Angiolini, C.

Bonari, G. M.

Coppi, Andrea

Gigante, D.

Lastrucci, Lorenzo

Nistri, B.

Reale, L.

Vaselli, Orlando

Viciani, Daniele

English

Florence Research

	  49°	  Congresso	  della	  Società	  Italiana	  di	  Scienza	  della	  Vegetazione	  (SISV)	  LA	  SCIENZA	  DELLA	  VEGETAZIONE	  PER	  LA	  BIODIVERSITÀ	  E	  LA	  SOSTENIBILITÀ	  Ancona	  24-­‐26	  Settembre	  2015	  Aula	  azzurra	  –	  Polo	  di	  Montedago	  	  	  	  	  	  	   	  	   52	  [10] Reed-­‐bed	  decline	  phenomenon	  in	  central	  Italy:	  the	  case	  of	  Montepulciano	  lake	  	  Lastrucci	  L.1,	  Gigante	  D.2,	  Bonari	  G.M.	  3,	  Vaselli	  O.	  4,	  Nisi	  B.	  4,	  Coppi	  A.	  1,	  Reale	  L.	  5,	  Viciani	  D.	  1,	  Angiolini	  C.	  3*	  1	  Department	  of	  Biology,	  University	  of	  Florence,	  Italy;	  2	  Department	  of	  Chemistry,	  Biology	  and	  Biotechnology,	  University	  of	  Perugia,	  Italy;	  3	  Department	  of	  Life	  Sciences,	  University	  of	  Siena,	  Italy;4	  Department	  of	  Earth	  Sciences,	  University	  of	  Florence,	  Italy	  5	  Department	  of	  Agricultural,	  Food	  and	  Environmental	  Sciences,	  University	  of	  Perugia,	  Italy;	  *claudia.angiolini@unisi.it	  	  Our	  contribute	  is	  part	  of	  a	  more	  comprehensive	  study	  about	  the	  die-­‐back	  syndrome	  of	  Phragmites	  australis	  (Cav.)	  Steud.	  in	  central	  Italy	  (Gigante	  et	  al.,	  2011;	  Gigante	  et	  al.,	  2014).	  The	  lacustrine	  ecosystem	  of	  Montepulciano	  lake,	  designed	  as	  a	  Site	  of	  Community	  Importance	   (SCI)	   according	   to	   the	   European	   92/43/EEC	   ‘Habitats’	   Directive,	   has	   been	   investigated	   performing	   a	   diachronic	  analysis	  of	  reed	  vegetation	  maps.	  Moreover	  analyses	  of	  macromorphological	  traits	  of	  common	  reed	  beds	  together	  with	  selected	  sediments	  and	  interstitial	  water	  chemical	  parameters	  and	  flooding	  were	  done.	  Main	  aim	  is	  to	  check	  the	  regression	  of	  reed-­‐bed	  and	  its	   relations	  with	   these	   factors.	  Our	  results	  highlighted	   that,	   in	   some	  areas	  of	   the	  reed-­‐beds,	  macromorphological	   traits	  of	   reed	  decline	  are	  the	  typical	  ones	  of	  the	  die-­‐back	  syndrome	  reported	  for	  other	  sites:	  clumped	  habit,	  dead	  buds,	  higher	  stem	  density	  and	  reduced	  height.	  These	  data	  together	  with	  the	  retreat	  of	  reed-­‐beds	  from	  the	  water	  surface	  during	  the	  last	  decades	  confirm	  that	  this	  phenomenon	  occurs	   in	   central	   Italy	   and	   its	  distribution	  area	   should	  be	  probably	  enlarged	   to	   encompass	  all	   the	  Mediterranean	  basin.	  As	  it	  can	  be	  found	  in	  literature,	  the	  symptoms	  of	  reed	  die-­‐back	  are	  strongest	  in	  individuals	  (ramets)	  of	  permanently	  flooded	  areas.	   Some	   chemical	   parameters	   of	   the	   sediment,	   like	   availability	   of	   arsenic,	   chromium,	   cobalt	   and	   sulphate,	   seem	   to	   be	  correlated	  to	  this	  process.	  The	  results	  of	  the	  investigations	  in	  Montepulciano	  lake	  confirm	  that	  stressing	  conditions	  (e.g.	  flooding)	  co-­‐occurring	  with	   the	  presence	  of	   some	   chemical	   elements	   (e.g.	   heavy	  metals)	   in	   the	   soil	  may	  have	   an	   effect	   on	   the	  decline	  of	  common	  reed.	  	  References	  Gigante	  D.,	  Angiolini	  C.,	  et	  al.,	  2014.	  New	  occurrence	  of	  reed	  bed	  decline	  in	  S-­‐Europe:	  do	  permanent	  flooding	  and	  chemical	  parameters	  play	  a	  role?	  Comptes	  rendus	  Biologies,	  337	  (7-­‐8):	  487-­‐498.	  Gigante	  D.,	  Venanzoni	  R.,	  Zuccarello	  V.,	  2011.	  Reed	  dieback	  in	  southern	  Europe?	  A	  case	  study	  from	  Central	  Italy.	  Comptes	  rendus	  Biologies,	  334	  (4):	  327–336.	  	  	   	  

Reed-bed decline phenomenon in central Italy: the case of Montepulciano lake.

https://flore.unifi.it/bitstream/2158/1008516/1/2015%20Die%20back%20Montepulciano%20SISV%20AN%20abstract.pdf

Reed-bed decline phenomenon in central Italy: the case of Montepulciano lake.

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