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Showing 1 to 19 of 19 for “"Verrill"”.
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THE FUNCTIONAL ROLE OF ASTERIAS VULGARIS VERRILL (1866) IN THREE SUBTIDAL COMMUNITIES
<p>The functional role of Asterias vulgaris has been investigated in three subtidal communities at the Isles of Shoals, New Hampshire, U.S.A., from 1975 to 1980. The three communities are located at depths of 8 m, 18 m, and 30 m along a transect from the intertidal to a depth of 35 meters on rocky …
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Esforço reprodutivo de Mussismilia braziliensis (Verrill, 1868) (Cnidaria, Scleractinia, Mussidae) no complexo recifal dos Abrolhos, BA, Brasil
Mussismilia braziliensis is endemic to Bahia State. lt plays an important role as one of the major reef builders in the area. Ten fragments of colonies were collected at three sites in the Abrolhos Reef Complex, located at different distances from the coast. Reproductive effort was estimated …
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Effects of Sediment on Growth and Survival of Various Juvenile Morphologies of the Scleractinian Cora, Oculina Arbuscula (Verrill)
Sedimentation can play an important role in shaping tropical and temperate benthic marine communities. Here, I quantified sedimentation rates on a hard-bottom reef in the South Atlantic Bight (SAB) off the coast of Georgia, USA and assessed its effects on a conspicuous member of the benthic …
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Revisão sistemática dos Octocorallia (Coelenterata, Anthozoa) dos recifes de Abrolhos, BA, Brasil
… (Donovan, 1825); Plexaurella grandiflora (Verrill, 1912); Plexaurella sp.; Olindagorgia gracilis (Verrill, 1912); e Phyllogorgia dilatata (Esper, 1806). Four of these species (P. grandiflora, Plexaurella sp., Q. gracilis e P. dilatata) are endemic in Brazilian territory and two (Plexaurella …
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Aspectos morfológicos e microanatômicos das espécies brasileiras de Mussidae Ortmann, 1890 (Cnidaria, Scleractinia)
… to the Brazilian genus Mussismilia: M. hispida (Verrill, 1868), M. braziliensis (Verrill, 1868) and M. hartti (Verrill, 1902) and one from the world wide genus Scolymia Haime, 1852: S. wellsi. The microanatomical study allowed a more ample characterization of the species, and also revealed new …
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Comparative anatomy and biology of two species of the asteroid genus pisaster
… have been made only by Fisher (1930) and Verrill (1914). Both of these investigators restricted their observations largely to the endoskeleton and its calcareous protuberances. In addition to analyzing the work of Fisher, an attempt to differentiate between the two species regarding …
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Revisão taxonômica do gênero Thesea (Cnidaria: Octocorallia) do Atlântico Ocidental
… species do not belong to the genus: T. gemmata Verrill, 1869, T. plana Deichmann, 1936, T. solitaria (Pourtalès, 1868) and T. nivea Deichmann, 1936.
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Estudo sistemático de duas espécies de Acontiaria (Cnidaria, Anthozoa, Actiniaria) da Baía de Guanabara, Rio de Janeiro, Brasil
… 1935). These anemones are Haliplanella lineata (Verrill, 1869) and a new genus, new species, both of the family Haliplanellidae Hand, 1956. Haliplanella lineata is cosmopolitan and had already been registered in Rio de Janeiro (Belém & Monteiro, 1977). The new species, up to now, has only been …
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Control of Common Carp in the Heron Lake Watershed, Minnesota
Common carp Cyprinus carpio were radiotracked during the winter of two years in North (83 7 hectares) and South (13 60 hectares) Heron Lakes, Minnesota to monitor survival and behavior in these shallow (maximum depth 1. 5 m), turbid lakes. Winterkill conditions killed four of six radiotagged common …
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Moluscos gastrópodes da plataforma continental externa e talude continental ao largo da laguna dos Patos - Rio Grande do Sul, Brasil
… Rios & Absalão, 1990, Melanella aff. hypsela (Verrill & Bush, 1900), Trachipollia turricula (von Maltzan, 1884), Anachis sparsa Reeve, 1859, Dentimargo janeiroensis (E. A. Smith, 1915), Axelella brasiliensis Verhecken, 1991, Drilliola loprestiana (Calcara, 1841), Mitrolumna biplicata (Dall, …
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Direct and indirect photoreactions of chromophoric dissolved organic matter : roles of reactive oxygen species and iron
Photochemical transformations of chromophoric dissolved organic matter (CDOM) are one of the principal processes controlling its fate in coastal waters. The photochemical decomposition of CDOM leads to the formation of a variety of biologically available carbon substrates. Photomineralization of …
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Rhenium (VII) cis-dioxo complexes
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1996.
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A numerical investigation of Apéry-like recursions and related Picard-Fuchs equations
In this work we investigate a generalization of a recursion which was used by Apery in his proof of irrationality of the zeta function values at 2 and 3. It is a continuation of the work of Zagier , who considered generalization of the first equation and numerically investigated it. The study is …
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On the dynamics of shallow water currents in Massachusetts Bay and on the New England continental shelf
Massachusetts Bay is a coastal Bay 100 km long and 40 km wide located in the western Gulf of Maine. The Bay is closed by land to the north, west and south, but is open to the Gulf to the east; the opening is partially blocked by a shallow bank. The bottom sediment distribution in the Bay is …
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The kinematics and dynamics of the New England continental shelf and shelf/slope front
A 37 day long field program was carried out in March 1974 on the New England continental shelf break to study the current and hydrographic structure and variability on the shelf and in the shelf/slope front. A second experiment was conducted in the shelf break region for one week in January 1975 to …