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| Registros recuperados: 196 | |
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| LEE,MATTHEW R; CASTILLA,JUAN CARLOS; FERNÁNDEZ,MIRIAM; CLARKE,MARCELA; GONZÁLEZ,CATHERINE; HERMOSILLA,CONSUELO; PRADO,LUIS; ROZBACZYLO,NICOLAS; VALDOVINOS,CLAUDIO. |
| A comprehensive literature review was conducted to determine the species richness of all the possible taxa of free-living benthic marine invertebrates in Chile. In addition, the extent of endemism to the Pacific Islands and deep-sea, the number of non-indigenous species, and the contribution that the Chilean benthic marine invertebrate fauna makes to the world benthic marine invertebrate fauna was examined. A total of 4,553 species were found. The most speciose taxa were the Crustacea, Mollusca and Polychaeta. Species richness data was not available for a number of taxa, despite evidence that these taxa are present in the Chilean benthos. The Chilean marine invertebrate benthic fauna constitutes 2.47 % of the world marine invertebrate benthic fauna. There... |
| Tipo: Journal article |
Palavras-chave: Chile; Species richness; Benthos; Free-living invertebrates. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2008000100005 |
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| Souza,José R. B. de; Borzone,Carlos A.. |
| The distribution, population dynamics and secondary production of the polychaete Euzonus furciferus was studied in Atami Beach (Southern Brazil), from February 1992 to March 1993. Euzonus furciferus Ehlers, 1897 is the only deposit feeder species of the upper intertidal region. The organisms were present in the sandy beach all over the year, concentrated in a narrow band, and reaching maximal densities of 3,029 individuals m-2. Peaks of abundance occurred in September 1992, with a mean of 681.8 individuals m-2. Recruitment occurred in winter, with a peak in July. Mean annual biomass was estimated in 0.218 gAFDW m-2, with a total annual production of 0.466 gAFDW m-2 y-1, giving a P/B ratio of 2.13 y-1. Similar values were found for a filter-feeder... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Annelida; Benthos; Deposit feeder; Intertidal; Macrofauna. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000400034 |
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| MARIA,TATIANA F.; VANAVERBEKE,JAN; VANREUSEL,ANN; ESTEVES,ANDRÉ M.. |
| ABSTRACT In this review, we summarize existing knowledge of the ecology of sandy-beach nematodes, in relation to spatial distribution, food webs, pollution and climate change. We attempt to discuss spatial scale patterns (macro-, meso- and microscale) according to their degree of importance in structuring sandy-beach nematode assemblages. This review will provide a substantial background on current knowledge of sandy-beach nematodes, and can be used as a starting point to delineate further investigations in this field. Over decades, sandy beaches have been the scene of studies focusing on community and population ecology, both related to morphodynamic models. The combination of physical factors (e.g. grain size, tidal exposure) and biological interactions... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiversity; Benthos; Distribution patterns; Food webs; Climatic changes. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000501635 |
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| Beghelli,Frederico Guilherme de Souza; Santos,André Cordeiro Alves dos; Urso-Guimarães,Maria Virgínia; Calijuri,Maria do Carmo. |
| The purpose of this work was to verify the benthic macroinvertebrates community responses through environmental factors along a headwater tropical reservoir. Samplings were taken with a Van-Veen grab along the reservoir in littoral and profundal regions and in the headwater, next to the dam and the middle of the reservoir. Samples were taken during both wet and dry seasons. Dissolved oxygen concentrations, electric conductivity, temperature and pH near the sediment have been performed in situ, at every sampling station by using a multiprobe and Secchi disc. Total water phosphorus and chlorophyll a concentrations were analyzed to determine the trophic state index. Sediment's organic matter, total phosphorus, nitrogen concentrations and granulometric... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Benthos; Chironomidae; Limnology; Bioindicator; Water quality. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000400012 |
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| Rosa-Filho,José Souto; Bemvenuti,Carlos Emílio; Elliott,Michael. |
| This study aimed to predict the biological parameters (species composition, abundance, richness, diversity and evenness) of benthic assemblages in southern Brazil estuaries using models based on environmental data (sediment characteristics, salinity, air and water temperature and depth). Samples were collected seasonally from five estuaries between the winter of 1996 and the summer of 1998. At each estuary, samples were taken in unpolluted areas with similar characteristics related to presence or absence of vegetation, depth and distance from the mouth. In order to obtain predictive models, two methods were used, the first one based on Multiple Discriminant Analysis (MDA), and the second based on Multiple Linear Regression (MLR). Models using MDA had... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Prediction; Models; Benthos; Estuary; Southern Brazil. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000400015 |
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| Gutiérrez,Dimitri; Quipúzcoa,Luis; Enríquez,Edgardo. |
| The oxygen minimum zone (OMZ) off the Peruvian coast, though shallower and more intense than other OMZs, exhibits a spatial distribution that varies with latitude, depth and distance to the coast. The spatial variability in oxygen content imposes latitudinal and bathymetric zonations of the benthic communities. Nevertheless the spatial patterns of the benthic communities are also modulated by the bottom topography and the sedimentary environments, which in turn are controlled to a large extent by the poleward undercurrent. While the bathymetric patterns of the macro- and meiobenthos have been previously described, latitudinal changes have received less attention. We found that, in parallel with opposed latitudinal gradients of oxygen and fresh organic... |
| Tipo: Journal article |
Palavras-chave: OMZ; Peru; Benthos; Thioploca; Pearson and Rosenberg model. |
| Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382006000300008 |
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| Алёмов, С. В.; Бурдиян, Н. В.; Гусева, Е. В.; Шадрина, Т. В.; Енина, Л. В.; Сосновская, Р. В.; Волков, Н. Г.; Тихонова, Е. А.. |
| Проанализировано распределения бактерио-, мейо- и макрозообентоса в зависимости от физико-химических характеристик донных осадков бухты Южная (г. Севастополь, Чёрное море). Содержание нефтяных углеводородов составляло 607,2 – 1458,0 мг/100 г сух. осадка. В вершинной части бухты отмечено снижение концентраций нефтяных углеводородов. Общая численность гетеротрофных бактерий находилась в пределах 104 кл./г, плотность мейобентосного населения 9500 – 197800 экз./м2. Наибольшая средняя плотность мейобентоса приурочена к кутовой части бухты. Соотношение основных групп мейобентоса указывает на более благоприятные условия для существования мейобентосных организмов в вершине бухты. В составе макрозообентоса отмечен 31 таксон. Численность макрозообентоса не превышает... |
| Tipo: Journal Contribution |
Palavras-chave: Hydrocarbons; Benthos; Benthos; Hydrocarbons; Http://aims.fao.org/aos/agrovoc/c_878; Http://aims.fao.org/aos/agrovoc/c_3719. |
| Ano: 2007 |
URL: http://repository.ibss.org.ua/dspace/handle/99011/580 |
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| Лосовская, Г. В.; Синегуб, И. А.; Рыбалко, А. А.. |
| На большом фактическом материале (222 пробы обрастания, 123 пробы бентоса), собранном в 2001 г., изучены видовой состав, количественное развитие полихет и их экологическая структура в акватории Одесского порта. Зарегистрировано 19 видов полихет (17 видов в бентосе и 9 – в обрастании гидротехнических сооружений). Наиболее массовыми видами были Neanthes succinea, Polydora limicola и Heteromastus filiformis. Среди основных жизненных форм в обрастании и в бентосе доминировали интра-эпибионты. В обрастании преобладали полифаги, в бентосе – полифаги и детритофаги. Средние численность и биомасса полихет в обрастании были выше, чем в бентосе; на ракуше выше, чем на илах. На участке с относительно свободным водообменом средняя численность была в 4, а средняя... |
| Tipo: Journal Contribution |
Palavras-chave: Полихеты; Обрастание; Бентос; Численность; Биомасса; Одесский порт; Polychaetes; Fouling; Benthos; Abundance; Biomass; Odessa port Biomass Fouling Benthos Abundance Benthos Biomass Fouling http://aims.fao.org/aos/agrovoc/c_878 http://aims.fao.org/aos/agrovoc/c_926 http://aims.fao.org/aos/agrovoc/c_25400. |
| Ano: 2004 |
URL: http://repository.ibss.org.ua/dspace/handle/99011/68 |
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| Zamprogno,Gabriela C.; Fernandes,Flavio C.; Fernandes,Luiz L.. |
| The relationships between environmental factors and temporal and spatial variations of benthic communities of three rocky shores of the state of Espírito Santo, Southeast Brazil, were studied. Sampling was conducted every three months, from August 2006 to May 2007, using intersection points. Chthamalus bisinuatus (Pilsbry, 1916) (Crustacea) and Brachidontes spp. (Mollusca) were the most abundant taxa, occupying the upper level of the intertidal zone of the rocky shore. The species richness was higher at the lower levels. The invasive species Isognomon bicolor (C. B. Adams, 1845) (Mollusca) occurred at low densities in the studied areas. The clustering analysis dendrogram indicated a separation of communities based on exposed and sheltered areas. According... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Midlittoral; Wave exposure; Benthos; Espírito Santo. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212012000400003 |
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| Zilli,Florencia; Barco,Julia del; Vanzetti,Agustín. |
| ABSTRACT Currently, it is widely recognized that invertebrates play key roles in neotropical floodplains and in many other environments worldwide. However, little information has been published concerning their biometry, in spite that it represents an essential tool for many different studies. Here, we provided length-mass and length-length relationships by fitting the linearized model (log10 Y = log10a + b log10 X) and several mean biomass ratios ± SE for bivalves, gastropods, quironomids, ephemeropterans, oligochaetes and hirudineans. We measured, weighed, oven dried and incinerated to ashes specimens collected from 2005 to 2014 in the Paraná River, Argentina. The lineal equations had fit levels higher than 75% in most of the significant regressions.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allometry; Organic matter; Paraná River; Wetlands; Benthos; Pleuston. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212017000100214 |
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| Colling,Leonir A.; Bemvenuti,Carlos E.; Gandra,Michel S.. |
| The aim of this study is to analyze and relate the spatial-temporal variability of macrozoobenthic assemblages to bottom characteristics and salinity fluctuations, in an estuarine shallow water region of Patos Lagoon. Monthly samples, between September 2002 and August 2003, were taken on six sampling stations (distant 90 m). Three biological samples with a 10 cm diameter corer, one sample for sediment analysis, fortnightly bottom topography measurements, and daily data of temperature and salinity were taken from each station. Two biotic and environmental conditions were identified: the first corresponding to spring and summer months, with low macrozoobenthos densities, low values of salinity, small variations in bottom topographic level and weak... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Seasonal variability; Benthos; Estuary; Abiotic variables; Sublittoral habitats. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212007000300007 |
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| Registros recuperados: 196 | |
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