p < 0.05 ). Waterbucks spent more time on feeding in the morning and late afternoon during both seasons. The total number of waterbucks in each habitat varied due to food availability in different seasons. Different conservation measures should be taken against waterbuck reduction and create appropriate environment for waterbuck.

scholarly journals Food habits of the aoudad Ammotragus lervia in the Bou Hedma mountains, Tunisia

2015 ◽  
Vol Volume 111 (Number 11/12) ◽  
Author(s):  
Jamel Ben Mimoun ◽  
Saïd Nouira ◽  
◽  
Keyword(s):  
Seasonal Variation ◽  
Plant Species ◽  
National Park ◽  
Food Preferences ◽  
Food Plants ◽  
Grass Species ◽  
Stipa Tenacissima ◽  
Ammotragus Lervia ◽  
Barbary Sheep ◽  
Faecal Samples

Abstract A micro-histological analysis of composite faecal samples was used to determine the food plants consumed by the aoudad Ammotragus lervia (Barbary sheep) in the mountains of Bou Hedma National Park, as well as to study food preferences and seasonal variation of the diet of this ungulate. A total of 19 plant species was identified in the faecal samples: 8 grasses, 6 browse types and 5 forbs. The annual diet of this ungulate is composed of approximately 67% grasses, 17% browse and 16% forbs. Two grass species, Stipa parviflora and Stipa tenacissima, comprised 97% of grasses consumed and 63% of the annual diet, and were eaten in the year with considerably greater frequency than any other plant species. The diet of the aoudad at Bou Hedma National Park showed a seasonal variation. For example, grasses were consumed the entire year with a preference in spring (72.57%) and summer (78.31%), but their occurrence in the diet dropped in winter(38.7%). Browse was eaten preferentially in autumn (21.86%) and forbs were utilised most during winter(43.22%) and least during summer (7.53%). Our results show the plasticity of the Tunisian aoudad’s diet andidentify it predominantly as a grazer.

scholarly journals Seasonal Variation in the Dietary Preferences of the Montane Vole, Microtus Montanus

1995 ◽  
Vol 19 ◽  
pp. 76-77
Author(s):  
Aeltia Pinter ◽  
Norman Negus ◽  
Patricia Berger
Keyword(s):  
Population Dynamics ◽  
Seasonal Variation ◽  
Plant Species ◽  
Food Selection ◽  
Natural Populations ◽  
Food Preferences ◽  
Plant Resources ◽  
Microtus Montanus ◽  
Dietary Preferences ◽  
The One

Seasonal variation in food selection has been documented in several species on voles (Rothstein and Tamarin 1977, Cole and Batzli 1979 Goldberg et al. 1980) with considerable implications for winter survival and population dynamics. In Microtus Montanus a similar link may exist between growth, maturation, longevity, and population dynamics on the one hand and dietary composition on the other (e.g., Pinter and Negus 1965, Berger et al. 1981, Pinter 1988, Berger et al. 1992, Negus, Berger and Pinter 1992). Consequently, we undertook a study to investigate, in detail, the utilization of plant resources by the montane vole, Microtus montanus. The objectives of this project are twofold: (1) to identify the plant species that constitute the diet in natural populations of M. montanus and (2) to determine seasonal food preferences in relation to the availability of plant species and to the age, sex and cohorts of the montane vole.

scholarly journals Feeding preferences of Phyllotreta herbivores to winter rape and chosen weeds

2009 ◽  
Vol 45 (No. 4) ◽  
pp. 156-160 ◽  
Author(s):  
J. Štolcová
Keyword(s):  
Brassica Napus ◽  
Plant Species ◽  
Feeding Preference ◽  
Seedling Stage ◽  
Feeding Preferences ◽  
Winter Rape ◽  
Model Experiments ◽  
Thlaspi Arvense ◽  
Flea Beetles ◽  
Leaf Disks

In model experiments with leaf disks from <i>Brassica napus</i> L. subsp. napus and <i>Thlaspi arvense</i> L. and <i>Sinapis arvensis</i> L. in spring periods (May–June) of 2006–2007 feeding preferences of Phyllotreta herbivores to the above-mentioned crop and two common weeds were investigated. In seedlings of identical ontogenetic stages insignificantly higher feeding injuries were recorded in <i>B. napus</i>. Between the two monitored weeds insignificantly higher herbivory was found in <i>S. arvensis</i> compared to <i>T. arvense</i>. In a comparison of older crop and younger weeds and vice versa, flea beetles significantly preferred the four-leaf seedling stage to the cotyledon seedling stage irrespective of the monitored plant species. Though generally in feeding preference of flea beetles a general drift <i>B. napus</i> > <i>S. arvensis</i> > <i>T. arvensis</i> was recorded, the sequence of leaves also played its role under conditions of this experiment.

scholarly journals Seasonal Variation in the Dietary Preferences of the Montane Vole, Microtus montanus

1994 ◽  
Vol 18 ◽  
pp. 94-96
Author(s):  
Aelita Pinter ◽  
Norman Negus ◽  
Patricia Berger
Keyword(s):  
Population Dynamics ◽  
Seasonal Variation ◽  
Plant Species ◽  
Food Selection ◽  
Natural Populations ◽  
Food Preferences ◽  
Plant Resources ◽  
Microtus Montanus ◽  
Dietary Preferences ◽  
The One

Seasonal variation in food selection has been documented in several species on voles (Rothstien and Tamarin 1977, Cole and Batzli 1979, Goldberg et al. 1980) with considerable implications for winter survival and population dynamics. In Aficrotus montanus a similar link may exist between growth, maturation, longevity, and population dynamics on the one hand and dietary composition on the other (e.g., Pinter and Negus 1965, Berger et aL 1981, Pinter 1988, Berger et al. 1992, Negus, Berger and Pinter 1992). Consequently, we undertook a study to investigate, in detail, the utilization of plant resources by the montane vole, Microtus montanus. The objectives of this project are twofold: (1) to identify the plant species that constitute the diet in natural populations of M. montanus and (2) to determine seasonal food preferences in relation to the availability of plant species and to the age, sex and cohorts of the montane vole.

scholarly journals Seasonal Variation in the Dietary Preferences of the Montane Vole, Microtus Montanus

1993 ◽  
Vol 17 ◽  
pp. 81-83
Author(s):  
Aelita Pinter ◽  
Norman Negus ◽  
Patricia Berger
Keyword(s):  
Population Dynamics ◽  
Seasonal Variation ◽  
Plant Species ◽  
Food Selection ◽  
Natural Populations ◽  
Food Preferences ◽  
Plant Resources ◽  
Microtus Montanus ◽  
Dietary Preferences ◽  
The One

Seasonal variation in food selection has been documented in several species on voles (Rothestein and Tamarin 1977, Cole and Batzli 1979, Goldberg et al. 1980) with considerable implications for winter survival and population dynamics. In Microtus montanus a similar link may exist between growth, maturation, longevity, and population dynamics on the one hand and dietary composition on the other (e.g., Pinter and Negus 1965, Berger et al. 1981, Pinter 1988, Berger et al. 1992, Negus et al. 1992). Consequently, we undertook a study to investigate in detail the utilization of plant resources by the montane vole, Microtus montanus. The objectives of this project are twofold: (1) to identify the plant species that constitute the diet in natural populations of M. montanus and (2) to determine seasonal food preferences in relation to the availability of plant species and to the age, sex and cohorts of the montane vole.

scholarly journals Seasonal Variation in the Dietary Preferences of the Montane Vole, Microtus montanus

1992 ◽  
Vol 16 ◽  
pp. 118-120
Author(s):  
Aelita Pinter ◽  
Norman Negus ◽  
Patricia Berger
Keyword(s):  
Population Dynamics ◽  
Seasonal Variation ◽  
Plant Species ◽  
Food Selection ◽  
Natural Populations ◽  
Food Preferences ◽  
Environmental Cues ◽  
Plant Resources ◽  
Microtus Montanus ◽  
Dietary Preferences

From 1987 through 1989 we undertook a study in Grand Teton National Park and on the upper Green River, Sublette County, Wyoming, to measure growth rates of cohorts of montane voles, (Microtus montanus) born in May, June, July, and August. We documented dramatic differences in growth rate among cohorts, in a given year and between years (Negus, Berger and Pinter, 1992). We hypothesized that these are flexible responses to several environmental cues. Is this, however, a phenotypic response to an array of environmental cues, or is it actually a reflection of differential utilization of plant species that may exhibit different nutritional levels? This question cannot be answered at the present since virtually nothing is known about dietary preferences of Microtus montanus. However, seasonal variation in food selection has been documented in several other species on voles (Rothestein and Tamarin, 1977, Cole and Batzli, 1979, Goldberg et al. 1980) with considerable implications for winter survival and population dynamics. In Microtus montanus a similar link may exist between growth, maturation, longevity, and population dynamics on the one hand and dietary composition on the other (e.g., Pinter and Negus 1965, Berger et al. 1981, Pinter 1988, Berger et al. 1992, Negus, Berger and Pinter 1992). Consequently, we undertook a study to investigate in detail the utilization of plant resources by the montane vole, Microtus montanus. The objectives of this project are twofold: (i) to identify the plant species that constitute the diet in natural populations of M. montanus and (2) to determine seasonal food preferences in relation to the availability of plant species and to the age, sex and cohorts of the montane vole.

Dietary preferences in adult and juvenile goats

1997 ◽  
Vol 65 (3) ◽  
pp. 457-463 ◽  
Author(s):  
G. De Rosa ◽  
V. Fedele ◽  
F. Napolitano ◽  
L. Gubitosi ◽  
A. Bordi ◽  
...  
Keyword(s):  
Plant Species ◽  
Food Preferences ◽  
Food Presentation ◽  
Intake Rate ◽  
Feeding Preferences ◽  
Short Term ◽  
Dietary Preferences ◽  
Bite Rate ◽  
Short Term Trial ◽  
Term Trial

AbstractSix adult and six juvenile goats were used to estimate their feeding preferences when three grasses (ryegrass, barley and brome) and two legumes (clover and alfalfa) were tested. Each grass was separately tested with both clover and alfalfa. A comparison between alfalfa and clover was also performed. The plants were harvested just before their utilization, chopped into 4- to 6-cm pieces and offered to the animals in plastic baskets. Preferences were evaluated by means of a series of seven short-term trials. Each short-term trial consisted of two single-food presentations and one choice-presentation. In the first single-food presentation animals received one of the two plants to be tested. In the second single-food presentation they were offered the alternative plant species. In the choice presentation they received the two species simultaneously. During each presentation animals were allowed to eat for 20 min or take a maximum of 50 bites. In the single-food presentations bite rate, bite mass and intake rate of both juvenile and adult animals were influenced by the plant species offered. Indeed, all goats tended to display a higher intake rate and bite mass for grasses than for legumes. A grass/legume ratio of the intake rates was also computed for each grass-legume comparison. These ratios tended to be higher for juvenile than for adult goats. The results of the choice presentations indicated that food preferences were not affected by age as all goats preferred grasses to legumes and clover over alfalfa. This experiment showed that age may not play an important role in the development of food preferences.

Medicinal plants and sustainable livelihood in Pauri district of Garhwal Himalaya, Uttarakhand, India.

2016 ◽  
Vol 5 (06) ◽  
pp. 4589 ◽  
Author(s):  
Vardan Singh Rawat
Keyword(s):  
Environmental Management ◽  
Medicinal Plants ◽  
Plant Species ◽  
Skin Diseases ◽  
Sustainable Livelihoods ◽  
Vital Role ◽  
Local Communities ◽  
Sustainable Livelihood ◽  
Plant Parts ◽  
Total Plant

The present study was conducted in the Thalisain block of Pauri Garhwal to document the medicinal plants used by the local communities. 53 plant species distributed in 38 families were documented. Of the total plant species 49% were herbs, 26% trees, 23% shrubs and 2% climbers. 16 different plant parts were used by local communities for different ailments. Medicinal plants were widely used by major sections of the community against common colds, cough, skin diseases, snake bite, fever, joint pains, bronchitis etc. Women and local healers called vaids have a vital role in environmental management due to traditional knowledge and use of plants as medicine with undocumented knowledge. It has been observed as one of the best option of sustainable livelihoods for the residents of the area.

scholarly journals The distribution of woody species in relation to climate and fire in Yosemite National Park, California, USA

Fire Ecology ◽  
2020 ◽  
Vol 16 (1) ◽  
Author(s):  
Jan W. van Wagtendonk ◽  
Peggy E. Moore ◽  
Julie L. Yee ◽  
James A. Lutz
Keyword(s):  
Plant Species ◽  
Sierra Nevada ◽  
Species Distribution ◽  
National Park ◽  
Woody Plant ◽  
Fire Regime ◽  
Yosemite National Park ◽  
Distribution Models ◽  
Ecological Zones ◽  
Woody Plant Species

Abstract Background The effects of climate on plant species ranges are well appreciated, but the effects of other processes, such as fire, on plant species distribution are less well understood. We used a dataset of 561 plots 0.1 ha in size located throughout Yosemite National Park, in the Sierra Nevada of California, USA, to determine the joint effects of fire and climate on woody plant species. We analyzed the effect of climate (annual actual evapotranspiration [AET], climatic water deficit [Deficit]) and fire characteristics (occurrence [BURN] for all plots, fire return interval departure [FRID] for unburned plots, and severity of the most severe fire [dNBR]) on the distribution of woody plant species. Results Of 43 species that were present on at least two plots, 38 species occurred on five or more plots. Of those 38 species, models for the distribution of 13 species (34%) were significantly improved by including the variable for fire occurrence (BURN). Models for the distribution of 10 species (26%) were significantly improved by including FRID, and two species (5%) were improved by including dNBR. Species for which distribution models were improved by inclusion of fire variables included some of the most areally extensive woody plants. Species and ecological zones were aligned along an AET-Deficit gradient from cool and moist to hot and dry conditions. Conclusions In fire-frequent ecosystems, such as those in most of western North America, species distribution models were improved by including variables related to fire. Models for changing species distributions would also be improved by considering potential changes to the fire regime.

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