scholarly journals Species-specific responses of a cyanobacteriadominated phytoplankton community to artificial nutrient limitation in the Baltic Sea

2007 ◽  
Vol 336 ◽  
pp. 15-27 ◽  
Author(s):  
K Kangro ◽  
K Olli ◽  
T Tamminen ◽  
R Lignell
Keyword(s):  
Baltic Sea ◽  
Nutrient Limitation ◽  
Phytoplankton Community ◽  
The Baltic Sea ◽  
The Baltic ◽  
Species Specific

scholarly journals Seasonality of Coastal Picophytoplankton Growth, Nutrient Limitation, and Biomass Contribution

2021 ◽  
Vol 12 ◽  
Author(s):  
Javier Alegria Zufia ◽  
Hanna Farnelid ◽  
Catherine Legrand
Keyword(s):  
Baltic Sea ◽  
Nutrient Limitation ◽  
Seasonal Dynamics ◽  
Phytoplankton Biomass ◽  
Phytoplankton Community ◽  
The Baltic Sea ◽  
Coastal Site ◽  
Total Phytoplankton ◽  
Temperature Ranges ◽  
The Baltic

Picophytoplankton in the Baltic Sea includes the simplest unicellular cyanoprokaryotes (Synechococcus/Cyanobium) and photosynthetic picoeukaryotes (PPE). Picophytoplankton are thought to be a key component of the phytoplankton community, but their seasonal dynamics and relationships with nutrients and temperature are largely unknown. We monitored pico- and larger phytoplankton at a coastal site in Kalmar Sound (K-Station) weekly during 2018. Among the cyanoprokaryotes, phycoerythrin-rich picocyanobacteria (PE-rich) dominated in spring and summer while phycocyanin-rich picocyanobacteria (PC-rich) dominated during autumn. PE-rich and PC-rich abundances peaked during summer (1.1 × 105 and 2.0 × 105 cells mL–1) while PPE reached highest abundances in spring (1.1 × 105 cells mL–1). PPE was the main contributor to the total phytoplankton biomass (up to 73%). To assess nutrient limitation, bioassays with combinations of nitrogen (NO3 or NH4) and phosphorus additions were performed. PE-rich and PC-rich growth was mainly limited by nitrogen, with a preference for NH4 at >15°C. The three groups had distinct seasonal dynamics and different temperature ranges: 10°C and 17–19°C for PE-rich, 13–16°C for PC-rich and 11–15°C for PPE. We conclude that picophytoplankton contribute significantly to the carbon cycle in the coastal Baltic Sea and underscore the importance of investigating populations to assess the consequences of the combination of high temperature and NH4 in a future climate.

scholarly journals Seasonality of Coastal Picophytoplankton Growth, Nutrient Limitation and Biomass Contribution

2021 ◽  
Author(s):  
Javier Alegria Zufia ◽  
Hanna Farnelid ◽  
Catherine Legrand
Keyword(s):  
High Temperature ◽  
Baltic Sea ◽  
Nutrient Limitation ◽  
Seasonal Dynamics ◽  
Phytoplankton Biomass ◽  
Phytoplankton Community ◽  
The Baltic Sea ◽  
Coastal Site ◽  
Total Phytoplankton ◽  
The Baltic

Abstract Picophytoplankton in the Baltic Sea includes picocyanobacteria (Synechococcus/Cyanobium) and photosynthetic picoeukaryotes (PPE). Picophytoplankton are thought to be a key component of the phytoplankton community but their seasonal dynamics and relationships with nutrients and temperature are largely unknown. We monitored pico- and larger phytoplankton at a coastal site in Kalmar Sound (K-Station) weekly during 2018. Among the picocyanobacteria, phycoerythrin-rich Synechococcus (PE-rich) dominated in spring and summer while phycocyanin-rich Synechococcus (PC-rich) dominated during autumn. PE-rich and PC-rich abundances peaked during summer (1.1x105 and 2.0x105 cells mL− 1) while PPE reached highest abundances in spring (1.1x105 cells mL− 1). PPE was the main contributor to the total phytoplankton biomass (3–73%). To assess nutrient limitation, bioassays with combinations of nitrogen (NO3 or NH4) and phosphorus additions were performed. PE-rich and PC-rich growth was mainly limited by nitrogen, with a preference for NH4 at 15–19°C. The three groups had distinct seasonal dynamics and optimal temperatures for growth were 10°C and 17–19°C for PE-rich, 13–16°C for PC-rich and 11–15°C for PPE. We conclude that picophytoplankton contribute significantly to the carbon cycle in the coastal Baltic Sea and underscore the importance of investigating functional groups to assess the consequences of the combination of high temperature and NH4 in a future climate.

scholarly journals Genetic biodiversity in the Baltic Sea: species-specific patterns challenge management

2013 ◽  
Vol 22 (13-14) ◽  
pp. 3045-3065 ◽  
Author(s):  
Lovisa Wennerström ◽  
Linda Laikre ◽  
Nils Ryman ◽  
Fred M. Utter ◽  
Nurul Izza Ab Ghani ◽  
...  
Keyword(s):  
Baltic Sea ◽  
The Baltic Sea ◽  
Genetic Biodiversity ◽  
The Baltic ◽  
Species Specific

scholarly journals Allochthonous matter: an important factor shaping the phytoplankton community in the Baltic Sea

2016 ◽  
Vol 39 (1) ◽  
pp. 23-34 ◽  
Author(s):  
J. Paczkowska ◽  
OF Rowe ◽  
L. Schlüter ◽  
C. Legrand ◽  
B. Karlson ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Phytoplankton Community ◽  
The Baltic Sea ◽  
The Baltic

Species-specific detection and quantification of environmental DNA from marine fishes in the Baltic Sea

2019 ◽  
Vol 510 ◽  
pp. 31-45 ◽  
Author(s):  
Steen Wilhelm Knudsen ◽  
Rasmus Bach Ebert ◽  
Martin Hesselsøe ◽  
Franziska Kuntke ◽  
Jakob Hassingboe ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Environmental Dna ◽  
Marine Fishes ◽  
Specific Detection ◽  
The Baltic Sea ◽  
The Baltic ◽  
Species Specific ◽  
Detection And Quantification

Utilization of discards and offal from commercial fisheries by seabirds in the Baltic Sea

2003 ◽  
Vol 60 (5) ◽  
pp. 980-989 ◽  
Author(s):  
Stefan Garthe ◽  
Birgit Scherp
Keyword(s):  
Baltic Sea ◽  
Bird Species ◽  
Herring Gull ◽  
The Baltic Sea ◽  
Blue Mussels ◽  
Herring Gulls ◽  
Diet Assessment ◽  
Widespread Phenomenon ◽  
The Baltic ◽  
Species Specific

Abstract The distribution and abundance of scavenging seabirds and their utilization of discards and offal between June and December 1998 were studied in the western Baltic Sea. Herring gulls were clearly the most numerous scavenging species in all areas and all seasons, followed by great black-backed gulls, lesser black-backed gulls and mew gulls. High percentages of discarded gadoids (cod, whiting), clupeids (herring, sprat), scad, rockling and offal were consumed by seabirds during experimental discarding on fishing boats, whereas the percentages of flatfish consumed were extremely low. There was a clear effect of cod length on total and species-specific consumption by birds but this pattern was hardly evident for clupeids or dab. By combining official discard and offal statistics and our experimental discarding, we estimate that 6500 t of fish discards and 16 000 t of offal were consumed annually by seabirds in the Baltic Sea. Bivalves, especially blue mussels Mytilus edulis, were the most frequently represented food item in herring gull pellets. Fish identified in the pellets consisted mainly of gadoids, in particular cod. The proportion of discards in herring gull pellets was on average 1.6% (range: 0–4.5%) at Laboe and 17.5% at Warnemünde (range: 9.4–25.5%), but pellets bias diet assessment as offal and other soft prey (including clupeids) will be under-represented. Scavenging on discards and offal is a widespread phenomenon in the Baltic Sea as it is in other shelf areas of Europe, but the number of bird species involved is generally lower and strongly biased towards gulls, especially herring gulls.

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