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Data logger

Michelle Thompson, Susan Cunningham, Andrew E McKechnie
Deserts are physiologically challenging environments for birds, with scarce, unpredictable water resources combined with air temperatures (Tair ) regularly exceeding avian body temperature (Tb ). For arid-zone birds, mismatches between water supply and demand are a constant threat, yet interspecific variation in trade-offs between hyperthermia avoidance and dehydration avoidance remain poorly understood, particularly for free-ranging individuals. We examined behavioural and physiological responses to high Tair in nine species representing three orders that vary substantially in their heat dissipation thresholds, specifically pant50 , the Tair at which panting behaviour is present in 50% of observations...
February 19, 2018: Physiology & Behavior
Stamatelopoulou Asimina, D Chapizanis, S Karakitsios, P Kontoroupis, D N Asimakopoulos, T Maggos, D Sarigiannis
Nowadays, the advancement of mobile technology in conjunction with the introduction of the concept of exposome has provided new dynamics to the exposure studies. Since the addressing of health outcomes related to environmental stressors is crucial, the improvement of exposure assessment methodology is of paramount importance. Towards this aim, a pilot study was carried out in the two major cities of Greece (Athens, Thessaloniki), investigating the applicability of commercially available fitness monitors and the Moves App for tracking people's location and activities, as well as for predicting the type of the encountered location, using advanced modeling techniques...
February 20, 2018: Environmental Monitoring and Assessment
Sam L Cox, Florian Orgeret, Mathieu Gesta, Charles Rodde, Isaac Heizer, Henri Weimerskirch, Christophe Guinet
Biologging technologies are changing the way in which the marine environment is observed and monitored. However, because device retrieval is typically required to access the high-resolution data they collect, their use is generally restricted to those animals that predictably return to land. Data abstraction and transmission techniques aim to address this, although currently these are limited in scope and do not incorporate, for example, acceleration measurements which can quantify animal behaviours and movement patterns over fine-scales...
January 2018: Methods in Ecology and Evolution
Gregory T Taylor, Joshua T Ackerman, Scott A Shaffer
Egg turning behavior is an important determinant of egg hatchability, but it remains relatively understudied. Here, we examined egg turning rates and egg temperatures in Forster's terns (Sterna forsteri). We used artificial eggs containing a data logger with a 3-D accelerometer, a magnetometer, and a temperature thermistor to monitor parental incubation behavior of 131 tern nests. Overall, adults turned their eggs an average (±SD) of 3.8 ± 0.8 turns h-1, which is nearly two times higher than that of other seabirds...
2018: PloS One
Allison A Baczynski, Pratigya J Polissar, Dieter Juchelka, Johannes Schwieters, Andreas Hilkert, Roger E Summons, Katherine H Freeman
RATIONALE: We report modifications to compound-specific isotope analyses (CSIA) to enable high-precision isotopic analysis of picomoles of carbon for intact organic molecules. This sample size is two orders of magnitude below the amounts required for commercial systems. The greatly enhanced sensitivity of this system expands molecular isotope studies and applications previously prohibited by low concentrations and small samples. METHODS: We utilize the resolving power and low volumetric flow rates of narrow-bore capillary GC to improve sample transfer efficiency while maintaining narrow peak widths...
February 15, 2018: Rapid Communications in Mass Spectrometry: RCM
Nozomi Nishiumi, Ayane Matsuo, Ryo Kawabe, Nicholas Payne, Charlie Huveneers, Yuuki Y Watanabe, Yuuki Kawabata
Although animal-borne accelerometers are effective tools for quantifying the kinematics of animal behaviors, quantifying burst movements of small and agile aquatic animals remains challenging. To capture the details of burst movements, accelerometers need to sample at a very high frequency, which will inevitably shorten the recording duration or increase the device size. To overcome this problem, we developed a high-frequency acceleration data-logger that can be triggered by a manually-defined acceleration threshold, thus allowing the selective measurement of burst movements...
February 14, 2018: Journal of Experimental Biology
Martin Geyer, Ulrike Praeger, Ingo Truppel, Holger Scaar, Daniel A Neuwald, Reiner Jedermann, Klaus Gottschalk
In cold storage facilities of fruit and vegetables, airflow is necessary for heat removal. The design of storage facilities influences the air speed in the surrounding of the product. Therefore, knowledge about airflow next to the product is important to plan the layout of cold stores adapted to the requirements of the products. A new sensing device (ASL, Air speed logger) is developed for omnidirectional measurement of air speed between fruit or vegetables inside storage bins or in bulk. It consists of four interconnected plastic spheres with 80 mm diameter each, adapted to the size of apple fruit...
February 13, 2018: Sensors
Eileen Wilson, Cong Zhu, Susan Galea, Ann Marko, Veronica Victoria Urdaneta, Walter Straus
BACKGROUND: The Centers for Disease Control and Prevention (CDC) coordinates the Vaccines For Children (VFC) program, which provides free vaccines to qualified children in the US. In 2009, the CDC issued Vaccine Storage Requirements, which were later replaced (2012) with an interim guidance and toolkit for vaccine storage and handling. The guidance called for use of Digital Data Loggers (DDL) to monitor vaccine storage temperatures. We describe a change in frequency of Incorrect Product Storage Reports (IPSRs) following issuance of the 2009 CDC guidance...
February 8, 2018: Vaccine
P J Rajala-Schultz, P N Gott, K L Proudfoot, G M Schuenemann
Drying cows off at the end of lactation is a routine management practice in dairy operations. Most dairies in the United States and many other countries dry cows off abruptly (e.g., stop milking cows on a set day), which has been shown to affect cow comfort. Gradually reducing milk production is another approach to dry cows off, routinely used in some countries and herds. The objective of the study was to evaluate the effects of abrupt and gradual milk cessation and milk yield at the time on cow activity after dry-off...
February 7, 2018: Journal of Dairy Science
Patricia A Beddows, Edward K Mallon
A low-cost data logging platform is presented that provides long-term operation in remote or submerged environments. Three premade "breakout boards" from the open-source Arduino ecosystem are assembled into the core of the data logger. Power optimization techniques are presented which extend the operational life of this module-based design to >1 year on three alkaline AA batteries. Robust underwater housings are constructed for these loggers using PVC fittings. Both the logging platform and the enclosures, are easy to build and modify without specialized tools or a significant background in electronics...
February 9, 2018: Sensors
Yingyi Lin, Michael M Borghese, Ian Janssen
BACKGROUND: The purpose of this study was to investigate whether there is a bi-directional relationship between sleep characteristics (time in bed, sleep duration, sleep chronology, and sleep efficiency) and time spent participating in outdoor active play among children. METHODS: Participants consisted of 433 children aged 10-13 years from Kingston, ON, Canada. Time in bed, sleep duration, sleep chronology, and sleep efficiency were measured for 8 consecutive nights using data from a sleep log and Actical accelerometer...
February 7, 2018: BMC Public Health
Floris M van Beest, Jonas Teilmann, Line Hermannsen, Anders Galatius, Lonnie Mikkelsen, Signe Sveegaard, Jeppe Dalgaard Balle, Rune Dietz, Jacob Nabe-Nielsen
Knowledge about the impact of anthropogenic disturbances on the behavioural responses of cetaceans is constrained by lack of data on fine-scale movements of individuals. We equipped five free-ranging harbour porpoises (Phocoena phocoena) with high-resolution location and dive loggers and exposed them to a single 10 inch3 underwater airgun producing high-intensity noise pulses (2-3 s intervals) for 1 min. All five porpoises responded to capture and tagging with longer, faster and more directed movements as well as with shorter, shallower, less wiggly dives immediately after release, with natural behaviour resumed in less than or equal to 24 h...
January 2018: Royal Society Open Science
Jahan Zeb Gul, Kim Young Su, Kyung Hyun Choi
Bio-mimicking the underwater sensors has tremendous potential in soft robotics, under water exploration and human interfaces. Pinniped are semiaquatic carnivores that use their whiskers to sense food by tracking the vortices left by potential prey. To detect and track the vortices inside the water, a fully 3D printed pinniped inspired multi-material whisker sensor is fabricated and characterized. The fabricated whisker is composed of a polyurethane rod with a length-to-diameter ratio (L/d) of 20:1 with four graphene patterns (length × diameter: 60 × 0...
January 3, 2018: Soft Robotics
H C Weigele, L Gygax, A Steiner, B Wechsler, J-B Burla
Lameness is one of the most prevalent diseases affecting the welfare of cows in modern dairy production. Lameness leads to behavioral changes in severely lame cows, which have been investigated in much detail. For early detection of lameness, knowledge of the effects of moderate lameness on cow behavior is crucial. Therefore, the behavior of nonlame and moderately lame cows was compared on 17 Swiss dairy farms. On each farm, 5 to 11 nonlame (locomotion score 1 of 5) and 2 to 7 moderately lame (locomotion score 3 of 5) cows were selected for data collection in two 48-h periods (A, B) separated by an interval of 6 to 10 wk...
December 28, 2017: Journal of Dairy Science
T N Suinyuy, S D Johnson
Heat and odour production can have profound effects on pollination in cycads. It is therefore expected that these traits would co-vary geographically with pollinator assemblages. Such intraspecific variation, may lead to the evolution of pollination ecotypes which can be an early stage of pollinator-mediated speciation. We measured cone temperatures using miniature temperature data loggers and examined the composition of cone volatile odours using headspace sampling and analysis by gas chromatography-mass spectrometry in four populations spanning the range of the African cycad Encephalartos ghellinckii...
December 27, 2017: Plant Biology
James Brinkhoff, John Hornbuckle, Thomas Dowling
Multisensor capacitance probes (MCPs) have traditionally been used for soil moisture monitoring and irrigation scheduling. This paper presents a new application of these probes, namely the simultaneous monitoring of ponded water level, soil moisture, and temperature profile, conditions which are particularly important for rice crops in temperate growing regions and for rice grown with prolonged periods of drying. WiFi-based loggers are used to concurrently collect the data from the MCPs and ultrasonic distance sensors (giving an independent reading of water depth)...
December 26, 2017: Sensors
Adam J Terando, Elsa Youngsteadt, Emily K Meineke, Sara G Prado
In light of global climate change, ecological studies increasingly address effects of temperature on organisms and ecosystems. To measure air temperature at biologically relevant scales in the field, ecologists often use small, portable temperature sensors. Sensors must be shielded from solar radiation to provide accurate temperature measurements, but our review of 18 years of ecological literature indicates that shielding practices vary across studies (when reported at all), and that ecologists often invent and construct ad hoc radiation shields without testing their efficacy...
December 2017: Ecology and Evolution
Anne-Marieke C Smid, Daniel M Weary, Joao H C Costa, Marina A G von Keyserlingk
Dairy cows display a partial preference for being outside, but little is known about what aspects of the outdoor environment are important to cows. The primary aim of this study was to test the preference of lactating dairy cattle for pasture versus an outdoor sand pack during the night. A secondary aim was to determine whether feeding and perching behavior changed when cows were provided outdoor access. A third objective was to investigate how the lying behavior of cows changed when given access to different outdoor areas...
December 7, 2017: Journal of Dairy Science
Camilo Ordóñez-Barona, Vadim Sabetski, Andrew A Millward, James Steenberg
Salts used for de-icing roads and sidewalks in northern climates can have a significant impact on water quality and vegetation. Sub-surface engineering systems, such as structural soil cells, can regulate water runoff and pollutants, and provide the necessary soil volume and irrigation to grow trees. However, the ability of such systems to manage de-icing salt contamination, and the impact of this contamination on the trees growing in them, have not been evaluated. We report on an field investigation of de-icing salt contamination in structural cells in two street-revitalization projects in Toronto, Canada, and the impact of this contamination on tree performance...
December 6, 2017: Environmental Pollution
Jade Vacquie-Garcia, Christian Lydersen, Martin Biuw, Tore Haug, Mike A Fedak, Kit M Kovacs
Identifying environmental characteristics that define the ecological niche of a species is essential to understanding how changes in physical conditions might affect its distribution and other aspects of its ecology. The present study used satellite relay data loggers (SRDLs) to study habitat use by Northeast Atlantic hooded seals (N = 20; 9 adult females, 3 adult males, and 8 juveniles). Three different methods were used in combination to achieve maximum insight regarding key foraging areas for hooded seals in this region, which have decline by 85% in recent decades: 1) first passage time (FPT); 2) vertical transit rate and; 3) change in dive drift rate...
2017: PloS One
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