Results 261 to 270 of about 1,817,602 (304)

Increased anthropogenic disturbance and aridity reduce phylogenetic and functional diversity of ant communities in Caatinga dry forest.

Science of the Total Environment, 2018
Anthropogenic disturbance and climate change are major threats to biodiversity. The Brazilian Caatinga is the world's largest and most diverse type of seasonally dry tropical forest. It is also one of the most threatened, but remains poorly studied. Here,
X. Arnan, Gabriela B Arcoverde, M. Pie, J. D. Ribeiro‐Neto, I. Leal   +4 more
semanticscholar   +1 more source

Habitat diversity enhances ant diversity in a naturally heterogeneous Brazilian landscape

Biodiversity and Conservation, 2011
Understanding the factors that drive species richness and composition at multiple scales is of crucial importance for conservation. Here we evaluated how habitat heterogeneity—at the local and landscape scales—affects the diversity of ants in the Brazilian Cerrado.
Renata Pacheco, Heraldo L. Vasconcelos
openaire   +1 more source

Contrasting edge and pasture matrix effects on ant diversity from fragmented landscapes across multiple spatial scales

Landscape Ecology, 2021
C. Lasmar, A. C. Queiroz, Clarissa Rosa, N. Carvalho, F. A. Schmidt, R. Solar, L. Paolucci, R. G. Cuissi, C. Ribas   +8 more
semanticscholar   +1 more source

Sensitive Ants: Inducing Diversity in the Colony

2009
A metaheuristic called Sensitive Ant Model (SAM) for solving combinatorial optimization problems is developed. The proposed model is based on the Ant Colony System (ACS) algorithm in which agents cooperate indirectly using pheromone trails. SAM improves and extends the ACS approach by endowing each agent of the model with properties that induce ...
C. -M. Pintea, C. Chira, D. Dumitrescu
openaire   +1 more source

WESTERN FRONTIER IN BRAZILIAN ANT DIVERSITY: CONTRIBUTION OF REDE BIA TO ANT DIVERSITY KNOW IN SOUTHWESTERN AMAZON

Brazil is the country with the greatest diversity of ants. However, due to its vast size and uneven scientific development, there are still considerable areas with extensive gaps in diversity records. One of these gaps is the state of Acre, located in the southwestern Brazilian Amazon, which represents the western most frontier of Brazilian ant ...
Fernando A. Schmidt, Marília M. S. Costa, Luane K. Fontenele, Dhâmyla B. S. Dutra, Otávio G. M. Silva, Victor H. Nagatani, Esperidião A. Santos-Neto, Rodrigo M. Feitosa   +7 more
openaire   +1 more source

Ants and plants: a diversity of interactions

1991
Abstract Interactions between ants and plants are extraordinarily diverse. Ants may act on plants as herbivores, defensive agents, seed dispersers, pollinators, or providers of macronutrients (nitrogen, phosphorus, potassium). Conversely, plants may supply a range of nutrients, or nest sites, or attract ants with chemicals which are ...
openaire   +1 more source

Ant Venoms: A Study of Venom Diversity

1978
Ant venoms appear to represent an almost untapped reservoir of information capable of adding several exciting chapters to the story of toxinology. Ants share with some bees and wasps the distinction of being the only truly social group of venomous animals. This fact implies that most of the venomous individuals belong to an essentially sterile class of
openaire   +1 more source

Racial and socioeconomic disparities in lung cancer screening in the United States: A systematic review

Ca-A Cancer Journal for Clinicians, 2021
Ernesto Sosa, Dan J Raz, Virginia Chih-Yi Sun   +2 more
exaly  

Circadian Rhythms in Male Ants of Five Diverse Species

Science, 1965
When kept at constant temperature and subjected to a daily cycle of light and darkness, males of Paraponera clavata , Iridomyrmex humilis , Solenopsis saevissima , Veromessor andrei , and Camponotus clarithorax were ...
openaire   +2 more sources

Sampling and Analysis Methods for Ant Diversity Assessment

, 2020
J. Delabie, Elmo B. A. Koch, P. Dodonov, Bianca Caitano, W. DaRocha, B. Jahyny, M. Leponce, J. Majer, C. Mariano   +8 more
semanticscholar   +1 more source