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Trends and Shifts in Mean Annual Inflow Time Series of Hydropower Plants in Brazil
J. M. Damazio
Marco Santos

J. M. Damazio

and 2 more

September 05, 2024
Previous hydrological trends and shifts studies carried out in Brazil used a set of stream flow records that did not covered the important critical hydrological period for Brazil-ian hydropower production occurred between 2015 and 2022. This extreme dry period has raised many substantial concerns about if it could be attributed to cyclical climate variabilities or to human induced variations. In this paper, we provide an update of trends or shifts detection studies in long-term mean annual flow (LTMAF) using a set of 52 naturalized historical time series of monthly inflows until 2022 for Brazilian hydropower plants. Another novelty of this work is the attempt to avoid errors in approximating hydrographic reconstructions of natural inflows, considering time series of inflows from hydroelectric plants located in areas with unregulated headwaters. This paper also stands out from the others by avoiding inflow data obtained using time series extensions techniques of past periods with scarcity of fluviometric records in the hydrographic region. Detection tests for assessing statistical significance of linear trends and of gradual/abrupt shifts were applied for each of the 52 selected time series. Trends and/or shifts were detected in 37 series. The results were compared with other studies that used all naturalized time series from the ONS archive.
Creation of Gas-phase Organo-Uranium Species by Removal of “yl” Oxo Ligands from UO22...
Samuel J. Lenze
Justin Terhorst

Samuel J. Lenze

and 4 more

September 05, 2024
Rationale: These experiments were conducted to measure the diversity of organo-U(IV) and U(III) ions created using multidimensional tandem MS and collision-induced dissociation of halogen-substituted U VIO 2-phenide complexes [UO 2(C 6H 3FX)] +, X = Cl, Br, or I. Methods: Samples of UO 2(O 2C-C 6H 3FX) 2 were prepared by digesting UO 3 with appropriate halogen-substituted carboxylic acids in deionized water. Solutions for ESI were created by diluting the digested sample in 50:50 H 2O/CH 3OH. Precursor ions for multiple-stage tandem MS were generated by electrospray ionization (ESI). Multiple-stage collision-induced dissociation (He collision gas) in a linear quadrupole ion trap mass spectrometer was used to prepare species such as [U IVFX(C≡CH)] + and U IIIF(C≡CH)] + for subsequent study of ion-molecule reactions with adventitious neutrals in the ion trap. Results: Multiple-stage CID of the [UO 2(C 6H 3FX)] +, X= Cl, Br, or I, complexes caused removal of both “yl” oxo ligands from of the UO 2 2+ moiety to create ions such as [U IVFX(C≡CH)] + and [U IIIFX] +. For [U IVFXC≡CH] + and [U IIIFC≡CH] + products, hydrolysis to generate [U IVFX(OH)] + and [U IIIF(OH)] +, with concomitant loss of HC≡CH, was observed. When X = Cl and Br, elimination of HX was competitive with loss of HC≡CH. CID of [UO 2(C 6H 3FBr)] + and [UO 2(C 6H 3FI)] + caused reductive elimination of the respective halogen radicals to generate interesting organo-U(III) species such as [U IIIF(C≡CH)] + and [U IIIC 2] +. Conclusions: The use of “preparative” tandem mass spectrometry and a suite of halogen substituted benzoic acid ligands can be used to remove both oxo ligands of UO 2 2+ and generate a group of homologous organo-U(IV) and organo-U(III) ions for studies of intrinsic reactivity.
The effects that the capitalists' unproductive expenditures have on investments and t...
.

.

September 05, 2024
This paper examines the consequences of the exponentially increasing unproductive expenditures of capitalists in the form of land and financial assets. For the purpose of doing that, the mathematical model of capital accumulation provided in the paper "Mathematical model for the economic dynamics and periodic crisis described by Karl Marx" [1] is used. After formulating everything in mathematical terms, a simulation based on them is to be ran. Afterwards, real world data is used for the validation of the hypothesis.
Genomic and epidemiological surveillance of SARS-COV-2 variants during the pre-mass v...
Felipe Costa
Patricia Akemi Assato

Felipe Allan da Silva da Costa

and 11 more

September 05, 2024
The SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus 2) has caused an unprecedented pandemic in human history. To date, more than 6.5 million lives have been lost to COVID-19 (coronavirus disease 2019). Following widespread efforts for COVID-19 vaccination in Brazil, there has been a drastic reduction in COVID-19 deaths, which was particularly evident in the city of Botucatu, SP, Brazil, after a campaign to a mass vaccination. Our objective was to assess the temporal and epidemiological spread of Variants of Concern (VOC) of SARS-CoV-2 in the four weeks preceding the massive vaccination campaign in the municipality. After randomizing 400 samples, Next-Generation Sequencing was used to produce sequences and determine the variants. Among high-quality sequences, 98.4% belonged to the VOC Gamma, with P.1 and P.1.14 being the most prevalent lineages. P.1 was more frequent in both men and women, and in younger individuals and adults (0-59 years) compared to P.1.14. There was no correlation between the variants and the presence of comorbidities or between them and moderate to severe clinical cases of COVID-19 or death. However, P.1 was more frequent than P.1.14 in people with mild forms of the disease and in those who exhibited symptoms. In the phylogenetic analyses, a small cluster of 9 P.1.14 samples containing mutations in ORF1a: M584V and A3620V was observed, which had not been found in any Gamma sequences to date. The importance of genomic surveillance of SARS-CoV-2 is evident in assisting public health decision-making and the management of COVID-19 and other diseases.
INFLUENCE ON THE LIPASE CONCENTRATION AND SUBSTRATE ON THE LIPID PROFILE AND SENSORY...
Ignacio Vieitez
Marcelo Miraballes

Ignacio Vieitez

and 9 more

September 05, 2024
Enzymatically modified cheeses (EMC) aim to achieve, in a shorter time frame, a composition and sensory characteristics akin to those of aged cheese. This study analyzed the lipid profile, composition, free fatty acid (FFA) content, and sensory attributes of EMC pastes with the objective of emulating the flavor profile of a red smear-ripened cheese (SR). Two different smear ripened cheeses were utilized as references: SR1, aged for 2–3 months, and SR2 aged for 10 months. Twelve formulations of EMC were prepared using a fatty medium moisture cheese corresponding to Mercosur’s Danbo type cheese (MD) as sole base, with the addition of the two types of SR cheeses and enzymes including exopeptidase, endopeptidase, and lipase, with varying concentrations of the latter. The EMC formulations exhibited a different physicochemical composition compared to the SR cheeses, with higher moisture, ash content, lower fat, and protein content. The highest total FFA contents were found in formulations with SR2, followed by formulations with SR1. As the concentration of lipase increased in the formulations, a greater degree of lipolysis was observed. Sensory profile was not influenced by the concentration of lipase, but rather depended on the type of cheese used as the base. All samples prepared with SR1 besides those prepared with SR2 as the base cheese and the highest concentration of lipase, exhibited sensory profiles more closely resembling that of lightly aged SR1. The enzymatic modification of cheeses proved to be a useful tool for generating sensory profiles similar to slightly aged SR cheese.
Risk factors for viral coinfections in blood donors in a retrospective cohort in Bahi...
Estela Luz
Marinho Marques da Silva Neto

Estela Luz

and 8 more

September 05, 2024
Background: Human Immunodeficiency Virus (HIV), Human T Lymphotropic Virus (HTLV), Hepatitis B Virus (HBV) and Hepatitis C Virus (HCV) coinfection may lead to disease progression or worsen its clinical presentation. Viral coinfections screening during blood donation is critical. Methods: To identify risk factors for coinfection among blood donors, we assessed the blood donations at the Fundação de Hematologia e Hemoterapia da Bahia, from 2008 – 2017. We compared single infection versus coinfection, defined as individuals with two or more blood-borne viruses. A multivariable logistic regression model was performed to evaluate independent associations between characteristics of donors with single infection and multiple infection using “non-infection” category as reference. Results: Among 777,446 collected blood donations, 27,458 (3.5%) were reactive, most (n=26,677, 97.6%) for a single infection and 681 (2.4%) for coinfection. The most frequent coinfections were HBV-HIV (30.6%), HBV-HCV (30.4%), and HBV-HTLV (24.4%). Male sex, lower education, being single, and being a first-time donor were independently associated with both single and coinfection. Nevertheless, the adjusted odds for risk factors of coinfection were notably higher than for single infection. Conclusions: Single and coinfection shared identical risks, but they were significantly higher for coinfection. Preventive strategies addressing the identified risks can decrease transmission of blood-borne viruses via blood transfusion.
Multidisciplinary management of persistent biliary leak post empyema gallbladder
Rishab Martins
Milly Tadigiri

Rishab Martins

and 6 more

September 05, 2024
Multidisciplinary management of persistent biliary leak post empyema gallbladder
A Model for an Academia-Industry Collaboration for Pharmacovigilance and Pharmacoepid...
Alfred Neugut
Vinu George

Alfred Neugut

and 8 more

September 05, 2024
Purpose We describe a novel model for collaboration between academia and the pharmaceutical industry, focused on post-marketing pharmacovigilance. Methods Otsuka Pharmaceutical, a global Japan-based pharmaceutical company, and Columbia University, a major university, have established a collaboration dedicated to working together in pharmacoepidemiology and post-marketing pharmacovigilance. An oversight committee, made up of individuals from each institution, meets on a regular basis to set policy and provide oversight. Results The primary aim of this novel academia-industry collaboration is to provide expert research guidance for the industry pharmacovigilance group on questions involving pharmacoepidemiology. University epidemiologists may also be consulted by other divisions of industry, such as the clinical trials group. The first aim of the collaboration is to provide epidemiologic input to industry by determining the incidence, prevalence, and outcomes of diseases; drafting the epidemiology components of risk management plans for drugs; and planning retrospective database analyses. A second major aim is to provide educational services to industry by conducting workshops on basic epidemiology and biostatistics; leading a monthly lecture/journal club series; hosting seminars on medical topics; and providing a writing workshop to assist in preparing abstracts and papers for presentation and publication. University epidemiologists provide oversight/evaluation through quarterly presentations and updates to the industry partner’s external advisory committee as well as to University leadership. Conclusions This unique academia-pharmaceutical industry collaboration enhances understanding of the medical and epidemiologic challenges faced within a pharmacovigilance department of a global pharmaceutical company. We offer it as a model for others performing mandatory regulatory post-marketing pharmacovigilance activities.
Precipitation intensification, de-intensification and disaster risk in Eastern Himala...
Manish Kumar

Manish Kumar

and 3 more

September 11, 2024
A document by Manish Kumar. Click on the document to view its contents.
Co-existence of langerhans cell histiocytosis and moyamoya disease: a case report
Guan  Jiang
Jingxi Zhang

Guan Jiang

and 2 more

September 05, 2024
Title: Co-existence of langerhans cell histiocytosis and moyamoya disease: a case report
Water molecule under the influence of electric field and plant growth
Alireza Gooneh
Ali Amerimehr

Alireza Gooneh

and 2 more

September 05, 2024
The aim of this study is to optimize plant growth using an electric field. To achieve this goal, we investigated the factors influencing infant and plant development and introduced growth time constants. Subsequently, employing circuit modeling, we established the relationship between different growth time constants. Furthermore, we derived the theoretical relationship between plant stem length growth over time. In this paper, we optimized plant growth by applying an electric field and demonstrated that applying a specific amount of electric field to water molecule increases its aerodynamics, consequently reducing its friction during movement within the plant stem. This reduction in friction enhances permeability in the plant. Finally, considering the effect of the applied electric field on water molecule and the growth time constant of the plant, we obtained the relationship between the growth time constant of the plant and the applied electric field on water molecule. Ultimately, we concluded that the plant exposed to the electric field reaches the desired growth in a shorter period of time.
Technical Language Processing for Telecommunications Specifications
Felipe A. Rodriguez Y.

Felipe A. Rodriguez Y.

September 05, 2024
Large Language Models (LLMs) are continuously being applied in a more diverse set of con‐ texts. At their current state, however, even state‐of‐the‐art LLMs such as Generative Pre‐Trained Transformer 4 (GTP‐4) have challenges when extracting information from real‐world technical docu‐ mentation without a heavy preprocessing. One such area with real‐world technical documentation is telecommunications engineering, which could greatly benefit from domain‐specific LLMs. The unique format and overall structure of telecommunications internal specifications differs greatly from standard English and thus it is evident that the application of out‐of‐the‐box Natural Language Processing (NLP) tools is not a viable option. This article provides a brief outline of the limitations of out‐of‐the‐box NLP tools for processing technical information generated by telecommunications experts and expand the concept of Technical Language Processing (TLP) to the telecommunica‐ tions domain. Additionally, we emphasize the importance of use case definition by introducing the required information mapping from the perspective of a Q&A application that uses internal speci‐ fications as the source of knowledge. Finally, we recommend actions to mitigate the effect of the internal specifications format on information extraction, effectively achieving LLM‐friendly inter‐ nal specifications.
Identifying the causes of chronic unilateral nasal discharge in the horse
Paddy Dixon

Paddy Dixon

September 05, 2024
This article briefly reviews the causes of unilateral nasal discharge associated with sinonasal disease in the horse. Whilst, computed tomographic and radiographic imaging are often of great diagnostic value, clinical and nasal endoscopic examinations are the initial steps in investigating these disorders. This article reviews the use of oral examination and nasal endoscopy in the investigation of nasal discharge caused by sinonasal disease.
Rare cases of neonatal thrombosis - case series
Ramesh Khadayat
Prenana  Kansakar

Ramesh Khadayat

and 6 more

September 05, 2024
Rare cases of neonatal thrombosis - case seriesRamesh Khadayat1, Prerana Kansakar1, Sailesh Shrestha1, Shreya Thapa1, Tilak Gautam1, Ramesh Basnet1, Sagar Rana Magar11. Patan Hospital, Patan Academy of Health Science, Lalitpur, Nepal*Corresponding author:-Ramesh KhadayatPatan Hospital, Patan Academy of Health Science, Lalitpur, NepalEmail:- rameshkhadayat123@gmail.com
Acute Appendicitis: A Literature Inconsistent Presentation of The Great Abdominal Mas...
Mohammad Hasani
Hessameddin Babaei

Mohammad Hasani

and 2 more

September 05, 2024
1 Medical Intern, Faculty of Medicine, School of Medicine, Shahrood Branch, Islamic Azad University, Shahrood, Semnan, Iran a Emial Address: the-dr-lazy@pm.me2 Student Research Committee, Shahrood Branch, Islamic Azad University, Shahrood, Iran b Email Address: Hessamedin.b@gmail.com3 Student Research Committee, Shahrood Branch, Islamic Azad University, Shahrood, Iran c Email Address: mr.a.armin@gmail.comCorresponding: Hessamedin Babaei Email: hessamedin.b@gmail.comKey Clinical MassageAcute appendicitis remains one of the most frequent cause of emergent abdominal operations, diagnosed by combination of history, examination, and investigations to build a full clinical picture. The 63-year-old female presented in this case has had right lower quadrant abdominal pain for 10 days before the presentation. Her history, examination, and laboratory results didn’t support a diagnosis of acute appendicitis. Ultrasonography identified acute perforated appendicitis with minimal fluid collection, which led to her hospital admission. Subsequent laboratory investigations became consistent over time and patient prepared for the appendectomy. This case focuses on a rare presentation of a common disease. It seeks to point out the significance of using para-clinical tests judiciously in conjunction with clinical findings.Keywords: Appendicitis,INTRODUCTIONAcute appendicitis remains one of the most frequent cause of emergent abdominal operations with a lifetime risk of 8.6% in males and 6.7% in females1,2. Although in most cases this is an easily reached diagnosis, presentation is not always typical and there are certain other conditions which may mimic appendicitis. In fact the classical presentations only occur in 50% of cases2. Anatomical variations of the appendix and timing of presentation can make the clinical picture more cumbersome3. While there may be instances where operating on a patient without prior imaging examination is deemed appropriate, this should be regarded as an exception rather than a rule. The liberal utilization of imaging techniques to enhance preoperative diagnostic accuracy and minimize the incidence of negative appendectomy is an ongoing trend that is expected to persist4,5. The goal of treatment is preventing the condition to reach its potentially serious complications, including perforated and gangrenous appendicitis, abscess formation, intestinal obstruction, septic seeding of mesenteric vessels6.
Investigation on Enzymatic Hydrolysis of Earthworm Proteins and Evaluation of Its Ant...
Zhonghui Liu
Jie Shi

Zhonghui Liu

and 4 more

August 27, 2024
Earthworms, regarded as a valuable resource, are rich in proteins (up to 70%) and have huge potential to produce high-value products. This study selected five proteases to enzymatically hydrolyze earthworms, and key factors including the enzyme dosage, hydrolysis temperature and time were optimized. The extracted earthworm-derived peptides with different molecular weights were purified and separated using membrane separation method, and their antioxidant properties were evaluated through DPPH and ABTS assay. The results showed that alcalase protease, trypsin and papain could achieve good hydrolysis degrees with a peptide yield of up to 22.6%. The majority of the earthworm-derived peptides had molecular weights less than 3 kDa (97.67%), with over half having molecular weights smaller than 1 kDa (55%). The overall amount of amino acids was found to be 676.60 mg/g, with a contribution of 24.6% from amino acids known for their strong antioxidant properties. Following the identification of peptide sequences, a total of 548 peptides were recognized, with short peptides containing 3-7 amino acids representing 64% of the total. This work aims to contribute towards the future utilization of earthworm bioactive peptides in food, cosmetic and pharmaceutical industries.
The movement pattern of Père David’s deer (Elaphurus davidianus) relative to habitat...
Baodong Yuan
bin xie

Baodong Yuan

and 2 more

September 05, 2024
Speed and distance traveled provide quantifiable links between behavior and energetic, and are one of the most routinely estimated indicators from animal tracking data. From Oct 2016 to Sep 2017, we equipped 12 Père David’s deer (Elaphurus davidianus) with GPS telemetry collars and studied their space use, and our goal was to quantify the extent and consistency of habitat attendance by individuals and assess the influence of habitat use on seasonal and annual travell distances. Our results demonstrated that male deer’s annual home ranges were all smaller than that of female in four gradient and male deer’s seasonally movement speed were all slower than female. The tracked Père David’s deer lived at low elevation and covered mean daily distances (net displacements) ranged from-10.2 to 37 m. The seasonally vegetation coverage change and water level line were the main factors that drive Père David’s deer to move towards different habitat. The rhythmic reproduction of male Père David’s deer affect its monthly movement, especially in June. The timid and shy characteristics of female Père David’s deer determined them move further and stayed at lower elevation in whole seasons. Differences in home range size and speed between sexes suggest that there might be a trade-off between foraging and reproductive strategies. Moreover, in the view of evolution, the behavior plasticity, self-regulation and adaptation ability to native habitat ensuring Père David’s deer population number sustainable growth. When evaluating the movement of large mammals, it is particularly important to take into account these sexual, seasonal, and annual differences, if predictive surfaces are to be used to identify protected and managed areas.
Management of Single Tooth Replacement in the Esthetic Region Using Immediate Implant...
MANISH RATHI

MANISH RATHI

September 05, 2024
Objective: This case report aims to illustrate the management of single tooth replacement in the esthetic region using immediate implant placement, highlighting the importance of interdisciplinary treatment planning and adherence to esthetic principles. Clinical Considerations: A 37-year-old female presented with a fractured upper front tooth, necessitating immediate attention to restore esthetic
Central hemangioma of mandible: Rare case
Rakshya Shrestha
Reena Shrestha

Rakshya Shrestha

and 4 more

September 05, 2024
Central hemangioma of mandible: Rare case
Branched Polyethylenimine Exposure Changes Phenotypes in Methicillin-Resistant Staphy...
Chase C. Roedl
Andrew Boris

Chase C. Roedl

and 4 more

August 24, 2024
Branched polyethylenimine (BPEI) has antibacterial and antibiofilm properties. The utility of this broad-spectrum agent could be hampered if resistance to BPEI develops in bacterial pathogens. In contrast to the paradigm of drug resistance hindering drug development, the emergence of BPEI resistance in Staphylococcus aureus is accompanied by changes in the S. aureus phenotypes that increase susceptibility to β-lactam antibiotics and phagocytic killing. Exposure to BPEI through serial passage leads to resistance in methicillin-resistant Staphylococcus aureus (MRSA). The minimum inhibitory concentration (MIC) of 600 Da BPEI in the wild-type USA300 MRSA strain is 16 µg/ml while, after 15 serial passages, the MIC increased to 1024 µg/mL. An additional 15 rounds of serial passage in the absence of BPEI did not change the 1024 µg/mL MIC. The resistant MRSA strains show an 8-fold increased susceptibility to oxacillin antibiotic, has a reduced export of acid species and staphyloxanthin pigment, and renders MRSA more susceptible to phagocytic killing by THP-1 monocytes. Whole genome screening data revealed a missense mutation in the vraG gene for both the BPEI resistant USA300 and MW2 strains. This gene is involved with efflux pumps expression and recognition of cationic antimicrobial peptides; thus an altered gene produce may alter export phenotypes and the binding of cationic BPEI to the bacterial cell envelope in line with observations reported in this work.
Psychological Factors in Communication: Insights into Interpersonal Dynamics and Deci...
Wanran  Guo
Cheng Chen

Wanran Guo

and 1 more

September 05, 2024
This study examines the complex relationship between psychology and communication using a quantitative approach. Data was collected from 535 participants, including psycholinguists, linguists, psychologists, and researchers, through online questionnaires via Google Forms. Employing purposive sampling, participants with relevant expertise were targeted. SPSS was used for data analysis, and Structural Equation Modelling (SEM) tested the validity of hypotheses. The study identifies several key correlations: higher emotional intelligence is linked to more effective communication skills; self-efficacy correlates positively with assertive communication behaviors; communication apprehension negatively affects interpersonal communication quality; higher empathy leads to more empathetic interactions; and social influence significantly impacts group communication dynamics and decision-making. These findings offer valuable insights into the interplay between psychological factors and communication processes, highlighting their importance in improving interpersonal interactions. The study contributes to the understanding of how psychological factors shape communication behaviors, providing practical implications for enhancing communication in various contexts.
Time-varying compartmental models capture hours-scale variation in the elimination ki...
Matthew McDonough
Julian Gerson

Matthew McDonough

and 4 more

September 05, 2024
Background and Purpose: Pharmacokinetics have traditionally been assessed using concentration measurements from methods with low temporal resolution, such as blood draws, leading to profiles being estimated from sparse or blended data. Recent advances in in vivo sensors, however, now enable the collection of hundreds of observations over a few-hours for each individual drug administration. Previous analyses of such data for the antibiotic tobramycin have identified significant (several-fold), hours-scale changes in the efficiency with which this renally cleared drug is eliminated. Here we apply similar analyses to study the pharmacokinetics of another renally cleared drug, the antibiotic vancomycin. Experimental Approach: We estimate vancomycin pharmacokinetic profiles using previously collected time-dense plasma concentration measurements within six anesthetized rats. Specifically, we fit standard one- and two-compartment models, as well as time-varying one-compartment models (in which the proportionality relating concentration to elimination rate is time-varying), to these data to investigate if the time-varying models are statistically preferred for describing individual-level vancomycin pharmacokinetics, over standard one- and two-compartment models. Key Results: One-compartment models incorporating time-varying elimination proportionalities are statistically preferred over standard one- and two- compartment models for 5 of our 6 vancomycin time courses. When the initial impact of the distribution phase is removed from these data, a reciprocally time-varying one-compartment model is preferred over the standard-one compartment model in 4 of 5 considered datasets. Conclusion and Implications: These results provide further animal-model evidence that the pharmacokinetics of renally cleared drugs can vary significantly over timescales as short as a few hours.
Comparison of Species Composition and Climate Drivers in High-Latitude Alpine Ecosyst...
Prakash Bhattarai
Sagar Budhathoki

Prakash Bhattarai

and 1 more

September 05, 2024
This study aims to explore the species composition and climatic drivers of two distinct alpine ecosystems: the High-Latitude Alpine Ecosystems (HLAE) of Hardangervidda National Park, Norway, and the High-Altitude Alpine Ecosystems (HAAE) of the Tibetan Plateau. These ecosystems have variations in environmental factors like solar radiation and topography, but they are characterized by low temperatures, precipitation, and sensitivity to climate change. Data were collected from 40 plots of 100 square meters in each ecosystem, and Non-metric Multidimensional Scaling (NMDS) and Canonical Correspondence Analysis (CCA) were employed to assess species composition and identify key climatic factors influencing these patterns. The results revealed notable differences between the species found in HLAE and those in HAAE. HLAE species were found to be more temperature-sensitive, while HAAE species were found to be more responsive to precipitation. Specifically, Growing Season Length (GSL) and Annual Precipitation (AP) were critical for species composition in HAAE, whereas Mean Temperature of the Warmest Quarter (MTWQ) and Mean Annual Temperature (MAT) were more influential in HLAE. The specific ecological responses of these systems to climate change are discussed, and the study highlights the significance of considering both climatic and non-climatic aspects in understanding species composition in alpine ecosystems.
Phylogeny, diversification and biogeography of Garra (Cypriniformes: Cyprinidae) reve...
Zhi-Bang Wang
Thaung Naing Oo

Zhi-Bang Wang

and 3 more

September 05, 2024
Garra is a kind of small- to medium-sized fish that is widely distributed from southern Eurasia to central Africa. As one of the most diverse genera of Cyprinidae, investigating the phylogeny and biogeography of Garra remains challenging. In this study, we combined sequences of Garra samples collected from Myanmar with sequences downloaded from GenBank to investigate the phylogeny, diversification, and biogeography of Garra on a global scale, with an emphasis on Southeast Asia. Species delimitation results indicated that there are at least 22 potential species, including eight undescribed species in Myanmar, suggesting that the diversity of Garra in this region have been largely underestimated. Diversification analysis suggested a relatively high diversification rate in the early branches of Garra. Ancestral distribution reconstruction results revealed that Garra originated from the Southeast Asia in the late Eocene, approximately 34 million years ago, with subsequent dispersals across different drainages influenced by the uplift of the Qinghai-Tibet Plateau. Our study provided a new insight into the evolutionary history of Garra and the basis for further research on this genus.
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