Results 51 to 60 of about 1,184,184 (365)

Akkermansia muciniphila and improved metabolic health during a dietary intervention in obesity: relationship with gut microbiome richness and ecology

open access: yesGut, 2015
Objective Individuals with obesity and type 2 diabetes differ from lean and healthy individuals in their abundance of certain gut microbial species and microbial gene richness.
M. Dao   +14 more
semanticscholar   +1 more source

A Perspective on Body Size and Abundance Relationships across Ecological Communities [PDF]

open access: yesBiology, 2020
Recently, several studies have reported relationships between the abundance of organisms in an ecological community and their mean body size (called cross-community scaling relationships: CCSRs) that can be described by simple power functions. A primary focus of these studies has been on the scaling exponent (slope) and whether it approximates −3/4, as
Vojsava Gjoni, Douglas Stewart Glazier
openaire   +4 more sources

Effect of forest density on richness and diversity of spring oak gallwasps (sexual generation) at oak forests in West Azarbaijan [PDF]

open access: yesمجله جنگل ایران, 2019
This research was carried out for investigating the effect of stand density on the richness and diversity of spring gallwasps species in Quercus branti stands in Sardasht forest (West Azarbaijan province).
Z Bagheri   +2 more
doaj  

Estimating population parameters of longsnout seahorses, Hippocampus reidi (Teleostei: Syngnathidae) through mark-recapture

open access: yesNeotropical Ichthyology, 2017
Estimating population parameters is essential for understanding the ecology of species, which ultimately helps to assess their conservation status. The seahorse Hippocampus reidi is directly exposed to anthropogenic threats along the Brazilian coast, but
Alexandre C. Siqueira   +4 more
doaj   +1 more source

Fractional abundance and the ecology of community structure

open access: yes, 2010
Main body of 10 pages, 3 figures; 4 supplements with 17 pages and 8 ...
Kelly, Colleen K.   +3 more
openaire   +2 more sources

The structure of ant–plant ecological networks: Is abundance enough? [PDF]

open access: yesEcology, 2014
Knowledge of the mechanisms that shape biodiversity is essential to understand the ecological and evolutionary dynamics of interacting species. Recent studies posit that most of the organization of mutualistic networks is shaped by differences in species abundance among interacting species. In this study, we examined the mutualism involving plants with
Thiago J. Izzo   +3 more
openaire   +3 more sources

Unraveling Mycobacterium tuberculosis acid resistance and pH homeostasis mechanisms

open access: yesFEBS Letters, EarlyView.
Mycobacterium tuberculosis exhibits a remarkable resilience to acid stress. In this Review, we discuss some of the molecular mechanisms and metabolic pathways used by the tubercle bacilli to adapt and resist host‐mediated acid stress. Mycobacterium tuberculosis (Mtb) is a successful pathogen that has developed a variety of strategies to survive and ...
Janïs Laudouze   +3 more
wiley   +1 more source

An Overview of Modern Applications of Negative Binomial Modelling in Ecology and Biodiversity

open access: yesDiversity, 2022
Negative binomial modelling is one of the most commonly used statistical tools for analysing count data in ecology and biodiversity research. This is not surprising given the prevalence of overdispersion (i.e., evidence that the variance is greater than ...
Jakub Stoklosa   +2 more
doaj   +1 more source

Impacts of nitrogen addition on plant species richness and abundance: A global meta‐analysis

open access: yesGlobal Ecology and Biogeography, 2018
Aim: Experimental nitrogen (N) addition (fertilization) studies are commonly used to quantify the impacts of increased N inputs on plant biodiversity. However, given that plant community responses can vary considerably among individual studies, there is ...
G. Midolo   +5 more
semanticscholar   +1 more source

The relationship between eDNA particle concentration and organism abundance in nature is strengthened by allometric scaling

open access: yesMolecular Ecology, 2020
Organism abundance is a critical parameter in ecology, but its estimation is often challenging. Approaches utilizing eDNA to indirectly estimate abundance have recently generated substantial interest.
M. Yates   +5 more
semanticscholar   +1 more source

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