Species composition and plant traits: Characterization of the biogeomorphological succession within contrasting river corridors

2019 ◽  
Author(s):  
Eric Tabacchi ◽  
Eduardo González ◽  
Dov Corenblit ◽  
Virginia Garófano‐Gómez ◽  
Anne‐Marie Planty‐Tabacchi ◽  
...  
Keyword(s):  
Species Composition ◽  
Plant Traits ◽  
River Corridors

Species composition and chemical characterization of Sargassum influx at six different locations along the Mexican Caribbean coast

2021 ◽  
pp. 148852
Author(s):  
Erika Vazquez-Delfín ◽  
Yolanda Freile-Pelegrín ◽  
Adán Salazar-Garibay ◽  
Elisa Serviere-Zaragoza ◽  
Lia C. Méndez-Rodríguez ◽  
...  
Keyword(s):  
Species Composition ◽  
Chemical Characterization ◽  
Caribbean Coast ◽  
Mexican Caribbean

Biofilm characterization of several wastewater treatment plants with rotating biological contactors in Madrid (Spain)

1998 ◽  
Vol 37 (4-5) ◽  
pp. 215-218 ◽  
Author(s):  
B. Pérez-Uz ◽  
C. Franco ◽  
M. Martín-Cereceda ◽  
L. Arregui ◽  
I. Campos ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Species Composition ◽  
Wastewater Treatment Plants ◽  
Species Level ◽  
Plant Performance ◽  
Ciliate Species ◽  
Level Ii ◽  
Rotating Biological Contactors ◽  
One Year

Ciliate communities were studied in the biofilms of three plants with rotating biological contactors (RBCs) over the period of one year. The aims of this study were: (i) to characterize ciliates to species level; (ii) to determine their abundance and spatial variation through the biological system; and (iii) to relate the spatial segregation and richness of ciliate species to plant performance. A number of species ranging from 33 to 67 were identified at the different plants. The overall best represented groups were peritrichs followed by scuticociliates (Las Matas), cyrtophorids (Boadilla) or hypotrichs (Camarma). Comparison of RBCs and activated sludge communities indicated that even though both were mainly constituted by peritrichs, differences in groups and species composition were observed.

scholarly journals Characterization of Protistan Assemblages in the Ross Sea, Antarctica, by Denaturing Gradient Gel Electrophoresis

2004 ◽  
Vol 70 (4) ◽  
pp. 2028-2037 ◽  
Author(s):  
Rebecca J. Gast ◽  
Mark R. Dennett ◽  
David A. Caron
Keyword(s):  
Species Composition ◽  
Gel Electrophoresis ◽  
Denaturing Gradient Gel Electrophoresis ◽  
Ross Sea ◽  
Morphological Characterization ◽  
Culture Independent ◽  
Gradient Gel Electrophoresis ◽  
Ice Floes ◽  
Protistan Species

ABSTRACT The diversity of protistan assemblages has traditionally been studied using microscopy and morphological characterization, but these methods are often inadequate for ecological studies of these communities because most small protists inherently lack adequate taxonomic characters to facilitate their identification at the species level and many protistan species also do not preserve well. We have therefore used a culture-independent approach (denaturing gradient gel electrophoresis [DGGE]) to obtain an assessment of the genetic composition and distribution of protists within different microhabitats (seawater, meltwater or slush on sea-ice floes, and ice) of the Ross Sea, Antarctica. Samples of the same type (e.g., water) shared more of the same bands than samples of different types (e.g., ice versus water), despite being collected from different sites. These findings imply that samples from the same environment have a similar protistan species composition and that the type of microenvironment significantly influences the protistan species composition of these Antarctic assemblages. It should be noted that a large number of bands among the samples within each microhabitat were distinct, indicating the potential presence of significant genetic diversity within each microenvironment. Sequence analysis of selected DGGE bands revealed sequences that represent diatoms, dinoflagellates, ciliates, flagellates, and several unidentified eukaryotes.

scholarly journals Floristic characterization of an Atlantic Rainforest remnant in Southern Sergipe: Crasto forest

2015 ◽  
Vol 15 (1) ◽  
Author(s):  
Myrna Friederichs Landim ◽  
Carolyn Elinore Barnes Proença ◽  
Adeline Brito Sales ◽  
Ilaíne Silveira Matos
Keyword(s):  
Species Composition ◽  
Atlantic Forest ◽  
Northeastern Brazil ◽  
Species List ◽  
Forest Remnant ◽  
Plant Collections ◽  
Lowland Forests ◽  
Total Species ◽  
New Occurrences

The state of Sergipe has suffered extreme reduction of its Atlantic Forest area in the last decades. The objective of this study is to present an inventory of the Mata do Crasto flora, the largest Atlantic Forest Remnant in Sergipe (approximately 1,000 ha), located in the Municipality of Santa Luzia do Itanhy. An intensive survey was undertaken with monthly plant collections in the study area, for four years (1995 to 1999). Additionally, collections deposited in herbaria were consulted to complete the species list. A total of 324 species were found, belonging to 84 families and 193 genera. This study adds an additional 29 genera and 96 species to the Sergipe flora as new occurrences. The four most speciose families were the Fabaceae (33 species), Rubiaceae (24 species), Myrtaceae (23 species) and Melastomataceae (15 species), that accounted for ca. 30% of the total species. The taxonomic distinction of the area is very similar to three other lowland forests in Northeastern Brazil, although its species composition is quite distinct.

scholarly journals Floristic Biodiversity of Weed Communities in Arable Lands of Istria Peninsula (From 2005 to 2017)

2019 ◽  
Vol 38 (2) ◽  
pp. 166-177 ◽  
Author(s):  
Edita Štefanić ◽  
Vesna Kovačević ◽  
Slavica Antunović ◽  
Božica Japundžić-Palenkić ◽  
Dinko Zima ◽  
...  
Keyword(s):  
Species Composition ◽  
Plant Traits ◽  
Row Spacing ◽  
Weed Species ◽  
Row Crops ◽  
The Past ◽  
Full Development ◽  
Weed Communities ◽  
Olive Groves ◽  
The Difference

AbstractThis paper analyses the floristic biodiversity of weed communities in the arable lands of the Istrian peninsula during a twelve year period (2005–2017). A total of 50 fields were surveyed for each sampling time using the seven-degree Braun-Blanquet cover abundance scale in the following agricultural categories: a) permanent crops (vineyards/olive groves), b) alfalfa fields, c) cereals, d) row crops and e) ruderal areas. The taxonomic identification was performed during the full development of vegetation, for cereals in June and July, and for the rest – in August and September. A total of 175 weed species were determined during both study periods with Asteraceae and Poaceae families as the most abundant. Altogether, therophytes were dominant in both surveys, followed by hemycryptophytes and geophytes. Variations in species composition were visible in both study periods (2005 and 2017) as well as in the selected habitat types. Exclusive species were found in addition to those that were common for both surveys. Changes in species composition between 2005 and 2017 referred to the difference in row spacing in earlier period, and ruderal vs. agricultural habitats in the recent survey. The differences in phenological traits between the past and present surveys were greatest for germination season in permanent crops and row crops, flowering start for permanent crops, flowering period for ruderal area and weed height for permanent crops. Significant differences between the past and present survey for other plant traits did not occur.

scholarly journals Changes in species composition, diversity and biomass of herbaceous plant traits due to N amendment in a dry tropical environment of India

2014 ◽  
Vol 8 (3) ◽  
pp. 321-332 ◽  
Author(s):  
Punita Verma ◽  
R. Sagar ◽  
Hariom Verma ◽  
Preeti Verma ◽  
Dharmendra K. Singh
Keyword(s):  
Species Composition ◽  
Plant Traits ◽  
Tropical Environment ◽  
Herbaceous Plant
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