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Data from: Netted crop covers reduce honey bee foraging activity and colony strength in a mass flowering crop
负责人:
Evans, Lisa
关键词:
colony strength foraging behaviour colony health honey bee pollination protected cropping
DOI:
doi:10.5061/dryad.39pt227
摘要:
(including pollen-, nectar-, and na?ve foragers) was monitored in a subset of the hives fitted with RFID readers. Simultaneously, we evaluated
Data from: Achromatic plumage brightness predicts stress resilience and social interactions in tree swallows (Tachycineta bicolor)
负责人:
关键词:
plumage signals;social feedback;Tachycineta bicolor;Receiver-dependent costs;Glucocorticoids
DOI:
doi:10.5061/dryad.46mm022
摘要:
social interactions using an RFID network that allowed us to track the identity of every individual that visited each nest for the entire season. Prior to treatments
Data from: High detectability with low impact: optimising large PIT tracking systems for cave-dwelling bats
负责人:
关键词:
bats;PIT-TAG;wildlife tracking;Miniopterus orianae bassanii;RFID;microchip;mark-recapture
DOI:
doi:10.5061/dryad.vh8t993
摘要:
Passive integrated transponder (PIT) tag technology permits the ‘resighting’ of animals tagged for ecological research without the need for physical re-trapping. While this is effective if animals pass within centimetres of tag readers, short-distance detection capabilities have prevented the use of this technology with many species. To address this problem, we optimised a large (15 m-long) flexible antenna system to provide a c. 8 m2 vertical detection plane for detecting animals in flight. We installed antennas at two roosting caves, including the primary maternity cave, of the critically endangered southern bent-winged bat (Miniopterus orianae bassanii) in south-eastern Australia. Testing of these systems indicated PIT-tags could be detected up to 105 cm either side of the antenna plane. Over the course of a three-year study, we subcutaneously PIT-tagged 2966 bats and logged over 1.4 million unique detections, with 97% of tagged bats detected at least once. The probability of encountering a tagged bat decreased with increasing environmental ‘noise’ (unwanted signal) perceived by the system. During the study we mitigated initial high noise levels by earthing both systems, which contributed to an increase in daily detection probability (based on the proportion of individuals known to be alive that were detected each day) from <0.2 (noise level ?30%) to 0.7-0.8 (noise level 5-15%). Conditional on a low (5%) noise level, model-based estimates of daily encounter probability were highest (>0.8) during peak breeding season when both female and male southern bent-winged bats congregate at the maternity cave. In this paper we detail the methods employed and make methodological recommendations for future wildlife research using large antennas, including earthing systems as standard protocol and quantifying noise metrics as a covariate influencing the probability of detection in subsequent analyses. Our results demonstrate that large PIT antennas can be used successfully to detect small volant species, extending the scope of PIT technology and enabling a much broader range of wildlife species to be studied using this approach.
Data from: Diurnal variation in the production of vocal information about food supports a model of social adjustment in wild songbirds
负责人:
关键词:
Cyanistes caeruleus;Parus major;Poecile palustris
DOI:
doi:10.5061/dryad.21b52d0
摘要:
. First, we assessed temporal variation in food-related vocal information produced in foraging flocks of tits (Paridae) using audio recordings at RFID

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