lSSN O912−7410

No．3 MARCH1987．ヽ †J叶．ヽ／ノJ′て †J††
〃VTg尺∧uTJO∧J」んんA〟g g∧Jり尺0〃〃g∧rr CO〟丑ⅣrrEg
一声orβe飴rL∂〟e〃a〃a9eJne／lf￣
Thi＄NewsIetleris aIso ava‖abIeinJapanese．

THE F］RST ANNIVERSARY OF［LECnon−】profitpublicinterestcorporationtoservethepublic
interestasapprovedbyJapaneseCivilLaw．TheShiga
The Second General Meeting of lLEC
PrefecturaIGovernmenthadguaranteedtoprovide200m‖ion yen．the minimum required as an endowment
The Second GeneralMeeting oflLEC was held atfunds，tO
PermitlLEC recognition as ajuridicaIperson
Lake Biwa Research Lnstititutein Ot＄U On February
underJapanese
CivilLaw．
18−20，1987．The prlmarykeynoteaddress，duringthe

OPenlng−Wa＄deliveredbyProf．T．Kira，Chairpersonof2）cooperation to WorId Lake Conferences
lLEC，fo owed by addressesfrom Hon．Minorulnaba．
Prof．）．Salanki，Dr．E．Szenes and Dr．S．Herodek
GovernorofShiga Prefecture，Dr，Hidehiko Sazanami，
reaffirmed theintention ofthe Hungarian NationalAu−
DirectorofUnitedNationsCentrefoTRegionalDevelop−
thority for EnvironmentalProtec！ion and the Nationalment（UNCRD），MessagesfrornHon．Toshiyukilnamura，Academy of Sciences to host the Third World Lake
MinisterofEnvironmentAgency，Dr，M．K．Tolba，Execu−
Conference− Ba曇aton 88−in Hungaryin September
tiveDirectorofUnited NationsEnvironmentProgramme（UNEP）andMr．N．Nakahira，Director−Genera‡ofUnited 1988，OUtlined proposed topJCS andinvited further
SUggeStionsfTOmlLECMember斗ILEC sroleinrelation
Nations Bureau，Ministry of Foreign Affairs，Were aIso
to future WorId Lake Conference＄WaS discussed．The
read．Receivlng PrOPOSaIs frorTIMembers and a pro−
gress report from the Secretariat during the first day intentionoftheNationa＝；nvironmentProtectionAgency
OfChinaandtheChineseResearchAcademyofEnviron−
SeSSion，WOrkpartymeetingsondataco ection，training
mentaISciencesto hostthe Fou11hWorld Lake Confer−and guidetines were held atthe Biwako HoteIon theencein Hangzhou，China，in1990was announced．
SeCOndday，tOeXP10rethefeasibiIityoftheproposaIs．At
theplenarysession
OntheIastday−af−
ter the report fromeach work−Party，PrO」e（）tS for fi＄Ca1

1987were discuss−
ed．fol10Wed byapprovaIofproJeCt
P［ans and budget
for fisca11987．
Among the maJOr
themes of plenary
5eSS10nS Were：
1）JuridicalChar−ヤ ．Y d：ニ》

a（⊃ter Of ＝＿EC

The proposal
WaS aPPrOVed：thatlLEC take thenecessa「y steps to．
become ajuridi￠at ゝ
foundation as aP√OlT K什a，C†ほ′lpO′80JIOJJL亡C，de／fyers openJ叩addres8．

ning，Shiga Prefecture）
Mr．KenjiFurukawa（Director，Departmentof Civif Lifeand Environment．Shiga Prefecture）
MrLSeiichiKawase（Vice−Director，DepartmentofCivil
Life and Environment，Shiga Prefecture）

LIST OF PARTICIPANTS

REGULAR MEMBERS
Prof．TakeshiGoda（JAPAN）
Prof．Sven E．Jorgensen（DENMARK）
Prof．Tatuo Kira（JAPAN）
Prof．Liu Hongliang（CHLNA）
WORK−PARTY ON DATA COLLECT10N
Dr．Kenneth M．Mavuti（KENYA）
7）The progress ofthe editorialwork on the Data
Prof．Jurgen Overbeck（WEST GERMANY）
Prof．J畠nos Salanki（HUNGARY）
Book of World Lake Environments was reported．1tis
Prof．Jo＄色G．Tundi＄i（BRAZIL）
anticIPatedthatthenumberoflakescoveredbythenew
Prof．Richard A．Vollenweider（CANADA）
edition wi increasefrom52inthe old edition（1984）toProf．Gilbert F．White（U．S．A）
approximately80．ThefirstpartoftheneweditionwiJlbe
Prof．T．N．Khoshoo（lNDIA，PrOXyOfProf．M．G．K．Menon）
Printedjnasimplef＝ngformduringthenextfiscal・year（1987）．
SECRETARY−GENERAL
Dr．Michio Hashimoto（Japan）
2）A new proposalwas made toinitiate a project
OBSERVERS
Dr．Ervin Szenes（HUNGARY）
Dr．Sandor Herodek（Balaton LimnologicalResearchlnstitute，HUNGARY）
Dr．ZhangJiqiang（Chinese Research Academy ofEnvironmentalSciences）
Mr．Hisao Sakimura（UNEP）
Dr，Hidehiko Sazanami（UNCRD）
Mr．HiromichiSakamoto（Environment Agency）
Mr．AkiraKido（NationaILand Agency）
Mr，KojiTsuii（Ministry of Health and Welfare）
Mr．ToshimichiOkamoto（Ministry of Agriculture■，For−
estry and Fisheries）
Mr．SukioOkamoto（MinistryoflnternationaITradeanddffferent from the abovePrOJeCt．1tintends to co ect
rTuChsimpler盲etsofba＄icinformation（mostlyqualita−tive）from asmanylakesoftheword as possibIe．The
PrOPOSalwasagreedonandthekindsofinformationto
be co ected and the method of collect手on were dis−
CuSSed．ThisnewproJeCtWi11startimmediate‡y，Whilethe
Data Book proJeCt Wi be conthued as previousJy
Planned．
3）on reque＄tfrom UNEP．someinTdepthstudyon
environmentaltrend＄ and expected management
SChemesinaIimitednumberoflakesandasynthesisof
theg10baltrend＄Oflakeenvironmentwi alsobecarriedOutin1987，based on the results of the above two
PrOJeCtS．

lndust「y）

Dr．Ma＄ahisa NakamLJra（Lake Biwa Researchlnstitute）
Hon．MinoruInaba（Governor，Shiga Prefecture）
Mr．MasayoshiFuchida（Director，DeparEment of Plan−

WORK−PARTY ON TRAINING
ObectivesandtargetgrouplneaChcour＄eShouIdbe

New Regular Member to lLEC
Nature Con−lnviewofthetransferofDr．FerencMat色，Senior
ScientistofBalatonLimno10gicalResearchInstitute＄8rVation as
OftheHungarianAcademyofSciences，intoanother
Chairman of theimporant sphere of activity，Professor Dr．）色nos
Organizing Com‑
SalankihasbeenappointedaRegularlLEC Mem−mittee for the
ber for the reminder of Dr．Matels term．
■ Th手rd Confer−
Prof・J・Salanki，bornin1929，isaCorresponding
ence on Con−
SerVation andMember of the Hungarian Academy of Sciences，Management of
DirectorattheBalatonLimno10glCalResearchhsti−
World Lake En−
tutedndVice−PreSidentofthelntemationa＝Jnionof
Vironment−Bala−
Bio10gicalSciences（lUBS）．He also serves as
ton 88．Hi＄main
Organizerofseveralintemationarsymposia，andisa
reSearch interest
memberoftheOrganizingCommitteesofnumerous
is comparative
inteTnationalcongresses，and has been nominatedneurobioIogy andby the Hungarian Academy of Sciences and the
Nationa［Authority for Environment Protection and

さ′／f

Proたノ白no8 S8伯nkf
environmentalbiology．

glVen：aSWe ，reqUiredbackgroundofparticipantsmust
be specified．Evaluation of each cour＄eis ＄trOngly

recommended．toimprovecoursesconcurrentlyonthe
basis of gained experience．
1n accordance with Dr，Sazanami s proposalin his
COngratUFatory address，Seminar−Cum−WOrkshop underthejointsponsershipofUNCRD／lLEC／UNEP占houIdbe
held，bringingtogethertheenvironmentalanddeveIop−

The evaluation should be usedforconcurrentmodifica−tion of the course．

WORK− PARTY ON GUIDELINES

lti＄agreedtowritetheguidelinesforadviserstothedecision makers・but said guide（ines should be preてParedin such awaythatthe decjsion makers and thement ＄ides − Senior administrator＄ and schoIars −adviser s assi＄tant＄Can understand the entire content．
PreferablybyusIngCaSeStudiesasabasis，forinstance
1tis of greatimportance that the guidelines focus
directlyandentireIyonmanagementaspects．ScientificZambeziriverbasirl，Lake Laguna and／or Lake Song−khla．Besides，tentaive plans forthe realization ofthe explanatjons or aspects wiIIbe omitted．but a rather
COmPrehensive bibIiography wi［lbeincIuded．
generalmana9？mentCOurSeWerePrOPOSed・The guideIine books，althoughc10Sely refatedtothe
The fol（owlnglS an eXamP［e of proposed generaltrainlng COUrSeS，Wi be editedin suchawayasto be
COUrSeinlake andlake basin management．
usefuIreading also fortho＄e nOt attending the corre−
SPOnding trainlng COUrSeS，aS the content c由n be
COnSidered a direct working tool．
1）Objective＄：Ageneralcourse，WhichshouIdfocus
1t、isfurthermoreproposedthataseriesofbookletsbe
Ona stePsfrom understandingoftheecosystem，data
WIritten whichwi permitmore rapid publication ofthe
CO ection，maSS ba‡anceand／ormode暮s，SOCial−Cultural
aspects，reg10naldeve10Pment aSPeCtS，management guidelines．Theguidelinebooklets，inwhichwatersheddecision＄，eValuations，eCOnOmy．Thedeve10Pmentand
managementviewsshould bestronglyemphasized，WienvironmentalaspectsshouIdbebroughttogetherinthe
be either generaIor specialized，￠0Ur＄e．
The fol（owlng bookJets are foreseen：2）TargetgroLJP：Senioradministratorsandscholars．
1）principles of Lake Management
2）social−eCOnOmic−CulturaIaspects of LakeMan−
3）Required background knowledge：Experiencein
environmentaImanagementproblemsof）akesar［dlake
agement
basins，eitherfrom an adrTlinistrative or naturaIscience 3）Fish productionin rakes and reservoirs
Viewpoint．
4）Eutrophication oflak甲and reservoirs
4）Duration：3−4Weeks
5）A￠idification oflakes and reseⅣOirs
5）Topics：6）Toxic substancesinlakes and reservoir＄（1）The use oflakes and reservoirs．Basic know−
7）Management of reseⅣOirs
ledge of ecosystem structure and function8）Lakes，re＄erVOirs and erosion（2）Lakes and reservpirs as ecosystems．
9）lntegrated basin management（3）Date aboutlakes and reservoir＄（incl．readily
availabIe data）．
（4）Data￠Olle（〕tion（5）Qualitativeandquantitativeassessmentoflake
PrOblems．Watershed viewpoint．
（6）problemsoflake＄，reSerVOirsandtheirwater−

Tentative schedule：

VoE・10n PrincIPles of Lake Management：
May，draft＄Sent tO editors，the editors to edit thebook（etduringtheperiodMay−November87．Printing．
Dec・87−March／Aprif88．

Sheds．

（7）Ecologicalengineering methods applied toVot．2Social−eCOnOmic−CUlturalAspects of Lake Man−
lakes and reservoirs（watertreatment，reaera−
agement：
ThevoIumewillbelaunchedatthecoming UNCRD／
tion，Change of hydrology，Sediment remova（，
biomanlPulation，reg10nalplannlng，agrlCUlture
lLEC／UNEP course．Potentialau■thors areinvited．
mana！】ement etC．）
OutIines，aUthorship etc．wi be decided on that
（8）use of mass balances and models（alsoin
OCCaSion．PLJbIication ofVof．2tofollow afew months
data−POOr Situations）（9）E的nomyoflake management㈹ soil−CUlturalaspect＄Oflake management（11）Howto make the rightdecisions㈹ Action plans

O3）Evaluation ofthedecision（14）Managementin a politicaIcontext

Topicsl−6 can be covered by a broad mindedecologist（limno10gist）．Topic去7−8canbecoveredbyan
eco10gicalengineer（amode‖er），Topic＄9−14requirean
economist and／or a manager，The guideline bookIets
Vol．1and VoI．2would provide asuitable（Partly）basis
6）Evaluation：Duringand6monthsafterthecourse．

after Vot．1．

Vol．30n Fishery：

Authors to be decided on at alater meeting（nextGeneralMeetingin1988）．
Distribution and possible saJeareto bedecided bytheboardoflLECatalaterstage．1tisemphasizedthat
lLEC should be more widely known through scientificJOurr［als，neWSletters and other means．Thisis consid−
ered of greatimportance forthe di＄tribution of rLEC s
forLhcomlng PUblications．

THE 3RD MEETlNG OF WORKlNG GROUP OF
EXPERTS ON THE ZAMBEZl RlVER SYSTEM
lnresponsetotheinvitationofUNEP，Dr．M．Hashimo−
to，Secretary Genera10flLEC，Participatedinthe3rd

Meeting ofWorking Group of Expertson the Zambezi
RiverSystem，heldatGaborone，RepublicofBotswana
frorT120−23Janu？ry，1987・Re．atedtotheimplementation
OfZambeziAction Plan，Dr．Hashimoto expressed thefollowlng Standpoint oflLEC．

As a non−gOVernmenta10rganization，lLEC can conT
tribute to the environmenta y sound management oflakesintheZambeziRiverSystem（incIudingswamps）

through three on‑going programmes under the advice
and direction of the UNEP：（Pり Training and expertseminarcourses

Mee伽9aISu〃〃oreJ，G8boro〃e（ii）Lakeenvironmentdatasystemthrough Surv？yOf
the State of Worfd Lakes ■programme．and（iii）series ofguidelines forenvironmenta‖y soundlake management．

agencie＄，indeve10Plngand［aunchinganActionPlanfor

theEnvironmentalManagementoftheCommonZambe−

ZiRiver System（ZACPLAN）as a first stepinits

COmPerehensive EMINWA prograrTlme．
TheframeworkofZACPLANhasalsobeenincIudedin

theCairoPrograrTlmeforAfricanCooperation，adopted
by the first African MinisterialConference on the En−
vjronment，Whichmetatcairoin December，1985，Jn

Iightofthe EMINWA programme，aWorkjng Groupof
ExpertsontheZambeziRiverSystemwasestablishedin
1985．

Main agenda and discussion
FinalizationoftheDraftAgreementintheActionPlan
for the Environmental Management of the Common
ZambeziRiverSystem：TheWorking Group agreedto
the struture of the proposed ZACPLAN draft andamended some paragraphs afterdetaiIed discussjons．
Zambez′月ルerβa5′〃Focusl）contribution of a Par（icipating Countriesto theZambeziRiverBasinTrustFund：Totalcontribution

Background
UNEP haslaunched a comprehensive new pro−grammeonthe Environmenta！lySound Mana白ementof
lnland Waters（EMINWA）to assist Governmentsin the
integrationofenvironmentalconcernsintothemanage−
ment of water resources．

be equally shared by a participating countrie＄，
2）TheZambeziActionP■anprojectsfortheperiodof
1987−1g89：Jt was agreed that the suggested
ZACPROprojectsgroupedintoprJOrities−Iand−

I［shouldbegroupedundercategoriesIandI
and that the review of the projects proposed forZACPRO＄houIdbediscussedatthefirstmeeting
OftheZambezilnter−gOVernmentalMorIitorIngand

Oneofthe main＄Ub−PrOgrammeSOfEMINWAisthe
AfricanlnIand Water Programme（AIWP）．which gives
high prior書ty to water management and reducing theCoordinating Committee（ZIMCC）．
effectofdroughtsinAfrica．Fo owlngrequeStSfromthe
Governments ofthe Zambeziriver basin cTimetable for 1987
deve10P regionaIcooperatipn andtopromotesustainT1）BymidMaTCh，1987：ApprovaIoftheDraftAgree−
abIe deve10Pment．it has been decided that the first
mentofZACPLANinthe Participating Countries．
elementoftheimplementationofthisprogrammeshould
2）Late ApriI，1987：lnter−gOVernmentaIMeetingin
COnCentrate On the common Zambeziriver＄yStemS．
Harare，Zimbabwe．
Whichencompassestheterritorie＄OffoIlowlngCOntries
3）June，1987：Taking note ofthe・PrOgreSS Oftheand constitute＄：Angola，Botswana，Malawi，Mozam− ActionPlanandapprovaIoftheTrustFundat14thbique，Namibia，Tanzania，Zambia and Zimbabwe．
Session of UNEP s Governing Council．
Thus，UNEP has as＄isted the Governments of the4）ottoberTNovember1987：First meeting of theZambeziriverbasincountries，incooperationwithother
ZanbezilntergovernmentalMonitorlngand Coor−
Organizations ofthe Un‡ted Nations system and donor
dinat妻ng Committee（ZIMCC）．
4

Mr．Sakimura，FormerFarEastManagerofanAmer−ican environmentaJconsulting firm，JOined UNEP as
DeputyDirectorofEnvironmenIalManagementService
PROF．G．E．HUTCHINSON

KYOTO PRIZE GOES TO

earlyln1979．1nApril

Prof．GeorgeEvelynHutchinsonofYaleUniversitywas

1986，aCCOrding toawardedthe2nd Kyoto Prize ，tOgetherwithProfessor
Nico始 M．LeDouarin of thelnstitute d EmbryoJogle，No9ent−Sur−Mame，and Dr．1samu Noguchi．Each re−the organizationaFchange of the Office
Of the Environmental

Ceived the Kyoto Prize medaland 45 mil（ion yen

ProgrammeofUNEP，（＄300，000）ataceremonyheldinJapan on November

hewas appointed a＄llth，1986．

Chief of Supporting

Thepnze，OneOfsciencesnewestandbiggestpnzes，Measures Branch．

WaS eStablishedin1985by Kazuolnamori，founderof

Mr．Sakimurais mar−

KyoceraCorporation．Japan s mostfamous andfastest
growlnghigh−teChnologyceramicscompany．Theaimof
thepTIZeisto由1COUragebalancebetweenscientificand

ried，With two chil−technological development on the one hand and
PSyChologicaland emotionalmaturity on the other．
Prof．Hutchinson，known both as an e＄Sayi＄t and a
SCientist，did much to estabIish ecoIogyas a science，

throughthefield oflimno10gy，andwasfirsttodeve10P
theconceptoftheeco10gicaIniche．BorninEnglandin

九九 〃／8∂O S∂k／muradren．

ACTFVmES OF LABORATORIES
OF LlMNOLOGY IN

HYDROELECTRIC COMPANJES，lN BRAZIL，PARTICULARLY

1903．Prof，Hutc inson，nOWanemeritusprofessor，isstill
IN THE AMAZON REG10N．
Writing and researching．Publications：A Treatise on
Theconsolidation ofmanagementtechniquesin res−
Limno10gy（1957），HomagetoSantaRosa‖a（1959）．The
ervoirsis possible only when a basicinformation on
EcologicalTheaterandtheEvoILJtionaryPIay（1965），An
limno10glCalmechanisms and processesis provided．
lntroduction to Population Eco10gy（1978）etc．
With this background．the Hydroelectric companiesin
BraziIare expa■nding actjvitiesinlimnology．ReservoiTS

UNEP Advisor toILEC

intheAmazonregIOnPreSentaSeriesofneweco10glCal
PrOblemsandmanymanagementperspectives，Forthis

Mr・Hi＄aO SakirTILJra，Chief of SupporEing Mea＄UreS
reason・thelimnoIog■Calbasisintheseartificialecosys−
Branch．UNEP，WaSinsta ed asAdvisortoILEC on15 tem＄in this reg−Onis even more necessary・Manage−
November，1986．RespondingtotherequestfrbmGov− mentproblemsofthesereservoirsareenormous，dueto
ernor of Shiga Prefecture，Which was solely financing greatinundatedforestarea．re［ocationofpopulationand
lLEC．throughtheMinistryofForeignAfFairsofJapanesemaintenace ofwat8r quality downstream・The hydro−
electriccompaniesoperatjngintheAmazonRegion．are
GovernmentforthedespatchofMr．Sakimuratoassist
activelyengagedinlimno10glCalresearchasatoolfor
lLECforitssmoothandrapiddeve10Pment，Dr．Mo＄tafa
K．Tolba，Executive Director of UNEP．favourabIymanagement．
Withthatobjective，ELETROWORTE，theAmazonOp−
arranged Mr・Sakimura s mission toJapan forapprox−
imately a、year・Though ayearass■gnment SeemS nOt
eratingCompanyTha＄eStablishedaLaboratoryoflim−
to be sufficienttime，it must be understood that UNEP no10gyatTucuruiReservoir，WherelOlimnoIogistsare
WOrkingwithmanagersofthereservoirtofindadequate
WOuldnotbeabJetoaffordtokeepsuchaseniorpostas
SOrutions・Thescientificsupportforthedeve10PmentOf
ChiefofSupportingMeasures Branchvacantfora10ng
time．

thisactivityisgivenbytheUniversityofS．Pau10inc10Se

Mr．Sakimura，inhiscapacityasAdvisortoILEC，Wi CO＝aboration with the HydroeIectric Companies．This
WOrkforcoordination among FLEC，Japanese Govern−
initiativeopenedanewseriesofoperationaIsystemsof
mentand UNEPaswe asotherUN organizations．He reservoirsinBrazilandparticularlyintheAmazonreg10n
WilralsoassistthelLECSecretariatforeffectiveimple−
PrOViding asolid groundfoTmanagement relatedwith
mentationoftheproposedjointproJeCtSWithUNEPand
multipleusesWithanenvironmentalperspective，incIud−
UNCRD．

1ng human and socialaspects．

J．G．Tundisi

5LAKESOF THE WORLDL＾KES．LAGOONS AND RESERVOIRS bF THE ARGENTINE REPUBLIC（CEB）

ThecontinentalterritoryoftheArgentheRepubIichas
morethan one thousandlakes andIagoonsinitstotal

activities are partIy regulated．Urban deveIopmenthas
destroyedlake−Shore forests，mOdified s10PeS due toroad construction and spoiled water quality，Thisis
area of aImost three miIlion square kilometer8・They
e＄PeCial（ymarkednearBaliliche，Wherethenecessityis
differnotonlyin depth，Whichis greaterinlakes andallows the stratification of aquatic environments with feIttoin＄talla＄eWage treatment Plantandto startan
differentecologICalpotentials．butalsointheirlocation． educationaIcarrIPalgn for the conservation of natural
naturalconditions，Waterquality．usesandpossibilityfor reSOurCeS．
Thelakesin the Patagonic Andes range，are theexploitation．
biggestsourceoffreshwaterforthePatagonianplateaus
where the climateis arid／Semiarid（annualrainfa less
Glaciallake＄
than500mm）．Some of thelakes owe their origin to
Pleistocene g］aciation and are now scarcely fed by
Thelakesofglacia10rlglnaredistributedmainlysouth
glaciers．resultingln
a marked decline ofwaterleveL，Ofthe360sline along the Andean range Patagonicos−
FuegulnOS．Their altitude and size are quite varied， andsalinization．Manylakesinthisreg10nlikeTrapalcoand Gualicho have been dried up and turned into
ranglngfromacoupletohundredsofsquareki10methers
saltwaterlagoon畠or salt mines．
insurfacearea．StandingoutinitssizeisLake Buenos
SomeOtherlakes，forinstance two cormectedlake＄
Aireswithanareaof2．240kn弓，Ofwhich39％isArgentinianMusters（434knuandColhueHuapi（800knH．occupywide
and the rest be10ngS tO Chilean．1tis foIlowed bytectonicdepressions．L Mustersisfed byariverfrom
Argentino（1，450kn ，Viedma（1，088knH，NahueIHuapi
theAndesandsupplle＄Wate【throughawaterchannelto（550kポ）and Lacarin turn．
Theseglaciallak岳sareverydeepandfedbymelting ComodoroRivadavia（populationlOO，00），theoircenteron the Atlantic coast．
glaciers．whichinL．Argentinoreachthelake stevelof
185 m above sealevel，Creating an exceptiona ybeautifullandscape．Themountahousareatothewest
ofthesefiord−1ikelakes，Withits humidIakes，Withits

Lagoonsin the Pampa and Northern reg10nS

humid cIimate，iscovered bydenseforeststhatcreep

ln the rest of the Argentine territory．we find only

down to th畠ice fringe，emPhasize scenic beautyand

lagoonsofdiver＄ifiedoriglnS，WaterSyStemSanda＄SOCiT

help controlerosion．The ea＄t−
ern shore，Onthe other hand，
extendsintothearidPatagonian
Plateau．
Thelake d‡strict have re−mainedalmo＄tUndisturbedwith−out the deterioration of original
lake water quality and are
SParSely populated except forsuch lakes as Lacar with San
MartindeLosAndes（popuIation
lO，000），NahuelHuapiwith Sar［
Carlosde Bari10Che（popLJlation
50．000）and Argentino with EI
Calafate（1，500）．These cities
serve as tour弓St Cente【SinNationalParks where human

6S∂ハ月OqUe Reserl／0什

CarJ iedoutbeforeconstruction，andfeweffectivemeas−
ated environments．There are thousands oftemporary
uresweretakentoconservewaterqualityandecosys−
lagoonsinthe Pampa，aflatIandwithsubhumid／hunlid
tems．Thebestknowncaseofpo utionisthereservoirof
CIimate and dedicated to the production ofgrainsand
San Roque Dam．
meat．ManyofthemhavebeeTldrainedorfi edup，WhiFe
San Roque reservoir（1．639ha），builtin1888andthesaEtLagoonsofMarChiquita10StSalinityowingtoan
enlargedin1944，is10CatedinCordobaPTOVinceatthe
unusualf100d disaster during thelast decade．
geographicalcenteroftheRepublic．1tswaterisusedfor
Amongtheexistentlagoonsinthisreg10n，SOmehave
thepublicwatersupplytoCordobaCity（populationover
had theirwaterqualityseriously endangered owing to
the discharge ofsolid andliquid wa竜tes．Meincue．del，000，000）and forirrigating downstream farmFands，
Qomez．Chascomus，de Monte，Mar Chiquita（Buenos While the surrouding area serves as afamiEiartourism
ZOne．rnCrea＄lngnumberoftouristsahdtheconstruction
Aires），etC．are the examples which used to be10CaI
OfahighwaytoCordobaresultedinahighgrowthrateof
recreation centers and are now suffering from waterPO‖ution．This seems to be the fate of mostlagoons
PermanentPOPuIationinthearea，eSPeCiallyCar10SPaz，
Closeto Pampean citiesin the denselyinhabited area．
the reso「tceロー
rnthearidand＄erTli−aridreg10nSOfmountainsNorth−ter on the lake
WeStandWest，thereareal＄OagreatnUmberoflagoons
Sho「e，CauSl咽Of varying safinity．Although their water quality has
PrOgre＄Sive
receivedlittleinfluencefTOmhumanactivity，thoseonthe
eutrophication†「
Plain／mountain borderland aregeneralFysufferingfrom
Ofthelakewa−
decreaslng WaterVOlume due to the use ofinfFowlng
ter during theriver water forirrlgationin farge ho「ticultura10aSeS
last two de−
Wherefruitproductionandpopu（ationareconcentrated．
Cades． A
We must mention the disappearance of Guanacha
StrOng demandlagoons as one of the most notoTious cases．
forimgation
Occur∂nCe O′〝∂fe√b／00J乃
8r a reSeryOfr
InthehottropICal／subtropICalplain＄Ofthe Northeast
Water during
Withannualrainfa exceeding800mm，theflatlandscapegrowing sea−
is ofteninterTuPted bythe marglnS Of river＄Wjth poor SOn brings about alow waterlevel，Whichin turndrainage．There marshes，SWamPS and hydrophyte accelerates eutrophicat‡on．
Vegetation give place to realembal＄ado＄（embank−
NotreatmentorcontroEmeasureshavebeenadopted
m占nts）andf10atingislandssupportinganextraordinariFy for urban andindustrialeffluents．SeveraF studies wererich amphibian founa．The marsh group ofJbera
madetocopewiththesituation，anditisnowplannedto（200，000knりinthecenterofCorrientesProvinceisthe
COnStrUCt SeWage WOrks for Carlos Paz city with amostimportant as an almost LJnlqUe area董n the woTld
Summer POPUlation of some100，000．The treatedWithrespecttoitsphysiography，biotaandhumanlife．1t
effluentmaybedisposedofonlandforaforestation．An
aqueductCOnStruCtionis also pIanned to supply addi−
has remained nearly pristine andisinhabited by raretionalwaterfrom an adjacent riverto the reservoirto
SPeCies that have already been extinguished efse−
makeitfeasibletooperateSanRoqueDam．sdischarge
Where or are not yet known to science．However，its
With a broader margm．
futureisendangered byhydrauIicproJeCt＄Whichcould
ThisisanexampIeinwhichtheplannedmanagement
fiooditcompletelyandraiseunknownecoIogicaIcon−
Ofthecatchmentba＄inasawhoFei＄Ofutterimporlance
SeqUenCe＄・
for environmenta y sound use oflakes．Not only anadequatecontro10fnutrientinf10Wbutalsoaneffective
Reservoirs
di＄Charge reglmeis afso［equired for the rational
managementofwaterresources，Which hastotakeinto
AparL from naturaIwaterbodies．there are manmade
OneS uSed for energy suppIy（EINihuil，EIChopon−
COnSideration various requITementS Of different users
CerrosColorados．GeneralBergrano，etC，），f100dcontrol invo（Ved that mayoften oPpose to each other．Thisis
andirrigation（Cruz delEje，Rio Hondo）or muft事Ple
ParticularIythecasewithsuchsmalIIakesasSanRoqueReservoir where the ratio of water supply capacity to
PUrPOSeS（Salto Grande），ln allthe cases with the
exception ofSaltoGrande，nPoecologICaIstudieswere
demandis sma ．
Conrado E．Bauer

Freshwater＄Ciences）
20−30August1987・Seoul．Korea・Enq．：Organizmg
Prof．GenadyN．Golubev，lLECMemberandAssistant Committee，K．P．0．BoxlOO8，Seou1110．
Executive Director of UNEP，Called on Hon．Minoru
22ndlnternationaIAssociation for HydrauIic Research
Lnaba，GovernorofShigaPrefecture，inOtsuonNovem−（lAHR）Congress on Advancementsin Hydraulics：lts
ber20，1986，in appreciation oftheovera supportof
Usesin Enginnering，EnvironmentalScience＄ andShiga PrefecturalGovernmenttoILEC・ln repfyforthe
Geophysics
questionsfromGov．1naba，Prof．Golubevsuggestedthat
31ALLguSt−4September1987・Lausanne．SwitzerIand．
UNEPcouldas＄istlLECinitsdeve10Pmentinsuchways
Enq．：Prof・WalterH・Graf，Laboratofred HydraulTque，
Ecole Polytechnique Federale，CHTlO15Lausanne．

PROF．GOLUBEV V［SITS SHIGA

Balaton Limno10gICallnstituteJubiFee Symposium on
Trophic Relationshipsinlnland Waters
l−4 September1987．Tihany，Hungary．Enq．：Dr．
P．Biro，BaIatonLimnoIoglCa11nstituteoftheHungaTian
Academy of Science＄，H−8237Tihany．
1nternationalSymposium：Comparative Study on Risk
Assessment and Management26−30 0ctober1987．0saka，Japan．Enq．：Prof．T．
Sueishi．Faculty of Enginnering，Osaka University，
Suita．Osaka565．

P′0たG・〟・GoJuboy什fp叫fa丑sw肋〃0∩・M・／nab∂「／e′り・
as：dispatching aseniorstaffmemberto［LEC，beanng
travelexpenses of participants from deveIoping coun−tries toILEC meetings，and entrusting a part of UNEP
PrO」eCtS tOILEC．

FORTHCOMING MEETINGS

1UBSInternationalSymposium on Biomonitonng oftheState of the Environment
6−8 November1987．Tokyo，Japan．Enq．：Dr．M．
Yasuno，Nationalrnstitute for EnvironmentalStudies，
Yatabe，Tsukuba305．
lnternationalSymposium on Red Tides−BioIogy，En−vironmental Science and Toxicology
lO−14NovembeT1987．Takamatsu，Japan．Enq．：Prof．
T．Okaichi，FacultyofAgricuIture，KagawaUni）ersity，
Mikicho．Kagawa761−07．

3rd Conference on Conservation and Management oflnternational Conference on Resenroir Limnology and
WorId Lake Environment
Water Quality
ll−17September1988．KesztheJy，Hungary．Enq．：Dr．
15−20June1987．Cesk畠Budejovice，■Czechosrova−
kia．Enq．：Dr．M．StraskTaba，HydrobioIoglCalLabora− S．Herodek，Balaton Limno10gICallnstitute of the
Hungarian＾cademy of Sciences，H−8237Tihany．
tory，lnstitute of Landscape EcoIogy，CzechosIovac
Academy of Sciences，Na sadkach7，37005Cesk色CALL FOR ARTICLl：S
Budeiovice，Czechos10Vakia■
xvIth Pacific Scienc8Congress（Section A，Eco10gy，COnSerVation and enviTOnmentaIprotection；Sectionl，Those who wish to contribute toJLEC News（etter are
invited to send manuscript＄tO the secretariat．

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cんShipPrefectur＆IGoYernment．4，1LIKyoI…Chi．Otsu，Shig−520．Japar．
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