Quantitative and production indices of phytoplankton as characteristics of aquatic ecosystem status

1999 ◽  
Vol 1 (3) ◽  
pp. 40-51
Author(s):  
G. V. Melenchuk
Keyword(s):  
Aquatic Ecosystem ◽  
Production Indices

REALIZATION OF PARENTAL INDICES OF COW PRODUCTIVITY IN DIFFERENT MILKING BREEDS AT BREEDING FARM "AGROFIRMA "PAKHMA"

2020 ◽  
Keyword(s):  
Milk Yield ◽  
Cattle Breed ◽  
Holstein Cattle ◽  
Milk Productivity ◽  
Cattle Breeds ◽  
Significant Difference ◽  
Production Indices ◽  
High Level ◽  
Beta Lactoglobulin ◽  
Percentage Protein

Combination of genotypes of main types’ genetic markers causes milk productivity in cattle. The article studies correlation between kappa casein genotypes (C3N3), beta-lactoglobulin (LGB), their complexes and milk production indices in cows bred under equal conditions at a breeding farm. The calculation of parental milk yield and fat indices between the three breeds showed a significant difference (P>0,999) of PCI of Ayrshire and Holstein cattle breed milk yield - 3395 kg, PCI of fat - 0,22%; between Holstein and Yaroslavl cattle breeds - 3200 kg, PCI offat - 0,16%. A significant difference of realization indices of protein between all three breeds was not stated. The highest realization ofparental milk yield index was stated - between Ayrshire and Yaroslavl cattle breeds- 113%, Holstein cattle breed - 88%. As for the fat and protein indices, all three cattle breeds showed a high realization of PCI from 98% to 109%. However, Holstein cattle breed showed the highest percentage: protein - 101%, fat - 109%. A significant difference of PCI realization of milk productivity in CSN3 and LGB genotypes was not stated. It was also stated that there is a tendency of high level parental indices realization when there is a higher number of B-allele variants in genotypes of cows.

Evaluation of Landfill Effects on Aquatic Ecosystems Using Benthic Macro-Invertebrates

1992 ◽  
Vol 26 (9-11) ◽  
pp. 2365-2367
Author(s):  
L. Cingolani ◽  
A. Morosi
Keyword(s):  
Aquatic Ecosystem ◽  
Aquatic Ecosystems ◽  
Drainage Area ◽  
Taxonomic Level ◽  
Significant Difference ◽  
Downstream Communities

The aim of this work was to verify the effectiveness of benthic macro-invertebrate observation in providing information about the effects of a landfill on an aquatic ecosystem. A significant difference between upstream and downstream communities from landfill drainage area was found. The adopted taxonomic level was sufficient to reach our object.

Are microplastics destabilizing the global network of terrestrial and aquatic ecosystem services?

2021 ◽  
pp. 111243
Author(s):  
Srinidhi Sridharan ◽  
Manish Kumar ◽  
Nanthi S. Bolan ◽  
Lal Singh ◽  
Sunil Kumar ◽  
...  
Keyword(s):  
Ecosystem Services ◽  
Aquatic Ecosystem ◽  
Global Network

scholarly journals Half of global methane emissions come from highly variable aquatic ecosystem sources

2021 ◽  
Author(s):  
Judith A. Rosentreter ◽  
Alberto V. Borges ◽  
Bridget R. Deemer ◽  
Meredith A. Holgerson ◽  
Shaoda Liu ◽  
...  
Keyword(s):  
Aquatic Ecosystem ◽  
Methane Emissions

scholarly journals Development of a schwarzite-based moving bed 3D printed water treatment system for nanoplastic remediation

RSC Advances ◽  
2021 ◽  
Vol 11 (32) ◽  
pp. 19788-19796
Author(s):  
Bramha Gupta ◽  
Rushikesh S. Ambekar ◽  
Raphael M. Tromer ◽  
Partha Sarathi Ghosal ◽  
Rupal Sinha ◽  
...  
Keyword(s):  
Water Treatment ◽  
Aquatic Ecosystem ◽  
Treatment System ◽  
Environmental Challenges ◽  
Moving Bed ◽  
Water Treatment System ◽  
3D Printed ◽  
The Impact

The impact of micro and nanoplastic debris on our aquatic ecosystem is among the most prominent environmental challenges we face today.

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