Understanding Landscape Use Patterns of Livestock as a Consequence of Foraging Behavior

The natural diet and habitat use patterns of the central mudminnow suggest that it is a generalist feeder capable of using a variety of foraging sites. Laboratory experiments were performed to measure the efficiency of this species as it foraged from four sites: open bottom substrate, the water column, submerged macrophytes, and the water's surface. Midwater, macrophyte, and surface foraging rates did not differ significantly from each other, whereas bottom rates were somewhat lower. Foraging success was also unaffected by small changes in the experimental environment. Significant variation existed among the foraging patterns of individual fish. The observed versatility of the mudminnow's foraging behavior could aid this species in exploiting physically severe, variable, unproductive, and (or) species-poor environments.

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Divergent Foraging Strategies of Two Neotropical Migrant Warblers: Implications for Winter Habitat Use

The Auk ◽

10.1093/auk/117.2.381 ◽

2000 ◽

Vol 117 (2) ◽

pp. 381-392 ◽

Cited By ~ 3

Author(s):

Allan M. Strong

Keyword(s):

Habitat Use ◽

Leaf Litter ◽

Foraging Behavior ◽

Foraging Strategies ◽

Habitat Types ◽

Seiurus Aurocapillus ◽

Winter Habitat ◽

Neotropical Migrant ◽

Use Patterns ◽

Limnothlypis Swainsonii

Abstract To address whether foraging strategies affect habitat-use patterns of nonbreeding warblers, I quantified foraging behavior, bill dimensions, and diet (based on regurgitation samples) of Ovenbirds (Seiurus aurocapillus) and Swainson's Warblers (Limnothlypis swainsonii) wintering in three habitats in Jamaica. Ovenbirds primarily gleaned prey from the surface of the leaf litter (95% of foraging maneuvers), resulting in a diet comprised predominantly of ants (62% of all prey items), seeds (18%), and beetles (9%). Swainson's Warblers foraged by lifting leaves (80% of foraging maneuvers), resulting in a significantly different diet dominated by beetles (39%), spiders (22%), and ants (19%). More than 60% of the regurgitation samples from Swainson's Warblers contained orthopterans and/or gecko (Sphaerodactylus goniorhynchus) bones. Averaged across all habitat types, Ovenbirds consumed ants in direct proportion to their abundance based on visual counts of arthropods. Swainson's Warblers consumed beetles more than expected based on the abundance of beetles in visual counts and Berlese funnels. The use of a diversity of habitats by Ovenbirds may be related to their ability to feed opportunistically on ants, which are a widespread, abundant, and reliable resource. In contrast, based on their foraging behavior and diet, Swainson's Warblers may be restricted to habitats with a well-developed canopy and an abundant subsurface leaf-litter fauna.

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134 Vegetation characteristics and diurnal periods influenced the landscape-use pattern of goats and sheep in woodlands

Journal of Animal Science ◽

10.1093/jas/skz053.164 ◽

2019 ◽

Vol 97 (Supplement_1) ◽

pp. 72-73

Author(s):

Shailes Bhattrai ◽

Uma Karki ◽

Sanjok Poudel

Keyword(s):

Feeding Behavior ◽

Live Weight ◽

Ground Level ◽

Distribution Patterns ◽

Control Treatment ◽

Study Objective ◽

Use Patterns ◽

Vegetation Height ◽

Landscape Use ◽

Understory Shrubs

Abstract Woodlands dominate the landcover in the Southeast and offer great opportunities for expanding small-ruminant grazing. However, unmanaged understory shrubs grown beyond animals’ access minimizes the utilization of such vegetation. Managing the understory shrubs and non-target trees to lower heights may increase animals’ access to woodland vegetation and alter the landscape-use patterns of animals. The study objective was to determine the effect of vegetation height on the behavior and distribution of Kiko wethers and Katahdin rams in woodlands. The study was conducted in six woodland plots (0.4-ha each) containing southern pine and hardwood trees and numerous understory vegetation. The non-pine species were either cut to one of the heights from the ground level (0 m, 0.91 m, 1.52 m) or left uncut (control). Once the cut vegetation grew back and attained the full canopy, Kiko wethers (8, 48–50 months old, 72.8 ± 2.29 kg live weight) and Katahdin rams (5, 29–32 months old, 95.5 ± 4.31 kg live weight) were rotationally stocked in separate plots (3 plots each species), and their diurnal (dawn-dusk) behaviors and distribution patterns monitored when they were in each plot during the summer of 2018. Data were analyzed in Kruskal-Wallis rank sum test in R. Both wethers and rams visited the control treatment the least, rams grazed mostly in areas with short vegetation (0 m), and wethers visited more to areas with higher vegetation (1.52 m) than rams for feeding (P < 0.001), which was predominant during the post-midday period (3:00-dusk) (P < 0.0001). Browsing was the dominant feeding behavior of wethers (39% browsing vs. 4% grazing), while rams’ feeding behavior was dominated with grazing (24% grazing vs. 12% browsing). Lying was the dominant diurnal behavior of both wethers (46%) and rams (35%), and predominant during the midday period (11 a.m.-3:00 p.m.) (P <0.05). Vegetation heights and diurnal period highly influenced animals’ behavior.

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Isotopic evidence for changing mobility and landscape use patterns between the Neolithic and Early Bronze Age in western Ireland

Journal of Archaeological Science Reports ◽

10.1016/j.jasrep.2020.102214 ◽

2020 ◽

Vol 30 ◽

pp. 102214

Author(s):

Christophe Snoeck ◽

Carleton Jones ◽

John Pouncett ◽

Steven Goderis ◽

Philippe Claeys ◽

...

Keyword(s):

Bronze Age ◽

Early Bronze Age ◽

Isotopic Evidence ◽

Use Patterns ◽

Landscape Use ◽

Western Ireland

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2 Vegetation characteristics and diurnal periods influenced the landscape-use pattern of goats and sheep in woodlands

Journal of Animal Science ◽

10.1093/jas/skz053.035 ◽

2019 ◽

Vol 97 (Supplement_1) ◽

pp. 16-16

Author(s):

Shailes Bhattrai ◽

Uma Karki ◽

Sanjok Poudel

Keyword(s):

Feeding Behavior ◽

Live Weight ◽

Ground Level ◽

Distribution Patterns ◽

Control Treatment ◽

Study Objective ◽

Use Patterns ◽

Vegetation Height ◽

Landscape Use ◽

Understory Shrubs

Abstract Woodlands dominates the landcover in the Southeast and offer great opportunities for expanding small-ruminant grazing. However, unmanaged understory shrubs grown beyond animals’ access minimizes the utilization of such vegetation. Managing the understory shrubs and non-target trees to lower heights may increase animals’ access to woodland vegetation and alter the landscape-use patterns of animals. The study objective was to determine the effect of vegetation height on the behavior and distribution of Kiko wethers and Katahdin rams in woodlands. The study was conducted in six woodland plots (0.4-ha each) containing southern pine and hardwood trees and numerous understory vegetation. The non-pine species were either cut to one of the heights from the ground level (0 m, 0.91 m, 1.52 m) or left uncut (control). Once the cut vegetation grew back and attained the full canopy, Kiko wethers (8, 48–50 months old, 72.8 ± 2.29 kg live weight) and Katahdin rams (5, 29–32 months old, 95.5 ± 4.31 kg live weight) were rotationally stocked in separate plots (3 plots each species), and their diurnal (dawn-dusk) behaviors and distribution patterns monitored when they were in each plot during the summer of 2018. Data were analyzed in Kruskal-Wallis rank sum test in R. Both wethers and rams visited the control treatment the least, rams grazed mostly in areas with short vegetation (0 m), and wethers visited more to areas with higher vegetation (1.52 m) than rams for feeding (P < 0.001), which was predominant during the post-midday period (3:00-dusk) (P < 0.0001). Browsing was the dominant feeding behavior of wethers (39% browsing vs. 4% grazing), while rams’ feeding behavior was dominated with grazing (24% grazing vs. 12% browsing). Lying was the dominant diurnal behavior of both wethers (46%) and rams (35%), and predominant during the midday period (11 a.m.-3:00 p.m.) (P < 0.05). Vegetation heights and diurnal period highly influenced animals’ behavior.

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Plasticity in oviposition and foraging behavior in the invasive pest Drosophila suzukii across natural and agricultural landscapes

10.22541/au.163351367.74677990/v1 ◽

2021 ◽

Author(s):

Johanna Elsensohn ◽

Hannah Burrack

Keyword(s):

Foraging Behavior ◽

Insect Pests ◽

Cropping Systems ◽

Oviposition Preference ◽

Agricultural Landscapes ◽

Invasive Pest ◽

Wild Food ◽

Mountain Range ◽

Drosophila Suzukii ◽

Use Patterns

1. Context and need for work The effects and extent of the impacts of agricultural insect pests in and around cropping systems is a rich field of study. However, little research exists on the presence and consequence of pest insects in undisturbed landscapes distant from crop hosts. Research in such areas may yield novel or key insights on pest behavior or ecology that is not evident from agroecosystem-based studies. 2. Approach and methods Using the invasive fruit pest Drosophila suzukii (Matsumura) as a case study, we investigated the presence and resource use patterns of this agricultural pest in wild blackberries growing within the southern Appalachian Mountain range of North Carolina over two years. 3. Main results We found D. suzukii throughout the sampled range with higher levels of infestation (D. suzukii eggs/g fruit) in all ripeness stages in natural areas as compared to cultivated blackberry samples, but especially in under-ripe fruit. 4. Main results We also explored a direct comparison of oviposition preference between wild and cultivated fruit and found higher oviposition in wild berries when equal weights of fruit were offered, but oviposition was higher in cultivated berries when fruit number was equal. 5. Synthesis and applications D. suzukii were wide-spread in previously unsampled remote, forest habitats. Forest populations laid more eggs in unripe wild-grown blackberries throughout the year than populations infesting cultivated berries. This suggests D. suzukii may change its oviposition and foraging behavior in relation to fruit type. Additionally, as D. suzukii exploits a common forest fruit prior to ripeness, further research is needed to explore how this affects wild food web dynamics and spillover to regional agroecosystems.

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Update: Behavioral Management of Unilateral Vocal Fold Paralysis and Paresis

Perspectives of the ASHA Special Interest Groups ◽

10.1044/2019_pers-sig3-2018-0018 ◽

2019 ◽

Vol 4 (3) ◽

pp. 474-482

Author(s):

Sarah L. Schneider

Keyword(s):

Vocal Fold ◽

Treatment Plan ◽

Traumatic Injury ◽

Voice Therapy ◽

Valuable Insight ◽

Behavioral Management ◽

Use Patterns ◽

Vocal Quality ◽

And Function ◽

Voice Use

PurposeVocal fold motion impairment (VFMI) can be the result of iatrogenic or traumatic injury or may be idiopathic in nature. It can result in glottic incompetence leading to changes in vocal quality and ease. Associated voice complaints may include breathiness, roughness, diplophonia, reduced vocal intensity, feeling out of breath with talking, and vocal fatigue with voice use. A comprehensive interprofessional voice evaluation includes auditory-perceptual voice evaluation, laryngeal examination including videostroboscopy, acoustic and aerodynamic voice measures. These components provide valuable insight into laryngeal structure and function and individual voice use patterns and, in conjunction with stimulability testing, help identify candidacy for voice therapy and choice of therapeutic techniques.ConclusionA comprehensive, interprofessional evaluation of patients with VFMI is necessary to assess the role of voice therapy and develop a treatment plan. Although there is no efficacy data to support specific voice therapy techniques for treating VFMI, considerations for various techniques are provided.

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