Results: 2
#1
au:Silveira, Maria Áurea Pinheiro de Almeida
Filters
Order by
Page
of 1
Next
1.
Threats to the integrity of urban streams in the southwest amazon
Facebook Twitter
Facebook Twitter
- Other social networks
- Google+
- StambleUpon
- CiteULike
- Mendeley
- Other networks
- Metrics
Catâneo, Dayana Tamiris Brito dos Santos
; Oliveira, Marcela Alvares
; Matos, Najla Benevides
; Costa, Anna Cristyna Tavares da
; Pereira, Fabrícia Simões
; Santos, Tauanne Alves Putumujú
; Silveira, Maria Áurea Pinheiro de Almeida
; Doria, Carolina Rodrigues da Costa
.
Resumo Neste estudo, caracterizamos a integridade física, hidromorfologia e limnologia de dez igarapés urbanos da Amazônia Sul-Ocidental com diferentes graus de antropização, com o objetivo de investigar como essas características covariam e identificar as ameaças à saúde desses ecossistemas. A integridade física dos igarapés foi avaliada por um Índice de Integridade de Habitat (HII), a hidromorfologia com base na largura, profundidade, vazão e tipo de substrato, e a caracterização limnológica através de 14 parâmetros físico-químicos durante as estações seca e chuvosa. Três igarapés foram classificados como preservados, dois como intermediários e cinco como degradados. Alterações antrópicas foram observadas nas características hidromorfológicas, principalmente na largura, profundidade e tipo de substrato em diferentes categorias de integridade. A análise limnológica revelou que as demandas químicas e bioquímicas de oxigênio dissolvido, nitrogênio amoniacal, nitrato, ferro dissolvido e sulfetos ultrapassaram os limites estabelecidos pela regulamentação brasileira de qualidade da água (CONAMA 357/2005). A Análise de Redundância (RDA) indicou a influência de tipos específicos de substrato nos parâmetros dos igarapés degradados, enquanto os igarapés preservados mostraram correlação entre o oxigênio dissolvido e as condições da mata ciliar. A análise de cluster enfatizou a importância da integração de métricas ambientais, hidromorfológicas e limnológicas para uma avaliação abrangente da saúde do ecossistema. Dada a heterogeneidade dos ecossistemas aquáticos amazônicos, este estudo poderá contribuir para o estabelecimento de critérios baseados em características regionais para avaliação precisa e orientação de políticas públicas que visem proteger e garantir a integridade desses ecossistemas. SulOcidental Sul Ocidental antropização HII, HII , (HII) largura 1 físicoquímicos físico químicos chuvosa degradados amoniacal nitrato CONAMA 357/2005. 3572005 357/2005 . 357 2005 357/2005) RDA (RDA ciliar ambientais ecossistema amazônicos (HII 357200 357/200 35 200 35720 357/20 3 20 3572 357/2 2 357/
Abstract This study characterized the physical integrity, hydromorphology, and limnology of ten urban streams in the Southwestern Amazon. The objective was to investigate how these characteristics covary and identify threats to the health of these ecosystems. The physical integrity of the streams was assessed using a Habitat Integrity Index (HII), hydromorphology based on width, depth, flow, and substrate type, and limnological characterization through 14 physico-chemical parameters during dry and rainy seasons. Three streams were classified as preserved, two as intermediate, and five as degraded. Anthropogenic alterations were observed in hydromorphological characteristics, especially in width, depth, and substrate type across different integrity categories. Limnological analysis revealed that chemical and biochemical oxygen demands, ammoniacal nitrogen, nitrate, dissolved iron, and sulfides exceeded the limits established by Brazilian water quality regulations (CONAMA 357/2005). The alteration of these parameters reveals that the primary threat to the integrity of these ecosystems is sewage collection and treatment issues, reflecting the absence of basic sanitation. Redundancy Analysis (RDA) indicated the influence of specific substrate types on parameters in degraded streams, while preserved streams showed a correlation between dissolved oxygen with riparian forest conditions and the absence of anthropogenic influence. Cluster analysis emphasized the importance of integrating environmental, hydromorphological, and limnological metrics for a comprehensive assessment of ecosystem health. Given the heterogeneity of Amazonian aquatic ecosystems, this study may contribute to the establishment of criteria based on regional characteristics for accurate assessment and guidance of public policies aimed at protecting and ensuring the integrity of these ecosystems. Amazon HII, HII , (HII) width depth flow 1 physicochemical physico seasons intermediate categories demands nitrogen nitrate iron CONAMA 357/2005. 3572005 357/2005 . 357 2005 357/2005) issues sanitation RDA (RDA environmental (HII 357200 357/200 35 200 35720 357/20 3 20 3572 357/2 2 357/
2.
The Program for Biodiversity Research in Brazil: The role of regional networks for biodiversity knowledge, dissemination, and conservation
Facebook Twitter
Facebook Twitter
- Other social networks
- Google+
- StambleUpon
- CiteULike
- Mendeley
- Other networks
- Metrics
ROSA, CLARISSA
; BACCARO, FABRICIO
; CRONEMBERGER, CECILIA
; HIPÓLITO, JULIANA
; BARROS, CLAUDIA FRANCA
; RODRIGUES, DOMINGOS DE JESUS
; NECKEL-OLIVEIRA, SELVINO
; OVERBECK, GERHARD E.
; DRECHSLER-SANTOS, ELISANDRO RICARDO
; ANJOS, MARCELO RODRIGUES DOS
; FERREGUETTI, ÁTILLA C.
; AKAMA, ALBERTO
; MARTINS, MARLÚCIA BONIFÁCIO
; TOMAS, WALFRIDO MORAES
; SANTOS, SANDRA APARECIDA
; FERREIRA, VANDA LÚCIA
; CUNHA, CATIA NUNES DA
; PENHA, JERRY
; PINHO, JOÃO BATISTA DE
; SALIS, SUZANA MARIA
; DORIA, CAROLINA RODRIGUES DA COSTA
; PILLAR, VALÉRIO D.
; PODGAISKI, LUCIANA R.
; MENIN, MARCELO
; BÍGIO, NARCÍSIO COSTA
; ARAGÓN, SUSAN
; MANZATTO, ANGELO GILBERTO
; VÉLEZ-MARTIN, EDUARDO
; SILVA, ANA CAROLINA BORGES LINS E
; IZZO, THIAGO JUNQUEIRA
; MORTATI, AMANDA FREDERICO
; GIACOMIN, LEANDRO LACERDA
; ALMEIDA, THAÍS ELIAS
; ANDRÉ, THIAGO
; SILVEIRA, MARIA AUREA PINHEIRO DE ALMEIDA
; SILVEIRA, ANTÔNIO LAFFAYETE PIRES DA
; MESSIAS, MARILUCE REZENDE
; MARQUES, MARCIA C.M.
; PADIAL, ANDRE ANDRIAN
; MARQUES, RENATO
; BITAR, YOUSZEF O.C.
; SILVEIRA, MARCOS
; MORATO, ELDER FERREIRA
; PAGOTTO, RUBIANI DE CÁSSIA
; STRUSSMANN, CHRISTINE
; MACHADO, RICARDO BOMFIM
; AGUIAR, LUDMILLA MOURA DE SOUZA
; FERNANDES, GERALDO WILSON
; OKI, YUMI
; NOVAIS, SAMUEL
; FERREIRA, GUILHERME BRAGA
; BARBOSA, FLÁVIA RODRIGUES
; OCHOA, ANA C.
; MANGIONE, ANTONIO M.
; GATICA, AILIN
; CARRIZO, MARÍA CELINA
; RETTA, LUCÍA MARTINEZ
; JOFRÉ, LAURA E.
; CASTILLO, LUCIANA L.
; NEME, ANDREA M.
; RUEDA, CARLA
; TOLEDO, JOSÉ JULIO DE
; GRELLE, CARLOS EDUARDO VIVEIROS
; VALE, MARIANA M.
; VIEIRA, MARCUS VINICIUS
; CERQUEIRA, RUI
; HIGASHIKAWA, EMÍLIO MANABU
; MENDONÇA, FERNANDO PEREIRA DE
; GUERREIRO, QUÊZIA LEANDRO DE MOURA
; BANHOS, AUREO
; HERO, JEAN-MARC
; KOBLITZ, RODRIGO
; COLLEVATTI, ROSANE GARCIA
; SILVEIRA, LUÍS FÁBIO
; VASCONCELOS, HERALDO L.
; VIEIRA, CECÍLIA RODRIGUES
; COLLI, GUARINO RINALDI
; CECHIN, SONIA ZANINI
; SANTOS, TIAGO GOMES DOS
; FONTANA, CARLA S.
; JARENKOW, JOÃO A.
; MALABARBA, LUIZ R.
; RUEDA, MARTA P.
; ARAUJO, PUBLIO A.
; PALOMO, LUCAS
; ITURRE, MARTA C.
; BERGALLO, HELENA GODOY
; MAGNUSSON, WILLIAM E.
.
Abstract The Program for Biodiversity Research (PPBio) is an innovative program designed to integrate all biodiversity research stakeholders. Operating since 2004, it has installed long-term ecological research sites throughout Brazil and its logic has been applied in some other southern-hemisphere countries. The program supports all aspects of research necessary to understand biodiversity and the processes that affect it. There are presently 161 sampling sites (see some of them at Supplementary Appendix), most of which use a standardized methodology that allows comparisons across biomes and through time. To date, there are about 1200 publications associated with PPBio that cover topics ranging from natural history to genetics and species distributions. Most of the field data and metadata are available through PPBio web sites or DataONE. Metadata is available for researchers that intend to explore the different faces of Brazilian biodiversity spatio-temporal variation, as well as for managers intending to improve conservation strategies. The Program also fostered, directly and indirectly, local technical capacity building, and supported the training of hundreds of undergraduate and graduate students. The main challenge is maintaining the long-term funding necessary to understand biodiversity patterns and processes under pressure from global environmental changes.
https://doi.org/10.1590/0001-3765202120201604
1034 downloads
Showing
itens per page
Page
of 1
Next
Statistics of
Send result
Sem resultados
No documents were found for your search
Glossary and search help
You can enrich your search in a very simple way. Use the search indexes combined with the connectors (AND or OR) and specify more your search.
For example, if you want to search for articles about
cases of dengue in Brasil in 2015, use:ti:dengue and publication_year:2015 and aff_country:Brasil
See below the complete list of search indexes that can be used:
Index code | Element |
---|---|
ti | article title |
au | author |
kw | article keywords |
subject | subject (title words, abstract and keywords) |
ab | abstract |
ta | journal short title (e.g. Cad. Saúde Pública) |
journal_title | journal full title (e.g. Cadernos de Saúde Pública) |
la | publication language code (e.g. pt - Portuguese, es - Spanish) |
type | document type |
pid | publication identifier |
publication_year | publication year of publication |
sponsor | sponsor |
aff_country | country code of the author's affiliation |
aff_institution | author affiliation institution |
volume | article volume |
issue | article issue |
elocation | elocation |
doi | DOI number |
issn | journal ISSN |
in | SciELO colection code (e.g. scl - Brasil, col - Colômbia) |
use_license | article usage license code |