Results 11 to 20 of about 149,623 (231)

Amphibian loss alters periphyton structure and invertebrate growth in montane streams

Journal of Animal Ecology, Volume 91, Issue 11, Page 2329-2337, November 2022., 2022
This paper demonstrates that amphibian loss increases periphyton biomass, causes shifts in algal assemblages and reduces invertebrate growth. It highlights the importance of protecting amphibians in order to maintain normal stream ecosystem functioning, especially in nonforested streams where periphyton in the main energy resource.
Alberto Alonso, Silvia Monroy, Jaime Bosch, Javier Pérez, Luz Boyero   +4 more
wiley   +1 more source

Assessment of Fractures in Excavation Damaged Zone around Roadways of an Iron Mine Using Optical Televiewer Detecting Method

Advances in Civil Engineering, Volume 2022, Issue 1, 2022., 2022
The properties of the excavation damaged zone (EDZ) are critical to the stability of the surrounding rock masses of the chamber, roadway, and dam, and fractures in the EDZ also affect the properties of the EDZ. In this paper, the fractures in the EDZ of an underground iron mine roadway were tested using borehole television (BTV).
Fengyu Ren, Xialiang Qiao, Jianli Cao, Guang-Liang Feng   +3 more
wiley   +1 more source

Exposición a químicos disruptores endócrinos obesogénicos y obesidad en niños y jóvenes de origen latino o hispano en Estados Unidos y Latinoamérica: una perspectiva del curso de la vida

Obesity Reviews, Volume 22, Issue S5, Octubre 2021., 2021
Resumen En el 2019, en seguimiento a un taller dirigido por el Global Health Studies del Fogarty International Center sobre el tema de la prevención de la obesidad infantil y las sinergias de investigación que surgen a través de las colaboraciones transfronterizas, convocamos a un grupo de expertos de Estados Unidos y Latinoamérica para que realizaran ...
Wei Perng, Alejandra Cantoral, Diana C. Soria‐Contreras, Larissa Betanzos‐Robledo, Katarzyna Kordas, Yun Liu, Ana M. Mora, Camila Corvalan, Anita Pereira, Marly Augusto Cardoso, Jorge E. Chavarro, Carrie V. Breton, John D. Meeker, Kim G. Harley, Brenda Eskenazi, Karen E. Peterson, Martha Maria Tellez‐Rojo   +16 more
wiley   +1 more source

Primary succession in an Atlantic salt marsh: From intertidal flats to mid‐marsh platform in 35 years

Journal of Ecology, Volume 109, Issue 8, Page 2909-2921, August 2021., 2021
Facilitation plays a central role in saltmarsh development in this study of primary succession. We chronicle changes in the sedimentary environment, geomorphology and plant colonisation over 35 years, as intertidal flats were transformed into a mid‐marsh platform.
Jesús M. Castillo, Blanca Gallego‐Tévar, Eloy M. Castellanos, Manuel Enrique Figueroa, Anthony J. Davy   +4 more
wiley   +1 more source

Characteristics of heavy metals and their evaluation in suspended sediments from Piracicaba river basin (São Paulo, Brazil) [PDF]

, 2010
Fluxes of the particulate heavy metals like chromium (Cr), copper (Cu), cobalt (Co), nickel (Ni), zinc (Zn) and lead (Pb) were determined along the Piracicaba River basin.
Mortatti, Jefferson, Probst, Jean-Luc
core   +3 more sources

Ciliados (Protozoa) de sedimentos secos de una charca temporaria de la Argentina [PDF]

, 2009
Temporary ponds represent special environments that are inhabited by organisms adapted to changing environmental conditions. Ciliates are able to survive complete loss of water in these transient habitats through cyst formation. Nevertheless, ciliates
Claps, Maria Cristina, Kuppers, Gabriela Cristina, Lopretto, Estela Celia   +2 more
core   +3 more sources

Evaluation of the use of Leptodactylus ocellatus (Anura: Leptodactylidae) frog tissues as bioindicator of metal contamination in Contas River, Northeastern Brazil

Anais da Academia Brasileira de Ciências, 2014
This paper presents a study on the viability of the use of tissues of the Leptodactylus ocellatus species (Anura Leptodactylidae) as a bioindicator of metal pollution.
LÍVIA O. CORREIA, SÉRGIO SIQUEIRA JÚNIOR, PAULO L.S. CARNEIRO, MARCOS A. BEZERRA   +3 more
doaj   +1 more source

Sterols and fecal indicator microorganisms in sediments from Admiralty Bay, Antarctica

Brazilian Journal of Oceanography, 2005
Sediments from the proximity of Ferraz station outfall, located in Admiralty Bay, Antarctica, were analyzed for fecal indicator microorganisms and sterols during the austral summer of 1999/2000 in order to assess human sewage input.
César de Castro Martins, Rosalinda Carmela Montone, Rosa Carvalho Gamba, Vivian Helena Pellizari   +3 more
doaj   +1 more source

Interação do regime hídrico com as relações nutricionais em ecossistema manguezal Interaction of the water regime with nutrients relations in a mangrove ecosystem

Acta Botânica Brasílica, 2012
A hipótese de que a sazonalidade do regime fluvial e pluvial tenha alguma influência na composição físico-química do sedimento e na constituição química foliar em arbóreas do ecossistema manguezal foi testada nesse estudo. Foi investigada a influência do
Geraldo Rogério Faustini Cuzzuol, Andréa Campos Rocha   +1 more
doaj   +1 more source

Mineralogy and chemistry of bottom sediments of the middle and lower Madeira River and its main tributaries : Amazonas - Brazil [PDF]

, 2011
This study reports the granulometric, mineralogic and chemical analyses, including Pb isotope, carried out on the bottom sediments of the Madeira River, whose headwaters are in the Andes Mountain, and its tributaries that come from the cratonic region ...
HORBE, Adriana Maria Coimbra, MOURA, Candido Augusto Veloso, QUEIROZ, Maria Mireide Andrade   +2 more
core   +1 more source