Movement Patterns of Adult Male Ovenbirds During the Post-Fledging Period in Fragmented and Forested Boreal Landscapes

Abstract Movement of forest songbirds among isolated forest patches following breeding represents an important but poorly understood component of landscape ecology and metapopulation theory. Using radio-telemetry, we followed 44 male Ovenbirds (Seiurus aurocapillus) during the post-fledging period to determine if movement patterns differed in landscapes dominated by agriculture versus those dominated by forest. No differences in home-range size, mean distance moved per day, or maximum distance moved were observed for males captured in a forested landscape vs. those captured in forest fragments in an agriculturally dominated landscape. Male Ovenbirds observed with young moved less than males without young and rarely crossed open gaps. Individuals that failed to breed moved more extensively than successful breeders, possibly in an effort to find new territories for use in future breeding seasons.

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Spatial Response to Linear Infrastructures by the Endangered Golden Lion Tamarin

Diversity ◽

10.3390/d11070100 ◽

2019 ◽

Vol 11 (7) ◽

pp. 100 ◽

Cited By ~ 1

Author(s):

Priscila da Silva Lucas ◽

Milene Alves-Eigenheer ◽

Talitha Mayumi Francisco ◽

James M. Dietz ◽

Carlos Ramón Ruiz-Miranda

Keyword(s):

Home Range ◽

Radio Telemetry ◽

Step Length ◽

Home Range Size ◽

Power Lines ◽

Home Ranges ◽

Forest Fragments ◽

Lion Tamarin ◽

Golden Lion Tamarin ◽

Linear Infrastructures

Linear infrastructures are a primary driver of economic development. However, they also can negatively affect wildlife by mortality and the barrier effect. In this paper, we address how paved and unpaved roads, high-tension power lines, and gas/oil pipelines affect home range size, core areas, and movement in an endangered primate, the golden lion tamarin (GLT). Location data were recorded using radio telemetry on 16 groups in two protected areas and in privately owned forest fragments. The GLT’s home range, not core area, increased in size for the groups that occupied locations far from linear infrastructures; home range was also significantly influenced by available forest size. None of the home ranges contained a road, but home ranges did contain power lines. GLTs used the surrounding landscape near all types of infrastructure. Movement analysis showed that most of the step lengths (distances between subsequent locations) were less than 100 m between two consecutive locations, but step length was longer for roads and longer for groups in fully forested habitats. Tamarins avoided paved roads when in close proximity to this type of infrastructure; this behavior increased in areas without adequate adjacent forest habitat. Our results show that linear infrastructures differ in their level of impact: roads can act as a barrier, whereas other types of infrastructure have minimal effect on movement and home range. We discuss these differences in impact in terms of structure, maintenance schedules, and edge effects of infrastructure.

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Spatial ecology of the quokka (Setonix brachyurus) in the southern forests of Western Australia: implications for the maintenance, or restoration, of functional metapopulations

Australian Mammalogy ◽

10.1071/am18036 ◽

2020 ◽

Vol 42 (1) ◽

pp. 38

Author(s):

Karlene Bain ◽

Adrian Francis Wayne ◽

Roberta Bencini

Keyword(s):

Home Range ◽

Western Australia ◽

Riparian Vegetation ◽

Spatial Ecology ◽

Radio Telemetry ◽

Movement Patterns ◽

Home Range Size ◽

Range Size ◽

Habitat Patches ◽

Preferred Habitat

We used radio-telemetry to investigate the home-range size and movement patterns of the quokka (Setonix brachyurus) in the southern forests of Western Australia to assess the ability of animals to move between increasingly segregated habitat patches and to identify implications for metapopulation function. We found that quokkas in this region have a much larger home range (71 ± 5.8 ha) and move larger distances (up to 10 km per night) than previously reported for this species in other regions. Temporal and sex variations in home-range size, overlap and movement patterns provided insights into the social structure, reproductive strategies and resource availability for the species in this part of its range. Quokkas moved up to 14 km between habitat patches, where these patches were connected by dense riparian vegetation. While riparian vegetation was used exclusively for movement between habitat patches, quokkas spent only 40% of their time in this ecotype. The current management paradigm of protecting linear riparian vegetation as habitat for quokkas is important for maintaining habitat connectivity, but is unlikely to meet broader habitat and spatial requirements. Management of preferred habitat as well as riparian corridors is necessary for the maintenance of a functional metapopulation.

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Movement patterns of feral predators in an arid environment – implications for control through poison baiting

Wildlife Research ◽

10.1071/wr08098 ◽

2009 ◽

Vol 36 (5) ◽

pp. 422 ◽

Cited By ~ 64

Author(s):

K. E. Moseby ◽

J. Stott ◽

H. Crisp

Keyword(s):

Home Range ◽

Sand Dunes ◽

Activity Patterns ◽

Movement Patterns ◽

Home Range Size ◽

Range Size ◽

Home Ranges ◽

Feral Cats ◽

Poison Baiting ◽

Specific Variation

Control of introduced predators is critical to both protection and successful reintroduction of threatened prey species. Efficiency of control is improved if it takes into account habitat use, home range and the activity patterns of the predator. These characteristics were studied in feral cats (Felis catus) and red foxes (Vulpes vulpes) in arid South Australia, and results are used to suggest improvements in control methods. In addition, mortality and movement patterns of cats before and after a poison-baiting event were compared. Thirteen cats and four foxes were successfully fitted with GPS data-logger radio-collars and tracked 4-hourly for several months. High intra-specific variation in cat home-range size was recorded, with 95% minimum convex polygon (MCP) home ranges varying from 0.5 km2 to 132 km2. Cat home-range size was not significantly different from that of foxes, nor was there a significant difference related to sex or age. Cats preferred habitat types that support thicker vegetation cover, including creeklines and sand dunes, whereas foxes preferred sand dunes. Cats used temporary focal points (areas used intensively over short time periods and then vacated) for periods of up to 2 weeks and continually moved throughout their home range. Aerial baiting at a density of 10 baits per km2 was ineffective for cats because similar high mortality rates were recorded for cats in both baited and unbaited areas. Mortality was highest in young male cats. Long-range movements of up to 45 km in 2 days were recorded in male feral cats and movement into the baited zone occurred within 2 days of baiting. Movement patterns of radio-collared animals and inferred bait detection distances were used to suggest optimum baiting densities of ~30 baits per km2 for feral cats and 5 per km2 for foxes. Feral cats exhibited much higher intra-specific variation in activity patterns and home-range size than did foxes, rendering them a potentially difficult species to control by a single method. Control of cats and foxes in arid Australia should target habitats with thick vegetation cover and aerial baiting should ideally occur over areas of several thousand square kilometres because of large home ranges and long-range movements increasing the chance of fast reinvasion. The use of temporary focal points suggested that it may take several days or even weeks for a cat to encounter a fixed trap site within their home range, whereas foxes should encounter them more quickly as they move further each day although they have a similar home-range size. Because of high intra-specific variability in activity patterns and home-range size, control of feral cats in inland Australia may be best achieved through a combination of control techniques.

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Terrestrial mammal diversity in forests close to pineapple crops, Cutris San Carlos, Costa Rica.

UNED Research Journal ◽

10.22458/urj.v7i1.862 ◽

2015 ◽

Vol 7 (1) ◽

pp. 59-65

Author(s):

Jonathan Navarro P ◽

Alexander Gómez L

Keyword(s):

Conservation Status ◽

Forest Fragments ◽

Negative Effects ◽

Forest Patches ◽

Wild Mammals ◽

Predator Prey ◽

Terrestrial Mammal ◽

Terrestrial Mammals ◽

San Carlos ◽

Mammal Diversity

Pineapple crops reduce the size of forest fragments and generate pressure on biodiversity in the remnants. To determine potential negative effects of forest fragmentation we assessed diversity and composition of terrestrial mammals in forest patches on three farms under pineapple crops. We placedSherman and Tomahawk traps, footprints traps near water bodies, and made daily tracks to obtain traces and direct observation of mammals. We identified seven species of wild mammals, mostly omnivorous and under a least concern conservation status. The effect of cover type generated by the pineapple crops is consistent with mammal composition. Pineapple crops could enhance the most common wildlife problems, such as predator-prey relationships. Therefore, pineapple plantations, by causing fragmentation and lack of connectivity among forest patches, threaten extinction of mammals in some of their original range.

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Effects of forest fragmentation on neotropical fauna: current research and data availability

Environmental Reviews ◽

10.1139/a95-009 ◽

1995 ◽

Vol 3 (2) ◽

pp. 191-211 ◽

Cited By ~ 45

Author(s):

Holly L. Offerman ◽

Virginia H. Dale ◽

Scott M. Pearson ◽

Robert V. O'Neill ◽

Richard O. Bierregaard Jr.

Keyword(s):

Forest Fragmentation ◽

Amazon Basin ◽

Data Availability ◽

Forest Fragments ◽

Forest Patches ◽

Neotropical Fauna ◽

Using Data ◽

Spatially Explicit Data ◽

Biological Dynamics

Tropical deforestation often produces landscapes characterized by isolated patches of forest habitat surrounded by pasture, agriculture, or regrowth vegetation. Both the size and the distribution of these forest patches may influence the long-term persistence of faunal species. There is, therefore, a pressing need to understand faunal responses to patterns of forest fragmentation in tropical systems. The Biological Dynamics of Forest Fragments Project (BDFFP) provides a wealth of autecological information and spatially explicit data describing habitat use and movement of fauna between Amazonian forest fragments. Using data from the BDFFP and other studies in the Amazon Basin, this paper reviews the information available on tropical insects, frogs, birds, primates, and other mammals that can be used to identify and classify species most at risk for extirpation in fragmented forests.Key words: Amazonia, habitat fragmentation, rainforest, fauna, Biological Dynamics of Forest Fragmentation Project.

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Movement Patterns of Wintering Grassland Sparrows in Arizona

The Auk ◽

10.1093/auk/117.3.748 ◽

2000 ◽

Vol 117 (3) ◽

pp. 748-759 ◽

Cited By ~ 4

Author(s):

Caleb E. Gordon

Keyword(s):

Large Scale ◽

Radio Telemetry ◽

Movement Patterns ◽

Movement Pattern ◽

Summer Rainfall ◽

Movement Behavior ◽

Home Ranges ◽

Mark Recapture ◽

Mobile Species ◽

Study Sites

Abstract I used mark-recapture analysis and radio telemetry to characterize winter movement patterns of six grassland sparrows in southeastern Arizona. Mark-recapture data were generated by banding birds captured during repeated flush-netting sessions conducted on a series of 7-ha plots over three consecutive winters. This resulted in 2,641 captures of 2,006 individual sparrows of the six species. Radio telemetry was conducted concurrently on 20 individuals of four of these species. Recapture data and radio telemetry indicated that Cassin's Sparrow (Aimophila cassinii) and Grasshopper Sparrow (Ammodramus savannarum) were the most sedentary, followed by Baird's Sparrow (Ammodramus bairdii), Vesper Sparrow (Pooecetes gramineus), Savannah Sparrow (Passerculus sandwichensis), and Brewer's Sparrow (Spizella breweri). Grasshopper, Baird's, Savannah, and Vesper sparrows tended to remain within fixed home ranges during winter. With the exception of Savannah Sparrows, whose movement behavior varied among study sites, movement patterns remained constant within species across years and study sites despite radical fluctuations in the absolute and relative abundances of all species. Interspecific differences in movement pattern suggest that species in this system partition niche space according to the regional-coexistence mechanism. Abundances of the most sedentary species, Cassin's, Grasshopper, and Baird's sparrows, were poorly or negatively correlated with summer rainfall at the between-year landscape scale, whereas abundances of the more mobile Savannah, Vesper, and Brewer's sparrows were strongly positively correlated. This is consistent with the theoretical prediction that movement constrains large-scale habitat selection, favoring mobile species in fragmented environments.

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Animal Movement Prediction Based on Predictive Recurrent Neural Network

Sensors ◽

10.3390/s19204411 ◽

2019 ◽

Vol 19 (20) ◽

pp. 4411 ◽

Cited By ~ 2

Author(s):

Jehyeok Rew ◽

Sungwoo Park ◽

Yongjang Cho ◽

Seungwon Jung ◽

Eenjun Hwang

Keyword(s):

Neural Network ◽

Recurrent Neural Network ◽

Network Architecture ◽

Animal Movement ◽

Movement Patterns ◽

Behavior Changes ◽

Movement Prediction ◽

Prediction Scheme ◽

Spatiotemporal Changes ◽

Breeding Seasons

Observing animal movements enables us to understand animal behavior changes, such as migration, interaction, foraging, and nesting. Based on spatiotemporal changes in weather and season, animals instinctively change their position for foraging, nesting, or breeding. It is known that moving patterns are closely related to their traits. Analyzing and predicting animals’ movement patterns according to spatiotemporal change offers an opportunity to understand their unique traits and acquire ecological insights into animals. Hence, in this paper, we propose an animal movement prediction scheme using a predictive recurrent neural network architecture. To do that, we first collect and investigate geo records of animals and conduct pattern refinement by using random forest interpolation. Then, we generate animal movement patterns using the kernel density estimation and build a predictive recurrent neural network model to consider the spatiotemporal changes. In the experiment, we perform various predictions using 14 K long-billed curlew locations that contain their five-year movements of the breeding, non-breeding, pre-breeding, and post-breeding seasons. The experimental results confirm that our predictive model based on recurrent neural networks can be effectively used to predict animal movement.

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Fall Movements of Allegheny Woodrats in Harvested and Intact Stands in West Virginia

Northern Journal of Applied Forestry ◽

10.1093/njaf/22.4.281 ◽

2005 ◽

Vol 22 (4) ◽

pp. 281-284 ◽

Cited By ~ 4

Author(s):

Benjamin S. Hornsby ◽

Alina M. Ruiz ◽

Steven B. Castleberry ◽

Nikole L. Castleberry ◽

W. Mark Ford ◽

...

Keyword(s):

West Virginia ◽

Home Range ◽

Radio Telemetry ◽

Timber Harvesting ◽

Home Range Size ◽

Range Size ◽

Habitat Alterations ◽

Allegheny Woodrat ◽

Allegheny Mountains ◽

Foraging Movements

Abstract Populations of the Allegheny woodrat (Neotoma magister) have experienced declines over the last 30 years, particularly in the northern and western parts of their range. Although relatively untested, silvicultural practices that alter forest structure and composition have been hypothesized as having negative impacts on Allegheny woodrat habitat and populations. To investigate the effects of timber harvesting on Allegheny woodrats in the Allegheny Mountains of West Virginia, we compared home range size and foraging movements between woodrats adjacent to a harvested stand to those in an intact forest stand during fall 1997 using radio telemetry. Mean home range size of all woodrats combined was 0.65 (±0.20) ha. Mean home range, movement rate, and maximum distance traveled from the den did not differ between the harvested and intact stands or between sex or age classes. Home range and foraging movements in fall were considerably smaller than those documented from summer in previous studies. It is likely that home range and foraging movements are affected less by surrounding habitat alterations in fall and winter than in summer because of limited movements away from the outcrop and reliance on cached foods.North. J. Appl. For. 22(4):281–284.

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Movement and spatial use patterns of California sea otters

Canadian Journal of Zoology ◽

10.1139/z96-207 ◽

1996 ◽

Vol 74 (10) ◽

pp. 1841-1849 ◽

Cited By ~ 26

Author(s):

Katherine Ralls ◽

Thomas C. Eagle ◽

Donald B. Siniff

Keyword(s):

Movement Patterns ◽

Extended Period ◽

Home Range Size ◽

Adult Males ◽

Sea Otters ◽

Daily Monitoring ◽

Use Patterns ◽

Radio Transmitters ◽

Spatial Use ◽

Short Time

Movement patterns of sea otters (Enhydra lutris) were followed by daily monitoring of 40 individuals with implanted radio transmitters. Otters of all age and sex classes were most often found within 1–2 km of their locations on the previous day. However, individuals often remained within a small area for an extended period and then suddenly moved a much greater distance within a short time period. There were significant differences among age–sex classes, but not months, in the mean monthly distances between successive daily locations and between extreme locations of individual otters. There were significant differences among both age–sex classes and months in the harmonic mean distance deviation. For all three measures, juvenile males tended to move the greatest distances. Adult males tended to be more sedentary than adult females over the short term, but traveled over greater distances in the long term. Individuals within age–sex classes had different movement patterns, and individuals often had different movement patterns during the same month in successive years. Estimates of the area used by individual otters during a single 24-h period (6.9–1166.4 ha) overlapped previous estimates of home-range size based on much longer time periods.

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