scholarly journals Low and variable pH decreases recruitment efficiency in populations of a temperate coral naturally present at a CO 2 vent

2018 ◽  
Vol 64 (3) ◽  
pp. 1059-1069 ◽  
Author(s):  
Erik Caroselli ◽  
Francesca Gizzi ◽  
Fiorella Prada ◽  
Chiara Marchini ◽  
Valentina Airi ◽  
...  
Keyword(s):  
Temperate Coral

scholarly journals Season, but not symbiont state, drives microbiome structure in the temperate coral Astrangia poculata

Microbiome ◽  
2017 ◽  
Vol 5 (1) ◽  
Author(s):  
Koty H. Sharp ◽  
Zoe A. Pratte ◽  
Allison H. Kerwin ◽  
Randi D. Rotjan ◽  
Frank J. Stewart
Keyword(s):  
Astrangia Poculata ◽  
Temperate Coral

scholarly journals Response of the temperate coral <i>Cladocora caespitosa</i> to mid- and long-term exposure to <i>p</i>CO<sub>2</sub> and temperature levels projected for the year 2100 AD

2010 ◽  
Vol 7 (1) ◽  
pp. 289-300 ◽  
Author(s):  
R. Rodolfo-Metalpa ◽  
S. Martin ◽  
C. Ferrier-Pagès ◽  
J.-P. Gattuso
Keyword(s):  
Slow Growth ◽  
Elevated Pco2 ◽  
Saturation State ◽  
Co2 Partial Pressure ◽  
Cladocora Caespitosa ◽  
Temperate Coral ◽  
Predominant Factor ◽  
Zooxanthellate Coral ◽  
Temperature Levels

Abstract. Atmospheric CO2 partial pressure (pCO2) is expected to increase to 700 μatm or more by the end of the present century. Anthropogenic CO2 is absorbed by the oceans, leading to decreases in pH and the CaCO3 saturation state (Ω) of the seawater. Elevated pCO2 was shown to drastically decrease calcification rates in tropical zooxanthellate corals. Here we show, using the Mediterranean zooxanthellate coral Cladocora caespitosa, that an increase in pCO2, in the range predicted for 2100, does not reduce its calcification rate. Therefore, the conventional belief that calcification rates will be affected by ocean acidification may not be widespread in temperate corals. Seasonal change in temperature is the predominant factor controlling photosynthesis, respiration, calcification and symbiont density. An increase in pCO2, alone or in combination with elevated temperature, had no significant effect on photosynthesis, photosynthetic efficiency and calcification. The lack of sensitivity C. caespitosa to elevated pCO2 might be due to its slow growth rates, which seem to be more dependent on temperature than on the saturation state of calcium carbonate in the range projected for the end of the century.

scholarly journals Patterns, dynamics and consequences of microplastic ingestion by the temperate coral, Astrangia poculata

2019 ◽  
Vol 286 (1905) ◽  
pp. 20190726 ◽  
Author(s):  
Randi D. Rotjan ◽  
Koty H. Sharp ◽  
Anna E. Gauthier ◽  
Rowan Yelton ◽  
Eliya M. Baron Lopez ◽  
...  
Keyword(s):  
Rhode Island ◽  
Marine Invertebrates ◽  
Trophic Levels ◽  
Coastal Environments ◽  
Monitoring Tool ◽  
Astrangia Poculata ◽  
Temperate Coral ◽  
Inhibit Food Intake ◽  
Aquatic Food ◽  
Behavioural Dynamics

Microplastics (less than 5 mm) are a recognized threat to aquatic food webs because they are ingested at multiple trophic levels and may bioaccumulate. In urban coastal environments, high densities of microplastics may disrupt nutritional intake. However, behavioural dynamics and consequences of microparticle ingestion are still poorly understood. As filter or suspension feeders, benthic marine invertebrates are vulnerable to microplastic ingestion. We explored microplastic ingestion by the temperate coral Astrangia poculata . We detected an average of over 100 microplastic particles per polyp in wild-captured colonies from Rhode Island. In the laboratory, corals were fed microbeads to characterize ingestion preference and retention of microplastics and consequences on feeding behaviour. Corals were fed biofilmed microplastics to test whether plastics serve as vectors for microbes. Ingested microplastics were apparent within the mesenterial tissues of the gastrovascular cavity. Corals preferred microplastic beads and declined subsequent offerings of brine shrimp eggs of the same diameter, suggesting that microplastic ingestion can inhibit food intake. The corals co-ingested Escherichia coli cells with microbeads. These findings detail specific mechanisms by which microplastics threaten corals, but also hint that the coral A. poculata , which has a large coastal range, may serve as a useful bioindicator and monitoring tool for microplastic pollution.

A description of the skeletal development pattern of the temperate coral Caryophyllia smithi based on internal growth lines

1997 ◽  
Vol 77 (2) ◽  
pp. 375-387 ◽  
Author(s):  
I. Nagelkerken ◽  
G. van der Velde ◽  
P.H. van Avesaath
Keyword(s):  
Skeletal Development ◽  
Skeletal Structure ◽  
Coral Tissue ◽  
Development Pattern ◽  
Edge Zone ◽  
Temperate Coral ◽  
Polyp Tissue ◽  
Upward Growth ◽  
Three Stages ◽  
Strong Attachment

Scanning electron microscopy was used to study the microstructure and internal growth lines of the temperate ahermatypic coral Caryophyllia smithi (Cnidaria: Anthozoa). The arrangement of internal growth lines in combination with the orientation of aragonite crystals were used to describe the pattern of skeletal development in C. smithi. The observed pattern was verified using observations from another study on skeletal development in C. smithi, but which was based only on external observations of skeletons of living and dead specimens in different stages of development. The pattern of skeletal development in C. smithi is suggested to be subdivided into three stages, based on the deposition of specific skeletal elements during the development of the skeleton. In the first ‘juvenile’ stage, various primary skeletal elements are formed: the basal plate, the septa and a primary and secondary septotheca. The second ‘half full grown’ stage is characterized by development of apparently only an extended basal attachment, which enlarges the attachment area to the substratum. In the third ‘full grown’ stage, the edge zone of the polyp tissue is retracted from the extended basal attachment to the calice, and upward growth of the coral predominates followed by lateral thickening of the septotheca, costae, septa and columella. Internal growth lines were found throughout the skeleton and may be composed of, or resulting from the presence of organic matter. The septotheca and the extended basal attachment, which are important for a strong skeletal structure and a strong attachment to the substratum, respectively, are probably thickened faster than the other skeletal elements. Attachment scars were found in areas where attachment of the coral tissue to the skeleton is critical.

Recruitment and mortality of the temperate coral Cladocora caespitosa: implications for the recovery of endangered populations

Coral Reefs ◽  
2014 ◽  
Vol 33 (2) ◽  
pp. 403-407 ◽  
Author(s):  
Diego K. Kersting ◽  
Núria Teixidó ◽  
Cristina Linares
Keyword(s):  
Cladocora Caespitosa ◽  
Temperate Coral

Population dynamics of a temperate coral along a depth gradient in the Dardanelles

2020 ◽  
Vol 65 (11) ◽  
pp. 2676-2687
Author(s):  
Erik Caroselli ◽  
Hasan Baris Özalp ◽  
Maila Lavia ◽  
Francesca De Witt ◽  
Francesco Raimondi ◽  
...  
Keyword(s):  
Population Dynamics ◽  
Depth Gradient ◽  
Temperate Coral

Effects of temperature, light and heterotrophy on the growth rate and budding of the temperate coral Cladocora caespitosa

Coral Reefs ◽  
2007 ◽  
Vol 27 (1) ◽  
pp. 17-25 ◽  
Author(s):  
R. Rodolfo-Metalpa ◽  
A. Peirano ◽  
F. Houlbrèque ◽  
M. Abbate ◽  
C. Ferrier-Pagès
Keyword(s):  
Growth Rate ◽  
Cladocora Caespitosa ◽  
Temperate Coral ◽  
Effects Of Temperature

scholarly journals Ocean acidification limits temperature-induced poleward expansion of coral habitats around Japan

2012 ◽  
Vol 9 (6) ◽  
pp. 7165-7196 ◽  
Author(s):  
Y. Yara ◽  
M. Vogt ◽  
M. Fujii ◽  
H. Yamano ◽  
C. Hauri ◽  
...  
Keyword(s):  
Ocean Acidification ◽  
Climate Models ◽  
Tropical Regions ◽  
Temperate Coral ◽  
Future Global Warming ◽  
Coral Communities ◽  
Potential Habitats ◽  
Suitable Habitats ◽  
Business As Usual

Abstract. Using results from four coupled global carbon cycle-climate models combined with in situ observations, we estimate the combined effects of future global warming and ocean acidification on potential habitats for tropical/subtropical and temperate coral communities in the seas around Japan. The suitability of the coral habitats are identified primarily on the basis of the currently observed ranges for temperature and saturation states Ω with regard to aragonite (Ωarag). We find that under the "business as usual" SRES A2 scenario, coral habitats will expand northward by several hundred kilometers by the end of this century. At the same time, coral habitats are projected to become sandwiched between the tropical regions, where the frequency of coral bleaching will increase, and the temperate-to-subpolar latitudes, where Ωarag will become too low to support sufficiently high calcification rates. As a result, the area of coral habitats around Japan that is suitable to tropical-subtropical communities will be reduced by half by the 2020s to 2030s, and is projected to disappear by the 2030s to 2040s. The suitable habitats for the temperate coral communities are also becoming smaller, although at a less pronounced rate due to their higher tolerance for low Ωarag.

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