A technique for subsampling an abundant taxon while completely sorting other taxa1

Sherman, Kevin M.; Meeter, Duane A.; Reidenauer, Jeffrey A.

doi:10.4319/lo.1984.29.2.0433

Cited by 13 publications

(4 citation statements)

References 7 publications

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“…Adult harpacticoid copepods were identified to species. Catch-tube samples which contained more than 500 harpacticoids were subsampled to facilitate taxonomic identification using the procedure of Sherman et al (1984). More than 15 000 adult harpacticoids were identified.…”

Section: Methodsmentioning

confidence: 99%

Diel patterns of active vertical migration in seagrass meiofauna

Walters¹,

Bell²

1986

Mar. Ecol. Prog. Ser.

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Patterns of acbve vertical migration exhibited by sediment-associated meiofauna were examlned in a subtropical seagrass meadow. Total numbers, species composition and percentage of sediment meiofauna found to migrate were examined during two 24 h studes. Large numbers (>20 000h-' m-2) of harpacticoid copepods representing a substantial proporbon (>50 "10) of the total benthic harpacticoid community migrated from the sediment into the water column. Nineteen of 36 harpacticoid species identified migrated actively. Migration was greatest during nighttime. Results indicate the importance of vertical migration to benthic-pelagic interactions in shallow seagrass environments.

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Section: Methodsmentioning

confidence: 99%

Diel patterns of active vertical migration in seagrass meiofauna

Walters¹,

Bell²

1986

Mar. Ecol. Prog. Ser.

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“…If densities of abundant taxa (e.g. nematodes) limit sorting because of the large area sampled, the technique of Sherman et al (1984) allows subsampling while sorting. Additionally the sample can be subdivided as the sampling device enters the sediment (a type of vegematic subcorer: Jumars 197 5).…”

Section: Incmentioning

confidence: 99%

Laboratory studies on core sampling with application to subtidal meiobenthos collection

Fleeger

1988

Limnology & Oceanography

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Three aspects of subtidal meiobenthic sampling were examined through laboratory simulation experiments with Sephadex gel beads as an epibenthic meiofaunal mimic. Results indicate that corer diameter (i.d. from 2.6 to 10.5 cm) does not affect sampling efficiency if slow corer penetration takes place. Disturbance in cores mimicking conditions during retrieval by a diver resulted in a bias when these cores were subsampled after collection. Such effects may also be present in larger (e.g. box) corers when a distinct flocculent layer is present. A dramatic effect on vertical profile was found when cores were preserved by fast‐freezing. Cores should be of a size that can be analyzed in their entirety, subsampled as a homogenate, or subsampled with a device in place as the corer enters the sediment.

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“…AI1 material retained on a 63 pm sieve was sorted under a stereomicroscope. In 1985 and 1986, samples were sorted in ruled trays and all fauna enumerated; in 1987 and 1988 the methods of Sherman et al (1984) were employed to subsample nematodes while completely sorting rarer taxa. Major taxa, except Foraminifera, were enumerated.…”

Section: Methodsmentioning

confidence: 99%

Meiofaunal responses to sedimentation from an Alaskan spring bloom. I Major taxa

Fleeger¹,

Shirley²,

Ziemann³

1989

Mar. Ecol. Prog. Ser.

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Metazoan meiofaunal comnlunity dynamics and spring phytoplankton bloom sedimentation rates were measured concurrently in Auke Bay, Alaska. from 1985 to 1988. We test the null hypothesis that recruitment and density maxima are unrelated to sedimentation events. Springtime chlorophyll a sedimentation was predictable and episodic, occurring annually at peak rates during midMay at 35 m; carbon sed~mentation was continuous through the spring. Cumulative sedimentation varied from year to year, ranging from lowest to highest by a factor of 2. At a 30 m station, seasonal variation in major taxon density was not identifiable, however interannual variations in meiofaunal densities &d occur No consistent relationship between meiofaunal abundances and spring chl a or carbon sedimentation was found, i.e. years with the highest or lowest nematode and harpacticoid abundances did not correspond to years with the highest or lowest values for sedimentation. Other factors must regulate the interannual variation in meiofauna, at least over the range of values for sedimentation in Auke Bay.

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A technique for subsampling an abundant taxon while completely sorting other taxa1

Cited by 13 publications

References 7 publications

Diel patterns of active vertical migration in seagrass meiofauna

Diel patterns of active vertical migration in seagrass meiofauna

Laboratory studies on core sampling with application to subtidal meiobenthos collection

Meiofaunal responses to sedimentation from an Alaskan spring bloom. I Major taxa

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