Carol of Alarm Bells Ter Communication with the Public
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JUNGLE BIRDS YOUR INDEPENDENT SOURCE FOR BAY-DELTA NEWS & VIEWS Eradicating invasive spartina—eastern smooth cordgrass (S. alterniflora) and its hybrid offspring overgrowing the Bay’s tidal wetlands—is a tough proposition. The Invasive Spartina Project has had mixed results with herbicides. “Mowing does noth- ing but irritate the plants and make them angry,” says the Spartina Project’s Erik Grijalva. As a further complication, those spartina jungles may be full of endangered California clapper rails. According to Grijalva, at least three Bay sites share high rail densities and significant spartina infestations: Alameda’s Elsie Roemer Sanctuary (12 rails), Oakland’s Arrowhead Marsh (72), and Colma Creek south of S.F. for managing Bay-Delta resources, including bet- International Airport (96). East Bay Regional Carol of Alarm Bells ter communication with the public. “We spend Parks District biologist Steve Bobzien says $100 million per year explaining why agriculture Amid the metaphorical popping of cham- high-tide surveys and call counts show a is important,” he added. “But we spend less pagne corks at this year’s “Celebrating Science fourfold increase in rail numbers at than 10% of that telling people why oceans and and Stewardship” State of the Estuary Arrowhead since 1993, which appears estuaries are valuable.” Schubel also advised the Conference in Oakland’s Henry J. Kaiser strongly associated with an increase in veg- crowd that we need to be Convention Center, scientists etation cover provided by spartina. Trends flexible in managing water and policymakers sounded a at Hayward’s Cogswell Marsh are similar. At resources. But the bottom series of SOS calls to an audi- Roemer and Cogswell, the rails nest in inva- line, he said, is that we must ence of more than 700. The sive spartina instead of native vegetation. build better collaborations loudest cries were centered on “People could The relationship is less clear elsewhere, and among researchers, deci- the Delta and the ways it is a recent Bay-wide rail survey—the first since sionmakers, and stewards. changing physically, politically, understand 1992-93—by Leonard Liu and other PRBO Stewards were also on Conservation Science biologists found no and ecologically, and how the future of the Central Valley—as that if we the mind of Joe Bodovitz, statistical association between rail densities the former—and first—exec- and vegetation types. ag land or urban sprawl—will affect the Bay-Delta Estuary. filled the Bay, utive director of both BCDC What’s the attraction of spartina? “Native and the Coastal The S.F. Regional Board’s Larry or non-native, the birds could care less,” Commission, who began his Kolb kicked things off by asking Bobzien says. Invasive spartina provides things would talk by chronicling the whether Californians are as “clue- thermal cover and protection from preda- sometimes-volatile political less” in managing our water tors, and buffers habitat against extreme be greatly process that led to the cre- systems—and the Delta—as those high tides and winter storm flows. In the ation of CALFED. Under who channelized the Mississippi long run, it may degrade the quality of the changed.” former governor Pat River, cutting it off from its flood- rails’ habitat, choking off tidal channels Brown’s reign—which plains and depriving the wetlands where they forage. But Bobzien feels that’s Bodovitz termed the at its mouth of sediment, thereby unproven, noting the presence of healthy “golden era of California”— contributing to the damage from Hurricane clapper rail populations in East Coast the State Water Project and lots of other Katrina. In both places, said Kolb, we are mis- spartina marshes. infrastructure we benefit from today got built. managing water and marshes, building on But things are changing, he warned, stressing For the Spartina Project, working around subsided marshy soils—on floodplains—and that as the state’s population burgeons, the the rails demands a special approach: no then, in a vicious cycle, building ever bigger lev- Central Valley will need more water and will play removal during the February-August breed- ees and dams to protect the homes and a more prominent role in water plumbing and ing season, a multiyear phased treatment, infrastructure behind them. and revegetation with native species like politics. The most critical issue facing the Bay- gumplant to provide cover. Other speakers following Kolb the first morn- Delta, said Bodovitz, is how much water Central Rail-free sites can be treated ing sounded more alarms—and called for action. Valley agriculture will keep or sell to urban areas. Jerry Schubel, from the Long Beach Aquarium of earlier in the season. The Echoing Schubel, Bodovitz said another criti- the Pacific, told the crowd that while we’ve Parks District will cal issue is stewardship. To protect the Delta, he made huge strides with science, we need to monitor the process said, we need a new Sylvia McLaughlin, Kaye make sure stewardship keeps pace. “Both scien- closely. “The hard part Kerr, and Esther Gulick, the three Berkeley tists and citizens need to be keepers of the is isolating variables women who kept the Bay from becoming a Estuary,” said Schubel. Everyone—“all sizes, that may also influ- parking lot. Saving the Delta is a much trickier shapes, races, NGOs, scientists, and politi- ence rail populations,” proposition, said Bodovitz. Recalling how the cians”—needs to get involved in making Bobzien cautions. The three women got people to send bags of sand decisions about the Bay-Delta Estuary, said PRBO Conservation to their legislators, he said, “People could under- Schubel. “If you’re not at the table,” he Science study, for stand that if we filled the Bay, things would be quipped, “you’re on the menu.” example, detected greatly changed. People got it—it was either a trend toward loss of small Lack of scientific understanding isn’t the going to be water or dry land.” But the Delta, populations in isolated problem at this point, said Schubel, who called marshes. Its next round of for a “compelling vision” and new approaches continues next page surveys will attempt to estab- Lisa Krieshok lish total numbers. JE VOLUME 14, NO. 6 DECEMBER 2005 2 DEC 2005 he said, is “light-years more complex” and gets whether it is possible to “move forward” with to themselves right now.” Solutions to the approached as a plumbing problem instead of as pumping more water from the Delta when we Delta’s problems cannot be imposed on the a landscape. don’t understand the recent decline in pelagic Delta, said Coglianese. “But we need some uni- One of the morning’s highlights—a preview organisms. “Do we put off decisions on [water fying force to bring us together. Right now, of Ron Blatman’s upcoming four-part television project] operations until we have more data, a we’re a region without leadership. We need the documentary “Saving the Bay”—showed exactly new ROD?” state to help us out. Most of us don’t even know what stewardship can do. Through historical and Whatever we do, said the Central Delta Water where the floodplains are.” current images of the Bay and interviews with Agency’s Tom Zuckerman, the solution needs to It takes scientists—not politicians—to delineate then-legislators and key environmental activists, be “Delta-centric” and come from the people floodplains. Yet one conference speaker, MWD’s the film describes how by the 1960s, almost who live in the Delta. Zuckerman added to Tim Quinn, said scientists should not be making one-third of the Bay had been filled for develop- Mount’s concerns about the onslaught of urban- policy. “Too often in California water, you have ment, with a 1959 Army Corps of Engineers ization. “We need to avoid making stupid, people sitting at the table crossing the line,” report predicting that that figure would be thoughtless decisions, such as putting people said Quinn. “We also have scientists crossing the closer to 70% by 2020. But then the three behind levees in tract houses,” said Zuckerman. line. The San Francisco Chronicle, Contra Costa women who founded Save the Bay stepped in. “But how do we get politicians—the state and Times, and Sacramento Bee are not good places On the conference’s second day, speakers federal government—to focus on the Delta? It to publish your science.” Quinn’s comments focused on the disconnect between the Delta’s really is entitled to priority. It’s an environmental aside, most conference speakers said there was geomorphology and the state’s land use policies and recreational treasure.” an ever-increasing and more urgent need to (or lack thereof): As the Delta continues to sub- communicate science to the public. side, we continue to build more houses and PSEUDODIAPTOMUS TRENDS The science behind the recent decline in other structures behind levees, partly in response pelagic organisms in the Delta was a popular to the Bay Area’s expensive housing stock. “The 2000 topic. Ted Sommer outlined the Interagency Delta is the number-one most-subsided land- Ecological Program’s efforts to identify all possi- scape in the world relative to its size,” 1500 ble causes of the decline, from toxic algal announced U.C. Davis’ Jeff Mount. Mount pre- blooms and new pesticides to the timing and dicted that as urbanization continues to 1000 amount of Delta pumping to impacts from encroach upon the Delta—30,000 homes were exotic species. Posing another possible cause, just approved in flood-prone areas in Stockton 500 Sommer cited problems with two species of zoo- and another 8,500 in Lathrop—some of the plankton—Pseudodiaptomus forbesi and ecosystem services the Delta has provided in the 0 Limnoithona tetraspina.