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Nested diets: a novel pattern of individual-level resource use
Evidence of significant individual specialization is found in the gracile mouse opossum Gracilinanus microtarsus and this novel pattern is consistent with a recently proposed model of optimal foraging and implies strong asymmetry in the interactions among individuals of a population.
Diet of the gracile mouse opossum (Gracilinanus microtarsus) (Didelphimorphia: Didelphidae) in a Brazilian cerrado: patterns of food consumption and intrapopulation variation
It is suggested that differences in the number of food items detected in faeces between sexes within season and between seasons within sexes are related to energetic requirements associated with reproduction.
A Synthesis of Tagging Studies Examining the Behaviour and Survival of Anadromous Salmonids in Marine Environments
- S. M. Drenner, T. Clark, C. Whitney, E. G. Martins, S. Cooke, S. Hinch
- Environmental SciencePloS one
- 14 March 2012
Through the interdisciplinary application of existing and novel technologies, future research examining the behaviour and survival of anadromous salmonids could incorporate important drivers such as oceanography, tagging/handling effects, predation, and physiology.
Effects of river temperature and climate warming on stock‐specific survival of adult migrating Fraser River sockeye salmon (Oncorhynchus nerka)
Mean summer water temperatures in the Fraser River (British Columbia, Canada) have increased by ∼1.5 °C since the 1950s. In recent years, record high river temperatures during spawning migrations of…
Effects of maternal care on the lifetime reproductive success of females in a neotropical harvestman.
- B. Buzatto, Gustavo S Requena, E. G. Martins, G. Machado
- BiologyThe Journal of animal ecology
- 1 September 2007
It is suggested that maternal egg-guarding also constrains fecundity through physiological costs of egg production and increases female fitness due to the crucial importance of female presence aimed to prevent egg predation.
High river temperature reduces survival of sockeye salmon (Oncorhynchus nerka) approaching spawning grounds and exacerbates female mortality
Female and male survival differed but only when they experienced warm river temperatures, and it is suspected that females could be immuno- compromised and thus less resistant to pathogens whose rates of development are accelerated by warm temperatures.
Climate effects on growth, phenology, and survival of sockeye salmon (Oncorhynchus nerka): a synthesis of the current state of knowledge and future research directions
- E. G. Martins, S. Hinch, S. Cooke, D. Patterson
- Environmental ScienceReviews in Fish Biology and Fisheries
- 17 June 2012
It is revealed that associations between temperature and growth, phenology, or survival have been uncovered for all the life stages of sockeye salmon, whereas relationships with other climate-related variables have been sparse.
Description and ecology of a new species of sun spider (Arachnida: Solifugae) from the Brazilian Cerrado
- E. G. Martins, V. Bonato, G. Machado, R. Pinto‐da‐Rocha, L. S. Rocha
- Environmental Science
- 10 September 2004
The species is diurnal and showed two peaks of surface activity during the year: the highest peak occurred in the cold–dry season (June to July) and the smaller peak in the middle of the warm–wet season (December to February).
A moving target—incorporating knowledge of the spatial ecology of fish into the assessment and management of freshwater fish populations
- S. Cooke, E. G. Martins, C. Krueger
- Environmental ScienceEnvironmental Monitoring and Assessment
- 22 March 2016
Biological assessment, when informed by knowledge of spatial ecology, can provide managers with the ability to understand how and when fish and their habitats may be exposed to different threats.
Tracking the Conservation Promise of Movement Ecology
- K. Fraser, K. Davies, C. Davy, A. Ford, D. T. Flockhart, E. G. Martins
- Environmental ScienceFront. Ecol. Evol.
- 1 October 2018
From butterflies to elephants, the rapidly developing science of movement ecology is providing increasingly detailed spatio-temporal data on a wide array of mobile animals. Thus, this discipline also…