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Occupancy

About: Occupancy is a research topic. Over the lifetime, 2757 publications have been published within this topic receiving 68288 citations.


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Patent
04 Feb 2015
TL;DR: In this article, the authors present a system and method for monitoring the occupancy of the seats in a vehicle, where sensors (105, 306, 513) provide measurements to a control circuit (108, 302, 506) that determines an occupancy state for each seat.
Abstract: Disclosed is a system and method for monitoring the occupancy of seating. Sensors (105; 306; 513) provide measurements to a control circuit (108; 302; 506) that determines an occupancy state for each seat. Information regarding the occupancy of the seats can be presented on a display (309; 402; 505). In some instances, additional inputs can be used to adjust the occupancy determinations to account for environmental factors. Also, the occupancy states of the seats can be cross-checked with a passenger manifest to facilitate the boarding of a vehicle containing the seating.

19 citations

Journal ArticleDOI
TL;DR: In this article, a population model was developed to project future site occupancy dynamics in spotted owls Strix occidentalis under climate change and forest management scenarios, and the model was parameterized with statistical relationships derived from dynamic occupancy analyses applied to 20 years of spotted owl presence/nondetection data in the Sierra Nevada, California, USA.
Abstract: Management strategies intended to reduce the impacts of future climate change on montane species ought to consider fine‐scale variation in microclimate (e.g. because of topography) and vegetation conditions that create climate refugia. Identifying potential refugia and quantifying their importance is facilitated by analytical approaches that explicitly model associations between dynamic population processes and environmental conditions. We developed a population model to project future site occupancy dynamics in spotted owls Strix occidentalis under climate change and forest‐management scenarios. The model was parameterized with statistical relationships derived from dynamic occupancy analyses applied to 20 years of spotted owl presence/nondetection data in the Sierra Nevada, California, USA. This approach allowed us to link colonization and extinction processes with spatial and temporal variation in vegetation characteristics, microclimate and weather while accounting for imperfect detection. Occupancy analyses indicated that greater prevalence of closed‐canopy forest in owl sites was associated with lower extinction and higher colonization rates. Both rates increased following consecutive warm summers, but warm summer temperatures had a greater effect on extinction than colonization. Following the warmest summers, extinction was most likely to occur in owl sites with cool microclimates and relatively little closed‐canopy forest, but extinction became considerably less likely in cool microclimates when greater amounts of closed‐canopy forest were present. By comparison, extinction probability was lower at owl sites with warmer microclimates and relatively invariant to the amount of closed‐canopy forest present. Simulations of our population model suggested that managing for greater amounts of closed‐canopy forest may ameliorate the potential negative effects of warm summer temperatures by the mid‐century, especially at high elevations. The model also allowed us to identify sites where potential management efforts would be most effective. Synthesis and applications. By modelling environmental processes influencing site colonization and extinction dynamics, we were able to identify features of potential climate change refugia for a montane species of management interest that could be promoted by land managers to increase species persistence. We also provided a general, process‐based population modelling approach for projecting changes in animal populations and developing habitat‐based climate change adaptation strategies using presence/nondetection data.

19 citations

Journal ArticleDOI
23 Mar 2016-PLOS ONE
TL;DR: Five recommendations are proposed that will help ensure the conservation of the only remaining area of suitable habitat for large mammals in the path of the proposed interoceanic canal is a relatively thin strip of forest that runs along the Caribbean Coast.
Abstract: Central America is experiencing rapid forest loss and habitat degradation both inside and outside of protected areas. Despite increasing deforestation, the Caribbean region of Nicaragua plays an important role in the survival or extinction of large mammal populations in Central America given that it still retains core areas of habitat for large mammal species. The proposed interoceanic canal project that would bisect the southern half of this Caribbean region represents a new threat that, combined with an advancing agricultural frontier, could affect populations of large mammal species such as jaguars, white-lipped peccaries, and Baird’s tapirs. We used occupancy models to examine the relative occupancy probabilities for an assemblage of terrestrial mammals in the south Caribbean region of Nicaragua to identify current core areas for our study species and conduct a preliminary evaluation of the potential impacts of the proposed interoceanic canal. We modeled a community level distribution of eight species with varying levels of sensitivity to human encroachment and a range of habitat associations. Our model results reveal three priority areas for terrestrial mammal conservation in our study area. The mapped predictions show that the only remaining area of suitable habitat for large mammals in the path of the proposed interoceanic canal is a relatively thin strip of forest that runs along the Caribbean Coast. In light of these findings, we propose five recommendations that will help ensure the conservation of this area of the proposed canal route as suitable habitat for our study species.

19 citations

Journal ArticleDOI
01 Oct 2009-Ibis
TL;DR: To ensure persistence of Wryneck populations in farmland, heterogeneous habitat matrices with high ant nest density and bare ground should be promoted and provision of artificial nesting cavities is likely to enhance territory occupancy.
Abstract: The frequency of territory occupancy is a good indicator of territory quality. We studied territory occupancy in a Swiss population of the Wryneck Jynx torquilla, a declining farmland woodpecker, with the aim of identifying key habitat features for conservation management. Both static and dynamic approaches were applied using data on nest-site occupancy of 100 territories from six successive years. The static approach models the probability of territory occupancy; the dynamic approach estimates territory colonization and extinction. Frequently occupied territories were settled earlier in the season, suggesting that they may be of better quality, and birds settling in these territories had higher breeding success. Probability of territory occupancy increased with the area of old pear orchards and decreased with the area of vegetable cultivation. Both the area of old pear orchards and the presence of conspecifics within a territory were positively related to territory colonization, whereas territory extinction was negatively related to habitat heterogeneity. Old pear orchards were characterized by having both the highest density of ant nests and the greatest amount of bare ground. The latter is likely to facilitate access to ant prey. To ensure persistence of Wryneck populations in farmland, heterogeneous habitat matrices with high ant nest density and bare ground should be promoted. Finally, provision of artificial nesting cavities is likely to enhance territory occupancy. Providing that these key resources are present, Wrynecks are likely to persist even in intensively farmed areas.

19 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023669
20221,420
2021234
2020217
2019236
2018209