Results 51 to 60 of about 229,388 (307)

Taxonomic and functional β-diversity of Collembola across elevational and seasonal gradients on a temperate mountain

open access: yesGeoderma
Understanding seasonal variations in community composition and species distribution along elevation gradients is a core task in biogeography and ecology but remains poorly studied, particularly in soil animal communities.
Zhijing Xie   +10 more
doaj   +1 more source

Human disturbance and long-term changes in fish taxonomic, functional and phylogenetic diversity in the Yellow River, China

open access: yes, 2020
Dramatic environmental changes and species invasions are increasingly threatening the diverse fish fauna of the Yellow River, China. This study examines temporal changes in the alpha and beta components of fish taxonomic, functional and phylogenetic ...
Chen, Yifeng   +7 more
core   +1 more source

Time Toxicity in Wilms Tumor: Quantifying the Burden of Healthcare Interaction in the First Year After Diagnosis

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Wilms tumor (WT) treatment imposes a significant time burden on patients and their families. Time toxicity is a patient‐centered metric that quantifies the burden of healthcare interaction. We sought to define time toxicity in the first year after diagnosis of WT and hypothesized that it would increase as tumor stage and treatment ...
Caleb Q. Ashbrook   +6 more
wiley   +1 more source

Community vertical stratification drives temporal taxonomic and phylogenetic beta diversity in a mixed broadleaf-conifer forest

open access: yesFrontiers in Ecology and Evolution, 2023
Temporal change of beta diversity provides a better understanding of the extent and consequences of species composition in forest communities with the ongoing global climate change.
Pengtao Chai   +8 more
doaj   +1 more source

Heterogeneity in the Global Practice of Central Nervous System Staging in Pediatric Acute Lymphoblastic Leukemia

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Central nervous system (CNS) involvement in childhood acute lymphoblastic leukemia (ALL) is assessed by cell counting and cytomorphology from cerebrospinal fluid (CSF) and is used for treatment stratification worldwide. The ratio of “CNS2” patients in clinical trials ranges from 3% to 40%, with unclear prognostic significance ...
Laura Almási   +14 more
wiley   +1 more source

Notes on the frugivorous fruit fly (Diptera: Tephritidae) fauna of western Africa, with description of a new Dacus species

open access: yes, 2013
The species richness of the frugivorous fruit fly fauna of western African (in particular of Ivory Coast, Ghana, Togo, Benin and Nigeria) is discussed.
White, Ian M.   +8 more
core   +1 more source

Measuring taxonomic diversity with parametric information functions [PDF]

open access: yes, 2002
This paper discusses the measurement of taxonomic diversity of a given community or set of species. First, given D, the matrix of pairwise distances between species, I propose to summarize taxonomic diversity through Rényi's information-theoretical ...
Ricotta, C., RICOTTA, Carlo
core   +1 more source

Increased Risk of Sarcomas in Children With Congenital Anomalies: Findings From the Genetic Overlap Between Anomalies and Cancer in Kids (GOBACK) Registry Linkage Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Pediatric sarcomas are a heterogeneous group of tumors that contribute disproportionately to cancer mortality in children. Although congenital anomalies are among the strongest known risk factors for childhood cancer, the risk of specific sarcoma subtypes among affected individuals has not yet been thoroughly evaluated. Procedure We
Russ Wolters   +17 more
wiley   +1 more source

Continental-scale analysis of taxonomic and functional fish diversity in the Yangtze river

open access: yesGlobal Ecology and Conservation, 2018
Effective conservation of ecosystems requires deep knowledge concerning multiple aspects of biodiversity including alpha and beta components of species richness, taxonomic, and functional diversity, as well as their relationships.
Bin Kang   +4 more
doaj   +1 more source

Exploring the link between spectral variance and upper canopy taxonomic diversity in a tropical forest: influence of spectral processing and feature selection

open access: yesRemote Sensing in Ecology and Conservation, 2023
The rapid loss of biodiversity in tropical rainforests calls for new remote sensing approaches capable of providing rapid estimates of biodiversity over large areas.
Colette Badourdine   +3 more
doaj   +1 more source

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