Ecesis - River Partners

Ecesis
ecesis \I-’se-sus, i-’ke-sus\ noun [from Greek oikesis meaning inhabitation]: the establishment of an animal or plant in a new habitat.
The Quarterly Newsletter of the California Society for Ecological Restoration
Summer Solstice Volume 18, Issue 2
In this issue:
Considerations in
Riparian Restoration
1... Designing Riparian
Restoration for Wildlife in the
Central Valley
5... Life on the Floodplain
9... Ten Years at Beehive Bend
Plus…
2... SERCAL Contacts
10-11... Membership
This field was once planted as row crops. Agricultural techniques have been employed
on a large scale to restore it back to native riparian habitat. Here, native grasses are
being drill-seeded in to establish an herbaceous understory. With good site conditions
and proper maintenance, horticultural success can be achieved in a short period of time.
Ecesis is published quarterly by
the California Society for
Ecological Restoration, a
nonprofit corporation, as a
service to its members.
Newsletter contributions of all
types are welcome and may be
submitted to any of the
regional directors (see p. 2).
Articles should be sent as a
word processing document;
and accompanying images
sent as jpg or tif files.
Native riparian habitat
patches with a dense
understory like this will be
connected through habitat
restoration along the
Stanislaus River on the San
Joaquin NWR. (see page 5).
ABOVE
Considerations for Designing
Riparian Restoration for Wildlife
in California’s Central Valley
By Dan Efseaff, Stacy Small and Nick Pacini
I. Introduction
California riparian areas host some of the highest animal biodiversity in the state. While the number of
plant species that line lowland rivers may be relatively few, the vegetative patterns are complex. Trees,
shrubs, vines, and herbaceous plants combine to make a unique and extraordinary vegetative structure
found nowhere else. In addition, physical characteristics such as flood events, heterogeneous soils,
abundant water, multi-level terraces and other factors produce a complex mosaic across the landscape,
with dense forest abutting open grasslands. In short, many wildlife populations depend on healthy
riparian corridors.
By the 1980s, only a small percentage of historic riparian forests remained in the Central Valley.
Conversion of forest to agricultural lands, urban development, water diversions, dams, and other
human influences have all conspired to remove forests and degrade the remaining habitat (Katibah
1984). Not surprisingly, the loss of forest has precipitated the decline in a host of riparian-dependent
wildlife. A variety of creatures from Chinook salmon (Oncorhynchus tshawytscha) to Yellow-billed
Cuckoo (Coccyzus americanus occidentalis) to the valley elderberry longhorn beetle (Desmocerus
continued next page
SERCAL Board of Directors
Karen Verpeet H.T. Harvey & Associates
[email protected]
PRESIDENT
PRESIDENT-ELECT
Pending
Mark Tucker Tucker & Associates
[email protected]
PAST PRESIDENT
Paul Kielhold LSA Associates, Inc.-Riverside
[email protected]
SECRETARY
Bo Glover Environmental Nature Center
[email protected]
TREASURER
Directors
1 Mark Stemen California State University-Chico
[email protected] — NORTHERN INTERIOR (Lassen, Modoc,
REGION
Shasta, Siskiyou, Trinity)
2 Harry Oakes Jones & Stokes-Sacramento
[email protected] — SACRAMENTO VALLEY (Butte, Colusa,
Considerations for Designing Riparian Restoration
for Wildlife in California’s Central Valley continued
californicus dimorphus), depend on riparian zones for food, shelter, and cover in
sometimes complex ways that are still being investigated.
In response to these imperiled wildlife populations, agencies and organizations
initiated efforts to acquire and protect existing riparian habitat along the
Sacramento and San Joaquin Rivers. Yet looking across the fragmented slivers of
remaining habitat, conservationists recognized that stable wildlife populations
would require far more effort than the preservation of existing habitat. They
soon realized that recovery of wildlife populations needed to be considered as
success criteria for riparian restoration. In this article we will discuss our
experience in the Central Valley with riparian habitat restoration along the
Sacramento and San Joaquin Rivers
REGION
Glenn, Lake, Sacramento, Sutter, Tehama, Yolo, Yuba)
REGION
3 Regine Miller [email protected] —
BAY AREA (Alameda, Contra Costa, Marin, Napa, San Francisco,
San Mateo, Santa Clara, Solano, Sonoma)
4 Carl Jensen Wildlands, Inc. [email protected]
— SAN JOAQUIN VALLEY (Amador, Calaveras, Fresno, Kern, Kings,
REGION
Mariposa, Madera, Merced, San Joaquin, Stanislaus, Tulare,
Tuolumne)
5 Mark Tucker Tucker & Associates
[email protected] — SOUTH COAST (Los Angeles,
REGION
Orange, San Diego, Ventura)
6 Matt James Coastal Restoration Consultants
[email protected] —
REGION
CENTRAL COAST (Monterey, San Benito, San Luis Obispo,
Santa Barbara, Santa Cruz)
REGION 7 Nick Pacini [email protected]
(Del Norte, Humboldt, Mendocino)
— NORTH COAST
8 Michael Hogan Integrated Environmental Restoration
Services, Inc. [email protected]
— SIERRA (Alpine, El Dorado, Inyo, Mono, Nevada, Placer, Plumas,
REGION
Sierra)
9 Paul Kielhold LSA Associates, Inc.-Riverside
[email protected] — SOUTHERN INTERIOR
REGION
(Imperial, Riverside, San Bernardino)
Guild Chairs
Vince Cicero California Department of Parks &
Recreation [email protected]
COASTAL HABITAT
Karen Verpeet H.T. Harvey & Associates
[email protected]
EDUCATION
Margot Griswold EARTHWORKS Restoration, Inc.
[email protected]
UPLAND HABITAT
& RIPARIAN Max Busnardo H.T. Harvey & Associates
[email protected]
WETLAND
____________________
Susan Clark [email protected]
2701 20th St., Bakersfield 93301
tel. 661.634.9228 fax 661.634.9540
NEWSLETTER EDITOR Julie St. John [email protected]
WEBMASTER Steve Newton-Reed [email protected]
ADMINISTRATIVE DIRECTOR
2
Why do we need to actively restore these areas?
On the Sacramento River, after the completion of Shasta Dam, the threat of
damaging floods initially appeared to be greatly diminished, and floodplains
were cleared for agriculture. Soils along the Sacramento River and other major
rivers of California are some of the richest in the state. Abundant soil moisture,
good drainage, and favorable weather make them extremely attractive to
farmers, and while these areas may be productive, they are always at risk of
flooding. Flood events may have been somewhat tamed but many areas close to
the river still flood, with serious consequences for agriculture. Floods bring in
sand, sediment, and pathogens, and drown out crops. With changes in the farm
economy and crop patterns, farming on these flood-prone parcels became
extremely costly and were often abandoned.
Initial efforts to protect riparian habitat focused on preserving the largest blocks
of existing habitat available from willing sellers. Many of these sites included
former agricultural fields, no longer economical to farm due to flooding. The
flooding and proximity to existing riparian habitat encouraged many resource
managers to initially believe that riparian plants would reclaim these fallow
fields. In low-lying areas that experience frequent flooding this can be the case,
but our experience with areas cleared for agriculture is that they are good
candidate sites for active restoration. Areas that are close to the river and exposed
fully to river processes may be synchronized with riparian plant life cycles and
need little intervention (except for occasional weed control). These former ag
fields are still exposed to the impressive forces of the river that shape plant
communities, but a little distance or relative elevation is enough to mute these
forces. Furthermore, dams and diversions have altered river hydrographs,
diminishing the ability of some native riparian plants to become established.
Weed competition often precludes widespread native plant recruitment.
Therefore, these fallow fields can remain without significant native riparian
plants for decades.
Dams and floodplain barriers have altered the patterns of flood timing,
frequency, duration, and magnitude that native plant species have evolved with,
preventing succession on these fallow fields. For example, flood-dependent
plants such as Fremont cottonwood require bare soil (typically either scoured or
deposited from a flood event), minimal competition, and slowly receding
floodwaters so thirsty cottonwood roots can tap into deeper soil moisture before
the onslaught of another hot, dry Central Valley summer arrives.
Because river hydrographs are now so altered from historic patterns to which
plant populations have adapted, native plant recruitment on fallow ag fields can
Ecesis Summer 2008 Volume 18, Issue 2
be minimal, despite seemingly ideal
conditions like the cessation of
agricultural practices, frequent flood
events, and availability of nearby seed
sources. As adverse hydrologic conditions
persist, non-native plants (such as black
mustard, Johnson grass, perennial
pepperweed, and yellow star-thistle) are
likely to colonize and dominate for
decades. Over time, native plants (mainly
coyote brush, elderberry, and occasionally
native grasses) may recruit on site, but
their recruitment rate is likely to remain
slow. Perhaps worse, invasive woody
species such as tamarisk, arundo, and tree
of heaven may also colonize the site. At
high numbers, these species provide
extremely poor wildlife habitat and
diminish floodwater conveyance.
On the US Army Corps of Engineers’ McHenry Recreation Area, along the Stanislaus River,
Over the years, as resource managers
River Partners designed and implemented a restoration project that formed a complex
struggled with efforts to reduce the
habitat structure after only three growing seasons. This site was a fallow field of weeds
burden of maintenance on these fallow
four years ago; it now hosts dense native vegetation used by breeding and wintering
field properties and provide high quality
songbirds including Song Sparrows, Common Yellowthroats, and Black-headed Grosbeaks.
habitat, a new paradigm arose — the use
of agricultural techniques to plant and establish native plants and
Clearly the first priority is to develop planting designs that match
set in motion a new successional trajectory that favored native
site-specific conditions (soils, hydrology, existing vegetation, etc.),
riparian plants and provided wildlife habitat within a short period
and reference sites are certainly useful in this process. However,
of time.
an equally important concern is that restoration projects benefit
wildlife. Therefore, restoration designs must consider historic
How do we restore riparian habitats?
natural communities, but also take a pragmatic approach to
Large scale (over 50 acres) riparian restoration was pioneered on
consider current conditions and habitat requirements of wildlife
the Sacramento River in the early 1990s. This approach blends
species the projects are intended to benefit.
local agricultural practices with ecological theory in a costeffective manner. Since then this model has also been applied to
Wildlife habitat restoration requires a deep understanding of
the San Joaquin and other rivers.
wildlife species’ life histories. Identifying appropriate wildlife
“target” species and restoration sites requires an understanding of
With just a fraction of the original riparian forest left, large-scale
the species’ range (current and historic), annual cycle, habitat
restoration has become a very attractive option to fill in the gaps
requirements (sometimes at multiple spatial scales), competitors
between fragmented forests, increase the connectivity of wildlife
and predators. Working with wildlife ecologists and consulting
habitat corridors, provide breeding and foraging sites, and
published natural history accounts, species recovery plans, and
essentially provide a life support system for riparian wildlife
peer-reviewed scientific literature is all part of the process of
populations until more sufficient areas are protected and river
developing an effective habitat restoration plan.
management is more in sync with riparian life cycles. In light of
human population encroachment, the areas set aside for habitat
In order to represent a wide cross-section of habitat needs, River
will become increasingly important, and it is critical that the
Partners selects a suite of focal species (or “target” species) that
restoration on a site maximizes the investment.
the restoration project is intended to benefit over time. Although
other species are likely to benefit as well, this approach allows us
The initial projects implemented with this approach served as
to design projects with specific habitat features in mind. For
demonstration projects to test the feasibility of utilizing
example, Least Bell’s Vireo (Vireo bellii pusillus) nests in shrubby
agricultural practices to establish native riparian plants. As these
early successional riparian habitat, often near water. The riparian
techniques have become increasingly sophisticated, the scale has
brush rabbit inhabits dense thickets of riparian shrubs on
increased to projects that exceed 800 acres at a time, and the
floodplains. Juvenile Chinook salmon benefit from woody debris
approach now includes more refined objectives for wildlife and
and shaded habitat provided by trees and shrubs growing over the
other societal benefits, such as flood management and recreation.
water. Habitat requirements for multiple species can often be
continued next page
Volume 18, Issue 2 Summer 2008 Ecesis
3
Considerations for Designing
Riparian Restoration for
Wildlife in California’s
Central Valley continued
accommodated in an ecological
restoration plan that considers habitat
structure in addition to plant survival. As
new research and monitoring information
accumulates, we strive to perfect these
designs and incorporate new features that
lend themselves to becoming testable
hypotheses. Our success criteria have
shifted from a primary emphasis on plant
survival to include wildlife use. For
example, a nesting pair of Least Bell’s
Vireos successfully fledged young using
one of our restoration projects at the San
Joaquin National Wildlife Refuge. This
The true measure of success of wildlife-targeted restoration is not only plant survival, but
event signified the return of this oncewildlife use as well. These Least Bell’s Vireo chicks hatched on a restoration site on the San
common species to the Central Valley,
Joaquin River National Wildlife Refuge. This species had been absent for sixty years from
after a long 60 years’ absence. Although
the Central Valley prior to this nesting event.
they certainly may be related, the
detection of this species nesting on a restoration site may be a
adaptive feedback from land managers and wildlife specialists has
better indicator of success than high overall plant survivorship.
led to restoration designs that focus less on tall trees alone and
Our designs typically contain far more plant species diversity than
the surrounding agricultural landscape, and we spend
considerable effort to determine the structural components of the
planting. For example, to benefit Least Bell’s Vireo that nest in low
growing shrub cover, we may group roses and blackberries
together in an area planted with mugwort. To benefit Yellow-billed
Cuckoos, we may create a large stand of cottonwoods with light
gaps and a heavy shrub component.
River Partners often uses a “two forest” design. That is we plan for
multiple successional trajectories to create quality habitat over
long periods of time. Fast growing, early successional species such
as cottonwood and willows are planted to provide rapid vegetative
structure and habitat (5-20 years). Included in the design are
slower growing species such as valley oak. Over the long term, the
slower growing oaks will grow through the canopy and become
the dominant species (>25 years). In the meantime, multiple
generations of birds can benefit from this structural development
(please see the article on Beehive Bend, page 9). With this
approach, a transient successional series may dominate until
another plant community matures.
In other cases, we may create designs in which a riparian shrub
community dominates a site over time for the benefit of shrubdependent species, such as the riparian brush rabbit (see “Life on
the Floodplain” article, next page). Wildlife monitoring and
4
Ecesis Summer 2008 Volume 18, Issue 2
more on under- and mid-story species. Native grasses and forbs
add to the food base and cover and effectively out-compete
weeds. For example, dense cover of mugwort can make a site
more resistant to weed invasions and provide important habitat
for birds, such as the Song Sparrow (Melospiza melodia),
Common Yellowthroat (Geothlypis trichas) or Lazuli Bunting
(Passerina amoena).
Conclusions
Since its genesis over 15 years ago, the goals of riparian
restoration in California’s Central Valley have shifted from simple
horticultural success and plant survival to include wildlife
benefits, as well. Although this pragmatic approach of
maximizing habitat features for a suite of targeted wildlife species
may not exactly replicate the original habitat found on a
particular site, success is measured by whether wildlife
populations thrive on the restoration site and whether the
restoration efforts will have a lasting legacy to preserve imperiled
wildlife.
Katibah, E. F. 1984. A brief history of riparian forests in the central valley
of California. Pages 23-36 in R. E. Warner and K. M. Hendrix, editors.
California Riparian Systems. University of California Press, Berkeley.
A radio-collared riparian brush rabbit is ready to be released into the wild on the San
Joaquin River National Wildlife Refuge by the Endangered Species Recovery Program.
Life on the Floodplain:
Habitat Restoration for the riparian brush rabbit and other
riparian-associated wildlife in the northern San Joaquin Valley
Stacy L. Small, River Partners
The world of the riparian brush rabbit (Sylvilagus bachmani
riparius) is a tangled mess, depending on whose eyes you see it
through. This species inhabits thickets of California rose (Rosa
californica), California blackberry (Rubinus ursinus), and sandbar
willow (Salix exigua) that are typical of historic streamside
vegetation of the Central Valley but are now so rare throughout
this species’ historic range. Like other brush rabbit sub-species
distributed throughout shrubby plant communities of California,
such as chaparral and coastal scrub, the riparian brush rabbit
prefers low, woody shrub cover and creates a maze of tunnels for
travel through river bottom vegetation. It lives out its entire life
cycle without venturing far out into the open, and its compact
body is adapted to maneuver with great agility through dense
riparian thickets and, in this way, dodge coming prey.
However, the dense riparian cover favored by riparian brush
rabbits was just the “brush” least favored by landowners and levee
managers over the past century and was therefore targeted for
clearing throughout the San Joaquin Valley. Now one of the most
endangered mammals in California, this creature is hardly ever
seen in the wild, both because of its shy, skittish nature and its
rarity.
Life on the floodplain has another set of hazards for a shrubdwelling rabbit with limited swimming abilities. Frequent
flooding requires the riparian brush rabbit to seek high ground,
preferably a place with vegetative cover where it can wait out a
flood event without starving or being preyed upon by hawks
circling above. Such vegetated high ground is in short supply in
this rabbit’s historic San Joaquin Valley range. The natural
topography of riparian floodplains has been subject to leveling in
the process of agricultural conversion, which compounds the
effects of land clearing for this species.
To counteract historic land use impacts on this and other
riparian-associated species, River Partners has been collaborating
with the U.S. Fish & Wildlife Service (USFWS) and the
Endangered Species Recovery Program (ESRP) at CSU Stanislaus
to design and implement habitat restoration projects for the
benefit of reintroduced riparian brush rabbit populations on the
San Joaquin River National Wildlife Refuge. The primary
recovery goal for the riparian brush rabbit is to establish three
new self-sustaining sub-populations that can survival stochastic
events. To attain this goal, extensive habitat restoration, in
conjunction with ESRP’s captive breeding and reintroduction
program, is required.
Following recommendations from ESRP and USFWS, we have
taken a three-part approach to this restoration: 1) planting
continued next page
Volume 18, Issue 2 Summer 2008 Ecesis
5
Life on the Floodplain
continued
shrubby riparian habitat near rabbit
reintroduction areas; 2) re-vegetating
natural high ground and Refuge levees
as flood escape corridors; and 3)
constructing new high-ground flood
refugia on Refuge floodplains to restore
topography to formerly leveled fields. In
the process, we seek to provide multispecies benefits through our planting
and flood refugia designs.
To date, we have planted over 1,000
acres of riparian habitat on the San
Joaquin River National Wildlife Refuge
(10 miles west of Modesto) and
vegetated 20,000 linear feet of levees
with native shrubs, with financial
support from USFWS, California
Department of Water Resources,
CalFed, Bureau of Reclamation, Wildlife
Conservation Board, and the Resources A “rabbit’s-eye” view of riparian shrub habitat. Recent restoration designs have been based
Agency. Lately, we have focused on
on reference habitat like this on the San Joaquin River NWR.
restoring natural high ground and
constructing earthen mounds and berms that are planted with
(Melospiza melodia) and several species of wintering sparrows,
native shrub cover for flood refugia sites. Our planting
Wrentit (Chamaea fasciata), California Quail (Callipepla
composition for the brush rabbit is high in shrub species,
californica), and the endangered San Joaquin “riparian” woodrat
including California rose, California blackberry, coyote brush
(Neotoma fuscipes riparia). Wrentits, Spotted Towhees and Song
(Baccharis pilularis) and sandbar willow, with some blue
Sparrows nest in dense shrub cover. Riparian woodrats inhabit
elderberry (Sambucus mexicana) and valley oaks (Quercus lobata)
areas with willows beneath valley oaks. We also expect
included.
Neotropical migrant songbirds, such as Yellow Warblers
Wildlife species that typically co-occur in riparian brush rabbit
(Dendroica petechia) and Black-headed Grosbeaks (Pheucticus
habitat include Spotted Towhee (Pipilo maculatus), Song Sparrow
melanocephalus), to nest and forage in the willow patches
incorporated into our most recent designs. Mexican elderberry
provides an important food source for foraging birds and is
the host plant for the endangered valley elderberry
Many thanks to our 2007 Conference Sponsors…
longhorn beetle (Desmocerus californicus dimorphus).
We anticipate benefits for salmonid populations, as well.
Creating high-ground flood refugia for terrestrial wildlife
will enable the Refuge to eventually be restored to
functional floodplain habitat for juvenile salmonid rearing.
Also, by planting riparian vegetation near eroding river
banks, we will slow erosion, strengthen river banks, and
provide shade, shelter, and a food supply for aquatic
organisms.
The riparian brush rabbit’s life history is intricately linked
to floodplains, riparian habitat, and river processes, and its
recovery will depend upon the restoration of vigorous,
native riparian corridors. Effective restoration for this
species is likely to result in a thriving, diverse riparian
wildlife community for the northern San Joaquin Valley.
6
Ecesis Summer 2008 Volume 18, Issue 2
Many thanks to our 2007 Conference Sponsors…
Volume 18, Issue 2 Summer 2008 Ecesis
7
Many thanks to our 2007 Conference Premier Sponsor…
Many thanks to our 2007 Conference Sponsors…
8
Ecesis Summer 2008 Volume 18, Issue 2
Ten Years at Beehive Bend
Michael Rogner and Dan Efseaff, River Partners
In 1991, the California Department of Fish & Game (DFG)
acquired a 269-acre parcel in rural Glenn County. The site was
named the Beehive Bend Unit after the name of a sweeping curve
along the Sacramento River. A new channel was blasted in the
early 1900s to shorten the distance river boats needed to take,
leaving the remnant channel as an oxbow lake. Lining the old
channel was classic Sacramento River riparian forest — a
towering canopy of valley oak, Fremont cottonwood, Gooding’s
willow and western sycamore, all draped in a veil of wild grape.
Oregon ash and box elder, festooned with Dutchman’s pipevine
and poison oak, dominated the mid-story. The understory, like
most places on the river, was a mix of native and non-native
species.
However, in the midst of this lush habitat was approximately 60
acres that had been farmed for at least 40 years. When farming
ceased, this area lay fallow for a decade and vegetation quickly
colonized the rich soils, though few of the plants were native.
Instead, a tangle of yellow star thistle, Johnson grass, and black
mustard dominated the site, providing poor habitat and little
opportunity for forest regeneration.
In 1999, DFG contracted with River Partners to restore the
Beehive Bend Unit. This project came during a critical period in
the evolution of restoration design, and was one of the first to
incorporate a sophisticated plant design based on a mosaic of
vegetative structure designed specifically to maximize the niches
exploitable by native birds. To help evaluate the restoration, River
Partners worked with PRBO Conservation Science to monitor
breeding songbirds in both the remnant riparian and restoration
area, and the project design was developed in part with PRBO
recommendations. What began as a three-year study has now
extended into ten years of monitoring through subsequent
funding efforts. Longer term views are critical to understanding
the efficacy of restoration, as Dr. Nat Seavy of PRBO points out,
because “some species do not use restored sites until about 10
years after restoration. Monitoring beyond the typical three-year
period is critical for understanding whether or not restoration has
been successful in creating bird habitat.”
Riparian habitats are dynamic, yet predictable patterns occur and
wildlife responds accordingly. Early-successional habitat includes
such pioneering plant species as willows and blackberry that
colonize new sandbars after flood events, and this vegetative
structure is mimicked by young restoration. Some of the first
avian species to respond to this habitat include Black-headed
Grosbeak, Lesser Goldfinch and Spotted Sandpiper. Because
early-successional habitat is in short supply, these birds flock to
restoration sites, and have been documented abandoning long
held territories in old riparian in favor of restorations as young as
two years old.
Dams, diversions, and levees have greatly altered floods and
seasonal flows, and as a result, early-successional habitat is now
rarely created by the Sacramento River. Most of the remnant
habitat along the river is comparable to the existing riparian at
Beehive Bend, or is in agricultural production. While this can
provide important habitat for some birds, many sensitive bird
species need a different type of forest, the lush quick growth of
shrubby willows, California blackberry and other rapidly growing
native plants. In the absence of more dynamic rivers, restoration
plantings provide important habitat. The trick is how to best
manage these areas for them long term, and this question can
only be answered with long-term monitoring on existing projects
so that we can accurately evaluate their impacts.
So how has Beehive Bend performed over its first decade? Trends
from the 1999-2007 point-count data suggest some interesting
results. In the existing riparian forest, avian species richness has
averaged 9.8 (species per point, over two visits per breeding
season) for the duration of the study, while richness within the
restoration hovered around 3.5 over the first four years, and then
jumped to 7.5 in year five and 8.3 in year six. After a one-year
break due to lack of funding, the study resumed in 2006 (current
funding will take us through the 2008 field season) and PRBO
found that the restored forest now harbored a bird community
that was nearly as species rich as the existing riparian (richness =
9.0 in the restoration, 9.22 in the existing riparian over the next
two years).
Looking at Beehive in the context of a larger study, twenty bird
species were examined over a similar time period across a
hundred-mile segment of the lower Sacramento River and twelve
were found to be increasing, while only one was decreasing. While
this is great news in an era when so many studies are
documenting negative trends, we must continue to work closely
with our partners to further refine and improve our restoration
designs, working toward a common goal of ensuring the long
term vitality of California’s wildlife.
Volume 18, Issue 2 Summer 2008 Ecesis
9
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Ecesis Summer 2008 Volume 18, Issue 2
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Welcome New Members! through 1 June 2008
Sarah Hoskinson UC Davis
Don Rocha Santa Clara County Parks Los Gatos
Susan Erwin Weaverville
Stan Kaufman San Francisco
Michael Murphy Garden Valley
John Williams American Civil Constructors
Martinez
Michael Read Burlingame
Robert D. Sanders Chico
Allegra Bukojemsky BioHabitats, Inc. San
Francisco
Rose Roberts Farm Stewards Healdsburg
Andrew Werner Santa Cruz
Nancy Lesa Circuit Rider Productions Windsor
Arnold Thompson San Francisco
Madelyn Comer Nichols Consulting Engineers
Reno
Austin Parnow Healdsburg
Dorothy Abeyta City of San Jose
Julian Meisler Laguna de Santa Rosa Foundation
Santa Rosa
Ann Baker RRM Design Group Sausalito
Bree Candiloro Oakland
Gavin Archbald Romberg Tiburon Center for
Environmental Studies, SFSU
Carol Beahan Wildscape Engineering Services Corte
Madera
Volume 18, Issue 2 Summer 2008 Ecesis
11
Many thanks to our 2007 Conference Sponsors…
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