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| Registros recuperados: 79 | |
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| Espinosa,Mara I; Bertin,Angéline; Gómez,John; Mejía,Florencio; Guerra,Martha; Baez,Lina; Gouin,Nicolas; Patiño,Edgar. |
| The American crocodile, Crocodylus acutus, has experienced important population declines worldwide due to human persecution, overexploitation and habitat loss. C. acutus remains critically endangered in some countries such as Colombia where the lack of detailed surveys on its ecology and distribution constitutes a major barrier to the development of effective conservation strategies. We conducted a three-year capture-recapture study to investigate the demographic status of C. acutus and to identify environmental variables likely to in uence its distribution in Portete Bay (Colombia). We estimated the crocodile population to be relatively small (< 140 animals), to include very few adults, and to demonstrate a very strong de cit in females in the juvenile... |
| Tipo: Journal article |
Palavras-chave: Capture-recapture; Crocodile; Environmental variables; Mangrove. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382012000200006 |
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| Hostim-Silva,Maurício; Ribeiro,Gisela Costa; Clezar,Leandro; Ledo,Blanca Sierra de. |
| Attempting to contribute with the knowledge about the bioecological aspects concerning the youth forms of M. furnieri (Desmarest, 1823) and C. leiarchus (Cuvier, 1830) from Itacorubi mangrove, 15 samplings were taken from January 1988 to March 1989. Using casting and entangle nets, a total of 308 individuais from these species were captured. Their abundanee were: M. furnieri N = 197 (64,0%); C. leiarchus N = 111 (36,0%). The relative frequency and range of total weights and lengths were studied. Concerning spatial distribution of the species, it was observed that M. furnieri occurred in all areas and C. leiarchus was not captured only in "D" area (Sertão River). During the anual cycle the two species occurred jointly. The results emphasize other authors... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sciaenidae; Mangrove; Abundance; Distribution. |
| Ano: 1992 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751992000200011 |
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| Tong, P. H. S; Auda, Y; Populus, Jacques; Aizpuru, M; Al Habshi, A. Al; Blasco, F. |
| This study is an attempt to produce an assessment of the impact of shrimp aquaculture in the Mekong Delta (Viet Nam) on mangrove ecosystems. For this exercise we selected two sub-areas (Ca Mau and Tra Vinh provinces) encompassing a variety of land uses and ecological conditions. Twenty stations in Tra Vinh and 15 stations in Ca Mau have been surveyed several times from September 2000 to March 2002. Field investigations included mangrove soils studies, measurements of pH and salinity of the water, analysis of mangrove flora, and density and structure of the vegetation. Four Systeme Probatoire de l'Observation de la Terre (SPOT) scenes were used for the discrimination of mangrove types and for the delineation of landscape units. For the first time, five... |
| Tipo: Text |
Palavras-chave: Crevette; Aquiculture; Exploitation agricole; Mangrove; Discrimination; Indice végétation; Extrême Orient; Asie; Macrura; Decapoda; Crustacea; Arthropoda; Invertebrata. |
| Ano: 2004 |
URL: https://archimer.ifremer.fr/doc/2004/publication-2303.pdf |
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| Chaves, P; Bouchereau, Jl. |
| The Bay of Guaratuba, whose area is approximately 45 km(2), is a basin, situated to the south of Brazil (25 degrees 52' S; 48 degrees 39' W) and connected to the Atlantic ocean. In its northern part, a region of mangrove is found, under the influence of seasonal fluvial contributions, dominated by Laguncularia racemosa. The depth exceeds 6 m in some places. According to the period of the year, salinity varies between 3 and 37, and temperature between 15 and 28 degrees C. Several of the present fish species are exploited by commercial and recreational fisheries. This work describes characteristics of the fish populations occupying this mangrove, and temporal and spatial evolution of populations of the main species from available data on their biology.... |
| Tipo: Text |
Palavras-chave: Pisces; Organisation; Domaine paralique; Mangrove; Atlantique ouest; Pisces; Organisation; Paralic realm; Mangrove; Western Atlantic. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/00325/43615/43917.pdf |
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| Azevedo,Joaquim Alexandre Moreira; Barros,Alexandre Bomfim; Miranda,Paulo Rogério Barbosa de; Costa,João Gomes da; Nascimento,Velber Xavier. |
| Abstract Mangroves are tropical and subtropical flooded forests that generally develop in estuarine areas over unstable sediments protected from the action of waves in the intertidal zone with an environment characterized by a great diversity of fauna and flora. Thus, the present study aimed to evaluate the levels of heavy metals that are absorbed by mangrove oysters, in estuarine systems in the Alagoas coast by determining the concentrations of Fe, Cu, Mn, Zn, Cd and Cr. Two areas, which consisted of both a collection during the rainy season and the dry season, were selected for sampling of mangrove oysters. In each collection, seven samples were collected, at seven different points, where each sample contained four oysters. In the laboratory the oysters... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mangrove; Mangrove Oyster; Heavy Metals.. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100415 |
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| Duke, N.C.; Ge, X.-J.. |
| The first putative hybrid tree species of the genus Bruguiera (Rhizophoraceae), B. × rhynchopetala, is reported from mangrove forests of China and Australia. It was described from China previously as a variety of B. sexangula. The hybrid is acknowledged as B. gymnorhiza × B. sexangula with parent species restricted to different parts of the Indo-West Pacific. The hybrid is recognised at north-eastern and south-eastern parts of the overlap area between parent distributions, but it appears absent in western parts. Further local assessments are needed across the range. Hybrid status is supported by: 1) intermediate and shared morphological characters; 2) distribution limited to areas of co-occurrence of B. gymnorhiza and B. sexangula; and 3) molecular... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Bruguiera × rhynchopetala; Hybrid; Indo-West Pacific; Mangrove; Morphometric; Rhizophoraceae. |
| Ano: 2011 |
URL: http://www.repository.naturalis.nl/record/524643 |
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| Nascimento,Douglas M.; Ferreira,Emmanoela N.; Bezerra,Dandara M.M.S.Q.; Rocha,Pollyana D.; Alves,Rômulo R.N.; Mourão,José S.. |
| The present study was undertaken in two traditional communities that are located on the margins of the estuary and mangrove complex of the Mamanguape River, Paraíba state (PB), Brazil. This work describes the crabs capture techniques tapamento and redinha, and identifies the negative socio-environmental impacts of redinha, using qualitative methods (open and semi-structured interviews, guided tours, direct observation and the administration of questionnaires). Results indicate that currently only two principle techniques are used to capture Ucides cordatus: redinha and tapamento. Tapamento has a low impact in relation to redinha. Redinha was pointed out by interviewees as a system that has social impact (social conflicts, breaking of traditions,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crab catchers; Harvesting techniques; Mangrove; Traditional knowledge. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000400019 |
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| Chauvaud, S; Bouchon, C; Maniere, R. |
| In the framework of a comprehensive study of the coastal marine ecosystems of Guadeloupe Island (French West Indies), a remote sensing survey of marine communities was conducted in the Bay of the Grand Cul-de-Sac Marin. Pictures of SPOT satellite were used. At first sight, XS data from SPOT did not seem to be well adapted to extract information from deepest underwater areas. In the present study, a method for analysis of XS data was developed, which increases tenuous spectral differences associated to very low intensity signals. This technique led to a better distinction of objects, even the deepest ones. Reference surfaces were then identified in the field and a reliable supervised classification was conducted, which reflected the high diversity of... |
| Tipo: Text |
Palavras-chave: Télédétection; Cartographie; Récif corallien; Phanérogame marine; Mangrove; Remote sensing; Mapping; Coral reef; Seagrass; Mangrove. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/00291/40267/38646.pdf |
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| Deborde, Jonathan; Marchand, Cyril; Molnar, Nathalie; Della Patrona, Luc; Meziane, Tarik. |
| In mangrove ecosystems, strong reciprocal interactions exist between plant and substrate. Under semi-arid climate, Rhizophora spp. are usually predominant, colonizing the seashore, and Avicennia marina develops at the edge of salt-flats, which is the highest zone in the intertidal range. Along this zonation, distribution and speciation of C, Fe, S, N, and P in sediments and pore-waters were investigated. From the land-side to the sea-side of the mangrove, sediments were characterized by I/ increase in: (i) water content; (ii) TOC; (iii) mangrove-derived OM; II/ and decrease in: (i) salinity; (ii) redox; (iii) pH; (iv) solid Fe and solid P. Beneath Avicennia and Rhizophora, TS accumulated at depth, probably as a result of reduction of iron oxides and... |
| Tipo: Text |
Palavras-chave: Mangrove; Zonation; Biogeochemistry; New Caledonia. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00251/36252/34802.pdf |
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| PINHEIRO,MARCELO A.A.; SOUZA,MARCELO R.; SANTOS,LUCIANA C.M.; FONTES,ROBERTO F.C.. |
| ABSTRACT Ucides cordatus is a relevant fishery resource of Brazilian mangroves and requires legal normative to sustainable use based on stock assessment and management. This study evaluated some population parameters (structure, density, abundance, fishery potential and stock) of this crab species in Brazil Southeast (São Paulo, State), discussing the use of the results to delineate fishery management strategies. Density was monthly evaluated (September 1998 to August 1999), using five sample quadrats of 2x2 m. Density (ind.m-2) was indirectly estimated by counting the opened (with biogenic activity) and closed galleries, and contrasted with flooding level by tides using the vertical distribution of macroalgae in the base of trees. Density of U. cordatus... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crab; Crustacean; Fishery; Management; Mangrove; Population. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000401381 |
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| Auda, Yves; Populus, Jacques; Blasco, F. |
| GAMBAS est un programme de la Commission Européenne de recherche sur le développement durable de l'aquaculture dans le delta du Mékong. La pluridisciplinarité des équipes impliquées dans ce programme a permis de cerner précisément l'impact de l'aquaculture sur l'écosystème « mangrove ». Dans cette action, la télédétection a joué un rôle fédérateur des connaissances acquises au cours des quatre années de collaboration franco-vietnamienne (2001-2004). Les données botanique, d 'écologie aquatique et de socio-économie collectées dans une quarantaine de stations réparties dans deux provinces (Camau et TraVinh) sont analysées conjointement grâce au lien spatial assuré par la télédétection. Plus précisément, une zonation écologique, un indice de confinement ...,... |
| Tipo: Text |
Palavras-chave: Mangrove; Télédétection; Mékong(Vietnam). |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/00197/30863/29231.pdf |
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| Registros recuperados: 79 | |
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