Theoretical Ecology最新文献_第7页

Noise can create or erase long transient dynamics 噪声可以创建或消除长时间的瞬态动力学

IF 1.6 4区环境科学与生态学

Theoretical Ecology Pub Date : 2021-07-09 DOI: 10.1007/s12080-021-00518-6

J. Reimer, Jorge Arroyo-Esquivel, J. Jiang, H. Scharf, E. Wolkovich, K. Zhu, C. Boettiger

引用次数: 3

Be different to be better: the effect of personality on optimal foraging with incomplete knowledge 不同才能更好:个性对不完全知识下最优觅食的影响

IF 1.6 4区环境科学与生态学

Theoretical Ecology Pub Date : 2021-06-25 DOI: 10.1007/s12080-021-00517-7

Poppy M. Jeffries, S. Patrick, J. Potts

引用次数: 1

Habitat loss causes long extinction transients in small trophic chains 栖息地丧失导致小型营养链中的长期灭绝

IF 1.6 4区环境科学与生态学

Theoretical Ecology Pub Date : 2021-06-22 DOI: 10.1007/s12080-021-00509-7

Blai Vidiella, E. Fontich, S. Valverde, J. Sardanyés

引用次数: 6

Coexistence patterns and diversity in a trait-based metacommunity on an environmental gradient 环境梯度下基于性状的元群落的共存模式与多样性

IF 1.6 4区环境科学与生态学

Theoretical Ecology Pub Date : 2021-06-16 DOI: 10.1101/2021.06.15.448245

M.M.A. Mohammed, B. Blasius, A. Ryabov

{"title":"Coexistence patterns and diversity in a trait-based metacommunity on an environmental gradient","authors":"M.M.A. Mohammed, B. Blasius, A. Ryabov","doi":"10.1101/2021.06.15.448245","DOIUrl":"https://doi.org/10.1101/2021.06.15.448245","url":null,"abstract":"The dynamics of trait-based metacommunities have attracted much attention, but not much is known about how dispersal and spatial environmental variability mutually interact with each other to drive coexistence patterns and diversity. Here, we present a spatially explicit model of competition for two essential resources in a metacommunity on a one-dimensional environmental gradient. We find that both the strength of dispersal and the range of spatial environmental variability affect coexistence patterns, spatial structure, trait distribution, and local and regional diversity. Without dispersal, species are sorted according to their optimal growth conditions on the gradient. With the onset of dispersal, source-sink effects are initiated, which increases the effects of environmental filtering and interspecific competition and generates trait lumping, so that only a few species from an environment-defined trait range can survive. Interestingly, for very large dispersal rates, species distributions become spatially homogeneous, but nevertheless two species at the extreme ends of the trade-off curve can coexist for large environmental variability. Local species richness follows a classic hump-shaped dependence on dispersal rate, while local and regional diversity exhibit a pronounced peak for intermediate values of the environmental variability. Our findings provide important insights into the factors that shape the structure of trait-based metacommunities.","PeriodicalId":51198,"journal":{"name":"Theoretical Ecology","volume":"1 1","pages":"1-13"},"PeriodicalIF":1.6,"publicationDate":"2021-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45108100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Infect while the iron is scarce: nutrient-explicit phage-bacteria games 趁缺铁时感染:营养显性噬菌体-细菌游戏

IF 1.6 4区环境科学与生态学

Theoretical Ecology Pub Date : 2021-05-27 DOI: 10.1007/s12080-021-00508-8

Daniel Muratore, Joshua S. Weitz

{"title":"Infect while the iron is scarce: nutrient-explicit phage-bacteria games","authors":"Daniel Muratore, Joshua S. Weitz","doi":"10.1007/s12080-021-00508-8","DOIUrl":"https://doi.org/10.1007/s12080-021-00508-8","url":null,"abstract":"<p>Marine microbial primary production is influenced by the availability and uptake of essential nutrients, including iron. Although marine microbes have evolved mechanisms to scavenge sub-nanomolar concentrations of iron, recent observations suggest that viruses may co-opt these very same mechanisms to facilitate infection. The “Ferrojan Horse Hypothesis” proposes that viruses incorporate iron atoms into their tail fiber proteins to adsorb to target host receptors. Here, we propose an evolutionary game theoretic approach to consider the joint strategies of hosts and viruses in environments with limited nutrients (like iron). We analyze the bimatrix game and find that evolutionarily stable strategies depend on the stability and quality of nutrient conditions. For example, in highly stable iron conditions, virus pressure does not change host uptake strategies. However, when iron levels are dynamic, virus pressure can lead to fluctuations in the extent to which hosts invest in metabolic machinery that increases both iron uptake and susceptibility to viral infection. Altogether, this evolutionary game model provides further evidence that viral infection and nutrient dynamics jointly shape the fate of microbial populations.</p>","PeriodicalId":51198,"journal":{"name":"Theoretical Ecology","volume":"1 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138539849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The effect of colonization dynamics in competition for space in metacommunities 元群落空间竞争中的殖民化动力学效应

IF 1.6 4区环境科学与生态学

Theoretical Ecology Pub Date : 2021-05-26 DOI: 10.1007/s12080-021-00515-9

Jorge Arroyo-Esquivel, Nathan G. Marculis, A. Hastings

引用次数: 0

Applying symmetries of elasticities in matrix population models 弹性对称性在矩阵种群模型中的应用

IF 1.6 4区环境科学与生态学

Theoretical Ecology Pub Date : 2021-05-11 DOI: 10.1007/s12080-021-00513-x

S. Giaimo, A. Traulsen

引用次数: 1

Delayed maturity does not offset negative impact afflicted by ectoparasitism in salmon 延迟成熟并不能抵消三文鱼外寄生的负面影响