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| Registros recuperados: 43 | |
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| França,Raquel C.S; Lopes,Maria Rosélia Marques; Ferragut,Carla. |
| The colonization process and successional patterns of a periphytic algal community were evaluated in a Amazonian Viveiro Lake (Rio Branco, Acre, Brazil). Sampling was performed over a period of 35 days; at four-day intervals for 20 days, and then at five-day intervals. Water sampling for physical, chemical and biological analyses was done during the dry and rainy season. Glass slides were used as artificial substrates for periphyton colonization. The structural community was evaluated through population density, algae class, diversity indices and descriptive species. Species richness, diversity and evenness increased as succession progressed. While density of Bacillariophyceae, Euglenophyceae and Zygnemaphyceae increased with succession, Cyanobacteria... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Periphyton; Colonization; Succession; Diversity. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672011000200010 |
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| Borges,Fábio Renato; Necchi Júnior,Orlando. |
| This investigation aimed to describe a short term (70 days) ecological succession event of a macroalgal community in a stream from northwestern São Paulo state (20º43'S; 49º13'W) after artificial disturbance (removal); evaluate if community structure characteristics were similar before and after the experimental period; compare the successional process of two experimental stream segments (partly and completely disturbed segments, PDS and CDS, respectively), simulating medium (partial) and high impact (complete removal) disturbances. In terms of colonization time, Oedogonium sp. was classified as successionally indifferent, whereas Chaetophora elegans (Roth) C. Agarth and Batrachospermum delicatulum (Skuja) Necchi et Entwisle were classified as late... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Life strategy; Lotic ecosystem; Macroalgae; Succession. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062008000200014 |
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| Malysz,Marcelo; Müller,Sandra Cristina; Milesi,Silvia Vendruscolo; Santos,Anita Stival dos; Overbeck,Gerhard Ernst. |
| ABSTRACT A functional perspective of tree communities is helpful for understanding forest dynamics, especially vegetation recovery after other land uses. Knowledge about ecological filters and survival strategies of trees are also important for the restoration of degraded areas. This study aimed to evaluate the functional composition and structure of adult and regenerative components of natural Araucaria forests, Araucaria plantations and plantations of exotic Pinus in subtropical southern Brazil. Differences in functional diversity and functional richness, and in community weighted mean trait values, including leaf traits and reproductive traits, were analyzed. RLQ analysis was used to assess the association between community structure, plant traits and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Araucaria angustifolia; Atlantic Forest; Forest dynamics; Functional diversity; Functional patterns; Pinus sp.; Succession; Tree plantations. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000400777 |
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| Toscan,Maria Angélica Gonçalves; Temponi,Lívia Godinho; Guimarães,Ana Tereza Bittencourt; Cândido Junior,José Flávio. |
| We documented litter production and seed rain in fragments of semideciduous forest (SDF) in the western part of the state of Paraná, Brazil: a late successional fragment (LF); an early successional fragment (EF); and a reforested late successional fragment (RLF). In each fragment, we established three permanent plots with four litter traps each, corresponding to 12 litter traps per fragment. Botanical material was collected monthly between June 2011 and May 2012. We sorted the material by category: leaves; branches; reproductive structures; and miscellaneous. We analyzed the seed rain using the reproductive structures. Annual production was highest (11,560 kg.ha-1) in the LF, followed by the RLF, with 9330 kg.ha-1, and the EF, with 7838 kg.ha-1. The RLF... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Litterfall; Semideciduous forest; Succession; Zoochory. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000300012 |
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| BATTAN HORENSTEIN,MOIRA; LINHARES,ARICIO X; ROSSO,BEATRIZ; GARCÍA,MARÍA D. |
| During 2004, four experiments were carried out, one each season, in order to determine the species composition and seasonal dynamics of Calliphoridae in a rural area of Córdoba (Argentina). Two pigs (Sus seroja L.), weighing approximately 8 Kg each, were used in each experiment. They were killed with a blow to the head and immediately placed in a variant of the Schoenly et al. (1991) trap. One pig was exposed in the shade and the other one under direct sunlight. The insect fauna was collected daily during the four first weeks and every two or three days thereafter. A total of 16.609 adults of Calliphoridae were collected, and later on identified as one of the following seven species: Chrysomya albiceps (Wiedemann), Chrysomya megacephala (Fabricius),... |
| Tipo: Journal article |
Palavras-chave: Calliphorids; Necrophages; Seasonal dynamics; Succession. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602007000200007 |
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| Breves-Ramos,André; Lavrado,Helena Passeri; Junqueira,Andrea de Oliveira Ribeiro; Silva,Sérgio Henrique Gonçalves da. |
| The aim of this study was to describe and compare the succession of intertidal benthic communities in two areas at Guanabara Bay, RJ, Brazil: Urca, an area submitted to moderated organic pollution and Catalão, an extremely polluted area. Three transects in each area were scraped one month before the beginning of this study in order to evaluate the recruitment (recruitment-treatments). Three other transects were monitored without manipulation (monitoring treatments). Species composition and relative abundance were evaluated monthly between September and December, 2000. A total of 26 species was found at Urca and 13 at Catalão. The percent cover of the most abundant organisms was not similar between treatments at Urca after four months, while in Catalão, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Benthic communities; Succession; Rocky intertidal zone; Guanabara Bay. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000800012 |
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| Santos,Vera Lúcia dos; Muchovej,Rosa Maria; Borges,Arnaldo Chaer; Neves,Júlio César L.; Kasuya,Maria Catarina M.. |
| The occurrence of vesicular-arbuscular mycorrhizae (AM) and ectomycorrhizae (ECM) in the same root system was observed when species of Eucalyptus urophylla S.T. Blake, E. citriodora Hook f., E. grandis W. Hill ex Maiden, E. cloeziana F. Muell. and E. camaldulensis Dehnh were simultaneously inoculated with Glomus etunicatum Becker & Gederman and Pisolithus tinctorius (Per.) Cocker & Couch, isolate Pt 90A. The succession between the two fungi was observed. In general ectomycorrhizal colonization increased followed by a decrease in AM. Pisolithus tinctorius was favored in simultaneous inoculation with G. etunicatum, and the positive effect of the simultaneous inoculation of both fungi in the percent colonization by the AM fungus occurred up to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glomus etunicatum; Pisolithus tinctorius; Succession; Eucalyptus. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000200002 |
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| Blumenthal, Dana M; University of Minnesota; dblumenthal@npa.ars.usda.gov; Jordan, Nicholas R; University of Minnesota; perr0128@tc.umn.edu; Svenson, Elizabeth L; University of Minnesota; esvenso1@swarthmore.edu. |
| The potential weed control benefits of ecological restoration are rarely cited and largely unstudied. Nevertheless, the nature of many restoration target communities, i.e., diverse, late-successional communities, suggests that restoration may control weeds and that the invasibility of plant communities may decrease with both diversity and successional age. Given the high cost of weed control in nonagricultural land, weed control benefits could be a strong incentive for restoration efforts. We examined the cumulative effects of restoration on weed populations 7 yr after tallgrass prairie restoration on a Minnesota sand plain. The numbers and biomass of volunteer weeds were compared among randomized plots with (1) no restoration, (2) prairie seed addition,... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Community invasibility; Invasion; Prairie; Restoration; Succession; Weed competition; Weed control; Weeds. |
| Ano: 2003 |
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| Fath, Brian D; Advanced Systems Analysis, International Institute for Applied Systems Analysis; Department of Biological Sciences, Towson University; bfath@towson.edu; Dean, Carly A; Advanced Systems Analysis, International Institute for Applied Systems Analysis; carly.ann.dean@gmail.com; Katzmair, Harald; FAS.research; harald.katzmair@fas.at. |
| The concept of resilience continues to crescendo since the 1990s, touching on multiple fields with multiple interpretations and uses. Here, we start from its origins in systems ecology, framing the resilience concept explicitly in the adaptive cycle with the observation that resilient systems are ones that successfully navigate all stages of growth, development, collapse, and reorientation of this cycle. The model is explored in terms of the traps and pathologies that hinder this successful navigation, particularly when applied to socioeconomic organizations and decision-management situations. For example, for continuous function over the adaptive life cycle, a system needs activation energy or resources to grow, followed by adequate structure and... |
| Tipo: Peer-Reviewed Insight |
Palavras-chave: Adaptive cycle; Collapse; Development; Growth; Re-orientation; Resilience; Succession; Thresholds. |
| Ano: 2015 |
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| Registros recuperados: 43 | |
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