Grasberg Reserve
IUCN Not ReportedNature Reserve · 2001
78 km²
Commune · ZAF
Letsemeng
South Africa
BShArid, steppe, hot(58 %)
Species observed
3 995
Observations
52 444
Area
9 828,6km²
Ecological tissue
Sample of 16 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique
Indicateurs du tissu écologique
Tissu écologique de Letsemeng : 13 espèces reliées par 14 interactions GloBI sur 3 types (connectance 11.7%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
16
Interactions affichées
14
Connectance
0.117
Patrimoniales
0
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
3 995 distinct species · 52 444 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
17,9°C
Annual rain
424mm
Warmest m°
32,1°C
Coldest m°
2,7°C
Elevation: 1 222 m on average (min 1 083 m, max 1 456 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
17,9°C
Annual rain
424mm
Warmest month
32,1°C
Coldest month
2,7°C
Mean alt.
1 222m
Min
1 083m
Max
1 456m
Std. dev.
62m
Köppen-Geiger (dominant)
BShArid, steppe, hot(58 %)Arid
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
7,6
Org. C
7,8g/kg
Clay
25,1%
Sand
58,0%
Silt
16,9%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: vbGLiMaggregated to Xhariep
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
7,5
Org. C
10,3g/kg
Clay
22,4%
Sand
60,3%
Silt
17,3%
5–15 cm
pH H₂O
7,6
Org. C
7,1g/kg
Clay
21,7%
Sand
60,7%
Silt
17,6%
15–30 cm
pH H₂O
7,7
Org. C
5,9g/kg
Clay
31,1%
Sand
53,1%
Silt
15,8%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest2.4%
Crops19.8%
Built-up0.1%
Bare soil7.9%
Other (grassland, water…)69.9%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology35 basins · 44 lakes · 13 rivers
Hydrology metrics for this exact territory
Stream length here
755,4km
Lake surface here
46,20km²
Basins crossed
35
Max stream order
6
Max drainage
92 979km²
Discharge in basins
335,7m³/s
Mean precip.
417mm/an
Mean T°
17,3°C
Moisture idx
-0,74
Mean runoff
15mm/an
Mean elev. (basins)
1 234m
Watersheds crossing here
- Bassin de Orange-Riet River Canalsub-area1 494,1 km²overlap1066.40 km²11%
- Bassin de Modder Riversub-area862,7 km²overlap799.70 km²8%
- Bassin de Modder Riversub-area942,2 km²overlap751.20 km²8%
- Bassin de Riet Riversub-area795,9 km²overlap749.50 km²8%
- Bassin de Modder Riversub-area1 335 km²overlap692.28 km²7%
- Bassin de Modder Riversub-area622,8 km²overlap622.04 km²6%
- Bassin de Riet Riversub-area594,6 km²overlap576.77 km²6%
- Basin #58130sub-area630 km²overlap524.20 km²5%
- Bassin de Orange-Riet River Canalsub-area478,2 km²overlap477.66 km²5%
26 more basinssorted by overlap
- Bassin de Bergriviersub-area1 164 km²overlap396.40 km²4%
- Bassin de Orange-Riet River Canalsub-area654,4 km²overlap326.80 km²3%
- Bassin de Riet Riversub-area415,9 km²overlap306.56 km²3%
- Bassin de Riet Riversub-area265,3 km²overlap264.98 km²3%
- Bassin de Orange Riversub-area665,8 km²overlap216.77 km²2%
- Bassin de Orange Riversub-area670,5 km²overlap206.41 km²2%
- Bassin de Modder Riversub-area2 222,8 km²overlap206.06 km²2%
- Bassin de Modder Riversub-area1 192,7 km²overlap200.88 km²2%
- Basin #31970sub-area169,7 km²overlap169.45 km²2%
- Bassin de Modder Riversub-area159,5 km²overlap159.31 km²2%
- Bassin de Riet Riversub-area154,8 km²overlap154.64 km²2%
- Bassin de Riet Riversub-area140 km²overlap139.66 km²1%
- Bassin de Modder Riversub-area715,2 km²overlap137.42 km²1%
- Bassin de Riet Riversub-area129,8 km²overlap123.64 km²1%
- Bassin de Riet Riversub-area875,4 km²overlap119.28 km²1%
- Basin #28790sub-area260,2 km²overlap85.36 km²1%
- Bassin de Riet Riversub-area82,1 km²overlap82.03 km²1%
- Bassin de Orange Riversub-area137,2 km²overlap79.11 km²1%
- Bassin de Orange Riversub-area477,5 km²overlap64.36 km²1%
- Bassin de Kromellenboogspruitsub-area270,2 km²overlap40.35 km²0%
- Bassin de Riet Riversub-area36,3 km²overlap35.41 km²0%
- Bassin de Riet Riversub-area420 km²overlap19.46 km²0%
- Bassin de Riet Riversub-area16,7 km²overlap16.52 km²0%
- Bassin de Riet Riversub-area184,5 km²overlap16.26 km²0%
- Bassin de Moddersub-area1 985 km²overlap0.97 km²0%
- Bassin de Orange Riversub-area3,1 km²overlap0.73 km²0%
Lakes (44, top by area)
- R.K. Rouxarea97,6 km²avg depth33.2 m
- Liebenbergspanarea5,5 km²avg depth3.8 m
- Kalkfontein Damarea4,7 km²avg depth69.5 m
- Lake #83834area4 km²avg depth5.2 m
- Lake #83827area3,4 km²avg depth2.7 m
- Lake #83789area3,2 km²avg depth2.9 m
- Lake #83917area1,6 km²avg depth2.3 m
- Lake #83773area1,6 km²avg depth2.4 m
- Lake #83775area1,1 km²avg depth2.1 m
35 more lakes
- Lake #83850area1 km²avg depth3.0 m
- Lac 1422011area1 km²avg depth3.5 m
- Lac 1422312area0,9 km²avg depth3.0 m
- Lac 1422266area0,8 km²avg depth2.4 m
- Lac 1422386area0,8 km²avg depth2.7 m
- Lac 1421654area0,7 km²avg depth2.2 m
- Lac 1421666area0,7 km²avg depth3.2 m
- Lac 1421672area0,6 km²avg depth2.6 m
- Lac 1421734area0,6 km²avg depth3.2 m
- Lac 1422035area0,5 km²avg depth2.3 m
- Lac 1421958area0,5 km²avg depth1.5 m
- Lac 1421801area0,5 km²avg depth2.9 m
- Lac 1421649area0,5 km²avg depth2.3 m
- Lac 1421714area0,5 km²avg depth3.1 m
- Lac 1421692area0,4 km²avg depth2.5 m
- Lac 1421812area0,3 km²avg depth3.1 m
- Lac 1421906area0,3 km²avg depth1.8 m
- Lac 1422044area0,3 km²avg depth2.9 m
- Lac 1422291area0,3 km²avg depth2.3 m
- Lac 1421822area0,3 km²avg depth2.1 m
- Lac 1421828area0,3 km²avg depth3.2 m
- Lac 1422114area0,3 km²avg depth2.6 m
- Lac 1422192area0,3 km²avg depth2.3 m
- Lac 1422038area0,2 km²avg depth2.3 m
- Lac 1422039area0,2 km²avg depth2.7 m
- Lac 1421646area0,2 km²avg depth1.7 m
- Lac 1421785area0,2 km²avg depth2.4 m
- Lac 1421670area0,2 km²avg depth1.7 m
- Lac 1421915area0,2 km²avg depth2.1 m
- Lac 1422046area0,2 km²avg depth1.9 m
- Lac 1421949area0,2 km²avg depth1.6 m
- Lac 1421662area0,1 km²avg depth0.9 m
- Lac 1421657area0,1 km²avg depth2.5 m
- Lac 1421623area0,1 km²avg depth1.7 m
- Lac 1421637area0,1 km²avg depth1.6 m
Rivers / streams (13, ord ≥ 4)
- Riet Riverord 7len here322.48 km38%total840 km
- Modder Riverord 5len here188.59 km59%total318 km
- Orange Riverord 9len here68.75 km2%total3061 km
- Bergrivierord 4len here67.83 km70%total96 km
- Ramah Canalord 3len here34.82 km99%total35 km
- Orange-Riet River Canalord 2len here22.05 km100%total22 km
- Lemoenspruitord 3len here20.28 km100%total20 km
- Orange-Riet River Canalord 2len here9.37 km100%total9 km
- North Canalord 1len here5.68 km100%total6 km
- Siphonord 5len here4.96 km19%total26 km
- Orange-Riet River Canalord 2len here4.50 km100%total5 km
- Orange-Riet River Canalord 1len here3.75 km100%total4 km
1 more river segmentssorted by Strahler order + length
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,0nW
Built-up
5,3%
Pesticides
20,9kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas17
IUCN Not Reported · 17
Tuinhoek Reserve
IUCN Not ReportedNature Reserve · 2001
74 km²
Rolfontein Provincial Nature Reserve
IUCN Not ReportedNature Reserve · 1994
63 km²
Nielsview Nature Reserve
IUCN Not ReportedNature Reserve · 1998
60 km²
Kalkfontein Dam Nature Reserve
IUCN Not ReportedNature Reserve · 1988
57 km²
Chesas Peak Private Nature Reserve
IUCN Not ReportedNature Reserve · 1998
38 km²
Complete list17 protected areas
- Grasberg ReserveNature ReserveIUCN Not Reported200178 km²
- Tuinhoek ReserveNature ReserveIUCN Not Reported200174 km²
- Rolfontein Provincial Nature ReserveNature ReserveIUCN Not Reported199463 km²
- Nielsview Nature ReserveNature ReserveIUCN Not Reported199860 km²
- Kalkfontein Dam Nature ReserveNature ReserveIUCN Not Reported198857 km²
- Chesas Peak Private Nature ReserveNature ReserveIUCN Not Reported199838 km²
- Gemsbokpark Private Nature ReserveNature ReserveIUCN Not Reported199534 km²
- Zoutpansdrif 246Nature ReserveIUCN Not Reported197531 km²
- Roodepoortjie 144Nature ReserveIUCN Not Reported197523 km²
- Oliewenberg ReserveNature ReserveIUCN Not Reported200121 km²
- Thanda Tula ReserveNature ReserveIUCN Not Reported200019 km²
- Sondersorg Nature ReserveNature ReserveIUCN Not Reported200018 km²
- Doornhoek Game ReserveNature ReserveIUCN Not Reported199812 km²
- Koppiesdam Game ReserveNature ReserveIUCN Not Reported200111 km²
- Grootfontein Private Nature Reserve - JacobsdalNature ReserveIUCN Not Reported19908 km²
- Middelfontein Game ReserveNature ReserveIUCN Not Reported20006 km²
- Klipnek Nature ReserveNature ReserveIUCN Not Reported20005 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN