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Adapting to Uncertainties: Assessing the impacts of dams, Climate Change, and resource shifts on farming livelihoods in the Lower Mekong region
Adapting to Uncertainties: Assessing the impacts of dams, Climate Change, and resource shi...
Adapting to Uncertainties: Assessing the impacts of dams, Climate Change, and resource shifts on farming livelihoods in the Lower Mekong region

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자료유형  
 학위논문 서양
최종처리일시  
20250211153043
ISBN  
9798346745013
DDC  
338.9
저자명  
Sainjoo, Snehalata.
서명/저자  
Adapting to Uncertainties: Assessing the impacts of dams, Climate Change, and resource shifts on farming livelihoods in the Lower Mekong region
발행사항  
[Sl] : Michigan State University, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
129 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-06, Section: B.
주기사항  
Advisor: Kramer, Daniel Boyd.
학위논문주기  
Thesis (Ph.D.)--Michigan State University, 2024.
초록/해제  
요약The Lower Mekong region (LMR) is experiencing rapid social-ecological changes due to infrastructure development and climate change. The construction of dams along the Mekong River and its tributaries has triggered significant biophysical alterations, including changes in water flow, nutrient cycling, and sediment exchange. These changes have profound implications for the 86 percent of the Lower Mekong Basin (LMB) population who rely on the river for their livelihoods, primarily in agriculture and fisheries. Besides, the region faces an increasing frequency of extreme climate events, particularly droughts and floods. These combined pressures have heightened the vulnerability of resource-dependent communities, further exacerbated by unjust resource governance that often marginalizes them.This dissertation explores the multifaceted challenges faced by resource-dependent communities in the LMR, with a particular focus on their responses to the uncertainties driven by dams, climate change, and resource shifts. The study hypothesizes that most noticeable changes are occurring at the household level, influenced by their perceptions of climate risk and their capacity to access and utilize vital livelihood resources. These shifts exert pressures on land and watershed ecosystems, raising concerns over the sustainability of critical ecosystem services. Adopting a mixed-method approach, this research unfolds across three chapters:Chapter 1 assesses the impacts of dams on various livelihood resources in downstream farming communities at different distances from affected rivers, using unbalanced panel data analysis. The findings reveal a decrease in natural and financial resource accessibility, alongside a positive effect on physical resource accessibility post-dam construction. Communities closer to dams (10 km) experience more pronounced negative effects on natural resources, while financial resource access improves for those within 20 km. Physical resources show spatial improvements, primarily within 10 km. Although no temporal effects are observed for social resources, spatial effects indicate reduced accessibility near dams. However, communities nearby irrigation dam experience increased social resource access post-dam construction. These findings highlight the spatial and temporal variations in resource impacts, emphasizing key areas for improving Environmental Impact Assessments (EIAs) and adaptation strategies to better support downstream ecosystems and communities.Chapter 2 delves into drought risk perceptions among households in irrigated and flood-pulse communities, exploring the factors explaining variations in risk perception at both household and community levels. Utilizing a mixed-effects model alongside qualitative information from interviews and observations, this chapter reveals the significance of psychological and socio-economic factors, including households' knowledge of drought, perceived ability, affiliation with various organizations, and wealth condition, shaping risk perception. These findings suggest the development of context-tailored risk communication and management strategies, enhancing the adaptive capacity of vulnerable communities.Chapter 3 examines the role of perceived peer effect and formal networks in shaping farmers' adaptive behaviors using influence network modeling. The findings suggest the need for leveraging both formal and informal networks, increasing knowledge about drought and improving economic conditions to build farmers' capacity to navigate climate-related challenges and adopt practices that ensure the sustainability of resource-dependent farming communities in Cambodia and beyond.
일반주제명  
Sustainability
일반주제명  
Climate change
일반주제명  
Natural resource management
일반주제명  
Aquatic sciences
키워드  
Lower Mekong region
키워드  
Social-ecological changes
키워드  
Infrastructure development
기타저자  
Michigan State University Fisheries and Wildlife - Doctor of Philosophy
기본자료저록  
Dissertations Abstracts International. 86-06B.
전자적 위치 및 접속  
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MARC

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■1001  ▼aSainjoo,  Snehalata.▼0(orcid)0000-0003-3052-1272
■24510▼aAdapting  to  Uncertainties:  Assessing  the  impacts  of  dams,  Climate  Change,  and  resource  shifts  on  farming  livelihoods  in  the  Lower  Mekong  region
■260    ▼a[Sl]▼bMichigan  State  University▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a129  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-06,  Section:  B.
■500    ▼aAdvisor:  Kramer,  Daniel  Boyd.
■5021  ▼aThesis  (Ph.D.)--Michigan  State  University,  2024.
■520    ▼aThe  Lower  Mekong  region  (LMR)  is  experiencing  rapid  social-ecological  changes  due  to  infrastructure  development  and  climate  change.  The  construction  of  dams  along  the  Mekong  River  and  its  tributaries  has  triggered  significant  biophysical  alterations,  including  changes  in  water  flow,  nutrient  cycling,  and  sediment  exchange.  These  changes  have  profound  implications  for  the  86  percent  of  the  Lower  Mekong  Basin  (LMB)  population  who  rely  on  the  river  for  their  livelihoods,  primarily  in  agriculture  and  fisheries.  Besides,  the  region  faces  an  increasing  frequency  of  extreme  climate  events,  particularly  droughts  and  floods.  These  combined  pressures  have  heightened  the  vulnerability  of  resource-dependent  communities,  further  exacerbated  by  unjust  resource  governance  that  often  marginalizes  them.This  dissertation  explores  the  multifaceted  challenges  faced  by  resource-dependent  communities  in  the  LMR,  with  a  particular  focus  on  their  responses  to  the  uncertainties  driven  by  dams,  climate  change,  and  resource  shifts.  The  study  hypothesizes  that  most  noticeable  changes  are  occurring  at  the  household  level,  influenced  by  their  perceptions  of  climate  risk  and  their  capacity  to  access  and  utilize  vital  livelihood  resources.  These  shifts  exert  pressures  on  land  and  watershed  ecosystems,  raising  concerns  over  the  sustainability  of  critical  ecosystem  services.  Adopting  a  mixed-method  approach,  this  research  unfolds  across  three  chapters:Chapter  1  assesses  the  impacts  of  dams  on  various  livelihood  resources  in  downstream  farming  communities  at  different  distances  from  affected  rivers,  using  unbalanced  panel  data  analysis.  The  findings  reveal  a  decrease  in  natural  and  financial  resource  accessibility,  alongside  a  positive  effect  on  physical  resource  accessibility  post-dam  construction.  Communities  closer  to  dams  (10  km)  experience  more  pronounced  negative  effects  on  natural  resources,  while  financial  resource  access  improves  for  those  within  20  km.  Physical  resources  show  spatial  improvements,  primarily  within  10  km.  Although  no  temporal  effects  are  observed  for  social  resources,  spatial  effects  indicate  reduced  accessibility  near  dams.  However,  communities  nearby  irrigation  dam  experience  increased  social  resource  access  post-dam  construction.  These  findings  highlight  the  spatial  and  temporal  variations  in  resource  impacts,  emphasizing  key  areas  for  improving  Environmental  Impact  Assessments  (EIAs)  and  adaptation  strategies  to  better  support  downstream  ecosystems  and  communities.Chapter  2  delves  into  drought  risk  perceptions  among  households  in  irrigated  and  flood-pulse  communities,  exploring  the  factors  explaining  variations  in  risk  perception  at  both  household  and  community  levels.  Utilizing  a  mixed-effects  model  alongside  qualitative  information  from  interviews  and  observations,  this  chapter  reveals  the  significance  of  psychological  and  socio-economic  factors,  including  households'  knowledge  of  drought,  perceived  ability,  affiliation  with  various  organizations,  and  wealth  condition,  shaping  risk  perception.  These  findings  suggest  the  development  of  context-tailored  risk  communication  and  management  strategies,  enhancing  the  adaptive  capacity  of  vulnerable  communities.Chapter  3  examines  the  role  of  perceived  peer  effect  and  formal  networks  in  shaping  farmers'  adaptive  behaviors  using  influence  network  modeling.  The  findings  suggest  the  need  for  leveraging  both  formal  and  informal  networks,  increasing  knowledge  about  drought  and  improving  economic  conditions  to  build  farmers'  capacity  to  navigate  climate-related  challenges  and  adopt  practices  that  ensure  the  sustainability  of  resource-dependent  farming  communities  in  Cambodia  and  beyond.
■590    ▼aSchool  code:  0128.
■650  4▼aSustainability
■650  4▼aClimate  change
■650  4▼aNatural  resource  management
■650  4▼aAquatic  sciences
■653    ▼aLower  Mekong  region
■653    ▼aSocial-ecological  changes
■653    ▼aInfrastructure  development
■690    ▼a0640
■690    ▼a0404
■690    ▼a0528
■690    ▼a0792
■71020▼aMichigan  State  University▼bFisheries  and  Wildlife  -  Doctor  of  Philosophy.
■7730  ▼tDissertations  Abstracts  International▼g86-06B.
■790    ▼a0128
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17164768▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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