ESPICULAS DE ESPONJAS PDFESPICULAS DE ESPONJAS PDF

O Paleolago Cemitério, Catalão, Goiás, é um depósito lacustre rico em espículas de esponjas continentais. Essas espículas, que estão presentes em três. This Pin was discovered by Joelma Martins Fonseca. Discover (and save!) your own Pins on Pinterest. A sustentação das células das esponjas é feita por lamentos calcários chamados de espículas. Nas esponjas também não há sistemas responsáveis pelas.

Author: Tajin JoJojin
Country: Laos
Language: English (Spanish)
Genre: Music
Published (Last): 17 October 2011
Pages: 419
PDF File Size: 2.41 Mb
ePub File Size: 7.57 Mb
ISBN: 240-5-77582-805-8
Downloads: 87610
Price: Free* [*Free Regsitration Required]
Uploader: Net

J Coastal Res Corvoheteromeyenia australis Bonetto and Ezcurra de Drago Figs.

Rev Bras Geocienc 31 4: According to these esoiculas, the species H. An indigenous assemblage of lentic sponges was found, consisting of Metania spinata CarterDosilia pydanieli Volkmer-RibeiroRadiospongilla amazonensis Volkmer-Ribeiro and MacielTrochospongilla variabilis Bonetto and Ezcurra de DragoCorvomeyenia thumi TraxlerHeterorotula fistula Volkmer-Ribeiro and Mottaplus Corvoheteromeyenia australis Bonetto and Ezcurra de Fsponjaswhich here has its first record in an assemblage formed by biosiliceous deposits.

Few spicules of D.

Rare spicules of E. Spicules of the freshwater sponge Ephydatia facunda indicate lagoonal paleoenvironment at the pampas of Buenos Aires Province, Argentina.

The marked occurrence of this assemblage throughout the stratigraphic columns, comprising 25 layers characterized as spongofacies [Layers 5, 6, 9, 10, 11 and 14 from Section 1 Fig. At that time, the term “spongofacies” was esipculas and defined for facies with a predominance of sponge spicules that, when identified, indicate specific paleoenvironmental characteristics.

  FONDOSCOPIA DIRECTA E INDIRECTA PDF

Espícula (esponja) – Viquipèdia, l’enciclopèdia lliure

Spongofacies with spicules of D. The first one is based on the leaching of the underlying carbonatite and phoscorite, a process that could result in large caves or dolines, thereby decreasing the size of the rock by up to five times. Trochospongilla variabilis Bonetto and Ezcurra de Drago Fig. The alternation of clay Layers 2, 3, 4, 6, 8, 9, 10, 12, 13, 15 and 16, Section 2 and conglomerates Layers 1, 5, 7, 11 and 14, Section 2 is indicative of such a process Fig.

The results presented herein correspond to an unpublished component of the Master’s thesis of the senior author. Freshwater sponges as indicators of floodplain lake environments and of river rocky bottom in Central Amazonia.

Espiculas de esponja | Biologia de inverterbrados | Pinterest

All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. Proc Acad Nat Sci Phila 5: Optically stimulated luminescence dating of young sediments. Porifera, Metaniidae Volkmer-Ribeiro, For the Optical Microscope OM identification of the sponge spicules espicluas the sediments, a specific laboratory technique was applied to obtain permanent slides.

Bull US Nat Mus Roberto Iannuzzi and Dr.

Spongofacies as in Layer 3. Trans Am Espobjas Soc 99 1: The gemmules, which are the asexual reproduction structures, have been crucial in the occupation of continental environments and ensure the survival of the species in seasonal habitats, being also important structures for the dispersion of the animals within aquatic microenvironments Volkmer-Ribeiro Except for the species C.

  DIN 59411 PDF

Radiospongilla amazonensis Volkmer – Ribeiro espknjas Maciel Spongofacies as in Layer 5. Iheringia, Ser Zool 99 4: Interpreting the Hydrological history of temporary ponds from chemical and microscopic characterization of siliceous microfossils.

Espícula (esponja)

Few spicules, differing from that of Layer 1 by the absence of E. Following death, the body of the sponge remains in the water column, and the spongin rapidly decomposes, releasing the siliceous spicules that are deposited in sediments.

This interpretation is supported by the stratigraphy at Section 1 whose the basal section dspiculas dominated by coarse particle sizes suggesting deposition in a strong uni-directional flow. Spongofacies differing from that of Layer 11 by eespiculas presence of O.

A Study of Lake Huleh. Vanessa de Souza Machado E-mail: Manuscript received on June 15, Accepted for publication on October 26, Spongofacies differing from that of Layer 3 by the absence of C. Ann Mag Nat Hist 5 7: Demospongiaeindicators of some typical coastal habitats at South America: