Anammox Bacterial Diversity in Various Aquatic Ecosystems Based on the Detection of Hydrazine Oxidase Genes (hzoA/hzoB)

2010 ◽  
Vol 61 (2) ◽  
pp. 264-276 ◽  
Author(s):  
Matthew D. Hirsch ◽  
Zachery T. Long ◽  
Bongkeun Song
Keyword(s):  
Bacterial Diversity ◽  
Aquatic Ecosystems

scholarly journals Metabarcoding for bacterial diversity assessment: looking inside Didymosphenia geminata mats in Patagonian aquatic ecosystems

2021 ◽  
Vol 16 (1) ◽  
pp. 43-61
Author(s):  
Ana Suescún ◽  
Karla Martinez-Cruz ◽  
Maialen Barret ◽  
Leyla Cárdenas
Keyword(s):  
Bacterial Diversity ◽  
Aquatic Ecosystems ◽  
Didymosphenia Geminata ◽  
Diversity Assessment

Commensals of Nepenthes pitchers

2018 ◽  
Author(s):  
Leonora S. Bittleston
Keyword(s):  
Food Web ◽  
Bacterial Diversity ◽  
Aquatic Ecosystems ◽  
Primary Producers ◽  
Pitcher Plants ◽  
Ephemeral Habitats ◽  
Surrounding Soil

Carnivorous Nepenthes pitcher plants contain aquatic ecosystems within each fluid-filled pitcher. Communities of arthropods and microbes colonize pitcher pools, and some organisms are endemic to the pitcher habitat. Flies and mites are the most apparent colonizers, and together with numerous protists, fungi, and bacteria, they form a food web of predators, decomposers, and primary producers. Bacterial diversity and composition are correlated strongly with fluid pH. Closely related organisms co-occur within pitchers, suggesting that competition is not the primary structuring force of pitcher communities. Pitchers are ephemeral habitats when compared with surrounding soil, and the former communities have fewer organisms and are less predictable than the latter. It is still unknown to what extent pitcher plants and their inhabitants influence one another’s fitness.

Minimal and dynamic bacterial diversity in grease trap revealed by molecular analysis

2012 ◽  
Vol 43 (1) ◽  
pp. 29-41 ◽  
Author(s):  
Lucas F.S. ◽  
Richard F. ◽  
Adolphe Y. ◽  
Haenn S. ◽  
Moilleron R. ◽  
...  
Keyword(s):  
Bacterial Diversity ◽  
Molecular Analysis

Sanitary-Hydrobiological Characteristics of Aquatic Ecosystems in terms of Microphytobenthos

2011 ◽  
Vol 47 (6) ◽  
pp. 63-74
Author(s):  
O. P. Oksiyuk ◽  
O. A. Davydov
Keyword(s):  
Aquatic Ecosystems

Use of the Indices of Macrozoobenthos Diversity as Indicators of the State of Aquatic Ecosystems

2003 ◽  
Vol 39 (4) ◽  
pp. 16-25 ◽  
Author(s):  
A. V. Lyashenko ◽  
A. A. Protasov
Keyword(s):  
Aquatic Ecosystems ◽  
The State

Extracellular enzymatic activities in the aquatic ecosystems of the Danube Delta. 2. Alkaline phosphatase activity

2021 ◽  
Vol 26 (1) ◽  
pp. 2269-2274
Author(s):  
IOAN PĂCEŞILĂ ◽  
EMILIA RADU
Keyword(s):  
Alkaline Phosphatase ◽  
Water Column ◽  
Aquatic Ecosystems ◽  
Temporal Dynamics ◽  
Extracellular Enzyme ◽  
Danube Delta ◽  
Phytoplankton Communities ◽  
Extracellular Enzymatic Activities ◽  
Adjacent Channels ◽  
Hydrolysis Of

Phosphorus is one of the most important inorganic nutrients in aquatic ecosystems, the development and functioning of the phytoplankton communities being often correlated with the degree of availability in assimilable forms of this element. Alkaline phosphatase (AP) is an extracellular enzyme with nonspecific activity that catalyses the hydrolysis of a large variety of organic phosphate esters and release orthophosphates. During 2011-2013, AP Activity (APA) was assessed in the water column and sediments of several aquatic ecosystems from Danube Delta: Roșu Lake, Mândra Lake and their adjacent channels – Roșu-Împuțita and Roșu-Puiu. The intensity of APA widely fluctuated, ranging between 230-2578 nmol p-nitrophenol L-1h-1 in the water column and 2104-15631 nmol p-nitrophenol g-1h-1 in sediment. Along the entire period of the study, APA was the most intense in Roșu-Împuțita channel, for both water and sediment samples. Temporal dynamics revealed its highest values in summer for the water column and in autumn for sediment. Statistical analysis showed significant seasonal diferences of the APA dynamics in spring vs. summer and autumn for the water column, and any relevant diferences for sediment.

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