Results 31 to 40 of about 28,193 (230)

Seabird Trophic Position Across Three Ocean Regions Tracks Ecosystem Differences

Frontiers in Marine Science, 2018
We analyze recently collected feather tissues from two species of seabirds, the sooty tern (Onychoprion fuscatus) and brown noddy (Anous stolidus), in three ocean regions (North Atlantic, North Pacific, and South Pacific) with different human impacts ...
Tyler O. Gagné, K. David Hyrenbach, Molly E. Hagemann, Oron L. Bass, Stuart L. Pimm, Mark MacDonald, Brian Peck, Kyle S. Van Houtan, Kyle S. Van Houtan   +8 more
doaj   +1 more source

Regional Variation in the Trophic Ecology of Wahoo (Acanthocybium solandri) in the Western Atlantic Ocean

Fishes, 2023
Intrinsic tracers, such as stable isotopes of carbon and nitrogen, are common dietary markers that accumulate in the muscle tissue of consumers and can be used to determine the dietary sources and trophic positions of consumers. The aim of this study was
Brendan Gough, Alexandra Prouse, Michael A. Dance, R. J. David Wells, Jay R. Rooker   +4 more
doaj   +1 more source

Broad-scale perspective on body size-trophic position patterns of freshwater fishes at the intraspecific and community levels from individual-based data in China

Global Ecology and Conservation
As predators are generally larger than their prey, positive body size and trophic position relationships are typically assumed, and these relationships have helped in estimating and predicting the effects of global environmental change on the trophic ...
Yintao Jia, Yuzhu Han, Yihang Jiang, Chunlong Liu, Xiaoyun Sui, Ren Zhu, Xiang Tan, Xiu Feng, Mingdian Liu, Kemao Li, Yifeng Chen   +10 more
doaj   +1 more source

Network-Based Biomonitoring: Exploring Freshwater Food Webs With Stable Isotope Analysis and DNA Metabarcoding

Frontiers in Ecology and Evolution, 2019
Threatened freshwater ecosystems urgently require improved tools for effective management. Food web analysis is currently under-utilized, yet can be used to generate metrics to support biomonitoring assessments by measuring the stability and robustness ...
Zacchaeus G. Compson, Zacchaeus G. Compson, Zacchaeus G. Compson, Wendy A. Monk, Wendy A. Monk, Brian Hayden, Alex Bush, Alex Bush, Alex Bush, Zoë O'Malley, Mehrdad Hajibabaei, Mehrdad Hajibabaei, Teresita M. Porter, Teresita M. Porter, Michael T. G. Wright, Christopher J. O. Baker, Christopher J. O. Baker, Mohammad Sadnan Al Manir, Mohammad Sadnan Al Manir, R. Allen Curry, R. Allen Curry, Donald J. Baird, Donald J. Baird   +22 more
doaj   +1 more source

Estimating trophic position in marine and estuarine food webs [PDF]

Ecosphere, 2012
Structural or binary approaches, based on presence‐absence of feeding links, are the most common method of assembling food webs and form the basis of the most well explored food web models. Binary approaches to assembling feeding links are often criticized as being less powerful and accurate than flow‐based methods.
W. Mather A. Carscallen, Kristen Vandenberg, Julia M. Lawson, Neo D. Martinez, Tamara N. Romanuk   +4 more
openaire   +1 more source

Polyunsaturated fatty acids in fishes increase with total lipids irrespective of feeding sources and trophic position

Ecosphere, 2017
Trophic transfer and retention of dietary compounds are vital for somatic development, reproduction, and survival of aquatic consumers. In this field study, stable carbon and nitrogen isotopes, and fatty acids (FA) contents in invertebrates and fishes of
M. J. Kainz, H. H. Hager, S. Rasconi, K. K. Kahilainen, P.‐A. Amundsen, B. Hayden   +5 more
doaj   +1 more source

Mapping the Cerebral Organoid Landscape: A Systematic Review of Preclinical 3D Models in Neuroscience

Advanced Healthcare Materials, EarlyView.
Cerebral organoids are transforming brain research, yet the field remains fragmented. This comprehensive systematic review maps 738 studies published between 2014 and 2024 to uncover trends, gaps, and opportunities across neuroscience. Introducing OrganoidMap—an interactive, open‐access platform to explore and compare models—this work enables ...
Anna Wolfram, Vanessa Arnold, Maik Wolfram‐Schauerte, Anastassiya Moskalchuk, Caroline Trust, Marie Vontz, Mona Scheurenbrand, Vijayasarathy Sampath‐Kumar, Sogand Ahari, Carlos Romero‐Nieto, Lisa Sevenich   +10 more
wiley   +1 more source

Spatial variation, more than ontogenetic, explains the diet of Bryconamericus exodon in two Pantanal rivers

Acta Limnologica Brasiliensia
Aim Studies of natural variations in fish diet allow, in turn, a better understanding of environmental changes along the hydrological cycle that can affect resources and, hence, biodiversity conservation.
Karoline Aparecida de Sena, Yzel Rondon Súarez   +1 more
doaj   +1 more source

Comparison of Trophic Niche Position, Size, and Overlap in an Assemblage of Pacific Rockfish (Genus Sebastes) for Testing Community Composition Models

Diversity, 2022
Rockfish (genus Sebastes) assemblages can inform mechanisms of coexistence and maintenance of diversity in ecological communities. Coexistence theory characterizes ecological assemblages as following either a deterministic niche differentiation model, or
Andrew D. Suchomel, Mark C. Belk
doaj   +1 more source

Ecosystem type shapes trophic position and omnivory in fishes [PDF]

Fish and Fisheries, 2018
AbstractThe identification of patterns in ecological characteristics of organisms is a central challenge in macroecology with a growing research interest. The goal of this study was to establish whether patterns in trophic ecology (trophic position and omnivory) of fishes can be extended to an ecosystem dimension (freshwater vs.
Javier Sánchez‐Hernández, Per‐Arne Amundsen   +1 more
openaire   +2 more sources