931 resultados para Semiarid. Cyanobacteria. Phytoplankton. Cyanotoxins. Scientific dissemination


Relevância:

20.00% 20.00%

Publicador:

Resumo:

v. 6 (1853)

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Otto-von-Guericke-Universität Magdeburg, Fakultät für Wirtschaftswissenschaft, Univ., Dissertation, 2015

Relevância:

20.00% 20.00%

Publicador:

Resumo:

The effects of hydrological disturbances by flooding and drought on the diversity and stability in a temporary river fish community in the Brazilian semiarid region were analyzed over the 1996 hydrological cycle. Twelve collections of fishes were made during the wet and dry phases, and 789 individuals of 16 species were collected. Diversity was measured using Simpson's Index (S) and community stability was analyzed by the variation in abundance using Kendall's W concordance test. Fish diversity in the Taperoá river was subjected to hydrological disturbances by flooding and drought. During the wet phase the diversity was higher (S = 0.855) than during the dry phase (S = 0.771). The community was considered stable during the whole annual hydrological cycle (W = 0.418 p < 0.001), but a higher stability in the community was found during the dry phase. During the dry phase the number of dominant species was smaller than during the wet phase.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

2

Relevância:

20.00% 20.00%

Publicador:

Resumo:

1

Relevância:

20.00% 20.00%

Publicador:

Resumo:

In this paper, 27 studies from the last decade which deal more or less explicitly with the International New Venture, global start-up or born-global phenomenon are first identified, and then fully examined and critically assessed as a basis for obtaining an adequate view of the state-of-the-art of this increasingly important research avenue in the field of International Entrepreneurship (IE). The methodology used for this synthetic review allow us to analyze a number of recent, purposefully-chosen studies that are systematically compared along the following criteria: 1) main objective and type of research; 2) theoretical framework/s of reference, 3) methodological issues, and 4) main findings and/or conclusions. As a result of this literature review, a critical assessment follows in which the most relevant benefits and contributions as well as potential drawbacks, limitations or major discrepancies in the research activities conducted so far are discussed. Finally, some suggestions and implications are provided in the form of future research directions.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

1-3