Gutow, Lars; Petersen, Imke; Giménez, Luis; Thiel, Martin; Rivedeneira, Marcelo M (2021): Surface area:biomass relationship for Sargassum fluitans and Sargassum natans from Sisal Beach, Mexico [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.931835, In: Gutow, L et al. (2021): Rafting communities on pelagic Sargassum and floating marine debris in the Sargasso Sea [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.931845
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
To establish the surface area : biomass relationship of pelagic Sargassum spp., individual thalli of beach-cast Sargassum fluitans and Sargassum natans were collected at Sisal Beach, Yucatan peninsula, Mexico in November 2016. 22 thalli each of both species were collected. Additionally, three thalli of an additional species were collected. This species could not be clearly identified and the thalli were not further considered for analysis. Each thalli was blotted with tissue paper to remove adherent seawater and weighed on the beach using a spring balance. Subsequently, the single parts of the thalli (blades, pneumatocysts, stipes) were separated from each other, spread in a tray and photographed together with a ruler as a size reference and a label. The two dimensional projection area of each thallus part was determined using an image analysis software from which the surface area of each three dimensional structure was calculated to obtain the total surface area of the thallus.
Coverage:
Latitude: 21.270000 * Longitude: -89.720000
Date/Time Start: 2016-11-02T00:00:00 * Date/Time End: 2016-11-03T00:00:00
Minimum ORDINAL NUMBER: 1 * Maximum ORDINAL NUMBER: 47
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | ORDINAL NUMBER | Ord No | Gutow, Lars | Geocode – Thallus no. | ||
| 2 | DATE/TIME | Date/Time | Gutow, Lars | Geocode – Sampling date | ||
| 3 | LATITUDE | Latitude | Gutow, Lars | Geocode | ||
| 4 | LONGITUDE | Longitude | Gutow, Lars | Geocode | ||
| 5 | Number of photos | Photo | # | Gutow, Lars | No. of images per thallus | |
| 6 | Sargassum, wet mass | Sargassum wm | g | Gutow, Lars | Total thallus wet weight | |
| 7 | Image | IMAGE | Gutow, Lars | |||
| 8 | Species | Species | Gutow, Lars | |||
| 9 | Area | Area | cm2 | Gutow, Lars | Image analysis | Measured 2-dimensional projection area on image |
| 10 | Surface area | SA | cm2 | Gutow, Lars | Calculated | Calculated thallus surface area |
| 11 | Comment | Comment | Gutow, Lars |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
372 data points
Data
All files referred to in data matrix can be downloaded in one go as ZIP or TAR. Be careful: This download can be very large! To protect our systems from misuse, we require to sign up for an user account before downloading.
| 1 Ord No | 2 Date/Time | 3 Latitude | 4 Longitude | 5 Photo [#] | 6 Sargassum wm [g] | 7 IMAGE | 8 Species | 9 Area [cm2] | 10 SA [cm2] | 11 Comment |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2016-11-02 | 21.27 | -89.72 | 1 | 4.2324 | 11021266.jpg | Sargassum fluitans | 51.9475 | 114.0364 | image erronously labelled as S. natans #1 |
| 2 | 2016-11-02 | 21.27 | -89.72 | 1 | 3.7985 | 11021270.jpg | Sargassum fluitans | 52.5993 | 113.0146 | image erronously labelled as S. natans #2 |
| 3 | 2016-11-02 | 21.27 | -89.72 | 1 | 5.5327 | 11021274.jpg | Sargassum fluitans | 63.0537 | 141.5748 | image erronously labelled as S. natans #3 |
| 4 | 2016-11-02 | 21.27 | -89.72 | 1 | 10.0970 | 11021278.jpg | Sargassum sp. | uncertain taxonomic identity; surface area not measured, image labelled as S. natans #4 | ||
| 5 | 2016-11-02 | 21.27 | -89.72 | 1 | 4.6113 | 11021281.jpg | Sargassum fluitans | 67.2525 | 146.4304 | image erronously labelled as S. natans #5 |
| 6 | 2016-11-02 | 21.27 | -89.72 | 1 | 6.6235 | 11021285.jpg | Sargassum fluitans | 85.0662 | 190.4744 | image erronously labelled as S. natans #6 |
| 7 | 2016-11-02 | 21.27 | -89.72 | 1 | 4.7593 | 11021289.jpg | Sargassum fluitans | 71.6443 | 155.0876 | image erronously labelled as S. natans #7 |
| 8 | 2016-11-02 | 21.27 | -89.72 | 1 | 7.8623 | 11021293.jpg | Sargassum fluitans | 115.5051 | 244.4286 | image erronously labelled as S. natans #8 |
| 9 | 2016-11-02 | 21.27 | -89.72 | 1 | 7.2750 | 11021296.jpg | Sargassum fluitans | 102.1758 | 221.3704 | image erronously labelled as S. natans #9 |
| 10 | 2016-11-02 | 21.27 | -89.72 | 1 | 2.9795 | 11021300.jpg | Sargassum fluitans | 38.5546 | 85.9578 | image erronously labelled as S. natans #10 |
| 11 | 2016-11-02 | 21.27 | -89.72 | 1 | 2.1693 | 11021305.jpg | Sargassum fluitans | 29.4315 | 62.8944 | image erronously labelled as S. natans #11 |
| 12 | 2016-11-02 | 21.27 | -89.72 | 1 | 4.1361 | 11021310.jpg | Sargassum fluitans | 55.1722 | 120.1864 | image erronously labelled as S. natans #12 |
| 13 | 2016-11-02 | 21.27 | -89.72 | 1 | 3.1051 | 11021314.jpg | Sargassum fluitans | 45.4613 | 97.2320 | image erronously labelled as S. natans #13 |
| 14 | 2016-11-02 | 21.27 | -89.72 | 1 | 5.3419 | 11021318.jpg | Sargassum fluitans | 63.4505 | 138.5674 | image erronously labelled as S. natans #14 |
| 15 | 2016-11-02 | 21.27 | -89.72 | 1 | 3.9042 | 11021322.jpg | Sargassum fluitans | 71.5042 | 154.4736 | image erronously labelled as S. natans #15 |
| 16 | 2016-11-02 | 21.27 | -89.72 | 1 | 5.6406 | 11021325.jpg | Sargassum fluitans | 65.3885 | 145.1128 | image erronously labelled as S. natans #16 |
| 17 | 2016-11-02 | 21.27 | -89.72 | 1 | 3.1684 | 11021330.jpg | Sargassum fluitans | 47.4493 | 103.6190 | image erronously labelled as S. natans #17 |
| 18 | 2016-11-02 | 21.27 | -89.72 | 1 | 1.5641 | 11021335.jpg | Sargassum fluitans | 25.5138 | 54.6266 | image erronously labelled as S. natans #18 |
| 19 | 2016-11-02 | 21.27 | -89.72 | 2 | 8.9553 | 11021339.jpg | Sargassum fluitans | 65.5779 | 142.1346 | image erronously labelled as S. natans #19A |
| 19 | 2016-11-02 | 21.27 | -89.72 | 2 | 8.9553 | 11021340.jpg | Sargassum fluitans | 49.6787 | 102.6874 | image erronously labelled as S. natans #19B |
| 20 | 2016-11-02 | 21.27 | -89.72 | 1 | 5.6490 | 11021345.jpg | Sargassum fluitans | 79.8884 | 166.6796 | image erronously labelled as S. natans #20 |
| 21 | 2016-11-02 | 21.27 | -89.72 | 1 | 7.2414 | 11021349.jpg | Sargassum sp. | uncertain taxonomic identity; surface area not measured, image labelled as S. natans #4 | ||
| 22 | 2016-11-02 | 21.27 | -89.72 | 1 | 4.4476 | 11021352.jpg | Sargassum sp. | uncertain taxonomic identity; surface area not measured, image labelled as S. natans #4 | ||
| 23 | 2016-11-03 | 21.27 | -89.72 | 1 | 7.9039 | 11031581.jpg | Sargassum fluitans | 104.2402 | 209.7868 | image erronously labelled as S. natans #23 |
| 24 | 2016-11-03 | 21.27 | -89.72 | 1 | 3.6335 | 11031586.jpg | Sargassum fluitans | 57.3478 | 121.8956 | image erronously labelled as S. natans #24 |
| 25 | 2016-11-03 | 21.27 | -89.72 | 2 | 11.4880 | 11031590.jpg | Sargassum fluitans | 98.3347 | 207.1358 | image erronously labelled as S. natans #25A |
| 25 | 2016-11-03 | 21.27 | -89.72 | 2 | 11.4880 | 11031592.jpg | Sargassum fluitans | 67.0260 | 138.6336 | image erronously labelled as S. natans #25B |
| 26 | 2016-11-03 | 21.27 | -89.72 | 1 | 3.2458 | 11031596.jpg | Sargassum natans | 24.7364 | 61.8150 | image labelled as S. sp. #26 |
| 27 | 2016-11-03 | 21.27 | -89.72 | 1 | 3.8740 | 11031599.jpg | Sargassum natans | 30.2741 | 68.1812 | image labelled as S. sp. #27 |
| 28 | 2016-11-03 | 21.27 | -89.72 | 1 | 1.4076 | 11031603.jpg | Sargassum natans | 15.2497 | 33.1826 | image labelled as S. sp. #28 |
| 29 | 2016-11-03 | 21.27 | -89.72 | 2 | 6.5965 | 11031607.jpg | Sargassum natans | 32.1670 | 68.9440 | image labelled as S. sp. #29A |
| 29 | 2016-11-03 | 21.27 | -89.72 | 2 | 6.5965 | 11031610.jpg | Sargassum natans | 17.9053 | 37.4020 | image labelled as S. sp. #29B |
| 30 | 2016-11-03 | 21.27 | -89.72 | 1 | 2.4383 | 11031614.jpg | Sargassum natans | 18.0296 | 39.4452 | image labelled as S. sp. #30 |
| 31 | 2016-11-03 | 21.27 | -89.72 | 1 | 2.3600 | 11031618.jpg | Sargassum natans | 20.1177 | 43.6694 | image labelled as S. sp. #31 |
| 32 | 2016-11-03 | 21.27 | -89.72 | 1 | 3.1129 | 11031622.jpg | Sargassum natans | 22.6306 | 51.4118 | image labelled as S. sp. #32 |
| 33 | 2016-11-03 | 21.27 | -89.72 | 1 | 2.1257 | 11031625.jpg | Sargassum natans | 19.6710 | 44.5014 | image labelled as S. sp. #33 |
| 34 | 2016-11-03 | 21.27 | -89.72 | 2 | 6.8037 | 11031629.jpg | Sargassum natans | 38.9319 | 83.7008 | image labelled as S. sp. #34A |
| 34 | 2016-11-03 | 21.27 | -89.72 | 2 | 6.8037 | 11031632.jpg | Sargassum natans | 14.4457 | 30.9520 | image labelled as S. sp. #34B |
| 35 | 2016-11-03 | 21.27 | -89.72 | 1 | 3.5295 | 11042202.jpg | Sargassum natans | 28.6730 | 62.2382 | image labelled as S. sp. #35 |
| 36 | 2016-11-03 | 21.27 | -89.72 | 1 | 2.8150 | 11042205.jpg | Sargassum natans | 31.2411 | 67.8726 | image labelled as S. sp. #36 |
| 37 | 2016-11-03 | 21.27 | -89.72 | 1 | 2.0661 | 11042210.jpg | Sargassum natans | 21.4099 | 46.5346 | image labelled as S. sp. #37 |
| 38 | 2016-11-03 | 21.27 | -89.72 | 2 | 7.1883 | 11042213.jpg | Sargassum natans | 47.5909 | 104.2484 | image labelled as S. sp. #38A |
| 38 | 2016-11-03 | 21.27 | -89.72 | 2 | 7.1883 | 11042215.jpg | Sargassum natans | 23.3680 | 50.5600 | image labelled as S. sp. #38B |
| 39 | 2016-11-03 | 21.27 | -89.72 | 1 | 2.5818 | 11042220.jpg | Sargassum natans | 22.5183 | 53.8432 | image labelled as S. natans #39 |
| 40 | 2016-11-03 | 21.27 | -89.72 | 1 | 3.0478 | 11042224.jpg | Sargassum natans | 24.1697 | 52.4036 | image labelled as S. natans #40 |
| 41 | 2016-11-03 | 21.27 | -89.72 | 1 | 1.8400 | 11042228.jpg | Sargassum natans | 15.3018 | 36.3226 | image labelled as S. natans #41 |
| 42 | 2016-11-03 | 21.27 | -89.72 | 2 | 7.3227 | 11042231.jpg | Sargassum natans | 41.5023 | 91.6994 | image labelled as S. natans #42A |
| 42 | 2016-11-03 | 21.27 | -89.72 | 2 | 7.3227 | 11042234.jpg | Sargassum natans | 19.6468 | 40.3102 | image labelled as S. natans #42B |
| 43 | 2016-11-03 | 21.27 | -89.72 | 1 | 3.0533 | 11042237.jpg | Sargassum natans | 29.5158 | 63.4368 | image labelled as S. natans #43 |
| 44 | 2016-11-03 | 21.27 | -89.72 | 1 | 3.9085 | 11042241.jpg | Sargassum natans | 35.8196 | 77.5858 | image labelled as S. natans #44 |
| 45 | 2016-11-03 | 21.27 | -89.72 | 1 | 3.6194 | 11042246.jpg | Sargassum natans | 38.5585 | 82.9608 | image labelled as S. natans #45 |
| 46 | 2016-11-03 | 21.27 | -89.72 | 1 | 3.7412 | 11042250.jpg | Sargassum natans | 31.1926 | 71.0114 | image labelled as S. natans #46 |
| 47 | 2016-11-03 | 21.27 | -89.72 | 2 | 5.7928 | 11042254.jpg | Sargassum natans | 39.0264 | 81.2196 | image labelled as S. natans #47A |
| 47 | 2016-11-03 | 21.27 | -89.72 | 2 | 5.7928 | 11042256.jpg | Sargassum natans | 26.0411 | 54.9808 | image labelled as S. natans #47B |