Assessing the potential of Albufera de València Lagoon sediments for the restoration of charophyte meadows

Rodrigo, María A.; Alonso-Guillén, Jose L.

doi:10.1016/j.ecoleng.2013.09.041

Cited by 17 publications

(9 citation statements)

References 42 publications

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“…Through sexual reproduction, charophytes produce dormant structurescalled oosporesthat can remain viable in the sediment for more than 40 years (Rodrigo et al, 2010;Rodrigo & Alonso-Guillén, 2013). Oospores are fundamental for their genetic diversity (Eckert et al, 2016), the establishment of new populations by means of waterfowl dispersal (Brochet, Guillemain, Fritz, Gauthier-Clerc, & Green, 2010), and the preservation of populations and species after droughts or other ecosystem disturbances (Rodrigo & Alonso-Guillén, 2013). Therefore, understanding the environmental cues that determine the production of charophyte propagules is crucial for the conservation of many species and the future of some vulnerable habitats.…”

Section: Introductionmentioning

confidence: 99%

Persistence of submerged macrophytes in a drying world: Unravelling the timing and the environmental drivers to produce drought‐resistant propagules

Calero

Morellato

Rodrigo

2018

Aquatic Conservation

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Under a warming scenario many permanent inland water bodies in the Mediterranean region have become temporary ones, so the persistence of submerged macrophytes depends on the timely production of drought‐resistant propagules. Phenological research measures the timing of ecological processes and allows the consequences of disturbances such as climate change to be evaluated. Among macrophytes, the charophytes are widely distributed benthic macroalgae and are particularly sensitive to environmental variations. The systems in which they live constitute valuable, threatened, and protected habitats (European Habitats Directive code 3140). This study established a methodological basis for determining which environmental drivers trigger the sexual reproductive phenology of charophytes. For the first time, circular statistics were applied to describe and compare seasonal patterns for submerged macrophytes. Over a period of 2 years, three charophyte species growing in two Mediterranean brackish ponds were monitored. Most of the sexual reproduction occurred during spring and summer, including the production of drought‐resistant propagules, before the harshest conditions arrived. Each species showed a distinctive phenological pattern, according to specific breeding systems, life cycles, and environmental tolerances and requirements. Deeper conditions and higher salinities delayed reproduction. Different rainfall intensities in autumn produced distinctions between years, as stronger rainfall reduced the salinity stress and stimulated the reproduction of plants. Interacting factors act as cues for charophyte reproduction and cause antagonistic effects on propagule production. Among them, the heat required for each phenophase peak is essential for understanding the phenology of a population and for predicting its long‐term persistence. Charophytes appear to be good candidates for tracking climate change in shallow ecosystems. Further phenological studies should consider more species, populations, and long‐term observations in order to predict climate‐change effects on water bodies, and to develop effective plans for management and conservation. Circular statistics is a potential tool for analysing phenology in the context of global warming, as well as for many other conservation issues.

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Section: Introductionmentioning

confidence: 99%

Persistence of submerged macrophytes in a drying world: Unravelling the timing and the environmental drivers to produce drought‐resistant propagules

Calero

Morellato

Rodrigo

2018

Aquatic Conservation

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“…Even under favorable conditions, (re)establishment of macrophytes may fail because of lack of diaspores. Diaspore banks should therefore be investigated before lake restorations to estimate the potential for re-establishments (Rodrigo and Alonso-Guillen 2013 [ 121 ], Hussner et al, 2014 [ 79 ], Holzhausen et al, 2017 [ 36 ]). A shift of macrophyte species composition is often observed after successful lake restorations and is explained by the large differences in numbers and longevity of diaspores among these species (Bakker et al, 2013 [ 12 ]).…”

Section: (Re)establishment Of Submerged Vegetationmentioning

confidence: 99%

Re-Establishment Techniques and Transplantations of Charophytes to Support Threatened Species

Blindow

Carlsson

Weyer³

2021

Plants

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Re-establishment of submerged macrophytes and especially charophyte vegetation is a common aim in lake management. If revegetation does not happen spontaneously, transplantations may be a suitable option. Only rarely have transplantations been used as a tool to support threatened submerged macrophytes and, to a much lesser extent, charophytes. Such actions have to consider species-specific life strategies. K-strategists mainly inhabit permanent habitats, are perennial, have low fertility and poor dispersal ability, but are strong competitors and often form dense vegetation. R-strategists are annual species, inhabit shallow water and/or temporary habitats, and are richly fertile. They disperse easily but are weak competitors. While K-strategists easily can be planted as green biomass taken from another site, rare R-strategists often must be reproduced in cultures before they can be planted on-site. In Sweden, several charophyte species are extremely rare and fail to (re)establish, though apparently suitable habitats are available. Limited dispersal and/or lack of diaspore reservoirs are probable explanations. Transplantations are planned to secure the occurrences of these species in the country. This contribution reviews the knowledge on life forms, dispersal, establishment, and transplantations of submerged macrophytes with focus on charophytes and gives recommendations for the Swedish project.

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“…Based on information about sedimentation rates the 88 cm long sediment cores represent approximately 340 years (Rodrigo and Alonso-Guillén, 2013). In the lowest part of the core (78-88 cm) where sediments are over 300 years old, different Chara species and Lamprothamnium papulosum showed a high amount of apparently viable oospores (Rodrigo et al, 2010;Rodrigo and Alonso-Guillén, 2013). In this study the authors could not completely exclude the possibility that the oospores were younger and were buried in deeper and older sediments due to sediment disturbance by animals or water movements.…”

Section: Discussionmentioning

confidence: 89%

“…Pb datings suggest an age of 68 ± 15 years at a depth of 40 cm. Based on information about sedimentation rates the 88 cm long sediment cores represent approximately 340 years (Rodrigo and Alonso-Guillén, 2013). In the lowest part of the core (78-88 cm) where sediments are over 300 years old, different Chara species and Lamprothamnium papulosum showed a high amount of apparently viable oospores (Rodrigo et al, 2010;Rodrigo and Alonso-Guillén, 2013).…”

Section: Discussionmentioning

confidence: 99%

Long-lived banks of oospores in lake sediments from the Trans-Urals (Russia) indicated by germination in over 300 years old radiocarbon dated sediments

2014

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Assessing the potential of Albufera de València Lagoon sediments for the restoration of charophyte meadows

Cited by 17 publications

References 42 publications

Persistence of submerged macrophytes in a drying world: Unravelling the timing and the environmental drivers to produce drought‐resistant propagules

Persistence of submerged macrophytes in a drying world: Unravelling the timing and the environmental drivers to produce drought‐resistant propagules

Re-Establishment Techniques and Transplantations of Charophytes to Support Threatened Species

Long-lived banks of oospores in lake sediments from the Trans-Urals (Russia) indicated by germination in over 300 years old radiocarbon dated sediments

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