Loss of vegetation cover in a tropical island of the Amazon coastal zone (Maranhão Island, Brazil)

The variety of the vegetation cover of the northern part of the coast of Heracleisky peninsula was studied. Prodromus includes 6 classes ( Festuco-Puccinellietea, Crithmo-Staticetea, Cakiletea maritimae, Therosalicornietea, Juncetea maritimi, Phragmito-Magnocaricetea ), 7 orders, 9 unions, 10 associations, 2 subassociations and a variant of association. The new association Bassio prostratae-Elytrigietum obtusiflorae and the new variant of association Salicornio-Puccinellietum giganteae var. Plantago coronopus described in the class Festuco-Puccinellietea.

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Correlation Between Land Surface Temperature and Vegetation Cover of Nagapattinam Coastal Zone, Tamil Nadu, Using Geospatial Techniques

Groundwater Resources Development and Planning in the Semi-Arid Region ◽

10.1007/978-3-030-68124-1_12 ◽

2021 ◽

pp. 221-238

Author(s):

Rajesh Jayaraman ◽

Lakshumanan Chokkalingam

Keyword(s):

Surface Temperature ◽

Coastal Zone ◽

Land Surface Temperature ◽

Vegetation Cover ◽

Land Surface ◽

Tamil Nadu ◽

Geospatial Techniques

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Triassic sponges (Sphinctozoa) from Hells Canyon, Oregon

Journal of Paleontology ◽

10.1017/s0022336000018333 ◽

1988 ◽

Vol 62 (03) ◽

pp. 419-423 ◽

Cited By ~ 6

Author(s):

Baba Senowbari-Daryan ◽

George D. Stanley

Keyword(s):

Endemic Species ◽

Upper Triassic ◽

Island Arc ◽

Tropical Island ◽

The Family ◽

Wallowa Terrane ◽

Unique Condition ◽

Hells Canyon

Two Upper Triassic sphinctozoan sponges of the family Sebargasiidae were recovered from silicified residues collected in Hells Canyon, Oregon. These sponges areAmblysiphonellacf.A. steinmanni(Haas), known from the Tethys region, andColospongia whalenin. sp., an endemic species. The latter sponge was placed in the superfamily Porata by Seilacher (1962). The presence of well-preserved cribrate plates in this sponge, in addition to pores of the chamber walls, is a unique condition never before reported in any porate sphinctozoans. Aporate counterparts known primarily from the Triassic Alps have similar cribrate plates but lack the pores in the chamber walls. The sponges from Hells Canyon are associated with abundant bivalves and corals of marked Tethyan affinities and come from a displaced terrane known as the Wallowa Terrane. It was a tropical island arc, suspected to have paleogeographic relationships with Wrangellia; however, these sponges have not yet been found in any other Cordilleran terrane.

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