Lake in Brazil

Multiple trophic groups regulate the functioning of tropical shallow lakes

Moi, D; Romero, Gustavo Q.; Antiqueira, Pablo; Mormul, Roger Paulo; Teixeira de Mello, Franco; Bonecker, Claudia Human activities influence virtually all ecosystems around the globe, which has caused loss of trophic groups (trophic groups are defined as group of organisms within an ecosystem that occupy the same level in a food web) of the ecosystems in intensity never before recorded. Despite this, the importance of … Continue reading Multiple trophic groups regulate the functioning of tropical shallow lakes

The significance of biocrusts to soil multifunctionality is related to aridity

Yan‐gui Su, Jie Liu, Yuan‐ming Zhang, Gang Huang Biocrusts (composed of bryophytes, lichens, cyanobacteria and algae) provide important cover on the soil surface in drylands, improve soil health, and provide key ecosystem functions and services. Drylands are globally extensive, supporting up to 38% of the human population, and thus can vary substantially in physical and biotic characteristics, including the development of biocrusts. We lack understanding … Continue reading The significance of biocrusts to soil multifunctionality is related to aridity

Do grassland ecosystems have memory of previous-year precipitation?

Han, Juanjuan; Chen, Jiquan; Shi, Weiyu; Song, Jian; Hui, Dafeng; Ru, Jingyi; Wan, Shiqiang Climate models project that temperature will increase by 1.1 to 5.4°C by 2100. Extreme precipitation events including severe droughts are likely to increase in some regions of the world, especially in semi-arid grasslands. However, how the current year and previous years’ precipitation will influence grassland ecosystems remain unclear. Precipitation could influence … Continue reading Do grassland ecosystems have memory of previous-year precipitation?

Predicting tree community composition and forest productivity under climate change

Morin, Xavier; De Coligny, François; Martin-StPaul, Nicolas; Bugmann, Harald; Cailleret, Maxime; Limousin, Jean-Marc; Ourcival, Jean-Marc; Prévosto, Bernard; Simioni, Guillaume; Toigo, Maude; Vennetier, Michel; Cateau, Eugénie; Guillemot, Joannes Climate change impacts forests in many ways. It notably alters forest functioning and especially productivity, on which depends the capacity of forests to sequester carbon and provide services to human populations. It also affects the species composition of … Continue reading Predicting tree community composition and forest productivity under climate change

A lake with a diverse range of plant species

Multiple trophic groups regulate the functioning of tropical shallow lakes

Moi, D; Romero, Gustavo Q.; Antiqueira, Pablo; Mormul, Roger Paulo; Teixeira de Mello, Franco; Bonecker, Claudia Human activities influence virtually all ecosystems around the globe, which has caused loss of trophic groups (trophic groups are defined as group of organisms within an ecosystem that occupy the same level in a food web) of the ecosystems in intensity never before recorded. Despite this, the importance of … Continue reading Multiple trophic groups regulate the functioning of tropical shallow lakes

Predation has higher effects on traits of introduced prey at lower than higher latitudes

Diana P. López, Amy L. Freestone Predation is expected to increase in strength towards tropical regions.  While studies show predation can have a greater impact on the composition of prey communities at lower than higher latitudes, whether predation could also differentially impact traits of prey across different latitudes is mostly unknown, especially in marine communities.  Introduced prey, which lack an evolutionary history with resident predators, … Continue reading Predation has higher effects on traits of introduced prey at lower than higher latitudes

Distinct carbon fractions drive a generalisable two pool model of fungal necromass decomposition and impact nitrogen release

Craig R. See, Chris W. Fernandez, Anna M Conley, Lang C. DeLancey, Katherine A. Heckman, Peter G. Kennedy, Sarah E. Hobbie Fungi play a crucial role in the cycling of carbon and nutrients in terrestrial ecosystems. The majority of fungal research in ecology focuses on the effects of living fungi and the role they play as decomposers, pathogens, and symbionts. Recently, however, fungi are gaining … Continue reading Distinct carbon fractions drive a generalisable two pool model of fungal necromass decomposition and impact nitrogen release

Trampling by large animals and human activities shape polar tundra soils.

Stomping in silence: Conceptualizing trampling effects on soils in polar tundra

Maria Tuomi, Maria Väisänen, Henni Ylänne, Francis Q. Brearley, Isabel C Barrio, Kari Anne Bråthen, Isabell Eischeid, Bruce C. Forbes, Ingibjörg S. Jónsdóttir, Anders L. Kolstad, Petr Macek, Matteo Petit Bon, James D. M. Speed, Sari Stark, Kristin Svavarsdóttir, Jóhann Thórsson, C. Guillermo Bueno Across the world, soils are impacted by disturbances caused by trampling of large animals and us, humans, as well as by … Continue reading Stomping in silence: Conceptualizing trampling effects on soils in polar tundra

Stoichiometric and structural uncertainty in soil food web models

Robert W. Buchkowski and Zoë Lindo The organisms living in soil, such as mites, nematodes, and microorganisms, contribute to the release of elements like carbon and nitrogen from their food into mineral forms.  These forms often leave the soil as carbon dioxide gas, plant nitrogen uptake, or nitrogen runoff.  Soil ecologists are therefore very interested in understanding how each type of soil organism contributes to … Continue reading Stoichiometric and structural uncertainty in soil food web models

Norway spruce forest where the long-term nitrogen addition experiment used in this study was set up. Photograph by Benjamin Forsmark.

Does nitrogen-polluted air force microbes in boreal forests to extract more phosphorus from the environment?

Benjamin Forsmark, Håkan Wallander, Annika Nordin, Michael J. Gundale Nitrogen is a scarce nutrient in boreal forests and often limits the uptake and storage of carbon in plants and soils. Emissions of nitrogen from various human sources have dramatically increased the input of nitrogen into these forests during the past century and strengthened their carbon sink, and thereby contributed to cooling the climate. However, as … Continue reading Does nitrogen-polluted air force microbes in boreal forests to extract more phosphorus from the environment?