Acclimation to ocean acidification during long‐term CO 2 exposure in the cold‐water coral L ophelia pertusa

2011 ◽  
Vol 18 (3) ◽  
pp. 843-853 ◽  
Author(s):  
Armin U. Form ◽  
Ulf Riebesell
Keyword(s):  
Ocean Acidification ◽  
Cold Water ◽  
Water Coral

scholarly journals Measuring Sound at a Cold-Water Coral Reef to Assess the Impact of COVID-19 on Noise Pollution

2021 ◽  
Vol 8 ◽  
Author(s):  
Laurence H. De Clippele ◽  
Denise Risch
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Sea Level ◽  
Cold Water ◽  
Noise Pollution ◽  
Ecosystem Functions ◽  
Noise Levels ◽  
Level Height ◽  
Water Coral

This study compares the noise levels at the cold-water coral Tisler reef, before and after the closure of the border between Norway and Sweden, which occurred as a direct result of the COVID-19 pandemic. The Tisler reef is a marine protected area located under a ferry “highway” that connects Norway and Sweden. Cold-water coral reefs are recognised as being important hotspots of both biodiversity and biomass, they function as breeding and nursing grounds for commercially important fish and are essential in providing ecosystem functions. Whilst studies have shown that fishery, ocean warming, and acidification threaten them, the effects of noise pollution on cold-water coral reefs remains unstudied. To study the severity of noise pollution at the Tisler reef, a long-term acoustic recorder was deployed from 29 January 2020 until 26 May 2020. From 15 March COVID-19 lockdown measures stopped passenger vessel traffic between Norway and Sweden. This study found that the overall noise levels were significantly lower after border closure, due to reduced ferry traffic, wind speeds, and sea level height. When comparing the median hourly noise levels of before vs. after border closure, this study measured a significant reduction in the 63–125 Hz 1/3 octave band noise levels of 8.94 ± 0.88 (MAD) dB during the day (07:00:00–19:59:59) and 1.94 ± 0.11 (MAD) dB during the night (20:00:00–06:59:59). Since there was no ferry traffic during the night, the drop in noise levels at night was likely driven by seasonal changes, i.e., the reduction in wind speed and sea level height when transitioning from winter to spring. Taking into account this seasonal effect, it can be deduced that the COVID-19 border closure reduced the noise levels in the 63–125 Hz 1/3 octave bands at the Tisler reef by 7.0 ± 0.99 (MAD) dB during the day. While the contribution of, and changes in biological, weather-related and geophysical sound sources remain to be assessed in more detail, understanding the extent of anthropogenic noise pollution at the Tisler cold-water coral reef is critical to guide effective management to ensure the long-term health and conservation of its ecosystem functions.

Controls on boron isotopes in a cold-water coral and the cost of resilience to ocean acidification

2021 ◽  
Vol 554 ◽  
pp. 116662
Author(s):  
Alexander C. Gagnon ◽  
Anne M. Gothmann ◽  
Oscar Branson ◽  
James W.B. Rae ◽  
Joseph A. Stewart
Keyword(s):  
Ocean Acidification ◽  
Cold Water ◽  
Boron Isotopes ◽  
The Cost ◽  
Water Coral

scholarly journals Long term monitoring of cold-water coral growth shows response to episodic meteorological events in the NW Mediterranean

2020 ◽  
Vol 160 ◽  
pp. 103255
Author(s):  
L. Chapron ◽  
N. Le Bris ◽  
X. Durrieu de Madron ◽  
E. Peru ◽  
P.E. Galand ◽  
...  
Keyword(s):  
Cold Water ◽  
Coral Growth ◽  
Nw Mediterranean ◽  
Long Term Monitoring ◽  
Term Monitoring ◽  
Water Coral

scholarly journals Long-term growth rates of four Mediterranean cold-water coral species maintained in aquaria

2011 ◽  
Vol 429 ◽  
pp. 57-65 ◽  
Author(s):  
C Orejas ◽  
C Ferrier-Pagès ◽  
S Reynaud ◽  
A Gori ◽  
E Beraud ◽  
...  
Keyword(s):  
Growth Rates ◽  
Coral Species ◽  
Cold Water ◽  
Water Coral

Tolerance to long-term exposure of suspended benthic sediments and drill cuttings in the cold-water coral Lophelia pertusa

2013 ◽  
Vol 70 (1-2) ◽  
pp. 176-188 ◽  
Author(s):  
Ann I. Larsson ◽  
Dick van Oevelen ◽  
Autun Purser ◽  
Laurenz Thomsen
Keyword(s):  
Cold Water ◽  
Lophelia Pertusa ◽  
Drill Cuttings ◽  
Benthic Sediments ◽  
Water Coral

Differential response of two Mediterranean cold-water coral species to ocean acidification

Coral Reefs ◽  
2014 ◽  
Vol 33 (3) ◽  
pp. 675-686 ◽  
Author(s):  
Juancho Movilla ◽  
Covadonga Orejas ◽  
Eva Calvo ◽  
Andrea Gori ◽  
Àngel López-Sanz ◽  
...  
Keyword(s):  
Ocean Acidification ◽  
Coral Species ◽  
Cold Water ◽  
Differential Response ◽  
Water Coral

scholarly journals The influence of Atlantic climate variability on the long-term development of Mediterranean cold-water coral mounds (Alboran Sea, Melilla Mound Field)

2020 ◽  
Author(s):  
Robin Fentimen ◽  
Eline Feenstra ◽  
Andres Rüggeberg ◽  
Efraim Hall ◽  
Valentin Rime ◽  
...  
Keyword(s):  
Grain Size ◽  
Environmental Conditions ◽  
Cold Water ◽  
Water Masses ◽  
Alboran Sea ◽  
Mound Formation ◽  
Glacial Periods ◽  
Alborán Sea ◽  
Water Coral

Abstract. This study provides a detailed reconstruction of climatic events affecting a cold-water coral mound located within the East Melilla Coral Province (Southeast Alboran Sea) over the last 300 ky. Based on benthic foraminiferal assemblages, macrofaunal quantification, grain size analysis, sediment geochemistry, and foraminiferal stable isotope compositions, a reconstruction of environmental conditions prevailing in the region is proposed. The variations in planktonic and benthic δ18O values indicate that cold-water coral mound formation follows global climatic variability. Cold-water corals develop during both interglacial and glacial periods, although interglacial conditions would have allowed better proliferation. Environmental conditions during glacial periods, particularly during the Last Glacial Maximum, appear to better suit the ecological requirements of the erect cheilostome bryozoan Buskea dichotoma. Benthic foraminiferal assemblages suggest that high organic carbon flux characterized interglacial periods. Results from this study imply that increased influence of warm and moist Atlantic air masses during interglacial periods led to increased fluvial discharge, providing nutrients for cold-water corals. Important interglacial Atlantic Water mass inflow further promoted strong Alboran Gyres, and thus mixing between surface and intermediate water masses. Increased turbulence and nutrient supply would have hence provided suitable conditions for coral development. In contrast, benthic foraminiferal assemblages and grain size distributions suggest that the benthic environment received less organic matter during glacial periods, whilst bottom flow velocity was reduced in comparison to interglacial periods. During glacial periods, arid continental conditions combined to more stratified water masses caused a dwindling of coral communities in the southeastern Alboran Sea, although aeolian dust input may have allowed these to survive. In contrast to Northeast Atlantic counterparts, coral mound build-up in the southeastern Alboran Sea occurs during glacial as well as during interglacial periods and at very low aggradation rates (between 1 and 9 cm ky−1). We propose that Buskea dichotoma plays an important role in long-term mound formation at the East Melilla Coral Province, noticeably during glacial periods.

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