|
|
|
|
|
| Kiffer Jr.,Walace P.; Giuberti,Thaís Z.; Serpa,Karoline V.; Mendes,Flávio; Moretti,Marcelo S.. |
| ABSTRACT: We evaluated the growth of periphyton and colonization of sterilized cobbles by invertebrates in three coastal streams of the Atlantic Forest (Southeast Brazil) that differ in the conservation level of riparian zones. Because of differences in light availability and water temperature, we hypothesized the growth of periphytic algae would be higher in the most altered stream. Consequently, invertebrate assemblages would differ among streams. Cobbles with similar sizes were ashed and incubated for 7, 15, 30, 45 and 60 days in the studied streams. Despite periphyton growth was faster in the most altered stream, contents of chlorophyll-a did not differ among streams. A total of 954 individuals (98% insects) belonging to 36 taxa was found. Invertebrate... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Periphytic biomass; Invertebrate assemblages; Exposed substrates; Anthropogenic changes; Tropical streams. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212018000100214 |
| |
|
|
| Moretti,Marcelo S.; Loyola,Rafael D.. |
| Many species of Trichoptera larvae use organic or inorganic particles to build cases that protect them from predators. The study of the wide variety of structures produced by trichopterans is important to understand the evolution of case building behavior. The objective of this work was to investigate if larvae of Barypenthus concolor (Burmeister) are capable of selecting particles of specific sizes to build their cases. The study site was an altitudinal stream in Serra do Cipó National Park, MG, Brazil). Cases and substrate samples were collected at three sites of the stream and submitted to granulometric analyses. The average mass of each particle size found in each site was used to determine the particle size proportion present in the substrate. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Behavior; Benthic macroinvertebrate; Altitudinal stream. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000200024 |
| |
|
|
|
