Behavioral plasticity of a threatened parrot in human-modified landscapes

Salinas-Melgoza, Alejandro; Salinas-Melgoza, Vicente; Wright, Timothy F.

doi:10.1016/j.biocon.2012.12.013

Cited by 40 publications

(34 citation statements)

References 75 publications

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“…Due to the ever-increasing human impact on natural systems, the quest to understand key concepts in animal ecology, such as resource use, home range, and dispersal, becomes more crucial than ever (Salinas-Melgoza et al 2013;Campos et al 2014). Hence, ecologists devote more attention to habitat selection than to any other branch in this discipline (Mayor et al 2009).…”

Section: Introductionmentioning

confidence: 97%

Ecological dynamics in habitat selection of reindeer: an interplay of spatial scale, time, and individual animal's choice

Pape

Löffler

2015

Polar Biol

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While striving for ''global'' species models of habitat selection, spatiotemporal variation in utilization patterns within a particular habitat and intraspecies variation in space use are still poorly understood. We addressed these challenges by exploring habitat use of domesticated reindeer (Rangifer tarandus tarandus), focusing on factors that underlie ecological dynamics in habitat selection. We analyzed habitat selection of 15 (±2) female reindeer in southern Norway separately for (a) region and home range, (b) seasonality, and (c) each Global Positioning System (GPS)-collared reindeer. We explicitly evaluated spatiotemporal and intraspecies variability in habitat selection by applying multivariate ordination techniques based on the niche concept. In contrast to global assumptions, our results reveal a considerable and partly unpredictable amount of variation in habitat selection resulting from the interplay of spatial scale, time, and individual animal choice. Thus, we conclude that across-scale approaches describing animal space use facilitate better understanding of habitat selection instead of finding a single ''best'' model that indicates the strongest species-habitat relationships.

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Section: Introductionmentioning

confidence: 97%

Ecological dynamics in habitat selection of reindeer: an interplay of spatial scale, time, and individual animal's choice

Pape

Löffler

2015

Polar Biol

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“…Nevertheless, individuals may be able to adjust their behaviour to persist in human‐influenced landscapes. Behavioural adjustments manifest in various ways, including changes in movement patterns (Salinas‐Melgoza et al , Tucker et al ), or changes in the social systems and interactions with conspecifics (Banks et al ). Especially aerial insectivores may compensate for human‐induced changes in prey abundance and distribution through their high mobility (Kniowski and Gehrt ), and thus may be able to exploit a multitude of landscapes.…”

Section: Introductionmentioning

confidence: 99%

Landscape structure influences the use of social information in an insectivorous bat

Roeleke

Blohm²,

Hoffmeister³

et al. 2020

Oikos

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In anthropogenic landscapes, aerial insectivores are often confronted with variable habitat complexity, which may influence the distribution of prey. Yet, high mobility may allow aerial insectivores to adjust their foraging strategy to different prey distributions. We investigated whether aerial‐hunting common noctules Nyctalus noctula adjust their foraging strategy to landscapes with different habitat complexity and assumingly different prey distribution. We hypothesized that the movement behaviour of hunting common noctules and changes of movement behaviour in reaction towards conspecifics would depend on whether they hunt in a structurally poor cropland dominated landscape or a structurally rich forest dominated landscape. We tracked flight paths of common noctules in northeastern Germany using GPS loggers equipped with an ultrasonic microphone that recorded foraging events and presence of conspecifics. Above cropland, common noctules hunted mainly during bouts of highly tortuous and area restricted movements (ARM). Bats switched from straight flight to ARM after encountering conspecifics. In the forested landscape, common noctules hunted both during ARM and during straight flights. The onset of ARM did not correlate with the presence of conspecifics. Common noctules showed a lower feeding rate and encountered more conspecifics above the forested than above the cropland dominated landscape. We conjecture that prey distribution above cropland was patchy and unpredictable, thus making eavesdropping on hunting conspecifics crucial for bats during search for prey patches. In contrast, small scale structural diversity of the forested landscape possibly led to a more homogeneous prey distribution at the landscape scale, thus enabling bats to find sufficient food independent of conspecific presence. This suggests that predators depending on ephemeral prey can increase their foraging success in structurally poor landscapes by using social information provided by conspecifics. Hence, a minimum population density might be obligatory to enable successful foraging in simplified landscapes.

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“…In addition, our results suggested that the increased HR reflects behavioural flexibility (Salinas-Melgoza, Salinas-Melgoza, & Wright, 2013), which is thought to facilitate adaptation to habitat heterogeneity in both space and time (Pigliucci, 2001). In addition, our results suggested that the increased HR reflects behavioural flexibility (Salinas-Melgoza, Salinas-Melgoza, & Wright, 2013), which is thought to facilitate adaptation to habitat heterogeneity in both space and time (Pigliucci, 2001).…”

Section: Differences In Foraging Behavioursmentioning

confidence: 75%

Behavioural plasticity and trophic niche shift: How wintering geese respond to habitat alteration

et al. 2019

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The accelerated rate of human‐induced environmental change poses a significant challenge for wildlife. The ability of wild animals to adapt to environmental changes has important consequences for their fitness, survival, and reproduction. Behavioural flexibility, an immediate adjustment of behaviour in response to environmental variability, may be particularly important for coping with anthropogenic change. The main aim of this study was to quantify the response of two wintering goose species (bean goose Anser fabalis and lesser white‐fronted goose Anser erythropus) to poor habitat condition at population level by studying foraging behaviour. In addition, we tested whether behavioural plasticity could alter trophic niche. We characterised foraging behaviours and calculated daily home range (HR) of the geese using global positioning system tracking data. We calculated standard ellipse areas to quantify niche width using the δ13C and δ15N values of individual geese. We linked behavioural plasticity with habitat quality using ANCOVA (analysis of covariance) models. We also tested the correlation between standard ellipse areas and HR using ANCOVA model. We found significant differences in geese foraging behaviours between years in their daily foraging area, travel distance and speed, and turning angle. Specifically, the birds increased their foraging area to satisfy their daily energy intake requirement in response to poor habitat conditions. They flew more sinuously and travelled faster and longer distances on a daily basis. For the endangered lesser white‐fronted goose, all behaviour variables were associated with habitat quality. For bean goose, only HR and turning angle were correlated with habitat quality. The birds, especially the lesser white‐fronted goose, may have had a higher trophic position under poor conditions. Our findings indicate that wintering geese showed a high degree of behavioural plasticity. However, more active foraging behaviours under poor habitat condition did not lead to a broader trophic niche. Habitat availability could be responsible to the divergent responses of foraging HR and isotopic niche to human‐induced environmental change. Therefore, maintaining natural hydrological regimes during the critical period (i.e. September–November) to ensure that quality food resources are available is central to the future of populations of geese within the East Asian–Australasian Flyway.

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Behavioral plasticity of a threatened parrot in human-modified landscapes

Cited by 40 publications

References 75 publications

Ecological dynamics in habitat selection of reindeer: an interplay of spatial scale, time, and individual animal's choice

Ecological dynamics in habitat selection of reindeer: an interplay of spatial scale, time, and individual animal's choice

Landscape structure influences the use of social information in an insectivorous bat

Behavioural plasticity and trophic niche shift: How wintering geese respond to habitat alteration

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