Impact of short-term warming on seasonal variations in bacterial growth, grazing, and viral lysis in coastal waters of Taiwan

2016 ◽  
Vol 76 (3) ◽  
pp. 195-205 ◽  
Author(s):  
AY Tsai ◽  
GC Gong ◽  
W Shiau
Keyword(s):  
Bacterial Growth ◽  
Seasonal Variations ◽  
Coastal Waters ◽  
Short Term ◽  
Viral Lysis

scholarly journals Viral lysis and nanoflagellate grazing as factors controlling diel variations of Synechococcus spp. summer abundance in coastal waters of Taiwan

2012 ◽  
Vol 66 (2) ◽  
pp. 159-167 ◽  
Author(s):  
AY Tsai ◽  
GC Gong ◽  
RW Sanders ◽  
KP Chiang ◽  
JK Huang ◽  
...  
Keyword(s):  
Coastal Waters ◽  
Viral Lysis ◽  
Diel Variations

scholarly journals Dynamic of decapod crustacean larvae on the entrance of Guanabara bay

2002 ◽  
Vol 45 (4) ◽  
pp. 491-498 ◽  
Author(s):  
Lohengrin Dias de Almeida Fernandes ◽  
Sérgio Luiz Costa Bonecker ◽  
Jean Louis Valentin
Keyword(s):  
Reproductive Cycle ◽  
Seasonal Variations ◽  
Coastal Waters ◽  
Decapod Crustacean ◽  
Late Summer ◽  
Late Winter ◽  
Guanabara Bay ◽  
Tidal Cycles ◽  
Decapod Larvae

In the present study, we observed seasonal variations in the density of decapod larvae as well as changes in density related to diurnal and tidal cycles. Among the decapod larvae collected, portunids and grapsids were the most abundant, especially during nocturnal ebb tides and near the surface. The same results were obtained in late winter (September) and late summer (March). These results demonstrated a flow of decapod larvae from Guanabara Bay to adjacent coastal waters. Luciferid (Lucifer faxoni) was the only group with high densities during flood tides and we suggest this is an evidence of L. faxoni larvae entering Guanabara Bay in late winter. Probably these changes in distribution of Lucifer faxoni among winter and summer were related to reproductive cycle in the bay. For the portunids, grapsids and ocypodids, a similar dispersion strategy was observed towards adjacent coastal waters in the surface during nocturnal ebb tides.

Short-term changes of community structure of microbenthic invertebrates in the coastal waters Jeju Island, Korea from 2013 to 2015

2016 ◽  
Vol 32 (4) ◽  
pp. 297-328 ◽  
Author(s):  
Jun-Cheol Ko ◽  
Bo-Yeon Kim ◽  
Myoung-Ho Sonh ◽  
Woon-Chan Jo ◽  
Kwan-Cheol Lee
Keyword(s):  
Community Structure ◽  
Coastal Waters ◽  
Jeju Island ◽  
Short Term

scholarly journals Temporal Variation of Bacterial Respiration and Growth Efficiency in Tropical Coastal Waters

2009 ◽  
Vol 75 (24) ◽  
pp. 7594-7601 ◽  
Author(s):  
Choon Weng Lee ◽  
Chui Wei Bong ◽  
Yii Siang Hii
Keyword(s):  
Temporal Variation ◽  
Bacterial Growth ◽  
Coastal Waters ◽  
Bacterial Production ◽  
Growth Efficiency ◽  
Bacterial Growth Efficiency ◽  
Bacterial Respiration ◽  
Substrate Quality ◽  
Carbon Demand ◽  
Net Heterotrophy

ABSTRACT We investigated the temporal variation of bacterial production, respiration, and growth efficiency in the tropical coastal waters of Peninsular Malaysia. We selected five stations including two estuaries and three coastal water stations. The temperature was relatively stable (averaging around 29.5°C), whereas salinity was more variable in the estuaries. We also measured dissolved organic carbon and nitrogen (DOC and DON, respectively) concentrations. DOC generally ranged from 100 to 900 μM, whereas DON ranged from 0 to 32 μM. Bacterial respiration ranged from 0.5 to 3.2 μM O2 h−1, whereas bacterial production ranged from 0.05 to 0.51 μM C h−1. Bacterial growth efficiency was calculated as bacterial production/(bacterial production + respiration), and ranged from 0.02 to 0.40. Multiple correlation analyses revealed that bacterial production was dependent upon primary production (r2 = 0.169, df = 31, and P < 0.02) whereas bacterial respiration was dependent upon both substrate quality (i.e., DOC/DON ratio) (r2 = 0.137, df = 32, and P = 0.03) and temperature (r2 = 0.113, df = 36, and P = 0.04). Substrate quality was the most important factor (r2 = 0.119, df = 33, and P = 0.04) for the regulation of bacterial growth efficiency. Using bacterial growth efficiency values, the average bacterial carbon demand calculated was from 5.30 to 11.28 μM C h−1. When the bacterial carbon demand was compared with primary productivity, we found that net heterotrophy was established at only two stations. The ratio of bacterial carbon demand to net primary production correlated significantly with bacterial growth efficiency (r2 = 0.341, df = 35, and P < 0.001). From nonlinear regression analysis, we found that net heterotrophy was established when bacterial growth efficiency was <0.08. Our study showed the extent of net heterotrophy in these waters and illustrated the importance of heterotrophic microbial processes in coastal aquatic food webs.

Phytoplankton species successions and their hydrological environment at a coastal station off Sydney

1986 ◽  
Vol 37 (3) ◽  
pp. 361 ◽  
Author(s):  
GM Hallegraeff ◽  
DD Reid
Keyword(s):  
Coastal Waters ◽  
Early Summer ◽  
Phytoplankton Species ◽  
Species Occurrence ◽  
Short Term ◽  
Coastal Station ◽  
Tropical Water ◽  
Diatom Blooms ◽  
Autumn And Winter ◽  
Water Species

Phytoplankton species occurrence was studied during 1978-1981 at a coastal station off Sydney and succession patterns were sought using polythetic agglomerative classification analysis. Three major phytoplankton categories were distinguished: (1) a large group of species (including most nanoplankton), which were present throughout the year; (2) a group of diatom species, which bloomed following episodic nutrient enrichments in spring, early summer, autumn and winter; (3) a group of warm-water species (e.g. Trichodesmium), which were associated with admixture of tropical water masses. Gross features of the phytoplankton cycle in these waters are related to the erratic flow pattern of the East Australian Current. However, clear short-term (4-14 weeks) species successions were evident within the spring and summer diatom blooms. These began with small diatoms (Asterionella, Leptocylindrus, Skeletonema, Thalassiosira) followed first by large diatoms (Detonula, Rhizosolenia, Stephanopyxis) and then by large dinoflagellates (Ceratium, Protoperidinium). This sequence is identical to that observed in coastal waters of other parts of the world. A phytoplankton checklist (280 species) for Sydney coastal waters is included as an appendix.

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