Ecological Restoration in the San Francisco Bay Area PDF Download
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Author: John J. Berger
Publisher:
ISBN: 9780962662300
Category : Environmental protection
Languages : en
Pages : 213
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Book Description
Author: John J. Berger
Publisher:
ISBN: 9780962662300
Category : Environmental protection
Languages : en
Pages : 213
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Book Description
Author: Ariel Rubissow Okamoto
Publisher: Univ of California Press
ISBN: 9780520268265
Category : History
Languages : en
Pages : 335
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Book Description
"After experiencing, researching, and writing about San Francisco Bay over a period of 50 years, I was certain that I knew all there was to know about it. I was wrong. Rubissow Okamoto and Wong have enabled me to see it in a new dimension--call it 3D or maybe even 4D." --Harold Gilliam, author of "San Francisco Bay" "This is an eminently readable account of the natural and human history of San Francisco Bay." --Rainer Hoenicke, Director, San Francisco Estuary Institute
Author: Annie Whittey
Publisher:
ISBN:
Category :
Languages : en
Pages : 94
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Book Description
Author:
Publisher:
ISBN:
Category : Conservation of natural resources
Languages : en
Pages : 368
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Book Description
Author: Julie Beagle
Publisher:
ISBN: 9781950313013
Category :
Languages : en
Pages : 260
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Book Description
As the climate continues to change, San Francisco Bay shoreline communities will need to adapt in order to build social and ecological resilience to rising sea levels. Given the complex and varied nature of the Bay shore, a science-based framework is essential to identify effective adaptation strategies that are appropriate for their particular settings and that take advantage of natural processes. This report proposes such a framework--Operational Landscape Units for San Francisco Bay.
Author: CALFED Bay-Delta Program
Publisher:
ISBN:
Category : Ecosystem management
Languages : en
Pages : 564
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Book Description
Author: Ann L. Riley
Publisher: Island Press
ISBN: 1610917405
Category : Architecture
Languages : en
Pages : 288
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Book Description
This book presents the author’s thirty years of practical experience managing long-term stream and river restoration projects in heavily degraded urban environments. Riley provides a level of detail only a hands-on design practitioner would know, including insights on project design, institutional and social context of successful projects, and how to avoid costly and time-consuming mistakes.
Author: Dylan Chapple
Publisher:
ISBN:
Category :
Languages : en
Pages : 97
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Book Description
Ecosystem restoration is increasingly used as a tool to offset the contemporary loss of habitat or help address past ecosystem destruction. However, given the complex, interconnected nature of ecosystem processes, restoration outcomes are notoriously variable. In certain ecosystems, minimal intervention may be able to produce desired restoration outcomes, but in others even high levels of intervention may not achieve restoration goals. Significant uncertainties remain about restoration trajectories over time and space. In order to effectively deliver the benefits these projects purport to offer, a detailed scientific understanding of restoration trajectories is necessary to inform the practice of ecological restoration moving. To better understand the factors influencing restoration trajectories in California's San Francisco Bay (SF Bay), I compare change in vegetation over time at an older restoration and reference site using field data, explore rates of change at a recently established wetland restoration site in the context of a historic drought using remote sensing of satellite imagery, and compare seed dispersal across three restoration and two reference sites. Addressing these questions will aid in the management of these projects and design of future project which will help improve conservation outcomes and address impacts associated with sea level rise and increased climate variability. While ecosystem development can take decades if not centuries, most restoration projects are minimally monitored, and a five-year window for assessment is often the best-case funding scenario. This means that detailed temporal studies of restoration projects are rare, which is particularly problematic in variable areas where climate cycles proceed at decadal scales. To address this gap, I worked with a vegetation field data set collected most years between 1990 and 2005 at an established restoration site initiated in 1975 (Muzzi Marsh) and a historical reference wetland (China Camp) in Marin County, CA. To determine the factors influencing reference and restoration trajectories, I examined changes in plant community identity in relation to annual salinity levels in the SF Bay, annual rainfall, and tidal channel structure. Over the entire study period, both sites experienced significant directional change away from the 1990 community. Community change was accelerated following low salinity conditions that resulted from strong El Niño events in 1994-1995 and 1997-1998. Overall rates of change were greater at the restoration site and driven by a combination of dominant and sub-dominant species, while change at the reference site was driven by sub-dominant species. Sub-dominant species first appeared at the restoration site in 1996 and incrementally increased during each subsequent year, whereas sub-dominant species cover at the reference site peaked in 1999 and subsequently declined. In addition to the later-stage restoration dynamics highlighted above, climate variability may also influence the early stages of restoration site development. At a developing restoration site in the SF Bay, I use object-based image analysis (OBIA) and change analysis of high-resolution IKONOS and WorldView-2 satellite imagery to explore whether mean annual rates of change from mudflat to vegetation are lower during drought years with higher salinity (2011-2015) compared to years with lower salinity (2009-2011). I found that vegetation increased at a mean rate of 1979 m2/year during California's historic drought, 10.4 times slower than the rate of 20580 m2/year between 2009 and 2011 when the state was not in drought. Vegetation was significantly concentrated in areas in closer to channel edges, where salinity stress is ameliorated, and the magnitude of the channel effect increased in the 2015 image. Seed dispersal is another critical but understudied mechanism driving restoration site development. Where and when seeds arrive at a restoration site can have major implications for how a restoration project proceeds. In my final chapter, I explore seed dispersal over a chronosequence of three restoration sites and two reference sites at Eden Landing Ecological Reserve (Hayward, CA), part of the South Bay Salt Pond Restoration Project. I find that seeds of wetland species in the restoration sites were significantly aggregated in areas with vegetation cover above 30%, and that many study plots were completely devoid of wetland seeds. Vegetation cover was significantly related to channel proximity and relative elevation at the sites. Reference sites contained significantly more seeds than restoration sites, but density was low overall at the reference sites. The oldest restoration site had statistically equivalent seed density compared to one of the reference sites. Across all sites, the pioneer dominant species Salicornia pacficia was the most common seed species, and sub-dominant species were only found in a single plot in the restoration sites and in overall low densities in the reference sites. These results highlight the fact that seeds or seedlings may need to be added to developing restoration sites, and that manipulating elevation and channel structure may be important for accelerating the rate of vegetation development.
Author: Arnas Palaima
Publisher: Univ of California Press
ISBN: 0520954017
Category : Nature
Languages : en
Pages : 289
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Book Description
The San Francisco Bay, the biggest estuary on the west coast of North America, was once surrounded by an almost unbroken chain of tidal wetlands, a fecund sieve of ecosystems connecting the land and the Bay. Today, most of these wetlands have disappeared under the demands of coastal development, and those that remain cling precariously to a drastically altered coastline. This volume is a collaborative effort of nearly 40 scholars in which the wealth of scientific knowledge available on tidal wetlands of the San Francisco Estuary is summarized and integrated. This book addresses issues of taxonomy, geomorphology, toxicology, the impact of climate change, ecosystem services, public policy, and conservation, and it is an essential resource for ecologists, environmental scientists, coastal policymakers, and researchers interested in estuaries and conserving and restoring coastal wetlands around the world.
Author: William S. Alevizon
Publisher: Bookbaby
ISBN: 9781543948349
Category : Science
Languages : en
Pages : 0
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Book Description
The original report From the Sierra to the Sea: Ecological History of the San Francisco Bay-Delta Watershed was a product of a three-year effort to develop a landscape level overview of the natural ecological structure, function and organization of the watershed, and the way it had changed over the course of the 19th and 20th centuries. Technical review and contributions from government and water agencies helped produce a collaborative document that provided information on the historical ecological baseline in order to assist in what was envisioned at the time as the most ambitious restoration effort ever undertaken in the United States. We are proud of the fact that the original document is still used as an objective reference, and has provided a foundation and inspiration for similar but more intensively researched localized efforts by others in the Bay-Delta watershed. This 20th anniversary edition contains a new Afterword describing changes to the estuary and its watershed since the report was originally published in 1998.
