scholarly journals Seasonal Changes in Reproductive Traits of the Crab Sesarma Rectum (Grapsoidea: Sesarmidae) on the Northern Coast of São Paulo State, Brazil

2006 ◽  
Vol 26 (2) ◽  
pp. 141-147 ◽  
Author(s):  
Maria Helena de Arruda Leme
Keyword(s):  
Seasonal Changes ◽  
Reproductive Traits ◽  
Sao Paulo ◽  
Northern Coast ◽  
São Paulo ◽  
Paulo State ◽  
São Paulo State

scholarly journals The structure of rocky reef fish assemblages across a nearshore to coastal islands' gradient in Southeastern Brazil

2012 ◽  
Vol 10 (2) ◽  
pp. 369-382 ◽  
Author(s):  
Fernando Zaniolo Gibran ◽  
Rodrigo Leão de Moura
Keyword(s):  
Fish Assemblages ◽  
Sao Paulo ◽  
Southeastern Brazil ◽  
Northern Coast ◽  
Fish Assemblage Structure ◽  
São Paulo ◽  
Study Region ◽  
Paulo State ◽  
Rocky Reefs ◽  
São Paulo State

Local assemblages of fishes associated with reefs are influenced by interactions among the availability of larvae and survival of recruits with subsequent biotic and abiotic forcing, as well as by periodic and episodic disturbances of varying natures and magnitudes. Therefore, besides being structurally heterogeneous and patchily distributed, reef systems are strongly context-dependent due to the influence of a broad array of ecological processes. In order to assess interactions of local factors that influence the distribution and abundance of reef fishes within a coastal mosaic of rocky reefs, we tested the null hypothesis of no significant variation in fish assemblage structure, by comparing 33 sites along the northern coast of the São Paulo State, Southeastern Brazil. Replicated stationary visual census samples (n = 396) were obtained at different distances from the coast, depths and wave exposures, including the mainland, three relatively small coastal islands, and the two margins of a wide channel between the mainland and the large São Sebastião Island (~350 km²), totaling 225 h of SCUBA diving. The regional rocky shore fish fauna comprised 106 species (41 families), with preponderance of diurnal mobile-invertebrate feeders. Samples from the outer margin of the São Sebastião Island, together with those from Alcatrazes, Búzios, and Vitória islands were significantly dissimilar from samples from the coastal sites at the São Sebastião Channel. Species richness tended to increase in a gradient from the coast to the more offshore islands. Local conditions such as depth and other habitat characteristics also influenced fish assemblages' structure. Distance from coast and depth were the main predictors for fish assemblages, followed by water transparency, temperature and benthic cover. This study represents the first regional-scale assessment of fish assemblages associated with rocky reefs in the São Paulo State coast, filling a major geographic knowledge gap in the South Atlantic. As the study region is experiencing fast coastal development and growing threats from seaport expansion, oil and gas exploitation, as well as increasing fishing and tourism pressure, the understanding of the underlying factors that influence the distribution and abundance of the reef-associated biota comprises a relevant baseline for monitoring, conservation planning and management.

Two new species of Agauopsis (Halacaridae, Acari) from Southeastern Brazil

Zootaxa ◽  
2005 ◽  
Vol 994 (1) ◽  
pp. 1 ◽  
Author(s):  
ALMIR R. PEPATO ◽  
CLÁUDIO R. TIAGO
Keyword(s):  
New Species ◽  
Coarse Sand ◽  
Sao Paulo ◽  
Southeastern Brazil ◽  
Northern Coast ◽  
São Paulo ◽  
Paulo State ◽  
Two New Species ◽  
São Paulo State ◽  
Shell Debris

Mites belonging to two new species of Agauopsis (Halacaridae, Acari) were obtained from seaweed, coarse sand and coarse shell debris taken from several sites in Northern Coast of São Paulo State. Agauopsis legionium sp. nov., which belongs to the brevipalpus group and Agauopsis itassussensis sp. nov., closely related to A. okinavensis Bartsch, 1986 are described.

scholarly journals Abundance and distribution of sessile invertebrates under intertidal boulders (São Paulo, Brazil)

1995 ◽  
Vol 43 (1) ◽  
pp. 71-88 ◽  
Author(s):  
Rosana Moreira da Rocha
Keyword(s):  
Sao Paulo ◽  
Northern Coast ◽  
Percent Cover ◽  
São Paulo ◽  
Paulo State ◽  
Sessile Invertebrates ◽  
São Paulo State ◽  
Abundance And Distribution

The encrusting communities under two boulder fields (Praia Grande and Ponta do Baleeiro) were monitored monthly during 1990 and 1991, in São Sebastião, on the northern coast of São Paulo State, Brazil. Two sizes of boulders were chosen: small (20-30 cm² underside area) and larger ones (160-220 cm²) located on the middle and lower levels of the intertidal. The community's components were mainly sessile animals either compound ones such as Bryozoa, Ascidiacea, Porifera and Cnidaria, in this order of abundance, or simple ones such as Polychaeta and Bivalvia, also in this order of abundance. All groups, except by serpulids (Polychaeta), had higher percent cover in the low intertidal region and under large boulders. Diversity was higher at Ponta do Baleeiro, and in the low intertidal region and on large boulders for both shores.

scholarly journals Pattern of shell occupation by the hermit crabPagurus exilis(Anomura, Paguridae) on the northern coast of São Paulo State, Brazil

2006 ◽  
Vol 40 (1-2) ◽  
pp. 77-87 ◽  
Author(s):  
Mariana Terossi ◽  
Danillo L. A. Espósito ◽  
Andrea L. Meireles ◽  
Renata Biagi ◽  
Fernando L. Mantelatto
Keyword(s):  
Sao Paulo ◽  
Northern Coast ◽  
São Paulo ◽  
Paulo State ◽  
São Paulo State

scholarly journals Snake assemblage of Ilha de São Sebastião, southeastern Brazil: comparison to mainland

2008 ◽  
Vol 8 (3) ◽  
pp. 63-68 ◽  
Author(s):  
Fernanda da Cruz Centeno ◽  
Ricardo Jannini Sawaya ◽  
Otavio Augusto Vuolo Marques
Keyword(s):  
Atlantic Forest ◽  
Dominant Species ◽  
Sao Paulo ◽  
Southeastern Brazil ◽  
Northern Coast ◽  
São Paulo ◽  
Snake Species ◽  
Paulo State ◽  
Bothrops Jararaca ◽  
São Paulo State

We provide a checklist of snake species from Ilha de São Sebastião (Ilhabela), the largest coastal island in Brazil located on the northern coast of São Paulo state. We also compare snake diversity (including richness and relative abundance of species) of Ilhabela and the nearest mainland municipality, São Sebastião. We obtained the data from the herpetological collections of the Instituto Butantan and Museu de Zoologia of Universidade de São Paulo, including records from 1939 to 2005. We recorded twenty snake species from Ilhabela (N = 376 individuals), and the dominant species was the viperid Bothrops jararaca with 55% of dominance. In São Sebastião we recorded 27 species (N = 625), and Bothrops jararaca was also the dominant species, but with 25% of dominance. Some common species seem to be more abundant in the mainland. Even considering the different number of individuals sampled between localities, rarefactions curves and richness estimations confirm that São Sebastião should present a higher number of species. The Chao 1 estimates 20 species (19 to 21 spp.) for Ilhabela, and 32 species (27 to 37 spp.) for São Sebastião. One of the most distinctive aspects of the snake fauna of Ilhabela is the occurrence of four species of the genus Dipsas (D. albifrons, D. alternans, D. neivai,and D. petersi). Throughout most of the coastal Atlantic Forest of São Paulo state only D. petersi is recorded. This is the first assessment of diversity of snakes in Ilha de São Sebastião and the municipality of São Sebastião. Thus, it is a contribution to the knowledge and conservation of the herpetofauna of the region and of the Atlantic Forest of southeastern Brazil.

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