Results 51 to 60 of about 358,830 (316)

MODELLING THE POTENTIAL DISTRIBUTION AND RICHNESS OF CETACEANS IN THE AZORES FROM FISHERIES OBSERVER PROGRAM DATA

open access: yesFrontiers in Marine Science, 2016
Marine spatial planning and ecological research call for high-resolution species distribution data. However, those data are still not available for most marine large vertebrates. The dynamic nature of oceanographic processes and the wide-ranging behavior
Marta Tobeña   +7 more
doaj   +1 more source

An integrated approach for the measurement of inequality, poverty, and richness [PDF]

open access: yesPanoeconomicus, 2015
The goal of the paper is to propose a new and integrated approach to the measurement of inequality in income distribution, poverty, and richness. The proposed set of indicators is easy to calculate and is based on a neutral inequality concept ...
Crespo Nuno   +2 more
doaj   +1 more source

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

open access: yesFEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley   +1 more source

Influences of horizontal and vertical aspects of land cover and their interactions with regional factors on patterns of avian species-richness

open access: yes, 2018
We examined how both horizontal and vertical aspects of land-cover diversity influence patterns of avian species-richness across North America. Using count data from Breeding Bird Survey routes within the conterminous USA and land-cover data from the ...
John B. Dunning Jr. (3811522)   +2 more
core   +1 more source

A meta-analysis of fauna and flora species richness and abundance in plantations and pasture lands [PDF]

open access: yes, 2010
We conducted a systematic global review of differences between timber plantations and pasture lands in terms of animal and plant species richness and abundance, and assessed the results using meta-analysis techniques.
Zammit, Charlie   +4 more
core   +1 more source

Seasonal variation in the leaf-litter frog community (Amphibia: Anura) from an Atlantic Forest Area in the Salto Morato Natural Reserve, southern Brazil

open access: yesZoologia (Curitiba), 2011
In this study we provide the first data regarding community parameters of leaf-litter anurans inhabiting a forest floor in the state of Paraná, southern Brazil, including information on community species richness, composition, specific density and ...
Manuela Santos-Pereira   +5 more
doaj   +1 more source

Portfolios of the Rich [PDF]

open access: yes, 2000
Recent research has shown that rich' households save at much higher rates than others (see Carroll (2000); Dynan, Skinner, and Zeldes (1996); Gentry and Hubbard (1998); Huggett (1996); Quadrini (1999)). This paper documents another large difference between the rich and the rest of the population: portfolios of the rich are heavily skewed toward risky ...
openaire   +3 more sources

pH‐mediated activation of the lysosomal arginine sensor SLC38A9

open access: yesFEBS Letters, EarlyView.
Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley   +1 more source

The snake assemblage (Squamata: Serpentes) of a Cerrado-Caatinga transition area in Castelo do Piauí, state of Piauí, Brazil

open access: yesZoologia (Curitiba), 2011
This study records and analyzes the diversity and structure of a snake assemblage in a transition area between Cerrado and Caatinga, in the municipality of Castelo do Piauí, state of Piauí, comparing the distribution and similarity of the species ...
Francílio da Silva Rodrigues   +1 more
doaj   +1 more source

Effect of physiographical factors on tree species diversity (case study: Kandelat Forest Park) [PDF]

open access: yesتحقیقات جنگل و صنوبر ایران, 2013
In order to identify the diversity of tree species in relation to physiographic factors (elevation, aspect and slope), the Kandelat Forest Park with an area of 614.85 hectare was surveyed, where is located southeast of Rasht city.
Hasan Pourbabaei, Tahereh Haghgooy
doaj   +1 more source

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