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- Author:
- Berec, Luděk
- Source:
- Oikos 2019 v.128 no.7 pp. 972-983
- ISSN:
- 0030-1299
- Subject:
- Allee effect; Lymantria dispar; adults; biodiversity; biological control agents; climate change; females; males; mating disruption; models; mortality; predation; temperature
- Abstract:
- ... Understanding how climate change affects population dynamics is crucial for assessing future of biodiversity. Here I ask how can Allee effects, occurring when mean individual fitness is reduced in rare populations, respond to increasing temperature. Despite the role Allee effects play in ecology of invasive, threatened and harvested populations, impacts of climate change on Allee effects are pract ...
- DOI:
- 10.1111/oik.05941
-
http://dx.doi.org/10.1111/oik.05941
- Author:
- Podofillini, Stefano; Cecere, Jacopo G.; Griggio, Matteo; Corti, Margherita; De Capua, Enrico L.; Parolini, Marco; Saino, Nicola; Serra, Lorenzo; Rubolini, Diego
- Source:
- Oikos 2019 v.128 no.7 pp. 943-959
- ISSN:
- 0030-1299
- Subject:
- Falco naumanni; adults; arms (limbs); birds; body condition; breeding; breeding season; ectoparasites; eggs; feathers; females; flight; food availability; life history; molting; nestlings; nests; oviposition; parasitism; population growth; rearing; reproductive success; resource allocation
- Abstract:
- ... The amount of food resources available to upper‐level consumers can show marked variations in time and space, potentially resulting in food limitation. The availability of food resources during reproduction is a key factor modulating variation in reproductive success and life‐history tradeoffs, including patterns of resource allocation to reproduction versus self‐maintenance, ultimately impacting ...
- DOI:
- 10.1111/oik.06067
-
http://dx.doi.org/10.1111/oik.06067
- Author:
- Cadier, Mathilde; Andersen, Ken H.; Visser, Andre W.; Kiørboe, Thomas
- Source:
- Oikos 2019 v.128 no.7 pp. 1027-1040
- ISSN:
- 0030-1299
- Subject:
- biomass; community structure; defense mechanisms; ecological communities; ecosystems; environmental factors; eutrophication; feeding methods; functional diversity; metabolism; models; plankton; seasonal variation; trophic relationships
- Abstract:
- ... The competition–defense tradeoff is a significant source of functional diversity in ecological communities. Here, we present a theoretical framework to describe the competition–defense tradeoff and apply it to a size‐based model of a unicellular plankton community. Specifically, we investigate how the emergent community structure depends on the shape of the tradeoff, and on whether the cost of def ...
- DOI:
- 10.1111/oik.06101
-
http://dx.doi.org/10.1111/oik.06101
- Author:
- Denelle, Pierre; Violle, Cyrille; Munoz, François
- Source:
- Oikos 2019 v.128 no.7 pp. 960-971
- ISSN:
- 0030-1299
- Subject:
- Bayesian theory; alpine plants; biogeography; case studies; immigration; leaves; plant communities; snowpack; variance
- Abstract:
- ... Understanding the imprint of environmental filtering on community assembly along environmental gradients is a key objective of trait‐gradient analyses. Depending on local constraints, this filtering generally entails that species departing from an optimum trait value have lower abundances in the community. The community‐weighted mean (CWM) and variance (CWV) of trait values are then expected to de ...
- DOI:
- 10.1111/oik.05851
-
http://dx.doi.org/10.1111/oik.05851
- Author:
- Grinath, Joshua B.; Larios, Loralee; Prugh, Laura R.; Brashares, Justin S.; Suding, Katharine N.
- Source:
- Oikos 2019 v.128 no.7 pp. 994-1004
- ISSN:
- 0030-1299
- Subject:
- arid grasslands; arid lands; burrows; ecosystem engineering; ecosystems; engineering; habitats; landscapes; rain; rodents; soil; soil resources; species diversity
- Abstract:
- ... Understanding processes that determine biodiversity is a fundamental challenge in ecology. At the landscape scale, physical alteration of ecosystems by organisms, called ecosystem engineering, enhances biodiversity worldwide by increasing heterogeneity in resource conditions and enhancing species coexistence across engineered and non‐engineered habitats. Engineering–diversity relationships can var ...
- DOI:
- 10.1111/oik.05768
-
http://dx.doi.org/10.1111/oik.05768
- Author:
- Lemoine, Nathan P.
- Source:
- Oikos 2019 v.128 no.7 pp. 912-928
- ISSN:
- 0030-1299
- Subject:
- Bayesian theory; analysis of variance; ecologists; ecology; evolution; guidelines; philosophy; statistical models
- Abstract:
- ... Throughout the last two decades, Bayesian statistical methods have proliferated throughout ecology and evolution. Numerous previous references established both philosophical and computational guidelines for implementing Bayesian methods. However, protocols for incorporating prior information, the defining characteristic of Bayesian philosophy, are nearly nonexistent in the ecological literature. H ...
- DOI:
- 10.1111/oik.05985
-
http://dx.doi.org/10.1111/oik.05985
- Author:
- Żywiec, Magdalena; Fedriani, José M.; Kurek, Przemysław; Holeksa, Jan
- Source:
- Oikos 2019 v.128 no.7 pp. 1041-1050
- ISSN:
- 0030-1299
- Subject:
- Cervus elaphus; Picea abies; browsing; deer; ecological footprint; forest ecosystems; insects; mortality; old-growth forests; saplings; stand structure; tree mortality; trophic relationships
- Abstract:
- ... Trophic plant–animal interactions (e.g. browsing by ungulates, insect attack) are an important and well‐studied source of mortality in many tree populations. Non‐trophic tree–animal interactions (e.g. deer antler rubbing) also frequently lead to tree death, and thus have significant effects on forest ecosystem functioning, but they are much less well studied than trophic interactions are. As deer ...
- DOI:
- 10.1111/oik.06071
-
http://dx.doi.org/10.1111/oik.06071
- Author:
- Naman, Sean M.; Ueda, Rui; Sato, Takuya
- Source:
- Oikos 2019 v.128 no.7 pp. 1005-1014
- ISSN:
- 0030-1299
- Subject:
- Oncorhynchus masou; body size; energy intake; fish; foraging; predation; predator avoidance; risk; socioeconomic status; streams; temperate forests
- Abstract:
- ... Dominance hierarchies and the resulting unequal resource partitioning among individuals are key mechanisms of population regulation. The strength of dominance hierarchies can be influenced by size‐dependent tradeoffs between foraging and predator avoidance whereby competitively inferior subdominants can access a larger proportion of limiting resources by accepting higher predation risk. Foraging‐p ...
- DOI:
- 10.1111/oik.05954
-
http://dx.doi.org/10.1111/oik.05954
- Author:
- Busse, Annika; Schoreisz, Jeremias J.; Petermann, Jana S.
- Source:
- Oikos 2019 v.128 no.7 pp. 929-942
- ISSN:
- 0030-1299
- Subject:
- Bromeliaceae; climate change; community structure; experimental design; fauna; predation; predators
- Abstract:
- ... Transplantation experiments are a useful method to identify responses of organisms to environmental change. However, they are typically restricted to single or few species. Our experiment was carried out using entire bromeliad‐inhabiting microfauna communities which were transplanted along an elevational gradient, simulating environmental change acting on the communities. Additionally, we manipula ...
- DOI:
- 10.1111/oik.05894
-
http://dx.doi.org/10.1111/oik.05894
- Author:
- Pernu, Tuomas K.; Helanterä, Heikki
- Source:
- Oikos 2019 v.128 no.7 pp. 905-911
- ISSN:
- 0030-1299
- Subject:
- evolution; genetic relationships; insect colonies; kin selection; social behavior; social insects
- Abstract:
- ... The kin selection theory has recently been criticised on the basis of claiming that genetic relatedness does not play a causal role in the social evolution among individuals of insect societies. We outline here a line of criticism of this view by demonstrating two things. First, there are strong conceptual, theoretical and empirical reasons to think that close genetic relatedness has been necessar ...
- DOI:
- 10.1111/oik.05887
-
http://dx.doi.org/10.1111/oik.05887
- Author:
- Reum, Jonathan C. P.; Blanchard, Julia L.; Holsman, Kirstin K.; Aydin, Kerim; Punt, André E.
- Source:
- Oikos 2019 v.128 no.7 pp. 1051-1064
- ISSN:
- 0030-1299
- Subject:
- databases; diet; ecosystems; food chain; models; mortality; ontogeny; piscivores; predation; predators; Bering Sea
- Abstract:
- ... Ontogenetic diet shifts are pervasive in food websbut rules governing their emergence and the implications for trophic cascades are only partly understood. Recent theoretical advances in multispecies size spectrum models (MSSMs) predict that the emergence of ontogenetic diet shifts are driven primarily by size‐selective predation and changes in the relative abundances of suitably sized prey. Howev ...
- DOI:
- 10.1111/oik.05630
-
http://dx.doi.org/10.1111/oik.05630
- Author:
- De Raedt, Jonathan; Baert, Jan M.; Janssen, Colin R.; De Laender, Frederik
- Source:
- Oikos 2019 v.128 no.7 pp. 1015-1026
- ISSN:
- 0030-1299
- Subject:
- ecosystems; herbicides; microalgae; species diversity
- Abstract:
- ... Dispersal of organisms can influence the relationship between beta‐diversity and regional productivity in heterogeneous environments. However, many ecosystems are also linked by fluxes of stressors, with an unknown influence on this relationship. In this study, we assess the relationship between beta‐diversity (measured as Bray–Curtis dissimilarity) and regional productivity (measured as biovolume ...
- DOI:
- 10.1111/oik.05191
-
http://dx.doi.org/10.1111/oik.05191
- Author:
- Just, Michael G.; Dale, Adam G.; Long, Lawrence C.; Frank, Steven D.
- Source:
- Oikos 2019 v.128 no.7 pp. 984-993
- ISSN:
- 0030-1299
- Subject:
- Acer rubrum; cities; landscapes; latitude; phytophagous insects; prediction; scale insects; temperature profiles; tree health; trees; urban areas; urbanization; water stress; United States
- Abstract:
- ... Urban landscapes are characterized by high proportions of impervious surface resulting in higher temperatures than adjacent natural landscapes. In some cities, like those at cooler latitudes, trees may benefit from warmer urban temperatures, but trees in many cities are beset with problems like drought stress and increased herbivory. What drives patterns of urban tree health across urbanization an ...
- DOI:
- 10.1111/oik.05874
-
http://dx.doi.org/10.1111/oik.05874