Results 11 to 20 of about 572,183 (121)

Trophic levels of fish species of commercial importance in the Colombian Caribbean

open access: yesRevista de Biología Tropical, 2011
Ecological studies on commercial important fish species are of great value to support resource management issues. This study calculated trophic levels of those Colombian Caribbean fish species whose diet has been locally described.
Camilo B García   +1 more
doaj   +2 more sources

Shearing Tooth Morphology May Allow Sharks to Access Higher Trophic Levels at Smaller Sizes. [PDF]

open access: yesEcol Evol
Predator morphology imposes limitations on prey selection due to biomechanical constraints, making some prey functionally inaccessible and thereby constraining predator trophic niches. We assessed how two key components of trophic morphology—tooth shape and body size—affect prey selectivity and trophic niche in two sympatric sharks with contrasting ...
Riverón S   +7 more
europepmc   +2 more sources

Flujo de compuestos organoclorados en las cadenas troficas de la cienaga de Santa Marta [PDF]

open access: yesCaldasia, 1993
Monthly samples of seston and fish species of different throphic levels were done at the Ciénaga Grande de Santa Marta in orderto describe organochlorinated compounds dynamics. The fish used were: atlantic anchoveta, mulletand catfish.
Hernado Campos Néstor, Ramírez Gustavo
doaj   +3 more sources

Host-plant sex and phenology of <i>Buddleja cordata</i> Kunth interact to influence arthropod communities. [PDF]

open access: yesEcol Evol
We present the results of an empirical study that evaluates the effect of plant sex on its associated arthropod communities. Our results indicate that plant sex has a seasonal and alternating effect on the arthropod community diversity—male plants hosting a more diverse community of arthropods during the flowering season, while female plants do during ...
González-Ramírez I   +4 more
europepmc   +2 more sources

Relación productividad - diversidad dentro y entre niveles tróficos de un ecosistema de pastizal [PDF]

open access: yes, 2014
Existe un interés histórico por las relaciones diversidad-productividad dentro y entre niveles tróficos y las relaciones diversidad-diversidad y productividad-productividad entre niveles tróficos.
Piñeiro Guerra, Juan Manuel
core   +1 more source

Efecto de las infecciones encubiertas por virus de RNA sobre las interacciones con distintos niveles tróficos de la rosquilla verde, Spodoptera exigua (Hübner) (Lepidoptera: Noctuidae) [PDF]

open access: yes, 2022
En los últimos años, el creciente interés por buscar nuevos agentes de control biológico y el fácil acceso a las tecnologías de secuenciación masiva ha facilitado el descubrimiento de un gran número de virus presentes en insectos.
Riahi, Chaymaa   +10 more
core  

Una secuencia didáctica para fortalecer la comprensión de los niveles tróficos y su función en la vida cotidiana en estudiantes de grado 4 de la institución educativa Rufino José Cuervo Sur – Sede Madre Marcelina

open access: yes, 2019
El objetivo general consistió en diseñar una secuencia didáctica para la enseñanza de las interacciones en el flujo de energía y los niveles tróficos, acudiendo a las necesidades encontradas por medio de un instrumento de ideas previas mediante el ...
Castellanos Martínez, Haider Isaac   +1 more
core   +2 more sources

Factores tróficos en neuronas dopaminérgicas mesencefálicas [PDF]

open access: yes, 1994
Desde su descubrimiento, se ha postulado, y en algunos casos comprobado, que los factores tróficos juegan un papel importante en el desarrollo, mantenimiento y regeneración del sistema nervioso.
Pinzón, G.   +3 more
core   +1 more source

When is the bait worth the risk? A mechanistic model of a compensatory ecological trap in seabirds

open access: yesFunctional Ecology, Volume 40, Issue 11, Page 3398-3421, November 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Ecological traps occur when organisms preferentially select habitats that reduce fitness. In seabird–fishery systems, fishery‐derived trophic subsidies can increase foraging success, reinforce habitat preference and indirectly enhance reproductive output or recruitment,
Cristóbal Anguita   +2 more
wiley   +1 more source

Response of endemic lizard populations to attempted eradication of invasive predators on a Galápagos island

open access: yesJournal of Applied Ecology, Volume 63, Issue 9, September 2026.
Integrating reptile monitoring into invasive predator eradication programmes can reveal rapid responses in ecologically important, yet frequently overlooked, components of island ecosystems. Accounting for habitat variation alongside changes in predator communities will improve interpretation of post‐eradication population responses and inform ...
Kirtana Kumar   +11 more
wiley   +1 more source

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