Log in

Relevant bibliographies by topics / Peepers / Journal articles

Journal articles on the topic 'Peepers'

To see the other types of publications on this topic, follow the link: Peepers.

Author: Grafiati

Published: 10 December 2022

Last updated: 29 January 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Peepers.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Rashleigh, Karen R., and Michael Crowell. "Spring Peeper (Pseudacris crucifer) in Labrador, Canada: an update." Canadian Field-Naturalist 132, no. 2 (January 1, 2019): 163–67. http://dx.doi.org/10.22621/cfn.v132i2.2051.

Full text

Abstract:

Spring Peeper (Pseudacris crucifer) was first confirmed in Labrador in 1998, when vocalizations were recorded near Happy Valley-Goose Bay. Prior to this, only unsubstantiated reports of Spring Peepers in Labrador existed. In 2006, we visually documented nine Spring Peepers at six locations west of Happy Valley-Goose Bay, in the lower Churchill River valley. In 2014, using auditory surveys, we further documented 1–10 Spring Peepers calling at 13 additional locations in the same general area. These new records support earlier findings and provide additional information on the species at the extreme northeastern edge of its range.

APA, Harvard, Vancouver, ISO, and other styles

2

GOODMAN, DOUGLAS S. "Door Peepers." Optics and Photonics News 9, no. 6 (June 1, 1998): 50. http://dx.doi.org/10.1364/opn.9.6.000050.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Hanna, Dalal E. L., David R. Wilson, Gabriel Blouin-Demers, and Daniel J. Mennill. "Spring peepers Pseudacris crucifer modify their call structure in response to noise." Current Zoology 60, no. 4 (August 1, 2014): 438–48. http://dx.doi.org/10.1093/czoolo/60.4.438.

Full text

Abstract:

Abstract Acoustic interference can impede effective communication that is important for survival and reproduction of animals. In response to acoustic interference, some animals can improve signalling efficacy by altering the structure of their signals. In this study, we played artificial noise to 46 male spring peepers Pseudacris crucifer, on their breeding grounds, and tested whether the noise affected the duration, call rate, and peak frequency of their advertisement calls. We used two experimental noise treatments that masked either the high- or low-frequency components of an average advertisement call; this allowed us to evaluate whether frogs adaptively shift the peak frequency of their calls away from both types of interference. Our playback treatments caused spring peepers to produce shorter calls, and the high-frequency noise treatment caused them to lower the frequency of their calls immediately after the noise ceased. Call rate did not change in response to playback. Consistent with previous studies, ambient temperature was inversely related to call duration and positively related to call rate. We conclude that noise affects the structure of spring peeper advertisement calls, and that spring peepers therefore have a mechanism for altering signal structure in response to noise. Future studies should test if other types of noise, such as biotic or anthropogenic noise, have similar effects on call structure, and if the observed changes to call structure enhance or impair communication in noisy environments [Current Zoology 60 (4): 438–448, 2014].

APA, Harvard, Vancouver, ISO, and other styles

4

Teasdale, P. "Pore water sampling with sediment peepers." TrAC Trends in Analytical Chemistry 14, no. 6 (July 1995): 250–56. http://dx.doi.org/10.1016/0165-9936(95)91617-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Sidney Saylor Farr. "Coltsfoot, Spring Peepers, and New Potatoes." Appalachian Heritage 36, no. 2 (2008): 76–78. http://dx.doi.org/10.1353/aph.0.0010.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Strain, Gabriel F., Philip J. Turk, Jordan Helmick, and James T. Anderson. "Amphibian reproductive success as a gauge of functional equivalency of created wetlands in the Central Appalachians." Wildlife Research 44, no. 4 (2017): 354. http://dx.doi.org/10.1071/wr15177.

Full text

Abstract:

Context Evaluating the adequacy of created wetlands to replace the functions of lost natural wetlands is important because wetland mitigation is a major tool used to offset wetland losses. However, measurements such as vegetative cover and presence of wildlife may not provide sufficient evidence that created wetlands are functioning properly. Thus, examining the ecology of wetland biota such as that of amphibians may be a more useful surrogate for function. Aims The objectives of this study were to compare the abundance of amphibian metamorphs and survival and growth of larval amphibians in created wetlands, relative to natural wetlands. Methods Amphibian metamorphs were trapped in created and natural wetlands during the spring (April–May) and summer (June–August) of 2009 and 2010, and 165 green frog (Lithobates clamitans) larvae were raised during the spring of 2010 in laboratory aquaria containing water from created or natural wetlands. Key results Abundance of spring peeper (Pseudacris crucifer) metamorphs decreased significantly from 2009 to 2010 and abundance of green frog metamorphs increased with habitat complexity, but both were unaffected by wetland type. Detection probability of metamorphs of both species was low, increased with water temperature and declined with month of observation. Survival, growth curves and mass were similar among green frog larvae raised in created and natural wetland aquaria. Conclusions Our results suggest that the created and natural wetlands we examined function similarly with respect to providing adequate breeding habitat for green frogs and spring peepers. Implications Wetlands created to offset the loss of natural wetlands, although generally not designed for the purpose of wildlife habitat, can function as adequate breeding habitat for generalist amphibians such as green frogs and spring peepers.

APA, Harvard, Vancouver, ISO, and other styles

7

Wang, Frederick M. "Jeepers Creepers, Where'd You Get Those Peepers?" Journal of Pediatric Ophthalmology & Strabismus 53, no. 6 (November 1, 2016): 331–32. http://dx.doi.org/10.3928/01913913-20161017-01.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Pennisi, Elizabeth. "Jeepers, creatures, where'd you get those peepers?" Science 364, no. 6440 (May 9, 2019): 520. http://dx.doi.org/10.1126/science.364.6440.520.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Raymond, James T., Tim Reichard, Wynona Shellabarger, Robert Nordhausen, and Michael M. Garner. "Inclusion Body Myositis in Spring Peepers (Pseudacris Crucifer)." Journal of Veterinary Diagnostic Investigation 14, no. 6 (January 2002): 501–3. http://dx.doi.org/10.1177/104063870201400610.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Russell, Ronald W., Stephen J. Hecnar, and G. Douglas Haffner. "Organochlorine pesticide residues in Southern Ontario spring peepers." Environmental Toxicology and Chemistry 14, no. 5 (May 1995): 815–17. http://dx.doi.org/10.1002/etc.5620140511.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Dattagupta, Sharmishtha, Guy Telesnicki, Kathryn Luley, Benjamin Predmore, Michael McGinley, and Charles R. Fisher. "Submersible operated peepers for collecting porewater from deep-sea sediments." Limnology and Oceanography: Methods 5, no. 9 (September 2007): 263–68. http://dx.doi.org/10.4319/lom.2007.5.263.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Lovett, Gary M. "When Do Peepers Peep? Climate and the Date of First Calling in the Spring Peeper(Pseudacris crucifer)in Southeastern New York State." Northeastern Naturalist 20, no. 2 (June 2013): 333–40. http://dx.doi.org/10.1656/045.020.0209.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Thomas, Burt, and Michael A. Arthur. "Correcting porewater concentration measurements from peepers: Application of a reverse tracer." Limnology and Oceanography: Methods 8, no. 8 (August 2010): 403–13. http://dx.doi.org/10.4319/lom.2010.8.403.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Forester, Don C., and David V. Lykens. "Significance of Satellite Males in a Population of Spring Peepers (Hyla crucifer)." Copeia 1986, no. 3 (August 4, 1986): 719. http://dx.doi.org/10.2307/1444955.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Churchill, Thomas A., and Kenneth B. Storey. "Organ Metabolism and Cryoprotectant Synthesis during Freezing in Spring Peepers Pseudacris crucifer." Copeia 1996, no. 3 (August 1, 1996): 517. http://dx.doi.org/10.2307/1447515.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

van Oploo, P., I. White, B. C. T. Macdonald, P. Ford, and M. D. Melville. "The use of peepers to sample pore water in acid sulphate soils." European Journal of Soil Science 59, no. 4 (August 2008): 762–70. http://dx.doi.org/10.1111/j.1365-2389.2008.01020.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Steinmann, Philipp, and W. Shotyk. "Sampling anoxic pore waters in peatlands using ?peepers? for in situ-filtration." Analytical and Bioanalytical Chemistry 354, no. 5-6 (March 1, 1996): 709–13. http://dx.doi.org/10.1007/s0021663540709.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Woodward, Bruce D., and Joseph Travis. "Paternal effects on juvenile growth and survival in spring peepers (Hyla crucifer)." Evolutionary Ecology 5, no. 1 (January 1991): 40–51. http://dx.doi.org/10.1007/bf02285244.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Cook, Francis R. ""Rattlers, Peepers & Snappers" by Vince Franke and Jim Andrews. 2008. [DVD review]." Canadian Field-Naturalist 122, no. 1 (January 1, 2008): 85. http://dx.doi.org/10.22621/cfn.v122i1.530.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Layne, Jr.,, Jack R., and Matt E. Rice. "Postfreeze locomotion performance in wood frogs (Rana sylvatica) and spring peepers (Pseudacris crucifer)." Canadian Journal of Zoology 81, no. 12 (December 1, 2003): 2061–65. http://dx.doi.org/10.1139/z03-202.

Full text

Abstract:

Freeze tolerance exists among a few species of terrestrially hibernating North American frogs such as the wood frog (Rana sylvatica) and the spring peeper (Pseudacris crucifer). We investigated jump distance and swimming speed of these two frog species during postfreeze recovery because impaired performance, even if reversible, could have adverse ecological consequences for these frogs. Following a nonlethal freeze at –1.5 °C, R. sylvatica returned to the prefreeze level of both modes of locomotion sooner than P. crucifer (54 h vs. 11 d or longer). Wood frogs recovered slowly following more intense freezes: a –4.0 °C treatment group failed to reach the prefreeze level after 11 d, and a –3.0 °C treatment group took 54 h to reach 50% of the prefreeze level. As a result of their diminished locomotive performance, frogs recovering from natural freezes may be temporarily less able to exploit environmental resources and less able to escape predators active in winter. Nevertheless, given the massive biochemical and physiological disturbances accompanying tissue freezing, the recovery dynamics in these frogs seem sufficiently rapid to minimize most ecological risks and to permit early spring breeding. The faster recovery of locomotion in R. sylvatica compared with P. crucifer is consistent, however, with its greater northward distribution.

APA, Harvard, Vancouver, ISO, and other styles

21

Marshall, Vincent T., Sarah C. Humfeld, and Mark A. Bee. "Plasticity of aggressive signalling and its evolution in male spring peepers, Pseudacris crucifer." Animal Behaviour 65, no. 6 (June 2003): 1223–34. http://dx.doi.org/10.1006/anbe.2003.2134.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Taigen, Theodore L., Jennifer A. O'Brien, and Kentwood D. Wells. "The effect of temperature on calling energetics of the spring peeper (Pseudacris crucifer)." Amphibia-Reptilia 17, no. 2 (1996): 149–58. http://dx.doi.org/10.1163/156853896x00180.

Full text

Abstract:

AbstractOxygen consumption of calling male spring peepers (Pseudacris crucifer) was measured at five temperatures (7, 10, 15, 19, and 23°C) encompassing the natural range of variation encountered during the breeding season. Oxygen consumption increased as a linear function of calling rate, which in turn was a linear function of temperature. Hence, nearly all the increased cost of calling at warmer temperatures was accounted for by increases in calling rate; temperature did not appear to have any independent effect on activity metabolism. During one breeding season, ambient temperature increased throughout the season, resulting in an hourly cost of calling at the end of the season that was double the cost at the beginning. Periodic warm spells also resulted in major increases in the cost of calling.

APA, Harvard, Vancouver, ISO, and other styles

23

Gu, Xiao Zhi, Kai Ning Chen, Wei Huang, Xiang Bai, and Cheng Xin Fan. "The Influence of Emergent Macrophytes on Porewater PO₄^3- Distribution and Physic Transport in the Estuary Wetlands." Advanced Materials Research 610-613 (December 2012): 2683–87. http://dx.doi.org/10.4028/www.scientific.net/amr.610-613.2683.

Full text

Abstract:

Emergent macrophytes growth and development are believed to play an important role in nutrients physical transport processes and biogeochemical cycles. In the present study, a high-resolution in-situ sampling technology (Porewater equilibrators, Peepers) was employed to obtain vertical porewater PO43- profiles from the vegetated and the non-vegetated sediments, and accurately quantify benthic flux across sediment-water interface by Fick's first law applying porewater profiles of peepers, and coupled with core sediments incubation experiments as comparison. In addition, to distinguish benthic organism contribution to measured apparent benthic flux, we used HgCl2 (0.5% by weight) to suppress bottom fauna activity during the experiment. The results showed that porewater PO43- concentrations were far lower in vegetated than in the non-vegetated sediments, and also significantly lower in overlying water than in porewater. Whereas, porewater PO43- distribution fluctuated sharply at the upper sediments and kept an approximative constant below 8cm depth. Additionally, the average molecular diffusion flux applying Fick's first law fluctuated slightly within the range of 0.004 to 0.018 mg m-2 d-1(i.e., PO43- from porewater diffused into overlying water), which was higher in typha latifolia site, but lower in zizania latifolia site. PO43- average apparent diffusion flux based on core sediments incubation experiments varied between 1.03 and 6.78 mg m-2 d-1, and an opposite pattern was observed with respect to emergent macrophyte effects, as the PO43- flux at phragmites australis site was low (only 19% of control), but reached as high as 126% of the control in typha latifolia site. In unsterilized treatments (i.e., benthic organism participation), PO43- average net fluxes were lower up to an order of magnitude and more variable compared with those in sterilized treatments. Our results highlighted emergent macrophytes (e.g., phragmites australis) in estuary wetlands could efficiently relieved release risk from sediments, and reduce dissolved reactive phosphorus diffusion physical barrier crossed sediment-water interface by adding porosity in surface sediment.

APA, Harvard, Vancouver, ISO, and other styles

24

Zimmitti, Salvatore J. "Individual Variation in Morphological, Physiological, and Biochemical Features Associated with Calling in Spring Peepers (Pseudacris crucifer)." Physiological and Biochemical Zoology 72, no. 6 (November 1999): 666–76. http://dx.doi.org/10.1086/316706.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Hughey, Myra C., Jenifer B. Walke, Matthew H. Becker, Thomas P. Umile, Elizabeth A. Burzynski, Kevin P. C. Minbiole, Anthony A. Iannetta, Celina N. Santiago, William A. Hopkins, and Lisa K. Belden. "Short-Term Exposure to Coal Combustion Waste Has Little Impact on the Skin Microbiome of Adult Spring Peepers (Pseudacris crucifer)." Applied and Environmental Microbiology 82, no. 12 (April 1, 2016): 3493–502. http://dx.doi.org/10.1128/aem.00045-16.

Full text

Abstract:

ABSTRACTDisruptions to the microbiome can impact host health as can exposure to environmental contaminants. However, few studies have addressed how environmental contaminants impact the microbiome. We explored this question for frogs that breed in wetlands contaminated with fly ash, a by-product of coal combustion that is enriched in trace elements. We found differences in the bacterial communities among a fly ash-contaminated site and several reference wetlands. We then experimentally assessed the impacts of fly ash on the skin microbiome of adult spring peepers (Pseudacris crucifer). Frogs were exposed to fly ash in the laboratory for 12 h, the duration of a typical breeding event, and the skin microbiome was assessed after 5 days (experiment 1) or after 5 and 15 days (experiment 2). We examined bacterial community structure using 16S rRNA gene amplicon sequencing and metabolite profiles using high-pressure liquid chromatography-mass spectrometry (HPLC-MS). We found little impact as the result of acute exposure to fly ash on the bacterial communities or metabolite profiles in either experiment, suggesting that the bacterial symbiont communities of adults may be relatively resistant to brief contaminant exposure. However, housing frogs in the laboratory altered bacterial community structure in the two experiments, which supports prior research suggesting that environmental source pools are important for maintaining the amphibian skin microbiome. Therefore, for contaminants like fly ash that may alter the potential source pool of symbionts, we think it may be important to explore how contaminants affect the initial assembly of the amphibian skin microbiome in larval amphibians that develop within contaminated sites.IMPORTANCEAnimals are hosts to many symbiotic microorganisms, collectively called the microbiome, that play critical roles in host health. Therefore, environmental contaminants that alter the microbiome may impact hosts. Some of the most widespread contaminants, produced worldwide, are derived from the mining, storage, and combustion of coal for energy. Fly ash, for example, is a by-product of coal combustion. It contains compounds such as arsenic, selenium, cadmium, and strontium and is a recognized source of ground and surface water contamination. Here, we experimentally investigated the impacts of short-term fly ash exposure on the skin microbiome of spring peepers, one of many species of amphibian that sometimes breed in open fly ash disposal ponds. This research provides a look into the potential impacts of fly ash on an animal's microbiome and suggests important future directions for research on the effects of environmental contaminants on the microbiome.

APA, Harvard, Vancouver, ISO, and other styles

26

Forester, Don C., and W. Keith Harrison. "The Significance of Antiphonal Vocalisation By the Spring Peeper, Pseudacris Crucifer (Amphibia, Anura)." Behaviour 103, no. 1-3 (1987): 1–15. http://dx.doi.org/10.1163/156853987x00233.

Full text

Abstract:

Abstract1. Male spring peepers respond to acoustic interference from an encroaching conspecific with a graded behavioral sequence: they increase their call repetition rate, they emit one or more encounter calls, they entrain their calls to those of the intruder. 2. Once entrained, males continue to call synchronously for extended periods. 3. The time interval between the end of the leader's call and the beginning of the follower's call (the intraduet interval) is consistent, and is maintained despite changes in the duration or repetition rate of the leader's call. 4. Our data corroborate earlier investigators who concluded that the follower is stimulated by the onset of the leader's call, but is inhibited from calling until a fixed time interval after the leader has ceased calling. 5. Controlled discrimination tests reveal no differential mating success by the leader or the follower within a simulated duet. 6. Females exhibited a significant preference for a duet over a soloing male. 7. Although test females were able distinguish between the simultaneous broadcast of two phase-locked call sequences differing only in frequency, they did so in the absence of alternative, uncovered calls. 8. We conclude that antiphonal vocalisation functions primarily to reduce the potential for broadcast interference during the initial phase of female phonotaxis.

APA, Harvard, Vancouver, ISO, and other styles

27

Lykens, David V., Don C. Forester, and W. Keith Harrison. "The Significance of Persistent Vocalisation By the Spring Peeper, Pseudacris Crucifer (Anura: Hylidae)." Behaviour 108, no. 3-4 (1989): 197–208. http://dx.doi.org/10.1163/156853989x00303.

Full text

Abstract:

Abstract1. Male spring peepers exhibit individual variation in calling persistence within as well as between nights. 2. Weather conditions influence nightly variation in calling persistence throughout the reproductive season, but there is a pronounced decrease in calling persistence late in the season which appears to be independent of climate. 3. In four speaker experiments simulating males calling 20, 40, 60, and 80% of the time, there is a positive correlation between time spent calling and mating success. 4. On nights when there is significant variation in calling persistence, females likely respond to those males which are most persistent (i.e. , produce the most conspicuous calls). 5. In four speaker experiments simulating males calling 80, 85, 90 and 95% of the time, mating success is random, suggesting that during periods of peak mating activity the importance of female choice is diminished. 6. Calling persistence is not correlated with body size, therefore males of any age or size class have an opportunity to experience mating success. 7. Anuran vocalization is known to be energetically expensive, and persistent callers (regardless of their size) are likely in good physical condition. 8. We suggest that by responding (either actively or passively) to the most conspicuous calls, females convey to their offspring an advantage above and beyond that accrued by random mating.

APA, Harvard, Vancouver, ISO, and other styles

28

Qin, Chongyang, Xiaoyu Xu, and Erin Peck. "Sink or source? Insights into the behavior of copper and zinc in the sediment porewater of a constructed wetland by peepers." Science of The Total Environment 821 (May 2022): 153127. http://dx.doi.org/10.1016/j.scitotenv.2022.153127.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Dziurawiec, Suzanne, and Jan B. Deręgowski. "The Eyes Have it: A Perceptual Investigation of Eyespots." Perception 31, no. 11 (November 2002): 1313–22. http://dx.doi.org/10.1068/p3135.

Full text

Abstract:

Previous work with non-human species has shown that eyespots function as sign stimuli for defensive behaviour. But it is unknown to what extent eyespots are a dominant feature of objects for human perceptual responses. We examined whether young children perceive eyespots as a dominant object feature. One hundred and nineteen children from the first, second, and third grades were presented with small manikins, called “Joopes” that varied in the number, type, and arrangement of facial features. Four kinds of Joope heads were used: single element (eyes, mouth, or beak only), monovalent (spatially concordant eyes and mouth, or eyes and beak), ambivalent (asymmetrical eyes and beak, or eyes and mouth), and cyclopean (single eye with orthogonal beak). Two task groups (Peepers and Gobs) ‘helped’ the Joopes to either ‘see’ their food or ‘eat’ it, by placing food in one of 24 feeding dishes. Results indicated that responses made to the ambivalent Joopes differed, with greater ‘drift’ shown by the ‘eating’ group towards the ‘seeing’ responses than by the ‘seeing’ group towards the ‘eating’ responses. The dominant role of eyespots was thus confirmed for children in the second and third grades, but response inconsistencies in the youngest group suggested difficulties in handling incongruent stimuli. The implications of these results for understanding basic perceptual processes are discussed.

APA, Harvard, Vancouver, ISO, and other styles

30

Singh, Tajinder, Rajeev Bedi, and S. K. Gupta. "A Proposed Non Linear Block Based Approach for Image De-Noising Using Wavelet." INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY 5, no. 3 (May 15, 2013): 226–31. http://dx.doi.org/10.24297/ijct.v5i3.3523.

Full text

Abstract:

Coding of images or processing of images has played a momentous role in the success of digital communications and multimedia. Coding plays a major role is 3D mobile generation. The image processing methods have been exploited through the years to improve the quality of digital images. In the image processing system De-noising based coding is used extensively. As we know that, in low bit rate applications, the blocking artifacts problem arises, which severely reduce the visual quality of the image. Reducing blocking artifacts is essential to render the compressed visual data acceptable to the viewer. So, to detect and reduce noise from the image is a major task. So removing the noise from original signal is still a challenging problem for researchers. There have been several published algorithms and each approach has its assumptions, advantages, and limitations. For real-time applications like television, photo-phone, etc. it is essential to reduce the noise power as much as possible and to retain the fine details and the edges in the image as well. Moreover, it is very important to have very low computational complexity so that the filtering operation is performed in a short time for online and real-time applications. The main focus of this paper is first to define an algorithm and based on that a non linear threshold filter is described which not only preserve the actual image structures in the presence of different types of noises (Salt & peepers, Speckle and Gaussian Noise) as well as it provide betterÂ PSNR, MSE, MAE, & Time Complexity than others Classical algorithms.

APA, Harvard, Vancouver, ISO, and other styles

31

Kolozsvary, Mary B., and Robert K. Swihart. "Habitat fragmentation and the distribution of amphibians: patch and landscape correlates in farmland." Canadian Journal of Zoology 77, no. 8 (November 1, 1999): 1288–99. http://dx.doi.org/10.1139/z99-102.

Full text

Abstract:

We studied the effects of agriculturally induced fragmentation of forests and wetlands on amphibian assemblages and their distribution in a landscape of the midwestern United States. Potential breeding pools and upland areas in 30 forest patches of various sizes and degrees of isolation were intensively sampled for amphibians during April through August 1996 and March through August 1997 in Indiana. Species presence was documented using pitfall traps, anuran vocalization surveys, and cover-board sampling for adults and minnow traps and dip nets for larvae. Amphibian, anuran, and salamander assemblages were nonrandomly distributed across the landscape. American toads (Bufo americanus) and gray treefrogs (Hyla versicolor) were ubiquitous, whereas the distributions of several other species were ordered in a predictable manner. Logistic regression was used to develop predictive models of probabilities of occurrence for species in response to forest and wetland patch and landscape variables. Occurrence of redback salamanders (Plethodon cinereus) was positively associated with the area of a forest patch. Occurrence of ranid frogs was positively associated with proximity of wetlands for three of four species, and occurrences of smallmouth salamanders (Ambystoma texanum), spring peepers (Pseudacris crucifer), and western chorus frogs (Pseudacris triseriata) were related to the degree of wetland permanency. Multiple linear regression revealed that species richness was greatest for wetlands with intermediate degrees of permanency. The observed nonrandom distribution exhibited by several amphibians suggests that they respond to landscape-level attributes. Moreover, species differed substantially in the nature of their responses to fragmentation, consistent with differences in their life history and ecology.

APA, Harvard, Vancouver, ISO, and other styles

32

Walke, Jenifer B., Matthew H. Becker, Myra C. Hughey, Meredith C. Swartwout, Roderick V. Jensen, and Lisa K. Belden. "Most of the Dominant Members of Amphibian Skin Bacterial Communities Can Be Readily Cultured." Applied and Environmental Microbiology 81, no. 19 (July 10, 2015): 6589–600. http://dx.doi.org/10.1128/aem.01486-15.

Full text

Abstract:

ABSTRACTCurrently, it is estimated that only 0.001% to 15% of bacteria in any given system can be cultured by use of commonly used techniques and media, yet culturing is critically important for investigations of bacterial function. Despite this situation, few studies have attempted to link culture-dependent and culture-independent data for a single system to better understand which members of the microbial community are readily cultured. In amphibians, some cutaneous bacterial symbionts can inhibit establishment and growth of the fungal pathogenBatrachochytrium dendrobatidis, and thus there is great interest in using these symbionts as probiotics for the conservation of amphibians threatened byB. dendrobatidis. The present study examined the portion of the culture-independent bacterial community (based on Illumina amplicon sequencing of the 16S rRNA gene) that was cultured with R2A low-nutrient agar and whether the cultured bacteria represented rare or dominant members of the community in the following four amphibian species: bullfrogs (Lithobates catesbeianus), eastern newts (Notophthalmus viridescens), spring peepers (Pseudacris crucifer), and American toads (Anaxyrus americanus). To determine which percentage of the community was cultured, we clustered Illumina sequences at 97% similarity, using the culture sequences as a reference database. For each amphibian species, we cultured, on average, 0.59% to 1.12% of each individual's bacterial community. However, the average percentage of bacteria that were culturable for each amphibian species was higher, with averages ranging from 2.81% to 7.47%. Furthermore, most of the dominant operational taxonomic units (OTUs), families, and phyla were represented in our cultures. These results open up new research avenues for understanding the functional roles of these dominant bacteria in host health.

APA, Harvard, Vancouver, ISO, and other styles

33

Aurenhammer, F., and G. Stöckl. "On the Peeper's Voronoi diagram." ACM SIGACT News 22, no. 4 (September 1991): 50–59. http://dx.doi.org/10.1145/126546.126548.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Fritsch-Rössler, Waltraud. "Marke als Lochgucker." Zeitschrift fuer deutsches Altertum und Literatur 150, no. 4 (2021): 446. http://dx.doi.org/10.3813/zfda-2021-0015.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Scherer, Nancy J., Lynn Williams, Carol Stoel-Gammon, and Ann Kaiser. "Assessment of Single-Word Production for Children under Three Years of Age: Comparison of Children with and without Cleft Palate." International Journal of Otolaryngology 2012 (2012): 1–8. http://dx.doi.org/10.1155/2012/724214.

Full text

Abstract:

Background. This study reports comparative phonological assessment results for children with cleft lip and/or palate (CLP) to typically developing peers using an evaluation tool for early phonological skills.Methods. Children without clefts (NC = noncleft) and 24 children with CLP, ages of 18–36 months, were evaluated using theProfile of Early Expressive PhonologicalSkills (PEEPSs) [1]. Children interacted with toy manipulatives to elicit a representative sample of target English consonants and syllable structures that are typically acquired by children between 18 and 27 months of age.Results. Results revealed significant differences between the two groups with regard to measures of consonant inventory, place of articulation, manner of production, accuracy, and error patterns. Syllable structure did not indicate differences, with the exception of initial consonant clusters.Conclusions. findings provide support for PEEPS as a viable option for single-word assessment of children with CLP prior to 3 years of age.

APA, Harvard, Vancouver, ISO, and other styles

36

Peeples, Eric S. "ECI biocommentary: Eric Peeples." Pediatric Research 91, no. 1 (October 26, 2021): 12. http://dx.doi.org/10.1038/s41390-021-01799-7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Webster, Ian T., Peter R. Teasdale, and Nicola J. Grigg. "Theoretical and Experimental Analysis of Peeper Equilibration Dynamics." Environmental Science & Technology 32, no. 11 (June 1998): 1727–33. http://dx.doi.org/10.1021/es970815g.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Greguss, P. "The tube peeper: a new concept in endoscopy." Optics & Laser Technology 17, no. 1 (February 1985): 41–45. http://dx.doi.org/10.1016/0030-3992(85)90123-9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Skelly, David K. "Competition and the distribution of spring peeper larvae." Oecologia 103, no. 2 (1995): 203–7. http://dx.doi.org/10.1007/bf00329081.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Kennedy, J. Gerald. "PSA Honorary Member: Scott Peeples." Edgar Allan Poe Review 22, no. 2 (November 1, 2021): 429–30. http://dx.doi.org/10.5325/edgallpoerev.22.2.0429.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Kats, Lee B., and Randall G. van Dragt. "Background Color-Matching in the Spring Peeper, Hyla crucifer." Copeia 1986, no. 1 (February 10, 1986): 109. http://dx.doi.org/10.2307/1444895.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

SCHWARTZ, JOSHUA J., and H. CARL GERHARDT. "The neuroethology of frequency preferences in the spring peeper." Animal Behaviour 56, no. 1 (July 1998): 55–69. http://dx.doi.org/10.1006/anbe.1998.0737.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

McAlpine, Donald F., and John Gilhen. "Erythrism in Spring Peeper (Pseudacris crucifer) in Maritime Canada." Canadian Field-Naturalist 132, no. 1 (August 28, 2018): 43–45. http://dx.doi.org/10.22621/cfn.v132i4.2012.

Full text

Abstract:

We document three cases of erythrism in Spring Peeper (Pseudacris crucifer) in New Brunswick and Nova Scotia. Although the source of erythrism in Maritime P. crucifer remains uncertain, the occurrences reported here demonstrate this colour morph to be a widespread, although apparently rare, form in the Canadian Maritimes region.

APA, Harvard, Vancouver, ISO, and other styles

44

Stevenson, Deborah. "Peeps (review)." Bulletin of the Center for Children's Books 59, no. 1 (2005): 52. http://dx.doi.org/10.1353/bcc.2005.0295.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Maxson, Jeffrey. ""Government of da Peeps, for da Peeps, and by da Peeps": Revisiting the Contact Zone,." Journal of Basic Writing 24, no. 1 (2005): 24–47. http://dx.doi.org/10.37514/jbw-j.2005.24.1.03.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Webster, Ian T., Phillip W. Ford, and Nicola J. Grigg. "Pore-water convection induced by peeper emplacement in saline sediment." Limnology and Oceanography 44, no. 2 (March 1999): 425–30. http://dx.doi.org/10.4319/lo.1999.44.2.0425.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Lance, Stacey L., and Kentwood D. Wells. "Are Spring Peeper Satellite Males Physiologically Inferior to Calling Males?" Copeia 1993, no. 4 (December 28, 1993): 1162. http://dx.doi.org/10.2307/1447103.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Hartzell, Sean M., and Robyn E. Woodley. "An observation of arboreal activity in a Spring Peeper (Pseudacris crucifer)." Reptiles & Amphibians 23, no. 2 (August 1, 2016): 88–89. http://dx.doi.org/10.17161/randa.v23i2.14109.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Johnston, Scott G., Edward D. Burton, Annabelle F. Keene, Richard T. Bush, Leigh A. Sullivan, and Lloyd Isaacson. "Pore Water Sampling in Acid Sulfate Soils: A New Peeper Method." Journal of Environmental Quality 38, no. 6 (November 2009): 2474–77. http://dx.doi.org/10.2134/jeq2009.0135.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Syring, Rebecca S., Cynthia M. Otto, Rebecca E. Spivack, Klaus Markstaller, and James E. Baumgardner. "Maintenance of end-expiratory recruitment with increased respiratory rate after saline-lavage lung injury." Journal of Applied Physiology 102, no. 1 (January 2007): 331–39. http://dx.doi.org/10.1152/japplphysiol.00002.2006.

Full text

Abstract:

Cyclical recruitment of atelectasis with each breath is thought to contribute to ventilator-associated lung injury. Extrinsic positive end-expiratory pressure (PEEPe) can maintain alveolar recruitment at end exhalation, but PEEPe depresses cardiac output and increases overdistension. Short exhalation times can also maintain end-expiratory recruitment, but if the mechanism of this recruitment is generation of intrinsic PEEP (PEEPi), there would be little advantage compared with PEEPe. In seven New Zealand White rabbits, we compared recruitment from increased respiratory rate (RR) to recruitment from increased PEEPe after saline lavage. Rabbits were ventilated in pressure control mode with a fraction of inspired O2 (FiO2) of 1.0, inspiratory-to-expiratory ratio of 2:1, and plateau pressure of 28 cmH2O, and either 1) high RR ( 24 ) and low PEEPe (3.5) or 2) low RR ( 7 ) and high PEEPe ( 14 ). We assessed cyclical lung recruitment with a fast arterial Po2 probe, and we assessed average recruitment with blood gas data. We measured PEEPi, cardiac output, and mixed venous saturation at each ventilator setting. Recruitment achieved by increased RR and short exhalation time was nearly equivalent to recruitment achieved by increased PEEPe. The short exhalation time at increased RR, however, did not generate PEEPi. Cardiac output was increased on average 13% in the high RR group compared with the high PEEPe group ( P < 0.001), and mixed venous saturation was consistently greater in the high RR group ( P < 0.001). Prevention of end-expiratory derecruitment without increased end-expiratory pressure suggests that another mechanism, distinct from intrinsic PEEP, plays a role in the dynamic behavior of atelectasis.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!