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Salt Marsh-Ing; Bat The Newsletter of the Hayward Shoreline Interpretive Center Volume 33, Number 3 SUMMER 2018 SUMMER A facility of Hayward Salt Marsh-ing Area Recreation & B y K y le B lo o m s t e r Park District or children, especially for those of Of course, as with any other system the iPad generation, the vastness in nature, death is followed by birth. UPCOMING EVENTS of geological time can be tough Time is cyclical, and history is bound to AT THE SHORELINE to comprehend. During low tide, repeat itself. Just as we wait, hopefully, visitors to the Shoreline can marvel at the for the return of the barn swallows to the JUNE Fmuddy capillaries that trickle over the silt- Interpretive Center, who gobble up flies • 17th Annual Father’s Day Camp Out laden channel, adjacent to the Interpretive and amuse us with their antics, we also wait Sat. 6/16 - Sun. 6/17 Center, and envy the nimble shorebirds for the replenishing return of washed-off 3:00pm-11:00am who dance and scurry over the oozing dirt from the East Bay hills and the Sierra. See inside for program details. “quicksand.” The gleaming, fractal-like Gentle sedimentation – from the great h a a JULY y ni swirls of Bay water and mud captivate the river systems of the Sacramento and the w a o r • You’re Invitedr d, to c atheli f rambunctious kids – it’s like art with no San Joaquin, as well as from the smaller Hen Party artist, and they behold its weird beauty. creeks – is a welcome, counterbalancing Sat. 7/14, 9:30am-12:30pm “Friends,” I say, “have you ever played relief from the raking of the tides. But AUGUST with sand and water in a sandbox?” moderation is key. Leopard Shark • “Yes!” they reply. Rougher, faster sedimentation, and Feeding Frenzy abrupt drops in salinity, could become the Sun. 8/19, 2:00pm-3:00pm “Well, this whole salt marsh is kind of norm over the next 50 years. By the end of like a sand box. Just like when you splash this century, the Intergovernmental Panel SCHOOL FIELD TRIPS water on your castles and moats and wash on Climate Change (the IPCC) estimates We conduct hands-on wetland them away, the tides pump salty ocean that the Bay Area will experience a 4 to 9 education programs for local water through the Golden Gate. That °F rise in average temperatures. Warmer air schoolchildren. Call 510-670- pushes water up into the marsh and when can gather water vapor more easily. Thus, 7270 to talk with the naturalist the tide goes out, the water flows downhill staff about reservations for the we can expect to see harsher downpours 2018-2019 school year. to the Bay, washing away some of the mud during the rainy season, sweeping not just and carving all of these channels. more dirt into our creeks but also more INFO & HOURS “Eventually, this whole salt marsh will trash and noxious pollutants from our roads We are open to the public be transformed.” and backyards. Warmer springs also mean every Friday, Saturday and that the snowpack in the Sierra will melt Sunday from 10am to 5pm. The end of the Hayward Shoreline salt marsh, like the demise of the Sun, more rapidly, compounding this problem. has always been inevitable, but not really Although these violent freshwater 4901 Breakwater Avenue Hayward, CA 94545 in a scary sort of way. Salt marshes are surges would spike down salinity levels telephone: 510-670-7270 simply the interface between the geological periodically, the expected long-term email: [email protected] processes of weathering and erosion, and trend is an increase in the magnitude and on the web: the lunar and oceanic process of the tides. frequency of droughts, and an increase in HAYWARDREC.ORG In fact, “salt marsh” might be a term better overall Bay salinity, in particular areas like understood as an activity, rather than a the South Bay, which already experiences thing; a verb rather than a noun. relatively higher salinity levels. This could CONTINUED PAGE 4 2 H.S.I.C. STAFF H.A.R.D. BOARD & STAFF Adrienne De Ponte Superv. Naturalist Emily Pomeroy Naturalist Board of Directors General Manager Ann Graham Senior Naturalist James Aliberti Naturalist Louis Andrade Paul McCreary Lauren Porter Dir. of Animal Care Zoey Moran Student Aide Paul Hodges Superintendent of Recreation Christine Cardosi Naturalist Karen Nguyen Student Aide Minane Jameson Karen McNamara Kyle Bloomster Naturalist Dominic Miller Student Aide Carol A. Pereira Nature Program Supervisor The Newsletter of the Hayward Shoreline Interpretive Center Volume 33, Number 3 Kamille Lang Naturalist Randy Gates Contributing Naturalist Rick Hatcher Jean Clark SUMMER 2018 SUMMER the recreational and environmental Salt Marsh-ing FROM PAGE 1 health of the whole ecosystem. Just as benefits they provide. It might also “good” bacteria minimize the build- disrupt unique wetland communities. be harder to catch that big fish, or spy up of harmful wastes, we humans can Plants like tule and cattails, found in our favorite species of bird. It might engineer methods of doing more with very biodiverse freshwater marshes, be harder to find clean, fresh water in less, of reversing the upward flow of could be replaced by hardier, salt- our wells and springs. gaseous carbon dioxide (the principle resistant species, like pickleweed The salt marsh is not static: it driver of observed warming). Hold and cordgrass. These plants support is a dynamic, ongoing process. Like elected leaders, business leaders and salt marshe with lower biodiversity. an animal, with its own vital spirit, it employers accountable for delivering Given the corresponding rise in sea seduces us and demands our respect, on their promises of supporting a levels, freshwater marsh communities just as we demand that it respect us. transition to an equitable low-carbon would need to move inland and Instead of choosing to behave like economy. Support community-wide establish themselves in low-laying viruses – recklessly manipulating the efforts to minimize waste, expand meadows – a challenging feat in the Earth to serve our own purposes – we greenbelts, and invest in public intensely urbanized Bay Area, where can choose to behave like beneficial transportation. Attune ourselves to real estate is at a premium for all “good” bacteria, taking only what the mud, water, birds and brine flies – species. The end result could be a loss we need, giving something back in even after we have left the Shoreline. of these valuable resources, including return, and securing the long-term Hayward Area Recreation and Park District PRSRT STD U.S. POSTAGE hayward shoreline interpretive center PAID HAYWARD, CA 4901 Breakwater Avenue Hayward, CA 94545 PERMIT NO 674 or Current Resident 2 On, In, and Near Water ARTIST: Lauren Porter OPENING RECEPTION: Saturday, July 28th, 2 pm to 4 pm On exhibit from July 28 through October 7, 2018 EXHIBIT HALL Lauren Porter’s collection of creative imaginings, photography and scientific illustrations are influenced by her adventures on, in, and near water. The artist’s professional training as a biologist, coupled with her passions for traveling, outdoor adventures, photography, and art, have come together to create a diverse collection of paintings, photos, and scientific illustrations. Her affinity for all things aquatic including organisms found on, in, and near water is vibrantly displayed. In addition to photography, Lauren Porter’s art includes a variety of media such as watercolor, acrylic, oil, pencil, charcoal, ink, and pastel. The Interpretive Center has a large exhibit space with vaulted inspiring the public. If you are an artist interested in holding an salt marsh salt ceilings and moveable display panels. We are always interested in art show at the Hayward Shoreline Interpretive Center, please any form of art exhibit that highlights local wildlife, wetland or Bay contact the Program Director at 510-670-7270. ecology, or any theme in keeping with our goal of educating and CREATURE FEATURE: VITAL STATS: Bat Ray Bat Ray id you know bat rays (Myliobatis SCIENTIFIC NAME: californica) are found here at Myliobatis californica ourD shoreline? Imagine you are a bat larger shark PREDATORS: ray, floating into the channels of the species like sevengill; great Hayward Shoreline during high tide. white sharks have been Are you hunting for food, looking for known to eat juvenile bay rays a mate, or just enjoying the tidal pull FOOD: crustaceans and into the marsh? mollusks BODY LENGTH: females These special rays have many unique have a wing-span up to 6 traits that help them survive in this special ecosystem found in the San Francisco Bay. They feet wide; males usually are love to stay close to the bottom, whether that be in an estuary, kelp forest, or right here along smaller in size the shoreline. On the seafloor, bat rays will leave a small canyon in their wake as they forage for mussels, clams, and crabs. Their mouth, nose and gill slits are all located on its underbelly, HOW TO OBSERVE: classifying it as a “bottom feeder” that creeps over animals living on the seafloor instead of At high tide along the hunting prey head on. The teeth and jaw of a bat ray are specially adapted to crush shells. The shoreline, look for the flapping wings along the water’s surface. bat ray’s teeth look very similar to a human tongue; their teeth have been fused together into plates that help quickly demolish even the toughest shells. Bat rays live a relatively solitary lifestyle but have been known to group together. When in those large groups, something compels the rays to break the surface of the water, making fantastic leaps into the sky and landing back in the safety of salt water.
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