Physiological Effects of Exposure to Copper and Chromium in Three Floating Aquatic Macrophyte Species

2021 ◽  
Vol 232 (1) ◽  
Author(s):  
Débora Cristina de Souza ◽  
Ana Carla Fontaneli ◽  
Ana Paula Peron ◽  
Sandro Froehner
Keyword(s):  
Aquatic Macrophyte ◽  
Physiological Effects ◽  
Macrophyte Species

scholarly journals Fish associated with aquatic macrophytes in the Chacororé-Sinhá Mariana Lake system and Mutum River, Pantanal of Mato Grosso, Brazil

2009 ◽  
Vol 69 (1) ◽  
pp. 101-108 ◽  
Author(s):  
EB. Pacheco ◽  
CJ. Da-Silva
Keyword(s):  
Eichhornia Crassipes ◽  
Aquatic Macrophytes ◽  
Biological Diversity ◽  
Aquatic Macrophyte ◽  
Environmental Conservation ◽  
Left Bank ◽  
Mato Grosso ◽  
Analysis Of Similarity ◽  
Eichhornia Azurea ◽  
Macrophyte Species

On the left bank of the Cuibá River, one of the main tributaries of the Pantanal in Mato Grosso, are located the Chacororé and Sinhá Mariana Lakes and the Mutum River, the littoral regions of which are covered with aquatic macrophytes, dominated by the species Eichhornia crassipes and Eichhornia azurea. To examine the ichthyofauna associated with this vegetation, in the year 2003, 3510 fish were collected, distributed among 83 species, and the limnological variables verified near the macrophyte stands where they were sampled. The most abundant and richest order was the Characiformes, followed by the Gymnotiformes and Siluriformes. Analysis of similarity showed a very low, or null, index that the limnological conditions and morphology of the aquatic macrophyte species provide habitat sufficiently homogeneous to give. The limnological conditions and morphology of the aquatic macrophyte species provide a sufficient habitat heterogeneity to give very low, or null, index values. Thus, environmental conservation measures should be more effective in promoting the conservation of the species, given the high levels of biological diversity found in the habitats studied.

scholarly journals Relationships of macrophyte species richness and environment in different water body types in the Central European region

2018 ◽  
Vol 54 ◽  
pp. 35 ◽  
Author(s):  
Kateřina Bubíková ◽  
Richard Hrivnák
Keyword(s):  
Species Richness ◽  
Water Body ◽  
Linear Models ◽  
Aquatic Macrophyte ◽  
European Region ◽  
Central European ◽  
Central European Region ◽  
Significant Difference ◽  
Macrophyte Species ◽  
Trees And Shrubs

Individual types of waterbodies are characterised by their specific environmental conditions controlling growth of aquatic macrophytes. We focused on effects of environmental factors on macrophyte species richness in canals, ponds, rivers and streams within Central European region. We employed generalised linear models (GLM) to assess separately overall macrophyte species data and data on wetland species (true aquatic plants and helophytes). No significant difference was revealed by comparing species richness among water body types, though canals were the richest water bodies and streams supported the lowest diversity of macrophytes. The models for all the waterbodies, except streams, contained at least two variables and the explained variability ranged from 37% to 77%. The most recurring variables were the coverage of fine substrate, turbidity, shading by bank and shore trees and shrubs, and altitude. Nevertheless, no obvious pattern of factors was observed for particular water body types. Our study confirmed that aquatic macrophyte species richness is shaped by a complexity of factors and necessity of targeting survey and further generalisation of results not only on one specific water body.

scholarly journals Environmental Characteristics and Anthropogenic Impact Jointly Modify Aquatic Macrophyte Species Diversity

2018 ◽  
Vol 9 ◽  
Author(s):  
Merja Elo ◽  
Janne Alahuhta ◽  
Antti Kanninen ◽  
Kristian K. Meissner ◽  
Katri Seppälä ◽  
...  
Keyword(s):  
Species Diversity ◽  
Anthropogenic Impact ◽  
Aquatic Macrophyte ◽  
Environmental Characteristics ◽  
Macrophyte Species

scholarly journals Functional macrophyte trait variation as a response to the source of inorganic carbon acquisition

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e12584
Author(s):  
Rafał Chmara ◽  
Eugeniusz Pronin ◽  
Józef Szmeja
Keyword(s):  
Leaf Area ◽  
Functional Traits ◽  
Environmental Variables ◽  
Inorganic Carbon ◽  
Aquatic Macrophyte ◽  
Secchi Depth ◽  
Leaf Traits ◽  
Wide Range ◽  
Macrophyte Species ◽  
Inorganic Carbon Acquisition

Background This study aims to compare variation in a range of aquatic macrophyte species leaf traits into three carbon acquisition groups: HCO3−, free CO2 and atmospheric CO2. Methods The leaf functional traits were measured for 30 species from 30 softwater lakes. Macrophyte species were classified into (1) free CO2, (2) atmospheric CO2 and (3) bicarbonate HCO3− groups. In each lake we collected water samples and measured eight environmental variables: depth, Secchi depth, photosynthetically active radiation (PAR), pH of water, conductivity, calcium concentration, total nitrogen and total phosphorus. In this study we applied the RLQ analysis to investigate the relationships between species functional traits (Q) and their relationship with environmental variables (R) constrained by species abundance (L). Results The results showed that: (1) Aquatic macrophytes exhibited high leaf trait variations as a response to different inorganic carbon acquisition; (2) Traits of leaves refer to the acquisition of carbon for photosynthesis and serve to maximise this process; (3) In the wide softwater habitat, macrophyte species exhibited an extreme range of leaf economic spectrum (leaf area, leaf dry weight and specific leaf area) and wide range of shape trait expressed as circularity; (4) Macrophyte leaf traits are the result of adaptation to carbon acquisition in ambient environment.

Aquatic macrophytes as a habitat for free-living nematodes

Nematology ◽  
2006 ◽  
Vol 8 (5) ◽  
pp. 691-701 ◽  
Author(s):  
Jasna Vidaković ◽  
Irella Bogut
Keyword(s):  
Aquatic Macrophyte ◽  
Dry Weight ◽  
Nematode Species ◽  
Trophic Group ◽  
Ceratophyllum Demersum ◽  
The North ◽  
Macrophyte Species ◽  
North Bank ◽  
Nature Park ◽  
Relative Abundances

Abstract The composition, trophic structure and diversity of nematode assemblages associated with three aquatic macrophyte species (Polygonum amphibium, Carex sp., Ceratophyllum demersum) were surveyed. Sampled stands were present at the three sites of the north bank in the Čonakut Channel (Nature Park Kopački rit, Croatia). They were all submerged during the period of investigation, which included two vegetation seasons. Nematode abundances (expressed as a number of individuals per 100 g of macrophyte dry weight) differ between the two vegetation seasons and between the sites, but not between the macrophyte species. In total, 19 nematode species were recorded. Chromadorina viridis, C. bioculata, Brevitobrilus stefanskii, Eutobrilus notus, Prodorylaimus longicaudatus and Ethmolaimus sp. were associated with all macrophyte species. Genera Eutobrilus, Brevitobrilus and Chromadorina were present at the highest relative abundances. Species diversity (H and Simpson's D) and evenness (Pielou's J), calculated on the nematode species level, display little or no change in relation to different macrophyte species. Ceratophyllum demersum associated nematode fauna had distinct dominance of one species (Eutobrilus notus) and consequently lower evenness, which was not statistically significant. Chewers (CH) represented the dominant trophic group of total nematode abundance for all three macrophyte species followed by epistrate feeders (EF). Detritus feeders (DF) and suction feeders (SF) were represented by low relative abundances. This paper is a contribution to ecology of aquatic nematodes associated with macrophyte species in mesoeutrophic to eutrophic slow flowing channel.

scholarly journals Temporal changes of aquatic macrophytes vegetation in a Iowland groundwater feed eutrophic course (Klátovské rameno, Slovakia)

2011 ◽  
Vol 76 (2) ◽  
pp. 141-150 ◽  
Author(s):  
Helena Oťahel'ová ◽  
Richard Hrivnák ◽  
Milan Valachovič ◽  
Georg A. Janauer
Keyword(s):  
Aquatic Macrophytes ◽  
Dominant Species ◽  
Aquatic Macrophyte ◽  
Species Abundance ◽  
Ecological Status ◽  
Temporal Changes ◽  
European Standard ◽  
Macrophyte Species ◽  
Good Ecological Status

Klátovské rameno is the lowland slow-flowing groundwater feed eutrophic tributary of the Malý Dunaj River (Danube Plain), where our study of temporal changes of aquatic macrophytes vegetation was realised in 1999 and 2005. For survey of aquatic vascular macrophytes the Kohler’s method (Janauer 2003) was used, which is compliant with European standard EN 14184. Altogether 35 aquatic macrophyte species were recorded during the survey. Nuphar lutea persisted as the most dominant species in 1996 and 2005. Species diversity increased slightly after the nine years: ten species immigrated to the watercourse. The changes in species abundance have shown weak differences, however the abundance of Sparganium emersum has increased markedly. Alien species Elodea canadensis and both S. emersum and Hydrocharis morsus-ranae significantly enlarged their distribution in the stream. The ecological quality of the river, based on the aquatic macrophytes assessment criteria, was slightly impaired after nine years, but still 90% of its studied course has a high or good ecological status.

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