scholarly journals Management of the Falkland Islands Multispecies Ray Fishery: Is Species-specific Management Required?

2004 ◽  
Vol 35 ◽  
pp. 309-324 ◽  
Author(s):  
R C Wakeford ◽  
D J Agnew ◽  
D A J Middleton ◽  
J H W Pompert ◽  
V V Laptikhovsky
Keyword(s):  
Falkland Islands ◽  
Species Specific ◽  
Specific Management

A 20-year tree liberation experiment in the Amazon: Highlights for diameter growth rates and species-specific management

2019 ◽  
Vol 453 ◽  
pp. 117584 ◽  
Author(s):  
Hassan C. David ◽  
João O.P. Carvalho ◽  
Iran Paz Pires ◽  
Luana S. Santos ◽  
Eglison S. Barbosa ◽  
...  
Keyword(s):  
Growth Rates ◽  
Diameter Growth ◽  
Species Specific ◽  
Specific Management

scholarly journals In situ determination of cellular DMSP and pigment quotas in a Prorocentrum minimum bloom near the Falkland Islands

2014 ◽  
Vol 5 (2) ◽  
pp. 123 ◽  
Author(s):  
Tyler Cyronak ◽  
Erin O’Reilly ◽  
Peter A. Lee ◽  
Giacomo R. DiTullio
Keyword(s):  
Prorocentrum Minimum ◽  
Marine Phytoplankton ◽  
Individual Species ◽  
Falkland Islands ◽  
Growth Stages ◽  
Wide Scale ◽  
Biochemical Analyses ◽  
Species Specific ◽  
The Impact

Marine phytoplankton play critical roles in the biogeochemistry of open and coastal oceans. However, the impact that individual species have on an ecosystem-wide scale can strongly depend on the production of cellular compounds, especially those that are climatically active such as dimethylsulfide (DMS). Herein, we use sorting flow cytometry to separate a distinct phytoplankton population from four samples taken along the Patagonian shelf near the Falkland Islands. Morphological, genetic, and biochemical analyses demonstrated that three of the sorted samples were dominated by a bloom of the dinoflagellate Prorocentrum minimum. Cellular quotas of the DMS-precursor dimethylsulfoniopropionate (DMSP) ranged from 1.23–4.11 pg cell−1 in the same population at different sampling stations. Causes of this variability may be due to different growth stages of the P. minimum bloom or changes in other environmental variables. Overall, in situ intracellular DMSP concentrations were lower than what would be expected based on previous, culture-based measurements. We demonstrate the difficulties inherent in sorting individual phytoplankton species from natural samples in order to determine in situ species-specific cellular quotas of important biogeochemical compounds.

Electron Microscopy in the Study of Natural Phytoplankton Assemblages

1985 ◽  
Vol 43 ◽  
pp. 620-623
Author(s):  
Linda Sicko-Goad
Keyword(s):  
Electron Microscopy ◽  
Aquatic Environment ◽  
Size Range ◽  
Physical Parameters ◽  
Specific Information ◽  
Phytoplankton Assemblages ◽  
Phytoplankton Productivity ◽  
Ecosystem Effects ◽  
Time Of Year ◽  
Species Specific

Although the use of electron microscopy and its varied methodologies is not usually associated with ecological studies, the types of species specific information that can be generated by these techniques are often quite useful in predicting long-term ecosystem effects. The utility of these techniques is especially apparent when one considers both the size range of particles found in the aquatic environment and the complexity of the phytoplankton assemblages.The size range and character of organisms found in the aquatic environment are dependent upon a variety of physical parameters that include sampling depth, location, and time of year. In the winter months, all the Laurentian Great Lakes are uniformly mixed and homothermous in the range of 1.1 to 1.7°C. During this time phytoplankton productivity is quite low.

64: Rapid, Species-Specific Detection of Uropathogens from Clinical Urine Specimens Using an Electrochemical Microsensor Array

2005 ◽  
Vol 173 (4S) ◽  
pp. 18-18
Author(s):  
Joseph C. Liao ◽  
Mitra Mastali ◽  
David A. Haake ◽  
Bernard M. Churchill
Keyword(s):  
Specific Detection ◽  
Species Specific ◽  
Urine Specimens
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