Results 21 to 30 of about 235,489 (205)

Effects of daily changes in environmental factors on the abundance and richness of Odonata Efeitos das mudanças diárias dos fatores ambientais sobre a abundância e a riqueza de Odonata

Acta Limnologica Brasiliensia, 2011
AIM: The aim of this work was to investigate the effects of daily changes in surface water abiotic factors on the abundance of Odonata larvae and the genus richness in a lateral lake isolated from a tropical river during the nycthemeral cycle in dry and ...
João Ânderson Fulan, Raoul Henry, Rosemary Cristina Souza Davanso   +2 more
doaj   +1 more source

Long-Term Vegetation Dynamics in a Megadiverse Hotspot: The Ice-Age Record of a Pre-montane Forest of Central Ecuador. [PDF]

, 2018
Tropical ecosystems play a key role in many aspects of Earth system dynamics currently of global concern, including carbon sequestration and biodiversity.
Absy, Alley, Aspden, Bennett, Bernal, Bernal, Blaauw, Bush, Bush, Bush, Bush, Bush, Bush, Bush, Bush, Clark, Colinvaux, Colinvaux, Colinvaux, Colinvaux, Coplen, Correa-Metrio, Cox, Cárdenas, Cárdenas, Cárdenas, Davis, de Berc, Deplazes, Faegri, Ferdon, Finsinger, Flantua, Flantua, Gentry, Gosling, Haberle, Haffer, Hall, Harling, Haug, Heine, Hijmans, Hill, Hogg, Jacobson, Juggins, Jørgensen, Keen, Liu, Livingstone, Lombardo, Lombardo, Loughlin, Luzuriaga, Malhi, Matthews-Bird, Meyers, Mosblech, Myers, Oksanen, Puyasena, Roubik, Rull, Sierra, Stocker, Stockmarr, Urrego, Urrego, van der Hammen, van’t Veer, Von Post, Whitlock, Whitney, Whittaker, Williams   +75 more
core   +6 more sources

Zooplankton as an Indicator: A Dramatic Shift in Its Composition Following a Sudden Temporal Brownification of a Tropical Oligotrophic Lake in Southern Mexico

Diversity
Lake Bacalar, a fragile oligotrophic ecosystem located in the southeast of Yucatan Peninsula, Mexico, suffered from a sudden brownification after the tropical storm Cristobal in June 2020 in the Gulf of Mexico.
Manuel Elías-Gutiérrez, Martha Valdez-Moreno, Lucia Montes-Ortiz, Alma E. García-Morales   +3 more
doaj   +1 more source

Thermal structure of the Poraquê lake, Central Amazonian, Brazil - doi: 10.4025/actascibiolsci.v33i2.5150

Acta Scientiarum: Biological Sciences, 2011
Thermal gradient of a Central Amazonian lake was studied to establish a link between seasonal variations in the water level, temperature, suspended particulate matter (SPM) and thermal stratification.
Fabio Marques Aprile
doaj   +1 more source

The Dynamic of Phytoplankton Community Structure in Face of Warming Climate in A Tropical Man-Made Lake

Biosaintifika: Journal of Biology & Biology Education, 2017
In freshwater ecosystems, water temperature plays as an environmental factor that regulates its structure and function. A research on the impacts of changes in temperature to the dynamics of the Phytoplankton community structure has been done.
Sunardi Sunardi, Rina Febriani, Budi Irawan, Mutia Septi Saputri   +3 more
doaj   +1 more source

The Lake Petén Itzá Scientifi c Drilling Project [PDF]

Scientific Drilling, 2006
Polar ice cores provide us with high-resolution records of past climate change at high latitudes on both glacial-to-interglacial and millennial timescales.
Daniel Ariztegui, Mark Brenner, Flavio S. Anselmetti, David A. Hodell   +3 more
doaj   +1 more source

Limnological changes in Dom Helvécio Lake (South-East Brazil): natural and anthropogenic causes

Brazilian Journal of Biology
In order to verify changes in physical, chemical and biological features of Dom Helvécio Lake (South-East Brazil), this study compares previous and recent data obtained from limnological investigations over three decades. Plankton species composition and
PM. Maia-Barbosa, LG. Barbosa, SL. Brito, F. Garcia, CFA Barros, MBG Souza, N. Mello, AS. Guimarães, FAR Barbosa   +8 more
doaj   +1 more source

Spatial and temporal variation of Peridinium umbonatum F. Stein, 1883 (Dinophyceae) and its relationship with total phytoplankton of a shallow, oligotrophic lake in central Brazil (Lagoon Bonita, Distrito Federal) Variação especial e temporal de Peridinium umbonatum F. Stein, 1883 (Dinophyceae) e sua relação com o fitoplâncton total de uma lagoa rasa e oligotrófica no Brasil Central (Lagoa Bonita, Distrito Federal)

Acta Limnologica Brasiliensia, 2010
AIM: The main goal of this study was to investigate the temporal and spatial distribution of Peridinium umbonatum and its relationship with the physical and chemical water variables of the pelagic and littoral zones of Lagoon Bonita, located in Brasília,
Patrícia Pereira Gomes, Maria do Socorro Rodrigues Ibañez, June Springer de Freitas   +2 more
doaj   +1 more source

ICDP workshop on the Lake Tanganyika Scientific Drilling Project: a late Miocene–present record of climate, rifting, and ecosystem evolution from the world's oldest tropical lake [PDF]

Scientific Drilling, 2020
The Neogene and Quaternary are characterized by enormous changes in global climate and environments, including global cooling and the establishment of northern high-latitude glaciers.
J. M. Russell, P. Barker, A. Cohen, S. Ivory, I. Kimirei, C. Lane, M. Leng, N. Maganza, M. McGlue, E. Msaky, A. Noren, L. Park Boush, W. Salzburger, C. Scholz, R. Tiedemann, S. Nuru, S. Nuru   +16 more
doaj   +1 more source

Diurnal sampling reveals significant variation in CO2 emission from a tropical productive lake

Brazilian Journal of Biology
It is well accepted in the literature that lakes are generally net heterotrophic and supersaturated with CO2 because they receive allochthonous carbon inputs. However, autotrophy and CO2undersaturation may happen for at least part of the time, especially
PCJ Reis, FAR Barbosa
doaj   +1 more source