scholarly journals Comparing the importance of freshwater flows driving primary production in three tropical estuaries

2021 ◽  
Vol 169 ◽  
pp. 112565
Author(s):  
Michele A. Burford ◽  
Stephen J. Faggotter
Keyword(s):  
Primary Production ◽  
Tropical Estuaries

scholarly journals RACIÓN DIARIA Y CONSUMO DE ALIMENTO DE LA POBLACIÓN DE ANCHOVIA CLUPEOIDES (PISCES: ENGRAULIDAE) EN LA CIÉNAGA GRANDE DE SANTA MARTA, CARIBE COLOMBIANO

2016 ◽  
Vol 35 ◽  
Author(s):  
Guillermo Duque ◽  
Arturo Acero P.
Keyword(s):  
Body Weight ◽  
Primary Production ◽  
Coastal Lagoon ◽  
Trophic Levels ◽  
Daily Ration ◽  
Tropical Estuaries ◽  
High Productivity ◽  
High Primary Production

In tropical estuaries, most fishes feed at different hours during the day. To determine the daily ration and consumption of the Ciénaga Grande de Santa Marta (CGSM) population of Anchovia clupeoides monthly samplings of a 24 h cycle were taken at the coastal lagoon between October 1995 and June 1996. A total of 4389 specimens were examined. The population of A. clupeoides consumes almost twice its weight per year, representing a 0.53% of its body weight per day. Though the CGSM presents a high primary production (990 gC/m2/year), the percentage that is transferred to the population of A. clupeoides is relatively low (0.055%). Hence, it seems that the high productivity of the CGSM is not being transferred to upper trophic levels due to the kind of fitoplankton, mainly cianobacteria.

PRESENT AND FUTURE PROSPECTS FOR FORESTRY IN THE CENTRAL PUMICE REGION

1971 ◽  
pp. 14-17
Author(s):  
J. Ure
Keyword(s):  
New Zealand ◽  
Primary Production ◽  
Future Prospects ◽  
Export Markets ◽  
Local Conditions

The region contains half the area of exotic forest in New Zealand and the major industries dependent thereon. Both are expanding rapidly to meet promising export markets. Local conditions are particularly favourable for this form of primary production and continued expansion is expected.

Primary Production of Phytoepiphyton in Water Bodies of Kiev

2008 ◽  
Vol 44 (4) ◽  
pp. 35-41 ◽  
Author(s):  
O. A. Sosnovskaya ◽  
P. D. Klochenko ◽  
G. V. Kharchenko
Keyword(s):  
Primary Production ◽  
Water Bodies

ATMOSPHERIC N DEPOSITION TO THE COASTAL AREA OF THE BLACK SEA: SOURCES, INTRA-ANNUAL VARIATIONS AND IMPORTANCE FOR BIOGEOCHEMISTRY AND PRODUCTIVITY OF THE SURFACE LAYER

2017 ◽  
Author(s):  
Alla Varenik ◽  
Alla Varenik ◽  
Sergey Konovalov ◽  
Sergey Konovalov
Keyword(s):  
Primary Production ◽  
Black Sea ◽  
Marine Ecosystem ◽  
C:N Ratio ◽  
N Deposition ◽  
Local Source ◽  
The Black Sea ◽  
Coastal Zones ◽  
Atmospheric N Deposition ◽  
Urban Location

Atmospheric precipitations can be an important source of nutrients to open and coastal zones of marine ecosystem. Jickells [1] has published that atmospheric depositions can sup-port 5-25% of nitrogen required to primary production. Bulk atmospheric precipitations have been collected in a rural location at the Black Sea Crimean coast – Katsiveli settlement, and an urban location – Sevastopol city. Samples have been analyzed for inorganic fixed nitrogen (IFN) – nitrate, nitrite, and ammonium. Deposi-tions have been calculated at various space and time scales. The monthly volume weighted mean concentration of IFN increases from summer to winter in both locations. A significant local source of IFN has been revealed for the urban location and this source and its spatial influence have been quantified. IFN deposition with atmospheric precipitations is up to 5% of its background content in the upper 10 m layer of water at the north-western shelf of the Black Sea. Considering Redfield C:N ratio (106:16) and the rate of primary production (PP) in coastal areas of the Black Sea of about 100-130 g C m-2 year-1 we have assessed that average atmospheric IFN depositions may intensify primary production by 4.5% for rural locations, but this value is increased many-fold in urban locations due to local IFN sources.

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