Results 1 to 10 of about 64 (62)

Arctic aquatic graminoid tundra responses to nutrient availability [PDF]

Biogeosciences, 2020
Abstract. Unraveling the environmental controls influencing Arctic tundra productivity is paramount for advancing our predictive understanding of the causes and consequences of warming in tundra ecosystems and associated land–atmosphere feedbacks. This study focuses on aquatic emergent tundra plants, which dominate productivity and methane fluxes in ...
C. G. Andresen, C. G. Andresen, V. L. Lougheed   +2 more
openaire   +3 more sources

Fertilized graminoids intensify negative drought effects on grassland productivity

Global Change Biology, 2021
Abstract Droughts can strongly affect grassland productivity and biodiversity, but responses differ widely. Nutrient availability may be a critical factor explaining this variation, but is often ignored in analyses of drought responses.
Kevin Van Sundert, Mohammed A. S. Arfin Khan, Siddharth Bharath, Yvonne M. Buckley, Maria C. Caldeira, Ian Donohue, Maren Dubbert, Anne Ebeling, Nico Eisenhauer, Anu Eskelinen, Alain Finn, Tobias Gebauer, Sylvia Haider, Amandine Hansart, Anke Jentsch, Angelika Kübert, Ivan Nijs, Charles A. Nock, Carla Nogueira, Anita J. Porath‐Krause, Dajana Radujković, Xavier Raynaud, Anita C. Risch, Christiane Roscher, Michael Scherer‐Lorenzen, Max A. Schuchardt, Martin Schütz, Julia Siebert, Judith Sitters, Marie Spohn, Risto Virtanen, Christiane Werner, Peter Wilfahrt, Sara Vicca   +33 more
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Graminoid Invasion in an Insular Endemism Hotspot and Its Protected Areas [PDF]

Diversity, 2019
Invasive plant species are increasingly altering species composition and the functioning of ecosystems from a local to a global scale. The grass species Pennisetum setaceum has recently raised concerns as an invader on different archipelagos worldwide.
Anna J. Walentowitz, Severin D. H. Irl, Aurelio Jesús Acevedo Rodríguez, Ángel Palomares-Martínez, Vanessa Vetter, Barbara Zennaro, Félix M. Medina, Carl Beierkuhnlein   +7 more
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Distribution of graminoids in open habitats in Tajikistan and Kyrgyzstan

Vegetation Classification and Survey, 2022
Aims: Landscapes of Middle Asia are exposed to human influence due to long-lasting pastoral tradition, and now are largely dominated by non-forest vegetation. Graminoids perform key ecosystem functions, and constitute an important feed source for livestock.
Sebastian Świerszcz, Grzegorz Swacha, Małgorzata W. Raduła, Sylwia Nowak   +3 more
openaire   +2 more sources

Cascading effects of earthworm invasion increase graminoid density and rodent grazing intensities

Ecology, 2023
AbstractHuman‐mediated dispersal of non‐native earthworms can cause substantial changes to the functioning and composition of ecosystems previously earthworm‐free. Some of these earthworm species have the potential to “geoengineer” soils and increase plant nitrogen (N) uptake.
Hanna Jonsson, Johan Olofsson, Gesche Blume‐Werry, Jonatan Klaminder   +3 more
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Endangered Oarisma poweshiek larvae vary their graminoid forage in Manitoba, Canada

The Canadian Entomologist, 2022
Abstract The Poweshiek skipperling (Oarisma poweshiek) is endemic to the tall grass prairie in North America and is now critically endangered globally. Existing populations are scattered among tall grass prairie remnants. However, the host food plants eaten by Poweshiek skipperling larvae, the vegetative and microclimatic descriptions of immature ...
Justis Henault, Richard Westwood
openaire   +2 more sources

Spatial pattern of invasive and native graminoids in the Brazilian cerrado [PDF]

Plant Ecology, 2019
Invasive grasses are an important threat in tropical savannas and grasslands and may be affected by natural and anthropogenic features of the environment. They may affect native species at a variety of scales, but a spatially explicit assessment of their effects is lacking.
Pavel Dodonov, Karen A. Harper, Rafael de Oliveira Xavier, Dalva M. Silva Matos   +3 more
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Organic carbon from graminoid roots as a driver of fermentation in a fen

FEMS Microbiology Ecology, 2021
ABSTRACT Fen Schlöppnerbrunnen is a moderately acidic methane-emitting peatland overgrown by Molinia caerulea and other wetland graminoids (e.g. Carex rostrata). Recently, the accumulation of H2, an indicator for fermentation, was observed with anoxically incubated C. rostrata roots but not with root-free fen soil. Based on this finding,
Anja B Meier, Sindy Oppermann, Harold L Drake, Oliver Schmidt   +3 more
openaire   +2 more sources

Models for predicting fire ignition probability in graminoids from boreo–temperate moorland ecosystems [PDF]

International Journal of Wildland Fire, 2016
An increase in both the frequency and severity of wildfires in boreo–temperate ecosystems is predicted. Therefore, to develop efficient fire rating systems, the relationship between the fuel moisture content (FMC) of vegetation and ignition thresholds needs to be determined.
Santana, Victor M, Marrs, Rob H
openaire   +2 more sources

Small rodent disturbance impact on Arctic graminoid forage quality

Polar Biology
Abstract Arctic rodents influence tundra plant communities by altering species diversity, structure, and nutrient dynamics. These dynamics are intensified during rodent population peaks. Plants are known to induce defenses in response to rodent herbivory.
Gerardo Celis, Kari Anne Bråthen, Dorothee Ehrich, Oliver Paine, Matt Sponheimer, Mary Heskel, Eeva M. Soininen, Peter Ungar   +7 more
openaire   +1 more source