Distribution, standing stock, growth, mortality and production of Strongylocentrotus pallidus (sea urchin) in the northern Barents Sea.Entry ID: ArcOD_2007B3
Abstract: The regular sea urchin, Strongylocentrotus pallidus, (G.O.Sars, 1871) is a widespread epibenthic species in high-Arctic waters. However, little is known about its distribution, standing stock, population dynamics and production. In the northern Barents Sea, S. pallidus was recorded on seabed still photographs at 10 out of 11 stations in water depths of 80-300 m. Mean abundances along photographic ... transects of 150-300 m length ranged between <0.1 and 14.7 ind. m-2 yielding a grand average of 3.6 ind. m-2. The small-scale distribution along the transects was patchy, with densities varying from nil to an overall maximum of 25.5 ind. m-2, and exhibited a significant relation to the number of stones present. Sea urchin test diameters, measured on scaled photographs, extended from 7 to 90 mm. Median values at single stations varied from 14 to 46 mm, showing a significant inverse relationship to water depth. Biomass, estimated by combining photographic abundances, size frequencies and a size-mass function established with trawled specimens, ranged between <0.1 and 3.0 g ash-free dry mass m-2, averaging about 1.0 g ash-free dry mass m-2. An analysis of skeletal growth bands in genital plates was carried out with 143 trawled individuals ranging in test diameter (D) from 4 to 48 mm. Assuming these bands to represent annual growth marks, the ages of the specimens analysed ranged between 3 and 42 years. A von Bertalanffy function was fitted to size-at-age data to model individual growth pattern (D??? = 102.3 mm, k = 0.011 year-1, t0 = 0.633 year). The annual mortality rate Z of the population in the northern Barents Sea was estimated from a size-converted catch curve to be 0.08 year-1. Applying the weight-specific growth rate method, the average P/B ratio and the mean annual production of this population were estimated as 0.07 year-1 and 0.076 g AFDM m-2 year-1, respectively. In conclusion, S. pallidus is characterized by slow growth, low mortality, high longevity and low productivity. Because of its relatively high biomass, it is considered to contribute significantly to total benthic standing stock and carbon flux in the study area.
Purpose: Describe distribution, standing stock, population dynamics and production of Strongylocentrotus pallidus in the northern Barents Sea.
Data Set Citation
Dataset Originator/Creator: Bodil Bluhm
Dataset Title: Distribution, standing stock, growth, mortality and production of Strongylocentrotus pallidus (sea urchin) in the northern Barents Sea.
Dataset Series Name: Polar Biology
Dataset Release Date: 1998
Dataset Publisher: Springer
Issue Identification: 20:325-334
Data Presentation Form: documentOnline Resource: http://ak.aoos.org/ArcOD/data_table.php
This data set description is a member of a collection. The collection is described in
Start Date: 1991-07-13Stop Date: 1991-07-24
Quality ATTRIBUTE ACCURACY REPORT: Specimens smaller than 1mm in diameter could not be resolved from the photographs.
LOGICAL CONSISTENCY REPORT: The same procedure was used at all sites; findings should be consistent.
COMPLETENESS REPORT: Only S. pallidus was identified from photographs, other taxa were ignored. Minimum size detectable from photographs was 1mm.
... HORIZONTAL POSITIONAL ACCURACY REPORT: GPS locations taken from ship log. Latitude longitude by: degrees, minutes with two digits
PROCESS DESCRIPTION: Abundance, body size and biomass: Photographs were analyzed for density, small-scale distribution pattern and body size- frequencies. Small-scale distribution was parameterized with the patchiness index suggested by Lloyd (1967). Station mean biomass was computed by combining station specific mean abundances and size frequencies. Body size-mass function was established by drying preserved trawled urchins for 24 h at 60??C and 24 h burning at 520??C in a muffle furnace. Hard substrate (stones) information was qualitatively recorded (absent, few, some, many, cover most of seabed).
When not provided by authors, taxonomic information was completed using ITIS (e.g. in many cases for ORDER).
Access Constraints None.
Use Constraints Do not redistribute to third parties.
Contacting data owners is recommended for valid interpretation of these data.
ArcOD shall not be held liable for improper or incorrect use of the data described and/or contained herein. These data and related graphics (i.e. GIF or JPG format files) are not legal documents and are not intended to be used as such. The information ... contained in these data is dynamic and may change over time. The data are not better than the original sources from which they were derived. It is the responsibility of the data user to use the data appropriately and consistent within the limitations of geospatial data in general and these data in particular. The related graphics are intended to aid the data user in acquiring relevant data; it is not appropriate to use the related graphics as data. ArcOD gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. It is strongly recommended that these data are directly acquired from an ArcOD server and not indirectly through other sources which may have changed the data in some way. Although these data have been processed successfully on computer systems at ArcOD, no warranty expressed or implied is made regarding the utility of the data on other systems for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data.
Data Set Progress
Distribution Format: EXCEL
Email: bluhm at ims.uaf.edu
IMS/SFOS University of Alaska Fairbanks, P.O. Box 757220
Province or State: Alaska
Postal Code: 99775-7220
Role: TECHNICAL CONTACT
Fax: +01-907 4746967
Email: fhuettmann at alaska.edu
419 Irving I, PO Box 757000
Province or State: AK
Postal Code: 99775-7000
Role: DIF AUTHOR
Email: alicia.m.aleman at nasa.gov
Goddard Space Flight Center Code 610.2
Province or State: MD
Postal Code: 20771
Dieter Piepenburg On the composition of the benthic fauna of the western Fram Strait; Doctoral Thesis
For an example of specimen databases, use and applications: Graham, C. H., S. Ferrier, F. Huettmann, C. Moritz and A.T. Peterson 2004
New developments in museum-based informatics and applications in biodiversity analysis. Trends in Ecology and Evolution 19:497-503 Polar ... Biology 28: 218-231
Bluhm,B; Piepenburg, D; von Juterzenka, K 1998 Distribution, standing stock, growth, mortality and production of Strongylocentrotus pallidus (Echinodermata: Echinoidea) in the northern Barents Sea. Polar Biology 20:325-334
Bluhm, B. 1997; Zur Oekologie der regulaeren Seeigel im noerdlichen Barentsmeer. Master Thesis Institute of Polar Ecology, University of Kiel, Kiel, Germany University of Kiel
Dieter Piepenburg, Michael Schmid 1996 Brittle star fauna (Echinodermata: Ophiuroidea) of the Arctic northwest Barents Sea: composition, abundance, biomass and spatial distribution. Polar Biology 16:383-392
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Creation and Review Dates
DIF Creation Date: 2007-05-19
Last DIF Revision Date: 2010-02-16