scholarly journals Conhecimento e conservação dos peixes marinhos e estuarinos (Chondrichthyes e Teleostei) da costa norte do Brasil

2013 ◽  
Vol 13 (4) ◽  
pp. 251-259 ◽  
Author(s):  
Alexandre Pires Marceniuk ◽  
Rodrigo Antunes Caires ◽  
Wolmar Benjamin Wosiacki ◽  
Fabio Di Dario
Keyword(s):  
Economic Value ◽  
Fish Fauna ◽  
North Coast ◽  
Marine Biodiversity ◽  
Brazilian Coast ◽  
Marine Biota ◽  
Estuarine Fishes ◽  
The North ◽  
Scientific Collections

The tropical western South Atlantic, which includes a substantial portion of the Brazilian Exclusive Economic Zone, is a region of endemism broadly recognized as being of prime importance for the conservation of the marine biodiversity. The north coast of Brazil, which comprises the states of Amapá, Pará and Maranhão from the mouth of the rio Oiapoque to the mouth of the rio Parnaíba, harbors the largest continuous mangrove in the world, with approximately 8,900 km2. The high discharge of freshwater and continental sediments in the delta of the Amazonas affects the regime of tides, ocean currents, and several oceanographic processes of the north coast, with direct impact on the composition of the biota found in the region. Despite its economic value and intrinsic biological relevance, several aspects of the diversity of the marine and estuarine fishes of the region are poorly known. This situation results mainly from a historical imbalance in terms of the number of studies devoted to increasing the knowledge of the marine biota along the Brazilian coast, such as those dealing with species inventory and taxonomic revisions, which are typically concentrated in the south and southwestern portions of the country. The scientific production focused on marine organisms of the north coast is also imbalanced, and reflects the relatively small number of taxonomists and research groups working on that subject. The insufficient knowledge of the biodiversity of the marine and estuarine fishes of the north coast is an impediment to the implementation of adequate public policies aimed at the management of natural resources in the region. In the long term, that situation is potentially harmful in terms of conservation of a still poorly known biota. A better understanding of the marine fish fauna of the north coast of Brazil will be achieved only through the investment in scientific research and personnel training in systematics and biogeography, coupled with the modernization of the current infrastructure and expansion of scientific collections of the region.

scholarly journals The deep sea teleost fish fauna of the Brazilian North Coast

2020 ◽  
Vol 18 (3) ◽  
Author(s):  
Alex Garcia Cavalleiro de Macedo Klautau ◽  
Israel Hidenburgo Aniceto Cintra ◽  
Matheus Marcos Rotundo ◽  
Alfredo Carvalho-Filho ◽  
Rodrigo Antunes Caires ◽  
...  
Keyword(s):  
Deep Sea ◽  
Fish Fauna ◽  
North Coast ◽  
Brazilian Coast ◽  
Northern Coast ◽  
Commercial Fish ◽  
The North ◽  
Species Lists ◽  
Sea Fish ◽  
Photographic Records

Abstract Data on the deep sea fishes found off the northern Brazilian coast are restricted to the results of the surveys of the RV Oregon, a research vessel of the North American National Marine Fisheries Service, and the REVIZEE Program. The REVIZEE Score-Norte Program focused on commercial fish species and natural resources with potential for exploitation on the continental shelf and slope off the northern coast of Brazil. In this sense, the REVIZEE Score-Norte Program generated little information on species of no commercial value, did not catalog its inventory in zoological collections, and did not publish species lists. Given this considerable knowledge gap on the deep-sea fish found off the North coast of Brazil, we compiled all the available data on the deep-sea fish of this region and also retrieved photographic records from the REVIZEE Score-Norte Program, including the PRODEMERSAL and PROTUNA projects. Considering the published records, specimens deposited in zoological collections, and the interpretation of photographic records, we compiled a list of 63 species of deep-sea fish from the North coast of Brazil. An additional 30 species were found in the published records from the PRODEMERSAL and PROTUNA, but were considered to be doubtful or pending confirmation.

scholarly journals Teleostei fishes of the North Coast of Brazil and adjacent areas

2021 ◽  
Vol 10 ◽  
pp. e2021006
Author(s):  
Alexandre Marceniuk ◽  
Rodrigo Antunes Caires ◽  
Alfredo Carvalho-Filho ◽  
Alex Garcia Cavalleiro de Macedo Klautau ◽  
Wagner C. Rosa Santos ◽  
...  
Keyword(s):  
New Records ◽  
Fish Fauna ◽  
North Coast ◽  
Marine Biodiversity ◽  
Aquatic Biodiversity ◽  
Oil Reserves ◽  
Environmental Features ◽  
The North ◽  
Oceanic Species ◽  
Infor Mation

The North Coast of Brazil is a biogeographical area of the Exclusive Economic Zone of Brazil that share environmental features with region under influence of the Plume of the rio Amazon and Orinoco. Despite the relevance of the region’s fish fauna, in biogeo-graphic, ecologic, and commercial terms, this area is poorly known. This study presents the most complete and updated list of the bony fish fauna from the North Coast of Brazil, aiming to minimize our knowledge gap on such region's biodiversity. The main sources of infor-mation were records from zoological collections, inventories obtained during the surveys of the Research and Conservation National Center of Northern Marine Biodiversity and collec-tions from the authors. A total of 787 species of the Teleostei were recorded off the North Coast of Brazil and adjacent waters, representing 156 families and 45 orders. Most (531) of these species are coastal, 256 inhabit deeper water, and 31 pelagic (oceanic) species are com-mon to both the internal and external continental shelf, of which 54 represent new records. Given the progressive intensification of fisheries and increasing incentives for the exploita-tion of the local gas and oil reserves, a more adequate inventory of the marine fish fauna of the North Coast of Brazil is fundamentally important for the management of the region’s aquatic biodiversity.

Biemna trisigmata sp. n., a new sponge from the North coast of Brazil (Demospongiae, Poecilosclerida)

Zootaxa ◽  
2004 ◽  
Vol 639 (1) ◽  
pp. 1 ◽  
Author(s):  
Beatriz Mothes ◽  
Maurício A. De Campos
Keyword(s):  
New Species ◽  
North Coast ◽  
Brazilian Coast ◽  
The North ◽  
A New Species

A new species of Biemna Gray, 1867, B. trisigmata sp. n., is described from the northern Brazilian coast, Amap State. The new species is compared to other tropical West Atlantic species of Biemna, from which it differs in having three categories of sigmas and two categories of microxeas.

scholarly journals Agroecología del sistema de aboneras en el litoral atlántico de Honduras.

2016 ◽  
Vol 7 (1) ◽  
pp. 117
Author(s):  
Bernard Triomphe
Keyword(s):  
Nutrient Cycling ◽  
Biomass Accumulation ◽  
Field Measurements ◽  
North Coast ◽  
The North ◽  
Baseline Information ◽  
Long Term Trends ◽  
Continuous Use ◽  
Time Substitution

The present study constitutes an initial effort to provide baseline information about the internal workings of the mucuna system. It includes a discussion of biological mechanisms which shape this system, especially with regard to nutrient cycling. Long-term trends in soil chemical and physical fertility are also analyzed. Chronosequences (also known as space-for-time substitution schemes) form the backbone of this long-term analysis: they were constructed by taking advantage of the diversity of adoption dates of the mucuna system among farmers. All field measurements were made at the level of small observation plots selected on uniform backslopes within farmers’ fields and subjected to a periodic agronomic monitoring throughout the maize growing season. After describing general characteristics of the mucuna system, an analysis of the various pools participating in nutrient cycling is conducted. Mucuna biomass accumulation and descomposition are then discussed, as well as the dynamics of mineral nitrogen in the soil profile, an analysis which in turn helps understand maize response to limited applications of nitrogen fertilizer. Although it appears that the mucuna system is too specific to the conditions prevailing in the North coast of Honduras to be extrapolated directly. After 12 years or more of continuous use of the mucuna rotation, a result which can undoubtedly be attributed to the high yearly organic additions and efficient nutrient cycling in this system.

The genera Acaromantis and Simognathus (Simognathinae, Halacaridae) on the north coast of São Paulo State, Brazil

Zootaxa ◽  
2004 ◽  
Vol 615 (1) ◽  
pp. 1 ◽  
Author(s):  
ALMIR ROGÉRIO PEPATO ◽  
CLÁUDIO GONÇALVES TIAGO
Keyword(s):  
New Species ◽  
First Record ◽  
Sao Paulo ◽  
North Coast ◽  
Brazilian Coast ◽  
São Paulo ◽  
Paulo State ◽  
The North ◽  
Two New Species ◽  
São Paulo State

This is the first record of the subfamily Simognathinae for the Brazilian coast. Two new species are described, Acaromantis vespucioi sp. nov. and Simognathus euphractus sp. nov. The description of Simognathus fuscus Viets, 1936 is extended with the inclusion of juveniles description.

scholarly journals Divergent trends in anadromous salmonid populations in Norwegian and Scottish rivers

2008 ◽  
Vol 276 (1659) ◽  
pp. 1021-1027 ◽  
Author(s):  
Leif Asbjørn Vøllestad ◽  
David Hirst ◽  
Jan Henning L'Abée-Lund ◽  
John D Armstrong ◽  
Julian C MacLean ◽  
...  
Keyword(s):  
Salmo Salar ◽  
Scale Effects ◽  
Economic Value ◽  
Temporal Correlation ◽  
Local Scale ◽  
Population Abundance ◽  
Catch Data ◽  
The North ◽  
High Conservation

The Atlantic salmon ( Salmo salar ) is a charismatic anadromous fish of high conservation and economic value. Concerns have been expressed regarding the long-term viability of fisheries throughout the species's distributional range because of abundance variations that cannot currently be explained or predicted. Here, we analyse long-term catch data obtained over a wide geographical range and across a range of spatial subscales to understand more fully the factors that drive population abundance. We use rod catch data from 84 Norwegian rivers over 125 years (1876–2000) and 48 Scottish rivers over 51 years (1952–2002). The temporal correlation in catches is very long-term, with trends persisting over several decades. The spatial correlation is relatively short-range, indicating strong local-scale effects on catch. Furthermore, Scottish salmon populations exhibit recent negative trends in contrast to some more positive trends in Norway—especially in the north.

scholarly journals Spatial and temporal variation of the zooplankton community in the area of influence of the Itajaí-açu River, SC (BRAZIL)

2008 ◽  
Vol 56 (3) ◽  
pp. 211-224 ◽  
Author(s):  
Charrid Resgalla Junior ◽  
Vitor Gonçalves Coutinho de Souza ◽  
Leonardo Rubi Rörig ◽  
Carlos Augusto França Schettini
Keyword(s):  
Saline Water ◽  
River Mouth ◽  
Zooplankton Community ◽  
Temporal Variations ◽  
Spatial And Temporal Variation ◽  
North Coast ◽  
Brazilian Coast ◽  
The North ◽  
Tropical Water ◽  
Area Of Influence

On the north coast of the State of Santa Catarina (Brazil), the Itajaí-Açu River mouth shows a low-saline water plume on the internal shelf with strong density gradients. This oceanographic condition has a possible influence over the pelagic community, and it has been little investigated on the Brazilian coast. The present work seeks to evaluate the spatial and temporal variations of the zooplankton community in the area of influence of the Itajaí-açu River, and its relations with the abiotic forces of temperature (seasonal variation) and salinity of the river plume. For this purpose, 14 monthly oceanographic cruises were carried out during the years 2002 and 2003, to obtain physical and chemical parameters, and zooplankton hauls in 9 sampling points. The zooplankton analyses were carried out at the lowest taxon possible to characterize the resident community of the river mouth. It was observed that the zooplankton presented the highest densities in winter and spring. The species with higher densities and frequencies of occurrence were Paracalanus quasimodo, Parvocalanus crassirostris, Acartia lilijeborgi, Temora stylifera, T. turbinata, and Penilia avirostris, indicating a prevalence in this region, of Tropical Water from the Brazil Current and greater similarity with the coastal community of the Southeast region of Brazil. However, even for the species typical of Tropical Water, there were alterations in dominance of the species, due to the seasonality and level of flow rate of the river on the salinity of the internal shelf of the study area.

Seasonal cycles and long-term trends in abundance and species composition of sharks associated with cage diving ecotourism activities in Hawaii

2009 ◽  
Vol 36 (2) ◽  
pp. 104-111 ◽  
Author(s):  
CARL G. MEYER ◽  
JONATHAN J. DALE ◽  
YANNIS P. PAPASTAMATIOU ◽  
NICHOLAS M. WHITNEY ◽  
KIM N. HOLLAND
Keyword(s):  
Public Safety ◽  
Ecological Impacts ◽  
North Coast ◽  
Seasonal Cycles ◽  
Shark Species ◽  
Annual Cycles ◽  
The North ◽  
Long Term Trends ◽  
Logbook Data

SUMMARYShark cage diving is both popular and controversial, with proponents citing educational value and non-extractive use of natural resources and opponents raising concerns about public safety and ecological impacts. Logbook data collected 2004–2008 from two Oahu (Hawaii) shark cage diving operations were analysed to determine whether such voluntary records provide useful insights into shark ecology or ecotourism impacts. Operators correctly identified common shark species and documented gross seasonal cycles and long-term trends in abundance of Galapagos (Carcharhinus galapagensis), sandbar (Carcharhinus plumbeus) and tiger sharks (Galeorcerdo cuvier). Annual cycles in shark abundance may indicate seasonal migrations, whereas long-term trends suggest gradual exclusion of smaller sandbar sharks from cage diving sites. Numerically dominant (> 98%) Galapagos and sandbar sharks are rarely implicated in attacks on humans. Negligible impact on public safety is supported by other factors such as: (1) remoteness of the sites, (2) conditioning stimuli that are specific to the tour operations and different from inshore recreational stimuli and (3) no increase in shark attacks on the north coast of Oahu since cage diving started. Tracking studies are required to validate logbook data and to determine whether sharks associated with offshore cage diving travel into inshore areas used for in-water recreation.

scholarly journals Occurrence and distribution of humpback whales (Megaptera novaeangliae) on the north coast of the State of Bahia, Brazil, 2000–2006

2008 ◽  
Vol 65 (4) ◽  
pp. 667-673 ◽  
Author(s):  
Marcos R. Rossi-Santos ◽  
Elitieri S. Neto ◽  
Clarêncio G. Baracho ◽  
Sérgio R. Cipolotti ◽  
Enrico Marcovaldi ◽  
...  
Keyword(s):  
The State ◽  
Megaptera Novaeangliae ◽  
Humpback Whales ◽  
North Coast ◽  
Brazilian Coast ◽  
Sampling Effort ◽  
Southwest Atlantic ◽  
The North ◽  
Commercial Whaling ◽  
Geographical Position

Abstract Rossi-Santos, M. R., Neto, E. S., Baracho, C. G., Cipolotti, S. R., Marcovaldi, E., and Engel, M. H. 2008. Occurrence and distribution of humpback whales (Megaptera novaeangliae) on the north coast of the State of Bahia, Brazil, 2000–2006. – ICES Journal of Marine Science, 65: 667–673. The Abrolhos Bank off Brazil is considered the main breeding ground for the humpback whale (Megaptera novaeangliae) in the Southwest Atlantic. However, owing to an increase in the occurrence of the species along the north coast of the State of Bahia, it has been suggested that the species is reoccupying that region, which was probably utilized by the whales before commercial whaling. Information is presented on the occurrence and distribution of humpback whales along the north coast of the State of Bahia, with a comparative overview, for the period 2000–2006. Daily research cruises were conducted from July to October, departing from Praia do Forte (13°40′S 38°10′W) and lasting ∼9 h. Data on sampling and sighting effort, and geographical position and composition of groups of humpback whales, were collected on standardized field sheets. In all, 230 surveys were performed, covering some 9740 nautical miles in 1645 h of sampling effort, during which 1626 humpback whales were sighted, including 118 calves. Humpback whales were sighted throughout the study area. Solitary individuals and pairs were the most frequent group composition, 26% and 37% of the observed groups (n = 723), respectively. Depth of water varied from 15 to 1657 m (mean = 62.4; s.d. = 99). The sightings values were grouped into depth classes to ascertain the highest frequencies (∼30%) for the two classes, i.e. between 35.1 and 55 m of water. There was an increase in the encounter rates of humpback whales on the north coast of the State of Bahia between 2000 and 2006, identifying a difference in SPUE [sightings per unit (h) of effort] among years (Kruskal–Wallis H = 30.155, d.f. = 6, p < 0.05). The results support the hypothesis that humpback whales are reoccupying former breeding areas along the Brazilian coast.

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