in the river with a view to the conservat.ion and preservation of living resources”, m/ and “TO protect and preserve the aquatic environment , I.“. J&Q/ Similarly, in the 1978 Convention relating to the status of the River Gambia, Qambia, Guinea and Sensgal egreed that “No project which is likely to bring about eerious modiZications on the characteristics of the river’s rdgime, .,.the sanitary state of the waters, the biological - characteristics of its fauna and its flora . . . will be implemented without the prior approval of the contracting States.” J.&J/ The nine States parties to ’ the 1963 Act regarding navigation and economic co-operation between the States l.w For more extensive surveys of relovant authorities, see the Fourth report of the Special Rapporteur (A/CN.4/412), pares. 26--861 and the Third report of the second Special Rapporteur, YnaElznnlr . . . 19&, vol. II (Part One), document AXN.41340, pares. 243-336, lw Statute of th> Uruguay River, art. 36, Uruguay, Ministsrio de Relaciones Exteriores, && OBf0l.~..UIF~~~~~QBn~na,.._~~3.9_1~~. (Montevideo, 19611, pa 593. I=/ m., art. 37. l&J/ L&&A., art. 41. I6.u Convention relating to the status of the River Gambia, 30 Juno 1978 (Gambia, Guinea, Senegal), reproduced in ~-0.~tias..c~.ncer.~na.~.he_ LLtilioatiurl-atipnal -~a_tar_..Sv~~a-Lnr__Qthar_~~r:pas~§ . . !ihuUim4eLivn, ALXka, Natural Resources/Water Series No. 13, (ST/ESA/141) (1984), Treaty No. 10, p. 39, art. 4, p.40 (hereafter referred to as “Natural ResourcaG/Wat.or Sorier; No. 13”), - 152 -of the Niger Basin “undertake to establish close co-operation with regard to the study and the execution of any project likely to have an appreciable effect on certain features of the regime of the River, its tributaries and sub-tributaries, . . . the sanitary conditions of their waters, and the biological characteristics of their fauna and flora.tt m/ The 1978 Agreement between Canada and the United States on Great Lakes Water Quality provides
**Analysis**
The text appears to be discussing international agreements and treaties related to the conservation and preservation of natural resources, specifically water resources. The agreements mentioned are focused on the protection of the aquatic environment, the study and execution of projects that may affect the river's regime, and the establishment of close cooperation among countries with regard to the management of the river's resources. This suggests that the text is primarily related to the natural resources and environment category.

**Category**
Natural resources and environment