Ecosystem goods and services 101 The EGS review and comparative - - PowerPoint PPT Presentation

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ecosystem goods and services 101
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Ecosystem goods and services 101 The EGS review and comparative - - PowerPoint PPT Presentation

Jul 18, 2023 296 likes •529 views

Introductory comments re the context of the workshop Ecosystem goods and services 101 The EGS review and comparative analysis method Identification of the EGS related to community livelihoods / societal resilience EGS review and

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  • Introductory comments re the context of the workshop
  • Ecosystem goods and services 101
  • The EGS review and comparative analysis method
  • Identification of the EGS related to community

livelihoods / societal resilience

  • EGS review and comparative analysis
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Nature plays a substantial role in providing a wide variety

  • f vital life supporting goods and services.

Conversely, where nature is degraded or replaced, not

  • nly are these goods and services lost, but there are

consequences which inevitably manifest in costs to society. We need to understand these trade-offs so that we can make informed decisions regarding our options.

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TIME STREAM FLOW

CATCHMENT HYDROLOGY

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For poor people, the greatest gains in well-being will

  • ccur through more equitable and secure access to

ecosystem services. In the long run, the rich can contribute greatly to human well-being by reducing their substantial impacts on ecosystems and by facilitating greater access to ecosystem services by the poor (MEA, 2005). We just need to be careful when labelling people “poor” and “rich”.

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Habitat type ES value per ha ( R ) Ecosystem Services value 2011 ( R ) Ecosystem Services value 2021 ( R ) Ecosystem Services value 2031 ( R )

Grasslands 4985 11 383 226 762 9 946 642 266 5 794 238 278 Forests 42 776 2 523 915 661 2 205 392 786 1 927 068 094 Rivers (km) 181 032 18 720 604 702 8 720 604 702 18 720 604 702 Savannahs 8 545 16 665,552 108 14 562 328 277 8 483 023 484 Coastal and dune vegetation 42 776 595 949 056 520 739 171 303 347 276 Wetlands 417 228 38 375 792 812 33 532 696 020 19 533 871 398 Estuaries and mangroves 486 338 10 764 223 764 9 405 758 603 8 218 734 284 Riparian and floodplain veg and swamp forests 417 132 43 519 497 633 38 027 255 677 22 152 096 616 Sand forests 25 661 308 409 845 269 487 946 235 478 063 Coastal grassland and thickets 8 228 2 305 878 705 343 248 335 173 727 884 Sandy beach, rocky shores and surf zone 34 298 274 775 636 160 067 140 139 865 043 Near-shore environments and reefs 34 298 4 232 933 446 4 232 933 446 2 821 955 631 TOTAL 149 670 760 128 132 927 154 369 89 504 010 754

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  • List, define, score EGS for Scenario 1
  • Discuss Scenario 2 and score implications for EGS

scores

  • Discuss and build Scenario 3 and score implications

for EGS scores

  • Reflect on analysis outcomes and refine where

necessary

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DESCRIPTION OF PROVISIONING SERVICES STATUS QUO LOW ROAD SCENARIO HIGH ROAD SCENARIO Capacity to deliver Dependence Beneficiaries Weighted score Capacity to deliver Dependence Beneficiaries Weighted score Capacity to deliver Dependence Beneficiaries Weighted score

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Applying ecosystem services thinking to the assessment

  • f land cover integrity in relation to catchment services

3 the land cover type has the maximum ability to deliver ecosystem services 2 the land cover type has a moderately reduced ability to deliver ecosystem services 1 the land cover type has a significantly reduced ability to deliver ecosystem services the ability of the land cover type to deliver ecosystem services has been lost but not to the extent that dis-services are produced and delivered

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a low level of dis-services are produced and delivered by the land cover type

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a moderate level of dis-services are produced and delivered by the land cover type

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a high level of dis-services are produced and delivered by the land cover type

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EGS DESCRIPTION SCENARIO Capacity to deliver Dependence Beneficiaries Weighted score 3 to -3 1= low 2 = moderate 3 = high 1 = 0 – 20% 2 = 21 – 40% 3 = 41 – 60% 4 = 61 – 80% 5 = 81 – 100% cap*dep*ben

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1 2 3 4 5 Sand for brick making Wood for fuel for cooking and heating Wood for construction (houses and fencing) Wood for customary household implements and furniture Fodder for livestock Surface water for domestic use Ground water domestic use Surface water for livestock Surface water for food production Ground water for food production Wild fruits and vegetables Honey Protein (fish) Protein (meat from wildlife) Medicinal plants Grass, reeds & clay for construction Religious / cultural adornments made from wild products (skins) Hand crafts and household items (traditional beads, clay, dyes, reed… Scenario 1: Status Quo Scenario 2: Mine Scenario 3: Sustainable Livelihoods