New insights on Antarctic gorgonians' age, growth and their potential as paleorecords

Martínez-Dios, Ariadna; Domínguez-Carrió, Carlos; Zapata-Guardiola, Rebeca; Gili, Josep-Marı́a

doi:10.1016/j.dsr.2016.03.007

Cited by 11 publications

(10 citation statements)

References 53 publications

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“…As for other octocoral species (Roark et al, 2009;Martinez-Dios et al, 2016), Paramuricea biscaya and Paramuricea sp. B3 were characterized by high longevity.…”

Section: Discussionmentioning

confidence: 93%

“…Coraliidae (Roark et al, 2006), Isididae (Sherwood and Edinger, 2009;Thresher, 2009), Paragorgiidae (Sherwood and Edinger, 2009), Plexauridae (Sherwood and Edinger, 2009;Prouty et al, 2014) and Primnoidae (Sherwood et al, 2005;Sherwood and Edinger, 2009;Martinez-Dios et al, 2016). Although radiocarbon methods are suitable for time periods as far back as 40,000 years, their accuracy is limited by calibration issues (Robinson et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Although radiocarbon methods are suitable for time periods as far back as 40,000 years, their accuracy is limited by calibration issues (Robinson et al, 2014). As an alternative, analyses based on the isotope 210 Pb have been used in several studies of Isididae (Tracey et al, 2007) and Primnoidae (Andrews et al, 2002;Martinez-Dios et al, 2016). 210 Pb dating provides a more reliable measure of growth rates and coral ages up to about 100 years (Robinson et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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In situ growth of deep-sea octocorals after the Deepwater Horizon oil spill

Girard

Cruz

Glickman

et al. 2019

Elementa: Science of the Anthropocene

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Although the role of deep-sea corals in supporting biodiversity is well accepted, their ability to recover from anthropogenic impacts is still poorly understood. An important component of recovery is the capacity of corals to grow back after damage. Here we used data collected as part of an image-based long-term monitoring program that started in the aftermath of the Deepwater Horizon oil spill to develop a non-destructive method to measure in situ growth rates of Paramuricea spp. corals and characterize the impact of the spill on growth. About 200 individual coral colonies were imaged every year between 2011 and 2017 at five sites (three that were impacted by the spill and two that were not). Images were then used to test different methods for measuring growth. The most effective method was employed to estimate baseline growth rates, characterize growth patterns, estimate the age of every colony, and determine the effects of impact and coral size on growth. Overall growth rates were variable but low, with average annual growth rates per site ranging from 0.14 to 2.5 cm/year/colony. Based on coral size and growth rates, some colonies are estimated to be over two thousand years old. While coral size did not have an influence on growth, the initial level of total impact in 2011 had a significant positive effect on the proportion of new growth after 2014. However, growth was not sufficient to compensate for branch loss at one of the impacted sites where corals are expected to take an average of 50 years to grow back to their original size. The non-destructive method we developed could be used to estimate the in situ growth rates on any planar octocoral, and would be particularly useful to follow the recovery of corals after impact or assess the effectiveness of Marine Protected Areas.

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“…As for other octocoral species (Roark et al, 2009;Martinez-Dios et al, 2016), Paramuricea biscaya and Paramuricea sp. B3 were characterized by high longevity.…”

Section: Discussionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

In situ growth of deep-sea octocorals after the Deepwater Horizon oil spill

Girard

Cruz

Glickman

et al. 2019

Elementa: Science of the Anthropocene

View full text Add to dashboard Cite

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“…These molecules are considered of high energetic content (Dalsgaard et al 2003), and may be a key factor to face seasonal (winter) food constraints in benthic suspension feeders in Antarctica (Servetto et al 2017). The observed lipids and proteins may indicate a clear tendency toward a mechanism of energy accumulation instead of growth (Elias-Piera et al 2013), which has been demonstrated to be very slow in the few suspension-feeding organisms analysed in Antarctic waters (Martínez-Dios et al 2016). Deep sea waters in Antarctica are one of the less studied environments worldwide.…”

Section: )mentioning

confidence: 99%

Trophic ecology of three echinoderms in deep waters of the Weddell Sea (Antarctica)

Rossi¹,

Elias-Piera²

2018

Mar. Ecol. Prog. Ser.

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In the Southern Ocean, the trophic ecology of deep-sea communities is probably one of the most neglected fields in the discipline. In the present study, the trophic position and energy storage-mobilization of 3 different deep-sea echinoderms living in the Weddell Sea (around 1500 m depth) were investigated with indirect tools (i.e. stable isotopes, carbohydratelipid-protein balance, and free fatty acid [FFA] contents). The stalked crinoid Dumetocrinus antarcticus, the holothurian Rhipidothuria racovitzai, and the ophiuroid Ophiura carinifera were sampled in spring 2003 during a Polarstern cruise. We found that stable isotopes were in line with previous results of other species ( 13 C ranging from-24.3‰ to-26.5‰;  15 N ranging from 6.8‰ to 7.9‰), showing similarities in the trophic position of the 3 echinoderms. The capability to store energy by these 3 organisms is conspicuous and different, e.g. from 18 to 45% of the organic matter (OM) consists of lipids. The capability to mobilize energy in the form of carbohydrates and FFAs among species was also very different (e.g. biomolecules ranging from 9 to 22 µg carbohydrates mgOM-1 and from 4 to 39 µg FFA mgOM-1). It is suggested that even if the trophic level is similar in the 3 echinoderms, the strategies to invest the energy inputs in these deep-sea organisms in polar environments may be quite different.

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“…For instance, some gorgonians of the genus Thouarella have been estimated to be between 650 and 1,100 years old. Specimens recently collected in the high Antarctica are part of the current fauna and are the result of a long and complex evolutionary history (Martinez-Dios, Domínguez-Carrió, Zapata-Guardiola, & Gili, 2016). From a spatial point of view, learning about the processes that affect the distribution, abundance, and interactions between species is one of the main lines of research in the ecology of Antarctic organisms.…”

Section: Monographmentioning

confidence: 99%

La paradoxa de la biodiversitat marina antàrtica

Ambroso

Gili

Zapata-Guardiola

et al. 2018

Mètode

Self Cite

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The study of pristine places is very important for learning about the state of the oceans before the impact of human beings. Because of the extreme environmental conditions of the Antarctic continental shelf – its distance from other continents, depth, and the weight of the continental ice – it offers us a great opportunity to better understand how a pristine ecosystem would normally be. In addition to a high level of biodiversity, Antarctic benthic organisms present patterns of demographic and spatial distribution that are different from the communities of the continental platforms in other seas and oceans of the world. This makes Antarctic benthic communities look, more than one might think, like the communities with the highest known biodiversity in the world.

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New insights on Antarctic gorgonians' age, growth and their potential as paleorecords

Cited by 11 publications

References 53 publications

In situ growth of deep-sea octocorals after the Deepwater Horizon oil spill

In situ growth of deep-sea octocorals after the Deepwater Horizon oil spill

Trophic ecology of three echinoderms in deep waters of the Weddell Sea (Antarctica)

La paradoxa de la biodiversitat marina antàrtica

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