Mesophotic coral ecosystems in the Hawaiian Archipelago

Coral Reefs ◽  
2010 ◽  
Vol 29 (2) ◽  
pp. 361-367 ◽  
Author(s):  
J. Rooney ◽  
E. Donham ◽  
A. Montgomery ◽  
H. Spalding ◽  
F. Parrish ◽  
...  
PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e2475 ◽  
Author(s):  
Richard L. Pyle ◽  
Raymond Boland ◽  
Holly Bolick ◽  
Brian W. Bowen ◽  
Christina J. Bradley ◽  
...  

Although the existence of coral-reef habitats at depths to 165 m in tropical regions has been known for decades, the richness, diversity, and ecological importance of mesophotic coral ecosystems (MCEs) has only recently become widely acknowledged. During an interdisciplinary effort spanning more than two decades, we characterized the most expansive MCEs ever recorded, with vast macroalgal communities and areas of 100% coral cover between depths of 50–90 m extending for tens of km2in the Hawaiian Archipelago. We used a variety of sensors and techniques to establish geophysical characteristics. Biodiversity patterns were established from visual and video observations and collected specimens obtained from submersible, remotely operated vehicles and mixed-gas SCUBA and rebreather dives. Population dynamics based on age, growth and fecundity estimates of selected fish species were obtained from laser-videogrammetry, specimens, and otolith preparations. Trophic dynamics were determined using carbon and nitrogen stable isotopic analyses on more than 750 reef fishes. MCEs are associated with clear water and suitable substrate. In comparison to shallow reefs in the Hawaiian Archipelago, inhabitants of MCEs have lower total diversity, harbor new and unique species, and have higher rates of endemism in fishes. Fish species present in shallow and mesophotic depths have similar population and trophic (except benthic invertivores) structures and high genetic connectivity with lower fecundity at mesophotic depths. MCEs in Hawai‘i are widespread but associated with specific geophysical characteristics. High genetic, ecological and trophic connectivity establish the potential for MCEs to serve as refugia for some species, but our results question the premise that MCEs are more resilient than shallow reefs. We found that endemism within MCEs increases with depth, and our results do not support suggestions of a global faunal break at 60 m. Our findings enhance the scientific foundations for conservation and management of MCEs, and provide a template for future interdisciplinary research on MCEs worldwide.


2020 ◽  
Vol 125 (5) ◽  
Author(s):  
David Lindo‐Atichati ◽  
Yanli Jia ◽  
Johanna L. K. Wren ◽  
Andreas Antoniades ◽  
Donald R. Kobayashi

2017 ◽  
Vol 28 (1) ◽  
pp. 146-157 ◽  
Author(s):  
Alan M. Friedlander ◽  
Mary K. Donovan ◽  
Kostantinos A. Stamoulis ◽  
Ivor D. Williams ◽  
Eric K. Brown ◽  
...  

Data in Brief ◽  
2018 ◽  
Vol 19 ◽  
pp. 896-920 ◽  
Author(s):  
Richard Bryce ◽  
Ignacio Losada Carreño ◽  
Andrew Kumler ◽  
Bri-Mathias Hodge ◽  
Billy Roberts ◽  
...  

1986 ◽  
Vol 1 (2) ◽  
pp. 233-240 ◽  
Author(s):  
Keith E. Chave ◽  
Charles L. Morgan ◽  
William J. Green

2018 ◽  
Vol 33 (2) ◽  
pp. 27
Author(s):  
Vassil Zlatarski

After a pioneering study of Jamaican coral reefs, the Cuban archipelago was the second to be surveyed by SCUBA for scleractinian corals and reef life to a depth of 90m, sampling all phenotypes.  Regrettably, the published data on the mesophotic coral ecosystems (MCEs) of Cuba, collected 1970 to 1973, have been ignored.  This is also true for the published data on the MCEs of the Mexican Yucatán Peninsula, collected 1983 to 1984.  These two investigations described immense areas exhibiting a rich continuum of coral life, from shallow reefs into MCEs without scleractinian faunal break, and no depth-specialists species complex.  Instead, a morphological changeover of three-dimensional corallum into two-dimensional corallum was observed and documented.  The existing data on the Cuban and Mexican MCEs (now 45 and 34 years old, respectively) present a unique opportunity for long-term status and ecosystem trends analysis.  MCEs require terminological clarification from collaborative efforts to effectively use the globally available data.Investigaciones sobre ecosistemas coralinos mesofóticos en Cuba (1970-1973) y México (1983-1984)RESUMEN. Después de un estudio pionero en arrecifes de Jamaica sobre corales escleratinios y vida arrecifal, el archipiélago cubano fue el segundo que se estudió mediante buceo SCUBA a profundidades de hasta 90m, incluyendo muestras de todos los fenotipos. Infortunadamente, los datos publicados sobre ecosistemas coralinos mesofóticos (ECM), recabados entre 1970 y 1973 han sido soslayados, al igual que los datos publicados sobre los ECM de la Península de Yucatán, México, recabados entre 1983 y 1984.  Ambas investigaciones describen áreas inmensas que exhiben un rico continuo de vida coralina, desde arrecifes someros hasta ECM sin ruptura en la fauna escleratinia y sin complejos de especies especialistas de profundidad. En vez de esto, se observó y documentó un reemplazamiento de formas tridimensionales de corales por formas bidimensionales.  La información existente sobre ECM cubanos y mexicanos con antigüedades de 45 y 34 años, respectivamente ofrecen una oportunidad única para realizar análisis sobre estatus a largo plazo y tendencias de ecosistema.  Los ECM requieren aclaración terminológica de esfuerzos de colaboración para utilizar efectivamente los datos disponibles globalmente.


Eos ◽  
2015 ◽  
Vol 96 ◽  
Author(s):  
Christopher Kelley ◽  
John Smith ◽  
Joyce Miller ◽  
Jonathan Tree ◽  
Brian Boston ◽  
...  

New surveys help untangle the complex geologic history of the Hawaiian Archipelago and provide hints about where to seek marine life.


1920 ◽  
Vol 8 (1) ◽  
pp. 67
Author(s):  
V. MacCaughey
Keyword(s):  

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