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100 _aLeira, Manel
_951324
245 _aHolocene sea level and climate interactions on wet dune slack evolution in SW Portugal: A model for future scenarios?/
260 _bSage,
_c2019.
300 _a Vol 29, issue 1, 2019 : (26-44 p.).
520 _aWe examine the Holocene environmental changes in a wet dune slack of the Portuguese coast, Poço do Barbarroxa de Baixo. Lithology, organic matter, biological proxies and high-resolution chronology provide estimations of sediment accumulation rates and changes in environmental conditions in relation to sea-level change and climate variability during the Holocene. Results show that the wet dune slack was formed 7.5 cal. ka BP, contemporaneous with the last stages of the rapid sea-level rise. This depositional environment formed under frequent freshwater flooding and water ponding that allowed the development and post-mortem accumulation of abundant plant remains. The wetland evolved into mostly palustrine conditions over the next 2000 years, until a phase of stabilization in relative sea-level rise, when sedimentation rates slowed down to 0.04 mm yr−1, between 5.3 and 2.5 cal. ka BP. Later, about 0.8 cal. ka BP, high-energy events, likely due to enhanced storminess and more frequent onshore winds, caused the collapse of the foredune above the wetlands’ seaward margin. The delicate balance between hydrology (controlled by sea-level rise and climate change), sediment supply and storminess modulates the habitat’s resilience and ecological stability. This underpins the relevance of integrating past records in coastal wet dune slacks management in a scenario of constant adaptation processes.
650 _adiatoms,
_951325
650 _ageochemistry,
_951326
650 _a Holocene,
_950806
650 _apeat,
_951327
650 _asedimentology,
_951328
650 _awet dune slacks
_951329
700 _aFreitas, Maria C
_951330
700 _aFerreira, Tania
_951331
700 _aCruces, Anabela
_951332
700 _aConnor, Simon
_951333
700 _a Andrade, Cesar
_951334
700 _aLopes, Vera
_951335
700 _aBao, Roberto
_951336
773 0 _012756
_916504
_dLondon: Sage Publication Ltd, 2019.
_tHolocene/
_x09596836
856 _uhttps://doi.org/10.1177/0959683618804633
942 _2ddc
_cART
999 _c12759
_d12759