Results 31 to 40 of about 6,961,451 (296)

Characteristics of stray cat populations in Penza

open access: yesИзвестия высших учебных заведений. Поволжский регион: Естественные науки, 2023
Background. For the first time, the stray cats populations on the territory of Penza were studied and complex relationships of stray animals populations were shown.
Natalya F. Zolina
doaj   +1 more source

Densidade, tamanho populacional e abundância dos primatas em um fragmento de floresta atlântica em Minas Gerais, Brasil Density, population size, and abundance of primate polpulations in an atlantic forest in Minas Gerais, Brazil

open access: yesRevista Árvore, 2008
A diversidade de primatas neotropicais está representada por 128 espécies, e no Brasil 26 estão em categorias de ameaça de extinção e 24 são endêmicas. Desses primatas ameaçados, 15 espécies ocorrem na Floresta Atlântica.
Belmira Evânia Mendes Marques Santana   +4 more
doaj   +1 more source

Characteristics of the Stone Crayfish Population along a Disturbance Gradient—A Case Study of the Kustošak Stream, Croatia

open access: yesDiversity, 2023
The stone crayfish, Austropotamobius torrentium, is a native European freshwater species sensitive to habitat alterations such as stream channelization and urban development, putting its populations at risk.
Anita Tarandek   +8 more
doaj   +1 more source

Estimating population size using the network scale up method

open access: yes, 2015
We develop methods for estimating the size of hard-to-reach populations from data collected using network-based questions on standard surveys. Such data arise by asking respondents how many people they know in a specific group (e.g., people named Michael,
Baraff, Aaron J.   +3 more
core   +1 more source

Inference of historical population-size changes with allele-frequency data

open access: yes, 2020
With up to millions of nearly neutral polymorphisms now being routinely sampled in population-genomic surveys, it is possible to estimate the site-frequency spectrum of such sites with high precision.
Haubold, B.   +3 more
core   +1 more source

Testing Alternative Models To Estimate Population Size [PDF]

open access: yes, 2018
Estimating population occurs in many fields of study and professions. In order to accurately receive the closest estimate, it is important to know what model is the most accurate to use.
Marshall, Jeremy, Reynolds, Samantha
core  

A Quality Improvement Initiative to Standardize Pneumocystis jirovecii Pneumonia Prophylaxis in Pediatric Patients With Solid Tumors

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Pediatric patients with extracranial solid tumors (ST) receiving chemotherapy are at an increased risk for Pneumocystis jirovecii pneumonia (PJP). However, evidence guiding prophylaxis practices in this population is limited. A PJP‐related fatality at our institution highlighted inconsistent prescribing approaches and concerns about
Kriti Kumar   +8 more
wiley   +1 more source

Populations of long-clawed crayfish Pontastacus leptodactylus: Effect of commercial fishing on the size and age structure

open access: yesVestnik MGTU, 2023
Fishing affects the population of crayfish, while it changes the size and age characteristics. The size and age parameters of two populations of the narrow-clawed crayfish Pontastacus leptodactylus in the Loktyshi (Brest Region) and Krasnoslobodskoe ...
Alekhnovich A. V.
doaj   +1 more source

Sickle Cell Disease Is an Inherent Risk for Asthma in a Sibling Comparison Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Sickle cell disease (SCD) and asthma share a complex relationship. Although estimates vary, asthma prevalence in children with SCD is believed to be comparable to or higher than the general population. Determining whether SCD confers an increased risk for asthma remains challenging due to overlapping symptoms and the ...
Suhei C. Zuleta De Bernardis   +9 more
wiley   +1 more source

Sample genealogies and genetic variation in populations of variable size

open access: yes, 2009
We consider neutral evolution of a large population subject to changes in its population size. For a population with a time-variable carrying capacity we have computed the distributions of the total branch lengths of its sample genealogies.
Eriksson, A.   +3 more
core   +1 more source

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