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Publication Type J
Authors de Carvalho, R. C., E. Feijao, I. Duarte, V. Pinto, M. Silva, A. R. Matos, A. B. da Silva, I. Cacador, P. Reis-Santos, V. F. Fonseca and B. Duarte
Title Ecoengineering Solutions for the Impairment of Spreading and Growth of Invasive Spartina patens in Mediterranean Salt Marshes
Source Frontiers in Marine Science
Language English
Author Keywords ecological restoration invasive species salt marsh remote sensing halophytes photosystem-ii efficiency xanthophyll cycle smooth cordgrass chemical control c-4 grasses willapa bay plants responses stress alterniflora Environmental Sciences & Ecology Marine & Freshwater Biology
Abstract The invasion of natural communities by non-indigenous species represents one of the most serious threats to biodiversity. Understanding the ecophysiology of invasive species can provide insights into potential physiological handicaps relative to native species. By doing so, we can leverage the development of ecoengineering solutions for the removal of non-indigenous species, preferably using non-chemical methods. Spartina patens is a known invasive species of cordgrass aggressively proliferating in Mediterranean salt marshes, producing impenetrable monospecific stands. As its occurrence is delimited by the upper high tide water level, we hypothesized that S. patens is intolerant to waterlogging. Therefore, we developed a field experiment where strands of S. patens were kept waterlogged over the entire tidal cycle for 30 days. At the end of the experimental period, plants in the trial plots exhibited severe stress symptoms at different physiological levels compared with control plots (no intervention). At the photobiological level, intervened plants exhibited lower efficiency in producing chemical energy from light, whilst at the biochemical level waterlogging impaired the antioxidant system and increased lipid peroxidation products. Furthermore, the application of chlorophyll a pulse amplitude modulated (PAM) fluorometry, a non-invasive technique, allowed us to evaluate the effectiveness of the implemented measures, being the tool that provided the best separation between the control and intervened population. Considering the physiological traits observed here, ecoengineering solutions based on increased waterlogging of S. patens stands, can be a low-cost and efficient measure to reduce the spreading and growth of this invasive species in the Mediterranean and other salt marshes worldwide with little disturbance.

Author Address [Cruz de Carvalho, Ricardo; Feijao, Eduardo; Duarte, Irina; Pinto, Vanessa; Silva, Marisa; Cacador, Isabel; Reis-Santos, Patrick; Fonseca, Vanessa F.; Duarte, Bernardo] Univ Lisbon, MARE Marine & Environm Sci Ctr, Fac Ciencias, Lisbon, Portugal. [Cruz de Carvalho, Ricardo] Univ Lisbon, CE3c Ctr Ecol Evolut & Environm Changes, Fac Ciencias, Lisbon, Portugal. [Matos, Ana Rita; da Silva, Anabela Bernardes; Cacador, Isabel; Duarte, Bernardo] Univ Lisbon, Dept Biol Vegetal, Fac Ciencias, Lisbon, Portugal. [Matos, Ana Rita; da Silva, Anabela Bernardes] Univ Lisbon, Biosyst & Appl Sci Inst, Fac Ciencias, Lisbon, Portugal. [Reis-Santos, Patrick] Univ Adelaide, Sch Biol Sci, Southern Seas Ecol Labs, Adelaide, SA, Australia. [Fonseca, Vanessa F.] Univ Lisbon, Dept Biol Anim, Fac Ciencias, Lisbon, Portugal. de Carvalho, RC (corresponding author), Univ Lisbon, MARE Marine & Environm Sci Ctr, Fac Ciencias, Lisbon, Portugal.; de Carvalho, RC (corresponding author), Univ Lisbon, CE3c Ctr Ecol Evolut & Environm Changes, Fac Ciencias, Lisbon, Portugal. rfcruz@fc.ul.pt
29-Character Source Abbreviation Front. Mar. Sci.
Publication Date Aug
Year Published 2021
Volume 8
Beginning Page 18
Digital Object Identifier (DOI) 10.3389/fmars.2021.699528
Unique Article Identifier WOS:000696676200001

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