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Books > Earth & environment > Geography > Physical geography > General
This document describes a protocol to monitor five terrestrial
plant communities in seven national parks within the Pacific Island
Network (PACN).
Clay Pond has a rich history that is shared by other residents of
the pond. Ask anyone there about the friendly turtle, and the other
wonderful friends, like Lacy the Dragonfly, who have made this
place a home over the past several years. Each creature has their
own unique tale to tell. Everyone in this place looks out for the
well being of all the others. If it were possible to claim each
other as family, they would do it in a heartbeat. It is, in a word,
a safe haven for anyone living in or around the pond. Many of my
stories in this whole collection are based on true incidents in my
writer life. As the reader, I hope you fall in love with this
nature world as I have drawn it. The purpose of compiling these
tales is to entertain, stir, or bring to remembrance some of the
readers' own experiences as they step out into their own nature
world around them.
The purpose of the National Park Service (NPS) Inventory &
Monitoring (I&M) Program is to develop and provide
scientifically credible information on the current status and
long-term trends of the composition, structure, and function of
park ecosystems, and to determine how well current management
practices are sustaining those ecosystems. As part of the NPS's
effort to improve park management through greater reliance on
scientific knowledge, a primary role of the I&M Program is to
collect, organize, and make available natural resource data and to
contribute to the NPS institutional knowledge by transforming data
into information through analysis, synthesis, and modeling of
specific key vital signs. The I&M Program defines vital signs
as a subset of physical, chemical, and biological elements and
processes of park ecosystems that is selected to represent the
overall health or condition of park resources, known or
hypothesized effects of stressors, or elements that have important
human values.
Since the late 1970s, the NPS Air Resources Division (ARD) has
managed a comprehensive air quality program, emphasizing the
collection of credible air quality information to support
scientifically sound resource management decisions in parks. In
general, air quality monitoring in parks, including monitoring of
atmospheric deposition, ozone, and visibility, is done in
conjunction with national networks. The authors describe the
atmospheric deposition monitoring protocol.
Vegetation classification and mapping was conducted at Weir Farm
National Historic Site during the fall of 2003 and the summers of
2004 and 2005, creating a current digital geospatial vegetation
database for the park. There are nine natural vegetation types that
occur in the park; four upland forest types, one upland
non-vascular type, two forested wetland types, and two wetland
shrub thicket types that reflected the soil moisture conditions of
the site. In addition, four anthropogenic vegetation types
occurred; one successional forest and three non-forested types (two
in mowed upland fields, and one herbaceous wetland seep). Each of
these is described in detail in this report.
This study measured wetland trends in the conterminous United
States between 1998 and 2004. The estimates of estuarine emergent
area were made prior to Hurricanes Katrina and Rita during the
summer of 2005. The Cowardin et al. (1979) wetland definition was
used to describe wetland types. By design, intertidal wetlands of
the Pacific coast, reefs and submerged aquatic vegetation were
excluded from this study.
This study was requested by the park in recognition of the need for
soils information to assist in understanding the forest ecosystem,
potential fire effects, management of trails and buildings, and for
interpreting the Monument's cultural landscape. Existing soils
information for Cook County provided only a very broad overview,
with little or no field investigation to verify soil types or
provide information at a level of detail pertinent to or useful for
park needs.
A review of NPS species, the national database registering plant
occurrence in parks, indicated that 465 plant species occurred in
Hopewell Culture National Historical Park. Of these, 148 (32%) are
non-native, meaning that these plants were recently introduced
through human agency. The authors detail the status of invasive
plants and the resource management issue(s) for the park.
Beaches serve as a natural barrier between the ocean and inland
communities, ecosystems, and natural resources. However, these
dynamic environments move and change in response to winds, waves,
and currents. During extreme storms, such as powerful hurricanes,
changes to beaches can be large, and the results are sometimes
catastrophic. Lives may be lost, communities destroyed, and
millions of dollars spent on rebuilding.
Market squid (Loligo opalescens) plays a vital role in the
California ecosystem and serves as a major link in the food chain
as both a predator and prey species.
This report to the Congress details the status and trends of our
Nation's wetlands. It covers the period from 1986 to 1997, and
provides the most recent and comprehensive estimates of the current
status of wetland area throughout the conterminous United States
and the losses or gains to various wetland types that have occurred
during this time.
The purpose of this publication is to report the findings of the
Service's wetlands inventory of Rhode Island.
The U.S. Geological Survey (USGS), a nonregulatory Federal science
agency with national scope and responsibilities, is uniquely
positioned to serve the Nation's needs in understanding and
responding to global change, which includes changes in climate; sea
level; land use and land cover; ecosystems; and the global water,
carbon, and nitrogen cycles. Global change is among the most
challenging and formidable issues confronting our Nation and
society. Scientists agree that global environmental changes during
this century will have far-reaching societal implications
Intergovernmental Panel on Climate Change (IPCC), 2007; USGCRP,
2009]. In the face of these complex challenges, the Nation can
benefit greatly by using natural science information in
decisionmaking.
As part of the U.S. Geological Survey Priority Ecosystems Science
initiative to provide the ecological science required during
Everglades restoration, we have integrated current regional
hydrologic models with American crocodile research and monitoring
data to create a model that assesses the potential impact of
Comprehensive Everglades Restoration Plan efforts on the American
crocodile.
Although parasites play important ecological roles through the
direct interactions they have with their hosts, historically that
fact has been underappreciated. Today, scientists have a growing
appreciation of the scope of such impacts. Parasites have been
reported to dominate food webs (Bakker and others, 1997; Lafferty
and others, 2006), alter predator-prey relationships (Lafferty and
Morris, 1996), act as ecosystem engineers (Thomas and others, 1998,
1999), and alter community structure (Poulin, 1999; Wood and
others, 2007). In spite of this growing awareness in the scientific
community, parasites are still often neglected in the consideration
of the management and conservation of resources and ecosystems
(Marcogliese, 2004). Given that at least half of the organisms on
earth are probably parasitic (Price, 1980; Windsor, 1998), it
should be evident that the ecological functions of parasites
warrant greater attention.
Increasingly, dry rangelands are being valued for multiple services
beyond their traditional value as a forage production system.
Additional ecosystem services include the potential to store carbon
in the soil and plant biomass. In addition, dust emissions from
rangelands might be considered an ecosystem detriment, the opposite
of an ecosystem service. Dust emitted may have far-reaching
impacts, for example, reduction of local air quality, as well as
altering regional water supplies through effects on snowpack. Using
an extensive rangeland monitoring dataset in the greater
Canyonlands region (Utah, USA), we developed a method to estimate
indices of the provisioning of three ecosystem services (forage
production, dust retention, C storage) and one ecosystem property
(nativeness), taking into account both ecosystem type and
alternative states within that ecosystem type. We also integrated
these four indices into a multifunctionality index. Comparing the
currently ungrazed Canyonlands National Park watersheds to the
adjacent Dugout Ranch pastures, we found clearly higher
multifunctionality was attained in the Park, and that this was
primarily driven by greater C-storage and better dust retention. It
is unlikely to maximize all benefits and minimize all detriments at
the same time. Some goods and services may have synergistic
interactions; for example, managing for carbon storage will
increase plant and biocrust cover likely lowering dust emission.
Likewise, some may have antagonistic interactions. For instance, if
carbon is consumed as biomass for livestock production, then carbon
storage may be reduced. Ultimately our goal should be to quantify
the monetary consequences of specific land use practices for
multiple ecosystem services and determine the best land use and
adaptive management practices for attaining multiple ecosystem
services, minimizing economic detriments, and maximizing economic
benefits from multi-commodity rangelands. Our technique is the
first step toward this goal, allowing the simultaneous
consideration of multiple targeted ecosystem services and
properties.
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