Isoetes fluitans sp. nov.: the identity of Spanish plants of ‘I. longissimum’

Romero, M. I.; Vázquez, Javier Amigó; Ramil, P.

doi:10.1111/j.1095-8339.2004.00315.x

Cited by 10 publications

(5 citation statements)

References 10 publications

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“…Thus, these pollen spectra suggest the development of a relatively moist but not permanently inundated environment. In fact, Isoetes is an amphibious plant which takes advantage of declining water levels to reproduce sexually (Romero et al, 2004). Thus, its high values in this zone may indicate that the water-table was affected by seasonal oscillations.…”

Section: Ciesmentioning

confidence: 99%

Holocene evolution of a rock‐bounded barrier‐lagoon system, Cíes Islands, northwest Iberia

Sobrino

Alejo

Pérez‐Arlucea

2009

Earth Surf Processes Landf

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Coastal geomorphology results from the combined effects of contemporary dynamics, sea-level rise and the inherited geological framework, yet the relative importance of these driving mechanisms may change throughout the evolutionary history of coastal deposits. In this contribution, we analyse the depositional history of the Cíes Islands barrier-lagoon system, based on lithofacies, radiocarbon ages, and pollen analysis. Our results reveal a sedimentary sequence that provides evidence for striking changes in the dynamical functioning of this complex since the mid-Holocene. The sedimentary sequence commenced about 7700 cal years BP by fresh-water ponding of an upland depression located about 4 m below present mean sea-level. Freshwater ponds were infilled by aeolian sediments following a gradual lowering of the water-table 4000 cal years BP. Post-3600 cal years BP sea-level rise allowed water oscillations to reach the elevation of the bedrock causing the inundation of fresh-water ponds and subsequent lagoonal and marine sedimentation. Subsequently, landward and upward migration of a sand-barrier led to overwash and deposition of sand in the newly formed lagoon.The resultant sedimentary sequence suggests that climatic conditions played an important role controlling the sedimentation regime during the entire history of the basin; changing water-table levels during early stages of evolution and increasing storminess during more recent times. In addition, background sea-level rise related to the Holocene transgression was a key factor in controlling the evolution of the system, yet its influence depended to an extent on the relative elevation of the bedrock topography. Figure 2. Aerial photographs showing the barrier-lagoon system (a) from the south, and (b) from the north to the south of the barrier.

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Section: Ciesmentioning

confidence: 99%

Holocene evolution of a rock‐bounded barrier‐lagoon system, Cíes Islands, northwest Iberia

Sobrino

Alejo

Pérez‐Arlucea

2009

Earth Surf Processes Landf

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“…In the case of a hypothetical disappearance of Isoetes longissima, the main species of a rheophilous community (Apio inundati -Isoetetum longissimi, Isoeto-Litorelletea class) growing in the acid water of certain rivers in NW Galicia (Romero et al 2004), the community could be restored by reintroducing the species in its natural environment because there are resources preserved ex situ.…”

Section: Resultsmentioning

confidence: 99%

Risk of extinction of plant communities: Risk and assessment categories

Izco

2015

Plant Biosystems - An International Journal Dealing with all As

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There are many proposals for the assessment of plant communities, based on different criteria, but very few proposals for categorization of the risk of extinction of plant communities (syntaxa). In this paper, concepts related to extent of occurence (EOO), area of occupancy (AOO), extinction and regeneration of plant communities are defined. Also, we propose and define several ranks of extinction risk based on quantitative criteria of the EOO, AOO and processes of decline. The proposals are global, for application to any type of cormophytic vegetation, without geographical restrictions. To check the adequacy of the proposed ranks and its thresholds, the method has been applied to the vegetation of the Iberian Peninsula based on the EOO (122 plant communities) and the AOO (2224 plant communities).

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“…Por lo selectivo del medio, lo cambiante de sus condiciones bióticas y los riesgos de perturbaciones que soportan, las especies de flora que pueden albergar han sido y son de gran importancia, así diversos esfuerzos de prospección en estos ambientes han redundado en algunas publicaciones que tratan estas plantas especialmente raras o escasas en nuestro país (ROMERO et al 2004a(ROMERO et al , 2004b(ROMERO et al , 2004cAMIGO & ROMERO 2005). Sin embargo, estos sistemas acuáticos continentales son extremadamente frágiles y por tanto muy vulnerables especialmente en relación a los organismos exóticos que provocan fuertes impactos en el medio (RODRÍGUEZ-MERINO et al 2017).…”

Section: Introductionunclassified

Nuevas aportaciones a la flora vascular de humedales de Galicia

Buján

Vázquez

2023

NACC

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Presentamos datos de interés corológico sobre algunas especies de flora vascular no conocidas o que cuentan con pocos registros en los humedales de Galicia. Se incluyen dos novedades para la flora gallega: Ludwigia peploides subsp. montevidensis y Sicyos angulatus, y otras novedades provinciales como Myosotis debilis y Potamogeton pectinatus; las demás especies que se incluyen o son muy escasas, o no hay referencias bibliográficas de su presencia en el territorio en el último medio siglo.

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Isoetes fluitans sp. nov.: the identity of Spanish plants of ‘I. longissimum’

Cited by 10 publications

References 10 publications

Holocene evolution of a rock‐bounded barrier‐lagoon system, Cíes Islands, northwest Iberia

Holocene evolution of a rock‐bounded barrier‐lagoon system, Cíes Islands, northwest Iberia

Risk of extinction of plant communities: Risk and assessment categories

Nuevas aportaciones a la flora vascular de humedales de Galicia

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