Results 61 to 70 of about 2,185 (208)

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source

Changes in pigmentation associated with the bleaching of stony corals [PDF]

Limnology and Oceanography, 1989
Bleaching (loss of pigmentation) is a common response by corals to environmental stress. Changes in pigmentation and the processes that caused them were studied in Montastrea annularis during a natural bleaching event off southeast Florida. Chlorophyll c, peridinin, and diadinoxanthin levels were 35, 17, and 20 times higher in normal corals than in ...
Kleppel, G. S., Dodge, Richard E., Reese, C. J.   +2 more
openaire   +2 more sources

Upper bound limit analysis of coral reef limestone cavern roof stability incorporating a tension‐shear failure mechanism with tensile‐strength cut‐off

Deep Underground Science and Engineering, EarlyView.
For the roof of coral reef limestone caverns, a novel tension‐shear composite failure mechanism was developed. The most critical tensile crack model was identified using a hybrid optimization algorithm, and the stability of the cavern roof was analyzed accordingly.
Dongsheng Xu, Chenxu Li, Chuantan Hou
wiley   +1 more source

Benthic community structure on coral reefs exposed to intensive recreational snorkeling.

PLoS ONE, 2017
Chronic anthropogenic disturbances on coral reefs in the form of overfishing and pollution can shift benthic community composition away from stony corals and toward macroalgae.
Bobbie Renfro, Nanette E Chadwick
doaj   +1 more source

Global biogeography of zoantharians indicates a weak genetic differentiation between the Atlantic and Indo-Pacific oceans, and distinct communities in tropical and temperate provinces [PDF]

Frontiers of Biogeography
Biogeographic patterns for marine fishes and scleractinian stony corals are well-established, but it is still unclear whether these patterns apply to the understudied marine invertebrates. Here we investigate the distribution of zoantharians (=zoanthids),
Maria E. A. Santos, Hiroki Kise, Chloé Julie Loïs Fourreau, Bogdan Kiriukhin, Marcelo Visentini Kitahara, David Michael Baker, Robert J. Toonen, Pi Jen Liu, Arthur Chang, Ting-Hsuan Tu, Widiastuti, Kadek Miko Purnama Agustini, Brian W. Bowen, James D. Reimer   +13 more
doaj   +3 more sources

Marine Macroalgae as a Safe Healthy Food While Meeting Food Security Challenges Arising From Climate Changes

Food Safety and Health, EarlyView.
Planned harvesting and processing of marine macroalgae could meet future global food needs and mitigate fuel‐originated carbon dioxide responsible for climate change. Microalgal foods are nutritious and safe. The utilization of macroalgae would avoid environmental problems arising from the release of overgrowing macroalgae caused by heatwaves, which ...
Upali Samarajeewa
wiley   +1 more source

Amplification of Immune Genes in Ancient Stony Corals for Adapting to Unstable Marine Environments

Ocean-Land-Atmosphere Research
The Late Devonian period was known for disturbances such as lower temperatures and abnormal ocean carbon and nitrogen levels, leading to the extinction of approximately 21% of genus-level and 16% of family-level marine organisms.
Tianzhen Wu, Yanli Lei, Zhimin Jian
doaj   +1 more source

Benthic megafauna and the functioning of macroalgal forests and urchin barrens

Oikos, EarlyView.
Two temperate rocky reef food‐web models, representing the trophic diversity of the Mediterranean rocky reef communities, were built for the two stable states: macroalgal forests and barren grounds, which are characterized by opposite amounts of erect macroalgal biomass.
Chiara Bonaviri, Davide Agnetta, Stefania Pinna, Luigi Piazzi, Fabio Badalamenti, Giulia Ceccherelli, Davide Iaciofano, Manfredi Di Lorenzo, Francesco Di Trapani, Sabrina Lo Brutto, Vesna Mačić, Anna Maria Mannino, Francesco Mura, Luigi Musco, Laura Tamburello, Tomás Vega Fernández, Salvatrice Vizzini, Trevor Willis, Paola Gianguzza   +18 more
wiley   +1 more source

The Giant Barrel Sponge Xestospongia testudinaria Shelters a Number of Indo-Pacific Reef-Building Corals

Diversity
It is known that the giant barrel sponge (GBS) Xestospongia spp. may provide shelter or a micro-environment for multi-species coral colonies both in the Indo-Pacific and Atlantic regions.
Konstantin S. Tkachenko, Yury V. Deart, Do Huu Quyet   +2 more
doaj   +1 more source

THE CONDITION AND DISTRIBUTION OF STONY CORALS (Scleractinia corals) IN BANGKA WATER

Jurnal Ilmu dan Teknologi Kelautan Tropis, 2013
Bangka water is well known as the best tin producer in which there are many off-shore tin-mining activities conducted by both local people and tin companies. Such condition apparently brings negative impacts to marine life. Stony corals are considered as the major component of coral reef ecosystems whose condition is influenced by environmental ...
Rikoh Manogar Siringoringo, Tri Aryono Hadi   +1 more
openaire   +3 more sources