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Mixed Effects Models and Extensions in Ecology with R
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TLDR
In this paper, the authors apply additive mixed modelling on phyoplankton time series data and show that the additive model can be used to estimate the age distribution of small cetaceans.Abstract:
Limitations of linear regression applied on ecological data. - Things are not always linear additive modelling. - Dealing with hetergeneity. - Mixed modelling for nested data. - Violation of independence - temporal data. - Violation of independence spatial data. - Generalised linear modelling and generalised additive modelling. - Generalised estimation equations. - GLMM and GAMM. - Estimating trends for Antarctic birds in relation to climate change. - Large-scale impacts of land-use change in a Scottish farming catchment. - Negative binomial GAM and GAMM to analyse amphibian road killings. - Additive mixed modelling applied on deep-sea plagic bioluminescent organisms. - Additive mixed modelling applied on phyoplankton time series data. - Mixed modelling applied on American Fouldbrood affecting honey bees larvae. - Three-way nested data for age determination techniques applied to small cetaceans. - GLMM applied on the spatial distribution of koalas in a fragmented landscape. - GEE and GLMM applied on binomial Badger activity data.read more
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Journal ArticleDOI
Relative roles of temperature and photoperiod as drivers of metabolic flexibility in dark-eyed juncos.
TL;DR: Temperature appears to be a primary driver of flexibility in Ṁsum in juncos, but photoperiod-induced changes in Mb and catabolic enzyme activities, likely associated with migratory disposition, interact with temperature to contribute to seasonal phenotypes.
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Modeling annualized occurrence, frequency, and composition of ingrowth using mixed-effects zero-inflated models and permanent plots in the Acadian Forest Region of North America
TL;DR: In this article, a set of regression models based on discrete Poisson and negative binomial probability distributions for ingrowth data collected from permanent sample plots in the Acadian Forest Region of North America are presented.
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Protected areas act as a buffer against detrimental effects of climate change-Evidence from large-scale, long-term abundance data.
Petteri Lehikoinen,Petteri Lehikoinen,Andrea Santangeli,Kim Jaatinen,Ari Rajasärkkä,Aleksi Lehikoinen +5 more
TL;DR: Results show that PAs are essential in mitigating the retraction of northern species, but also facilitate northward expansions of southern species highly reliant on PAs, thereby contributing to the mitigation of impending biodiversity loss.
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Apparent competition drives community-wide parasitism rates and changes in host abundance across ecosystem boundaries.
Carol M. Frost,Guadalupe Peralta,Tatyana A. Rand,Raphael K. Didham,Arvind Varsani,Jason M. Tylianakis,Jason M. Tylianakis +6 more
TL;DR: It is shown that predicted apparent competitive effects between species, mediated via shared parasitoids, can significantly explain future parasitism rates and herbivore abundances and propagate across networks and habitats in important, predictable ways.
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Organohalogenated contaminants in white-tailed eagle (Haliaeetus albicilla) nestlings: An assessment of relationships to immunoglobulin levels, telomeres and oxidative stress.
Silja Sletten,Sophie Bourgeon,Bård-Jørgen Bårdsen,Dorte Herzke,François Criscuolo,Sylvie Massemin,Sandrine Zahn,Trond Vidar Johnsen,Jan Ove Bustnes +8 more
TL;DR: OHCs with different 'physicochemical' properties were related to immunoglobulin Y levels, superoxide dismutase enzyme activity in blood plasma, and telomere length in individual 7-8weeks old nestlings of white-tailed eagles in the Norwegian Sub-Arctic, suggesting that some legacy OCs challenge the antioxidant capacity in nestlings.