Tag: "reefs" at biology news
Coral stress 'like never in history'
...es and The University of Queensland, of fossilized reefs
in Papua New Guinea show how often the reefs
were ‘wiped out?by disastrous events in past times. "What we found was in stark contrast to what ...
Rising ocean temperatures, pollution have oysters in hot water
...s. "We can't even imagine the expanse of oyster reefs
100-200 years ago and their impact on the ecosyste...e species, such as blue crabs, use oyster beds and reefs
as nursery areas and as feeding grounds." The oyster beds are also important to a variety of marine ...
First Biodiversity Census of coral reef ecosystems in the NW Hawaiian Islands
...l History Museum of Los Angeles County. Coral reefs
are highly threatened repositories of extraordinar...agnitude the number of species living in the coral reefs
around the globe. Our best guess is somewhere between 1 and 9 million species based on comparisons ...
Reef warns of sea level rise
...able, has a number of both living and fossil coral reefs
along it, the results of the Leeuwin current bring...er many tens of thousands of years. Together these reefs
indicate what occurred during the last big sea level rise. "At the time when this reef grew we kno...
Ongoing collapse of coral reef shark populations
...rks are so-called apex predators on tropical coral reefs
and are therefore of significant potential importa.... Their findings show that reef shark abundance on reefs
open to fishing are about ten times lower than on unfished reefs. Moreover, high reef shark abundanc...
Ocean sampling yields environmental sources of coral symbionts
.... In response to environmental stresses, coral reefs
around the world are in a decline due in large part to coral bleaching—loss of the symbiotic photosynthetic algae that live within corals and provide much of their energy. These symbiotic algae are essential to their host’s survival, but many corals ...
NASA satellite data helps assess the health of Florida's coral reef
...irst comprehensive assessment of the resiliency of reefs
along the entire National Marine Sanctuary that st... Keys. Scientists are trying to determine why some reefs
are resilient to environmental changes and impacts. The work may also identify ways to care for reef...
Seagrass ecosystems at a 'global crisis'
...itats ?including salt marshes, mangroves and coral reefs
?receive 3 to 100-fold more media attention than seagrass systems. "Translating scientific understanding of the value of seagrass ecosystems into public awareness, and thus effective seagrass management and restoration, has not been as effective a...
CSIRO imagery shows Outer Great Barrier Reef at risk from river plumes
... terrestrial material to all areas of the affected reefs
and reef waters. Managers of the GBR have long been examining the effects of run-off of sediments, including pesticides, herbicides and fertilizers, on the reef corals. The images challenge the traditional school of hydrological modelling, whi...
Baby fish 'smell their way home'
...on how the breathtaking diversity of fish on coral reefs
has arisen. This has major implications for how reefs
are managed. "The babies of many coral fish species are swept off their home reef by ocean curren...
New species of snapper discovered in Brazil
...per is actually a new species discovered among the reefs
of the Abrolhos region of the South Atlantic Ocean...t but interdependent marine habitats such as coral reefs
and mangroves. "This discovery that a large, popular fish is a species new to science shows how l...
Massive coral death attributed to earthquake
...ies (ARCCoERS) investigated the condition of coral reefs
in Pulau Simeulue and Pulau Banyak off Aceh, Indon... March 2005 earthquake, exposing most of the coral reefs
which ringed the island. Dr Stuart Campbell coordinator of the Wildlife Conservation Society –In...
Study finds surfing safer than soccer
...h more forgiving upon impact than one covered with reefs
or rocks," says Nathanson. The paper cites that establishing an injury rate for surfing is not just of academic or general interest, but also has implications for the insurance industry and for schools that may want to start a surfing team. "T...
Corals that can fight global warming may one day help fragile reefs
...appear to be facilitating fatal epidemics in coral reefs
across the globe, according to Harvell and her co-researchers. For example, in 2005, the Caribbean experienced unusually warm weather and a spate of coral deaths caused directly by temperature stress and indirectly by opportunistic infections contrac...
Palau's coral reefs show differential habitat recovery following the 1998 bleaching event
...ientists recording the long-term recovery of coral reefs
in Palau and elsewhere. "It appears that coral reefs
are very resilient and can bounce back magnificently if subjected to good management practices and 1...
Healthy coral reefs hit hard by warmer temperatures
..., tracked an infection called white syndrome in 48 reefs
along more than 900 miles (1,500 kilometers) of Australia's coastline. The colorful coral colonies that attract visitors to the Great Barrier Reef live atop a limestone scaffolding built from the calcium carbonate secretions of each tiny coral, or...
Why do oysters choose to live where they could be eaten?
...if oyster larvae are attracted to settle on oyster reefs
among adults of the same species because of the po...by adult oysters and how larvae actively settle on reefs
helped solved the puzzle. Oyster feeding currents are actually very weak, so while they will readily...
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