Toplam 15 içerik listeleniyor
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Tough times for the tree of life on coral reefs
In terms of evolutionary history, less than a quarter of wrasse species receive minimum protection levels. Marine scientists are calling for a re-think of how marine protected areas (MPAs) are planned and coordinated, following a global assessment of the conservation of tropical corals and fishes.
https://www.biyologlar.com/tough-times-for-the-tree-of-life-on-coral-reefs-haber-8731 -
Coral reefs in Palau surprisingly resistant to naturally acidified waters
Ocean researchers working on the coral reefs of Palau in 2011 and 2012 made two unexpected discoveries that could provide insight into corals' resistance and resilience to ocean acidification, and aid in the creation of a plan to protect them. The team collected water samples at nine points along a transect that stretched from the open ocean, across the barrier reef, into the lagoon and then into the bays and inlets around the Rock Islands of Palau, in the western Pacific Ocean. With each...
https://www.biyologlar.com/coral-reefs-in-palau-surprisingly-resistant-to-naturally-acidified-waters -
Surprising global species shake-up discovered
The diversity of the world's life forms — from corals to carnivores — is under assault. Decades of scientific studies document the fraying of ecosystems and a grim tally of species extinctions due to destroyed habitat, pollution, climate change, invasives and overharvesting. Which makes a recent report in the journal Science rather surprising. Nick Gotelli, a professor at the University of Vermont, with colleagues from Saint Andrews University, Scotland, and the University of Maine,...
https://www.biyologlar.com/surprising-global-species-shake-up-discovered -
Rethinking the reef
A new study by biologists at San Diego State University and Scripps Institution of Oceanography shows that inhabited coral islands that engage in commercial fishing dramatically alter their nearby reef ecosystems, disturbing the microbes, corals, algae and fish that call the reef home. The study's lead author, Linda Wegley Kelly, is a postdoctoral scholar in the lab of SDSU virologist Forest Rohwer. For the study, she looked at seawater samples collected from the surfaces of reefs surrounding...
https://www.biyologlar.com/rethinking-the-reef -
Great Barrier Reef marine reserves combat coral disease
A new and significant role for marine reserves on the Great Barrier Reef has been revealed, with researchers finding the reserves reduce the prevalence of coral diseases. It's been known for some time that marine reserves are important for maintaining and enhancing fish stocks, but this is the first time marine reserves have been shown to enhance coral health on the Great Barrier Reef. Researchers from the ARC Centre of Excellence for Coral Reef Studies at James Cook University found that...
https://www.biyologlar.com/great-barrier-reef-marine-reserves-combat-coral-disease -
Bering Sea hotspot for corals and sponges
North of the Aleutian Islands, submarine canyons in the cold waters of the eastern Bering Sea contain a highly productive "green belt" that is home to deep-water corals as well as a plethora of fish and marine mammals. Situated along the continental slope, the area also supports a thriving -- but potentially environmentally damaging -- bottom-trawling fishing industry that uses large weighted nets dragged across the seafloor to scoop up everything in their path. A new study, conducted by...
https://www.biyologlar.com/bering-sea-hotspot-for-corals-and-sponges -
Tough times for the tree of life on coral reefs
Marine scientists are calling for a re-think of how marine protected areas (MPAs) are planned and coordinated, following a global assessment of the conservation of tropical corals and fishes. Researchers from the Australian Research Council Centre of Excellence for Coral Reef Studies (Coral CoE), at James Cook University in Townsville, analysed the extent to which the evolutionary histories of corals and fishes are protected, rather than looking at individual species. "Our interest was in...
https://www.biyologlar.com/tough-times-for-the-tree-of-life-on-coral-reefs -
Herpes outbreak, other marine viruses linked to coral bleaching event
A study at Oregon State University has concluded that significant outbreaks of viruses may be associated with coral bleaching events, especially as a result of multiple environmental stresses. One such event was documented even as it happened in a three-day period. It showed how an explosion of three viral groups, including a herpes-like virus, occurred just as corals were bleaching in one part of the Great Barrier Reef off the east coast of Australia. The findings, reported in Frontiers in...
https://www.biyologlar.com/herpes-outbreak-other-marine-viruses-linked-to-coral-bleaching-event -
Biological 'clock' discovered in sea turtle shells
Radiocarbon dating of atomic bomb fallout found in sea turtle shells can be used to reliably estimate the ages, growth rates and reproductive maturity of sea turtle populations in the wild, a new study led by Duke University and NOAA researchers finds. The technique provides more accurate estimates than other methods scientists currently use and may help shed new light on factors influencing the decline and lack of recovery of some endangered sea turtles populations. "The most basic questions...
https://www.biyologlar.com/biological-clock-discovered-in-sea-turtle-shells -
Coral 'toolkit' allows floating larvae to transform into reef skeletons
In a study published today, researchers from the University of Hawai'i at Mānoa (UHM), Rutgers University,
https://www.biyologlar.com/coral-toolkit-allows-floating-larvae-to-transform-into-reef-skeletons -
Mercanlar Plastik Yiyorlar
Avustralya’dan araştırmacılar resiflerde bulunan mercanların mikro-plastik çöpleri yediklerini keşfettiler.
https://www.biyologlar.com/mercanlar-plastik-yiyorlar -
İnsanlar eşey hücrelerini embriyo olarak geliştiriyorken mercanlarda bu durum neden farklı?
İnsan eşey hücrelerini veya gametlerini, gelişmekte olan embriyonun başında üretilir.
https://www.biyologlar.com/insanlar-esey-hucrelerini-embriyo-olarak-gelistiriyorken-mercanlarda-bu-durum-neden-farkli -
Mercanlar düşündüğümüzden çok daha yaşlı
Penn State'teki araştırmacılar, Ulusal Deniz Balıkçılık Servisi ve Dial Cordy & Associates'e göre, mercan genotipleri binlerce yıldır hayatta kalabildiler. Görel fotoğraf: William Precht, Dial Cordy & Associates, Inc.
https://www.biyologlar.com/mercanlar-dusundugumuzden-cok-daha-yasli -
Mercanlar düşündüğümüzden çok daha yaşlı
Penn State'teki araştırmacılar, Ulusal Deniz Balıkçılık Servisi ve Dial Cordy & Associates'e göre, mercan genotipleri binlerce yıldır hayatta kalabildiler. Görel fotoğraf: William Precht, Dial Cordy & Associates, Inc.
https://www.biyologlar.com/mercanlar-dusundugumuzden-cok-daha-yasli -
Derin denizlerin eşsiz güzellikleri "Mercan Resifleri"
Mercan kayalıkları, sadece biyolojik çeşitlilik açısından değil, aynı zamanda turizm, balıkçılık ve kıyı koruma gibi insan faaliyetlerine de büyük ekonomik ve ekolojik katkılarda bulunurlar. Bu nedenle, bu önemli ekosistemlerin korunması ve sürdürülebilir bir şekilde yönetilmesi büyük bir önem taşır.
https://www.biyologlar.com/derin-denizlerin-essiz-guzellikleri-mercan-resifleri