Dataset Open access March 2023

Combined effect of ocean acidification and bottom trawling long-term exposure on larval swimming speed of the scleractinian cold-water-coral Desmophyllum pertusum

PANGAEA

10.1594/PANGAEA.964225

Open DOI

Total authors

5

Involved team members

2

Citations

0

References

7

Related to this work

iAtlantic

Abstract

We report the results of a series of experiments investigating the combined effects of ocean acidification and suspended natural benthic sediments (NS) generated during bottom trawling on the early life stages of the cold-water coral Desmophyllum pertusum (syn. Lophelia pertusa). The experiment was conducted at the Tjärnö Marine Laboratory Facilities (University of Gothenburg, Sweden). For each experiment, the larvae/embryos were exposed to four different treatments: (1) current pCO2 (control): mimicking present-day pCO2/pH condition (pCO2 400 µatm; ambient pHT: 8.01), (2) high pCO2: a scenario reflecting the IPCC RCP8.5 prediction (pCO2 1000 µatm; low pHT: 7.63), (3) current pCO2 + NS (5 mg/L), and (4) high pCO2 + NS (5 mg/L): with the introduction of natural benthic sediments (NS) at a concentration of 5 mg/mL. The NS were collected at ~130 m water depth from a regularly trawled soft bottom close to the reef site of Säcken in the Northern Koster-fjord in Sweden, and the grain sizes ≤ 63 μm were used for the experiment. Embryos and larvae were exposed to the different treatments in 75 mL culture flasks mounted on a rotating plankton wheel to keep sediments in suspension. The second experiment examined the effects on larval survival and swimming speed in two sub-experiments: A) short-term exposure (48 hours) and B) long-term exposure (1 week). This dataset presents the results for larval swimming speeds under long-term exposure.

Authors

2 involved team members

Sire De Vilar, Anaïs Team member

0000-0002-7523-1837

Carreiro-Silva, Marina Team member

0000-0001-6446-6342

R

Rakka, Maria

0000-0002-8179-242X

S

Strömberg, Susanna M

L

Larsson, Ann I

0000-0003-3268-2037

Record details

Type

dataset

Language

EN

Keywords

Trawling Benthic zone Oceanography Plankton Environmental science Coral reef Ocean acidification Bottom trawling Coral Reef Larva Fishery Current (fluid) Benthos Pelagic zone Invertebrate Ichthyoplankton Seawater Fishing Biology