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| Sophia Rhizopoulou; Apostolis Argiropoulos; Emmanuel Spanakis; Demetris Gikas; Nikos Alexandredes; Danae Koukos; Demetrios Anglos. |
| Colour has attracted the interest and attention of many of the most gifted intellects of all time. Ideas of early thinkers were not -and could not have been- grasped on a scientific level without knowledge of a kind that lay far in the future. One character that is being considered is the colourful surfaces of living tissues, which could hardly have been visualized without a corresponding reference to the microscale parallel. Millions of years before man made manipulated synthetic structures, biological systems were using nanoscale architecture to produce striking optical effects. Here we show the microsculpture of the adaxial surface of flower petals from the asphodel, the Stork's-bill and the common poppy by using optical, scanning electron and... |
| Tipo: Manuscript |
Palavras-chave: Ecology. |
| Ano: 2008 |
URL: http://precedings.nature.com/documents/1523/version/1 |
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| Roderic Page. |
| This paper describes my entry in the Elsevier Grand Challenge "Knowledge Enhancement in the Life Sciences" contest. The entry takes a collection of fulltext issues of _Molecular Phylogenetics and Evolution_ as the starting point, then extracts citation links to both papers and data, such as Genbank sequences and specimens, together with geotagged localities, and builds a "web" of objects linked by typed relationships. Each object (such as a publication, a sequence, a specimen, a taxon name, etc.) is treated equally, so that you can take a publication and see what taxa it refers to, or take the taxon and find all the publications that refer to the taxon. Although the database has been seeded with some articles from... |
| Tipo: Manuscript |
Palavras-chave: Ecology; Bioinformatics. |
| Ano: 2008 |
URL: http://precedings.nature.com/documents/2579/version/1 |
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| Emiliana Simon-Thomas; Disa Sauter; Lara Sinicropi-Yao; Anna Abramson; Dacher Keltner. |
| Studies of emotion signaling have proven critical to scientific advances in understanding emotion, informing claims about the evolutionary origins of different emotions1, the central and peripheral nervous system correlates of emotion 2 3 and even which states warrant consideration in emotion taxonomies 4. An initial wave of empirical studies of emotion-related facial expression5 and vocalization 6 7 has concentrated almost exclusively on a limited set of emotions - anger, disgust, fear, sadness, surprise, happiness, and tenderness. More recent work on emotional facial expressions has expanded this framework, documenting reliable displays of other emotions like embarrassment and shame 8, pride 9, and love and desire 10 . Here, we present two studies that... |
| Tipo: Manuscript |
Palavras-chave: Ecology; Neuroscience. |
| Ano: 2007 |
URL: http://precedings.nature.com/documents/1356/version/1 |
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| Abhay Krishna. |
| In a fascinating tussle of perspectives in Volume 6 and issue no 3 of april 2008 Frontiers in Ecology and Evolution, Martin A Nuñez and Gregory M Crustinger enlist ways to brace up with the recent literature. They advocate that PhD students should choose a well studied system to have better chances of success. On the other side of this fascinating tussle Daniel Simberloff and Nathan J Sanders agree with there enthusiastic case and approaches for bracing up with the recent literature. However, they disagree with the play safe strategy of start-ups in ecology and evolution.

For me this tussle of perspectives is really fascinating. It underlines the story of our times. In the times of information explosion, should... |
| Tipo: Manuscript |
Palavras-chave: Ecology; Bioinformatics; Earth & Environment. |
| Ano: 2008 |
URL: http://precedings.nature.com/documents/1959/version/1 |
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| David Parker; Thomas Avers; Michael Courtney. |
| Background: The cutbow trout (Oncorhynchus mykiss x clarkii) is a fertile hybrid of rainbow and cutthroat trout. Little published length-weight data is available for this hybrid, and a standard weight curve is not established. Eleven Mile Reservoir is a clear mountain reservior in Colorado with a surface area of 13.4 square kilometers, an average depth of 10 m, and a maximum depth of 41 m. 80,000 cutbow trout were stocked through the ice in late winter before samples were taken.
Materials and Methods: Angling provided 171 samples which were weighed and measured (total length and fork length). Dressed weight was also determined with the scales, head, and entrails removed. Estimates of parameters a and b in the model, W(L) = aLb, were... |
| Tipo: Manuscript |
Palavras-chave: Ecology. |
| Ano: 2011 |
URL: http://precedings.nature.com/documents/6432/version/1 |
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| Petanidou, T.; Van Laere, A.; Ellis, W.; Smets, E.. |
| We studied the amino acid (AA) composition of the floral nectars of 73 plant species occurring in a phryganic (East Mediterranean garrigue) community and investigated whether AA and sugar composition is shaped by evolutionary (plant phylogeny), ecological (flowering time as a direct effect of summer drought) and coevolutionary (pollinator partnership) constraints. Our study utilised an extensive plantpollinator matrix compiled in the same area where the plants had been sampled. Using HPLC we detected 22 AA compounds/groups of compounds, out of which 15 were commonly present in almost all nectars. Among all AAs, phenylalanine was the most abundant, especially in keystone (ââcornucopianââ) plant species visited by many insect species, such as the... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Floral nectar; Composition; Mediterranean; Evolution; Ecology; Coeveloution. |
| Ano: 2006 |
URL: http://www.repository.naturalis.nl/record/407342 |
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| Jamie Reilly; David Biun; Wind Cowles; Jonathan Peelle. |
| Where did words come from? The traditional view is that the relation between the sound of a word and its meaning is arbitrary. An alternative hypothesis, known as sound symbolism, holds that form-meaning correspondence is systematic. Numerous examples of sound symbolism exist across natural language phyla. Moreover, cross-linguistic similarities suggest that sound symbolism represents a language universal. For example, many unrelated languages affix an "ee" sound to words in order to emphasize size distinctions or express affection (e.g., look at the teeny weeny baby); other such phonetic universals are evident for object mass, color, brightness, and aggression. We hypothesize that sound symbolism reflects sensitivity to an ecological law... |
| Tipo: Manuscript |
Palavras-chave: Developmental Biology; Ecology; Neuroscience. |
| Ano: 2008 |
URL: http://precedings.nature.com/documents/2369/version/1 |
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| Kevin Duffy. |
| Animal movements can influence their ecology and demographics. Animal movements are often characterized by path structures with directional persistence. The extent to which directional persistence improves forage success is investigated in this paper using theoretical simulations. It is shown that a movement strategy with directional persistence enables simulated animals to find more forage as compared to a random movement strategy. Situations where resources are chosen with certainty (optimally) are even more successful. Choosing resource with certainty cannot result in directional persistence. However, in cases where animals choose with certainty adjacent cells with resource but continue in their existing direction if none of these have resources then... |
| Tipo: Manuscript |
Palavras-chave: Ecology. |
| Ano: 2010 |
URL: http://precedings.nature.com/documents/5156/version/1 |
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| Nicholas Mirotchnick; Owen Atkin; Marc Cadotte; Matthew Turnbull; Kevin Griffin. |
| Background/Questions/Methods:
Arctic vegetation represents a significant portion of the world’s
global carbon stocks and is particularly sensitive to global climate
change. Net plant carbon exchange depends on both photosynthesis and
respiration, the latter of which is poorly understood in arctic
ecosystems and yet is highly sensitive to global environmental change.
 Mitochondrial respiration can confound measurements of photosynthesis
and thus is often isolated by measuring it in the dark. We also know,
however, that respiration can be inhibited by light, which complicates
extrapolations from... |
| Tipo: Presentation |
Palavras-chave: Ecology; Evolutionary Biology. |
| Ano: 2010 |
URL: http://precedings.nature.com/documents/5375/version/1 |
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| Jayna L. DeVore; Kristen K. Cecala; John C. Maerz. |
| Background/Question/Methods 
Student engagement is tied to course performance and information retention. Shifting the focus of the classroom from a lecture-based approach to a student-centered learning environment is one way to achieve this goal. One tool that can be used to allow student contribution to the content and direction of a course is a wiki. Wikis are highly flexible collaborative websites that can be structured to meet course needs and allow multiple users to contribute to site content. They provide a platform where real-time editing can be performed in a flexible 'topical' format. They are intended to promote group learning through collaboration rather than isolated reflection, and can provide another... |
| Tipo: Poster |
Palavras-chave: Ecology. |
| Ano: 2010 |
URL: http://precedings.nature.com/documents/5244/version/1 |
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| Tracy Packiam Alloway; Ross G. Alloway. |
| Working memory, our ability to process and remember information, is linked to a range of cognitive activities from reasoning tasks to verbal comprehension. There is also extensive evidence of the relationship between working memory and learning outcomes. However, some researchers suggest that working memory is simply a proxy for IQ and does not make a unique contribution to learning outcomes. Here we show that children's working memory skills at 5 years of age was the best predictor of reading, spelling, and math outcomes six years later. IQ, in contrast, accounted for a smaller portion of unique variance to reading and math skills, and was not a significant predictor of spelling performance. Our results demonstrate that working memory is not a... |
| Tipo: Manuscript |
Palavras-chave: Ecology; Neuroscience. |
| Ano: 2008 |
URL: http://precedings.nature.com/documents/2343/version/1 |
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| Attias,Nina; Miranda,Flávia R.; Sena,Liana M.M.; Tomas,Walfrido M.; Mourão,Guilherme M.. |
| ABSTRACT It is believed that the two species of Tolypeutes Illiger, 1811are the only armadillos that do not dig their own burrows, and that these species simply re-use burrows dug by other species. Here, we show that Tolypeutes matacus (Desmarest, 1804) and Tolypeutes tricinctus (Linnaeus, 1758) dig their own burrows. We describe the burrows and three other types of shelters used by them, and provide measurements and frequency of use of the different types of shelter. We have studied free-ranging individuals of T. matacus in two locations in Central Brazil and individuals of T. tricinctus in semi-captivity in the Northeast of Brazil. Individuals of T. matacus were found primarily in small burrows (76%), straw nests (13%), shallow depressions covered with... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Digging behavior; Ecology; Xenarthra. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702016000404001 |
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| FEITOZA, L. R.; COELHO, D. T.; SILVA, T. C. A. da; RESENDE, M.. |
| Cerca de 308.000 km2, isto e, 53% do territorio do Estado de Minas Gerais estao incluidos na regiao dos Cerrados, onde predominam latossolos com propriedades fisicas adequadas para a abacaxicultura. A incorporacao desses solos ao processo de producao agricola brasileira tem sido de grande relevancia. Dentre as alternativas de uso que eles oferecem para a fruticultura, destaca-se o cultivo do abacaxizeiro, que se mostra adaptado ao conjunto de condicoes ecologicas proprias dessas areas. Todavia, sob diferentes climas, o desenvolvimento da planta e a qualidade do fruto, variam sensivelmente, e, a diversidade de condicoes na regiao em estudo, configura para obtencao de produtos de qualidade variada. Foi realizado estudo sobre as exigencias ecologicas da... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Zoneamanto agricola; Minas Gerais; Brasil; Agricultural zones; Agroecologicalz oning; Ecologic zones; Environments; Fence.; Abacaxi; Ananás Comosus; Cerrado; Latossolo; Zoneamento Ecológico.; Ananas; Agricultural zoning; Brazil; Ecology; Pineapples.. |
| Ano: 1985 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/547482 |
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| ARAUJO FILHO, J. C. de. |
| A regiao Nordeste do Brasil apresenta uma diversidade muito grande do seu quadro natural. Compreende paisagens com chapadas, planaltos, depressoes, baixadas, varzeas, dunas, restingas, mangues; florestas, cerrados, caatingas; solos de alta e baixa fertilidade natural, profundos, rasos; relevo plano, pouco movimentado e movimentado; clima quente e umido, quente e seco, etc. Por nao existir nenhum documento com uma analise integrada do quadro natural e agrossocioeconomico da regiao, a EMBRAPA desenvolveu o presente estudo com a meta principal de caracterizar e espacializar os diversos ambientes naturais que integram a regiao. O objetivo principal do zoneamento agroecologico do Nordeste foi subsidiar orgao de desenvolvimento e credito na elaboracao e analise... |
| Tipo: Outras publicações técnicas (INFOTECA-E) |
Palavras-chave: Zoneamento agroecologico; Nordeste; Agroecological zoning; Natural resource; Northeast; Narural resource; Ecologia; Recurso Natural; Ecology. |
| Ano: 1995 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/131498 |
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| Winkler, S.. |
| En el bosque de niebla del San Lorenzo cerca de Santa Marta, a 2050 ms sobre nivel del mar, fueron medidas temperatura y humedad relativa durante 24 horas. En el mismo lapso se registraron los cambios de peso en las hojas de dos especies de Monochaetum (Melastomataceae), causados por la precipitación de rocío. Se analizó la anatomía de las hojas, y se le discute en relación con la estructura de su cutícula, de los factores ambientales y de las variaciones de peso. Se refiere a la formación de características epifíticas en Melastomatáceas de suelo, en relación con otras especies de Monochaetum presentes en la región de la Sierra Nevada de Santa Marta. |
| Tipo: Journal Contribution |
Palavras-chave: Ecology; Ecology; Http://aims.fao.org/aos/agrovoc/c_2467. |
| Ano: 1971 |
URL: http://hdl.handle.net/1834/3435 |
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| Santiago,André Luiz Cabral Monteiro de Azevedo; Trufem,Sandra Farto Botelho; Malosso,Elaine; Santos,Paulo Jorge Parreira dos; Cavalcanti,Maria Auxiliadora de Queiroz. |
| Thirty-eight taxa of Zygomycetes distributed in 15 genera were recorded from tapir (Tapirus terrestris), camel (Camelus bactrianus), horse (Equus caballus), deer (Cervus elaphus), agouti (Dasyprocta aguti), donkey (Equus asinus), llama (Llama glama) and waterbuck (Kobus ellipsiprymnus) dung collected at the Reserva Ecológica de Dois Irmãos located in Recife, State of Pernambuco, Northeast Brazil. The samples were collected on a monthly basis from June 2005 to May 2006, taken to the laboratory and incubated in moist chambers. Higher number of taxa was observed in the excrements of tapir, followed by deer and donkey. The highest number of species was detected for Mucor, followed by Pilobolus. Statistical analyses showed significant differences in richness of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coprophilous; Taxonomy; Ecology; Ruminants. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000100012 |
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| Registros recuperados: 900 | |
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