Georgia Latino Population Swells

/PRNewswire/ -- The Latino population in Georgia experienced exceptional growth since 2000, increasing 96% in the last decade, according to a National Association of Latino Elected and Appointed Officials (NALEO) Educational Fund analysis of newly released Census 2010 data.

Between 2000 and 2010, while the state's overall population grew 18% from 8.2 million to 9.7 million, the Latino population increased from 435,227 to 853,689.

Latinos account for 28% of overall population growth in the state over the last ten years, and represent 8.8% of the state's population.

"These numbers show that Latinos are an integral part of the state's future economic well-being," said State Representative Pedro Marin. "In order to ensure the prosperity and well-being of all residents of Georgia, our policies must promote the economic and civic progress of Latinos."

Many of Georgia's ten largest incorporated areas – which include the state's cities – also have significant Latino populations, including Roswell (17%), Sandy Springs (14%), and Athens-Clarke County (10%), which the U.S. Census Bureau classifies as the state's fastest-growing big city. Additionally, more than half (57%) of Georgia's Latino residents live in the ten largest counties, including Fulton – home to Atlanta.

The data also found the Latino population is significantly younger than the non-Latino population.

"The newly released numbers suggest that the Latino community in our state placed a high priority on being counted in the 2010 Census and of being full participants in the political process in our country," said Jerry Gonzalez, Executive Director of the Georgia Association of Latino Elected Officials (GALEO).

"As Georgia now undertakes the redistricting process, it is time to make sure Latinos can embrace the opportunity to translate those Census numbers into full and fair representation."

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UGA Study Reveals Ecosystem-Level Consequences of Frog Extinctions

In some parts of the tropics, frogs are the most abundant land vertebrates. This peculiar-looking casque-headed tree frog is one of the estimated hundreds of species of tropical frogs.

Photo by Scott Connelly/UGA

Streams that once sang with the croaks, chirps and ribbits of dozens of frog species have gone silent. They’re victims of a fungus that’s decimating amphibian populations worldwide.

Such catastrophic declines have been documented for more than a decade, but until recently scientists knew little about how the loss of frogs alters the larger ecosystem. A University of Georgia study that is the first to comprehensively examine an ecosystem before and after an amphibian population decline has found that tadpoles play a key role keeping the algae at the base of the food chain productive.

“Many things that live in the stream depend on algae as a base food resource,” said lead author Scott Connelly, a doctoral student who will graduate in December from the UGA Odum School of Ecology. “And we found that the system was more productive when the tadpoles were there.”

The results, which appear in the early online edition of the journal Ecosystems, demonstrate how the grazing activities of tadpoles help keep a stream healthy. The researchers found that while the amount of algae in the stream was more than 250 percent greater after the amphibian population decline, the algae were less productive at turning sunlight and nutrients into food for other members of the ecosystem. Without tadpoles swimming along the streambed and stirring up the bottom, the amount of sediment in the stream increased by nearly 150 percent, blocking out sunlight that algae need to grow.

The study is part of a larger effort known as the Tropical Amphibian Declines in Streams (TADS) project, which also involves researchers from Southern Illinois University, Drexel University and the University of Alabama. The project is now in its third round of funding by the National Science Foundation and was initiated by Catherine Pringle (UGA Odum School of Ecology) and Karen Lips (Southern Illinois University) in 2000 through a Small Grant for Exploratory Research (SGER) from the NSF. Connelly and Pringle are monitoring in-stream effects of the population decline on algae, while other team members are studying how the loss of frogs impacts other organisms and the transfer of energy between streams and the terrestrial communities that surround them. Preliminary data show that the number of snakes that feed on frogs, for example, has plummeted after the population decline.

“We were there before, during and after the extinction event and were able to look at the ecosystem and measure how it changed,” said Pringle, Distinguished Research Professor in the Odum School and study co-author. “Very rarely have scientists been able to do that with respect to any organism.”

The chytrid fungus responsible for declines has steadily marched southeast across Costa Rica and through much of Panama like a storm front, killing up to 90 percent of frogs in afflicted streams. In 2003, the team set up research sites on two streams in the pristine and lush highlands of Panama. One study site had already suffered a catastrophic amphibian decline, while the other had a healthy population but, based on its location, was directly in the path of the fungal disease.

In the first stage of their research, Connelly and Pringle assessed ecosystem changes that occur when tadpoles are experimentally excluded from small areas of both the healthy stream and the frogless stream. They found that the absence of the tadpoles resulted in more sediment and less productive algae.

In late 2004, frogs in the formerly healthy stream began dying. The team reassessed the stream and found that impact of the frog die-off was even greater than they had predicted in their exclusion studies. “We predicted the direction of the change,” Pringle said, “but underestimated its magnitude.”

The UGA research team is continuing to monitor the health of the streams to get valuable, long-term data. So far the stream has not rebounded. “It’s still sad going back,” Connelly said, to which Pringle added: “Once the frogs die, it’s like an incredible silence descends over the whole area. It’s eerie.”

To date, scientists have not found a way to stop the spread of the fungus in the wild. Broadly applying a fungicide to an entire watershed, Connelly said, would kill beneficial fungi that are necessary for a healthy ecosystem.

But scientists can cure individual frogs in captivity by simply swabbing them with a fungicide. Connelly has worked to protect frogs through Amphibian Ark, a global effort supported by zoos, botanical gardens, aquariums and research institutions that aims to ensure the survival of amphibians by collecting and breeding them. The Atlanta Botanical Garden is one of the key breeding sites.

“The one speck of hope is that if we’re able to collect some of these rare animals, we can cure them,” Connelly said. “As long as we have the money to keep a breeding program going, in the future it might be possible to reintroduce them into the wild.”

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U.S. Census Bureau: New Orleans Population Continues Katrina Recovery; Houston Leads in Numerical Growth

GFP Note: Atlanta increases in population while Columbus decreases its numbers.

(BUSINESS WIRE)--U.S. Census Bureau: New Orleans, hard-hit by Hurricane Katrina in 2005, was the fastest-growing large city in the nation between July 1, 2006, and July 1, 2007. This follows the city having the largest rate of population loss since 2000.

Houston, another city near the Gulf Coast, led the nation’s cities in numerical increase during the period. New Orleans had the fifth largest numerical growth.

U.S. Census Bureau estimates released today show New Orleans’ population rose by 13.8 percent to 239,124 during the one-year period, to lead all cities with populations of 100,000 or more in rate of increase. New Orleans was followed by Victorville, Calif., whose population climbed 9.5 percent to 107,221. Victorville, in Southern California’s San Bernardino County, saw its population pass the 100,000 mark for the first time in 2007.

Three Texas cities made the fastest-growing top 10: McKinney and Denton (near Dallas, ranking third and 10th, respectively) and Killeen (near Austin, ranking sixth). Rounding out the top 10 were North Las Vegas, Nev. (fourth); Cary, N.C. (near Raleigh, ranking fifth); Port St. Lucie, Fla. (on the Atlantic coast, seventh); Gilbert, Ariz. (near Phoenix, eighth); and Clarksville, Tenn. (on the Kentucky border, ninth).

Houston added 38,932 residents between July 1, 2006, and July 1, 2007, to lead the nation in numerical population increase. Houston, which reached 2.2 million, was joined by three other Texas cities: San Antonio (third), Fort Worth (fourth) and Austin (eighth). North Carolina also contributed multiple cities to the list: Charlotte (ninth) and Raleigh (10th). Rounding out the top 10 were Phoenix (second), New Orleans (fifth), New York (sixth) and Atlanta (seventh).

New York continued to be the nation’s most populous city, with 8.3 million residents. This was more than twice the population of Los Angeles, which ranked second at 3.8 million. Chicago, with 2.8 million, was third, followed by Houston and Phoenix (1.6 million).

Other highlights:

2006-2007

New to the listing of the 25 most populous cities in 2007 is Nashville-Davidson, Tenn. (a city-county consolidation), 25th with a population of 590,807. In addition, Fort Worth moved up to 17th place; Charlotte to 19th; and Milwaukee to 22nd. Washington fell out of the top 25.
California and Texas each placed five cities on the listing of the 25 fastest-growing and on the list of the 25 biggest numerical gainers between 2006 and 2007.

Other cities making both lists of the 25 largest numerical gainers and the 25 fastest-growing from 2006 to 2007: New Orleans; Victorville; North Las Vegas; Port St. Lucie; Gilbert; Fort Worth; Raleigh; Atlanta; Henderson, Nev.; and Bakersfield, Calif.

Columbus, Ga., had the largest percentage decrease from 2006 to 2007. Its population decline is attributable to a decline in the population living in military barracks. Columbus was followed by Baton Rouge, La.; Hollywood, Fla.; Jackson, Miss.; and Coral Springs, Fla. Six of the 25 fastest-losing cities were in Florida.

Cleveland suffered the largest numerical decline in population from 2006 to 2007, followed by Columbus, Ga.; Baton Rouge; Philadelphia; and Baltimore.

2000-2007

McKinney, Texas, was the nation’s fastest-growing city between April 1, 2000, and July 1, 2007, as its population more than doubled to 115,620. North Las Vegas was second, as its population rose 83.6 percent to 212,114. Eight of the top 25 were in California: Victorville, Elk Grove, Irvine, Roseville, Rancho Cucamonga, Moreno Valley, Bakersfield and Fontana.

New York was the largest numerical gainer, adding 265,873 residents over the period. Houston, which added 233,876, was second. Five other Texas cities made the top 25: San Antonio, Fort Worth, Austin, McKinney and Dallas.

New Orleans experienced both the largest rate of loss and largest numerical decline during the period, as its population fell 50.7 percent (from 484,674 to 239,124). Cleveland had the second greatest rate of loss (8.3 percent, from 477,472 to 438,042), with Philadelphia ranking second in numerical decrease (from 1,517,550 to 1,449,634).