Results 31 to 40 of about 262,989 (332)

Structural changes within trophic levels are constrained by within‐family assembly rules at lower trophic levels [PDF]

Ecology Letters, 2018
AbstractHistorical contingency broadly refers to the proposition that even random historical events can constrain the ecological and evolutionary pathways of organisms and that of entire communities. Focusing on communities, these pathways can be reflected into specific structural changes within and across trophic levels – how species interact with and
Song, Chuliang, Altermatt, Florian, Pearse, Ian, Saavedra Sanchez, Serguei   +3 more
openaire   +5 more sources

Water quality assessment, trophic classification and water resources management [PDF]

, 2010
Quantification of water quality (WQ) is an integral part of scientifically based water resources management. The main objective of this study was comparative analysis of two approaches applied for quantitative assessment of WQ: the trophic level index ...
Gal, Gideon, Hamilton, David P., Kasprzak, Peter, Ostapenia, Alexandr, Parparov, Arkadi   +4 more
core   +2 more sources

Isotopic fractionation and trophic position of zooplankton species in the Upper Paraná River floodplain Fracionamento isotópico e posição trófica de espécies zooplanctônicas da planície de inundação do alto rio Paraná

Brazilian Journal of Biology, 2011
This study aimed to evaluate the isotopic fractionation and trophic position of three zooplankton species (Notodiaptomus amazonicus, Moina minuta and Bosmina hagmanni) in the Upper Paraná River floodplain.
ARA Santana, E Benedito, C Ducatti, FA Lansac-Tôha   +3 more
doaj   +1 more source

The ecological significance of extremely large flocks of birds

Ecology and Evolution, 2019
Population size is generally limited by resource availability during and outside the breeding season. Therefore, maximum size of flocks may provide important information on population regulation and the influence of diet and trophic level on maximal ...
Anders Pape Møller, Karsten Laursen
doaj   +1 more source

Feeding and growth variations affect δ13C and δ15N budgets during ontogeny in a lepidopteran larva

Peer Community Journal, 2023
Isotopes are widely used in ecology to study food webs and physiology. The fractionation observed between trophic levels in nitrogen and carbon isotopes, explained by isotopic biochemical selectivity, is subject to important within-trophic level ...
Charberet, Samuel M., Maria, Annick, Siaussat, David, Gounand, Isabelle, Mathieu, Jérôme   +4 more
doaj   +1 more source

The trophic evolution of Lake Iseo as related to its holomixis

Journal of Limnology, 1999
Lake Iseo is undergoing a progressive deterioration in water quality, mainly due to eutrophication. This paper, based on measurements performed on the main tributaries and the outflow, considers the phosphorus, nitrogen and silica budget of the lake ...
Rosario MOSELLO, Michela ROGORA, Valeria MEZZANOTTE, Maria Cristina BRIZZIO, Letizia GARIBALDI   +4 more
doaj   +1 more source

Predicting plankton net community production in the Atlantic Ocean [PDF]

, 2009
We present, test and implement two contrasting models to predict euphotic zone net community production (NCP), which are based on 14C primary production (PO14CP) to NCP relationships over two latitudinal (ca.
Agustí, Anderson, Arístegui, Bender, Berges, Bisset, Blight, Boyd, Burke, Carol Robinson, Cota, Cyr, del Giorgio, del Giorgio, Doney, Duarte, Duarte, Duarte, Emerson, Emerson, Emilio Fernández, Eva Teira, Fasham, Fogg, Gavin Tilstone, González, Gruber, Hairston, Hairston, Hansell, Hansell, Hansell, Hanson, Harris, Jansson, Karl, Karl, Kiddon, Kiørboe, Laws, Legendre, Longhurst, Longhurst, Ludwig, Margalef, McGrady-Steed, McNaughton, Michaels, Najjar, Ono, Pablo Serret, Pace, Peters, Polis, Polis, Pomeroy, Pérez, Quay, Rivkin, Robinson, Robinson, Robinson, Scavia, Schindler, Serret, Serret, Serret, Serret, Serret, Smith, Sokal, Steinberg, Stephens, Strayer, Tamigneaux, Teira, Teira, Teira, Tremblay, Valesca Pérez, Vézina, Wiens, Williams, Williams, Williams, Yamanaka   +85 more
core   +1 more source

Exploitation, secondary extinction and the altered trophic structure of Jamaican coral reefs [PDF]

, 2010
Coral reef communities of the Greater Antilles in the Caribbean have a long history of anthropogenic disturbance, driven by the exploitation for food of both vertebrate and invertebrate species.
Peter D. Roopnarine, Rachel A. Hertog
core   +1 more source

Emergent global patterns of ecosystem structure and function from a mechanistic general ecosystem model [PDF]

, 2014
Anthropogenic activities are causing widespread degradation of ecosystems worldwide, threatening the ecosystem services upon which all human life depends.
A Friedlander, A Hardisty, B Cho, B Collen, B-E Sæther, BJ McGill, C Mora, C Ward-Paige, CA Deutsch, CB Field, CD Thomas, CEL Ferreira, CH Sekercioglu, CM Duarte, CR McClain, D Griffiths, D Policansky, D Post, D Yates, Derek P. Tittensor, DG Jenkins, Drew W. Purves, DW Purves, E Jeppesen, E Macpherson, E Odum, E Siemann, EA Fulton, FS Chapin, G Krinner, GA Kaufman, GM Mace, H Cyr, H Stibor, HR Peinetti, J Cebrian, J Chase, J Gasol, J Merilä, JA Carton, JE Cohen, JH Brown, JL Frangi, JM Sunday, Jon Hutton, JP Rodríguez, JS Millar, Jörn P. W. Scharlemann, K Rose, KA Nagy, KA Schubert, KE Jones, KR Buck, L Tremblay-Boyer, LLM Fedigan, LW Oring, M Behrenfeld, M González-Suárez, Matthew J. Smith, MBJ Harfoot, ME Power, Michael B. J. Harfoot, Michel Loreau, MJ Coe, MJ Morgan, MJ Smith, MJ Vander Zanden, MK Litvak, MR Evans, MW McCoy, N Blakley, N Loeuille, NG Hairston, O Krüger, P Abrams, P Del Giorgio, PK Holland, R Alkemade, R Bustamante, R Gentile, R Meek, R Shine, R Shine, RE Ricklefs, RE Ricklefs, RJ Williams, RJ Williams, RW Sheldon, RW Wilson, S Díaz, S Fretwell, S Jain, S Jennings, S Jennings, S Meiri, S Sitch, SA Sandin, SD Pletcher, Stephen Emmott, T Newbold, T Sousa, Tim Newbold, TJ Case, TJ Webb, U Brose, V Christensen, Vassily Lyutsarev, W Sprules, X Irigoien, Y-J Shin   +109 more
core   +4 more sources

Astrocyte‐Guided Maturation of Neural Constructs in a Modular Biosynthetic Hydrogel for Biohybrid Neurotechnologies

Advanced Functional Materials, EarlyView.
A modular biosynthetic PVA–gelatin hydrogel crosslinked via visible‐light thiol‐ene chemistry is engineered as a coating for neural electrodes. Optimizing matrix composition and mechanical properties enables the hydrogel to support astrocytic populations that guide neural differentiation and functional maturation.
Martina Genta, Sofia Peressotti, Roberto Portillo‐Lara, Josef Goding, Rylie Green   +4 more
wiley   +1 more source