Friday, October 2, 2009

Major Losses For Caribbean Reef Fish In Last 15 Years

“有些人會說,珊瑚礁確實不存在的功能在加勒比地區的生態系統了,”你說。 “最好的珊瑚礁我們今天的窮親戚什麼平均只有20年前。”

"Some people would argue that coral reefs really anymore," MarK Hay, professor of Georgia Institute of Technology said. "The best reefs we have toddon't exist as functional ecosystems in the Caribbean ay are poor cousins to what was only average 20 years ago."

«Certaines personnes prétendent que les récifs coralliens plus vraiment" Tu le dis. "Les récifs nous avons de mieux exister toddon't comme des écosystèmes fonctionnels dans les Caraïbes à destination et sont des cousins pauvres à ce qui était seulement dans la moyenne il ya 20 ans."

"Algunas personas argumentan que los arrecifes de coral en realidad no existen en el caribe nunca más", dijo Mark Hay, Professor of Biology at the Georgia Institute of Technology. "Las mejores arrecifes hemos dejado que dejen de existir como ecosistemas funcionales en el el Caribe, los actuales, son primos pobres de lo que era sólo hace un promedio de 20 años."

"If we want to have coral reefs in our future, we must ensure that we reduce damage to these ecosystems," she said(1). "On a personal level, this may mean not buying wild-caught aquarium fish and corals, not eating reef fish species that are declining, taking care not to anchor on reefs, and reducing our carbon emissions to help control climate change. But importantly, we need to let lawmakers and resource managers know that we care about these ecosystems and we need to push for changes in how they are managed."

ScienceDaily (Mar. 20, 2009) — By combining data from 48 studies of coral reefs from around the Caribbean, researchers have found that fish densities that have been stable for decades have given way to significant declines since 1995.
"We were most surprised to discover that this decrease is evident for both large-bodied species targeted by fisheries as well as small-bodied species that are not fished," said Michelle Paddack(1) of Simon Fraser University in Canada. "This suggests that overfishing is probably not the only cause."
"...the recent declines may be explained by drastic losses in coral cover and other changes in coral reef habitats that have occurred in the Caribbean over the past 30 years.(...)"
Scientists had previously documented historical declines in the abundance of large Caribbean reef fishes that probably reflect centuries of overexploitation. However, effects of recent degradation of reef habitats on reef fish had not been established before now.
The study appears online on March 19th in Current Biology, a Cell Press publication

Paddack et al. Recent Region-wide Declines in Caribbean Reef Fish Abundance. Current Biology, 2009; DOI: 10.1016/j.cub.2009.02.041
Adapted from materials provided by Cell Press, via EurekAlert!, a service of AAAS.
Another article:
Diversity Of Plant-eating Fishes May Be Key To Recovery Of Coral Reefs
"Of the many different fish that are part of coral ecosystems, there may be a small number of species that are really critical for keeping big seaweeds from over-growing and killing corals," explained Mark Hay, the Harry and Linda Teasley Professor of Biology at the Georgia Institute of Technology. "Our study shows that in addition to having enough herbivores, coral ecosystems also need the right mix of species to overcome the different defensive tactics of the seaweeds."
Georgia Institute of Technology Research News (2008, October 10). Diversity Of Plant-eating Fishes May Be Key To Recovery Of Coral Reefs. ScienceDaily. Retrieved October 2, 2009, from­ /releases/2008/10/081008113434.htm

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