Results 41 to 50 of about 13,413 (259)

The effects of nutrient level on periphyton–macrophyte interactions in freshwater ecosystems

Water Biology and Security
Periphyton are one of the key primary producers in aquatic ecosystems, particularly in oligotrophic shallow lakes. Submerged macrophytes are capable of competing with periphyton for nutrients and light, but may also facilitate periphyton by providing ...
Yushan Li, Qingchuan Chou, Liangliang Huang, Mingjun Feng, Haowu Cheng, Jun Xu, Peiyu Zhang   +6 more
doaj   +1 more source

Phosphorus enrichment of the oligotrophic River Rede (Northumberland, UK) has no effect on periphyton growth rate

, 2014
Reducing phosphorus (P) loading to rivers is seen as a key mitigation measure to improve aquatic ecology and control excessive algal growth, as P is widely assumed to be the limiting nutrient in most rivers.
Smith, Jim, Alan Warwick, Warwick, Alan, Barrett, Cyril, Bowes, Michael J., Hale, Michelle S., Hale, Michelle, James T Smith; PhD, Stephanie Jane McCall; BSc, Tanya A Warnaars; PhD, Mccall, Stephanie, Smith, James T., Warnaars, Tanya, Warnaars, Tanya A., Michelle S Hale; PhD, Bowes, Michael, McCall, Stephanie J., Michael John Bowes; BSc, MSc, PhD, Cyril Barrett   +18 more
core   +1 more source

The relationship between cellular protein content and selenium accumulation in freshwater microalgae

Integrated Environmental Assessment and Management, EarlyView.
Abstract Variability in the bioconcentration of selenium (Se) by primary producers at the base of the food web results in uncertainty in predictions of bioaccumulation and ecological risk to higher trophic level organisms. Water chemistry, speciation of Se, and periphyton community composition have all been suggested as factors that contribute to ...
Courtney Bogstie, Melanie Gallant, James R. Elphick, Christopher Kennedy   +3 more
wiley   +1 more source

Continental accumulation of fads2 copy numbers allows sticklebacks to thrive across a diversity of nutritional landscapes

Oikos, EarlyView.
Nutrients, including vital organic compounds, vary in availability across ecosystems, with the potential to act as a source of selection for traits that increase nutrient acquisition and biosynthesis. Compared to freshwaters, marine ecosystems are richer in the omega‐3 long‐chain polyunsaturated fatty acid (n‐3 LC‐PUFA) docosahexaenoic acid (DHA ...
Cornelia W. Twining, Cameron M. Hudson, Jernej Bravničar, Antonella Carosi, Gaël P. J. Denys, Philine G. D. Feulner, Žiga Fišer, Hanna Rosinger, Verena Saladin, Linda Zanella, Davor Zanella, Catherine L. Peichel, Blake Matthews   +12 more
wiley   +1 more source

Effects Of Water Quality On Periphyton In The Pattani River, Yala Municipality, Thailand [TD370. V634 2008 f rb]. [PDF]

, 2008
Data collection and field surveys were carried out from March 1999 to February 2000 to study the effects of water quality on the periphyton populations in the Pattani River.
Rangpan, Vichit
core  

Distribution of Periphyton in the Upstream Section of Citarum River, West Java, Indonesia

Jurnal Biodjati, 2020
Periphyton indeed plays an undeniably vital role as primary producers in the food web within aquatic ecosystems such as rivers. The existence of periphyton will affect the populations of the aquatic organisms at higher trophic level, thus it is ...
Isma Noviana, Tri Dewi Kusuma Ningrum Pribadi, Keukeu Kaniawati Rosada   +2 more
doaj   +1 more source

Potential Impacts of Low Flows on Fish Foodscapes and Production in a Braided River

River Research and Applications, EarlyView.
ABSTRACT Changes in river discharge affect the physical composition and connectivity of habitats which, in turn, may shape the spatial distribution of fish food abundance, accessibility and quality—the ‘foodscape’—of river ecosystems. However, the influence of river flows on fish foodscapes has received very little attention from scientists. We studied
Rick J. Stoffels, Richard S. A. White, Gergely T. Torok, Richard J. Measures, Kristy L. Hogsden, Alex F. Rose, Paul W. Lambert, Jaret P. Bilewitch, S. Elizabeth Graham, Lisa Smith, Amber R. Brooks, Brian J. Smith   +11 more
wiley   +1 more source

Stomach content analyses of Simulium perflavum Roubaud 1906 (Diptera: Simuliidae) larvae from streams in Central Amazônia, Brazil

Memorias do Instituto Oswaldo Cruz, 2001
Stomach contents of Simulium perflavum Roubaud larvae were analyzed and compared with plankton and periphyton collected in five streams, in Central Amazonia (Manaus and Presidente Figueiredo counties), in Sep./Oct.1996 (dry season) and Feb./Mar.
Yamile B Alencar, Thelma A Veiga Ludwig, Climéia C Soares, Neusa Hamada   +3 more
doaj   +1 more source

Effects of Engineered Dam Releases on Benthic Assemblages During Drought and Comparison With Unregulated Reaches

River Research and Applications, EarlyView.
ABSTRACT River regulation following damming is often associated with deleterious downstream effects, in large part due to reduced total discharge and disruption of seasonal flooding. These effects would be expected to be exacerbated by drought, particularly extended drought.
Jeffrey G. Holmquist, Jutta Schmidt‐Gengenbach   +1 more
wiley   +1 more source

Structure and functional genes associated with carbon, nitrogen, phosphorus, and sulfur cycling processes in periphyton: A comparison between natural and artificial rivers

River, EarlyView.
Network analysis of functional genes among prokaryotes, and eukaryotes in natural and artificial rivers. Abstract Periphyton in aquatic ecosystems plays vital roles in the elemental cycle process and is vulnerable to anthropogenic interference. However, few studies have explored the elemental cycles of carbon (C), nitrogen (N), phosphorus (P), and ...
Yulu Tian, Jiezhang Mo, Jiaxin Liu, Chenghao Li, Jiahua Guo   +4 more
wiley   +1 more source