Water content, organic content, and carbon and nitrogen composition of medusae from the northeast Pacific

Larson, Robert J.

doi:10.1016/0022-0981(86)90231-5

Cited by 174 publications

(127 citation statements)

References 20 publications

Supporting

Mentioning

110

Contrasting

Unclassified

Order By: Relevance

“…C per 100 m 3 , to make them comparable with previous estimates of medusa biomass (Hay et al, 1990). Identification of gelatinous taxa is based on Mayer (1912), Kramp (1961), Alvariño (1981), Alvariño et al (1990), Esnal (1981), Larson (1986b), Harbison (1986), Mianzan (1986a,b;1989a; and .…”

Section: Methodsmentioning

confidence: 81%

Environmental patterns and biomass distribution of gelatinous macrozooplankton. Three study cases in the South-western Atlantic Ocean

Mianzán¹,

Guerrero²

2000

Sci. Mar.

View full text Add to dashboard Cite

Section: Methodsmentioning

confidence: 81%

Environmental patterns and biomass distribution of gelatinous macrozooplankton. Three study cases in the South-western Atlantic Ocean

Mianzán¹,

Guerrero²

2000

Sci. Mar.

View full text Add to dashboard Cite

“…Biomass was subsequently transformed to carbon using a conversion factor of 0.25, following Larson (1986).…”

Section: Calculation Of Dry Weight and Carbon Biomass From Wet Weightmentioning

confidence: 99%

The global distribution of pteropods and their contribution to carbonate and carbon biomass in the modern ocean

Bednaršek

Možina

Vogt³

et al. 2012

Earth Syst. Sci. Data

149

140

View full text Add to dashboard Cite

Abstract. Pteropods are a group of holoplanktonic gastropods for which global biomass distribution patterns remain poorly described. The aim of this study was to collect and synthesise existing pteropod (Gymnosomata, Thecosomata and Pseudothecosomata) abundance and biomass data, in order to evaluate the global distribution of pteropod carbon biomass, with a particular emphasis on temporal and spatial patterns. We collected 25 939 data points from several online databases and 41 scientific articles. These data points corresponded to observations from 15 134 stations, where 93 % of observations were of shelled pteropods (Thecosomata) and 7 % of non-shelled pteropods (Gymnosomata). The biomass data has been gridded onto a 360 × 180• grid, with a vertical resolution of 33 depth levels. Both the raw data file and the gridded data in NetCDF format can be downloaded from PANGAEA, doi:10.1594/PANGAEA.777387. Data were collected between 1950-2010, with sampling depths ranging from 0-2000 m. Pteropod biomass data was either extracted directly or derived through converting abundance to biomass with pteropod-specific length to carbon biomass conversion algorithms. In the Northern Hemisphere (NH), the data were distributed quite evenly throughout the year, whereas sampling in the Southern Hemisphere (SH) was biased towards winter and summer values. 86 % of all biomass values were located in the NH, most (37 %) within the latitudinal band of 30-60• N. The range of global biomass values spanned over four orders of magnitude, with mean and median (non-zero) biomass values of 4.6 mg C m −3 (SD = 62.5) and 0.015 mg C m −3 , respectively. The highest mean biomass was located in the SH within the 70-80• S latitudinal band (39.71 mg C m −3 , SD = 93.00), while the highest median biomass was in the NH, between 40-50• S (0.06 mg C m −3 , SD = 79.94). Shelled pteropods constituted a mean global carbonate biomass of 23.17 mg CaCO 3 m −3 (based on non-zero records). Total biomass values were lowest in the equatorial regions and equally high at both poles. Pteropods were found at least to depths of 1000 m, with the highest biomass values located in the surface layer (0-10 m) and gradually decreasing with depth, with values in excess of 100 mg C m −3 only found above 200 m depth.Tropical species tended to concentrate at greater depths than temperate or high-latitude species. Global biomass levels in the NH were relatively invariant over the seasonal cycle, but more seasonally variable in the SH.The collected database provides a valuable tool for modellers for the study of marine ecosystem processes and global biogeochemical cycles. By extrapolating regional biomass to a global scale, we established global pteropod biomass to add up to 500 Tg C.

show abstract

“…A further 186 individuals washed up on Cable Beach were measured for maximum bell width on 5 October 2012 by collecting all jellyfish from an area 4 by 8 m quadrat at 17.933556°S, 122.208500°E. Biomass in terms of wet weight to size was determined as above, and dry weight and ash-free dry weight (AFDW) were determined by drying samples of jellyfish tissue (principally from the bell) of known wet weight in a Labconco Freezone 2.5 freeze dryer at -40°C until constant weight was achieved and then reweighing before ashing at 450°C for 4.5 h and reweighing (Larson, 1986). Jellyfish tissue was not rinsed in freshwater before drying, so some residual salt may have remained when dried.…”

Section: Biomass Of Stranded Jellyfishmentioning

confidence: 99%

Role of winds and tides in timing of beach strandings, occurrence, and significance of swarms of the jellyfish Crambione mastigophora Mass 1903 (Scyphozoa: Rhizostomeae: Catostylidae) in north-western Australia

et al. 2015

View full text Add to dashboard Cite

Very large swarms of the red jellyfish Crambione mastigophora in north-western Australia disrupt swimming on tourist beaches causing economic impacts. In October 2012, jellyfish stranding on Cable Beach (density 2.20 ± 0.43 ind. m -2 ) was estimated at 52.8 million individuals or 14,172 t wet weight along 15 km of beach. Reports of strandings after this period and up to 250 km south of this location indicate even larger swarm biomass. Strandings of jellyfish were significantly associated with a 2-day lag in conditions of small tidal ranges (\5 m). More than 90% of strandings occurred 2 days after winds were blowing onshore, but with the small number of days when satellite wind data were available during the study period, this result was not statistically significant. Dedicated instrument measurements of meteorological parameters, rather than the indirect measures used in this study (satellite winds and modelled currents) may improve the predictability of such events and help authorities to plan for and manage swimming activity on beaches. We also show a high incidence of predation by C. mastigophora on bivalve larvae which may have a significant impact on the reproductive output of pearl oyster broodstock in the region.

show abstract

Water content, organic content, and carbon and nitrogen composition of medusae from the northeast Pacific

Cited by 174 publications

References 20 publications

Environmental patterns and biomass distribution of gelatinous macrozooplankton. Three study cases in the South-western Atlantic Ocean

Environmental patterns and biomass distribution of gelatinous macrozooplankton. Three study cases in the South-western Atlantic Ocean

The global distribution of pteropods and their contribution to carbonate and carbon biomass in the modern ocean

Role of winds and tides in timing of beach strandings, occurrence, and significance of swarms of the jellyfish Crambione mastigophora Mass 1903 (Scyphozoa: Rhizostomeae: Catostylidae) in north-western Australia

Contact Info

Product

Resources

About