Consulta: subjectFacets:"Bioindicator species"
Registros recuperados: 3
Data/hora: 01/06/2024 09:28:34

Accumulation of nine metals and one metalloid in the tropical scallop Comptopallium radula from coral reefs in New Caledonia
Provedor de dados: 5
Autores: Metian, M.; Bustamante, Paco; Hedouin, L.; Warnau, M.
Uptake of waterborne Cd, Co, Mn and Zn was determined in laboratory experiments using radiotracer techniques (Cd-109, Co-57, Mn-54 and Zn-65). Labelled Zn was mainly accumulated in the digestive gland (65%) and Co in kidneys (81%); Cd and Mn were similarly distributed in digestive gland and gills. In a complementary field study, Ag, As, Cd, Co, Cr, Cu, Fe, Mn, Ni, and Zn were analysed in scallops collected at two stations showing different contamination levels. Digestive gland and kidneys displayed the highest concentrations. Ag, As, Cd, and Fe differed in soft tissues from the two stations, suggesting that Comptopallium radula could be a valuable local biomonitor species for these elements. Low Mn and Zn concentrations found in kidneys suggest that their...
Tipo: Text
Palavras-chave: Bioindicator species; Risk assessment; Pectinidae; Radiotracers; Arsenic; Trace elements; Tropical environment.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-6953.pdf

Allelopathic Potential of Sorghum bicolor at Different Phenological Stages
Provedor de dados: 87
Autores: ZUCARELI,V.; COELHO,E.M.P.; FERNANDES,W.V.; PERES,E.M.; STRACIERI,J.
ABSTRACT: This study aimed to assess the allelopathic potential of the aqueous extract of the shoot of Sorghum bicolor at different phenological stages on seed germination and initial growth of kale (Brassica oleracea var. acephala) seedlings, which is considered a bioindicator species. The experiment was carried out at five development stages of S. bicolor (40, 50, 60, 70, and 80 days after emergence), which was used as aqueous extract at six concentrations (0, 20, 40, 60, 80, and 100%) applied in four replications per treatment in 10 or 50 kale seeds per plot. The percentage of germination, germination rate index, root growth, shoot length, and dry matter of kale seedlings were analyzed in the presence of this extract on different days of collection and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allelochemicals; Aqueous extract of sorghum; Bioindicator species.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100219

Assemblage of drosophilids (Diptera, Drosophilidae) inhabiting flooded and nonflooded areas in the extreme South of Brazil
Provedor de dados: 92
Autores: Duarte,L.B.; Gottschalk,M.S.; Robe,L.J.
ABSTRACT Several studies on the potential use of drosophilid assemblages as bioindicator systems have been carried out in the last years. Nevertheless, the successful application of these organisms in these systems requires adequate filling of several knowledge gaps. In this sense, little is known about drosophilid assemblages in wetlands and flooded areas. The present study provides the first survey of drosophilid species inhabiting such environments in the extreme South of Brazil and compares general beta-diversity patterns between assemblages of flooded versus nonflooded areas. The specimens were collected with banana-baited traps, and the assemblages recovered in eight wetlands of the southernmost coast of Brazil were compared to those recovered from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beta-diversity; Bioindicator species; Gamma-diversity; Swamps; Wetlands.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262018000100029