Food Webs
Mostrando 1-12 de 69 artigos, teses e dissertações.
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1. Anthropogenic impacts on aquatic bacteria: a perspective from the tropics
Resumo O bacterioplâncton compreende um grupo altamente diversificado de microrganismos, que são dominantes nos ecossistemas aquáticos e desempenham um papel central no funcionamento desses ecossistemas e nos ciclos biogeoquímicos. Devido às suas elevadas taxas de dispersão e de mudança na composição, bem como alta adaptabilidade e plasticidade, os
Acta Limnol. Bras.. Publicado em: 14/11/2019
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2. Aquatic food webs will need to stand on giants’ shoulders
Resumo As teias tróficas têm sido impactadas especialmente nos últimos 30 anos. Isto ocorre em especial para teias tróficas com Espécies Generalistas Viajantes (MGS) que são espécies com alta mobilidade (movimento e dispersão) e flexibilidade em forrageamento e uso do habitat. Em geral, MGS são espécies de grande tamanho com habilidade de se mover
Acta Limnol. Bras.. Publicado em: 24/10/2019
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3. Biometry of neotropical invertebrates inhabiting floodplain rivers: unraveling bionomy
ABSTRACT Currently, it is widely recognized that invertebrates play key roles in neotropical floodplains and in many other environments worldwide. However, little information has been published concerning their biometry, in spite that it represents an essential tool for many different studies. Here, we provided length-mass and length-length relationships by
Iheringia, Sér. Zool.. Publicado em: 08/05/2017
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4. Genetic Variability and Symbiotic Efficiency of Erythrina velutina Willd. Root Nodule Bacteria from the Semi-Arid Region in Northeastern Brazil
ABSTRACT Legume-rhizobia symbiosis is a cross-kingdom association that results in large amounts of nitrogen incorporated in food webs. For the Brazilian semi-arid region, data on genetic variability and symbiotic efficiency of Papilionoidae rhizobial communities are very scarce. The aim of this study was to evaluate the genetic variability and the symbiotic
Rev. Bras. Ciênc. Solo. Publicado em: 06/02/2017
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5. Isotopic variation among Amazonian floodplain woody plants and implications for food-web research
Isotopic variation within food sources adds uncertainty to models intended to reconstruct trophic pathways. Understanding this variation is pivotal for planning sampling protocols for food-web research. This study investigates natural variation in C and N stable isotopes among plant species in two western Amazon flooded forests with contrasting watershed bio
Biota Neotrop.. Publicado em: 14/06/2016
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6. A closer look at the main actors of Neotropical floodplain food webs: functional classification and niche overlap of dominant benthic invertebrates in a floodplain lake of Paraná River
ABSTRACT Functional classification of animals is necessary to enhance the predictive power of food web models. However, while there is a large database for functional classification of benthic invertebrates (Functional Feeding Groups, FFG) in the temperate zone, the attribution of individual species of riverine invertebrates is still in its infancies in the
Iheringia, Sér. Zool.. Publicado em: 10/06/2016
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7. RelaÃÃes ecolÃgicas entre Melampus coffeus (Gastropoda: Pulmonata) e a serapilheira no mÃdio estuÃrio do rio Pacoti, Cearà / Ecological relations between Melampus coffeus (Gastropoda: Pulmonata) and the leaflitter in the middle estuary of Pacoti river, CearÃ
The litter is essential for the nutrients and organic matter cycles in forests ecosystems. These vegetal detritus are a food source to many groups of animals that act directly on the litter decomposition. Litter also seems to provide microhabitats and works as a shelter for many individuals of the mangrove fauna. The gastropod Melampus coffeus (Linnaeus, 175
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/04/2011
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8. Aquatic food webs in mangrove and seagrass habitats of Centla Wetland, a Biosphere Reserve in Southeastern Mexico
Manguezais e pradarias de gramíneas são importantes componentes das zonas costeiras tropicais em todo o mundo, sendo habitats comuns nos ''Pântanos de Centla'', uma Reserva da Biosfera localizada em Tabasco, México. Nesse trabalho, são investigadas as teias alimentares de habitats dominados por manguezais e pradarias de gramíneas, através de isótopos
Neotropical Ichthyology. Publicado em: 2010-03
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9. Dinâmica de Nutrientes e Redes Tróficas / Nutrient Dynamics and Foods Webs
A food web comprises exchanges of matter and energy that occur among species and between biotic and abiotic environment. Given that abiotic components form the basal resources, the approach of this work consists of evaluating the effects of nutrients input in strategic models that describe food web and chain dynamics. Its focus lies on the determination of t
Publicado em: 2010
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10. Estudo de interações de parasitoides de insetos endófagos em frutos do cerrado
Interactions between endofagous insects in fruits play an important role in ecological communities, since the seed survivorship and hence the successes in recruitment of plant populations are directed related to damage caused by the herbivory from these insects. Because of the specialization of the herbivorous insects, the insect-plant interactions tend to b
Publicado em: 2010
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11. Life cycle of Goeldichironomus holoprasinus goeldi (Diptera: Chironomidae) in laboratory
The larvae of Chironomidae are very important due to their density and role in aquatic food webs. Goeldichironomus holoprasinus Goeldi is one of the most abundant species of Chironomidae in man-made and natural systems, being widely used in water quality assessments. Because of its tolerance to stressing environmental factors, many studies have investigated
Neotropical Entomology. Publicado em: 2009-08
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12. Sistema hospedeiro-parasitoide associado à Piper glabratum Künth e P. mollicomum Künth (Piperaceae) no município de São Carlos, SP
This work presents biology and ecology data of host parasitoid insects associated with two plant species of the genus Piper L. (Piperaceae) ‐ P. glabratum and P. mollicomum. The phytophagous species studied belong to the order Lepidoptera and their parasitoids to the Hymenoptera and Diptera. The samples were carried out by entomological umbrella; the c
Publicado em: 2009