159 Works

Data from: Land use alters trophic redundancy and resource flow through stream food webs

Elliott L. Price, Mirela Sertić Perić, Romero Q. Gustavo & Pavel Kratina
1. The changes to physical and chemical ecosystem characteristics as a response to pervasive and intensifying land use have the potential to alter the consumer-resource interactions and to rewire the flow of energy through entire food webs. 2. We investigated these structural and functional properties of food webs in stream ecosystems distributed across woodland, agricultural and urban areas in the Zagreb region of Croatia. We compared resource availability and consumer diet composition using stable isotope...

Data from: Network analyses support the role of prey preferences in shaping resource use patterns within five animal populations

Paula Lemos-Costa, Mathias M. Pires, Márcio S. Araújo, Marcus A. M. De Aguiar &
Individual variation is an inherent aspect of animal populations and understanding the mechanisms shaping resource use patterns within populations is crucial to comprehend how individuals partition resources. Theory predicts that differences in prey preferences among consumers and/or differences in the likelihood of adding new resources to their diets are key mechanisms underlying intrapopulation variation in resource use. We developed network models based on optimal diet theory that simulate how individuals consume resources under varying scenarios...

Data from: Contrasting plant water-use responses to groundwater depth in coastal dune ecosystems

Cristina Antunes, Mari Cruz Díaz Barradas, María Zunzunegui, Simone Vieira, Ângela Pereira, Andreia Anjos, Otília Correia, Maria João Pereira & Cristina Máguas
1.Groundwater lowering can produce dramatic changes in the physiological performance and survival of plant species. The impact of decreasing water availability due to climate change and anthropogenic groundwater extraction on coastal dune ecosystems has become of increasing concern, with uncertainties about how vegetation will respond in both the short and long terms. 2.We aimed to evaluate the water‐use responses of different plant functional types to increasing groundwater table depth and how this would affect their...

Data from: Contralateral noise stimulation delays P300 latency in school-aged children

Thalita Ubiali, Milaine Dominici Sanfins, Leticia Reis Borges & Maria Francisca Colella-Santos
Background and objective: The auditory cortex modulates auditory afferents through the olivocochlear system, which innervates the outer hair cells and the afferent neurons under the inner hair cells in the cochlea. Most of the studies that investigated the efferent activity in humans focused on evaluating the suppression of the otoacoustic emissions by stimulating the contralateral ear with noise, which assesses the activation of the medial olivocochlear bundle. The neurophysiology and the mechanisms involving efferent activity...

Data from: Carbon assimilation and habitat segregation in resurrection plants: a comparison between desiccation- and non-desiccation-tolerant species of Neotropical Velloziaceae (Pandanales)

Suzana Alcantara, Renato De Mello-Silva, Grazielle S. Teodoro, Kamila Drequeceler, David Ackerly & Rafael S. Oliveira
Desiccation tolerance is the ability that some organisms show to equilibrate their water content with that of dry air and recover when water supplies are re-established. This is a widespread although rare strategy in angiosperms, and most desiccation-tolerant (DT) species are restricted to tropical rock outcrops. Such restricted ecological range is attributed to weak competitive potential caused by low productivity, due to the temporal limitation in carbon assimilation that occurs when plants desiccate. However, few...

Data from: Plant defences limit herbivore population growth by changing predator–prey interactions

Mônica F. Kersch-Becker, André Kessler & Jennifer S. Thaler
Plant quality and predators are important factors affecting herbivore population growth, but how they interact to regulate herbivore populations is not well understood. We manipulated jasmonate-induced plant resistance, exposure to the natural predator community and herbivore density to test how these factors jointly and independently affect herbivore population growth. On low-resistance plants, the predator community was diverse and abundant, promoting high predator consumption rates. On high-resistance plants, the predator community was less diverse and abundant,...

Data from: Resource-Area-Dependence Analysis: inferring animal resource needs from home-range and mapping data

Robert E. Kenward, Eduardo M. Arraut, Peter A. Robertson, Sean S Walls, Nicholas M Casey & Nicholas J Aebischer
An animal’s home-range can be expected to encompass the resources it requires for surviving or reproducing. Thus, animals inhabiting a heterogeneous landscape, where resource patches vary in size, shape and distribution, will naturally have home-ranges of varied sizes, so that each home-range encompasses a minimum required amount of a resource. Home-range size can be estimated from telemetry data, and often key resources, or proxies for them such as the areas of important habitat types, can...

Data from: Patterns of cranial shape diversification during the phylogenetic branching process of New World monkeys (Primates: Platyrrhini)

Sergio I Perez, Júlia Klaczko, Guido Rocatti & Sergio F Dos Reis
One of the central topics in evolutionary biology is understanding the processes responsible for phenotypic diversification related to ecological factors. New World monkeys are an excellent reference system to investigate processes of diversification at macroevolutionary scales. Here, we investigate the cranial shape diversification related to body size and ecology during the phylogenetic branching process of platyrrhines. To investigate this diversification, we used geometric morphometric techniques, a molecular phylogenetic tree, ecological data and phylogenetic comparative methods....

Data from: Out of the Andes: patterns of diversification in clearwing butterflies

Marianne Elias, Mathieu Joron, Keith Willmott, Vera Kaiser, Karina Silva-Brandão, Carlos Arias, Luz Miryam Gomez Piñeres, Sandra Uribe, Andrew Brower, André Freitas & Chris Jiggins
Global biodiversity peaks in the tropical forests of the Andes, a striking geological feature that has likely been instrumental in generating biodiversity by providing opportunities for both vicariant and ecological speciation. However, the role of these mountains in the diversification of insects, which dominate biodiversity, has been poorly explored using phylogenetic methods. Here we study the role of the Andes in the evolution of a diverse Neotropical insect group, the clearwing butterflies. We used dated...

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