Hydro-ecological relations in the Delta Waters

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Implementafion of the Delta Project has inLtiated a process of large scale changes in the tidal landscape. Generally these changos may be described in relation to the specific changes in tidal valme of the basins. The dimensions and rate of th. changes only partly have been foreseen the outset qf the Project. DetaiIed process studies over the last years have p~wvided =ore insight. &B a result of these studies adequate mam~ewatt wssures have been defined to stop erosion gf shoals and mudflats in the tideless baeins. A po1l.o~ plan incwrporating the developarents of tk ebb tldd deltas - the Voordelta - is fa preparation, The definitfon 0f adequate measuremeats to mwge developments of the tidal landscape fa the 0ooster- and Westers&d.de ie subject of study. L am grateful ta L.R.M. Kohsiek Por his nseful advise in preparing thls paper, to J.W.M. Kuijpers (Rilfkswaterataat, Directorate Euid-Holland) and D. wan Malde~em for pravidimg data, and to J. Polderman and 3. van den Broeke for sonstructian of the figures. REFERENCES BBRG, J.R. VAN DEN. BEW, J.R. 1986. Aspects of sedi6Pent- and lnorphodynamics of subtidal deposits of the Ooatezsehelde (the Eletherlds). &VS Co~ca~iolll m 43, Den Has. VAB1 BEE. 1987. &@anation of the isallobaths map of the Voordelta L975 - 1980 (in Dutch). Rota ZL 87.0020, EM Dir. Eld, 49 p. DMS, 1930. Prelude (in Dutch). Drie Hnd. Ber. Deltmr., 54: 17'2 - 177. DMB, 1975. Hydrographical research into the impact of the storm surge barrier on environmant (in Dutch). Drie Mnd. Bet. Deltaw.. 72: @4 - 92.
DMB. 1976. Hydraulic arui hydrog~aphical alpact on the Oosterschelde basin (in Dutch). DrieMnd. Ber. Deltaw., 763 312 - 324. PORTUIN. A. d . 1989. The development and protection of shores in former tidal hasins (in Dutch). Nota RWS Dienst Getijdewateren. KOBSIEK, L.B.M.. PIDLDER. J.P.M., LOUTERS, T. and BERBEN, F., 1987. The Ooeterschelde; twrds a new tidal landscape (in Dutch). Nota WgO 87.029. RW8 Dienst Ggtijdewateren, 48 p. KOItSIEI(, L.H.M. and MULDER, J.P.M. (ed5. ), L989. me VoVaoelelta, a water system is changing (in Dutch). Nota m Dienst Gecijdewareren. 24 p. LEE-, K.A.H.W.. 1986. 2000 years of coastal development from Cap Cris Re2 to Book of Holland (in Dutch). Nota NZ-N-88.19 BUS Dir. Noardzee. 4S p. LEEUWESTEIN, W. and P. ECBOOT, 1988. hraluation shores; report m the project Shore erosion (in Durck). Rep. 73 Delft, Vakgr. Wtkk,. 90 p. OTTEBLOO, R.B. VAN, BEEGAEM, J.W. VAN, KlJIJPER3, J.W.M., BROMUIZEN. A., DREUMEL, B.F. VAN and MOL, J.W., 1987. The water soil of the Nortkm Dalelta Basin (in Dutch). Nuta RWS Dir. bendenriv., 29 p. Spa, A.J.F. VAN DER. 1987. Deectiption of the development of the ebb tidal deltas of the Xaringvliet and Crevelingen (in Dutch). Nota GWAO 87.105 RWS Dienst Getijdewateren, 77 p. VECBOEL, R.H.W. VAN, 1977. ffirphalagical development in the Oosterschelde (in Dutch). Nota W-77.009 RWS Deltadienst, 12 p. W, 1989. Policy plan Wasterschelde (in Dutch). Werkgr. Waterbeh. W.Sch=l$e, RWS Dienst OetiJdewaterenIDir. Zeelanri, 4 reports. 2 , W . . 1997. Geolmgy of the Netherlands I : The Netherlands during the Halocene (in Dutch). Staatsuit$everij Oen Raag.
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Netherlands organkation fw applied
Page 4 and 5:
TNO Commlitee on Hydrological Resea
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2 RIVER WATER AM) THE QPALITH OF TB
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B.J.M. Baptist BIJkswaterstaat. Tid
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This approach will put to use what
Page 13 and 14:
Estuaries that have not been influe
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2 CHIWGES XN TEE DELTA The Delta ar
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area decltned cnnside~ably, leadins
Page 19 and 20:
Plan, then it is apparent tbt the s
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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
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prevention measures are desirable h
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elationships between different spec
Page 31 and 32:
Bio-essay Weriments with polluted s
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considerable thought to drawing up
Page 35 and 36:
ShLOUONS, W. and BYSINK, W.D., 1981
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are taken. The first year after the
Page 39 and 40:
The Hollands DiepJnaringpllet is pa
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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$3 in an increase of
Page 68 and 69: model calculations reveal that a ni
Page 70 and 71: Table 3 PreUmInary carbon budget of
Page 72 and 73: Water life of Lake Grevelingen
Page 74 and 75: macrophytes livkg on or rooting in
Page 76 and 77: less predictable for water managers
Page 78 and 79: ILWNEWIJK, A.. KEIP, C., 1988. De v
Page 80 and 81: XBE CHANGING TmAL LAMXiCAPE I N TEE
Page 82 and 83: The storm surke of L&Z1 A.D., knorm
Page 84 and 85: osi* rn@8IOIP m .SL 4 Has F~~ULB 3
Page 86 and 87: During the 19th century man starts
Page 88 and 89: mudflats have retreated some 100-20
Page 90 and 91: aq811~33a.e~ pue 3pTatlJS uxaJsafi
Page 92 and 93: Erosion by waves of sandy shoals (c
Page 94 and 95: Lt has been estimated that the sedi
Page 98 and 99: ECOLOGICAL DEVELOWdENT OF SALT MAKS
Page 100 and 101: fn tidal water systems sedimentatio
Page 102 and 103: hierarchical position. Tn the egtua
Page 104 and 105: Of course. tke environmental change
Page 106 and 107: wind erasson, desaliuation, aeratio
Page 108 and 109: Fonner tirtal flats with saltmarsh
Page 110 and 111: Grevelingen. Lake Veere and Krammer
Page 112 and 113: As mentioned above aa important que
Page 114 and 115: A seaond important perspective for
Page 116: BEEEXNX, W.D. and 80ZBf&. J. L9M. T
Page 119 and 120: are determining the dfstrlbution af
Page 121 and 122: this volume or in Duutsaa, et aL, 1
Page 123 and 124: artificial waterflow was created af
Page 125 and 126: of waterbirds occur regulsrly. The
Page 127 and 128: . DISTRIBUXIOBI OF WATEJBIRoS OVER
Page 129 and 130: small bird$ extludiag them vill net
Page 131 and 132: In order to lsok for relatiouehips
Page 133 and 134: Table 3 Biomass of macroroobenthos
Page 135 and 136: freshwater basins. Clearly the pres
Page 137 and 138: scmthem bottueary o-f the winter di
Page 139 and 140: OCLURRENCE AND DIET QF B ~T .tUQ 80
Page 141 and 142: 5.2 H- factors Next to all fartors
Page 143 and 144: Bewick's Swans (Cygnus columbariusl
Page 145 and 146: m's activiries do not always have t
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measure affecting food supply or av
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DOQiWT$QS, G. 4 TWISK, F., 1987. De
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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
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Ro. 1. No. 2. SQ. 3. Investigations
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25. The relation between water quan
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Hydro-ecological relations in the Delta Waters

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