<div><p>Zooplankton were collected from two vertical hauls using a 0.75 meter ring net with 222 um mesh with 5:1 ratio of wire out to depth during the upcast with the winch going 40 meters/minute.</p>
<p>A flowmeter at the mouth of the ring net recorded the start and end of each cast.</p>
<p>The collection in the cod end of the net was transferred to 500 ml jars and the samples were buffered in a 4% formaldehyde solution.</p></div>
Abundance and composition of the zooplankton community at the Darling Marine Center Monitoring stations - Columnar view
<div><p>This dataset describes the abundance and composition of the zooplankton community at two Darling Marine Center monitoring stations. Sampling was biweekly from 2008 (one in 2007) to 2011.</p>
<p>This display is the columnar view with each species having its own column of abundance numbers.</p>
<p>A second display has all the species in one column and the abundances in another. The data are identical, just displayed differently for different views and purposes. <a href="https://www.bco-dmo.org/dataset/557360" target="_blank">Second view</a></p></div>
Zoo_DMC_2007-2011_Columns
<div><p>Back in the lab, the zooplankton samples were split in half using Folsom Plankton Splitter. Half of the sample was archived for abundance analysis of meso-zooplankton species. Target N of organisms counted was 200. All copepods were identified to species and staged. All other animals were identified to family or to species where possible. The <em>Calanus finmarchicus</em> target N was 75-100 where few stages were present or 150-200 where many stages were present.</p>
<p>The remaining half of the sample was rinsed of its preservative by sieving through a nitex mesh filter made of the net used in sampling. The mesh filters were pre-weighed for subtraction from the sample material weight.</p>
<p>The sample was then rinsed with 100 ml of freshwater to remove salts and placed in a clean, pre-weighed petri dish. It was then placed in a 65C oven (Precision Econotherm Lab Oven) for 48 hours for drying</p>
<p>Dried samples are then weighed to the nearest 0.001 gram on PG403-S Delta Range Mettler Toledo precision scale</p>
<p>Zooplankton abundance (#/m2) was calculated by first determining the #/m3 and then multiplying by net depth. The abundance (#/m3) = (the count *dilution factor/ split / volume filtered). Dilution factor = the dilution/aliquot; volume filtered = ring net mouth area (m2)* distance (M); distance is measured by the flowmeter.</p></div>
554785
Zoo_DMC_2007-2011_Columns
2015-03-31T13:48:31-04:00
2015-03-31T13:48:31-04:00
2023-07-07T16:10:26-04:00
urn:bcodmo:dataset:554785
Abundance and composition in columnar view of the zooplankton community at the Darling Marine Center Monitoring stations from R/V Ira C. in the Damariscotta Estuary; Maine coast from 2007-2011 (DMC project)
false
Runge, J. A. (2015) Abundance and composition in columnar view of the zooplankton community at the Darling Marine Center Monitoring stations from R/V Ira C. in the Damariscotta Estuary; Maine coast from 2007-2011 (DMC project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version working) Version Date 2015-03-31 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/554785 [access date]
false
working
false
2015-03-31
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