Results 81 to 90 of about 4,081 (214)

Ecological studies on some lakes of the Amazon valley

, 1967
Of the three types of lakes studied, clear water, white water, and brown water, the white water lakes are the only ones to have a reasonable autochtonous production of organic matter. Owing probably to the lack of mineral salts, the primary production is
Marlier, G.
core  

Implications for the use of sedimentary invertebrate communities to infer past presence of fish

Knowledge and Management of Aquatic Ecosystems, 2010
We investigated surface sediment assemblages of invertebrates from nine shallow lakes in southern Finland and assessed the relationship between invertebrate assemblages and fish status at local scale for the purpose of ...
Nevalainen L., Luoto T.P.
doaj   +1 more source

Population dynamics of the pioneer population of Daphnia parvula, Fordyce during the invasion of Lake Candia (Northern Italy)

Journal of Limnology, 2004
Since the 1970s Daphnia parvula, Fordyce, originally distributed in the New World, has been invading Europe. In Italy D. parvula first appeared in the shallow, eutrophic Lake Candia (Piedmont, Northern Italy) during September 2002.
Fiorenza MARGARITORA, Bruno COUCHAUD, Gianluigi GIUSSANI, Nicoletta RICCARDI   +3 more
doaj   +1 more source

Predation on microcrustaceans in evidence: the role of chaoborid larvae and fish in two shallow and small Neotropical reservoirs

Nauplius
This study was focused on the predation upon microcrustaceans by an invertebrate predator (chaoborid larvae), and vertebrate predators (fish), in two small reservoirs in southeastern Brazil, with and without macrophytes, in two climatic periods (dry and ...
Carolina Figueira Câmara, Maria Stela Maioli Castilho-Noll, Marlene Sofia Arcifa   +2 more
doaj  

Composition and Bioactivities of an ()-β-Farnesene Chemotype of Chamomile () Essential Oil from Nepal

Natural Product Communications, 2015
The essential oil of Matricaria chamomilla , collected from Nepal, was obtained by hydrodistillation and analyzed by gas chromatography – mass spectrometry.
Prabodh Satyal, Samon Shrestha, William N. Setzer   +2 more
doaj   +1 more source

Target gene approaches: Gene expression in Daphnia magna exposed to predator-borne kairomones or to microcystin-producing and microcystin-free Microcystis aeruginosa

BMC Genomics, 2009
Background Two major biological stressors of freshwater zooplankton of the genus Daphnia are predation and fluctuations in food quality. Here we use kairomones released from a planktivorous fish (Leucaspius delineatus) and from an invertebrate predator ...
Courts Cornelius, Schwarzenberger Anke, von Elert Eric   +2 more
doaj   +1 more source

Lake Nabigaga: a field survey undertaken by the National Fisheries Resources Research Institute (NaFIRRI) [PDF]

, 2010
The field survey was undertaken by NaFIRRI technical staff. The terms of reference for the survey were to make an assessment of the lake for possible cage fish farming.

core  

Endocrine regulation of predator-induced phenotypic plasticity [PDF]

, 2014
Elucidating the developmental and genetic control of phenotypic plasticity remains a central agenda in evolutionary ecology. Here, we investigate the physiological regulation of phenotypic plasticity induced by another organism, specifically predator ...
A Heyland, A Laurila, A Tan, AA Sullivan, AJ Zera, Andrew P. Beckerman, AP Beckerman, AP Moczek, AW Olmstead, AW Olmstead, BL Hall, BL Peckarsky, BR Hannas, BR Hannas, C Laforsch, C Teplitsky, CJ Lambertsen, CV Rider, DB Gelman, DF Erezyilmaz, DJ Emlen, E Hammill, ES Chang, G Davidowitz, Gerald A. LeBlanc, H Escriva, H Miyakawa, HF Nijhout, HF Nijhout, HP Riessen, IT Baldwin, J Buskirk Van, J Hardie, J Hardie, JK Colbourne, JT Hoverman, JW Truman, JW Truman, K Endo, K Hartfelder, K King-Jones, L Safranek, LM Riddiford, LM Riddiford, LM Riddiford, M Jindra, M Kanehisa, M Pigliucci, MF Benard, N Tatarazako, P Beldade, PA Abrams, PM Brakefield, R Parthasarathy, R Tollrian, R Tollrian, R Tollrian, R Tollrian, R Tollrian, RA Relyea, RA Relyea, S Lass, S Oda, SE Sultan, SR Dennis, Stuart R. Dennis, T Beissbarth, T Flatt, T Soin, T Tuller, TAJ Priya, XG Zhou, Y Suzuki   +72 more
core   +2 more sources

Abundance, Diversity and Distribution of Benthic Macro-Invertebrates in the Flat Bayou Drainage Area, Jefferson County, Arkansas [PDF]

, 1979
The main ditch of Flat Bayou Drainage in north central Jefferson County carries water southward into Plum Bayou which then shortly empties into the Arkansas River.
Rickett, John D.
core   +2 more sources

Diel vertical migration of copepods in a Brazilian lake: a mechanism for decreasing risk of Chaoborus predation?

Brazilian Journal of Biology
A comparison between two studies on diel vertical migration of two cyclopoid copepod species, in Lake Monte Alegre, undertaken in 1985/86 and 1999, revealed a change in their migratory behavior.
Perticarrari A., M. S. Arcifa, R. A. Rodrigues   +2 more
doaj   +1 more source