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| Registros recuperados: 104 | |
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| ARIANO,Ana Paula Ramos; SILVA,Ivone Vieira da. |
| ABSTRACT Leaves have a variety of morphological and anatomical characters mainly influenced by climatic, edaphic and biotic factors. The aim of this study was to describe the anatomical leaf traits of Qualea parviflora from three phytophysiognomies. The studied phytophysiognomies were Amazon Savannah on rocky outcrops (ASR), Transition Rupestrian Cerrado (TRC), and Cerradão (CDA). Freehand sections of the leaf blade were made and stained with 0.5% astra blue and with basic fuchsin. From the adaxial and abaxial leaf surface, freehand paradermal sections were made for epidermis analysis. The Jeffrey´s method, with modifications, was used in the epidermis dissociation process. The samples from the TRC phytophysiognomy had relatively smaller ordinary epidermal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Adaptations; Amazon; Cerrado; Environmental conditions. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672016000200119 |
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| Viana, Lucilene Finoto; Universidade Estadual de Mato Grosso do Sul; Tondato, Karina Keyla; Universidade Federal do Rio Grande do Sul; Súarez, Yzel Rondon; Universidade Estadual de Mato Grosso do Sul; Lima-Junior, Sidnei Eduardo; Universidade Estadual de Mato Grosso do Sul. |
| In this study, it was examined the reproductive biology of Astyanax. altiparanae, in streams with different levels of environmental disturbance in the Ivinhema river basin (Mato Grosso do Sul State, Brazil). Samplings were conducted between July 2001 and November 2011, at 101 sites, using sieves, seining nets, gill nets and electrofishing. Streams were classified into three levels of environmental integrity. We analyzed 735 specimens, 410 females and 325 males. Females predominated in impacted streams and both sexes presented nearly the same pattern of length distribution in the three levels of environmental integrity. Females reached gonadal maturity with greater lengths (L50 = 55.67mm) in altered and impacted streams and had higher reproductive activity... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Environmental conditions; Fish; Reproductive ecology Zoologia; Ecologia 2.04.06.00-2; 2.05.03.00-8 Zoologia; Ecologia. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/21052 |
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| Simioni, Priscila Fernanda; Pessoa, Marcos José Gomes; Cardoso, Maialu Antunes; Cabral, Fabiana Ferreira; Teixeira, Soraia Oliveira; Silva, Ivone Viera da. |
| Savannas of the Amazon Region of Mato Grosso State have an unique ecological identity due to the complexity of the Cerrado-Amazon transition region, their geographical isolation and the physical-chemical properties of the soil. This study aimed to characterize the leaf anatomy of Xylopia aromatica, and to identify potential adaptive traits to the xeric environment. We collected adult leaves from X. aromatica from a Amazonian savannah located in the Nova Canãa do Norte city, Mato Grosso. The leaves were fixed and stored in 70% ethanol. Cross sections were obtained by free hand with the aid of a razor blade, stained with astra blue and basic fuchsin, and mounted on histological slides. Characters considered adaptive: thick cuticle, epidermal cells with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2.03.02.03-7 Ecological anatomy; Adaptive strategies; Environmental conditions; Xerophytes. 2.03.00.00-0 Botânica. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/37334 |
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| EZQUIAGA,MARIA CECILIA; RIOS,TATIANA A.; ACTIS,ESTEBAN A.; CASSINI,GUILLERMO H.; ABBA,AGUSTIN M.; SUPERINA,MARIELLA. |
| Abstract The pichi (Zaedyus pichiy; Cingulata: Chlamyphoridae) is an armadillo whose ectoparasite fauna is composed of ticks and fleas. Fleas were collected from 218 pichis in southern Mendoza, Argentina, in summer and winter of 2015 and 2016. Prevalences were analyzed and differences in the intensities of the total number of fleas related to host (age, sex, weight, size and physical condition) and environment-related (seasonality and year) factors evaluated. Phthiropsylla agenoris was the only species found. Intensities of fleas were higher in 2015, in juveniles, and in males. Individuals with poor physical condition were more parasitized than those with good or normal body condition. The main explanatory variable was sampling year. This factor was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: ENSO; Environmental conditions; Mendoza province; Phthiropsylla agenoris. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652020000300702 |
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| Matos,Fábio Santos; Ciappina,Angelina Luzia; Rocha,Ednaldo Candido; Almeida,Luciane Madureira. |
| ABSTRACT Latex from Jatropha curcas L. exhibits biotechnological potential for the development of biodiesel and drugs. Little is known about the collection methods and latex productivity of this species. In order to garner information on the use of J. curcas latex, factors that influence production by this species were assessed. As a result, no significant difference was found between the volume of latex collected in the stem and the branches. With respect to environmental characteristics, climatic conditions, such as low temperatures and rainfall, affected production. The period of low temperatures and leaf fall occurs after fruit harvest and, in the absence of strong sinks, the plant can use the assimilates to generate greater latex production. Multiple... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Physic nut; Biodiesel; Pharmacological potential; Environmental conditions. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000100074 |
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| Léchaudel,Mathieu; Joas,Jacques. |
| Mango, a tropical fruit of great economic importance, is generally harvested green and then commercialised after a period of storage. Unfortunately, the final quality of mango batches is highly heterogeneous, in fruit size as well as in gustatory quality and postharvest behaviour. A large amount of knowledge has been gathered on the effects of the maturity stage at harvest and postharvest conditions on the final quality of mango. Considerably less attention has been paid to the influence of environmental factors on mango growth, quality traits, and postharvest behaviour. In this paper, we provide a review of studies on mango showing how environmental factors influence the accumulation of water, structural and non-structural dry matter in the fruit during... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Environmental conditions; Fruit load; Irrigation; Shelf life; Size; Taste. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202007000400004 |
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| Costa,Mônica S. S. De M.; Carneiro,Leocir J.; Costa,Luiz A. De M.; Pereira,Dercio C.; Lorin,Higor E. F.. |
| ABSTRACT The agro-industrialization of animal products has led to a significant waste generation, which has been stabilized by composting process in specialized plants. Waste stabilization time on composting depends on the handling used. 12 treatments were performed, three frequency turnings combined with two environmental conditions (with and without coverage of the composting area) and with and without commercial inoculant, whose results were submitted to multiple regression analysis. Windrows turned twice a week in the first month had adequate temperature control and stabilization time of 83.5 and 95.5 days for uncovered and covered windrows, respectively. Uncovered windrows have accelerated the process in 10 days on average, with the disadvantage of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Environmental conditions; Inoculation; Turnings. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000601206 |
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| Pavlova, E. V.; Murina, V. V.; Kemp, R. B.; Wilson, J. G.; Parchevsky, V. P.. |
| The first comprehensive data on species composition, abundance, biomass and survival (living/dead ratio) of meroplankton in Sevastopol Bay (Black Sea) are presented. Marked differences were observed between the years 1998 and 1999, and these could be attributed to the hydrology and the eutrophication status of the different parts of the Bay. Shannon index and selected community parameters (number of species, biomass, numbers of individuals) indicated that South Bay was the worst affected part of the Bay with the greatest eutrophication impact on the meroplankton. The early larval stages of the barnacle Balanus improvisus and of the polychaete Polydora sp. were the most sensitive to presumed environmental stresses. It is suggested that the mortality of... |
| Tipo: Journal Contribution |
Palavras-chave: Abundance; Biomass; Survival; Meroplankton; Environmental conditions; Sevastopol Bay; Black Sea; Численность; Биомасса; Выживаемость; Меропланктон; Среда; Севастопольская бухта; Черное море Abundance Biomass Survival Meroplankton Environmental conditions Biomass Survival Environmental conditions http://aims.fao.org/aos/agrovoc/c_926 http://aims.fao.org/aos/agrovoc/c_7538 http://aims.fao.org/aos/agrovoc/c_32980. |
| Ano: 2007 |
URL: http://repository.ibss.org.ua/dspace/handle/99011/301 |
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| Galeron, Joelle; Sibuet, Myriam; Mahaut, Ml; Dinet, A. |
| Three major size classes of the benthic metazoan communities (megafauna, macrofauna and meiofauna) were investigated simultaneously at 3 sites in the tropical Northeast Atlantic. The sites varied in their level of surface primary productivity (eutrophic, mesotrophic and oligotrophic). Results for 3 cruises in 3 seasons (Eumeli 2, winter 1991; Eumeli 3, autumn 1991; Eumeli 4, spring 1992) are given for each size class in terms of taxonomic composition, density and biomass. The benthic communities did not exhibit evidence of seasonal variation, but there were substantial differences in the quantitative structure of the metazoan communities between the 3 sites. Total metazoan density and biomass, as well as density and biomass of each size class, decreased... |
| Tipo: Text |
Palavras-chave: Deep sea; Tropical Atlantic; Meiofauna; Macrofauna; Megafauna; Taxonomic composition; Density; Biomass; Environmental conditions. |
| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/00000/10519/7602.pdf |
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| De Busserolles, F.; Sarrazin, Jozee; Gauthier, Olivier; Gelinas, Y.; Fabri, Marie-claire; Sarradin, Pierre-marie; Desbruyeres, Daniel. |
| Trophic relationships in Bathymodiolus azoricus mussel bed communities on the Tour Eiffel hydrothermal edifice (Lucky Strike) were assessed using delta C-13 and delta N-15 signatures from 14 hydrothermal species. The nutritional basis of B. azoricus was also investigated with delta S-34. Faunal samples and environmental data (temperature, pH, total dissolved sulfide, iron and copper concentrations) were collected from 12 different locations on the edifice. Chemical conditions varied between microhabitats, and were all correlated to temperature. Carbon and nitrogen isotopic results revealed the presence of two, apparently independent, trophic groups. The first was composed of symbiont-bearing fauna (B. azoricus and their associated polychaetes... |
| Tipo: Text |
Palavras-chave: Lucky Strike (37 degrees 17.29 ' N 32 degrees 16.45 ' W); Mid Atlantic Ridge; Food webs; Hydrothermal springs; Environmental conditions; Stable isotopes. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-7312.pdf |
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| Claireaux, Guy; Lefrancois, Christel. |
| Investigating the biological mechanisms linking environmental variability to fish production systems requires the disentangling of the interactions between habitat, environmental adaptation and fitness. Since the number of environmental variables and regulatory processes is large, straightening out the environmental influences on fish performance is intractable unless the mechanistic analysis of the 'fish-milieu' system is preceded by an understanding of the properties of that system. While revisiting the key points in our currently poorly integrated understanding of fish ecophysiology, we have highlighted the explanatory potential contained within Fry's ( Fry 1947 Univ. Toronto Stud. Biol. Ser. 55, 1 - 62) concept of metabolic scope and categorization of... |
| Tipo: Text |
Palavras-chave: Fish; Environmental adaptation; Environmental conditions; Scope for metabolic activity. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-3306.pdf |
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| Registros recuperados: 104 | |
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