Consulta: subjectFacets:"Microhabitat"
Registros recuperados: 30
Data/hora: 13/06/2024 12:17:11

Ecological relations between mangrove leaf litter and the spatial distribution of the gastropod Melampus coffeus in a fringe mangrove forest
Provedor de dados: 76
Autores: Tavares,Diva S.; Maia,Rafaela C.; Rocha-Barreira,Cristina; Matthews-Cascon,Helena.
Leaf litter represents a food source to many organisms that may directly contribute to organic matter decomposition. In addition, the physical presence of these vegetal detritus contributes for the modification of some environmental areas and produce microhabitats that may act as a refuge against predators and desiccation for many animals. The pulmonate gastropod Melampus coffeus (Linnaeus, 1758) (Ellobiidae) is a very common specie in Atlantic Coast mangrove forests and feeds on fallen mangrove leaves. It was hypothesized that the spatial distribution of Melampus coffeus is directly affected by mangrove leaf litter biomass deposition. Thus, this research aimed at evaluating the spatial distribution of these gastropods in relation to the biomass of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ellobiidae; Macrodetritivore; Microhabitat; Pacoti river; Rhizophora mangle.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212015000100035

Hydrothermal faunal assemblages and habitat characterisation at the Eiffel Tower edifice (Lucky Strike, Mid-Atlantic Ridge)
Provedor de dados: 5
Autores: Cuvelier, Daphne; Sarradin, Pierre-marie; Sarrazin, Jozee; Colaco, Ana; Copley, Jon T.; Desbruyeres, Daniel; Glover, Adrian G.; Santos, Ricardo Serrao; Tyler, Paul A.
The Eiffel Tower edifice is situated in the Lucky Strike hydrothermal vent field at a mean depth of 1690 m on the Mid-Atlantic Ridge (MAR). At this 11-m-high hydrothermal structure, different faunal assemblages, varying in visibly dominant species (mussels and shrimp), in mussel size and in density of mussel coverage, were sampled biologically and chemically. Temperature and sulphide (Sigma S) were measured on the different types of mussel-based assemblages and on a shrimp-dominated assemblage. Temperature was used as a proxy for calculating total concentrations of CH4. Based on the physico-chemical measurements, two microhabitats were identified, corresponding to (i) a more variable habitat featuring the greatest fluctuations in environmental variables...
Tipo: Text
Palavras-chave: Faunal assemblage; Hydrothermal vent; Microhabitat; Mid-Atlantic Ridge; Physico-chemical characterisation.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00035/14648/13996.pdf

Living (stained) benthic foraminifera from the Mozambique Channel (eastern Africa): Exploring ecology of deep-sea unicellular meiofauna
Provedor de dados: 5
Autores: Fontanier, Christophe; Garnier, Eline; Brandily, Christophe; Dennielou, Bernard; Bichon, S.; Gayet, Nicolas; Eugene, Thibaut; Rovere, Mickael; Gremare, A.; Deflandre, B.
Live (Rose-Bengal stained) deep-sea foraminiferal faunas have been studied at four stations between 530–3200-m depth in the Mozambique Channel (eastern Africa) to understand how complex environmental conditions (e.g., organic matter, oxygenation) control their ecological structure (i.e., diversity, density, and microhabitats). Two upper-slope stations, located at 530- and 780-m depth off Madagascar, are bathed by well-oxygenated bottom waters. They are characterized by fine sediments enriched in highly degraded organic matter (low amino-acid bio-availability and reduced chlorophyllic freshness). Mineralization of organic compounds results in relatively moderate oxygen penetration depth (i.e., 15 and 30 mm) in sediment. Interestingly, foraminiferal species...
Tipo: Text
Palavras-chave: Mozambique Channel; Foraminifera; Diversity; Microhabitat; Organic matter.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00344/45505/45057.pdf

Stable isotopes in deep-sea living (stained) foraminifera from the Mozambique Channel (eastern Africa): multispecies signatures and paleoenvironmental application
Provedor de dados: 5
Autores: Fontanier, Christophe; Sakai, Saburo; Toyofuku, Takashi; Garnier, Eline; Brandily, Christophe; Eugene, Thibaut; Deflandre, Bruno.
Oxygen and carbon isotopes (δ18O and δ13C) have been investigated in carbonate tests of deep-sea foraminifera living in the Mozambique Channel (eastern Africa) to understand how environmental constraints (e.g., organic matter, oxygenation) control the intra- and interspecific variability of isotopic signatures. 197 living individuals, including eight different species, from various microhabitats within the sediment were sorted from sediment samples gathered at two stations on the Malagasy upper slope. Results show that the δ18O values of foraminiferal taxa were not controlled by microhabitat pattern. They presented tremendous and intriguing intraspecific variability that is not explained by the classical ontogenetic effect. The δ13C values of infaunal...
Tipo: Text
Palavras-chave: Oxygen and carbon isotopes; Deep-sea foraminifera; Organic matter; Oxygenation; Microhabitat.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00357/46831/46979.pdf

BIGORNO. Biodiversité Intertidale sud Gascogne Observation et Recherche de Nouveaux Outils de surveillance et d'aide à la décision - Rapport fiinal
Provedor de dados: 5
Autores: De Casamajor, Marie-noelle; Lalanne, Yann; Huguenin, Laura; Marticorena, Julien; Lissardy, Muriel; Bru, Noelle; D'Amico, Franck; Liquet, Benoît.
This report presents the results obtained during the BIGORNO project whose main objective is to overcome knowledge gaps on the biocenoses of the southern sub-region "Bay of Biscay" to propose a sampling protocol adapted to biogeographic and environmental specific conditions. A stratified random sampling design considering spatial heterogeneity has been implemented. Biodiversity was considered on 0.1 m²quadrats. These data have revealed the organization of benthic communities and the relevant taxa to be considered (species or assemblages of indicator species) in the context of establishing perennial monitoring of intertidal habitats. Proposals are made to implement the descriptors and indicators defined in the Marine Strategy Framework Directive (MSFD).
Tipo: Text
Palavras-chave: Côte basque; Estran rocheux; Microhabitats; Espèces indicatrices; Analyses multivariées; DCSMM; Basque coast; Intertidal rocky shore; Microhabitat; Indicator species; Multivariate analysis; MFSD.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00371/48229/48893.pdf

Description, distribution and microhabitats of a new species of Tisbe (Copepoda: Harpacticoida: Tisbidae) from a deep-sea hydrothermal vent field at the Mid-Atlantic Ridge (37 degrees N, Lucky Strike)
Provedor de dados: 5
Autores: Ivanenko, Viatcheslav; Ferrari, Frank D.; Defaye, Danielle; Sarradin, Pierre-marie; Sarrazin, Jozee.
A new species, Tisbe dahmsi sp. nov. (Crustacea, Copepoda: Harpacticoida: Tisbidae) is described from the Eiffel Tower edifice located in the Lucky Strike vent field (37 degrees N) (Mid-Atlantic Ridge MAR, 1698 m). The samples were collected in colonization experiments (SMAC arrays) that were deployed in 1997 during the MARVEL cruise and recovered in 1998 during the PICO cruise. Other specimens were collected during the MoMARETO cruise during which a physico-chemical characterization of copepod microhabitats was done. The new species belongs to the T. gracilis group based on similarities of the spine-like inner seta on the proximal endopodal segment of the male second swimming leg, which is terminally bifurcate. Re-examination of the closest relative and...
Tipo: Text
Palavras-chave: Copepoda; Harpacticoida; Tisbidae; Deep-sea; Hydrothermal vent; Mid-Atlantic Ridge; Systematics; Ecology; Microhabitat; In situ experiments; Physico-chemical factors.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00029/14066/11306.pdf

Exposure to solar radiation drives organismal vulnerability to climate: evidence from an intertidal limpet
Provedor de dados: 5
Autores: Chapperon, Coraline; Volkenborn, Nils; Clavier, Jacques; Seite, Sarah; Seabra, Rui; Lima, Fernando P.
Understanding the physiological abilities of organisms to cope with heat stress is critical for predictions of species’ distributions in response to climate change. We investigated physiological responses (respiration and heart beat rate) of the ectotherm limpet Patella vulgata to heat stress events during emersion and the role of seasonal and microclimatic acclimatization for individual thermal tolerance limits. Individuals were collected from 5 microhabitats characterized by different exposure to solar radiation in the high intertidal zone of a semi-exposed rocky shore in winter and summer of 2014. Upper thermal tolerance limits (heat coma temperatures - HCTs, and heart rate Arrhenius break temperatures - ABTs) were determined for individuals from each...
Tipo: Text
Palavras-chave: Patella vulgata; Heat stress; Acclimatization; Thermal tolerance; Microhabitat; Intertidal.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00318/42939/42447.pdf

Distribution of Mysidium integrum (Tattersall) (Crustacea-mysidacea) in Venezuelan coral habitats
Provedor de dados: 16
Autores: Zoppi de Roa, Evelyn; Pedro Alonso, G.
ZOPPI DE ROA, EVELYN &amp; PEDRO ALONSO G.: Distribution of Mysidium integrum (Tattersall) (Crustacea: Mysidacea) in Venezuelan coral habitats. Studies Nat. Hist. Caribbean Region 73, Amsterdam 1997: 55-62. This paper reports the occurrence, distribution and some ecological aspects of mysids in six coral habitats along the northern coast of Venezuela. Collections of mysid fauna were made during various months in the years 1980-1983, with simultaneous measurement of environmental conditions. Only Mysidium integrum (TATTERSALL 1951) has been found to be present in the protected zones of various coral species, and between the spines of the sea urchin Diadema antillarum (Philippi). Depth of water and type of association appear to be critical factors affecting...
Tipo: Article / Letter to the editor
Palavras-chave: Microhabitat; Sea urchin; Mysidium integrum; Venezuela.; Coral.
Ano: 1997
URL: http://www.repository.naturalis.nl/record/503185

Intertidal life: field observations on the clingfish Gobiesox barbatulus in southeastern Brazil
Provedor de dados: 83
Autores: Pires,Tiago H. S; Gibran,Fernando Z.
The clingfish Gobiesox barbatulus shows nocturnal feeding activity, spending most part of the day stationary and adhered to the inferior part of stones. To feed, this species uses the sit-and-wait and particulate feeding tactics. It shows a carnivorous feeding habit mostly consuming small benthic crustaceans. It can move in two ways: (1) "stone-by-stone", sliding its ventral sucker disc across each stone and (2) "surf", when it takes advantage of the energy of the ebbing tide to quickly cross a distance up to four times its body length. Its reproductive season occurs between the end of spring and the beginning of summer, during which time it lays about 2,000 adhesive eggs of 1 mm each in a single layer under stones. It has more than one egg-laying session...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Activity; Microhabitat; Diet; Reproduction; Gobiesocidae.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000100022

Resource use by two electric fishes (Gymnotiformes) of the National Forest Saracá-Taquera, Oriximiná, Pará
Provedor de dados: 83
Autores: Soares,Bruno E.; Rosa,Daniela C. O.; Silva,Nathália C. S.; Albrecht,Miriam P.; Caramaschi,Érica P.
ABSTRACT Fishes of the order Gymnotiformes have high diversity of oral and head morphology, which suggests trophic specializations within each clade. The aim of this study was to describe resource use patterns by two fish species (Gymnorhamphichthys rondoni and Gymnotus coropinae) in the National Forest Saracá-Taquera, Oriximiná - Pará, analyzing microhabitat use, diet composition, feeding strategies, niche breadth and niche overlap. Stomach contents of 101 individuals (41 G. rondoni and 60 G. coropinae), sampled in 23 headwater streams were analyzed and volume of food items was quantified to characterize their feeding ecology. Gymnorhamphichthys rondoni was captured mainly on sandy bottoms, whereas G. coropinae in crevices. Both species had a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon; Diet overlap; Feeding; Microhabitat; Streams.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000200204

Electivities and resource use by an assemblage of lizards endemic to the dunes of the São Francisco River, northeastern Brazil
Provedor de dados: 84
Autores: Rocha,Pedro L.B.; Rodrigues,Miguel T.
This study describes the pattern of resource use by one assemblage of lizards inhabiting a desert-like dune field in the Brazilian Caatinga. We evaluated food and microhabitat availability and phases of lizard activity, as well as use of, and electivities for, food and microhabitats. Six of the seven most abundant species are endemic to the dunes, and their diets under-represented arthropods possessing chemical defenses. The two fossorial gymnophthalmids were similar in presenting no electivities for microhabitat but differed in diet, electivities for food and phase of activity. The five species of epigeous lizards include one group presenting positive electivities for protected and shaded microhabitats (Procellosaurinus erythrocercus, Briba brasiliana,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caatinga; Diet; Dunes; Electivity; Microhabitat; Phase of activity; Lizards.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492005002200001

DIET OF DENDROPSOPHUS MICROCEPHALUS AND SCARTHYLA VIGILANS (ANURA: HYLIDAE) AT A LOCALITY IN NORTH-WESTERN VENEZUELA WITH NOTES ON MICROHABITAT OCCUPATION
Provedor de dados: 84
Autores: FONSECA-PÉREZ,KIMBERLYN A.; MOLINA,CÉSAR; TÁRANO,ZAIDA.
ABSTRACT The coexistence of species with similar ecological requirements (food, space, time) has typically drawn attention of researchers because competition for resources is expected to be high. The diet and microhabitat occupation of two morphologically and ecologically similar species of Hylidae (Anura), Dendropsophus microcephalus and Scarthyla vigilans, were analyzed at a locality in north-western Venezuela, with the aim of addressing the potential for space and food competition between them. Diet was estimated through the analysis of stomach contents and microhabitat occupation was estimated through recordings of perch type, height and horizontal distance to water. Thirty-six prey categories (32 families, 4 orders) of arthropods were identified: 30...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diet; Generalist; Niche overlap; Resource partitioning; Microhabitat; Morphometry.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492017000700093

Natural History of Pseudoboine Snakes
Provedor de dados: 84
Autores: Gaiarsa,Marília P.; Alencar,Laura R.V. de; Martins,Marcio.
Even though natural history information is crucial for answering key ecological, evolutionary, and conservation questions, basic studies are still lacking for Neotropical snakes. This study aims at contributing to the knowledge of the Neotropical tribe Pseudoboini, based on literature data, analysis of museum specimens and unpublished data. The tribe is mainly composed of moderate-sized snakes, although small and large-sized snakes also occur in the clade. Mean fecundity ranged from two (Rodriguesophis iglesiasi) to 29 eggs (Clelia plumbea) and the species are predominantly terrestrial and nocturnal. Most species are diet specialists and lizards are the most commonly consumed prey (found in the diet of 29 species), followed by small mammals (consumed by 20...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ecology; Diet; Microhabitat; Reproduction; Dipsadidae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492013001900001

Estabelecimento e padrões sazonais de produtividade de Kielmeyera coriacea (Spr) Mart. nos cerrados do Planalto Central: efeitos do estresse hídrico e sombreamento
Provedor de dados: 88
Autores: NARDOTO,GABRIELA B.; SOUZA,MÔNICA P.; FRANCO,AUGUSTO C.
Kielmeyera coriacea é uma árvore caducifólia, típica dos cerrados do Planalto Central. Neste estudo, investigou-se como as mudanças no potencial da água do solo (&lt;FONT FACE="Symbol"&gt;Y&lt;/font&gt;s) e a luz afetaram a produtividade e a sobrevivência de indivíduos jovens de Kielmeyera coriacea transplantados na matriz herbácea de uma vegetação do cerrado, em que os elementos arbustivos e arbóreos são esparsos (campo sujo). Indivíduos de 2 meses de idade foram transplantados na primeira metade da estação chuvosa (novembro-dezembro) de 1994. A maior parte da mortalidade dos indivíduos de Kielmeyera coriacea ocorreu nos primeiros meses após o transplante, durante a estação chuvosa. A grande maioria das plantas sobreviventes conseguiu atravessar sua...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil water potential; Neotropical savannas; Light availability; Microhabitat.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041998000300011

Thermal biology of Amphisbaena munoai (Squamata: Amphisbaenidae)
Provedor de dados: 103
Autores: Matias,Nathalia Rocha; Verrastro,Laura.
ABSTRACT Studies on the thermal biology of fossorial reptiles that examine the relationship between the body temperature and thermal environment are needed to determine the extent of their thermoregulation abilities. This study assessed the thermal biology of Amphisbaena munoai Klappenbach, 1969 in the rocky fields of the Rio Grande do Sul and in the laboratory. The body temperature of most individuals was between 24 and 30 °C, both in the field (n = 81) and laboratory (n = 19). More individuals were caught in winter (n = 55) and spring (n = 60) than in summer (n = 25) and fall (n = 45), and in spring, individuals showed similar nocturnal and diurnal activities. In the laboratory, we found individuals with body temperatures up to 5 °C higher than the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amphisbaenians; Microhabitat; Seasonal; Thermoregulation.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702018000100313

Influence of structural habitat use on the thermal ecology of Gonatodes humeralis (Squamata: Gekkonidae) from a transitional forest in Maranhão, Brazil
Provedor de dados: 103
Autores: Miranda,Jivanildo P.; Ricci-Lobão,Andréa; Rocha,Carlos Frederico D.
We studied the structural habitat use and the thermal ecology of Gonatodes humeralis (Guichenot, 1855) in São Luís, Maranhão, Brazil, to examine intersexual differences in the use of perch features and to simultaneously analyze reciprocal differences on thermal ecology between the sexes. Gonatodes humeralis body temperature was strongly correlated with environmental temperatures (air and substrate), but air temperature had an additional effect on the males' body temperatures after removing the effect of the substrate temperature. Males and females differed significantly in perch height use above ground (males perched higher) but the sexes did not differ in the trunk perimeter used. Gonatodes humeralis tended to use the larger tree trunks available in its...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gecko; Temperature; Intersexual differences; Microhabitat; Thermoregulation.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000100006

Living in a caatinga-rocky field transitional habitat: ecological aspects of the whiptail lizard Cnemidophorus ocellifer (Teiidae) in northeastern Brazil
Provedor de dados: 103
Autores: Menezes,Vanderlaine A; Sluys,Monique Van; Fontes,Angélica F; Rocha,Carlos F. D.
The ecology of the active forager lizard Cnemidophorus ocellifer (Spix, 1825) was studied to analyze food habits, thermal ecology and habitat use, in the Morro do Chapéu municipality (11º29'S, 41º07'W), state of Bahia, Brazil. Lizards (N = 34) were collected with rubber bands or with an air rifle and, for each individual, we recorded cloacal temperature (Tc), air temperature (Ta) (1 cm above the substrate) and substrate temperature (Ts) (to nearest 0.2ºC). We registered the microhabitat used by each animal at the moment of first sight and measured its morphological variables (nearest 0.1 mm). In the laboratory, we registered the number of items of each prey category to the taxonomic level of Order, its dimensions and frequencies. Data showed that,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bahia; Cnemidophorus; Diet; Microhabitat; Thermal ecology.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000100002

Body orientation for thermoregulation and daily activity cycle of Mabuya macrorhyncha (Squamata: Scincidae)
Provedor de dados: 103
Autores: Maia-Carneiro,Thiago; Winck,Gisele R.; Pereira,Mariana Rodrigues; Rocha,Carlos Frederico Duarte.
ABSTRACT We investigated the daily activity and thermoregulatory body orientation of Mabuya macrorhyncha (Hoge, 1947), a lizard species that occurs in the Brazilian Atlantic Forest. We conducted this investigation in a sandy coastal dune remnant (“restinga” ecosystem) in Grussaí, state of Rio de Janeiro, Brazil, during the summer. The daily activity cycle of the lizards started around 6:00 am and ended before 7:00 pm. This is longer than observed in other populations of M. macrorhyncha (approximately 7:00 am to 5:00 pm). The activity cycle of the lizards was bimodal, with the first peak between 6:00 and 11:00 am and the second from 2:00 to 7:00 pm. This contrasts with observations on other populations of this species, which revealed an unimodal pattern....
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Activity period; Body temperature regulation; Microhabitat; Thermoregulatory behavior.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702018000100502

Abundância, microhabitat e repartição ecológica de papa-formigas (Passeriformes, Thamnophilidae) na bacia hidrográfica do rio Tibagi, Paraná, Brasil
Provedor de dados: 104
Autores: Lopes,Edson V.; Volpato,Graziele H.; Mendonça,Luciana B.; Fávaro,Fernando de L.; Anjos,Luiz dos.
Neste estudo a riqueza e a abundância de Thamnophilidae foram avaliadas e correlacionadas com parâmetros ambientais em quatro áreas de floresta da bacia do rio Tibagi (B1, M1, A1 e A2) dispostas em um gradiente ambiental. Em cada área, foi caracterizada a vegetação e, para cada espécie, foram analisados: 1) o microhabitat, 2) a distribuição espacial e 3) o tempo investido em cada local de forrageio. O número de espécies foi semelhante entre as áreas, contudo, em B1 foi registrada maior abundância. A vegetação desta área apresentou valor de correlação relativamente baixo quando comparada as outras três, que apresentaram valores maiores entre si. Emaranhados de cipó em todos os estratos, estrato médio e superior denso e ocorrência de clareiras foram...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Distribuição espacial; Duração do forrageio; Floresta Atlântica; Microhabitat.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752006000200013

Microhabitat de Habia rubica (Vieillot) e Trichothraupis melanops (Vieillot) (Aves, Emberizidae, Thraupinae), em uma floresta atlântica do sul do Brasil
Provedor de dados: 104
Autores: Fávaro,Fernando de Lima; Anjos,Luiz dos.
Este estudo identifica quais variáveis caracterizam os microhabitats de Habia rubica (Vieillot, 1817) e Trichothraups melanops (Vieillot, 1818) e verifica o padrão de abundância dessas espécies em relação aos parâmetros de microhabitat. Análise de componentes principais mostrou as variáveis de microhabitat mais importantes para cada espécie. O microhabitat de H. rubica foi caracterizado pelo estrato médio aberto e sub-bosque denso e rico em samambaias, arvoretas, herbáceas e cipós; esta espécie apresentou maior abundância nos locais ricos em tais variáveis. Para T. melanops, as variáveis mais importantes foram samambaias, arbustos, arvoretas, herbáceas, cipós, árvores de grande porte e quantidade de árvores com briófitas; a abundância desta espécie não foi...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fragmentação florestal; Microhabitat; Paraná.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752005000100026

Similaridade do sítio de vocalização em uma comunidade de anfíbios anuros na região noroeste do Estado de São Paulo, Brasil
Provedor de dados: 104
Autores: Rossa-Feres,Denise de C.; Jim,Jorge.
The breadth and overlap of male call site were determined for 15 anuran species from a temporary pond in Northwestern São Paulo State, Brazil. Four measurements were made at the point of capture of each calling male and the frequency of mating call was determined. There was a high overlap along each variable of call site, but less than 28% of possible species pairs presented high overlap for all variables. Taxonomically related species pairs calling from grass presented spatial and acoustic segregation, while those calling from the graund presented only acoustic segregation. The similarity of call site seems to be not only related to the taxonomic relationships but also with the body size and spatial heterageneity.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anura; Vocalization site; Microhabitat; Community ecology; Similarity at call site.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000200015

Occurrence and distribution of Perichaena (Trichiaceae, Myxomycetes) in the Brazilian Northeastern Region
Provedor de dados: 39
Autores: Cavalcanti,Laise de Holanda; Bezerra,Andrea Carla Caldas; Barbosa,David Itallo; Agra,Leandro de Almeida Neves Nepomuceno; Powell,Nestor Valente; Lima,Vitor Xavier de; Costa,Antônia Aurelice Aurélio.
The known distribution of Perichaena calongei, P. chrysosperma, P. corticalis, P. depressa, P. microspora, P. pedata and P. vermicularis in the nine states that comprise Brazil's Northeast Region (1,548,672 km2) is presented herein, enhancing our understanding of the distribution of the genusPerichaena (Trichiaceae, Myxomycetes) in the Neotropics. This inventory encompasses a 100-year period (1914-2014), and analyzes material deposited in herbaria and collected by the authors. The collected material came from areas of thorny deciduous vegetation typical of the Caatinga biome and portions of savannah in the continent's interior, rainforests,restingas (tropical moist broadleaf forests found along Brazil's coastal spits) and mangroves of the Atlantic Forest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chorology; Microhabitat; Rainforest; Steppical-savannah; Trichiales.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000100102

Corticolous myxobiota of the Pernambuco Center of Endemism, Brazil
Provedor de dados: 39
Autores: Barbosa,David Ítallo; Bezerra,Andrea Carla Caldas; Lima,Vitor Xavier de; Cavalcanti,Laise de Holanda.
ABSTRACT Situated within the Atlantic Forest domain, the Centro de Endemismo Pernambuco (Pernambuco Center of Endemism) - CEPE is regarded as a priority for biodiversity conservation worldwide. Covering an area of approximately 56,000 km2, it encompasses part of the states of Alagoas, Pernambuco, Paraíba and Rio Grande do Norte in northeastern Brazil. Here we present an identification key to 73 species of Myxomycetes that compose the known corticolous myxobiota of the Dense Ombrofilous Lowland Forest, Semideciduous Lowland Forest, Restinga Forest and Mangrove environments of CEPE. Specimens included here were found developed in natural conditions in the field or obtained through moist chamber culture. Among the species found, Arcyria cinerea, Clastoderma...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Biodiversity; Microhabitat; Myxogastria; Myxomycetes.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000400549

Unraveling algae and cyanobacteria biodiversity in bromeliad phytotelmata in different vegetation formations in Bahia State, Northeastern Brazil
Provedor de dados: 39
Autores: Ramos,Geraldo José Peixoto; Santana,Lucineide Maria; Medina,Anderson Matos; Bicudo,Carlos Eduardo de Mattos; Branco,Luis Henrique Zanini; Moura,Carlos Wallace do Nascimento.
ABSTRACT Knowledge of algal and cyanobacterial diversity of phytotelmata remains poorly-known, especially for bromeliads from different vegetation formations. We investigated the microalgae communities of four species of tank bromeliads from different vegetation formations in Bahia State, Northeast Brazil, highlighting the composition, richness and diversity of taxa. Sampling of water stored in bromeliads was carried out quarterly between 2014 and 2016, and abiotic variables and morphometric attributes of bromeliads were measured. A total of 89 taxa of algae and cyanobacteria were recorded for the four bromeliad species studied. The microalgae communities of the phytotelmata varied among vegetation formations, with one tank bromeliad, Alcantarea nahoumii,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Ecology; Microalgae; Microhabitat; Phytotelm; Richness; Tank bromeliads.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000400567

Bryophyte richness of soil islands on rocky outcrops is not driven by island size or habitat heterogeneity
Provedor de dados: 39
Autores: Silva,Joan Bruno; Sfair,Julia Caram; Santos,Nivea Dias dos; Pôrto,Kátia Cavalcanti.
ABSTRACT The species-area relationship (SAR) is one of the oldest and most studied ecological models, having even served as the foundation of the Theory of Island Biogeography. Nevertheless, the relative importance of habitat heterogeneity to SAR remains poorly understood. Our aim was to test the relative importance of habitat heterogeneity to the SAR of bryophyte assemblages of soil islands of rocky outcrops in the semi-arid region of Brazil. We randomly selected 15 to 20 soil islands on each of four outcrops for a total of 59 soil islands, and calculated the area, mean depth, and number of substrates for each. We used Generalized Linear Models (GLM) to test the SAR with two models, one using species richness and another using life-form richness as the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caatinga; Inselbergs; Island Biogeography; Microhabitat; Species area relationship.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000200161

Reproductive phenology of the American Bullfrog in subtropical Brazil: photoperiod as a main determinant of seasonal activity
Provedor de dados: 42
Autores: MEDEIROS,CAMILA I.; BOTH,CAMILA; KAEFER,IGOR L.; CECHIN,SONIA Z.
ABSTRACT The North American bullfrog Lithobates catesbeianus continues to invade ecosystems worldwide, potentially causing population declines and even extinctions. Within its native distribution, bullfrogs show prolonged reproductive seasons and high fertility. However, data on breeding biology of bullfrogs ex-situ in invaded localities mainly comes from anecdotal reports. Understanding how invasive species are adjusting their life histories to new colonized environments is important for conservation purposes. Here we describe temporal and spatial abundance, calling activity, spawning and tadpole distribution of bullfrogs in southern Brazil. Eighteen samplings occurred during one year. The abundance of individuals was positively related to longer...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breeding; Invasive species; Lithobates catesbeianus; Microhabitat; Recruitment; Spatial distribution.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000501909

Preliminary data on the feeding habits of the freshwater stingrays Potamotrygon falkneri and Potamotrygon motoro (Potamotrygonidae) from the Upper Paraná River basin, Brazil
Provedor de dados: 49
Autores: Silva,Thiago Buosi; Uieda,Virgínia Sanches.
Stingrays of the Potamotrygonidae family are a singular group of Neotropical ichthyofauna. Although ancient reports exist about the group, there are still many questions that need to be clarified, such as the biology of the species that occur in the Paraná-Paraguay River system. In the present work, the diet of Potamotrygon falkneri and Potamotrygon motoro, captured in the Upper Paraná River, downstream from the Engenheiro Souza Dias Hydroelectric Power Station (UHE Jupiá), was analyzed. Both species showed a diversified diet, consisting of 14 food items, including Mollusca, Crustacea, Insecta and fish, with the predominance in diversity and abundance of aquatic insects. Only one individual of each species ingested fish. Potamotrygon motoro consumed mainly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diet; Rays; Resource partitioning; Microhabitat.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032007000100027

Uso do hábitat, atividade e comportamento de Bothriopsis bilineatus e de Bothrops atrox (Serpentes: Viperidae) na floresta do Rio Moa, Acre, Brasil
Provedor de dados: 49
Autores: Turci,Luiz Carlos Batista; Albuquerque,Saymon de; Bernarde,Paulo Sérgio; Miranda,Daniele Bazzo.
As serpentes Bothriopsis bilineatus e Bothrops atrox são viperídeos simpátricos na Amazônia, sendo B. atrox comum e B. bilineatus mais rara. Ambas espécies apresentam uma dieta generalista, sendo que B. atrox forrageia principalmente sobre o chão e B. bilineatus é mais arborícola. Aqui, nós descrevemos o uso do habitat e padrão de atividade dessas duas serpentes em uma floresta amazônica no Rio Moa, Cruzeiro do Sul, Acre. Esse estudo foi baseado em observações durante procura visual limitada por tempo e encontros ocasionais de serpentes em uma trilha que é sazonalmente alagada e outra de floresta de terra firme. Durante um total de 360 horas de procura visual limitada por tempo, 11 B. bilineatus e seis B. atrox foram encontradas, enquanto uma B. bilineatus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazônia ocidental; Reptilia; Jararacas; Microhabitat; Comportamento de serpentes.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032009000300020

Sensitivity to fragmentation and spatial distribution of birds in forest fragments of northern paraná
Provedor de dados: 49
Autores: Marques,Fernanda Cristina; Anjos,Luiz dos.
In this study we investigated the relationship between the sensitivity to forest fragmentation of bird species and their habitat spatial distribution. We hypothesized that a homogenous spatial distribution is associated to habitat-generalist species, which would tend to be less sensitive to forest fragmentation; in contrast, a heterogeneous spatial distribution would drive to an increase of sensitivity to forest fragmentation. We concentrated on analyses of the suboscine birds, which are known to be closely associated to microhabitats. Field data was obtained in the Parque Estadual Mata dos Godoy (23°27′ S, 51°15′ W), southern Brazilian Atlantic forest. This reserve has high Biotic Integrity levels, with a relatively high number of recorded suboscines....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microhabitat; Habitat-specialization; Suboscine birds.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032014000300116

Microhabitat occupation by birds in a restinga fragment of Paraná coast, PR, Brazil
Provedor de dados: 52
Autores: Pedroso Junior,Nelson Novaes.
Studies were carried out to characterize microhabitat occupation by birds in a restinga fragment of Paraná coast. Were described 14 microhabitats occupied in different manners for 64 species of birds. Based on the results, could be suggested that this conspicuous class of vertebrates, together with the other elements that integrate the restinga, serve as a component to attract and stimulate the interest for the comprehension and necessity of conservation by the visitors of such ecosystem.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Microhabitat; Birds; Restinga; Sand ridges; Conservation.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000100013