Author: Gulf Research Program
Publisher: National Academies Press
ISBN: 0309368553
Category : Social Science
Languages : en
Pages : 173
Book Description
There are many connections between human communities and their surrounding environments that influence community resilience and health in the Gulf of Mexico. The impacts of the Deepwater Horizon oil spill on Gulf communities and ecosystems - coupled with the region's preexisting health challenges and environmental stressors - illustrate the need to better understand these connections. In the future, natural and man-made disasters, climate change impacts, and other environmental stressors will present complex challenges to the physical, mental, and social well-being of communities in the Gulf. Understanding the interrelationships among health, ecological, and economic impacts of disasters and other environmental stressors will be crucial to addressing these challenges. Opportunities for the Gulf Research Program: Community Resilience and Health summarizes a Gulf Research Program workshop held on September 22-23, 2014, in New Orleans, Louisiana. The workshop examined opportunities to improve the health, well-being, and resilience of communities in the Gulf region through discussions with about 50 participants with diverse expertise and experience. These discussions identified perceived needs, challenges, and opportunities that align with the Gulf Research Program's mission and goals - particularly its goal to improve understanding of the connections between human health and the environment to support the development of health and resilient Gulf communities. This workshop is expected to lead to the development of additional Program activities and opportunities for the research community.
Understanding and Predicting the Gulf of Mexico Loop Current
Author: National Academies of Sciences, Engineering, and Medicine
Publisher: National Academies Press
ISBN: 0309462207
Category : Science
Languages : en
Pages : 117
Book Description
One of the most significant, energetic, yet not well understood, oceanographic features in the Americas is the Gulf of Mexico Loop Current System (LCS), consisting of the Loop Current (LC) and the Loop Current Eddies (LCEs) it sheds. Understanding the dynamics of the LCS is fundamental to understanding the Gulf of Mexico's full oceanographic system, and vice versa. Hurricane intensity, offshore safety, harmful algal blooms, oil spill response, the entire Gulf food chain, shallow water nutrient supply, the fishing industry, tourism, and the Gulf Coast economy are all affected by the position, strength, and structure of the LC and associated eddies. This report recommends a strategy for addressing the key gaps in general understanding of LCS processes, in order to instigate a significant improvement in predicting LC/LCE position, evolving structure, extent, and speed, which will increase overall understanding of Gulf of Mexico circulation and to promote safe oil and gas operations and disaster response in the Gulf of Mexico. This strategy includes advice on how to design a long-term observational campaign and complementary data assimilation and numerical modeling efforts.
Publisher: National Academies Press
ISBN: 0309462207
Category : Science
Languages : en
Pages : 117
Book Description
One of the most significant, energetic, yet not well understood, oceanographic features in the Americas is the Gulf of Mexico Loop Current System (LCS), consisting of the Loop Current (LC) and the Loop Current Eddies (LCEs) it sheds. Understanding the dynamics of the LCS is fundamental to understanding the Gulf of Mexico's full oceanographic system, and vice versa. Hurricane intensity, offshore safety, harmful algal blooms, oil spill response, the entire Gulf food chain, shallow water nutrient supply, the fishing industry, tourism, and the Gulf Coast economy are all affected by the position, strength, and structure of the LC and associated eddies. This report recommends a strategy for addressing the key gaps in general understanding of LCS processes, in order to instigate a significant improvement in predicting LC/LCE position, evolving structure, extent, and speed, which will increase overall understanding of Gulf of Mexico circulation and to promote safe oil and gas operations and disaster response in the Gulf of Mexico. This strategy includes advice on how to design a long-term observational campaign and complementary data assimilation and numerical modeling efforts.
Opportunities for the Gulf Research Program
Author: Gulf Research Program
Publisher: National Academies Press
ISBN: 0309368553
Category : Social Science
Languages : en
Pages : 173
Book Description
There are many connections between human communities and their surrounding environments that influence community resilience and health in the Gulf of Mexico. The impacts of the Deepwater Horizon oil spill on Gulf communities and ecosystems - coupled with the region's preexisting health challenges and environmental stressors - illustrate the need to better understand these connections. In the future, natural and man-made disasters, climate change impacts, and other environmental stressors will present complex challenges to the physical, mental, and social well-being of communities in the Gulf. Understanding the interrelationships among health, ecological, and economic impacts of disasters and other environmental stressors will be crucial to addressing these challenges. Opportunities for the Gulf Research Program: Community Resilience and Health summarizes a Gulf Research Program workshop held on September 22-23, 2014, in New Orleans, Louisiana. The workshop examined opportunities to improve the health, well-being, and resilience of communities in the Gulf region through discussions with about 50 participants with diverse expertise and experience. These discussions identified perceived needs, challenges, and opportunities that align with the Gulf Research Program's mission and goals - particularly its goal to improve understanding of the connections between human health and the environment to support the development of health and resilient Gulf communities. This workshop is expected to lead to the development of additional Program activities and opportunities for the research community.
Publisher: National Academies Press
ISBN: 0309368553
Category : Social Science
Languages : en
Pages : 173
Book Description
There are many connections between human communities and their surrounding environments that influence community resilience and health in the Gulf of Mexico. The impacts of the Deepwater Horizon oil spill on Gulf communities and ecosystems - coupled with the region's preexisting health challenges and environmental stressors - illustrate the need to better understand these connections. In the future, natural and man-made disasters, climate change impacts, and other environmental stressors will present complex challenges to the physical, mental, and social well-being of communities in the Gulf. Understanding the interrelationships among health, ecological, and economic impacts of disasters and other environmental stressors will be crucial to addressing these challenges. Opportunities for the Gulf Research Program: Community Resilience and Health summarizes a Gulf Research Program workshop held on September 22-23, 2014, in New Orleans, Louisiana. The workshop examined opportunities to improve the health, well-being, and resilience of communities in the Gulf region through discussions with about 50 participants with diverse expertise and experience. These discussions identified perceived needs, challenges, and opportunities that align with the Gulf Research Program's mission and goals - particularly its goal to improve understanding of the connections between human health and the environment to support the development of health and resilient Gulf communities. This workshop is expected to lead to the development of additional Program activities and opportunities for the research community.
Opportunities for the Gulf Research Program: Middle-Skilled Workforce Needs
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309314305
Category : Technology & Engineering
Languages : en
Pages : 112
Book Description
During the period 1990 to 2010, U.S. job growth occurred primarily in the high-skilled and low-skilled sectors. Yet, one-third of projected job growth for the period 2010-2020 will require middle-skilled workers-who will earn strong middle-class wages and salaries-important to both the production and consumption components of our economy. These jobs typically require significant training, often requiring more than a high school diploma but less than a baccalaureate degree. In the Gulf of Mexico, middle skilled workers play key roles in maintaining oil system safety, completing the numerous environmental restoration projects needed along the Gulf coast, and as workers in an integrated and resilient public health system. Educational pathways that lead to middle skilled jobs in these areas include: apprenticeship programs offered by schools, unions, and employers; high school career and technical education programs; community college courses, certificates, and associate degrees; and employer provided training. Opportunities for the Gulf Research Program: Middle-Skilled Workforce Needs is the summary of a workshop held on June 9-10, 2014 in Tampa, Florida. This workshop convened 40 thought leaders from the Gulf region's education, employer, and policymaking communities to facilitate a discussion of the current state of education and training pathways for preparing the region\'s middle-skilled workforce in both the short- and long-term and to identify perceived needs and potential opportunities that might be addressed by the GRP. Workshop participants discussed a variety of opportunities around building capacity in the region's middle-skilled workforce, including the need for competency-based education and training approaches and stronger partnerships among the region's employers and institutions of higher education.
Publisher: National Academies Press
ISBN: 0309314305
Category : Technology & Engineering
Languages : en
Pages : 112
Book Description
During the period 1990 to 2010, U.S. job growth occurred primarily in the high-skilled and low-skilled sectors. Yet, one-third of projected job growth for the period 2010-2020 will require middle-skilled workers-who will earn strong middle-class wages and salaries-important to both the production and consumption components of our economy. These jobs typically require significant training, often requiring more than a high school diploma but less than a baccalaureate degree. In the Gulf of Mexico, middle skilled workers play key roles in maintaining oil system safety, completing the numerous environmental restoration projects needed along the Gulf coast, and as workers in an integrated and resilient public health system. Educational pathways that lead to middle skilled jobs in these areas include: apprenticeship programs offered by schools, unions, and employers; high school career and technical education programs; community college courses, certificates, and associate degrees; and employer provided training. Opportunities for the Gulf Research Program: Middle-Skilled Workforce Needs is the summary of a workshop held on June 9-10, 2014 in Tampa, Florida. This workshop convened 40 thought leaders from the Gulf region's education, employer, and policymaking communities to facilitate a discussion of the current state of education and training pathways for preparing the region\'s middle-skilled workforce in both the short- and long-term and to identify perceived needs and potential opportunities that might be addressed by the GRP. Workshop participants discussed a variety of opportunities around building capacity in the region's middle-skilled workforce, including the need for competency-based education and training approaches and stronger partnerships among the region's employers and institutions of higher education.
Opportunities for the Gulf Research Program: Monitoring Ecosystem Restoration and Deep Water Environments
Author: Gulf Research Program
Publisher: National Academies Press
ISBN: 0309368111
Category : Science
Languages : en
Pages : 141
Book Description
Environmental monitoring in the Gulf of Mexico poses extensive challenges and significant opportunities. Multiple jurisdictions manage this biogeographically and culturally diverse region, whose monitoring programs tend to be project-specific by design and funding. As a result, these programs form more of a monitoring patchwork then a network. At the same time, the Gulf monitoring community faces a unique opportunity to organize and think differently about monitoring - including how best to allocate and manage the resources for this large marine ecosystem and its communities - as a result of the infusion of resources for environmental restoration and related activities after the Deepwater Horizon oil spill. Opportunities for the Gulf Research Program: Monitoring Ecosystem Restoration and Deep Water Environments summarizes a Gulf Research Program workshop held on September 3-4, 2014 in New Orleans, Louisiana. The workshop gathered about 40 participants from the energy industry, state and federal government, academia, and nongovernmental organizations to examine two broad issues that were seen as time-sensitive opportunities in light of significant investments in the Gulf for restoration and accelerating development of energy resources in the deep Gulf: monitoring ecosystem restoration and deep water environments. As participants explored potential opportunities for the Program to consider, they noted the essential role that communication and outreach play in successful monitoring, and the importance of applying an ecosystem service approach to monitoring, forging partnerships among stakeholders, and supporting efforts to organize and manage monitoring data.
Publisher: National Academies Press
ISBN: 0309368111
Category : Science
Languages : en
Pages : 141
Book Description
Environmental monitoring in the Gulf of Mexico poses extensive challenges and significant opportunities. Multiple jurisdictions manage this biogeographically and culturally diverse region, whose monitoring programs tend to be project-specific by design and funding. As a result, these programs form more of a monitoring patchwork then a network. At the same time, the Gulf monitoring community faces a unique opportunity to organize and think differently about monitoring - including how best to allocate and manage the resources for this large marine ecosystem and its communities - as a result of the infusion of resources for environmental restoration and related activities after the Deepwater Horizon oil spill. Opportunities for the Gulf Research Program: Monitoring Ecosystem Restoration and Deep Water Environments summarizes a Gulf Research Program workshop held on September 3-4, 2014 in New Orleans, Louisiana. The workshop gathered about 40 participants from the energy industry, state and federal government, academia, and nongovernmental organizations to examine two broad issues that were seen as time-sensitive opportunities in light of significant investments in the Gulf for restoration and accelerating development of energy resources in the deep Gulf: monitoring ecosystem restoration and deep water environments. As participants explored potential opportunities for the Program to consider, they noted the essential role that communication and outreach play in successful monitoring, and the importance of applying an ecosystem service approach to monitoring, forging partnerships among stakeholders, and supporting efforts to organize and manage monitoring data.
Building and Measuring Community Resilience
Author: National Academies of Sciences, Engineering, and Medicine
Publisher: National Academies Press
ISBN: 0309489725
Category : Social Science
Languages : en
Pages : 153
Book Description
The frequency and severity of disasters over the last few decades have presented unprecedented challenges for communities across the United States. In 2005, Hurricane Katrina exposed the complexity and breadth of a deadly combination of existing community stressors, aging infrastructure, and a powerful natural hazard. In many ways, the devastation of Hurricane Katrina was a turning point for understanding and managing disasters, as well as related plan making and policy formulation. It brought the phrase "community resilience" into the lexicon of disaster management. Building and Measuring Community Resilience: Actions for Communities and the Gulf Research Program summarizes the existing portfolio of relevant or related resilience measurement efforts and notes gaps and challenges associated with them. It describes how some communities build and measure resilience and offers four key actions that communities could take to build and measure their resilience in order to address gaps identified in current community resilience measurement efforts. This report also provides recommendations to the Gulf Research Program to build and measure resilience in the Gulf of Mexico region.
Publisher: National Academies Press
ISBN: 0309489725
Category : Social Science
Languages : en
Pages : 153
Book Description
The frequency and severity of disasters over the last few decades have presented unprecedented challenges for communities across the United States. In 2005, Hurricane Katrina exposed the complexity and breadth of a deadly combination of existing community stressors, aging infrastructure, and a powerful natural hazard. In many ways, the devastation of Hurricane Katrina was a turning point for understanding and managing disasters, as well as related plan making and policy formulation. It brought the phrase "community resilience" into the lexicon of disaster management. Building and Measuring Community Resilience: Actions for Communities and the Gulf Research Program summarizes the existing portfolio of relevant or related resilience measurement efforts and notes gaps and challenges associated with them. It describes how some communities build and measure resilience and offers four key actions that communities could take to build and measure their resilience in order to address gaps identified in current community resilience measurement efforts. This report also provides recommendations to the Gulf Research Program to build and measure resilience in the Gulf of Mexico region.
Understanding the Long-Term Evolution of the Coupled Natural-Human Coastal System
Author: National Academies of Sciences, Engineering, and Medicine
Publisher: National Academies Press
ISBN: 0309475872
Category : Science
Languages : en
Pages : 157
Book Description
The U.S. Gulf Coast provides a valuable setting to study deeply connected natural and human interactions and feedbacks that have led to a complex, interconnected coastal system. The physical landscape in the region has changed significantly due to broad-scale, long-term processes such as coastal subsidence and river sediment deposition as well as short-term episodic events such as hurricanes. Modifications from human activities, including building levees and canals and constructing buildings and roads, have left their own imprint on the natural landscape. This coupled natural-human coastal system and the individual aspects within it (physical, ecological, and human) are under increased pressure from accelerating environmental stressors such as sea level rise, intensifying hurricanes, and continued population increase with its accompanying coastal development. Promoting the resilience and maintaining the habitability of the Gulf Coast into the future will need improved understanding of the coupled natural-human coastal system, as well as effective sharing of this understanding in support of decision-making and policies. Understanding the Long-term Evolution of the Coupled Natural-Human Coastal System presents a research agenda meant to enable a better understanding of the multiple and interconnected factors that influence long-term processes along the Gulf Coast. This report identifies scientific and technical gaps in understanding the interactions and feedbacks between human and natural processes, defines essential components of a research and development program in response to the identified gaps, and develops priorities for critical areas of research.
Publisher: National Academies Press
ISBN: 0309475872
Category : Science
Languages : en
Pages : 157
Book Description
The U.S. Gulf Coast provides a valuable setting to study deeply connected natural and human interactions and feedbacks that have led to a complex, interconnected coastal system. The physical landscape in the region has changed significantly due to broad-scale, long-term processes such as coastal subsidence and river sediment deposition as well as short-term episodic events such as hurricanes. Modifications from human activities, including building levees and canals and constructing buildings and roads, have left their own imprint on the natural landscape. This coupled natural-human coastal system and the individual aspects within it (physical, ecological, and human) are under increased pressure from accelerating environmental stressors such as sea level rise, intensifying hurricanes, and continued population increase with its accompanying coastal development. Promoting the resilience and maintaining the habitability of the Gulf Coast into the future will need improved understanding of the coupled natural-human coastal system, as well as effective sharing of this understanding in support of decision-making and policies. Understanding the Long-term Evolution of the Coupled Natural-Human Coastal System presents a research agenda meant to enable a better understanding of the multiple and interconnected factors that influence long-term processes along the Gulf Coast. This report identifies scientific and technical gaps in understanding the interactions and feedbacks between human and natural processes, defines essential components of a research and development program in response to the identified gaps, and develops priorities for critical areas of research.
Opportunities in the Hydrologic Sciences
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309042445
Category : Science
Languages : en
Pages : 367
Book Description
Hydrologyâ€"the science of waterâ€"is central to our understanding of the global environment and its many problems. Opportunities in the Hydrologic Sciences explains how the science of water historically has played second fiddle to its applications and how we now must turn to the hydrologic sciences to solve some of the emerging problems. This first book of its kind presents a blueprint for establishing hydrologic science among the geosciences. Informative and well-illustrated chapters explore what we know about the forces that drive the global water system, highlighting promising research topics in hydrology's major subfields. The book offers specific recommendations for improving hydrologic education, from kindergarten through graduate school. In addition, a chapter on the basics of the science is interesting for the scientist and understandable to the lay reader. This readable volume is enhanced by a series of brief biographical sketches of past leaders in the field and fascinating vignettes on important applied problems, from the relevance of hydrology to radioactive waste disposal to the study of ancient water flows on Mars. The volume concludes with a report on current research funding and an outline of strategies for scientists and professional societies to advance the field. Opportunities in the Hydrologic Sciences is indispensable to policymakers in science and education, research managers in geoscience programs, researchers, educators, graduate students, and future hydrologists.
Publisher: National Academies Press
ISBN: 0309042445
Category : Science
Languages : en
Pages : 367
Book Description
Hydrologyâ€"the science of waterâ€"is central to our understanding of the global environment and its many problems. Opportunities in the Hydrologic Sciences explains how the science of water historically has played second fiddle to its applications and how we now must turn to the hydrologic sciences to solve some of the emerging problems. This first book of its kind presents a blueprint for establishing hydrologic science among the geosciences. Informative and well-illustrated chapters explore what we know about the forces that drive the global water system, highlighting promising research topics in hydrology's major subfields. The book offers specific recommendations for improving hydrologic education, from kindergarten through graduate school. In addition, a chapter on the basics of the science is interesting for the scientist and understandable to the lay reader. This readable volume is enhanced by a series of brief biographical sketches of past leaders in the field and fascinating vignettes on important applied problems, from the relevance of hydrology to radioactive waste disposal to the study of ancient water flows on Mars. The volume concludes with a report on current research funding and an outline of strategies for scientists and professional societies to advance the field. Opportunities in the Hydrologic Sciences is indispensable to policymakers in science and education, research managers in geoscience programs, researchers, educators, graduate students, and future hydrologists.
The Gulf Research Program
Author: National Research Council (U.S.). Advisory Group Gulf Research Program
Publisher:
ISBN: 9780309313063
Category : Political Science
Languages : en
Pages : 0
Book Description
"The Gulf Research Program: A Strategic Vision establishes the Program's foundation and introduces its mission, goals, and objectives. It describes some initial activities and sets out the Program's vision for contributing lasting benefit to the Gulf region and the nation. The Program is an extraordinary opportunity to foster science on a regional scale and over the long term. In 2010 the Deepwater Horizon explosion and fire in the Gulf of Mexico caused the largest offshore oil spill in U.S. history, resulting in significant impacts on the region's environment and residents. Legal settlements with the companies held responsible led the federal government to ask the National Academy of Sciences to form and administer a 30-year program to enhance oil system safety, human health, and environmental resources in the Gulf of Mexico and other U.S. continental shelf areas where offshore oil and gas exploration and production occur or are under consideration. The new Gulf Research Program will receive $500 million to support activities using three broad approaches: research and development, education and training, and environmental monitoring."--
Publisher:
ISBN: 9780309313063
Category : Political Science
Languages : en
Pages : 0
Book Description
"The Gulf Research Program: A Strategic Vision establishes the Program's foundation and introduces its mission, goals, and objectives. It describes some initial activities and sets out the Program's vision for contributing lasting benefit to the Gulf region and the nation. The Program is an extraordinary opportunity to foster science on a regional scale and over the long term. In 2010 the Deepwater Horizon explosion and fire in the Gulf of Mexico caused the largest offshore oil spill in U.S. history, resulting in significant impacts on the region's environment and residents. Legal settlements with the companies held responsible led the federal government to ask the National Academy of Sciences to form and administer a 30-year program to enhance oil system safety, human health, and environmental resources in the Gulf of Mexico and other U.S. continental shelf areas where offshore oil and gas exploration and production occur or are under consideration. The new Gulf Research Program will receive $500 million to support activities using three broad approaches: research and development, education and training, and environmental monitoring."--
Careers in Clinical Research
Author: Institute of Medicine
Publisher: National Academies Press
ISBN: 0309048907
Category : Medical
Languages : en
Pages : 345
Book Description
Transforming biological discoveries into medical treatment calls for a cadre of health professionals skilled in patient-oriented research. Yet many factors discourage talented persons from choosing clinical research as a profession. This new volume lays out the problem in detail, with specific recommendations to the federal government, the biotechnology and pharmaceutical industries, professional organizations, the health care industry, organized medicine, and the nation's universities and academic health centers. The volume explores How clinical research is conducted, what human resources are available, and what research opportunities lie ahead. Why health professionals become discouraged about clinical research. How the educational system has failed in this area and what programs stand out as models. How funding affects the supply of researchers. This practical book will be of immediate interest to public and private agencies funding research, research administrators, medical educators, health professionals, and those pursuing a career in clinical investigation.
Publisher: National Academies Press
ISBN: 0309048907
Category : Medical
Languages : en
Pages : 345
Book Description
Transforming biological discoveries into medical treatment calls for a cadre of health professionals skilled in patient-oriented research. Yet many factors discourage talented persons from choosing clinical research as a profession. This new volume lays out the problem in detail, with specific recommendations to the federal government, the biotechnology and pharmaceutical industries, professional organizations, the health care industry, organized medicine, and the nation's universities and academic health centers. The volume explores How clinical research is conducted, what human resources are available, and what research opportunities lie ahead. Why health professionals become discouraged about clinical research. How the educational system has failed in this area and what programs stand out as models. How funding affects the supply of researchers. This practical book will be of immediate interest to public and private agencies funding research, research administrators, medical educators, health professionals, and those pursuing a career in clinical investigation.
The Gulf Research Program
Author: Gulf Research Program
Publisher: National Academies Press
ISBN: 0309313090
Category : Political Science
Languages : en
Pages : 152
Book Description
In 2010 the Deepwater Horizon explosion and fire in the Gulf of Mexico caused the largest offshore oil spill in U.S. history, resulting in significant impacts on the region\'s environment and residents. Legal settlements with the companies held responsible led the federal government to ask the National Academy of Sciences to form and administer a 30-year program to enhance oil system safety, human health, and environmental resources in the Gulf of Mexico and other U.S. continental shelf areas where offshore oil and gas exploration and production occur or are under consideration. The new Gulf Research Program will receive $500 million to support activities using three broad approaches: research and development, education and training, and environmental monitoring. The Gulf Research Program: A Strategic Vision establishes the Program\'s foundation and introduces its mission, goals, and objectives. It describes some initial activities and sets out the Program\'s vision for contributing lasting benefit to the Gulf region and the nation. The Program is an extraordinary opportunity to foster science on a regional scale and over the long term. The document will be of interest to scientists, health professionals, engineers, and educators who wish to learn about, collaborate with, and submit proposals to the Program, and to all those who share the goal of enhancing resilience in areas where offshore energy production, vibrant communities, and dynamic ecosystems coexist.
Publisher: National Academies Press
ISBN: 0309313090
Category : Political Science
Languages : en
Pages : 152
Book Description
In 2010 the Deepwater Horizon explosion and fire in the Gulf of Mexico caused the largest offshore oil spill in U.S. history, resulting in significant impacts on the region\'s environment and residents. Legal settlements with the companies held responsible led the federal government to ask the National Academy of Sciences to form and administer a 30-year program to enhance oil system safety, human health, and environmental resources in the Gulf of Mexico and other U.S. continental shelf areas where offshore oil and gas exploration and production occur or are under consideration. The new Gulf Research Program will receive $500 million to support activities using three broad approaches: research and development, education and training, and environmental monitoring. The Gulf Research Program: A Strategic Vision establishes the Program\'s foundation and introduces its mission, goals, and objectives. It describes some initial activities and sets out the Program\'s vision for contributing lasting benefit to the Gulf region and the nation. The Program is an extraordinary opportunity to foster science on a regional scale and over the long term. The document will be of interest to scientists, health professionals, engineers, and educators who wish to learn about, collaborate with, and submit proposals to the Program, and to all those who share the goal of enhancing resilience in areas where offshore energy production, vibrant communities, and dynamic ecosystems coexist.