Abstract:
BACKGROUND:As one of the highest forest ecosystems in the world, Polylepis forests are recognized both as center of endemism and diversity along the Andes and as an ecosystem under serious threat from habitat loss, fragmentation, and climate change due to human activities. Effective conservation efforts are limited, in part, by our poor understanding of the ecology and habitat needs of the ecosystem's flora and fauna. METHODS:In 2014-2015, we studied bird communities and 19 associated local and landscape attributes within five forested glacial valleys within the Cordillera Blanca and Huascaran National Park, Peru. We surveyed birds during the dry (May-August) and wet (January-April) seasons at 130 points distributed along an elevational gradient (3,300-4,700 m) and analyzed our data using Canonical Correspondence Analysis (CCA). RESULTS:We associated a total of 50 species of birds, including 13 species of high conservation concern, with four basic habitat types: (1) Polylepis sericea forests at low elevations, (2) P. weberbaueri forests at high elevations, (3) Puna grassland and (4) shrublands. Four species of conservation priority (e.g., Microspingus alticola) were strongly associated with large forest patches (∼10-ha) of P. sericea at lower elevations (<3,800 m), whereas another four (e.g., Anairetes alpinus) were associated with less disturbed forests of P. weberbaueri at higher elevations (>4,200 m). DISCUSSION:Results suggest two key strategies form the cornerstones of conservation efforts: (a) protect large remnant (>10-ha) P. sericea forests at lower elevations and (b) maintain all relicts of P. weberbaueri, irrespective of size, at high elevations (>4,200 m).
journal_name
PeerJjournal_title
PeerJauthors
Sevillano-Ríos CS,Rodewald ADdoi
10.7717/peerj.3220subject
Has Abstractpub_date
2017-04-27 00:00:00pages
e3220issn
2167-8359pii
3220journal_volume
5pub_type
杂志文章相关文献
PeerJ文献大全abstract::Exclosures that exclude large herbivores are effective tools for the protection and restoration of grazed plant communities. However, previous studies have shown that the installation of an exclosure does not ensure plant community recovery. Our study aimed to determine the effects of the domination of unpalatable pla...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.7833
更新日期:2019-10-01 00:00:00
abstract::Background. The age at which most young people are in tertiary education is also the age of peak onset for mental illness. Because mental health problems can have adverse effects on students' academic performance and welfare, institutions require guidance how they can best provide support. However, the scientific evid...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.43
更新日期:2013-02-26 00:00:00
abstract::Mechanical ventilation (MV) of patients can cause damage to bronchoalveolar epithelium, leading to a sterile inflammatory response, infection and in severe cases sepsis. Limited knowledge is available on the effects of MV on the innate immune defense system in the human lung. In this study, we demonstrate that cyclic ...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.1483
更新日期:2015-12-07 00:00:00
abstract::The aim of this study was the characterization of fatty acids, antioxidant activity, some physical properties, nutrient content, sugars, and minerals in the pulp and seeds of the date cultivar 'Medjool' (Phoenix dactylifera L.) grown in Mexico. The samples were obtained at maturity (Tamar) in the 2017 harvest season i...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.6821
更新日期:2019-07-17 00:00:00
abstract::Arbuscular mycorrhizal fungi (AMF) colonization, sampled at 32-50 days post-inoculation (dpi), was significantly reduced in suppressor of prosystemin-mediated responses2 (spr2) mutant tomato plants impaired in the ω-3 FATTY ACID DESATURASE7 (FAD7) gene that limits the generation of linolenic acid and, consequently, th...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.8888
更新日期:2020-04-16 00:00:00
abstract::We present a new supertree method that enables rapid estimation of a summary tree on the scale of millions of leaves. This supertree method summarizes a collection of input phylogenies and an input taxonomy. We introduce formal goals and criteria for such a supertree to satisfy in order to transparently and justifiabl...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.3058
更新日期:2017-03-01 00:00:00
abstract::Climate change will significantly affect plant distribution as well as the quality of medicinal plants. Although numerous studies have analyzed the effect of climate change on future habitats of plants through species distribution models (SDMs), few of them have incorporated the change of effective content of medicina...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.2554
更新日期:2016-10-20 00:00:00
abstract::Pueraria lobata (willd.) Ohwi is a consumable selenium-enriched plant used for medicinal purposes. The molecular response to selenium (Se) stimuli in P. lobata is currently unknown. We used RNA-Seq to identify potential genes involved in selenite metabolism and analyzed their expression profiles. We obtained a total o...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.8768
更新日期:2020-03-24 00:00:00
abstract::On the purpose of enhancing the forensic efficiency of CODIS STR loci, new STR loci have been gradually discovered and developed into some commercial multiplex systems. Recently, 22 STR loci including 18 non-CODIS STR loci and four CODIS STR loci were investigated in 501 unrelated healthy individuals of Kazakh ethnic ...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.6802
更新日期:2019-04-25 00:00:00
abstract::Engaging in effortful self-control can sometimes impair people's ability to resist subsequent temptations. Existing research has shown that when chronic dieters' self-regulatory capacity is challenged by prior exertion of effort, they demonstrate disinhibited eating and altered patterns of brain activity when exposed ...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.6550
更新日期:2019-02-28 00:00:00
abstract:Background:The need for read-based phasing arises with advances in sequencing technologies. The minimum error correction (MEC) approach is the primary trend to resolve haplotypes by reducing conflicts in a single nucleotide polymorphism-fragment matrix. However, it is frequently observed that the solution with the opti...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.5852
更新日期:2018-10-30 00:00:00
abstract::Recently, herbal drugs and their bioactive compounds have gained popularity in the management of diabetes mellitus (DM), which has become an epidemic disease all over the world and is especially prevalent in the Kingdom of Saudi Arabia (KSA). This study aimed to investigate the antidiabetic effect of ethanolic and aqu...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.6441
更新日期:2019-02-18 00:00:00
abstract::Prior work in our lab has shown that an expanding image on a computer screen elicits a hiding response in the Caribbean terrestrial hermit crab (Coenobita clypeatus). We conducted two experiments to identify what properties of the expanding stimulus contribute to its effectiveness as a visual threat. First we found th...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.4058
更新日期:2017-11-30 00:00:00
abstract::Percent of body fat and physiological stress are important correlates to wildlife demographics. We studied winter percent of body fat and physiological stress levels for a declining elk (Cervus canadensis nelsoni) population in South Dakota, 2011-2013. We obtained percent of winter body fat, pregnancy status, lactatio...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.7185
更新日期:2019-06-27 00:00:00
abstract::Barona arcuata, n.gen et n.sp., a left forewing of a relatively large cockroach of the Order Blattaria, is described from mesosaur-bearing lagoonal shales of the Mangrullo Formation (north-eastern Uruguay). While most of the insect remains recovered from the Mangrullo Formation come from sandy limestones, associated t...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.6289
更新日期:2019-01-18 00:00:00
abstract:BACKGROUND:Preterm birth is a main determinant of neonatal mortality and morbidity and a major contributor to the overall mortality and burden of disease. However, research of the preterm birth is hindered by the imprecise definition of the clinical phenotype and complexity of the molecular phenotype due to multiple pr...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.3685
更新日期:2017-09-01 00:00:00
abstract::Liver fibrosis often appears in chronic liver disease, with extracellular matrix (ECM) deposition as the main feature. Due to the presence of the liver-gut axis, the destruction of intestinal homeostasis is often accompanied by the development of liver fibrosis. The inconsistent ecological environment of different int...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.9050
更新日期:2020-04-24 00:00:00
abstract::We explored the genetic background of social interactions in two breeding metapopulations of the pied flycatcher (Ficedula hypoleuca) in Western Siberia. In 2005, we sampled blood from birds breeding in study areas located in the city of Tomsk and in a natural forest 13 km southward of Tomsk (Western Siberia, Russia)....
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.6059
更新日期:2018-12-06 00:00:00
abstract:Background:Immunoglobulin superfamily member 10 (IGSF10) is a member of the immunoglobulin superfamily that is expressed at high levels in both the gallbladder and ovary. Currently, the role and possible mechanism of IGSF10 in breast cancer remain unclear. Method:By applying real-time quantitative polymerase chain rea...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.10128
更新日期:2020-10-21 00:00:00
abstract:Background:Selective serotonin reuptake inhibitors (SSRIs) are among the most widely prescribed class of drugs in the practice of psychiatry. Cytochrome P450 (CYP) 2C19 and CYP2D6 are established as clinically relevant drug metabolizing enzymes (DMEs) that influence the pharmacokinetics of SSRIs and may either be group...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.7860
更新日期:2019-10-09 00:00:00
abstract::Individual movement influences the spatial and social structuring of a population. Animals regularly use the same paths to move efficiently to familiar places, or to patrol and mark home ranges. We found that Australian sleepy lizards (Tiliqua rugosa), a monogamous species with stable pair-bonds, repeatedly used the s...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.1844
更新日期:2016-03-22 00:00:00
abstract::Parallelism is important because it reveals how inherently stochastic adaptation is. Even as we come to better understand evolutionary forces, stochasticity limits how well we can predict evolutionary outcomes. Here we sought to quantify parallelism and some of its underlying causes by adapting a bacteriophage (ID11) ...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.2227
更新日期:2016-07-19 00:00:00
abstract::In agricultural landscape, there are thousands of young wild animals killed every year. Their deaths are caused mostly by agricultural fieldworks during spring harvest. Among the affected animals there are also fawns of roe deer (Capreolus capreolus), which react to danger by pressing themselves against the ground in ...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.6923
更新日期:2019-05-10 00:00:00
abstract::Background. Many Long-Term Care (LTC) institutionalized patients are the most frail and functionally dependent among the geriatric population and have significant oral health disparities.They often suffer from dental neglect due to limited access to appropriate professional dental care. These patients have chronic hea...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.423
更新日期:2014-06-10 00:00:00
abstract::Metoposaurids are representatives of the extinct amphibian clade Temnospondyli, found on almost every continent exclusively in the Late Triassic deposits. Osteohistologically, it is one of the best-known temnospondyl groups, analyzed with a wide spectrum of methods, such as morphology, morphometry, bone histology or c...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.9868
更新日期:2020-09-08 00:00:00
abstract:Background:Over the last two decades, there has been a constant increase in prescription rates of antidepressants. In parallel, neuroactive pharmaceuticals are making their way into aquatic environments at increasing concentrations. Among the antidepressants detected in the environment citalopram, a selective serotonin...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.8765
更新日期:2020-03-12 00:00:00
abstract::Melanoma is a global concern and accounts for the major mortality of skin cancers. Herpes simplex virus thymidine kinase gene with ganciclovir (HSV-TK/GCV) is a promising gene therapy for melanoma. Despite its low efficiency, it is well known for its bystander effect which is mainly mediated by gap junction. In this s...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.7760
更新日期:2019-09-20 00:00:00
abstract:Background:Overweight (OW) is considered a risk for various metabolic diseases. However, its effects as a mechanism that alters the metabolite profiles remain unclear. The purpose of this study is to investigate the effects that OW has on the lipid and metabolite profiles in young adults. Methods:The serum metabolite ...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.7137
更新日期:2019-06-20 00:00:00
abstract::Genome sequencing is rapidly being adopted in reference labs and hospitals for bacterial outbreak investigation and diagnostics where time is critical. Seven gene multi-locus sequence typing is a standard tool for broadly classifying samples into sequence types (STs), allowing, in many cases, to rule a sample out of a...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.5233
更新日期:2018-07-31 00:00:00
abstract::Soil microbial communities are continuously exposed to H2 diffusing into the soil from the atmosphere. N2-fixing nodules represent a peculiar microniche in soil where H2 can reach concentrations up to 20,000 fold higher than in the global atmosphere (0.530 ppmv). In this study, we investigated the impact of H2 exposur...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.1782
更新日期:2016-03-10 00:00:00