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| Registros recuperados: 24 | |
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| Wang, Hua; Caffey, Rex H.; Petrolia, Daniel R.. |
| In the wake of Hurricane Katrina, the Louisiana Coastal Protection and Restoration Authority (CPRA) was established to integrate programs for habitat restoration and infrastructure protection. The Authority has begun aligning the state’s coastal spending to reflect increasing public interest in the restoration of surface acreage. Concurrent with these changes, programmatic emphasis has been placed on rapid land building (RLB) techniques that rely on mechanical dredges and sediment conveyance pipelines to build new land. The apparent costs and benefits of this approach are increasingly compared in the scientific community to more traditional and natural methods of restoration, such as freshwater diversions (DIV). Given limited state and federal budgets for... |
| Tipo: Presentation |
Palavras-chave: Coastal Restoration; Wetland; Economics; Benefit-Cost; Marsh Creation; Freshwater Diversion; Environmental Economics and Policy. |
| Ano: 2012 |
URL: http://purl.umn.edu/119740 |
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| SANTOS,Fernando André Silva; PIERANGELI,Maria Aparecida Pereira; SILVA,Fernando Luiz; SERAFIM,Milson Evaldo; SOUZA,Célia Alves de. |
| Fields of murundus (FM) are wetlands that provide numerous ecosystem services. The objectives of this study were to evaluate the chemical [organic carbon (OC), P, K+, Ca2+, Mg2+, Al3+ and H+Al] and physical [texture and bulk density (Bd)] soil attributes and calculate the organic matter (OM) and nutrient stock (P, Ca, Mg, and K) in soils of FM located in the Guapore River basin in Mato Grosso. Thirty-six sampling points were selected, and soil samples were collected from two environments: the murundu and plain area surrounding (PAS). At each sampling point, mini trenches of 0.5 × 0.5 × 0.4 m were opened and disturbed and undisturbed soil samples were collected at depths of 0-0.1, 0.1-0.2, and 0.2-0.4 m. In the Principal Component Analysis the variables... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon Basin; Earthmound; Soil fertility; Wetland. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672015000200101 |
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| ARAÚJO,GLEIN M.; BARBOSA,ANA A.A.; ARANTES,ADRIANA A.; AMARAL,ALICE F.. |
| Foram estudadas quatro comunidades vegetais de veredas no Municipio de Uberlândia, MG, durante dois anos com o objetivo de conhecer sua composição florística. As veredas foram percorridas por meio de trilhas estabelecidas, ao acaso, passando pela borda (local de solo mais seco), meio (solo medianamente úmido) e fundo (solo saturado com água). A freqüência de visitas à cada vereda foi mensal e o material botânico coletado foi incluído no Herbarium Uberlandense (HUFU). A identificação das espécies foi feita utilizando-se chaves analíticas, consultas a especialistas de várias famílias e/ou comparação com exsicatas devidamente identificadas e depositadas nos herbários HUFU, IBGE e UB. No levantamento florístico foram registradas 526 espécies, 250 gêneros e 89... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado biome; Floristic composition; Palm swamp; Wetland. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042002012000012 |
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| SILVA,MARTA PEREIRA DA; MAURO,RODINEY; MOURÃO,GUILHERME; COUTINHO,MARCOS. |
| O método de levantamento aéreo foi adaptado e utilizado pela primeira vez para a elaboração de mapas de distribuição e quantificação de classes de vegetação no Pantanal Mato-Grossense por sub-região. Foram identificadas 16 classes, baseando-se em aspectos fitofisionômicos, sendo as principais campo (31,1%), cerradão (22,1%), cerrado (14,3%), brejos (7,4%), mata semidecídua (4,0%), mata de galeria e 2,4% de baceiro ou batume. Estas informações podem subsidiar a escolha de áreas de conservação ou preservação, bem como auxiliar o monitoramento de áreas com grande extensão e difícil acesso. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Neotropical savanna; Vegetation mapping; Wetland; Pantanal Matogrossense. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042000000200004 |
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| Roberts, Lisa A.; Leitch, Jay A.. |
| The objective of this study was to estimate some economic values of Mud Lake, a managed, lacustrine wetland on the Minnesota-South Dakota border. Several outputs of Mud Lake were identified and an economic value was estimated for each. Flood control was valued at approximately $440 per acre, based on dollar damages prevented; water supply, using public utility revenues, was valued at $94 per acre; fish/wildlife habitat, recreation, and aesthetics were valued at about $21 per acre using the Contingent Valuation Method; and corrective expenditures were used to evaluate water quality at a negative per acre value of $180. When capitalized at 6 percent, the estimated total annual value of these four outputs is $6,250 per acre. These values can assist... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Wetland; Outputs; Economic valuation; Flood control; Water supply; Water quality; Recreation; Aesthetics; Fish/wildlife habitat; Contingent valuation method; Resource /Energy Economics and Policy; Land Economics/Use. |
| Ano: 1997 |
URL: http://purl.umn.edu/23406 |
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| Fazey, Ioan; Institute of Rural Sciences, University of Wales, Aberystwyth; ioan.fazey@gmail.com; Proust, Katrina; Centre for Resource and Environmental Studies, Australian National University;; Newell, Barry; Australian National University;; Johnson, Bill; Department of Environment and Conservation;; Fazey, John A.; University of Wales, Bangor;. |
| Knowledge that has been developed through extensive experience of receiving and responding to ecological feedback is particularly valuable for informing and guiding environmental management. This paper captures the implicit understanding of seven experienced on-ground conservation managers about the conservation issues affecting the Ramsar listed Macquarie Marshes in New South Wales, Australia. Multiple interviews, a workshop, and meetings were used to elicit the manager's knowledge. The managers suggest that the Macquarie Marshes are seriously threatened by a lack of water, and immediate steps need to be taken to achieve more effective water delivery. Their knowledge and perceptions of the wider societal impediments to achieving more effective water... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Conservation management; Water resources; Wetland; Experience; Traditional ecological knowledge; Tacit knowledge. |
| Ano: 2006 |
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| MEIRELLES, M. L.; FRANCO, A. C.; FERREIRA, E. A. B.; RANDOW, C. V.. |
| O objetivo deste estudo foi relacionar a altura do lençol freático com os fluxos diurnos de CO2 em um campo limpo úmido (Brasília, DF). Foram monitorados a altura da lâmina do lençol freático; a assimilação de CO2 pelo processo fotossintético de duas gramíneas que representavam 50% da cobertura vegetal; a quantificação do fluxo de CO2 do solo por um equipamento acoplado a câmara de solo; e os fluxos de CO2 atmosférico pelo método micrometeorológico de covariância de vórtices turbulentos. A lâmina de água em 2005 atingiu profundidade de 80 cm e, em 2006, esteve próxima à superfície durante todo o ano, cujas variações não exerceram um efeito na capacidade fotossintética de Axonopus comans, entretanto foram medidos valores menores em Andropogon virgatus,... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Área úmida; Luminosidade; Wetland; Savanna.; Carbono; Cerrado; Fotossíntese; Lençol Freático; Solo.; Carbon; Groundwater; Photosynthesis; Soil.. |
| Ano: 2010 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/894343 |
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| Darrigran,Gustavo; Damborenea,Cristina; Drago,Edmundo C.; Ezcurra de Drago,Inés; Paira,Aldo; Archuby,Fernando. |
| Limnoperna fortunei (Dunker, 1857), during its invasion process in South America, has caused severe impacts both on natural environments altering native biodiversity, ecosystem structure and function-, and on man-made structures causing economic looses. Twenty-one samples were taken from the right bank of the Uruguay River, from tributaries of the Uruguay and Paraná Rivers, the drainage of the Esteros del Ibera Wetland. Based on this fieldwork, the presence of larvae and adults of L. fortunei was determined. Also, through the comparison of environmental characteristic with the known tolerance limits for the species, the possibility of its establishment in environments not yet invaded was determined. Most of the sampling stations have features that allow... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioinvasion; Distribution; Golden mussel; South America; Wetland. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702012000600004 |
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| MAY JÚNIOR,JOARES A.; QUIGLEY,HOWARD; HOOGESTEIJN,RAFAEL; TORTATO,FERNANDO R.; DEVLIN,ALLISON; CARVALHO JÚNIOR,RUI M. DE; MORATO,RONALDO G.; SARTORELLO,LEONARDO R.; RAMPIM,LILIAN E.; HABERFELD,MARIO; PAULA,ROGÉRIO C. DE; ZOCCHE,JAIRO JOSÉ. |
| ABSTRACT The Pantanal is the largest inland wetland in the world and is under increasing anthropogenic threats, including long-term regionally intensive gold mining practices. Gold mining activities are known to cause the release of harmful pollutants such as mercury (Hg) to the surrounding environment. Jaguars (Panthera onca (Linnaeus, 1758)) are apex predators, and therefore show great potential to accumulate Hg by biomagnification. We hypothesize that total Hg content in the fur of jaguars from two sites within the Brazilian Pantanal would be significantly different as a function of distance from active gold mining operations. The Hg content was determined by fluorescence spectrometry. The mean ± SD Hg content in jaguars from the study site influenced... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biomagnification; Heavy metals; Mammal; Wetland. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000502129 |
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| Melo,María C.; Dellapé,Pablo M.; Carpintero,Diego L.; Coscarón,María del C.. |
| With the intention of contributing to the knowledge of the biodiversity in the protected areas of Argentina, terrestrial Heteroptera were collected in the Natural Reserve of the Iberá. The sampling site was the locality of Colonia Carlos Pellegrini (28° 32'S 57° 09'W) and the following collection methods were used: sweeping, beating, fogging and light-trapping. A list is presented, with 90 species belonging to the superfamilies Reduvioidea (Reduviidae), Mirioidea (Miridae), and Lygaeoidea (Berytidae, Colobathristidae, Cymidae, Lygaeidae, Blissidae, Geocoridae, Pachygrontidae and Rhyparochromidae), 13 of them are new records for the Argentine Republic (Debilia fusciventris, Sindala granuligera, Pnirontis (Centromelus) tabida, Cymoninus notabilis, Ochrimnus... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Inventory; Heteroptera; Corrientes; Argentina; Wetland. |
| Ano: 2004 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802004000100012 |
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| Plaza,Tarik G. D.; Carrijo,Tiago F.; Cancello,Eliana M.. |
| Nest plasticity of Cornitermes silvestrii (Isoptera, Termitidae, Syntermitinae) in response to flood pulse in the Pantanal, Mato Grosso, Brazil. The Pantanal is one of the largest wetlands in the world. Since many areas in Pantanal are flooded during part of the year, it is expected that plants and animals would have mechanisms for their survival during the flooded period. This study investigated the existence of differences in nest shape and inquilines of Cornitermes silvestrii in areas influenced by the flood pulse. We measured the volume, height, width, and height/width ratio of 32 nests in flooded areas and 27 in dry areas, and performed an one-way-Anova with the quasi-Poisson distribution to determine if there were differences in the nest measurements... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Inundation; Nest shape; Termites; Wetland. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262014000100011 |
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| Marchand, L.; Nsanganwimana, F.; Lamy, Jean-baptiste; Quintela-sabaris, C.; Gonnelli, C.; Colzi, I.; Fletcher, T.; Oustriere, N.; Kolbas, A.; Kidd, P.; Bordas, F.; Newell, P.; Alvarenga, P.; Deletic, A.; Mench, M.. |
| Intra-specific variability of root biomass production (RP) of six rooted macrophytes, i.e. Juncus effusus, Phragmites australis, Schoenoplectus lacustris, Typha latifolia, Phalaris arundinacea, and Iris pseudacorus grown from clones, in response to Cu exposure was investigated. Root biomass production varied widely for all these macrophytes in control conditions (0.08 μM) according to the sampling site. Root biomass production of T. latifolia and I. pseudacorus in the 2.5–25 μM Cu range depended on the sampling location but not on the Cu dose in the growth medium. For P. australis, J. effusus, S. lacustris, and P. arundinacea, an intra-specific variability of RP depending on both the sampling location and the Cu-dose was evidenced. This intra-specific... |
| Tipo: Text |
Palavras-chave: Copper tolerance; Phytoremediation; Root biomass; Trace element; Wetland. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00201/31183/29869.pdf |
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| Zedler, Joy B; University of Wisconsin-Madison; jbzedler@wisc.edu; Doherty, James M.; University of Wisconsin-Madison; jdohert1@gmail.com; Miller, Nicholas A.; The Nature Conservancy ; nmiller@tnc.org. |
| Policy to guide ecological restoration needs to aim toward minimizing the causes of ecosystem degradation; where causes cannot be eliminated or minimized, policy needs to shift toward accommodating irreversible landscape alterations brought about by climate change, nitrogen deposition, altered hydrology, degraded soil, and declining biodiversity. The degree to which lost diversity and ecosystem services can be recovered depends on the extent and nature of landscape change. For wetlands that occur at the base of watersheds that have been developed for agriculture or urban centers, the inflows of excess water, sediment, and nutrients can be permanent and can severely challenge efforts to restore historical services, including biodiversity support. In such... |
| Tipo: Peer-Reviewed Synthesis |
Palavras-chave: Adaptive restoration; Conservation of biodiversity; Ecological restoration; Ecosystem services; Landscape alteration; Watershed plan; Wetland. |
| Ano: 2012 |
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| Paredes Santaella, Andrés. |
| Se realizaron dos modelos, uno hidrológico y uno dinámico, para simular el comportamiento de la poza La Becerra, en el valle de Cuatro Ciénegas, Coahuila, para identificar el efecto de las extracciones de agua para el riego en la hidrología del humedal El Garabatal. Los modelos se basan en un balance hídrico, el cual está definido por la aplicación del principio de conservación de masas, también conocido como ecuación de la continuidad. Esta establece que, para cualquier volumen arbitrario y durante cualquier período de tiempo, la diferencia entre las entradas y salidas estará condicionada por la variación del volumen de agua almacenada (Sokolov A., 1981). Estos modelos hacen un balance de los volúmenes derramados, el déficit, los volúmenes evaporados, las... |
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Palavras-chave: Modelo; Humedales; Balance; Model; Wetland; Maestría; Hidrociencias. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/484 |
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| Paredes Santaella, Andrés. |
| Se realizaron dos modelos, uno hidrológico y uno dinámico, para simular el comportamiento de la poza La Becerra, en el valle de Cuatro Ciénegas, Coahuila, para identificar el efecto de las extracciones de agua para el riego en la hidrología del humedal El Garabatal. Los modelos se basan en un balance hídrico, el cual está definido por la aplicación del principio de conservación de masas, también conocido como ecuación de la continuidad. Esta establece que, para cualquier volumen arbitrario y durante cualquier período de tiempo, la diferencia entre las entradas y salidas estará condicionada por la variación del volumen de agua almacenada (Sokolov A., 1981). Estos modelos hacen un balance de los volúmenes derramados, el déficit, los volúmenes evaporados, las... |
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Palavras-chave: Modelo; Humedales; Balance; Model; Wetland; Maestría; Hidrociencias. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/484 |
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| Registros recuperados: 24 | |
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