scholarly journals Collection and analysis of a global marine phytoplankton primary-production dataset

2021 ◽  
Vol 13 (10) ◽  
pp. 4967-4985
Author(s):  
Francesco Mattei ◽  
Michele Scardi
Keyword(s):  
Primary Production ◽  
Field Measurements ◽  
Global Scale ◽  
Marine Phytoplankton ◽  
Phytoplankton Production ◽  
Phytoplankton Primary Production ◽  
Heterogeneous Information ◽  
Natural Processes ◽  
In Situ Data ◽  
Earth’S Climate

Abstract. Phytoplankton primary production is a key oceanographic process. It has relationships with marine-food-web dynamics, the global carbon cycle and Earth's climate. The study of phytoplankton production on a global scale relies on indirect approaches due to the difficulties of field campaigns. Modeling approaches require in situ data for calibration and validation. In fact, the need for more phytoplankton primary-production data was highlighted several times during the last decades. Most of the available primary-production datasets are scattered in various repositories, reporting heterogeneous information and missing records. We decided to retrieve field measurements of marine phytoplankton production from several sources and create a homogeneous and ready-to-use dataset. We handled missing data and added variables related to primary production which were not present in the original datasets. Subsequently, we performed a general analysis highlighting the relationships between the variables from a numerical and an ecological perspective. Data paucity is one of the main issues hindering the comprehension of complex natural processes. We believe that an updated and improved global dataset, complemented by an analysis of its characteristics, can be of interest to anyone studying marine phytoplankton production and the processes related to it. The dataset described in this work is published in the PANGAEA repository (https://doi.org/10.1594/PANGAEA.932417) (Mattei and Scardi, 2021).

scholarly journals Collection and analysis of a global marine phytoplankton primary production dataset

2021 ◽  
Author(s):  
Francesco Mattei ◽  
Michele Scardi
Keyword(s):  
Primary Production ◽  
Field Measurements ◽  
Global Scale ◽  
Marine Phytoplankton ◽  
Phytoplankton Production ◽  
Phytoplankton Primary Production ◽  
Heterogeneous Information ◽  
Natural Processes ◽  
In Situ Data ◽  
Earth’S Climate

Abstract. Phytoplankton primary production is a key oceanographic process. It has relationships with the marine food webs dynamics, the global carbon cycle and the Earth’s climate. The study of phytoplankton production on a global scale relies on indirect approaches due to field campaigns difficulties. Modelling approaches require in situ data for calibration and validation. In fact, the need for more phytoplankton primary production data was highlighted several times during the last decades. Most of the available primary production datasets are scattered in various repositories, reporting heterogeneous information and missing records. We decided to retrieve field measurements of marine phytoplankton production from several sources and create a homogeneous and ready to use dataset. We handled missing data and added variables related to primary production which were not present in the original datasets. Subsequently, we performed a general analysis of the highlighting the relationships between the variables from a numerical and an ecological perspective. Data paucity is one of the main issues hindering the comprehension of complex natural processes. We believe that an updated and improved global dataset, complemented by an analysis of its characteristics, can be of interest to anyone studying marine phytoplankton production and the processes related to it. The dataset described in this work is published in the PANGAEA repository. DOI: https://doi.pangaea.de/10.1594/PANGAEA.932417 (Mattei and Scardi, 2021)

Collection and analysis of a global marine phytoplankton primary production dataset

2021 ◽  
Author(s):  
Francesco Mattei ◽  
Michele Scardi
Keyword(s):  
Primary Production ◽  
Field Measurements ◽  
Global Scale ◽  
Marine Phytoplankton ◽  
Phytoplankton Production ◽  
Phytoplankton Primary Production ◽  
Heterogeneous Information ◽  
Marine Food Webs ◽  
In Situ Data ◽  
Earth’S Climate

Phytoplankton primary production is a key oceanographic process. It has intimate relationships with the marine food webs dynamics, the global carbon cycle and the Earth’s climate. The study of phytoplankton production on a global scale relies on indirect approaches due to the difficulties associated with field campaigns. On the other hand, modelling approaches require in situ data for both calibration and validation. In fact, the need for more phytoplankton primary production data was highlighted several times during the last decades.Most of the available primary production datasets are scattered in various repositories, reporting heterogeneous information and missing records. For these reasons we decided to retrieve field measurements of marine phytoplankton primary production from several sources and create a homogeneous and ready to use dataset. We handled missing data and added several variables related to primary production which were not present in the original datasets. Subsequently, we carried out a general analysis of the dataset in which we highlighted the relationships between the variables from a numerical and an ecological perspective.Data paucity is one of the main issues hindering the comprehension of complex natural processes.In this framework, we believe that an updated and improved global dataset, complemented by an analysis of its characteristics, can be of interest to anyone studying marine phytoplankton production and the processes related to it.

Mapping size-specific phytoplankton primary production on a global scale

2010 ◽  
Vol 6 (1) ◽  
pp. 448-462 ◽  
Author(s):  
Robert J. W. Brewin ◽  
Samantha J. Lavender ◽  
Nick J. Hardman-Mountford
Keyword(s):  
Primary Production ◽  
Global Scale ◽  
Phytoplankton Primary Production

Phytoplankton primary production of three temporary northern prairie wetlands

1995 ◽  
Vol 52 (5) ◽  
pp. 897-902 ◽  
Author(s):  
Richard D. Robarts ◽  
Michael T. Arts ◽  
David B. Donald
Keyword(s):  
Primary Production ◽  
Trophic Levels ◽  
Temporary Ponds ◽  
Annual Production ◽  
Phytoplankton Production ◽  
Strongly Correlated ◽  
Prairie Wetlands ◽  
Phytoplankton Primary Production ◽  
Small Water ◽  
Production Values

Measurements of phytoplankton primary production in three temporary Alberta ponds indicate a huge potential carbon and energy source for higher trophic levels associated with these systems. The ponds had high levels of NO3-N (maximum 1.6 mg∙L−1) and PO4-P (maximum 3.6 mg∙L−1). Water temperature varied by as much as 15 °C over the diel cycle, while primary production peaked in mid-afternoon. Production rates ranged from 0.6 to 400 mg C∙m−3∙T−1 and were strongly correlated (r = 0.9) with phytoplankton density. Total annual production for the ponds varied from 187 to 3311 kg C. These annual production values are low relative to prairie lakes; however, the number of small temporary ponds is about three orders of magnitude greater than lakes making phytoplankton production of these small water bodies a potentially important source of energy in prairie food webs.

scholarly journals Seasonal and interannual fluctuations of phytoplankton primary production in the rybinsk water reservoir: effect of the weather and climatic changes

2019 ◽  
Vol 46 (3) ◽  
pp. 270-277
Author(s):  
A. I. Kopylov ◽  
T. S. Maslennikova ◽  
D. B. Kosolapov
Keyword(s):  
Primary Production ◽  
Abiotic Factors ◽  
Water Environment ◽  
Water Reservoir ◽  
Vegetation Period ◽  
Solar Irradiation ◽  
Biogenic Elements ◽  
Phytoplankton Production ◽  
Phytoplankton Primary Production ◽  
Environment Temperature

Seasonal and multi-annual dynamics of phytoplankton primary production were examined in the Rybinsk water reservoir (Upper Volga) in 2005–2014. Positive links were detected between the average values of plankton primary production during the vegetation period and abiotic factors of the water environment (temperature, solar irradiation, and concentration of biogenic elements), as well as between the primary production and the index of the North Atlantic Oscillation, excluding the data for the abnormally hot summer in 2010. Water temperature increase (up to 27.9°С) in summer 2010 caused a significant increase in phytoplankton production. Significant increase of phytoplankton primary production was noted in the Rybinsk water reservoir during the analysis period.

Phytoplankton Ecology of the Strait of Georgia, British Columbia

1979 ◽  
Vol 36 (6) ◽  
pp. 657-666 ◽  
Author(s):  
J. G. Stockner ◽  
D. D. Cliff ◽  
K. R. S. Shortreed
Keyword(s):  
Surface Waters ◽  
Light Attenuation ◽  
Marine Phytoplankton ◽  
Phytoplankton Production ◽  
Fraser River ◽  
Heterogeneous Distribution ◽  
Phytoplankton Primary Production ◽  
Strait Of Georgia ◽  
Phytoplankton Ecology ◽  
Phytoplankton Distribution

Observations of phytoplankton production, abundance, and distribution were made at 16 stations in the Strait of Georgia from 1975 to 1977. The discharge of turbid Fraser River water exerts a strong influence on phytoplankton production and distribution in surface waters by rapid light attenuation and horizontal advection. At plume boundaries and back eddies where light conditions improve, very high production occurs (> 4–5 g C∙m−2∙d−1), because of rapidly replenished nutrients supplied by the Fraser River. Advection, turbulence, zooplankton grazing, and summer nitrate depletion collectively impart a heterogeneous distribution pattern to phytoplankton in the surface waters of the Strait of Georgia. Mean annual production varies from lows of 150 g C∙m−2 in Fraser River plume to highs of over 500 g C∙m−2 in sheltered boundary waters of inlets. Recent increases in ammonia and nitrate from land drainage and domestic sewage, mainly through the Fraser River, are related to increases in phytoplankton standing stocks in the Strait. Key words: phytoplankton, primary production, eutrophication, coastal marine, phytoplankton distribution and succession, chlorophyll a, pelagic

Phytoplankton Primary Production and Light Attenuation Responses to the Experimental Acidification of a Small Canadian Shield Lake

1987 ◽  
Vol 44 (S1) ◽  
pp. s83-s90 ◽  
Author(s):  
J. A. Shearer ◽  
E. J. Fee ◽  
E. R. DeBruyn ◽  
D. R. DeClercq
Keyword(s):  
Primary Production ◽  
Light Attenuation ◽  
Distinct Pattern ◽  
Phytoplankton Production ◽  
Phytoplankton Primary Production ◽  
Apparent Reduction ◽  
Production Increase ◽  
Pre Treatment ◽  
Experimental Acidification ◽  
Ph Level

Phytoplankton primary production and light attenuation were monitored over a 10-yr period in Lake 223, a small, softwater, shield, lake. After 2 yr with no treatment, the lake was treated for 8 yr with sulfuric acid to decrease the epilimnetic pH from about 6.7 to 5.0. Primary production, integrated over time and depth, varied considerably during the 2 pre-treatment years. However, it increased steadily during the first 6 yr of treatment, with a total increase of more than 250%. This production increase was coincident with a decrease in epilimnetic light attenuation. After the 6th year of treatment, the production of the lake decreased although the pH level was held relatively constant during this period. Nearby control lakes tended to show a similar, though less distinct, pattern during this 10-yr period. Thus, it is difficult to separate the effects of acidification from long-term natural variation. However, there was no apparent reduction in community phytoplankton production as a consequence of the acidification and the hypothesis that acidification causes oligotrophication was not supported.

scholarly journals Phytoplankton primary production in the lake Kenon (Zabaykalsky krai, Russia)

2021 ◽  
Vol 21 (2) ◽  
pp. 228-234
Author(s):  
Gazhit Ts. Tsybekmitova ◽  
Keyword(s):  
Primary Production ◽  
Thermal Power ◽  
Chemical Species ◽  
Field Measurements ◽  
Current Status ◽  
Current Evidence ◽  
Phytoplankton Primary Production ◽  
Dark Bottle ◽  
Long Term Study ◽  
Lake Kenon

Located in the Amur watershed, Lake Kenon is an urban reservoir that hosts recreational and commercial fishery activity. The current status of the lake is connected with the Chita Thermal Power Plant No 1, the basin’s human population, and the density of railways as well as highways within the basin. From the start of the thermal power plant’s operation, the reservoir’s ion composition significantly changed from largely sodium and bicarbonate species to sulfate, bicarbonate, chloride, sodium, calcium, and magnesium chemical species. Additionally, heavy metals have been accumulating in Kenon’s sediment. The results presented in this article are based on field measurements and comparative analysis with previous studies. Primary production was calculated using a light-dark bottle method. During the study period, current evidence corroborated previous investigations that respiration and decomposition rates generally tend to exceed photosynthesis rates. As noted in June 2015, in the cent of the lake where complete mixing occurs, primary production as well as respiration decreases with depth in the water column. With increased warming since August 2015, primary production exceeded respiration in upper layers. Considering the lake’s relatively small area for thermal fluxes (10% of the lake’s surface area), production-respiration processes are within Lake Kenon’s ecological capacities. The observed photosynthesis-respiration ratios from long-term study suggest that the system is resilient to the current anthropogenic load.

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