Results 121 to 130 of about 65,254 (294)

Sources of variation in small rodent trophic niche: New insights from DNA metabarcoding and stable isotope analysis [PDF]

, 2011
Intraspecific competition for food is expected to increase the trophic niche width of consumers, defined here as their diet diversity, but this process has been little studied in herbivores.
Soininen, Eeva M, Ehrich, Dorothee, Lecomte, Nicolas, Yoccoz, Nigel Gilles, Tarroux, Arnaud, Berteaux, Dominique, Gauthier, Gilles, Gielly, Ludovic, Brochmann, Christian, Gussarova, Galina, Ims, Rolf Anker   +10 more
core   +5 more sources

Precipitation and tree biomass correlate with the diversity and functional composition of tropical rainforest cricket assemblages across climate and disturbance gradients

Ecography, EarlyView.
Disturbance‐driven changes in rainforest structure and environmental conditions can alter ecosystem functioning, yet the consequences for invertebrate communities – key contributors to decomposition, herbivory, and trophic interactions – are not fully understood, particularly in relation to structural changes in vegetation.
Charlotte E. Raven, Andy G. Howe, David C. F. Rentz, Emma J. Mackintosh, Andrew R. Marshall, Helen F. Nahrung   +5 more
wiley   +1 more source

Foraging Activity and Trophic Spectrum of Red Ant Pogonomyrmex barbatus Smith, 1858, in Productivity-Contrasted Microenvironments

Psyche: A Journal of Entomology, 2012
Foraging strategies can be influenced by many factors such as abundance, availability, and toxicity of the resources. In arid zones, the distribution and productivity of plants also act as additional factors that affect foraging strategies.
Rafael Guzmán-Mendoza, Gabriela Castaño-Meneses, José Alejandro Zavala-Hurtado   +2 more
doaj   +1 more source

Projected Warming of the Southern Ocean Disrupts Embryonic Development and Hatch Timing in Antarctic Fish

Global Change Biology Communications, EarlyView.
Embryos are particularly sensitive to thermal challenge. Antarctic fish embryos raised at projected Southern Ocean temperatures hatch during the winter, have a high incidence of morphological abnormalities, have shorter body lengths, and express genes indicative of cellular stress.
Margaret Streeter, Nathalie R. Le François, Thomas Desvignes, Jacob Grondin, John H. Postlethwait, H. William Detrich III, Jacob M. Daane   +6 more
wiley   +1 more source

Wild Animal Suffering Is Not Intractable: A Precautionary Approach to Compassionate Intervention

Journal of Applied Philosophy, EarlyView.
ABSTRACT Wild animals suffer due to human activity, yet natural factors contribute far more significantly to their suffering. In light of this, some propose that we have a pro tanto obligation to intervene in ecosystems to improve wild animal welfare.
Tristan Katz
wiley   +1 more source

High intraspecific variability in the functional niche of a predator is associated with ontogenetic shift and individual specialization

Ecology and Evolution, 2014
Investigations on the functional niche of organisms have primarily focused on differences among species and tended to neglect the potential effects of intraspecific variability despite the fact that its potential ecological and evolutionary importance is
Tian Zhao, Sébastien Villéger, Sovan Lek, Julien Cucherousset   +3 more
doaj   +1 more source

Acute and Chronic Toxicity of Sediments Containing Platinum and Palladium on Freshwater Benthic Organisms Chironomus riparius and Hyalella azteca

Journal of Applied Toxicology, EarlyView.
ABSTRACT The expanding demand for platinum group elements (PGEs) in industrial and medical applications has led to their increasing accumulation in aquatic sediments. However, their ecological impacts remain poorly understood, particularly for sediment‐dwelling invertebrates. This study assessed the toxicity of platinum (Pt) and palladium (Pd) across a
Alice Carle, Ludivine Preizal, Marc Amyot, Maikel Rosabal   +3 more
wiley   +1 more source

Comparing the Last Interglacial (MIS 5e) with the present interglacial period (MIS 1) using a multidimensional functional diversity analysis: The marine molluscs from Santa Maria Island (Azores Archipelago, central Atlantic) as a case study

Journal of Quaternary Science, EarlyView.
ABSTRACT Marine fossil records hold outstanding importance for ecological, evolutionary and biogeographical studies. Santa Maria Island in the Azores Archipelago (central Atlantic) features a remarkable marine fossil record spanning from the Pliocene to recent times.
Sérgio P. Ávila, Samuel Arruda, Luís Silva, Ana Hipólito, Rui Quartau, Ricardo S. Ramalho, Patrícia Madeira, Carlos S. Melo, Lara Baptista, Ana Cristina Rebelo, Gustavo M. Martins, Gonçalo Castela Ávila, Mohamed Amine Doukani, Esther Martín‐González, Daniele Scarponi, Alfred Uchman, Markes Johnson   +16 more
wiley   +1 more source

Structural stability of plant–pollinator interactions despite seasonal abundance of long‐tongued hawkmoths

Oikos, EarlyView.
Seasonal environmental cycles affect plant–pollinator interactions by altering plant phenology. Periods of low resource availability can filter pollinators and reduce the complexity of interaction networks, but the extent to which the functional morphology of pollinators influences such filtering remains unclear.
Ugo M. Diniz, Luis M. Primo, Francisco A. R. Santos, Isabel C. Machado   +3 more
wiley   +1 more source

Ecosystem, spatial and trophic dimensions of niche partitioning among freshwater fish predators

Movement Ecology
Background Niche partitioning allows species to diversify resource utilisation and space allocation and reduce interspecific competition. Variations in abiotic and biotic conditions in different ecosystems may further influence resource availability and ...
Milan Říha, Lukáš Vejřík, Rubén Rabaneda-Bueno, Ivan Jarić, Marie Prchalová, Ivana Vejříková, Marek Šmejkal, Petr Blabolil, Martin Čech, Vladislav Draštík, Michaela Holubová, Tomáš Jůza, Karl Ø. Gjelland, Zuzana Sajdlová, Luboš Kočvara, Michal Tušer, Jiří Peterka   +16 more
doaj   +1 more source