Modelling growth of Ruppia cirrhosa

Calado, Gonçalo; Duarte, Pedro

doi:10.1016/s0304-3770(00)00104-2

Cited by 42 publications

(25 citation statements)

References 19 publications

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“…Macrophyte descriptors also differ between the two groups of ponds with values higher in B than in A ponds. Biomass outcomes were comparable with values registered previously (Pérez & Camp 1986;Menéndez & Comín 1989;Calado & Duarte 2000;Menéndez 2002;Pergent et al 2006;Casagranda & Boudouresque 2007), but were higher than values reported in Ballester (1985) and lower than values reported in Obrador et al (2007) and Obrador and Pretus (2010).…”

Section: Plant Parameterssupporting

confidence: 86%

“…Species that belong to the genus Ruppia L. are common in shallow systems where they often form dense and monospecific beds (Verhoeven 1979;Calado & Duarte 2000;Menéndez 2002;Malea et al 2004;Mannino & Sarà 2006;Pergent et al 2006;Nikolić et al 2013). Ruppia plants show annual/ perennial growth cycles, according to the permanency of the water body (Verhoeven 1979;Kantrud 1991;Malea et al 2004).…”

Section: Introductionmentioning

confidence: 99%

“…Calado & Duarte 2000;Menéndez 2002;Gesti et al 2005;Mannino & Sarà 2006;Pergent et al 2006;Casagranda & Boudouresque 2007;Obrador et al 2007;Shili et al 2007;Obrador & Pretus 2010). Many studies have shown the Ruppia capacity to adopt a different growth cycle (annual or perennial) in response to the permanency of the water body (Verhoeven 1979;Brock 1982;Kantrud 1991;Gesti 2000;Malea et al 2004), suggesting a considerable plasticity in the allocation of resources to seed production or vegetative growth.…”

Section: Introductionmentioning

confidence: 99%

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Differences in the growth cycle ofRuppia cirrhosa(Petagna) Grande in a Mediterranean shallow system

Mannino

Graziano

2014

Plant Biosystems - An International Journal Dealing with all As

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Ruppia cirrhosa growth cycle was analysed in a southern Mediterranean shallow system throughout 1 year. We examined the temporal variation in R. cirrhosa cover percentage, shoot density, biomass, leaf length, no. flowers m 22 and no. fruits m 22 in two groups of pond characterized by differences in some environmental parameters. Ponds were comparable for salinity and temperature but they differed for other environmental parameters such as water depth, level of suspended organic matter and chlorophyll a (CHL a). Biological parameter values were higher in B ponds, characterized by lower values of water depth, suspended organic matter and CHL a. A seasonal trend for all considered biological parameters in both typologies of ponds with maximum values in summer was also observed. Moreover, differences were observed between the two groups of ponds in relation to the reproductive strategy adopted by the plant, with populations subjected to a higher organic input and a lower water depth displaying an annual cycle. Results showed how R. cirrhosa is able to resist and to adapt to variations in environmental conditions because of the plasticity and flexibility in the growth cycle and in the reproductive effort.

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Section: Plant Parameterssupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Differences in the growth cycle ofRuppia cirrhosa(Petagna) Grande in a Mediterranean shallow system

Mannino

Graziano

2014

Plant Biosystems - An International Journal Dealing with all As

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“…The constant or even decreasing DIN, which is synchronous with the increase in SRP, may be due to a fast incorporation of nitrogen into phytoplankton or due to denitrification beneath the dense littoral meadows. Thus, anoxic conditions near the bottom are expected to be common in the littoral areas with large amounts of biomass (Calado and Duarte, 2000). However, the system did not fall into dystrophy as no hypoxia was observed in the open water (the oxygen saturation concentration in the open waters never decreased below 70%; Table 1).…”

Section: Discussionmentioning

confidence: 98%

Spatial distribution and biomass of aquatic rooted macrophytes and their relevance in the metabolism of a Mediterranean coastal lagoon

2007

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SUMMARY: This work aims to characterise the current autotrophic compartment of the Albufera des Grau coastal lagoon (Menorca, Balearic Islands) and to assess the relationship between the submerged macrophytes and the limnological parameters of the lagoon. During the study period the submerged vegetation was dominated by the macrophyte Ruppia cirrhosa, which formed dense extensive meadows covering 79% of the surface. Another macrophyte species, Potamogeton pectinatus, was also observed but only forming small stands near the rushing streams. Macroalgae were only occasionally observed. Macrophyte biomass showed a clear seasonal trend, with maximum values in July. The biomass of R. cirrhosa achieved 1760 g DW m -2 , the highest biomass ever reported for this species in the literature. The seasonal production-decomposition cycle of the macrophyte meadows appears to drive the nutrient dynamics and carbon fluxes in the lagoon. Despite the significant biomass accumulation and the absence of a washout of nutrients and organic matter to the sea, the lagoon did not experience a dystrophic collapse. These results indicate that internal metabolism is more important than exchange processes in the lagoon.Keywords: coastal lagoons, macrophytes, Ruppia cirrhosa, Western Mediterranean. RESUMEN: DISTRIBUCIÓN ESPACIAL Y BIOMASA DE LOS MACRÓFITOS SUMERGIDOS Y SU RELEVANCIA EN EL METABOLISMO DEUNA LAGUNA LITORAL MEDITERRÁNEA. -El presente estudio pretende caracterizar el componente autotrófico de la laguna litoral de s'Albufera des Grau (Menorca, Islas Baleares) y determinar la relación entre los macrófitos acuáticos y la dinámica de los principales parámetros limnológicos del sistema. Durante el periodo estudiado, la vegetación sumergida estuvo dominada por el macrófito Ruppia cirrhosa, que formaba extensas praderas en toda la laguna. También se observó otra especie de macrófito, Potamogeton pectinatus, pero sólo formando pequeñas formaciones cerca de la entrada de los torrentes a la laguna. La biomasa de macrófitos mostró un claro ciclo estacional, con los valores máximos centrados en verano. La biomasa de R. cirrhosa alcanzó 1760 g DW m -2 , que supone el valor más alto de biomasa descrito para esta especie en la literatura. El ciclo estacional de producción-descomposición de las praderas de macrófitos parece ser el responsable de la diná-mica de nutrientes y de los flujos de carbono en la laguna. A pesar de las elevadas biomasas acumuladas y de la ausencia de un lavado de nutrientes y materia orgánica hacia el mar, la laguna no mostró un colapso distrófico, sugiriendo la importancia del metabolismo interno de la laguna por encima de los procesos de intercambio con el mar.Palabras clave: lagunas litorales, macrófitos, Ruppia cirrhosa, Mediterráneo Occidental.

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“…These models can be (a) non-spatial (Collins and Wlosinski, 1989;Scheffer et al, 1993;van Dijk and Janse, 1993;Davis and McDonnell, 1997;Hootsmans, 1999;Asaeda and Karunaratne, 2000;Calado and Duarte, 2000;Best et al, 2001) or (b) spatial (Wortmann et al, 1997;Van Nes et al, 2003).…”

Section: Comparison With Other Modelsmentioning

confidence: 99%

Modelling the clonal growth of the rhizomatous macrophyte Potamogeton perfoliatus

Wolfer

Nes

Straile

2006

Ecological Modelling

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Macrophytes play a crucial role in the functioning of lake ecosystems. Until now most macrophyte models neglected the fact that the majority of macrophyte species expand clonally during the growing season. Inclusion of a detailed description of clonal growth in models can facilitate our understanding of space occupation and patch expansion and predict future macrophyte development. "CLOMO" is an individual-based model which includes a detailed, spatially explicit description of rhizome formation and clone expansion as well as a realistic description of photosynthesis including light limitation and temperature. The model also accounts for transfers of energy or resources between different parts of the clone ("clonal integration").Although the clonal growth of macrophytes is complex and poorly known, the first model results for the macrophyte species Potamogeton perfoliatus were promising and compared well with the field data. The model can produce growth networks very similar to those found in the field. A Monte Carlo sensitivity analysis showed systematically which parameters have the largest effect on the architecture and expansion of the clones.The application of the model provided new insights into growth dynamics and patch development: (1) the model showed that a lack of branching will lead to the extinction of the clone after a certain number of years. This is due to the fact that the reproductive organs (turions) are formed at the end of a branch and even a small turion mortality will cause a reduction in surviving plant numbers; (2) the growth of rhizome axes relative to those in the previous year determines the patch density and patch expansion rate. Reversing rhizomes lead to compact patch growth whereas continuing rhizomes lead to loose aggregates.

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Modelling growth of Ruppia cirrhosa

Cited by 42 publications

References 19 publications

Differences in the growth cycle ofRuppia cirrhosa(Petagna) Grande in a Mediterranean shallow system

Differences in the growth cycle ofRuppia cirrhosa(Petagna) Grande in a Mediterranean shallow system

Spatial distribution and biomass of aquatic rooted macrophytes and their relevance in the metabolism of a Mediterranean coastal lagoon

Modelling the clonal growth of the rhizomatous macrophyte Potamogeton perfoliatus

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