Primary production and decomposition ofSarcocornia fruticosa (L.) scott andPhragmites australis Trin. Ex Steudel in the Po Delta, Italy

Scarton, Francesco; Day, John W.; Rismondo, Andrea

doi:10.1007/bf02695977

Cited by 53 publications

(43 citation statements)

References 26 publications

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“…Experimental inputs of high levels of inorganic nutrients alone may stimulate organic matter decomposition to a greater degree than inputs that include other compounds. However, decomposition was not significantly greater at the riverine sites of our study (Ibáñez et al 1999;Curcó et al 2002;Pont et al 2002;Scarton et al 2002). These questions remain to be fully investigated, but there is no doubt that sites with high riverine inputs in our study had much higher accretion rates.…”

Section: Resultscontrasting

confidence: 60%

“…Three replicate 0.25-m 2 marker horizons were randomly placed at each station. Hensel et al 1998Hensel et al , 1999Scarton et al 1998Scarton et al , 2002Day et al 1999;Ibáñez et al 1999Ibáñez et al , 2010Curcó et al 2002;Pont et al 2002 Wetland surface elevation changes were measured with a surface elevation table (SET) as described by Boumans and Day (1994) and Cahoon et al (2000), with two replicate SET stations established at each site. We also compiled additional data on above-and belowground biomass, tidal range, and conductivity from the literature for the different sites (Tables 2, 3, and 4).…”

Section: Methodsmentioning

confidence: 99%

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Sustainability of Mediterranean Deltaic and Lagoon Wetlands with Sea-Level Rise: The Importance of River Input

Day

Ibáñez

Scarton³

et al. 2011

Estuaries and Coasts

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We report on a decadal trend of accretionary dynamics in the wetlands of several northwestern Mediterranean deltas and a lagoon system, all of them with high rates of wetland loss. Wetland vertical accretion and surface elevation change were measured at 55 riverine, marine, and impounded sites in four coastal systems: the Ebro delta, Spain; the Rhône delta, France; and the Po delta and Venice Lagoon, Italy. Vertical accretion and elevation change ranged between 0 and 25 mm year −1 and were strongly correlated. The highest rates of elevation gain occurred at riverine sites where vertical accretion was highest. We conclude that areas with high sediment input, mainly riverine, are the only ones likely to survive accelerated sea-level rise, especially if recent higher estimates of 1 m or more in the twenty-first century prove to be accurate. This is the first study where the importance of river input on wetland survival has been demonstrated at a decadal time scale over a broad geographical area.

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Section: Resultscontrasting

confidence: 60%

Section: Methodsmentioning

confidence: 99%

Sustainability of Mediterranean Deltaic and Lagoon Wetlands with Sea-Level Rise: The Importance of River Input

Day

Ibáñez

Scarton³

et al. 2011

Estuaries and Coasts

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“…The values obtained for AM (692-1,012 g m -2 yr -1 ), although higher than those (189-835 g m -2 yr -1 ) reported by Curcó et al (2002) for the same species in Spain, are similar to those (678-1,123 g m -2 yr -1 ) obtained by Ibàñez et al (1999) and Scarton et al (2002) for Arthrocnemum fruticosum, in France and Italy. NAPP values estimated for SD (2,603-2,923 g m -2 yr -1 ) are close to that (2,391 g m -2 yr -1 ) reported by Costa and Peixoto (2004) for the same species and in the range (1,300-3,700 g m -2 yr -1 ) reported by Gallagher et al (1980) for S. alterniflora.…”

Section: Napp and Turnover Ratessupporting

confidence: 89%

Comparison of Biomass and Nutrient Dynamics Between an Invasive and a Native Species in a Mediterranean Saltmarsh

et al. 2010

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Two saltmarsh species, the native Arthrocnemum macrostachyum (AM) and the invasive Spartina densiflora (SD), were compared in terms of monthly variation of above and belowground biomass, and nutrient (N, P, K, Ca, Mg, Mn) concentrations, over 1 year, in Castro Marim saltmarsh, Portugal. Net aboveground primary productivity was also estimated by two different methods. Above and belowground biomass were higher in SD than in AM and there were distinct monthly variations in the two species. Maximum relative growth rate was observed in the October/January period for SD (4.92±0.36 mg g-1 day-1) and in April/July for AM (3.37±1.26 mg g-1 day-1). Whatever the method used, net aboveground primary productivity was higher in SD (2,603 and 2,923 g m-2 yr-1, respectively by the Smalley and the Wiegert and Evans method) than in AM (692 and 1,012 g m-2 yr-1, respectively). The turnover rate for aboveground live biomass of AM was half the value of SD (0.8 yr-1 and 1.7 yr-1, respectively). The N/P ratio in photosynthetic active components and belowground biomass of AM (11 and 13) was higher than in those of SD (7 and 10). Concentrations of K, Ca and Mg in photosynthetic tissues of SD were lower than in AM. Differences observed between study species suggest that S. densiflora has better ability to use resources and to compete with native species.

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“…The destructive sampling method is accurate but time consuming and not always applicable (e.g., in protected areas - Gratani et al 1980). Most used methods are based on allometric equations relating AGB to its proxies, such as the shrub height (Gratani et al 1980, Sternberg & Shoshany 2001, Bianchi et al 2002, Coomes et al 2002, Scarton et al 2002, Corona et al 2011b or the crown diameter (Gratani et al 1980, Lledò et al 1992, Quideau et al 1998, Sternberg & Shoshany 2001, Coomes et al 2002, Ogaya et al 2003, De Luis et al 2004, Saglam et al 2008, Corona et al 2011a). Gratani et al (1980) estimated the apparent volume (AV) from the crown diameter and height measurements, while Catarino et al (1982) used plant height and stem diameter measurements.…”

Section: Introductionmentioning

confidence: 99%

Methods for biomass stock estimation in Mediterranean maquis systems

Sîrca¹,

Caddeo²,

Spano³

et al. 2017

iForest

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As a result of Kyoto Protocol agreements, the scientific community increased its efforts to enhance the availability of biomass and organic carbon stock data in forest ecosystems. Nevertheless, a considerable data shortage has been recognized in estimating the stock of above-ground biomass (AGB) in Mediterranean maquis systems. This work aims at contributing in addressing such shortage by testing quick and non-disruptive methods to estimate the AGB stock in maquis species. Two methodologies were tested in three widespread sclerophyllous evergreen species (Pistacia lentiscus, Euphorbia dendroides, and Cystus monspeliensis). Both methodologies were based on the estimation of the apparent volume (AV): the first one assumed the shrub shape (or canopy) to be similar to a regular tridimensional solid, while the second method was based on plant digital images analysis. Results showed some differences in AV values estimated through the two methodologies, although a high correlation was found between them (R 2 = 0.92-0.98) and with the AGB weight obtained from plant samples (R 2 = 0.89-0.96). As a consequence, the shrubs apparent density values (i.e., weight/AV) vary depending on the method used for AV estimation. This should be taken into account when AV is used for AGB estimation. Besides, measurements of above-ground biomass were carried out to characterize the studied area. Results showed high variability in AGB values, ranging from 7.04 to 48.05 Mg ha -1 of dry matter.

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Primary production and decomposition ofSarcocornia fruticosa (L.) scott andPhragmites australis Trin. Ex Steudel in the Po Delta, Italy

Cited by 53 publications

References 26 publications

Sustainability of Mediterranean Deltaic and Lagoon Wetlands with Sea-Level Rise: The Importance of River Input

Sustainability of Mediterranean Deltaic and Lagoon Wetlands with Sea-Level Rise: The Importance of River Input

Comparison of Biomass and Nutrient Dynamics Between an Invasive and a Native Species in a Mediterranean Saltmarsh

Methods for biomass stock estimation in Mediterranean maquis systems

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