Search results for "Marsh"
showing 10 items of 98 documents
Malaria, poverty and medical treatment in the district of Agrigento (1830–1836)
1998
It is kown that the destruction of woods has been the reason of the beginning of"malaria". In the Middle Age there was a lot of forests in Sicily. In the province of Agrigento malaria was already kown especially in Cammarata in 1141; in the area of Burgic in 1172; in Licata in 1398 adin the south of Girgenti (Girgenti was the ancient name of Agrigento) in 1253. Huge expenses of water determined, between 1256 and 1379, the fight against malaria. In the XV and XV1 centuries the destruction of the Sicilian forests could be said systematically begun by the landowners, that had destined the land to the production of wheat. Then, the area of Agrigento was the place where the surviving vegetation …
Ptyctima (Acari, Oribatida) in various habitats in Finland
2010
The oribatid species of the taxon Ptyctima were studied in eight habitat types (four forests, three bogs, and one shore). Altogether 19 species were found. The highest number of species (15) was found in marsh forests in southern Finland, and the lowest number (3) in eutrophic fens in northern Finland. Atropacarus striculus was the most common and abundant species in Finland. It was found in each habitat explored, especially abundant on shores, in marsh forests, and pine bogs. Phthiracarus longulus, P. boresetosus, and Steganacarus carinatus occurred in abundance in coniferous forests, especially in the southern and central parts of the country, whereas Rhysotritia ardua was found there onl…
Study of the morphological affinity between two species of benthic foraminifera from restricted environments: Rosalina douvillei (Cushman, 1928) and …
2020
A biometric comparison is carried out on selected tests of the foraminiferal species Rosalina douvillei (Cushman, 1928) and Trichohyalus aguayoi (Bermudez, 1935). The Rosalina douvillei specimens were recovered from the marginal marine Oligocene/Miocene site of Russingen (Mainz Basin, Germany), the lacustrine beds of the lower Miocene site of Bunol (Valencian Community, Spain) and the middle/ upper Miocene site of Fuendetodos (Aragon, Spain). The Trichohyalus aguayoi tests were collected in the current coastal lagoon of Torreblanca and recovered from Holocene cores sampled in the Peniscola marsh and in the coastal lagoon of l’Albufera de Valencia, all them in the Valencian Community (Spain)…
Habitat preference of endangered Eastern Iberian Reed BuntingsEmberiza schoeniclus witherbyi
2011
Capsule Careful management is required to maintain or create habitats with the correct proportions of rush with reeds that are preferred by this subspecies. Aims To determine the habitat requirements of Eastern Iberian (Western Iberian Reed Buntings were not included in the study) Reed Buntings Emberiza schoeniclus witherbyi, a subspecies endemic to a few marshes in France, Spain and Morocco, with a population of 254–360 breeding pairs. Methods Twenty-five wetlands in Spain were surveyed and presence/absence of Iberian Reed Buntings was deteremined together with data on 41 environmental variables. The relationships between the birds and habitat data were investigated using glm. Results Prop…
A new autumn-flowering species of Allium (Alliaceae) from Croatia
2009
Here we describe Allium telmatum Bogdanovic, Brullo, Giusso & Salmeri, a new species of Allium sect. Codonoprasum from North Dalmatia (Croatia). Its chromosome number (2n = 32), karyotype, leaf anatomy, ecology and taxonomical relationships are examined. Several features, such as phenology (flowering in autumn), occurrence in coastal salt marshes, tetraploid chromosome number, and morphology, indicate that it is most closely related to the Tyrrhenian species Allium savii. On the basis of our herbarium survey, we present here a distribution map of the autumn-flowering species of Allium sect. Codonoprasum in the Mediterranean area.
Tetraploid European Salicornia species are best interpreted as ecotypes of multiple origin
2011
Abstract Salicornia procumbens and S. stricta are two tetraploid European salt marsh species of locally adjacent but ecologically differentiated distribution. Whereas S. procumbens grows in the lowest part of the salt marsh, it is replaced by S. stricta in the middle part (and diploid Salicornias in the upper part). Using AFLPs and a reciprocal transplantation experiment, we investigated whether the two species represent distinct evolutionary lineages. The analysis of AFLP variation clearly showed that both species are not monophyletic. Also, accessions do not cluster according to geographical origin. The transplantation experiment revealed that S. procumbens shows significantly reduced fit…
Macroinvertebrate communities in sediment and plants in coastal Mediterranean water bodies (Central Iberian Peninsula).
2007
Sediment and plant-associated macroinvertebrates were sampled in six shallow water bodies along the central part of the coast of Mediterranean Spain. The size of ponds, salinity and hydroperiod were highly variable. Seventy-one taxa were recorded, some of them were endemic or uncommon species, evidencing the important contribution of these ponds to biodiversity. Crustaceans and gastropods of biogeographical interest were found in the most primeval site. Correspondence analysis showed that macroinvertebrate assemblages responded to environmental variables such as salinity, temporality and eutrophication. The brackish water fauna was dominated by crustaceans, while oligochaeta and insect larv…
Fan Deltas and Floodplains in Valencian Coastal Plains
2018
The Valencian coastal plains are formed at the end of two important mountain systems: the Iberian Mountain Range to the north and the Baetic Mountains to the south. As a result of tectonic and neotectonic activity, several graben have been formed at the foot of these reliefs, which have been filled with Plio-Quaternary deposits. In all the coastal plains a depositional sequence is repeated in which the river deposits -fan deltas and alluvial plains- alternate with lagoons/marshes. Basin dimensions, sediment input, tectonics and neotectonics in the study area all determine the size, style and characteristics of fluvial forms, which in turn, influence the characteristics of the coast. Ephemer…
EPR dating of shells from Malhada Marsh, Rio de Janeiro, Brazil
2020
The formation of the coastal plain of the Brazilian sea is mainly due to the fluctuation of relative sea level in the past. Armacao dos Buzios or simply Buzios is a municipality in the microregion of lakes, in the state of Rio de Janeiro. In this region there is a lowland area about two meters above current sea level. This lowland area is also known as coastal plain of Una River. It is expected that during the Holocene period the sea level reached a maximum about 2.5 meters above the current level. During that time billions of mollusks lived and proliferated in the shallow waters around the coastal plain of the Una River. As they died their shells formed a layer in the soil including Malhad…
Effects of salinity, temperature and food level on the demographic characteristics of the seawater rotifer Synchaeta littoralis Rousselet.
2001
A strain of the seawater species Synchaeta littoralis, isolated from a Spanish Mediterranean coastal salt marsh, was cultured in the laboratory and fed with the alga Tetraselmis sp. The effect of three salinities (25 per thousand, 30 per thousand and 35 per thousand), two temperatures (20 degrees C and 25 degrees C) and two food levels (75,000 and 150,000 cells ml(-1)) on demographic parameters was studied using a life table approach. Average lifespan (LS) ranged between 4.0 and 7.3 days, net reproductive rate (R(0)) between 4.2 and 9.1 offspring per female, and intrinsic growth rate (r) between 0.50 and 0.95 day(-1). Salinity and temperature had a significant negative effect (***p<0.001) o…