scholarly journals Impact of human disturbance on temporal partitioning within carnivore communities

Mammal Review ◽  
2021 ◽  
Author(s):  
Anthony Sévêque ◽  
Louise K. Gentle ◽  
José Vicente López‐Bao ◽  
Richard W. Yarnell ◽  
Antonio Uzal
Keyword(s):  
Human Disturbance ◽  
Temporal Partitioning

scholarly journals Temporally and spatially partitioned behaviours of spinner dolphins: implications for resilience to human disturbance

2017 ◽  
Vol 4 (1) ◽  
pp. 160626 ◽  
Author(s):  
Julian A. Tyne ◽  
David W. Johnston ◽  
Fredrik Christiansen ◽  
Lars Bejder
Keyword(s):  
Human Disturbance ◽  
Human Activities ◽  
Time Series Data ◽  
Daily Basis ◽  
Series Data ◽  
Temporal Partitioning ◽  
Individual Fitness ◽  
Nocturnal Feeding ◽  
Spinner Dolphins ◽  
Long Term Impact

Selective forces shape the evolution of wildlife behavioural strategies and influence the spatial and temporal partitioning of behavioural activities to maximize individual fitness. Globally, wildlife is increasingly exposed to human activities which may affect their behavioural activities. The ability of wildlife to compensate for the effects of human activities may have implications for their resilience to disturbance. Resilience theory suggests that behavioural systems which are constrained in their repertoires are less resilient to disturbance than flexible systems. Using behavioural time-series data, we show that spinner dolphins ( Stenella longirostris ) spatially and temporally partition their behavioural activities on a daily basis. Specifically, spinner dolphins were never observed foraging during daytime, where resting was the predominant activity. Travelling and socializing probabilities were higher in early mornings and late afternoons when dolphins were returning from or preparing for nocturnal feeding trips, respectively. The constrained nature of spinner dolphin behaviours suggests they are less resilient to human disturbance than other cetaceans. These dolphins experience the highest exposure rates to human activities ever reported for any cetaceans. Over the last 30 years human activities have increased significantly in Hawaii, but the spinner dolphins still inhabit these bays. Recent abundance estimates (2011 and 2012) however, are lower than all previous estimates (1979–1981, 1989–1992 and 2003), indicating a possible long-term impact. Quantification of the spatial and temporal partitioning of wildlife behavioural schedules provides critical insight for conservation measures that aim to mitigate the effects of human disturbance.

Effects of human disturbance on understory woody species composition and diversity in fengshui forests

2009 ◽  
Vol 17 (5) ◽  
pp. 458 ◽  
Author(s):  
Lü Hao-rong ◽  
Liu Song-song ◽  
Zhu Jian-yun ◽  
Ye Yong-chang ◽  
Chen Hong-yue ◽  
...  
Keyword(s):  
Species Composition ◽  
Human Disturbance ◽  
Woody Species

Understanding the effects of human disturbance on scorpion diversity in Brazilian tropical forests

2021 ◽  
Author(s):  
André F. A. Lira ◽  
Stênio I. A. Foerster ◽  
Renato P. Salomão ◽  
Tiago J. Porto ◽  
Cleide M. R. Albuquerque ◽  
...  
Keyword(s):  
Tropical Forests ◽  
Human Disturbance

scholarly journals To what extent does the species composition of Macaronesian laurel forests depend on their human disturbance history and environmental drivers?

2021 ◽  
Vol 497 ◽  
pp. 119468
Author(s):  
Jesús Parada-Díaz ◽  
Jürgen Kluge ◽  
Víctor Bello-Rodríguez ◽  
Marcelino J. Del Arco Aguilar ◽  
Juana María González-Mancebo
Keyword(s):  
Species Composition ◽  
Human Disturbance ◽  
Environmental Drivers ◽  
Disturbance History

scholarly journals Evaluation of Human Disturbance on the Activity of Medium–Large Mammals in Myanmar Tropical Forests

Forests ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 290
Author(s):  
Giacomo Cremonesi ◽  
Francesco Bisi ◽  
Lorenzo Gaffi ◽  
Thet Zaw ◽  
Hla Naing ◽  
...  
Keyword(s):  
Human Disturbance ◽  
Daily Activity ◽  
Wildlife Conservation ◽  
Activity Patterns ◽  
Circular Statistics ◽  
Large Mammals ◽  
Human Presence ◽  
Significant Difference ◽  
The Status ◽  
Statistical Approaches

The effects of human disturbance represent one of the major threats for wildlife conservation. Many studies have shown that wildlife avoids or reduces direct contact with human activities through changes in activity patterns, and by minimizing spatiotemporal overlap. In this study, we investigated the possible effects of human presence on the temporal activity of medium-to-large mammals using two areas in Myanmar that differ in the intensity of human disturbance. We monitored temporal segregation mechanisms using camera trapping data and with two statistical approaches: daily activity overlaps between humans and wildlife and circular statistics. We did not find a significant difference in overlapping activity between areas but, thanks to circular statistics, we found that some species show changes in activity patterns, suggesting temporal avoidance. We observed that the daily activity of five species differed between areas of Myanmar, likely adopting mechanisms to reduce overlap in areas highly frequented by humans. Interestingly, these species are all threatened by hunting or poaching activities, four of which have been described in literature as “cathemeral”, or species that are active through day and night. This study suggests that some species adapt their behavior, at least partially, to avoid human presence in habitats with higher anthropic occurrence and increase our knowledge on the status of medium–large mammals in a poorly studied country as Myanmar.

scholarly journals Camera Trapping to Assess Status and Composition of Mammal Communities in a Biodiversity Hotspot in Myanmar

Animals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 880
Author(s):  
Giacomo Cremonesi ◽  
Francesco Bisi ◽  
Lorenzo Gaffi ◽  
Thet Zaw ◽  
Hla Naing ◽  
...  
Keyword(s):  
Human Disturbance ◽  
Habitat Degradation ◽  
Single Species ◽  
Wildlife Trade ◽  
Ecosystem Functions ◽  
Occupancy Models ◽  
Apex Predators ◽  
Disturbed Area ◽  
The Status ◽  
Mammal Communities

Tropical forests comprise a critically impacted habitat, and it is known that altered forests host a lower diversity of mammal communities. In this study, we investigated the mammal communities of two areas in Myanmar with similar environmental conditions but with great differences in habitat degradation and human disturbance. The main goal was to understand the status and composition of these communities in an understudied area like Myanmar at a broad scale. Using camera trap data from a three-year-long campaign and hierarchical occupancy models with a Bayesian formulation, we evaluated the biodiversity level (species richness) and different ecosystem functions (diet and body mass), as well as the occupancy values of single species as a proxy for population density. We found a lower mammal diversity in the disturbed area, with a significantly lower number of carnivores and herbivores species. Interestingly, the area did not show alteration in its functional composition. Almost all the specific roles in the community were present except for apex predators, thus suggesting that the effects of human disturbance are mainly effecting the communities highest levels. Furthermore, two species showed significantly lower occupancies in the disturbed area during all the monitoring campaigns: one with a strong pressure for bushmeat consumption and a vulnerable carnivore threatened by illegal wildlife trade.

Quantifying human disturbance on antipredator behavior and flush initiation distance in yellow-bellied marmots

2011 ◽  
Vol 129 (2-4) ◽  
pp. 146-152 ◽  
Author(s):  
Chunwang Li ◽  
Raquel Monclús ◽  
Terry L. Maul ◽  
Zhigang Jiang ◽  
Daniel T. Blumstein
Keyword(s):  
Human Disturbance ◽  
Antipredator Behavior
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