. Bulletin of the British Museum (Natural History) Zoology. MONGOLIAN FISHES 181. Fig. 6 Principal collecting locality Herelen Gol, 60 km downstream of bridge in Kentei Aimak, western bank. (Above opposite) Willow shoots along side channel, (Below opposite) main river in spate and (Above) isolated pond in flood plain. Nuur is shown by the conductivity readings given below (p. 187). In drying pools an evaporate is produced which can be Table 1 Element concentrations (ug/g fresh weight) in salt samples from two sites around shore of isolated water body off Boon Tsagaan Nuur. Element Al
. Bulletin of the British Museum (Natural History) Zoology. MONGOLIAN FISHES 181. Fig. 6 Principal collecting locality Herelen Gol, 60 km downstream of bridge in Kentei Aimak, western bank. (Above opposite) Willow shoots along side channel, (Below opposite) main river in spate and (Above) isolated pond in flood plain. Nuur is shown by the conductivity readings given below (p. 187). In drying pools an evaporate is produced which can be Table 1 Element concentrations (ug/g fresh weight) in salt samples from two sites around shore of isolated water body off Boon Tsagaan Nuur. Element Al B Ca Cd Co Cr Cu Fe K Mg Mn Na Ni P Pb Si Zn Mo Sr Ba Sample 1 Sample 2 .0234 .0568 .0225 .0062 .0209 .0027 .0029 .0021 .0019 .0032 .0033 .0023 .0374 .0171 .0901 .0109 .0151 .0138 .0056 .0000 .0087 .0004 .0032 .0019 .1881 .0471 .0441 .0294 .0585 .7424 .3820 .0448 .0038 .0000 .0073 .2946 .1956 .0152 .0116 .0070 .0261 .1197 .4533 .0000 .6441 .0012 .0097 .0213 Elemental compositions were determined with an ICAP (inductively coupled argon plasma) spectrophotometer, using dilutions of atomic absorption stocks for standards. several centimetres thick (Fig. 8), it supports a dense growth of salt tolerant Salicornia. Analyses of the evaporate revealed, not unexpectedly, a high concentration of calcium, magnesium, sodium and potassium; the concentrations of these and other elements in samples from two sites are summarised in Table 1. The high levels of these elements may be directly related to intense photosynthesis occurring in the lake (Goldman & Home, 1983), the geological composition of its watershed and the absence of an outlet which will cause the lake to accumulate ions even if it is not contracting. Water clarity was low during August (see Secchi Disc readings given below p. 187). This is due to a massive algal and zooplankton bloom (autochthonous production). No macrophytes were ob
Size: 2124px × 1176px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollection, bookpublisherlondonbutterworths
