Environmental Heterogeneity
Mostrando 13-24 de 200 artigos, teses e dissertações.
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13. Common moist diet replacement to promote sustainable Cobia Rachycentron canadum (Linnaeus) near- shore farming in Brazil
ABSTRACT: Cobia is one of the most promising warm water aquaculture species. In Brazil, cobia farming began in 2008 in the state of Rio de Janeiro from experimental scale facilities to regular near-shore farms based on fresh/frozen fish diets composed mostly of Sardinella sp. Despite the encouraging results achieved in the promotion of sustainable cobia farm
Sci. agric. (Piracicaba, Braz.). Publicado em: 2019-04
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14. Fish beta diversity responses to environmental heterogeneity and flood pulses are different according to reproductive guild
RESUMO A diversidade beta é influenciada por diferentes fatores em comunidades de planícies de inundação; contudo, acredita-se que a heterogeneidade ambiental e inundações sejam particularmente influentes. A influência da heterogeneidade ambiental e inundações na diversidade beta podem variar entre guildas que apresentam diferentes características
Neotrop. ichthyol.. Publicado em: 06/12/2018
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15. Local environmental controls of Atlantic Forest tree community assembly on a coastal continental island in southeastern Brazil
ABSTRACT Tropical forests with high species diversity are commonly found in rugged montane areas. We investigated causes of local tropical forest tree community assembly on a continental island with heterogeneous terrain. We recorded tree community (absolute species abundance), topography, soil, litter and location in 40 sampling units on two opposite sides
Acta Bot. Bras.. Publicado em: 29/11/2018
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16. The Impact of Traditional Silvopastoral System on the Mixed Ombrophilous Forest Remnants
ABSTRACT The results of an evaluation of the impact of traditional silvopastoral system on floristic and phytosociology of the Mixed Ombrophilous Forest (MOF) remnants, named caívas, in the North Plateau of Santa Catarina, South of Brazil are shown here to contribute to a better understanding of the impact of human activities on natural environments,. Ther
Floresta Ambient.. Publicado em: 13/09/2018
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17. Together yet separate: variation in soil chemistry determines differences in the arboreal-shrub structure of two contiguous rupestrian environments
ABSTRACT Rupestrian landscapes are characterized by vegetation mosaics comprised of different plant communities and strongly linked to environmental filters. These environments are nutrient-impoverished, and possess water retention deficits and high solar exposure. This study aimed to determine whether chemical properties of the soil shape the arboreal-shrub
Acta Bot. Bras.. Publicado em: 02/07/2018
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18. Effects of habitat heterogeneity on epiedaphic Collembola (Arthropoda: Hexapoda) in a semiarid ecosystem in Northeast Brazil
ABSTRACT The spatial distribution of abiotic resources and environmental conditions can vary at small scales within terrestrial ecosystems, influencing the composition of soil fauna. Epiedaphic springtails (Collembola) of a semiarid Caatinga ecosystem were studied to determine if factors related to vegetation structure, such as species richness, aerial bioma
Zoologia (Curitiba). Publicado em: 18/06/2018
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19. Paleodistribution of Neotropical species of Erythroxylum (Erythroxylaceae) in humid and dry environments
ABSTRACT Variation in environmental conditions during the Quaternary period served as important filters for the maintenance of vegetation types and for determining the composition of the current biota. We analyzed oscillations in the distributions of different vegetation types in Brazil during the Quaternary period using species of the genus Erythroxylum (Er
Acta Bot. Bras.. Publicado em: 21/09/2017
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20. Influence of substrate on the richness and composition of Neotropical cave fauna
ABSTRACT The food base in the subterranean environment consists mainly of allochthonous materials. In this environment the resources are distributed generally in a heterogeneous dispersed way and the distribution of resources and their availability determine where the terrestrial invertebrates will reside, which is important for understanding ecological rela
An. Acad. Bras. Ciênc.. Publicado em: 31/08/2017
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21. Effects of changes in the riparian forest on the butterfly community (Insecta: Lepidoptera) in Cerrado areas
ABSTRACT Preserved riparian vegetation usually has greater environmental complexity than the riparian vegetation modified by human actions. These systems may have a greater availability and diversity of food resources for the species. Our objective was to evaluate the effect of changes on the structure of the riparian forest on species richness, beta diversi
Rev. Bras. entomol.. Publicado em: 2017-01
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22. Phenotypic diversity and selection maintain Leishmania amazonensis infectivity in BALB/c mouse model
Leishmania are protozoan parasites that show remarkable diversity, as revealed by the various clinical forms of leishmaniasis, which can range from mild skin lesions to severe metastatic cutaneous/mucosal lesions. The exact nature and extent of Leishmania phenotypic diversity in establishing infection is not fully understood. In order to try to understand so
Mem. Inst. Oswaldo Cruz. Publicado em: 2017-01
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23. Patterns of species richness and abundance among cactus communities receiving different rainfall levels in the semiarid region of Brazil
ABSTRACT This study examines the variation in cacti species richness and abundance among sites with different average rainfall and soil types. We assessed a total of 3,660 individuals of six species of Cactaceae: Cereus jamacaru, Melocactus zehntneri, Pilosocereus gounellei, Pilosocereus pachycladus, Tacinga inamoena, and Tacinga palmadora. The greatest spec
Acta Bot. Bras.. Publicado em: 26/10/2016
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24. Distribution of the members of the Pipiens Assemblage in the sympatric area from Argentina: which is where and when?
Given their medical and veterinary relevance, the members of the Pipiens Assemblage are a worldwide target of ecological research. The distribution of Culex pipiens s.s. and Cx. quinquefasciatus converge in Buenos Aires, Argentina, where hybrids have been detected. Each member of the assemblage exhibits a distinct eco-physiological behaviour that can affect
Mem. Inst. Oswaldo Cruz. Publicado em: 24/10/2016