Results 31 to 40 of about 226,785 (205)

Functional composition of ant assemblages in habitat islands is driven by habitat factors and landscape composition

open access: yesScientific Reports, 2021
Fragmented natural habitats within human-transformed landscapes play a key role in preserving biodiversity. Ants as keystone species are essential elements of terrestrial ecosystems; thus, it is important to understand the factors influencing their ...
Balázs Deák   +8 more
doaj   +1 more source

Ants mediate the structure of phytotelm communities in an ant-garden bromeliad [PDF]

open access: yes, 2010
The main theories explaining the biological diversity of rain forests often confer a limited understanding of the contribution of interspecific interactions to the observed patterns.
Alain Dejean   +6 more
core   +5 more sources

Promoting Search Diversity in Ant Colony Optimization with Stubborn Ants

open access: yesProcedia Computer Science, 2012
AbstractIn ant colony optimization (ACO) methods, including Ant System and MAX-M IN Ant System, each ant stochastically generates its candidate solution, in a given iteration, based on the same pheromone T and heuristic η information as every other ant.
Ashraf M. Abdelbar, Donald C. Wunsch II
openaire   +1 more source

Measuring diversity of socio-cognitively inspired ACO search [PDF]

open access: yes, 2016
In our recent research, we implemented an enhancement of Ant Colony Optimization incorporating the socio-cognitive dimension of perspective taking. Our initial results suggested that increasing the diversity of ant population - introducing different ...
Byrski, Aleksander   +7 more
core   +1 more source

Macroecology and macroevolution of the latitudinal diversity gradient in ants [PDF]

open access: yesNature Communications, 2018
AbstractThe latitudinal diversity gradient—the tendency for more species to occur toward the equator—is the dominant pattern of life on Earth, yet the mechanisms responsible for it remain largely unexplained. Recently, the analysis of global data has led to advances in understanding, but these advances have been mostly limited to vertebrates and trees ...
Evan P. Economo   +4 more
openaire   +5 more sources

Connectivity Explains Local Ant Community Structure in A Neotropical Forest Canopy: A Large‐Scale Experimental Approach [PDF]

open access: yes, 2019
Understanding how habitat structure and resource availability affect local species distributions is a key goal of community ecology. Where habitats occur as a mosaic, variation in connectivity among patches influences both local species richness and ...
Adams, Benjamin J.   +2 more
core   +2 more sources

Physical and land-cover variables influence ant functional groups and species diversity along elevational gradients [PDF]

open access: yes, 2013
Of particular importance in shaping species assemblages is the spatial heterogeneity of the environment. The aim of our study was to investigate the influence of spatial heterogeneity and environmental complexity on the distribution of ant functional ...
A Compin   +64 more
core   +2 more sources

Evolution of cuticular hydrocarbon diversity in ants [PDF]

open access: yesJournal of Evolutionary Biology, 2011
The cuticular hydrocarbons (CHCs) of ants provide important cues for nest-mate and caste recognition. There is enormous diversity in the composition of these CHCs, but the manner in which this diversity has evolved is poorly understood. We gathered data on CHC profiles for 56 ant species, relating this information to their phylogeny.
E. van WILGENBURG   +2 more
openaire   +3 more sources

Diversity, prevalence and virulence of fungal entomopathogens in colonies of the ant Formica selysi [PDF]

open access: yes, 2012
The richness of the parasitic community associated with social insect colonies has rarely been investigated. Moreover, understanding how hosts and pathogens interact in nature is important to interpret results from laboratory experiments.
Chapuisat, M, Reber, A.
core   +1 more source

Intraspecific variation in thermal acclimation and tolerance between populations of the winter ant, Prenolepis imparis. [PDF]

open access: yes, 2020
Thermal phenotypic plasticity, otherwise known as acclimation, plays an essential role in how organisms respond to short-term temperature changes.
Angilletta M. J.   +6 more
core   +1 more source

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