kartoza / WBR-SEMP

0 stars 3 forks source link

14. describe conservation function #54

Closed gubuntu closed 3 years ago

gubuntu commented 3 years ago
  1. CONSERVATION FUNCTION

14.1. At the level of landscapes and ecosystems (including soils, water and climate):

14.2 At the level of species and ecosystem diversity:

14.3. At the level of genetic diversity:

ref biosphere_reserve_nomination_form_2013_en.pdf

zacharlie commented 3 years ago

More Information Required

Much of the ecosystem description is avialable from the Waterberg District Bioregional Plan (Draft 2016), which should likely be supplied as an annex.

Very little resource is available for describing the intended management plans outlined as expected to be described in sections 14.2 and 14.3

Additionally, much of the questions from 14.3 ask for the same information, however it is expected that this should be at a level of detail unavailable from the current resources.

zacharlie commented 3 years ago

14.1.1 Describe and give the location of ecosystems and/or land cover types of the biosphere reserve.

The SANBI 2018 National Biodiversity Assessment data outlines a number of Biodiversity areas and their conservation status.

Whilst the vast majority of the study area is covered by Central Bushveld type bioregions, there are concentrations of endemic Mesic Highveld Grassland, with adiditonal minor areas of Mopane Bioregion and Alluvial Vegetation.

The following table outlines the coverage of the various biomes within the study area and their coverage areas within the respective biosphere reserve zones.

NBA Name BIOME BIOREGION Threat Status Endemic Core ha Buffer ha Transition ha
Central Sandy Bushveld Savanna Central Bushveld Bioregion Least Concern Endemic 69184.7363 290942.9775 199022.8680
Dwaalboom Thornveld Savanna Central Bushveld Bioregion Least Concern Likely not endemic 98063.7013 135573.5594 26432.3271
Dwarsberg-Swartruggens Mountain Bushveld Savanna Central Bushveld Bioregion Least Concern Likely not endemic 0.0000 0.0000 0.0000
Limpopo Ridge Bushveld Savanna Mopane Bioregion Least Concern Likely not endemic 0.0000 0.0000 0.0000
Limpopo Sweet Bushveld Savanna Central Bushveld Bioregion Least Concern Likely not endemic 46180.4908 100517.8188 6548.8884
Loskop Mountain Bushveld Savanna Central Bushveld Bioregion Least Concern Endemic 0.0000 0.0000 0.0000
Madikwe Dolomite Bushveld Savanna Central Bushveld Bioregion Least Concern Likely not endemic 8498.9018 9825.0726 279.1786
Makhado Sweet Bushveld Savanna Central Bushveld Bioregion Least Concern Endemic 6742.3491 51744.3321 249152.4578
Mamabolo Mountain Bushveld Savanna Central Bushveld Bioregion Least Concern Endemic 11588.9947 5296.4553 3144.5685
Musina Mopane Bushveld Savanna Mopane Bioregion Least Concern Likely not endemic 0.0000 0.0000 0.0000
Pilanesberg Mountain Bushveld Savanna Central Bushveld Bioregion Least Concern Endemic 0.0000 0.0000 0.0000
Polokwane Plateau Bushveld Savanna Central Bushveld Bioregion Least Concern Endemic 13706.1334 25659.3271 47152.4967
Poung Dolomite Mountain Bushveld Savanna Central Bushveld Bioregion Least Concern Endemic 5762.5126 0.0000 0.0000
Roodeberg Bushveld Savanna Central Bushveld Bioregion Least Concern Unsure - needs research 53979.1317 177118.0387 55718.3657
Springbokvlakte Thornveld Savanna Central Bushveld Bioregion Vulnerable Endemic 19631.3207 67767.0031 16453.5569
Strydpoort Summit Sourveld Grassland Mesic Highveld Grassland Bioregion Least Concern Endemic 5381.8828 2216.0610 0.0000
Subtropical Alluvial Vegetation Azonal Vegetation Alluvial Vegetation Least Concern Likely not endemic 3394.0570 9643.3498 1042.8609
Waterberg-Magaliesberg Summit Sourveld Grassland Mesic Highveld Grassland Bioregion Least Concern Endemic 27402.8233 14523.8759 0.0000
Waterberg Mountain Bushveld Savanna Central Bushveld Bioregion Least Concern Endemic 229827.2509 464327.8758 0.0000
Western Sandy Bushveld Savanna Central Bushveld Bioregion Least Concern Unsure - needs research 114270.9218 193245.4780 10513.3958
Zeerust Thornveld Savanna Central Bushveld Bioregion Least Concern Likely not endemic 0.0000 0.0000 0.0000

The biosphere reserve also includes coverage of multiple wetland areas.

Zone ha of wetlands
core 7276.7996
buffer 2230.2161
transition 95.7860

The proposed boundary encompasses regions of strategic water areas as outlined below.

Zone ha of strategic water area coverage
core 128434.4365
buffer 327350.116
transition 17854.2634

See also: Waterberg District Bioregional Plan (Draft 2016) - 2.4 Vegetation and Threatened Ecosystems

Maps

Biomes

Endemism

Threats

Note: It would be possible to include aggregation of national landcover coverage by type, however I think this is a significant processing requirement for a result which adds little value and is a large inclusion which may degrade the results. Referencing the existing nomination landcover and vegetation maps should be sufficient.

zacharlie commented 3 years ago

14.1.2 Describe the state and trends of the ecosystems and/or land cover types described above and the natural and human drivers of the trends.

A broad outline of the landcover change trends was produced with the trends.earth QGIS plugin produced by Conservation International, which analyses data available via the Google Earth Engine API.

The resulting data is a Land Degradation Neutrality, Sustainable Development Goal (SDG) Target 15.3 index.

More information on the mechanics of the trend calculation and the source datasets are available from the trends.earth website.

The complete area of interest for the study was analysed for the period of 2001-2015 (using the default plugin setings). A full outline of the results is available from the conservation_function/wbr_trends.ods spreadsheet, with the core outcomes outlined in the following table:

Landcover Trend Area (sq km) Percent of total land area
Total land area: 53 542.9 100.00%
Land area improved: 7 921.5 14.79%
Land area stable: 29 674.4 55.42%
Land area degraded: 15 939.0 29.77%
Land area with no data: 7.9 0.01%

A distinct concentration of improved areas is from the Worth Eastern part of the region, whilst the South West areas contain a significant portion of degraded areas identified by the trend analysis. Patterns may suggest strong impact of human activity as drivers of degradation (with degradation surrounding settlements), however the impact across largest areas seems to be driven by environmental changes and perhaps larger scale activities which are less urban in nature, such as mining and agriculture.

Trend

zacharlie commented 3 years ago

14.1.3 What kind of protection regimes (including customary and traditional) exist for the core area(s) and the buffer zone(s)?

Core areas are national protected areas (private game reserves/ national parks) protected by South African National law under the National Environmental Management: Protected Areas Act. Buffer and transition zones do not have the legal protections afforded to core areas and are managed via governance models that are outlined in the institutional aspects. Buffer zones are expected to have limited activity as they are considered by reginoal planning units to minimise the negative impact of human activities.

zacharlie commented 3 years ago

14.1.4 Which indicators or data are used to assess the efficiency of the actions/strategy used?

The Biosphere reserve is incorporated into the UNESCO Man and the Biosphere programme and utilises a cooperative governance model with agencies spanning regional, national and international public and private organisations. Multiple programs ensure the ongoing study and monitoring of numerous indicators.

The primary monitoring mechanisms which are intended to be implmented are outlined in the Waterberg District Bioregional Plan, which utilise the following core indicators:

  • Percentage and area (hectares) of Critical Biodiversity Areas and Ecological Support Areas that are contained within conservation orientated zones within Spatial Development Frameworks, Land Use Schemes and Environmental Management Frameworks. For this purpose, conservation orientated zones are defined as areas where the primary purpose is conservation or where there are significant restrictions on allowable land-uses.
  • Percentage and area (hectares) of Critical Biodiversity Areas and Ecological Support Areas that are under some form of conservation management (including both formal protection and conservation stewardship agreements).
  • Percentage and area (hectares) of Critical Biodiversity Areas and Ecological Support Areas where subdivision has been approved or where increased development rights have been granted.
  • Percentage and area (hectares) of Critical Biodiversity Areas and Ecological Support Areas where appropriate biodiversity management interventions have been applied (e.g. clearing of invasive alien species, biodiversity management plans).
  • Percentage and area (hectares) of Critical Biodiversity Areas and Ecological Support Areas that have been severely or irreversibly modified due to various land-use changes.
  • Percentage and area (hectares) of Critical Biodiversity Areas and Ecological Support Areas that are in a natural or near-natural state (key aspects would be level of invasive alien vegetation infestation, level of degradation due to overgrazing, sand mining or dumping etc.).
  • Percentage and area (hectares) of Critical Biodiversity Areas and Ecological Support Areas that have been rehabilitated to an ecological condition (viz. land management objective, Table 10) consistent with CBA2 or ESA1 areas.
zacharlie commented 3 years ago

14.2.1 Identify main groups of species or species of particular interest for the conservation objectives

Summary of important species for conservation outlined in 19.5 (https://github.com/kartoza/WBR-SEMP/issues/60)

Excerpt from Waterberg District Bioregional Plan (Draft 2016):

zacharlie commented 3 years ago

14.2.2 What are the pressures on key species?

Key pressures for all species include external factors such as climate change and habitat destruction. Due to the regional climate, water availability and quality is of critical importance and disruptions impact greatly on biodiversity in many ecosensitive areas. The Waterberg District Bioregional Plan outlines important aspects for the protection of water processes and climate change addaptation/ mitigation as follows:

The Waterberg District Bioregional Plan additionally outlines threats to many regions including the IBAs as follows:

Additional details on particular threats in specific areas can be outlined by the descriptions available for the Important Bird Areas (IBAs) within the study area:

zacharlie commented 3 years ago

14.2.3 What kind of measures and indicators are currently used?

Measures are outlined in the Waterberg District Bioregional Plan as described in 14.1.4

zacharlie commented 3 years ago

14.2.4 What actions are currently undertaken to reduce these pressures?

zacharlie commented 3 years ago

14.2.5 What actions do you intend to take to reduce these pressures?

The current Waterberg Disrict Bioregional Plan outlines the following monitoring plan:

The Waterberg District Municipality is the primary implementing agent of the Waterberg District Bioregional Plan, and is therefore responsible for monitoring, reviewing and updating the Bioregional Plan. Reviewing and updating the systematic biodiversity plan on which the Bioregional Plan is based is the responsibility of the Limpopo Department of Economic Development, Environment and Tourism (LEDET). Because there are numerous issues requiring joint planning (e.g. shared ecosystems, rivers and catchments), it would be efficient to establish an inter-agency structure for coordinating the implementation, monitoring, reviewing and updating of the Waterberg District Bioregional Plan. Alternatively, these activities would need to be undertaken independently by the Waterberg District Municipality. The following is recommended:

zacharlie commented 3 years ago

14.3.1 Indicate species or varieties that are of importance.

Species of importance for conservation are outlined in 14.2.1

Other species of importance for activities such as medicine, food production, agrobiodiversity, cultural practices etc are unkown at this time.

zacharlie commented 3 years ago

14.3.2 What ecological, economic or social pressures or changes may threaten these species or varieties?

Answered 14.2.2 What are the pressures on key species. No further information is currently available for distinct species of special importance.

zacharlie commented 3 years ago

14.3.3 What indicators, at the level of the species, are used, or will be used, to assess the evolution of population status and associated use?

For species of importance for conservation, the Global Biodiversity Information Facility, or GBIF program, provides an accessible database of spatial species observations and occurences. Additional species information data is periodically obtained from SANBI in the form of database searches and literature sources as detailed in the processes outlined in the Waterberg District Bioregional Plan.

For other species of importance, no further information is available at this time.

zacharlie commented 3 years ago

14.3.4 What measures will be used to conserve genetic diversity and practices associated with their conservation?

The extension of the Waterberg Biosphere Reserve entails the ongoing cooperation between many entities and a commitment from regional planning units to provide consideration for the conservation of important biodiversity regions, with additional oversight from the DRDLR with it's regional authority as outlined in the SPUMA Act.

Additionally, within the Waterberg District Bioregional Plan, a Biodiversity-Compatible Land use framework has been outlined for linking the CBA Map categories to land use planning and decision-making guidelines based on a set of land management objectives for achieving a desired ecological state.

gubuntu commented 3 years ago

thanks @zacharlie, very nicely structured and presented