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Mixed Effects Models and Extensions in Ecology with R
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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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Recruitment failure of coastal predatory fish in the Baltic Sea coincident with an offshore ecosystem regime shift
Lars Ljunggren,Alfred Sandström,Ulf Bergström,Johanna Mattila,Antti Lappalainen,Gustav Johansson,Göran Sundblad,Michele Casini,Olavi Kaljuste,Britas Klemens Eriksson +9 more
TL;DR: The results indicate that the dramatic change in the offshore ecosystem may have propagated to the coast causing declines of the dominating coastal predators perch and pike followed by an increase in the abundance of small-bodied fish.
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Urban areas as hotspots for bees and pollination but not a panacea for all insects
Panagiotis Theodorou,Panagiotis Theodorou,Rita Radzevičiūtė,Guillaume Lentendu,Guillaume Lentendu,Belinda Kahnt,Martin Husemann,Martin Husemann,Christoph Bleidorn,Josef Settele,Josef Settele,Oliver Schweiger,Ivo Grosse,Tesfaye Wubet,Tomás E. Murray,Robert J. Paxton +15 more
TL;DR: It is shown that urban areas have high diversity of bees but not other insects, and high pollination provisioning, relative to rural sites, and it is found that ecotones in insect-friendly green cover surrounding both urban and rural sites boost pollination.
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Non-climatic constraints on upper elevational plant range expansion under climate change
Carissa D. Brown,Mark Vellend +1 more
TL;DR: This paper presents a unique combination of observations and experiments demonstrating that seed predation and soil properties strongly limit regeneration beyond the upper elevational range limit of sugar maple, a tree species of major economic importance.
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Testing the Amazon savannization hypothesis: fire effects on invasion of a neotropical forest by native cerrado and exotic pasture grasses.
Divino Silvério,Paulo M. Brando,Paulo M. Brando,Jennifer K. Balch,Francis E. Putz,Daniel C. Nepstad,Claudinei Oliveira-Santos,Mercedes M. C. Bustamante +7 more
TL;DR: The results indicate that synergies between fires and invasive C4 grasses jeopardize the future of tropical forests.
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Carotenoid Pigmentation in Antarctic Heterotrophic Bacteria as a Strategy to Withstand Environmental Stresses
TL;DR: Modeled results confirmed a positive effect of pigmentation on survivability and provide evidence that carotenoid pigmentation in heterotrophic bacteria isolated from Antarctic environments increases resistance to environmental stressors.