6
Journal of Coastal Research SI 39 170 - 175 ICS 2004 (Proceedings) Brazil ISSN 0749-0208 BOENZI, F.; CALDARA, M.; PENNETTA, L. and SIMONE, O, 2006. Environmental aspects related to the physical evolution of some wetlands along the Adriatic coast of Apulia (Southern Italy): a review. Journal of Coastal Research, SI 39 (Proceedings of the 8th International Coastal Symposium), 170 - 175. Itajaí, SC, Brazil, ISSN 0749- 0208. During the Holocene a number of lacustrine basins and lagoons have been in existence along the Apulian Adriatic coast (Italy) between the Gargano Promontory and the Salento Peninsula. Some of these are now extinct. In addition to morphological evidence and sedimentary sequences, there are ancient reports and maps that document the past extent of these lakes and wetlands. We have examined the history of Lesina, Varano and Battaglia lakes on the Gargano coast and the Salpi and Salso lakes on the Tavoliere coast. In addition, were investigated the evolution of the Ariscianne marsh on the Murgian coast, the development of the Cesine Wetland and the history of theAlimini Lakes on the Salento coast. For each site we have briefly reconstructed the origin, evolution and the eventual extinction using documentary, archaeological and geological evidence. It is proposed that the great part of these lagoons, coastal lakes and wetlands were set up because of the Holocene sea level rise and were at their maximum between the Neolithic and the Bronze Age. This was a period of relative stability, when eustatic rise had slowed and local sea level stood very close to the present level. The evolution and, in some cases, the extinction of these basins is attributed to changes in the local coastal environment, the regional climatic situation and anthropogenic activity. ADDITIONAL INDEX WORDS: Lagoons, coastal lakes, Holocene evolution. ABSTRACT Environmental Aspects Related to the Physical Evolution of Some Wetlands Along the Adriatic Coast of Apulia (Southern Italy): a Review F. Boenzi†; M. Caldara† L. Pennetta† and O. Simone‡ ; INTRODUCTION Our aim was to reconstruct the origin and the evolution of some principal Late Holocene wetlands and water bodies (lagoons, coastal lakes and swamps) in four areas along the Apulian Adriatic coast of Italy (Figure 1). Particular attention was given to the timing of setting and the modification or extinction causes of these features. This aim was achieved by the examination of original or published geomorphologic, stratigraphic and historical data at each site. In this paper the four areas are considered in north-south order along the Apulian coast, starting with Gargano Promontory. The second area examined is part of the Tavoliere coastal region, between the Candelaro stream and the Ofanto river. The other investigated sites are situated on the Murgian coast between Barletta and Monopoli and in the Salento region between San Cataldo and Otranto. Along the Gargano Promontory the area surrounding the modern Lesina and Varano lakes and an ancient coastal basin, the now extinct Battaglia Lake, were investigated. Lesina and Varano lakes are considered to be basins isolated from the sea by a sand barrier. This coastal barrier system was formed by the redistribution, by the easterly trending long- shore drift, of marine sediment produced in the greater part by the Fortore River. The modern lakes are separated from the sea by a broad ridge of sand dunes, which is punctuated in places by entrances. Unfortunately we do not have at the moment enough chronological elements to precisely reconstruct the history of the evolution of these coastal basins. However, we would postulate that they were pre-existing Late Pleistocene backshore or near shore depressions flooded by the sea during the Late Glacial-Holocene transgression (D , 2001). The barring of these bays occurred over a large period of time and at different moments. The evidence suggests that the Lesina Lake, which is the nearest to the mouth of the Fortore River, is the most ancient barring event. In the western part of the coastal ridge there are remnants of Neolithic and Bronze Age settlements (G , 1995). To the east of this area there are traces of a Roman farm belonging to the Imperial Period and some other remains dated to the Republican or Early Imperial Period (G , 1999a). The sand barrier closing the Varano Lake, the most distant from the Fortore River, has a more recent archaeological record. In the 1 century A.D still defined the Varano Lake with the words (Urio Bay), suggesting that this bay was not totally isolated from the sea at this time. However, at several sites on the barrier have been found archaeological remains dating back to Eneolithic - Early Bronze Age (G , 1996b). A radiometric C age of 4720 ± 40 BP (uncalibrated) has been obtained from sp. shells collected at the westernmost tip of the littoral spit (M and S , 2002). The morphology of the modern dune ridge that separates Lesina Lake from the sea suggests a succession of ancient modifications. Several gullies that partially cut the sand barrier terminate in to the lagoon with a distinct micro-delta form. These have been interpreted by G (2001) as washover fans due to past tsunami events. There are historical documents picturing the Lesina Lake experiencing tsunami waves triggered by the major earthquake of the 30 July 1627 (M and M , 1981). The utter destruction of the town of Lesina, which was located on the inner lagoon shore, is recorded in the map of G (1627), where the lake is shown as dry, and in the chronicles of D (1627), where the author speaks about the lake being without water for many hours. The same Author describes how fish were transported and stranded far away from the lagoon. Recently man has cut several artificial entrances that are maintained clear in order to ease the exchange between the lagoon and the sea waters (for example: Capoiale canal). Both the lakes are now intensively utilized for fishing and for the breeding of mussels. Sedimentation in the most inner areas is a contemporary problem, and many areas are now getting slowly WETLANDS: DESCRIPTION AND EVOLUTION The Gargano Coast E PIPPO RAVINA RAVINA PLINIUS RAVINA ASTRONUZZI ANS IANFREDA OLIN ARGOTTINI REUTER E POARDI et al. “Seno Uriano” Helix et al. st 14 th Ò Infilled by active encroachment of thick reed-swamp. †Dipartimento di Geologia e Geofisica, Università di Bari 70125, Italy [email protected] ‡ Dottorato di Ricerca in Geomorfologia e Dinamica Ambientale, Università di Bari, 70125, Italy [email protected] Journal of Coastal Research Special Issue 39, 2006 ,

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Page 1: Environmental Aspects Related to the Physical Evolution of ...siaiacad09.univali.br/ics2004/arquivos/31_boenzi.pdf · Journal of Coastal Research SI 39 170 - 175 ICS 2004 (Proceedings)

Journal of Coastal Research SI 39 170 - 175 ICS 2004 (Proceedings) Brazil ISSN 0749-0208

BOENZI, F.; CALDARA, M.; PENNETTA, L. and SIMONE, O, 2006. Environmental aspects related to thephysical evolution of some wetlands along theAdriatic coast ofApulia (Southern Italy): a review. Journal of CoastalResearch, SI 39 (Proceedings of the 8th International Coastal Symposium), 170 - 175. Itajaí, SC, Brazil, ISSN 0749-0208.

During the Holocene a number of lacustrine basins and lagoons have been in existence along the Apulian Adriaticcoast (Italy) between the Gargano Promontory and the Salento Peninsula. Some of these are now extinct. In additionto morphological evidence and sedimentary sequences, there are ancient reports and maps that document the pastextent of these lakes and wetlands. We have examined the history of Lesina, Varano and Battaglia lakes on theGargano coast and the Salpi and Salso lakes on the Tavoliere coast. In addition, were investigated the evolution of theAriscianne marsh on the Murgian coast, the development of the Cesine Wetland and the history of theAlimini Lakeson the Salento coast. For each site we have briefly reconstructed the origin, evolution and the eventual extinctionusing documentary, archaeological and geological evidence. It is proposed that the great part of these lagoons,coastal lakes and wetlands were set up because of the Holocene sea level rise and were at their maximum between theNeolithic and the Bronze Age. This was a period of relative stability, when eustatic rise had slowed and local sealevel stood very close to the present level. The evolution and, in some cases, the extinction of these basins isattributed to changes in the local coastal environment, the regional climatic situation and anthropogenic activity.

ADDITIONAL INDEX WORDS: Lagoons, coastal lakes, Holocene evolution.

ABSTRACT

Environmental Aspects Related to the Physical Evolution of Some WetlandsAlong the Adriatic Coast of Apulia (Southern Italy): a Review

F. Boenzi†; M. Caldara† L. Pennetta† and O. Simone‡;

INTRODUCTION

Our aim was to reconstruct the origin and the evolution ofsome principal Late Holocene wetlands and water bodies(lagoons, coastal lakes and swamps) in four areas along theApulian Adriatic coast of Italy (Figure 1). Particular attentionwas given to the timing of setting and the modification orextinction causes of these features. This aim was achieved bythe examination of original or published geomorphologic,stratigraphic and historical data at each site. In this paper thefour areas are considered in north-south order along theApuliancoast, starting with Gargano Promontory. The second areaexamined is part of the Tavoliere coastal region, between theCandelaro stream and the Ofanto river. The other investigatedsites are situated on the Murgian coast between Barletta andMonopoli and in the Salento region between San Cataldo andOtranto.

Along the Gargano Promontory the area surrounding themodern Lesina and Varano lakes and an ancient coastal basin,the now extinct Battaglia Lake, were investigated.

Lesina and Varano lakes are considered to be basins isolatedfrom the sea by a sand barrier. This coastal barrier system wasformed by the redistribution, by the easterly trending long-shore drift, of marine sediment produced in the greater part bythe Fortore River. The modern lakes are separated from the seaby a broad ridge of sand dunes, which is punctuated in places byentrances. Unfortunately we do not have at the moment enoughchronological elements to precisely reconstruct the history ofthe evolution of these coastal basins. However, we wouldpostulate that they were pre-existing Late Pleistocenebackshore or near shore depressions flooded by the sea duringthe Late Glacial-Holocene transgression (D , 2001).

The barring of these bays occurred over a large period of timeand at different moments. The evidence suggests that the Lesina

Lake, which is the nearest to the mouth of the Fortore River, isthe most ancient barring event. In the western part of the coastalridge there are remnants of Neolithic and Bronze Agesettlements (G , 1995). To the east of this area there aretraces of a Roman farm belonging to the Imperial Period andsome other remains dated to the Republican or Early ImperialPeriod (G , 1999a). The sand barrier closing the VaranoLake, the most distant from the Fortore River, has a more recent

archaeological record. In the 1 century A.D stilldefined the Varano Lake with the words (UrioBay), suggesting that this bay was not totally isolated from thesea at this time. However, at several sites on the barrier havebeen found archaeological remains dating back to Eneolithic -Early Bronze Age (G , 1996b). A radiometric C age of4720 ± 40 BP (uncalibrated) has been obtained from sp.shells collected at the westernmost tip of the littoral spit(M and S , 2002).

The morphology of the modern dune ridge that separatesLesina Lake from the sea suggests a succession of ancientmodifications. Several gullies that partially cut the sand barrierterminate in to the lagoon with a distinct micro-delta form.These have been interpreted by G (2001) aswashover fans due to past tsunami events. There are historicaldocuments picturing the Lesina Lake experiencing tsunamiwaves triggered by the major earthquake of the 30 July 1627(M and M , 1981). The utter destruction of thetown of Lesina, which was located on the inner lagoon shore, isrecorded in the map of G (1627), where the lake isshown as dry, and in the chronicles of D (1627), wherethe author speaks about the lake being without water for manyhours. The same Author describes how fish were transportedand stranded far away from the lagoon.

Recently man has cut several artificial entrances that aremaintained clear in order to ease the exchange between thelagoon and the sea waters (for example: Capoiale canal). Boththe lakes are now intensively utilized for fishing and for thebreeding of mussels. Sedimentation in the most inner areas is acontemporary problem, and many areas are now getting slowly

WETLANDS: DESCRIPTION ANDEVOLUTION

The Gargano Coast

E PIPPO

RAVINA

RAVINA

PLINIUS

RAVINA

ASTRONUZZI ANS

IANFREDA

OLIN ARGOTTINI

REUTER

E POARDI

et al.

“Seno Uriano”

Helix

et al.

st

14

th

Ò

Infilled by active encroachment of thick reed-swamp.

†Dipartimento di Geologia e Geofisica,Università di Bari70125, [email protected]

‡ Dottorato di Ricerca in Geomorfologia e DinamicaAmbientale,Università di Bari,70125, [email protected]

Journal of Coastal Research Special Issue 39, 2006,

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Another lake, the larger one on the eastern coast of theGargano and now extinct, was called Battaglia Lake. This basinis clearly represented on ancient maps. These documents show

that this lake was in existence around the mid 16 century(C and S , 1590-97). It is still present in themap of M (1836) but either the basin and its toponymdo not appear in the first IGMI map (Italian MilitaryGeographic Institute F.° 157 IV “Vieste”), realized in 1869.

th

ARTARO TIGLIOLA

ARZOLLA

In order to determine the past extent and location of BattagliaLake, a geological-morphological study has been carried outalong the Gargano coast between Vieste and Peschici (Figure2). Along this sinuous stretch of coast there is a number ofheadlands and fluvial valleys that are now barred by dunes morethan 20 meters high. Nowadays, back-swamps have developedat some locations (Paludi di Sfinale, Santa Maria andMolinelle), while in other sites the coastal deposits gradeprogressively into the alluvial sediments at the bottom of thevalley, without any marked topographical changes. We suggestthat during the high stand that followed the peak of theHolocene transgression, these valleys were first flooded deepinland and then gradually infilled by alluvial sediments.

The timing of the closure of these inlets and basins is notclear, and our research highlighted the paucity of informationavailable on this subject. Recently a date C based onsp. from the dunes near Palude di Sfinale gave a conventionalage of 3620 ± 14 BP (M and S , 2002). Coredrillings near Vieste (Palude Pantanello) show that 5 metersbelow modern sea level it is possible to find sedimentscharacterized by a brackish fauna dominated by

and Fragments of Neolithicimpressed pottery have been recovered at some sitescontemporaneous to these brackish deposits (G , 1989).

The distinctive three tipped shape of the ancient BattagliaLake permitted to univocally locate it in the Palude di SantaMaria and the Palude di Molinella area. The former, representedin the 1869 IGMI's map, was totally reclaimed at the end of the19 century (P , 1865). The latter, still existing near thesea, is the only evidence of the existence of an ancient lake. Theextinction of Battaglia Lake probably occurred during the mid-late 1800s. Our study lead us to propose that the lake may have

been infilled after the deforestation of northern areas of theGargano Promontory in the 18 (M , 1806-07) andearly 19 centuries. This anthropogenic activity would haveresulted in increased soil erosion that caused an acceleration ofthe infilling processes.

Once the lake was univocally located, we drilled a core in thecentral part of the Palude di Santa Maria. At the moment thestudy of the core is in process. Nonetheless, the preliminaryresults and two radiocarbon dates obtained from vegetalremains suggest that the Battaglia Lake in the origin was a deep

The barring of this embayment started during the NeolithicAge (5180 ± 50 BP uncal), while a fresh lake environmentexisted at least during the MiddleAges (990 ± 40 BPuncal).

Along the Tavoliere di Puglia coast there are the largest andmost studied wetlands of Apulian region. The many previousmultidisciplinary studies carried out in this region led to a goodunderstanding of the evolution of these wetlands. In particular,the areas that correspond to the Palude Frattarolo, a relic of theSalso Lake, and to the Margherita di Savoia saltworks site, relicof Salpi Lake, have well documented histories (B ,1994; C , 1994). These two lake basins, as manystudies pointed out (C and P , 1990; 1992;C ., 2002), originally were part of one large EarlyHolocene lagoon stretching between the Gargano and theOfanto River (Figure 3). These wetlands had a common historyup to the Roman times. The starting point of our reconstructionis the Early Holocene, when the sea level begun to rise. In theTavoliere area the Post Glacial transgression was characterizedby periods of semi-stability in relative sea-level. These standscaused the formation along the coastland of a large lagoonconnected to the sea (C and P , 1996;C , 2002).

Between the 7 and 6 millennium BC, at the beginning ofthe Neolithic, the marine transgression decelerated and thepaleoshoreline established at some 16-20 meters below presentsea level. On the stretch of Tavoliere south of Manfredonia asubstantial back-barrier basin developed. At this time, ~6000BP, good climate conditions (the Climatic Optimum) amassive colonization from across the Adriatic Sea. There was agreat expansion in the local population, especially along theinner side of the lagoon, where the inhabitants lived uponagriculture and fishing (C ,2005).

In the 4 millennium BC, during the Late Neolithic, theclimate become dryer, and a massive depopulation of theTavoliere plain took place. The dry-hot climate, thatcharacterized this phase, led to great changes in the Tavolierelandscape. The lake basin became a sabkha, where occurred theformation of evaporite deposits, mostly gypsum crystallized in

14

th

th th

th

Pomatias

Cerastodermaglaucum Abra segmentum.

ria.

et al.et al.

et al

et al.

et al.

ASTRONUZZI ANS

RAVINA

ARETO

ANICONE

ATTISTA

ALDARA

ALDARA ENNETTA

ALDARA

ALDARA ENNETTA

ALDARA

ALDARA

Ò

th

th

The Tavoliere Coast

favoured

Environmental Aspects of Some Wetlands Along the Adriatic Coast

Figure 1. Wetlands that had to be reclaimed after the unity ofItaly according to P , 1865 (from B ., 1998;modified). Key to symbols: G = Gargano coast: 1 = Stagni diBosco Maresca and Acqua Morta; 2 = Lesina Lake; 3 = VaranoLake; 4 = Spinola Lake and Paludi di Vieste; T = Tavoliere coast:1 = Paludi Sipontine; 2 = Pantano Salso and Versentino Lake; 3= Salpi Lake and Giardino Lake; M = Murgian coast: 1 = Paludidestra Ofanto; 2 = Wet area between Barletta and Trani; 3 =wetlands near Bari: Marisabella, Fesca, San Francesco, SanGiorgio; S = Salento coast: 1 = Wet areas between Monopoliand Brindisi; 2 = Paludi di Brindisi; 3 = Wetlands betweenBrindisi and Otranto: paludi di S. Cataldo, le Cesine, Fontanelledi Otranto; 4 =Alimini Lakes.

ARETO OENZI et al

Figure 2. Schematic geologic map with the reconstruction of theXVIII century Battaglia Lake. Compare the reconstructed lakecontour with the shape shown in the map of P (1789)AZZINI

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the typical 'desert rose' shape (C and P , 1993;B , 2002). The aridity induced people living in theTavoliere, who had devolved advanced cultivation techniquesby this point, to adopt a more pastoral type of farming, withsheep rearing replacing the earlier agriculture. Between the 21 millennium BC, the prevailing local environment becamemore suitable for human inhabitation (C , 1999;2002). During the Metal Ages some settlements began todevelop again around the lagoon. This expansion reached itsmaximum during the Iron Age with the establishment of theDaunian villages of Coppa Nevigata, Masseria Cupola, Torrettadei Monaci and Giardino (C and P , 1992b).

During the Roman Period the lake basin was divided into twosmaller lakes. The larger southern one was the Salpi Lake basin,and the smaller one to the north became the Salso Lake. It is hardto determine what caused these changes, but according to T

( , XXXIX, 2) this subdivisiontook place after a strong increase in the turbid discharge of theinflowing rivers coming from theAppennino Mounts, includingthe Cervaro and Carapelle streams. The cause of the increase inthe sediment production in the catchment could be climatic, butit is not possible to exclude the anthropogenic influence. In fact,in that period large areas of the Southern Appennino Mountswere widely deforested by Romans and cultivated.

During the following centuries each basin evolvedindependently (C and P , 1992a; C

, 2002).There are not many documents about the conditions of the

two lakes during the Middle Ages, but, in general, this area waswidely populated and the coastal area remained a lagoon untilthe 15 century, because of the opening of many artificialentrances.

For the following centuries the documentary data are moreconsistent. By these it is possible to understand the natural andthe anthropic causes that ruled the evolution of Salpi Lake, partof which was exploited for salt production.

Between the end of 1600s and the second half of 1800s someruinous floods caused the rising of the lake level and urged thehuman action.

The first land reclamation attempt (Paludi di Siponto)

occurred in the 16 century. The artificial diversion of theCervaro and Ofanto rivers, directly on the area of Salpi Lake,were made during the first part of the 19 century (C

, 2002). Land reclamation became more intense in the 20century; in fact, many extensive works started after the issues ofthe “ ” law (1933), the “

” (Project for Agrar ianTransformation, 1938) and the “

” (Project for Land Transformation, 1948).At presentonly a few areas of the great Neolithic lagoon survive: in thenorth, a small wet area called Palude Frattarolo (a relic of theancient Salso lake included in the Gargano National Park), inthe south the Margherita di Savoia Saltworks (Saline diMargherita di Savoia), protected after the 1970 RamsarInternationalAgreement, and a number of small artificial basinsused as aquaculture ponds or as fishing-hunting reserves.

At the beginning of the Holocene, the coastal plain betweenSan Cataldo and Otranto was extended a few kilometersoffshore.

The transgression is more evident where the angle of slope isless pronounced, that is in the areas facing Le Cesine (more than2.5 km) and theAlimini Lakes (3.5 km).

The sea rise also the undergroundhydrology producing a rise of the water table that caused theestablishment of numerous wetlands in the depressions near thecoast. In the areas facing Le Cesine and the Alimini Lakes, thedevelopment of an obstructing dune belt enhanced thesuperficial water ponding (H , 1999). The availability offresh water the colonization process of this area. Infact, in the Alimini area were found numerous traces of human

ALDARA ENNETTA

OENZI

ALDARA

ALDARA ENNETTA

ITUS

LIVIUS

ALDARA ENNETTA ALDARA

ALDARA

ARDING

et al.

et al.

Ab Urbe Condita Libri

etal.

etal.

Serpieri-Iandolo Piano diTrasformazione Agraria

Piano di TrasformazioneFondiaria

nd

st

th

th

th

th

The Murgian Coast

This stretch of coast extends along the Adriatic edge of theAltopiano delle Murge. Here the wetlands reflect themorphology of the Murgian calcareous massif. In particular aseries of ephemeral streams, locally called “ ”, flowtowards the coast.

By the analysis of the sea bottom morphology it is apparentthat during the last glacial maximum the mouths of these riverswere situated much farther off, as the sea level was 120 meterslower and the shoreline was situated 10 kilometers offshore.

The Holocene sea level rise caused the flooding of the lowersections of these ephemeral streams. In some cases thesehave been closed by the longshore drifting sand ( and

, 2002). In the long run these basins have disappearedbecause of alluvial deposits and human action, even if some ofthem survived until the second half of the 19 century (forexample: Marisabella Lake and the Palude San Francesco, nearBari).

Some information about the evolution of these basins can beobtained by stratigraphic and environmental studies, still inprogress, carried out along the coast between the towns ofBarletta and Trani, the Palude Ariscianne, at the mouth of theCamaggi stream. By these studies, supported by C data, wereidentified sediments belonging to two Holocene lagoons,overlapping a Tyrrhenian lagoon, both characterized by variousparalic environments. The first sea level high stand occurredbetween the radiocarbon dates 7040 ± 50 BP (uncalibrated,performed on a shell) and 6160 ± 40 BP(uncalibrated, performed on a shell). Thesecond lagoonal episode occurred between 3850 ± 40 BP(uncalibrated, shell) and 2540 ± 40 BP(uncalibrated, shell). The lagoongradually reduced its size because of natural infilling. Duringthe first half of the last century the whole area, still wet, wassubjected to reclamation works. Nowadays, near the shorelinethere still exist some little marshy areas. In conclusion, theevolution of this wetland has been controlled by sea levelfluctuations up to the last century, when reclamation worksbegun.

lame

rias

Planorbis planorbisBithynia leachi

Ovatella myosotisCerastoderma glaucum

CALDARA

PENNETTA

th

14

The Salento Coast

produced changes in

favoured

Boenzi et al.

Figure 3. The evolution of the Salpi lagoon from the NeolithicAge to the Present (from B , 2002: modified). Key tosymbols. 1 - Neolithic lagoon; 2 - Probable Neolithic shoreline;3 - Lagoon of the 3 century BC (S , 1973); 4 - Lagoonof the 1 century BC (D , 1978); 5) DitchedNeolithic villages; 6) Main Daunian and Roman settlements.The Daunian Torretta dei Monaci, Mass. Cupola, CoppaNevigata were inner lagoon ports, while Arpi was a river port.The Roman Salapia was an inner lagoonal port, while Sipontowas a sea port.

OENZI

CHMIEDT

ELANO SMITH

et al.

rd

st

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o c c u p a t i o n d a t i n g b a c k

since the Middle Paleolithic (P , 1978). Areconstruction of the Holocene evolution of the Le Cesine andtheAlimini areas is reported by H (1999).

The pollen analysis of some cores drilled in the Alimini areashows that during the Middle and until the Late Neolithic theneighborhood was characterized by a open spaces grassvegetation. Wetter conditions established at about the end of theNeolithic when, locally, the grassland was accompanied withscrubs and woodlands.

At the beginning of the Bronze Age, due to the milderclimate, a lush mixed woodland dominated by deciduous andevergreen oak, established. From the Middle Bronze Age thiskind of vegetation underwent a fast decline. In fact, the corerecords show the presence of a great quantity of charcoal,interpreted as the consequence of man driven clearance carriedout in order to exploit the area for farming (H , 1999). Itwas in this period that a first intense phase of alluviationoccurred, causing a fast raising of the lagoon bottom.

The macchia vegetation and the woodlands grew againduring the Roman Period; a renewal of the natural vegetationcould probably be explained with the abandonment of ruralareas due to the unhealthiness of the environment (

).During the post-Roman period this area was mostlydepopulated because of the Saracen incursions (7 and 9centuries) and the Norman occupation (11 and 12 centuries).However, according to (1979), the general

settlement pattern and the agricultural organization persisteduntil the MiddleAges.

The sharp decline of macchia vegetation and woodlands andthe great presence of cultivated plants ( ), recorded startingfrom the Middle Ages, are explained as a renewal of theagricultural activities in the zone (H , 1999).

Between the 16 and 18 century, because of the frequentTurkish and Saracen incursions, the settlement pattern becamescattered and characterized by fortified farmsteads. Thepopulation lived upon sheep breeding and cereals and olivecultivation, while the macchia and marsh vegetation declined(S , 1957). In those years the economic development waslimited by the malaria, because of the great presence ofunhealthy swamps along the coastland. This environmentalsituation lasted until the 20 century.

At the beginning of the Italian Kingdom P (1865)reports about the existence of wide abandoned areas, oncecovered by vineyards and olive trees. It is also documented thepresence, beside Le Cesine and Alimini Lakes, of a series ofmarshes; some of those were small and dried up during the lessrainy periods of the year. Among those wetlands were, forexample, Palude Fiorello, Paludi di Termolito, Il Campoletrano,La Longa, Paludi Sausi, Paludi Pozzelle etc. (O , 1885).

The present day landscape is due to several reclamationscarried out between the second half of the 19 century and thefirst decades of the 20 century (Figure 4). Le Cesine andAlimini Lakes are what remains of the wide marshlandestablished along the coast between San Cataldo and Otranto atthe beginning of the Holocene. The exploitation of the territoryis based on agriculture, while the natural and semi-naturalvegetation are confined in areas protected or not suitable forfarming. At the present the littoral area facing the Le Cesine isaffected by a marked retreat (M , 1997) that willinfluence its future evolution.

The origin of the coastal basins on the Adriatic coast ofApulia is generally linked to the Holocene sea level rise.Nevertheless the data collected so far lead us to suppose that theestablishment of the Holocene wetlands did not occureverywhere simultaneously. In particular, we think that theother principal contributing factors were the nature andmorphology of the substrate and the local sea-weatherconditions.

The most ancient lagoons (Tab. 1) were those established atPalude Ariscianne (7040 ± 50 uncal. BP), Palude Pantanello,

ICCINNO

ARDING

ARDING

NOVEMBRE

ARDING

ERGI

ARETO

RLANDO

ARGIOTTA

th th

th th

th th

th

th

th

Olea

CONCLUSIONS

breedingactivities are still documented at this time; , 1999HARDING

e

Environmental Aspects of Some Wetlands Along the Adriatic Coast

Journal of Coastal Research Special Issue 39, 2006,

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Coast Locality Coastallandform

Lab. Cod. Sample materials 14C age References

Gargano Varano littoral spit shell: Helix sp. 4720?±40 C

Torre di Sfinale dune shell: Pomatias 3620±14 C

Battaglia L.near closed

bay GX-30414AMS plant fragment 5180±50 PP

Battaglia L. lake-marsh GX-30413AMS plant fragment 990±40 PPTavoliere Coppa Nevigata lagoon GX-28576AMS shell: Cerastoderma glaucum 5580±40 PP

Coppa Nevigata lagoon GX-24886AMS charcoal 3090±40 B

Isola Olivi di Torelli lagoon GX-24885AMS shell: Cerastoderma glaucum 5470±40 A

Murgian Ariscianne marsh GX-28580AMS shell: Planorbis planorbis 7040± 0 PP

Ariscianne salt marsh GX-28578AMS shell: Bithynia leachi 6330±50 PP

Ariscianne marsh GX-28579AMS shell: Bithynia leachi 6160±40 PP

Ariscianne salt marsh GX-28581AMS shell: Ovatella myosotis 3850±40 PP

Ariscianne lagoon GX-27855 shell: Cerastoderma glaucum 2540±80 PP

Salento Alimini marsh GrN-17353 sediment 3675±55 D

Aliminifresh-

brackish lake GrN-17352 sediment 1765±50 D

Figure 4. TheAlimini Lakes area.

Table 1. Chronology of the Apulian Adriatic wetlands. Conventional C age are expressed in yr BP±1 . References: PP = presentpaper; A = et al., 2002; B = et al., 1999; C = and 2002; D = , 1999.

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near Vieste (occurrence of Early Neolithic pottery dating backto 7 -6 millennium BC; G , 1989) and the Salpi Lak(Early Neolithic cardial ware, 7th-6th millennium BC;C ., 2002).At Coppa Nevigata, on the northernedgeof the Salpi Lake, lagoonal environments are documented

th thRAVINA

ALDARA et alat

least between 5580 ± 40 uncal. BP and 3090 ± 40 uncal. BP(C 1999). At Palude Santa Maria, the formerBattaglia Lake, we found a brackish fauna after theconventional radiocarbon age 5180±50 BP. The Alimini Lakeslagoon is testified from Middle Neolithic, 5th millennium BC(H , 1999).

The sand body barring the Lesina Lake started to grow beforethe Late Neolithic (G , 1999a), while the spit thatgradually isolated the Varano Lake begun its formation beforethe Eneolithic - Bronze Age (G , 1999b). Recently, a Cage determination performed on sp. shells collected at thewestern end of the sand barrier closing the Varano Lake, gavethe conventional radiocarbon age of 4720 ± 40 BP(M and S , 2002). The isolation process ofLesina and Varano Lakes was likely accomplished during theRoman period.

The development of the aeolian deposits onto the isolatingridge at Sfinale lagoon (Gargano Promontory) started to occurbefore 3620 ± 14 BP (uncalibrated age; M andS , 2002).

During the evolution of theApulian lagoons and coastal lakesthe Holocene fluctuations of the sea level played an importantrole. For example inAlimini Lakes four phases of Holocene sealevel rise have been recognized on the basis of archaeological,pollen and geomorphologic data (M and F , 2000).

Two Holocene sea level high stands have been recognized inthe Palude di Ariscianne. In particular the first lagoondeveloped during the Early Neolithic, between the conventionalC ages 7040 ± 50 BP and 6130 ± 40 BP. The second lagoonal

episode occurred between the Bronze Age and Roman Period,during the time span 3850 ± 40 BP - 2540 ± 40 BP(uncalibrated ages).

The evolution of the lakes has been also conditioned byclimatic and anthropic factors.

As to the climatic factors B (2002) found thatduring the Middle-Late Neolithic the Salpi Lake became asabkha because of dry climate.

The size of several basins decreased because of theincreasing of the turbid rivers discharge. In such cases it is hardto distinguish the role played by man from natural (climatic)causes. An example is the alluviation that caused thesubdivision of the Salpi lagoon into two parts around 195-185BC. Nevertheless, it is well known that in that period thedeforestation of the Tavoliere and of the Daunian Mountainsbecame extensive (C , 2002). Similar processesdrove the Battaglia Lake to the extinction. In fact, a preliminarystudy, still in process, led us to suppose that the man madeclearance of the northern side of the Gargano headland(M , 1806-07) caused the release of a great quantity ofsediments that eventually infilled the basin.

However, the evolution of the Apulian coastal lakes has beengreatly conditioned by man. The human actions, particularlyintense between the 19 and the first half of the 20 century,aimed at a total reclamation. Many efforts were made to beat themalaria and to get new cultivable plots of land (A

, 1845; P , 1865). These interventions, carried outin all theApulian wetlands, were very important in the TavolierePlain, in the area around Lesina Lake and along the Salentocoast. Another intervention that has to be mentioned is thebuilding of the widest European saltworks in Margherita diSavoia. This plant is located in the same former Salpi Lake areaand, to enlarge the productive surface, some plots previouslyreclaimed by artificial infilling have been dug again.

Nowadays some projects aimed to the valorization of theApulian coastal wetlands. In fact, according to the RamsarAgreement (1971), the Margherita di Savoia saltworks and LeCesine have been declared protected areas. The wetlandsaround Lesina and Varano lakes, the Palude Frattarolo (theformer Salso Lake) and Palude Sfinale are part of the GarganoNational Park.

This study was made possible thanks to funding from theBari University Research Project “Genesi ed evoluzionegeomorfologica delle piane pugliesi e lucane”, led by Prof. F.Boenzi, and the “Dottorato di Ricerca in Geomorfologia eDinamicaAmbientale” of the University of Bari.

, C., 1845..

Napoli, Stamperia e Cartiere del Fibreno, 638 p.G.A., 1884.

. Roma,Tipografia Forzani e C., 491 p.

., and G.,1994. Evoluzione del lago di Salpi fra clima e interventiantropici.

(Potenza,Italia, 26-29 Novembre 1990), I, pp. 155-178.

and L., 1998.L'influenza delle variazioni climatiche e dei processistorico-sociali sull'evoluzione delle forme del rilievo delMezzogiorno.

(Bari-Matera, Italia, 24-27 Ottobre1996), pp. 1-30.

., and L.,2002. History of the Salpi lagoon-sabhka (ManfredoniaGulf, Italy). 14(2)2001, 93-104.

., and O., 1999. Primi risultati di unaricerca paleoambientale nell'area di Coppa Nevigata(Foggia).

(San Severo, Italia, 28-29Novembre 1998), pp.199-236.

M. and L., 1990. Evoluzionedell'ambiente olocenico nel basso Tavoliere di Puglia.

, 6(4), 47-66.M. and L., 1992a. Evoluzione ed

estinzione dell'antico lago di Salpi in Puglia. , 7(1),59-81.

M. and L., 1992b. Interpretazionepaleoclimatica di dati preistorici e storici relativiall'entroterra del Golfo di Manfredonia.

, 42 (1989), 197-207.M. and L., 1993. Ambienti aridi tipo

"sabkha" nei sedimenti olocenici della piana costiera fraManfredonia e Zapponeta (Foggia), 8(3), 73-82.

M. and L., 1996. Influenza del clima sulpaesaggio neolitico del basso Tavoliere di Puglia. In: Tinè, S.(ed.),

. Catanzaro, Italia:, Rubettino ed., II,pp. 559-568.

M. and L., 2002. L'ambiente fisico delleMurge durante il Neolitico. In: Radina, F.,

, Italia:Adda Ed., pp. 21-26.M.; L. and O., 2002. Evolution

of the Salpi Lagoon (Puglia, Italy)., Special Iusse No. 36, pp. 124-133.M.; L. and O., 2005.

L'ambiente físico nell'area dell'insediamento. In: Cassano,S., Manfredini, S.

. Foggia, Italia, Grenzi editore, pp. 25-58.M.; L., and G., 1994. L'area umida

alla foce del Candelaro: osservazioni paleoambientali eclimatiche.

, Collana del Progetto Strategico CNR(S. Maria di Salina,

Isole Eolie Messina, 28-30 Maggio 1990), pp. 211-234.M. and C.A., 1590-97. Map of the

ALDARA

ARDING

RAVINA

RAVINA

ASTRONUZZI ANS

ASTRONUZZIANS

AGRI OLLIERI

OENZI

ALDARA

ANICONE

FAN DERIVERA ARETO

AFAN DE RIVERA

ANGELONI,

BATTISTA, C.; CALDARA, M.; PENNETTA, L ZITO,

BOENZI, F.; CALDARA, M., PENNETTA,

BOENZI, F.; CALDARA, M.; MORESI, M PENNETTA,

CALDARA, M.; CAZZELLA, A.; FIORENTINO, G.; LOPEZ, R.;MAGRI, D SIMONE,

CALDARA, PENNETTA,

CALDARA, PENNETTA,

CALDARA, PENNETTA,

CALDARA, PENNETTA,

CALDARA, PENNETTA,

CALDARA, PENNETTA,

CALDARA, PENNETTA, SIMONE,

CALDARA, PENNETTA, SIMONE,

CALDARA, PENNETTA, ZITO,

CARTARO, STIGLIOLA,

et al.,

Helix

et al.

et al.

Del bonificamento del Lago diSalpi coordinato a quello della Pianura della Capitanata

Atti della Giunta per la inchiestaagraria e sulle condizioni della classe agricola

Atti III Workshop del Progetto Strategico CNR"Clima, Ambiente e Territorio nel Mezzogiorno"

Atti del Convegno. "Territorio e Società nelleAree Meridionali"

Italian Journal of Quaternary Science

Atti del 19° Convegno Nazionale sulla Preistoria,Protostoria e Storia della Daunia

Bonifica

Bonifica

Memorie dellaSocietà Geologica Italiana

Bonifica

Forme e tempi della neolitizzazione in Italiameridionale e in Sicilia

La Preistoriadella Puglia. Paesaggi, uomini e tradizioni di 8.000 anni fa.Bari

Journal of CoastalResearch

Il Villaggio Neolitico di MasseriaCandelaro

Atti II Workshop sul tema "Parchi naturali edaree protette" "ClimaAmbiente e Territorio nel Mezzogiorno"

14

14

th th

Ò

Ò

ACKNOWLEDGEMENTS

LITERATURE CITED

Boenzi et al.

Journal of Coastal Research Special Issue 39, 2006,

174

Page 6: Environmental Aspects Related to the Physical Evolution of ...siaiacad09.univali.br/ics2004/arquivos/31_boenzi.pdf · Journal of Coastal Research SI 39 170 - 175 ICS 2004 (Proceedings)

“Provincia di Capitanata”.C., 1978.

. Foggia,Amministrazione Provinciale di Capitanata, 249 p.

DELANO SMITH, Daunia vetus. Terra, vita emutamenti sulle coste del Tavoliere

DE PIPPO, T.; DONADIO, C PENNETTA,

DE POARDI

GIANFREDA, F.; MASTRONUZZI, G SANS ,

GRAVINA,

GRAVINA,CORSI,

GRAVINA,

GRAVINA,

GREUTER,

HARDING,

MAGRI, FOLLIERI,

MANICONE,

MARGIOTTA,

MARZOLLA,

MASTRONUZZI, SANS ,

MOLIN, MARGOTTINI,

NOVEMBRE,

ORLANDO,

PARETO,

PAZZINI,

PICCINNO,

SERGI,

SCHMIEDT,

., and M., 2001.Morphological evolution of Lésina Lagoon (SouthernAdriatic, Italy). ,24, 29-41.

, G.V., 1627. Nuova relazione del grande espaventoso terremoto successo nel Regno di Napoli, nellaprovincia di Puglia, in venerdì alli 30 luglio 1627. Roma.

., and P., 2001.Impact of historical tsunamis on a sandy coastal barrier: anexample from the northern Gargano coast, southern Italy.

, 1, 213-219.A., 1989. Vieste: note sul popolamento del territorio

nel Neolitico antico.(San Severo,

Italia, 2-3 Dicembre 1989), pp. 31-55.A., 1995. Torre Mileto fra preistoria e protostoria. In:P. (a cura di) , Italia:

Biblioteca minima di Capitanata 13. Quaderni del Sud,pp.21-52.

A., 1999a. Alcuni insediamenti rurali fra bassoFortore e Gargano settentrionale Note di topografia.

(San Severo, Italia, 6-8 Dicembre 1996)pp.185-206.

A., 1999b. La Daunia centro-occidentale. Frequenta-zione, ambiente e territorio fra neolitico finale, eneolitico edetà del Bronzo.

(San Severo,Italia, 26-29 Novembre 1998), pp. 83-141.

M., 1627.

. Roma.J.L., 1999.

Sheffield, England, Larix Books, 148 p.D. and M., 2000.

(Apulia, Italy). Abstracts /Quaternary International 63/64, 89.

M., 1806-07. . Tomi I-V. Napoli.Domenico Sangiacomo ed., 1037 p.

B., 1997.Lecce, Oistros, 61 p.

B., 1836.. Napoli

Reale Litografia Militare.G. and P., 2002. Holocene coastal dune

development and environmental changes in Apulia(southern Italy). , 150, 139-152.

D. and C., 1981. Il terremoto del 1627nella Capitanata settentrionale.

(Udine 12-14 Maggio 1981),pp. 251-279.

D. 1979. Vicende del popolamento etrasformazione del paesaggio.

,Adda Ed., 1, 13-32.D., 1885.

Lecce, Campanella Ed.R., 1865.

. Milano, Tipografia e Litografia degliingegneri, 270 p.

C., 1789.. Siena.A.F., 1978. Otranto, Laghi Alimini -

, 11, 122-132.G.M., 1957. Distribuzione delle dimore rurali sorte per

necessità di difesa nel Salento., (Bari, Italia, 23-29 Aprile 1957) 368-

376.G., 1973. Contributo della fotografia aerea alla

ricostruzione della antica laguna compresa fra Siponto eSalapia. , 26, 159-172.

Geografia Fisica e Dinamica Quaternaria

Natural Hazards and Earth Science System

Atti XI Convegno Nazionale sullaPreistoria, Protostoria e Storia della Daunia

Il Gargano e il mare. Foggia

AttiXVII Convegno Nazionale sulla Preistoria, Protostoria eStoria della Daunia

Atti XIX Convegno Nazionale sullaPreistoria, Protostoria e Storia della Daunia

Vero disegno dei luoghi nella Puglia qualisono rouinati dannegiati dal Spauentoso terremoto successoquest'anno 1627, à 30 di luglio, con mortalità grande comesifa coniettura passa 17 millia persone

Environmental change during theHolocene in south east Italy: an integratedgeomorphological and palynological investigation.

A Holocene pollen recordfrom Lago Alimini Piccolo

La Fisica Appula

Dinamica degli spazi costieri: LeCesine (Lecce).

Atlante corografico storico e statisticodel Regno delle Due Sicilie. Provincia di Capitanata

Sedimentary Geology

Atti Conv. Ann. CNR-PFG “Sismicità d'Italia, stato delle conoscenze e qualitàdella normativa sismica”

In: Storia della Puglia. Bari,Italia

Classificazione delle opere dibonificazione delle paludi e dei terreni paludosi dellaProvincia di Terra d'Otranto.

Sulle bonificazioni, risaie ed irrigazioni delRegno d'Italia. Relazione a S.E. il ministro di agricoltura,industria e commercio

Map of the “Parte occidentale del Regno diNapoli”

Stazionipreistoriche. Ricerche e Studi

Atti del XVII CongressoGeografico Italiano

Archivio Storico Pugliese

Ò Ò

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Journal of Coastal Research Special Issue 39, 2006,

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