bluuebunny/crossref_metadata_2025_split huggingface dataset:
Testing Darwin's Naturalization Conundrum using phylogenetic relationships: Generalizable patterns across disparate communities?
Authors: Ng Julienne , Weaver William N. , Laport Robert G. 
Published: December 2018

AbstractAimAlternative hypotheses of Darwin's Naturalization Conundrum (DNC) predict that the non‐native species that successfully establish within a community are those either more closely or more distantly related to the resident native species. Despite the increasing number of studies using phylogenetic data to testDNCand evaluate community assembly, it remains unknown whether phylogenetic relationships alone can be used to predict invasion susceptibility across communities differing environmentally and in disturbance history. In this study, we evaluate whether phylogenetic structure of diverse native communities predicts the occurrence of non‐native species and offers insight into community assembly.LocationEastern United States of America.MethodsWe examine multiple communities across a north–south transect of the eastern United States to test whether non‐native species richness and abundance are associated with phylogenetic diversity measures of the native community. We also test whether non‐native species are consistently closely or distantly related to native species using two approaches differing in phylogenetic scale and whether this differs with ecologically successful species.ResultsOur analyses did not unambiguously resolveDNC. Non‐native species richness and abundance decreased with increasing native species phylogenetic diversity. Within some communities, non‐native species were significantly more closely related to native species than expected by chance, and tended to be more often closely related to a native species than that native species was to other native relatives. When considering species abundance, only one community showed that ecologically successful non‐native species were closely related to resident species.Main conclusionsPhylogenetic relationships can reveal important details about community assembly in diverse ecological settings. However, given the multifaceted nature of community assembly, phylogenetic metrics alone have limited utility as a general predictive tool for community invasion. Our study highlights a need to incorporate additional types of data to better understand why some communities are more susceptible to non‐native species establishment.
Do migratory and resident birds differ in their responses to interacting effects of climate, weather and vegetation?
Authors: Lindenmayer David B. , Lane Peter , Foster Claire N. , Westgate Martin J. , Sato Chloe , Ikin Karen , Crane Mason , Michael Damian , Florance Daniel , Scheele Ben C. 
Published: December 2018

AbstractAimKnowledge of the individual and collective effects of habitat, weather variability and climate on bird populations is limited, with the result that species vulnerability to the collective impacts of global change is poorly understood. We quantified the effects of interactions between these potential drivers on the occurrence of resident, migratory and nomadic birds in Australian temperate woodlands.LocationA 1.8 million hectare temperate woodland belt in south‐eastern Australia.Time period2002–2015.Major taxa studiedTemperate woodland birds.MethodsWe used logistic mixed models to quantify the factors affecting the occurrence of three groups of birds (residents, partial migrants and nomads) at 203 long‐term field sites located in three vegetation types (restoration plantings, natural regrowth woodland and old growth woodland) surveyed repeatedly between 2002 and 2015. Potential explanatory variables included vegetation type, three long‐term climate variables (mean annual rainfall, maximum temperature and minimum temperature), and the three corresponding weather variables for 12 months preceding each survey.ResultsWe found four‐way interactions between bird movement category, type of vegetation cover and rainfall (both as a long‐term climate variable and as a short‐term weather variable). Increased occurrence of nomads and partial migrants, but not resident species, was associated with high short‐term rainfall. The effects were more marked in long‐term climatically wet areas, and also differed between vegetation types. Models for maximum and minimum temperature were simpler than those for rainfall but showed evidence of partial migrants and nomadic species avoiding low minimum or high maximum temperatures in some vegetation types.Main conclusionsOur analyses revealed that birds with different movement patterns exhibit different responses to weather and long‐term climate. Nomadic species in particular respond to rainfall strongly in climatically wet locations (presumably because of large pulses in resources). Drying conditions resulting from climate change may therefore create problems for the future persistence of nomadic bird species.
Conservation implications of ecological responses to extreme weather and climate events
Authors: Maxwell Sean L. , Butt Nathalie , Maron Martine , McAlpine Clive A. , Chapman Sarah , Ullmann Ailish , Segan Dan B. , Watson James E. M. 
Published: December 2018

AbstractAimMany conservation efforts now focus on mitigating biodiversity loss due to climate change. While a focus on impacts from mean, long‐term changes in climate is warranted, the vast majority of conservation plans largely ignore another key factor of climate change—changes in the frequency and intensity of extreme weather and climate events. A typology of the full range and severity of ecological responses to extreme events would help underpin tracking of their impacts.LocationGlobal.MethodsHere, we review 519 observational studies of ecological responses to extreme events between 1941 and 2015. We include responses from amphibians, birds, fish, invertebrates, mammals, plants and reptiles to cyclones, drought, flood, cold waves and heat waves.ResultsNegative ecological responses were the most commonly reported, accounting for 57% of all documented responses. There were over 100 cases of a >25% population decline and 31 cases of local extirpation. Sixty per cent of the studies in our review observed ecological responses for more than 1 year, and of the studies that monitored species or ecosystem recovery following exposure to an extreme event, 38% showed species or ecosystems did not recover to pre‐disturbance levels.Main conclusionsExtreme weather and climate events have profound implications for species and ecosystem management. We discuss current conceptual challenges associated with incorporating extreme events into conservation planning efforts, which include how to quantify species sensitivity and adaptive capacity to extreme events, how to account for interactions between extreme events and other stressors, and how to maximize adaptive capacity to more frequent and intense extreme events.
Radioisotope and stable isotope ratios (Δ14C, δ15N) suggest larval lamprey growth is dependent on both fresh and aged organic matter in streams
Authors: Evans Thomas M. , Bellamy Amber R. , Bauer James E. 
Published: December 2018

AbstractLampreys have a complex life cycle which includes a multi‐year infaunal larval stage (ammocoete). Gut content analysis has generally identified detritus (i.e., unidentifiable organic matter) as the major dietary component to ammocoetes, though algae can also be important. However, gut content preserves only a snapshot of the animal's diet and does not reflect assimilated material. In order to better characterise the nutritional sources supporting ammocoete growth, we analysed ammocoete body tissue and potential dietary sources at two streams using natural Δ14C and δ15N to estimate time‐integrated nutritional support. Bayesian isotope mixing models revealed differences in the importance of sources supporting ammocoetes between sites. Ammocoetes from a stream in a mixed land usage area (~50% agriculture, ~40% forest and ~10% developed) were primarily supported (mean: ~50%) by fresh terrestrial organic matter but were also supported by substantial contributions (mean: ~30%) by aged organic matter (AOM) and autochthonous material (algae; mean ~20%). In a predominantly forested (~90%) headwater stream, different modelling scenarios (uninformed or informed priors) suggested that algal support of ammocoete nutrition ranged from 7% to 45%. However, the model relying on informed priors developed from gut content analysis produced the low estimates, suggesting these were more reliable. When algae were a minor component of the nutrition at the forested site, ammocoetes were highly dependent on AOM (83 ± 26%; mean ± SD). Based on these findings, ammocoete growth and development are predicted to be strongly influenced by both land use and the availability of allochthonous and autochthonous materials of varying ages within streams.
Cytomolecular analysis of the male sex chromosome of Tropidacris cristata grandis (Thunberg, 1824) (Orthoptera: Romaleidae)
Authors: Baldissera Joana Neres Cruz , Pine Mariana Bozina , Lopes Thayná Bisson Ferraz , Dias Felipe Cordeiro , de Domenico Fernando Campos , da Rosa Renata 
Published: December 2018

AbstractMany species of grasshopper have an XX/XO sex chromosome system, including Tropidacris cristata grandis (23, XX/XO). The X chromosome behaves differently from the autosomes, but little is known about its origin and molecular composition. To better understand the genomic composition and evolutionary processes involved in the origin of the sex chromosomes, we undertook an analysis of its meiotic behavior, heterochromatin distribution and microdissection in T. c. grandis. Analysis of meiotic cells revealed a difference in the behavior of the X chromosome compared to the autosomes, with different patterns of condensation and cellular arrangement. Heterochromatic terminal blocks were predominant. The chromosome painting revealed a bright block in the centromeric/pericentromeric region of the X chromosome and slight markings in the other regions. In the autosomes, the X chromosome probe hybridized in the centromeric/pericentromeric region, and hybridization signals on terminal regions corresponding to the heterochromatic regions were also observed. The results showed that the X chromosome contains a significant amount of repetitive DNA. Based on the hybridization pattern, it is possible that the autosomes and sex chromosomes of T. c. grandis have a similar composition of repetitive DNAs, which could mean that the X chromosome has an autosomal origin.
Bank liquidity, macroeconomic risk, and bank risk: Evidence from the Financial Services Modernization Act
Authors: Chen I‐Ju , Lee Yu‐Yi , Liu Yong‐Chin 
Published: December 2018

AbstractWe investigate the empirical relationship between macroeconomic risk, bank liquidity, and bank risk surrounding the 1999 Financial Services Modernization Act. We propose that bank risk and liquidity are positively related as macroeconomic risk increases, and that this effect is particularly strong after the Gramm–Leach–Bliley Act (GLBA). We test our hypotheses by collecting data from 1994 to 2006 for banks in the United States. The results show that banks flush with liquid assets in a high macroeconomic risk environment conducted more lending activities following the enactment of the GLBA, leading to higher bank risk. Our study complements the understanding of bank liquidity management.
Application of a ridden horse ethogram to video recordings of 21 horses before and after diagnostic analgesia: Reduction in behaviour scores
Authors: Dyson S. , Van Dijk J. 
Published: December 2018

SummaryIdentification of low‐grade lameness is challenging. A whole horse ridden ethogram has been developed, describing 24 behavioural markers. Previous work indicated that the presence of ≥8 behavioural markers was likely to reflect musculoskeletal pain. The objectives of this repeated measures study were to compare the results of application of the ridden‐horse ethogram by trained and untrained assessors to horses before and after musculoskeletal pain had been substantially improved using diagnostic analgesia, and to assess the repeatability of the ethogram application among untrained assessors, and to compare their performance with a trained assessor. All horses underwent a comprehensive lameness investigation. Anonymised video recordings of 21 lame horses, ridden by professional riders in trot and canter before and after diagnostic analgesia had abolished lameness, were reviewed in a random order by a trained assessor and 10 untrained assessors. For each horse the duration of the recordings before and after diagnostic analgesia was time matched. The most frequent lameness grade was 2/8 (range 1–4). For the trained assessor, the number of behaviours exhibited by lame horses before diagnostic analgesia ranged from 3–12/24 (median 10; mean 8.9). After lameness and overall performance had been substantially improved using diagnostic analgesia, the number of behaviours ranged from 0–6/24 (median 3; mean 3.0). The decrease in behaviour scores for all assessors after diagnostic analgesia was highly significant (Z = 20,147, P<0.0001). Agreement between the trained assessor and untrained assessors was moderate before diagnostic analgesia and non‐existent after analgesia (Fleiss Kappa 0.49, 0 respectively), when individual behaviours were assessed. The main limitation was that horses were anonymised, but it was impossible to blind their identity, so bias is possible. It was concluded that despite limitations in the agreement between untrained observers and the trained assessor, the ethogram is a potentially valuable tool for determining the presence of musculoskeletal pain and may be useful for longitudinal monitoring of improvement in lameness.
Regulation of melanocyte stem cells in the pigmentation of skin and its appendages: Biological patterning and therapeutic potentials
Authors: Qiu Weiming , Chuong Cheng‐Ming , Lei Mingxing 
Published: December 2018

AbstractSkin evolves essential appendages and indispensable types of cells that synergistically insulate the body from environmental insults. Residing in the specific regions in the skin such as epidermis, dermis and hair follicle, melanocytes perform an array of vital functions including defending the ultraviolet radiation and diversifying animal appearance. As one of the adult stem cells, melanocyte stem cells in the hair follicle bulge niche can proliferate, differentiate and keep quiescence to control and coordinate tissue homeostasis, repair and regeneration. In synchrony with hair follicle stem cells, melanocyte stem cells in the hair follicles undergo cyclic activation, degeneration and resting phases, to pigment the hairs and to preserve the stem cells. Disorder of melanocytes results in severe skin problems such as canities, vitiligo and even melanoma. Here, we compare and summarize recent discoveries about melanocyte in the skin, particularly in the hair follicle. A better understanding of the physiological and pathological regulation of melanocyte and melanocyte stem cell behaviours will help to guide the clinical applications in regenerative medicine.
Acoustic detection and acoustic habitat characterisation of the critically endangered white‐bellied heron (Ardea insignis) in Bhutan
Authors: Dema Tshering , Towsey Michael , Sherub Sherub , Sonam Jigme , Kinley Kinley , Truskinger Anthony , Brereton Margot , Roe Paul 
Published: December 2018

Abstract

Growing developmental activities, such as hydropower construction, farm roads, and other human activities, are affecting the critically endangered white‐bellied heron (WBH). Out of a known global population of 60, 28 individuals inhabit the river basin area and freshwater lakes and ponds of Bhutan. Several constraints impede continuous monitoring of endangered species, such as the isolated and cryptic nature of the species and the remoteness of its habitat; to date, there are no long‐term reference data or techniques implemented for continuous monitoring of this species.

In this study, we designed acoustic detection and habitat characterisation methods using long‐duration recordings from three habitat areas in Bhutan. Acoustic indices were extracted and used to implement a species‐specific call detector and to generate habitat soundscape representations. Using WBH calls annotated in month‐long recordings from a known site, a novel indices‐based detector was implemented and tested. A total of 960 hr of continuous audio recordings from three habitats in Bhutan were analysed.

We found that a species call detector implemented using a combination of acoustic indices (that includes measures of spectral and temporal entropy and different angles of spectral ridges) has a correct detection rate of 81%. Additionally, visual inspection of the species’ acoustic habitat using long‐duration false‐colour spectrograms enabled qualitative assessment of acoustic habitat structure and other dominant acoustic events.

This study proposes a combined approach of species acoustic detection and habitat soundscape analysis for holistic acoustic monitoring of endangered species. As a direct outcome of this work, we documented acoustic reference data on the critically endangered WBH from multiple habitat areas and have analysed its temporal vocalisation patterns across sites.
Plant species–area relationships are determined by evenness, cover and aggregation in drylands worldwide
Authors: DeMalach Niv , Saiz Hugo , Zaady Eli , Maestre Fernando T. 
Published: December 2018

AbstractAimSpecies–area relationships (also known as “species–area curves” and “species accumulation curves”) represent the relationship between species richness and the area sampled in a given community. These relationships can be used to describe diversity patterns while accounting for the well‐known scale‐dependence of species richness. Despite their value, their functional form and parameters, as well as their determinants, have barely been investigated in drylands.Location171 drylands from all continents except Antarctica.Time period2006–2013.Major taxa studiedPerennial plants.MethodsWe characterized species–area relationships of plant communities by building accumulation curves describing the expected number of species as a function of the number of sampling units, and later compared the fit of three functions (power law, logarithmic and Michaelis–Menten). We tested the prediction that the effects of aridity, soil pH on the species–area relationship (SAR) are mediated by vegetation attributes such as evenness, cover and spatial aggregation.ResultsWe found that the logarithmic relationship was the most common functional form (c. 50%), followed by Michaelis–Menten (c. 33%) and power law (c. 17%). Functional form was mainly determined by evenness. Power‐law relationships were found mostly under low evenness, logarithmic relationships peaked under intermediate evenness and the Michaelis–Menten function increased in frequency with increasing evenness. The SAR parameters approximated by the logarithmic model [“small‐scale richness” (b0) and “accumulation coefficient” (b1)] were determined by vegetation attributes. Increasing spatial aggregation had a negative effect on the small‐scale richness and a positive effect on the accumulation coefficient, while evenness had an opposite effect. In addition, the accumulation coefficient was positively affected by cover. Interestingly, increasing aridity decreased small‐scale richness but did not affect the accumulation coefficient.Main conclusionsOur findings highlight the role of evenness, spatial aggregation and cover as the main drivers of SARs in drylands, the Earth’s largest biome.
MAKING A MARK
Authors: STARK LAURA 
Published: December 2018

ABSTRACTWalter Benjamin believed it was possible “to read what was never written.” His own writing and practices sought both to explain and model how a person might undertake this historical project. Benjamin's essay “On the Mimetic Faculty” provides a through line for the papers collected in this theme issue, which is designed to prompt further work and inquiry into how words—and historical materials broadly construed—might be read not only for their content but for insights about the past that may be evident in their arrangement, appearance, texture, or location. Scholars from history, philosophy, literature, anthropology, and beyond look at cases ranging from premodern Japan to present‐day South Africa to consider how and suggest why scholars might want to “read what was never written.” Together, the articles and commentaries are offered as a record of what has been done, in the eager anticipation of reading what has yet to be written.
PARABLES OF INSCRIPTION: SOME NOTES ON NARRATIVES OF THE ORIGIN OF WRITING
Authors: LURIE DAVID 
Published: December 2018

ABSTRACTThe story of the god Thoth and King Ammon in Plato's Phaedrus is perhaps the most familiar example of a script‐origin narrative, but such accounts also exist from ancient China (such as Xu Shen's postface to the Shuowen jiezi) and Mesopotamia (the poem “Enmerkar and the Lord of Aratta”). There are also rich and provocative ancient discussions of what it means to “borrow” or “adapt” writing from an adjacent (often more powerful) civilization, including a set of related narratives in eighth‐century Japanese chronicles about Korean scribes importing Sinitic writing. Such premodern sources can be profitably juxtaposed with modern discussions of colonial and ethnological encounters with literacy, such as frequently quoted and requoted stories of “natives” taken aback at the power of writing, or Claude Lévi‐Strauss's famous “Writing Lesson” (from his 1955 book Tristes Tropiques). This article considers the persistent anachronism that marks such accounts. Whether premodern or modern, it seems they inevitably become parables or allegories of the powers of writing at the time of their composition, rather than plausible reconstructions of its earliest stages. What lies behind this difficulty in writing the history of writing?
“IF THE WHOLE WORLD WERE PAPER…” A HISTORY OF WRITING IN THE NORTH INDIAN VERNACULAR
Authors: WILLIAMS TYLER 
Published: December 2018

ABSTRACTThe poetic and hagiographical works of early modern north Indian saints constitute a rich case study for understanding the relationship among changes in language, material practices of writing, and ideologies of writing. Beginning in the fourteenth century, the commitment of the vernacular language of bhāṣā to writing had the effect of reconfiguring practices and ideologies of writing, posing a serious challenge to the epistemic and cultural privilege formerly accorded to writing in the literary, intellectual, and religious traditions contained in Sanskrit, Persian, and Arabic. Although unable to completely escape the conceptual structures of a postliterate society, these supposedly illiterate, subaltern poet‐saints were able to undermine systems of religious and intellectual authority by questioning the ontological status and epistemic utility of written language and by divesting writing of its aura. They did so by emphasizing the materiality and banality of writing and by characterizing inscription as just another form of worldly labor. Such readings of the saints’ poetic works are made possible precisely by their authorial personas as subaltern, illiterate figures, and these personas are in turn established not in the poetry itself but in the hagiographical works that narrativize these saints’ lives. Importantly, these hagiographies reflect a concern with historicizing both the saints’ utterances and the material processes through which those utterances came to be written down. Perhaps paradoxically, it is this concern with historicity that enables the tradition to establish the transcendent nature of the saints’ speech and thought, and to enable those in the present to recreate the transformative speech acts that the hagiographies describe.