Hydro-ecological relations in the Delta Waters

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less predictable for water managers; the Veerse Meex is an eraple of phase 11. Relative dorninonce l SALT WATER I / I n I II m EutPophlccltion phase Figure 8 Tentative model for the relation between primary producers and nutriats and the snccessive stages in the eutmphication proce6s. Explanation see text. In hypereutrophicated systems (phase 111) heavy uncontrolled phytoplilnkton blooms alternate with mass growth of macro-algae. Nutrient concentrations are continuously high. Rooting waterplants hwe completely disappeared. Bottom sediments suffer from permanent anoxia. The lagoon of Venice is an example of phase 111, where E bimass -2 reaches values of 1.5 kg dry weight m (Sfriso, et al. 1987; Sfriso, et al. 1988) which is 6 times higher as in the Veerse Meer.
BEumMA. 3.3, aad CADEE, 0.6.. 1986. Zoobentboa respauses to eutrophication of the Dutch Waddea Sea. Ophelia, Z6: 5544. B-, 3.3. and GADEE, G.C., 1987. De eutrofi8rlng ven ons kwtwater: genoeg of a1 te -ell Vakbl. Biol.. 67 (9): 153-157. BILLEM, G. and LAhTOELOT, C., 1987. Modelling bemhic microbial processes and rheir role in nitrogen cycling of taperate coastal ecosystems. In: E.T. Blackburn and 3. Sorensen (editors) - Nitrogen in coastal marine envirommnts. Scope Wiley, New York, pp. 341-378. EiILtEW, G.. Z~CELM C., SEGgER. E. DE and SWAIS, P., 1988. Modelling microbial processes Lphyto- and baccerioplanktm) in rhe Sckldr estukty. Kydrobbol. BnIl.. 22 it): 43-55. BOWBsT, E.. 1988. Iavwtarisatie van een aantal ahiotisehe facforen in de Wosterschelde. DUlO Studentenverslag 06-1988: 1-22. BROCWANE. U., BIZLEN. G., md GIESKEEIS, W.W.C., 1988. In: W. Momns, S.L. Bayne, E.K. Wursma and W. FGrstner (ebicors) - Eollution of the North Sea - an asaesement. Sprinser, Berlin, pp. 348-389. BUWEEN, J.T. VAN, 1988. De Noordzee en eutrafiiiriug. B 0. 21 (201 : 9 591-595. CbDFE, G.C.. 1986a. Increased phytoplmkton primary production in the Maradi+p area (western Dutch Wden Sea). Neth. J. Sea Eos., 20: 285-9961. CWDEE, @.G., UUIEE, G.C.. 19a6b. Recurrent and changing seasonal patterm in phytoplankton of the westemmost inlet of the Dutch Wadden &a frw 1969 to 1985. %X. siol., 93: ~81-289. and IIEbEm4N. S.. 1986. Seirggnal and annual v-ariahi~n in Phaeocystis pouehetii (Haptophyeoae) in tire westemmest inlet of the Uadden Sea during €he 1973 to 1985 pertod. Flech. 3. Sea W., 20: 29-36. RMNEN, E.A.M.J., 1985. Literatuurondarzoek met bet$ekking tot de oocologie van her Veerse Meer. B.V. 1-116. G R O ~ I J K , A.M., Delta COnsult, Kapele, pp. 1984. Primary podnction of four dominant salt-.marsh augiespstraa in the South-West Netherlands, Ve~~tatie, 51: 143-152.
Page 1 and 2:
Netherlands organkation fw applied
Page 4 and 5:
TNO Commlitee on Hydrological Resea
Page 6 and 7:
2 RIVER WATER AM) THE QPALITH OF TB
Page 8:
B.J.M. Baptist BIJkswaterstaat. Tid
Page 11 and 12:
This approach will put to use what
Page 13 and 14:
Estuaries that have not been influe
Page 15 and 16:
2 CHIWGES XN TEE DELTA The Delta ar
Page 17 and 18:
area decltned cnnside~ably, leadins
Page 19 and 20:
Plan, then it is apparent tbt the s
Page 21 and 22:
Tiddl flats df the Eastem Seheldt v
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tracefore possible to convert the a
Page 25 and 26: Figsrlre 7 Changes in the cadrnrum
Page 27 and 28: prevention measures are desirable h
Page 29 and 30: elationships between different spec
Page 31 and 32: Bio-essay Weriments with polluted s
Page 33 and 34: considerable thought to drawing up
Page 35 and 36: ShLOUONS, W. and BYSINK, W.D., 1981
Page 37 and 38: are taken. The first year after the
Page 39 and 40: The Hollands DiepJnaringpllet is pa
Page 41 and 42: In 1976 the determination of chlozo
Page 43 and 44: , 0.66 m 0,s - 0.02 1989 I 0.86 - 0
Page 45 and 46: Table 3 Eutrophication of the Volke
Page 47 and 48: Laks Volkarek ---- Lake Zoom 0.40 0
Page 49 and 50: 4 WAGBEET MEdSIIRaS TO PEEVBT OR LT
Page 51 and 52: Table 5 gives estimtes of the phosp
Page 53 and 54: In principle, two states of equilib
Page 55 and 56: Zooplankton (Alma affinis) Pike (Es
Page 58 and 59: EUTROPHICATION OF ESTUAAIES AND BRA
Page 60 and 61: The average discharge of Xhine and
Page 62 and 63: and only l-2% cows frm the aive Sch
Page 64 and 65: highest trophic potential: nutrient
Page 66 and 67: period 1980-19$3 in an increase of
Page 68 and 69: model calculations reveal that a ni
Page 70 and 71: Table 3 PreUmInary carbon budget of
Page 72 and 73: Water life of Lake Grevelingen
Page 74 and 75: macrophytes livkg on or rooting in
Page 78 and 79: ILWNEWIJK, A.. KEIP, C., 1988. De v
Page 80 and 81: XBE CHANGING TmAL LAMXiCAPE I N TEE
Page 82 and 83: The storm surke of L&Z1 A.D., knorm
Page 84 and 85: osi* rn@8IOIP m .SL 4 Has F~~ULB 3
Page 86 and 87: During the 19th century man starts
Page 88 and 89: mudflats have retreated some 100-20
Page 90 and 91: aq811~33a.e~ pue 3pTatlJS uxaJsafi
Page 92 and 93: Erosion by waves of sandy shoals (c
Page 94 and 95: Lt has been estimated that the sedi
Page 96 and 97: Implementafion of the Delta Project
Page 98 and 99: ECOLOGICAL DEVELOWdENT OF SALT MAKS
Page 100 and 101: fn tidal water systems sedimentatio
Page 102 and 103: hierarchical position. Tn the egtua
Page 104 and 105: Of course. tke environmental change
Page 106 and 107: wind erasson, desaliuation, aeratio
Page 108 and 109: Fonner tirtal flats with saltmarsh
Page 110 and 111: Grevelingen. Lake Veere and Krammer
Page 112 and 113: As mentioned above aa important que
Page 114 and 115: A seaond important perspective for
Page 116: BEEEXNX, W.D. and 80ZBf&. J. L9M. T
Page 119 and 120: are determining the dfstrlbution af
Page 121 and 122: this volume or in Duutsaa, et aL, 1
Page 123 and 124: artificial waterflow was created af
Page 125 and 126: of waterbirds occur regulsrly. The
Page 127 and 128:
. DISTRIBUXIOBI OF WATEJBIRoS OVER
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small bird$ extludiag them vill net
Page 131 and 132:
In order to lsok for relatiouehips
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Table 3 Biomass of macroroobenthos
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freshwater basins. Clearly the pres
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scmthem bottueary o-f the winter di
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OCLURRENCE AND DIET QF B ~T .tUQ 80
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5.2 H- factors Next to all fartors
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Bewick's Swans (Cygnus columbariusl
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m's activiries do not always have t
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measure affecting food supply or av
Page 149 and 150:
DOQiWT$QS, G. 4 TWISK, F., 1987. De
Page 151 and 152:
MEININGEB, P.L. and HAPEREX, A.M.M.
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PISCIVORES Litfle Grebe Great Crest
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IPYBRO-EGOLOOIOAL BELATIONB ZN THE
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apart from upstream purification; -
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Storm surge barrier Eastern Scheldt
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- In addition to existing managemen
Page 164 and 165:
Nature is pliable. Belattvely young
Page 166 and 167:
Ro. 1. No. 2. SQ. 3. Investigations
Page 168 and 169:
25. The relation between water quan
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Hydro-ecological relations in the Delta Waters

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