The Mara River crossings

Assembled from 79 blocks · 1 evidence · 46 related

1. Story
2. Herds reach the northern Serengeti and the Maasai Mara and cross the Mara River repeatedly in both directions rather than once. Mass drownings occurred in at least 13 of 15 monitored years, delivering an average of about 6,250 carcasses and 1,100 tonnes of biomass to the river annually — a nutrient subsidy comparable to adding ten blue whales to a mid-sized river each year.
3. Knowledge
4. Blue Wildebeest (Connochaetes taurinus)
5. Serengeti National Park
6. Maasai Mara National Reserve
7. Mara River
8. Mara River Crossings
9. Nile Crocodile (Crocodylus niloticus)
10. The Mara River crossings
11. Connections
12. Mara River Crossings
13. Mara River
14. Maasai Mara National Reserve
15. Serengeti National Park
16. Blue Wildebeest (Connochaetes taurinus)
17. Nile Crocodile (Crocodylus niloticus)
18. Mara River
19. Mara River
20. The herds cross the Grumeti River in the western corridor
21. The Mara River crossings
22. Blue Wildebeest (Connochaetes taurinus)
23. Maasai Mara National Reserve
24. Serengeti National Park
25. Mara River Crossings
26. Mara River Crossings
27. The Mara River crossings
28. Serengeti National Park
29. Community conservancy (CBNRM model)
30. Mara River
31. The Mara–Loita migration collapses by about 81%
32. Edge degradation squeezes wildlife into the ecosystem core
33. The Mara River crossings
34. African lion (Panthera leo)
35. Kenya bans sport hunting nationwide
36. Blue Wildebeest (Connochaetes taurinus)
37. Maasai Mara National Reserve
38. Mara River
39. Serengeti–Mara Rainfall Gradient
40. Serengeti Biodiversity Programme
41. Rinderpest disappears from the Serengeti–Mara ecosystem
42. The wildebeest population irrupts from roughly 250,000 to over a million
43. Serengeti National Park inscribed on the UNESCO World Heritage List
44. Drought kills roughly a quarter of the wildebeest population
45. Edge degradation squeezes wildlife into the ecosystem core
46. The Mara River crossings
47. TAWIRI Aerial Point Survey estimates 1,366,109 wildebeest
48. AI satellite survey returns fewer than 600,000, and is contested
49. Ngorongoro Conservation Area
50. Maasai
51. Fortress conservation
52. Serengeti National Park established on land used by Maasai pastoralists
53. Serengeti closed to residence; Ngorongoro Conservation Area created and Maasai evicted from the plains
54. Serengeti–Mara Rainfall Gradient
55. Thomson's Gazelle (Eudorcas thomsonii)
56. Western Corridor and Grumeti Reserves
57. Southern Serengeti Short-Grass Plains
58. Serengeti National Park
59. Southern Serengeti Short-Grass Plains
60. Mara River
61. Plains Zebra (Equus quagga)
62. Nile Crocodile (Crocodylus niloticus)
63. Spotted Hyena (Crocuta crocuta)
64. Serengeti Biodiversity Programme
65. Rinderpest disappears from the Serengeti–Mara ecosystem
66. The wildebeest population irrupts from roughly 250,000 to over a million
67. Drought kills roughly a quarter of the wildebeest population
68. The Mara–Loita migration collapses by about 81%
69. Edge degradation squeezes wildlife into the ecosystem core
70. The rut
71. The calving pulse on the short-grass plains
72. The herds cross the Grumeti River in the western corridor
73. The Mara River crossings
74. TAWIRI Aerial Point Survey estimates 1,366,109 wildebeest
75. AI satellite survey returns fewer than 600,000, and is contested
76. Blue Wildebeest (Connochaetes taurinus)
77. The Mara River crossings
78. Evidence
79. An average of about 6,250 wildebeest carcasses and 1,100 tonnes of biomass enter the Mara River annually, with mass drownings in at least 13 of 15 monitored years, forming a major nutrient subsidy to the river food web