1884 - Dynamics of microbial nutrient cycling controlled by nitrogen availability in tropical caves (Brazil)

2018 ◽  
Author(s):  
Caio Cesar Pires de Paula
Keyword(s):  
Nutrient Cycling ◽  
Nitrogen Availability

scholarly journals Heat stress reduces the contribution of diazotrophs to coral holobiont nitrogen cycling

2021 ◽  
Author(s):  
Nils Rädecker ◽  
Claudia Pogoreutz ◽  
Hagen M. Gegner ◽  
Anny Cárdenas ◽  
Gabriela Perna ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Heat Stress ◽  
Nutrient Cycling ◽  
Environmental Conditions ◽  
Nitrogen Availability ◽  
Coral Tissue ◽  
Stylophora Pistillata ◽  
Algal Symbionts ◽  
Coral Holobiont ◽  
Algal Symbiosis

AbstractEfficient nutrient cycling in the coral-algal symbiosis requires constant but limited nitrogen availability. Coral-associated diazotrophs, i.e., prokaryotes capable of fixing dinitrogen, may thus support productivity in a stable coral-algal symbiosis but could contribute to its breakdown when overstimulated. However, the effects of environmental conditions on diazotroph communities and their interaction with other members of the coral holobiont remain poorly understood. Here we assessed the effects of heat stress on diazotroph diversity and their contribution to holobiont nutrient cycling in the reef-building coral Stylophora pistillata from the central Red Sea. In a stable symbiotic state, we found that nitrogen fixation by coral-associated diazotrophs constitutes a source of nitrogen to the algal symbionts. Heat stress caused an increase in nitrogen fixation concomitant with a change in diazotroph communities. Yet, this additional fixed nitrogen was not assimilated by the coral tissue or the algal symbionts. We conclude that although diazotrophs may support coral holobiont functioning under low nitrogen availability, altered nutrient cycling during heat stress abates the dependence of the coral host and its algal symbionts on diazotroph-derived nitrogen. Consequently, the role of nitrogen fixation in the coral holobiont is strongly dependent on its nutritional status and varies dynamically with environmental conditions.

Nutrient cycling from theMusamother plant at various physiological stages to suckers as affected by spacing and sucker retention using tracer techniques

Fruits ◽  
2002 ◽  
Vol 57 (3) ◽  
pp. 143-151 ◽  
Author(s):  
Sajan Kurien ◽  
Paickattumana Suresh Kumar ◽  
Nerukavil Varieth Kamalam ◽  
Pallacken Abdul Wahid
Keyword(s):  
Nutrient Cycling ◽  
Tracer Techniques

Significance of euphotic sediments to oxygen and nutrient cycling in a temperate estuary

1992 ◽  
Vol 87 ◽  
pp. 51-61
Author(s):  
WM Rizzo ◽  
GL Lackey ◽  
RR Christian
Keyword(s):  
Nutrient Cycling ◽  
Temperate Estuary

A Loblolly Pine Management Guide: Foresters' Primer in Nutrient Cycling

1986 ◽  
Author(s):  
Jacques R. Jorgensen ◽  
Carol G. Wells
Keyword(s):  
Nutrient Cycling ◽  
Loblolly Pine

Nitrogen Availability to Wheat as Affected by Depth of Nitrogen Placement 1

1976 ◽  
Vol 68 (3) ◽  
pp. 524-526 ◽  
Author(s):  
L. A. Daigger ◽  
D. H. Sander
Keyword(s):  
Nitrogen Availability

Plant Community Dynamics, Nutrient Cycling, and Alternative Stable Equilibria in Peatlands

2002 ◽  
Vol 160 (5) ◽  
pp. 553
Author(s):  
Pastor ◽  
Peckham ◽  
Bridgham ◽  
Weltzin ◽  
Chen
Keyword(s):  
Nutrient Cycling ◽  
Plant Community ◽  
Community Dynamics ◽  
Plant Community Dynamics ◽  
Stable Equilibria

Nutrient Cycling and Limitation

2018 ◽  
Author(s):  
Peter Vitousek
Keyword(s):  
Nutrient Cycling

NUTRIENT CYCLING IN THE PHOSPHORIA SEA

2017 ◽  
Author(s):  
Brett Smith ◽  
◽  
Michael Kipp ◽  
Eva E. Stüeken ◽  
Roger Buick
Keyword(s):  
Nutrient Cycling
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