Abstract
Management for sustainable river valleys requires balancing their natural values against the need for agricultural and recreational development on surrounding lands. The Southern Całowanie Peatland near the city of Warsaw sits on a sandy terrace and has well preserved Carex and Molinia stands existing in part of the area, especially where water tables are less than 1.5 m below the surface. The existing drainage network in this southern part has been poorly maintained and could be reestablished to help raise water levels for restoration of the peatland. Modflow was used to look at influence of drainage channel water levels on the overall water table height in the area. By raising water levels in the drainage system by 0.5 m it was found that 29% of the area would become suitable for increasing Carex and Molinia communities.
Highlights
Wetland habitats and their unique vegetation have been subject to many threats all over the world, mainly related with different drainage practices [1]
On sandy soils prevailing there, we found Caricetum gracilis stands (Carex shrubs) which promotes that area to a high rank from the viewpoint of nature conservation [5,7,8]
Results of hydrogeological surveys along with the recognition of dominating plant species within the Southern Całowanie Peatland revealed the need for a wise use of the existing drainage network
Summary
Wetland habitats and their unique vegetation have been subject to many threats all over the world, mainly related with different drainage practices [1]. For many decades without proper water management on those areas, hydrologic conditions have been substantially changed, leading to gradual loss of valuable ecosystems [1]. It used to be a frequent case, that the parameters of water management systems (i.e., discharge or drainage rates, water damming heights) were not properly adjusted and did not maintain water tables necessary for native wetland vegetation [3]. LOevneelsofotrhfeloboigdginegstfurenqcueertnaciynt[i6e,s1i0n].tShienrceestthoreartieolenvoafncweeotlfancrditheryidarioslostgiyll issutbhjeecftotromdoisfctuhsesicornit,erwiae, caonndstihdeereendvitrhoenmadeonptatilovnaroiaf btlhersetshhaotldcanvableueesasoilfygartotruinbudtewdattoertalregveetlshafobritastanqudaylistoyi—lsi.oen., wthaetebralseivseolsf tPmoots0hou.rvo4,emelefl0imarnsommdhtsoehuoaad,eeprnriaxenitanpzidrgotedeehendrfapemrioeeotbrhfnqafeyt:cuxPlhie0Sieaorm,.znebl4sauscui0ulhnynimmmotdi[yel6,md,awb,o1laavelfi0nocira]tndiwzhl.zugSee[ame1ijdbusan1alnscob]exteafyaiidlmfgtsyiSher:esuzopedemumutsrbhnneihny:liadeeei0lrmvwlwr.eo4easiuawi5ncentmzcaeam,errb[bc.a1ollaheel1Tfslv]ooicdhenanrwoeligssptsaa:efettbmorwhhivlra:eeiiansdm0iladise.um4neosre5dptaunsiytmnlmhalvgsr.saoe(eauTuliluolbehlpsfoexjoeposswtcseneoftenariitltrbshvsolmiil.eavmedIllbenuydiilasteytec)rshsp:euiusilta0ssahsosr.wte3iefe(od5Pudaenyopmox,tl,vtpowi,ewseenmhserreoscetleiiahiovxlamtnepetpnelsiehaytmidr)rdyi:eeuepse0apnisrt.ceeetc3oahddde5fl:, pProolapnedrt,iebsei[n7g,12ju].stified by research on a wide range of soils. In this way, we attempted to ensure the reliabTilaiktyinogf tthhee arnesaulyltssesohf etwreoins, ubravsienygs tthheamt doinscvoavleureesdfivrmullnyerrealbaltee,drtiovesroivlaplhleyysihcaalbpitraotspeorntiessh[a7ll,1o2w]. We attempted to ensure the reliabTilaiktyinogf tthhee arnesaulyltssesohf etwreoins, ubravsienygs tthheamt doinscvoavleureesdfivrmullnyerrealbaltee,drtiovesroivlaplhleyysihcaalbpitraotspeorntiessh[a7ll,1o2w]. wateTr atkabinleg tshoeilrseisnutlotsaocfctowuonts,uwrveeyaismtheadt dtoisacpovpelyregdrvouulnnderwabaltee,rrimveordveallilnegy ahnadbittaotsdoentesrhmailnloewpwroapteerr ctarbitleerisaoitlos ipnrtoovaectchoeunpto, twenetaiaiml feodr thoyadproplloyggicroruenstdorwaatitoenr mofotdheeliSnoguatnhdertno CdaetłeorwmainnieepPreoaptelarncdri.teItriwa atos papttmhesroreasosruetviattbmceitoyehte.nhirdneewcstprhhoeooauatltsleddibnnvytgmiaaliwelunefaceotrtseretfrahhoslrryeiendvtshgehreoloswlmloidangatviietcnharterleuleeensevxtasoienslrftcsoaientriigonotfhnntCeheoatemfwreteaoxhxireisnksttStaeoionnnfudgactshnhnacweeenrtinntwohefCoilnsrCa,kłaagorrosweoafxuancnsndhtdiyaaen-nwvPdnaaeseltalleetwsrly,aitgtnatherbdiorln.reuaInptacdewos.saawitnsiaodatnyses-rwvutaomalulbeellddye
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