50 resultados para land-change science


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Describes the PICES-GLOBEC International Program on Climate Change and Carrying Capacity (PDF contains 60 pages)

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Coastal and marine ecosystems support diverse and important fisheries throughout the nation’s waters, hold vast storehouses of biological diversity, and provide unparalleled recreational opportunities. Some 53% of the total U.S. population live on the 17% of land in the coastal zone, and these areas become more crowded every year. Demands on coastal and marine resources are rapidly increasing, and as coastal areas become more developed, the vulnerability of human settlements to hurricanes, storm surges, and flooding events also increases. Coastal and marine environments are intrinsically linked to climate in many ways. The ocean is an important distributor of the planet’s heat, and this distribution could be strongly influenced by changes in global climate over the 21st century. Sea-level rise is projected to accelerate during the 21st century, with dramatic impacts in low-lying regions where subsidence and erosion problems already exist. Many other impacts of climate change on the oceans are difficult to project, such as the effects on ocean temperatures and precipitation patterns, although the potential consequences of various changes can be assessed to a degree. In other instances, research is demonstrating that global changes may already be significantly impacting marine ecosystems, such as the impact of increasing nitrogen on coastal waters and the direct effect of increasing carbon dioxide on coral reefs. Coastal erosion is already a widespread problem in much of the country and has significant impacts on undeveloped shorelines as well as on coastal development and infrastructure. Along the Pacific Coast, cycles of beach and cliff erosion have been linked to El Niño events that elevate average sea levels over the short term and alter storm tracks that affect erosion and wave damage along the coastline. These impacts will be exacerbated by long-term sea-level rise. Atlantic and Gulf coastlines are especially vulnerable to long-term sea-level rise as well as any increase in the frequency of storm surges or hurricanes. Most erosion events here are the result of storms and extreme events, and the slope of these areas is so gentle that a small rise in sea level produces a large inland shift of the shoreline. When buildings, roads and seawalls block this natural migration, the beaches and shorelines erode, threatening property and infrastructure as well as coastal ecosystems.

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Over the past one hundred and fifty years, the landscape and ecosystems of the Pacific Northwest coastal region, already subject to many variable natural forces, have been profoundly affected by human activities. In virtually every coastal watershed from the Strait of Juan de Fuca to Cape Mendocino, settlement, exploitation and development of resou?-ces have altered natural ecosystems. Vast, complex forests that once covered the region have been largely replaced by tree plantations or converted to non-forest conditions. Narrow coastal valleys, once filled with wetlands and braided streams that tempered storm runoff and provided salmon habitat, were drained, filled, or have otherwise been altered to create land for agriculture and other uses. Tideflats and saltmarshes in both large and small estuaries were filled for industrial, commercial, and other urban uses. Many estuaries, including that of the Columbia River, have been channeled, deepened, and jettied to provide for safe, reliable navigation. The prodigious rainfall in the region, once buffered by dense vegetation and complex river and stream habitat, now surges down sirfiplified stream channels laden with increased burdens of sediment and debris. Although these and many other changes have occurred incrementally over time and in widely separated areas, their sum can now be seen to have significantly affected the natural productivity of the region and, as a consequence, changed the economic structure of its human communities. This activity has taken place in a region already shaped by many interacting and dynamic natural forces. Large-scale ocean circulation patterns, which vary over long time periods, determine the strength and location of currents along the coast, and thus affect conditions in the nearshore ocean and estuaries throughout the region. Periodic seasonal differences in the weather and ocean act on shorter time scales; winters are typically wet with storms from the southwest while summers tend to be dry with winds from the northwest. Some phenomena are episodic, such as El Nifio events, which alter weather, marine habitats, and the distribution and survival of marine organisms. Other oceanic and atmospheric changes operate more slowly; over time scales of decades, centuries, and longer. Episodic geologic events also punctuate the region, such as volcanic eruptions that discharge widespread blankets of ash, frequent minor earthquakes, and major subduction zone earthquakes each 300 to 500 years that release accumulated tectonic strain, dropping stretches of ocean shoreline, inundating estuaries and coastal valleys, and triggering landslides that reshape stream profiles. While these many natural processes have altered, sometimes dramatically, the Pacific Northwest coastal region, these same processes have formed productive marine and coastal ecosystems, and many of the species in these systems have adapted to the variable environmental conditions of the region to ensure their long-term survival.

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Environmental managers strive to preserve natural resources for future generations but have limited decision-making tools to define ecosystem health. Many programs offer relevant broad-scale, environmental policy information on regional ecosystem health. These programs provide evidence of environmental condition and change, but lack connections between local impacts and direct effects on living resources. To address this need, the National Oceanic and Atmospheric Administration/National Ocean Service (NOAA/NOS) Cooperative Oxford Laboratory (COL), in cooperation with federal, state, and academic partners, implemented an integrated biotic ecosystem assessment on a sub-watershed 14-digit Hydrologic Unit Code (HUD) scale in Chesapeake Bay. The goals of this effort were to 1) establish a suite of bioindicators that are sensitive to ecosystem change, 2) establish the effects of varying land-use patterns on water quality and the subsequent health of living resources, 3) communicate these findings to local decision-makers, and 4) evaluate the success of management decisions in these systems. To establish indicators, three sub-watersheds were chosen based on statistical analysis of land-use patterns to represent a gradient from developed to agricultural. The Magothy (developed), Corsica (agricultural), and Rhode (reference) Rivers were identified. A random stratified design was developed based on depth (2m contour) and river mile. Sampling approaches were coordinated within this structure to allow for robust system comparisons. The sampling approach was hierarchal, with metrics chosen to represent a range from community to cellular level responses across multiple organisms. This approach allowed for the identification of sub-lethal stressors, and assessment of their impact on the organism and subsequently the population. Fish, crabs, clams, oysters, benthic organisms, and bacteria were targeted, as each occupies a separate ecological niche and may respond dissimilarly to environmental stressors. Particular attention was focused on the use of pathobiology as a tool for assessing environmental condition. By integrating the biotic component with water quality, sediment indices, and land- use information, this holistic evaluation of ecosystem health will provide management entities with information needed to inform local decision-making processes and establish benchmarks for future restoration efforts.

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Grass shrimp, Palaemonetes pugio, are a common inhabitant of US East and Gulf coast salt marshes and are a food source for recreationally and economically important fish and crustacean species. Due to the relationship of grass shrimp with their ecosystem, any significant changes in grass shrimp population may have the potential to affect the estuarine system. Land use is a crucial concern in coastal areas where increasing development impacts the surrounding estuaries and salt marshes and has made grass shrimp population studies a logical choice to investigate urbanization effects. Any impact on tidal creeks will be an impact on grass shrimp populations and their associated micro-environment whether predator, prey or parasitic symbiont. Anthropogenic stressors introduced into the grass shrimp ecosystem may even change the intensity of infections from parasitic symbionts. An ectoparasite found on P. pugio is the bopyrid isopod Probopyrus pandalicola. Little is known about factors that may affect the occurrence of this isopod in grass shrimp populations. The goal was to analyze the prevalence of P. pandalicola in grass shrimp in relation to land use classifications, water quality parameters, and grass shrimp population metrics. Eight tidal creeks in coastal South Carolina were sampled monthly over a three year period. The occurrence of P. pandalicola ranged from 1.2% to 5.7%. Analysis indicated that greater percent water and marsh coverage resulted in a higher incidence of bopyrid occurrence. Analysis also indicated that higher bopyrid incidence occurred in creeks with higher salinity, temperature, and pH but lower dissolved oxygen. The land use characteristics found to limit bopyrid incidence were limiting to grass shrimp (definitive host) populations and probably copepod (intermediate host) populations as well.

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Report of Opening Session (pdf 0.07 Mb) Report of Governing Council (pdf 0.2 Mb) Report of the Finance and Administration Committee (pdf 0.07 Mb) Reports of Science Board and Committees Science Board inter-sessional meeting (pdf 0.07 Mb) Science Board (pdf 0.1 Mb) Biological Oceanography Committee (pdf 0.2 Mb) Fishery Science Committee (pdf 0.04 Mb) Marine Environmental Quality Committee (pdf 0.06 Mb) MONITOR Technical Committee (pdf 0.05 Mb) Physical Oceanography and Climate Committee (pdf 0.06 Mb) Technical Committee on Data Exchange (pdf 0.04 Mb) Reports of Sections, Working and Study Groups Section on Ecology of harmful algal blooms in the North Pacific (pdf 0.03 Mb) Section on Carbon and Climate Working Group 18 on Mariculture in the 21st century - The intersection between ecology, socio-economics and production (pdf 0.06 Mb) Working Group 19 on Ecosystem-based management science and its application to the North Pacific (pdf 0.03 Mb) Reports of the Climate Change and Carrying Capacity Program Implementation Panel on the CCCC Program (pdf 0.04 Mb) CFAME Task Team (pdf 0.04 Mb) MODEL Task Team (pdf 0.04 Mb) Reports of Advisory Panels Advisory Panel on Iron Fertilization Experiment in the Subarctic Pacific Ocean (pdf 0.04 Mb) Advisory Panel on Marine Birds and Mammals (pdf 0.03 Mb) Advisory Panel on Micronekton Sampling Inter-Calibration experiment (pdf 0.05 Mb) Summary of Scientific Sessions and Workshops (pdf 0.2 Mb) Membership List (pdf 0.07 Mb) List of Participants (pdf 0.07 Mb) List of Acronyms (pdf 0.03 Mb)

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Report of Opening Session (pdf 0.07 Mb) Report of Governing Council (pdf 0.2 Mb) Report of the Finance and Administration Committee (pdf 0.08 Mb) Reports of Science Board and Committees Science Board inter-sessional meeting (pdf 0.05 Mb) Science Board (pdf 0.1 Mb) Biological Oceanography Committee (pdf 0.1 Mb) Fishery Science Committee (pdf 0.04 Mb) Marine Environmental Quality Committee (pdf 0.04 Mb) Physical Oceanography and Climate Committee (pdf 0.04 Mb) Technical Committee on Data Exchange (pdf 0.04 Mb) Reports of Sections, Working and Study Groups Harmful Algal Blooms Section (pdf 0.03 Mb) Working Group 17 on Biogeochemical data integration and synthesis (pdf 0.03 Mb) Working Group 18 on Mariculture in the 21st century - The intersection between ecology, socio-economics and production (pdf 0.06 Mb) Study Group on Ecosystem-based management science and its application to the North Pacific (pdf 0.04 Mb) Reports of the Climate Change and Carrying Capacity Program Implementation Panel on the CCCC Program (pdf 0.04 Mb) BASS Task Team (pdf 0.04 Mb) CFAME Task Team (pdf 0.04 Mb) MODEL Task Team (pdf 0.04 Mb) MONITOR Task Team (pdf 0.03 Mb) REX Task Team (pdf 0.04 Mb) Reports of Advisory Panels Advisory Panel on Continuous Plankton Recorder Survey in the North Pacific (pdf 0.4 Mb) Advisory Panel on Iron Fertilization Experiment in the Subarctic Pacific Ocean (pdf 0.03 Mb) Advisory Panel on Marine Birds and Mammals (pdf 0.04 Mb) Advisory Panel on Micronekton Sampling Inter-Calibration experiment (pdf 0.04 Mb) Summary of Scientific Sessions and Workshops (pdf 0.2 Mb) Membership List (pdf 0.07 Mb) List of Participants (pdf 0.09 Mb) List of Acronyms (pdf 0.03 Mb)

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Report of Opening Session (pdf 58 KB) Report of Governing Council Meeting (pdf 244 KB) Report of 2003 interim Governing Council meeting Tenth Anniversary PICES Organization Review Report of the Finance and Administration Committee (pdf 102 KB) 2002 Auditor's report to the Organization Review of PICES Publication Program Reports of Science Board and Committees: Science Board/Governing Council interim meeting (pdf 81 KB) Science Board (pdf 95 KB) Study Group on PICES Capacity Building Biological Oceanography Committee (pdf 65 KB) Advisory Panel on Micronekton sampling gear intercalibration experiment Advisory Panel on Marine birds and mammals Fishery Science Committee (pdf 41 KB) Working Group 16 on Climate change, shifts to fish production, and fisheries management Marine Environmental Quality Committee (pdf 76 KB) Working Group 15 on Ecology of Harmful Algal Blooms (HABs) in the North Pacific Physical Oceanography and Climate Committee (pdf 70 KB) Working Group 17 on Biogeochemical data integration and synthesis Advisory Panel on North Pacific Data Buoy Technical Committee on Data Exchange (pdf 32 KB) Implementation Panel on the CCCC Program (pdf 64 KB) Nemuro Experimental Planning Team (NEXT) BASS Task Team (pdf 35 KB) Advisory Panel on Iron Fertilization Experiment MODEL Task Team (pdf 29 KB) MONITOR Task Team (pdf 30KB) REX Task Team (pdf 25 KB) Documenting Scientific Sessions (pdf 164 KB) List of Participants (pdf 60 KB) List of Acronyms (pdf 21 KB)

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Report of Opening Session (pdf 51 KB) Report of Governing Council Meeting(pdf 136 KB) Report of the Finance and Administration Committee (pdf 48 KB) Reports of Science Board and Committees: Science Board (pdf 71 KB) Biological Oceanography Committee (pdf 66 KB) Working Group 14: Effective sampling of micronekton Marine Birds and Mammals Advisory Panel Fishery Science Committee (pdf 36 KB) Working Group 16: Climate change, shifts to fish production, and fisheries management Marine Environmental Quality Committee (pdf 39 KB) Working Group 15: Ecology of Harmful Algal Blooms (HABs) in the North Pacific Physical Oceanography and Climate Committee (pdf 49 KB) North Pacific Data Buoy Advisory Panel Working Group 17: Biogeochemical data integration and synthesis Technical Committee on Data Exchange (pdf 29 KB) Implementation Panel on the CCCC Program (pdf 43 KB) BASS Task Team (pdf 30 KB) Iron Fertilization Experiment Advisory Panel MODEL Task Team (pdf 28 KB) MONITOR Task Team (pdf 34 KB) Summary of Continuous Plankton Recorder activities in 2002 REX Task Team (pdf 21 KB) Documenting Scientific Sessions (pdf 140 KB) List of Participants (pdf 59 KB) List of Acronyms (pdf 21 KB)

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Report of Opening Session (pdf 42 KB) Report of Governing Council Meeting (pdf 89 KB) Reports of Science Board and Committees: Science Board (pdf 88 KB) Study Group on North Pacific Ecosystem Status Report and Regional Analysis Center Biological Oceanography Committee (pdf 57 KB) Working Group 14: Effective sampling of micronekton Advisory Panel on Marine Birds and Mammals Fishery Science Committee (pdf 37 KB) Working Group 16: Climate change, shifts to fish production, and fisheries management Marine Environmental Quality Committee (pdf 62 KB) Working Group 15: Ecology of Harmful Algal Blooms (HABs) in the North Pacific Physical Oceanography and Climate Committee (pdf 34 KB) Working Group 13: CO2 in the North Pacific Technical Committee on Data Exchange (pdf 24 KB) Implementation Panel on the CCCC Program (pdf 39 KB) BASS Task Team (pdf 32 KB) Advisory Panel on Iron Fertilization Experiment MODEL Task Team (pdf 22 KB) MONITOR Task Team (pdf 32 KB) Advisory Panel on Continuous Plankton Recorder Survey in the North Pacific REX Task Team (pdf 21 KB) Report of the Finance and Administration Committee (pdf 53 KB) List of Participants (pdf 67 KB) List of Acronyms (pdf 13 KB)

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Report of Opening Session (pdf 42 KB) Report of Governing Council Meetings (pdf 70 KB) Reports of Science Board and Committees: Science Board (pdf 57 KB) Biological Oceanography Committee (pdf 43 KB) Working Group 14: Effective Sampling of Micronekton Advisory Panel on Marine birds and mammals Fishery Science Committee (pdf 31 KB) Working Group 16 on Implications of Climate change to Fisheries Management Marine Environmental Quality Committee (pdf 47 KB) Working Group 8: Practical Assessment Methodology Working Group 15 on Ecology of Harmful Algal Blooms (HABs) in the North Pacific Physical Oceanography and Climate Committee (pdf 41 KB) Working Group 13: CO2 in the North Pacific Implementation Panel on the CCCC Program (pdf 120 KB) BASS Task Team Advisory Panel on Iron Fertilization Experiment MODEL Task Team MONITOR Task Team Advisory Panel on Continuous Plankton Recorder Survey in the North Pacific REX Task Team Technical Committee on Data Exchange (pdf 24 KB) Finance and Administration: Report of the Finance and Administration Committee (pdf 49 KB) Assets on 31st of December, 1999 Income and Expenditures for 1999 Budget for 2001 Report of the Fund-Raising Committee (pdf 20 KB) Composition of the Organization (pdf 27 KB) List of Participants (pdf 94 KB) List of Acronyms (pdf 13 KB)

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EXECUTIVE SUMMARY WORKSHOP OVERVIEW Introduction Goals and objectives of the workshop Organizing committee, participants, sponsors and venue Workshop activity NEMURO.FISH COUPLED WITH A POPULATION DYNAMICS MODEL (SAURY) Introduction One cohort case with no reproduction Two (overlapping) cohort scenario with no reproduction Two-cohort case with no reproduction and body size-dependent mortality Two-cohort case with reproduction and KL-dependent mortality Conclusions and future perspectives LAGRANGIAN MODEL OF NEMURO.FISH Tasks and members Description of model and preliminary results Future tasks COUPLING NEMURO TO HERRING BIOENERGETICS Overview Details of the NEMURO_Herring model Example simulation of NEMURO_Herring Future plans REFERENCES APPENDICES Workshop participants Workshop schedule Lagrangian model (FORTRAN program) (55 page document)

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Introduction [pdf, 0.27 MB] Methods [pdf, 0.15 MB] Results and discussion [pdf, 2.1 MB] Conclusions [pdf, 0.12 MB] Appendix A: Data gathering review, results and balancing [pdf, 0.3 MB] Appendix B: Data tables [pdf, 0.35 MB] Appendix C: BASS Workshop on the "Development of a conceptual model of the subarctic Pacific Basin ecosystems" [pdf, 0.16 MB] Appendix D: BASS/MODEL Workshop on "Higher trohic level modeling" [pdf, 0.24 MB] Appendix E: BASS/MODEL Workshop to review ecosystem models for the subarctic Pacific gyres [pdf, 4.39 MB] Appendix F: BASS/MODEL Workshop on "Perturbation analysis" on subarctic Pacific gyre ecosystem models using ECOPATH/ECOSIM" [pdf, 0.37 MB] Appendix G: Proposal for a BASS Workshop on "Linkages between open and coastal systems" [pdf, 0.15 MB] References [pdf, 0.14 MB] (97 page document)

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Introduction [pdf, 0.17 MB] Warren S. Wooster [pdf, 0.12 MB] PICES - the first decade, and beyond Paul H. LeBlond [pdf, 0.03 MB] The Physical Oceanography and Climate Committee: The first decade D.E. Harrison and Neville Smith [pdf, 0.04 MB] Ocean observing systems and prediction - the next ten years Tsutomu Ikeda and Patricia A. Wheeler [pdf, 0.85 MB] Ocean impacts from the bottom of the food web to the top: Biological Oceanography Committee (BIO) retrospective Timothy R. Parsons [pdf, 0.2 MB] Future needs for biological oceanographic studies in the Pacific Ocean Douglas E. Hay, Richard J. Beamish, George W. Boehlert, Vladimir I. Radchenko, Qi-Sheng Tang, Tokio Wada, Daniel W. Ware and Chang-Ik Zhang [pdf, 0.2 MB] Ten years FIS in PICES: An introspective, retrospective, critical and constructive review of fishery science in PICES Richard F. Addison, John E. Stein and Alexander V. Tkalin [pdf, 0.12 MB] Marine Environmental Committee in review Robie W. Macdonald, Brian Morton, Richard F. Addison and Sophia C. Johannessen [pdf, 1.89 MB] Marine environmental contaminant issues in the North Pacific: What are the dangers and how do we identify them? R. Ian Perry, Anne B. Hollowed and Takashige Sugimoto [pdf, 0.36 MB] The PICES Climate Change and Carrying Capacity Program: Why, how, and what next? List of acronyms [pdf, 0.07 MB] (Document contains 108 pages)

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On April 4-5, 2002, the PICES MONITOR Task Team, the PICES Continuous Plankton Recorder (CPR) Advisory Panel, and the Exxon Valdez Oil Spill Trustee Council’s Gulf Ecosystem Monitoring (GEM) program convened a workshop in Seattle, U.S.A., to consider enhanced instrumentation for volunteer observing ships (VOS), particularly instruments to complement CPR data. (PDF contains 44 pages)