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19 results for “mammalian herbivory”
Data for Forb diversity globally is harmed by nutrient enrichment but can be rescued by large mammalian herbivory
Forbs (“wildflowers”) are important contributors to grassland biodiversity and services, but they are vulnerable to environmental changes that affect their coexistence with grasses. In a factorial experiment at 94 sites on 6 continents, we tested the global generality of several broad predictions arising from previous studies: (1) Forb cover and richness decline under nutrient enrichment, particularly nitrogen enrichment, which benefits grasses at the expense of forbs. (2) Forb cover and richness increase under herbivory by large mammals, especially when nutrients are enriched as grazing will release forbs from decreased grass competition under fertilization. (3) Forb richness and cover are less affected by nutrient enrichment and herbivory in more arid climates, because water limitation reduces the impacts of competition with grasses. We found strong evidence for the first, partial support for the second, and no support for the third prediction. Forb richness and cover are reduced by nutrient addition, with nitrogen having the greatest effect; forb cover is enhanced by large mammal herbivory, although only under conditions of nutrient enrichment and high herbivore intensity; and forb richness is lower in more arid sites, but is not affected by consistent climate-nutrient or climate-herbivory interactions. We also found that nitrogen enrichment disproportionately affects forbs in certain families (Asteraceae, Fabaceae). Our results underscore that anthropogenic nitrogen addition is a major threat to grassland forbs and the ecosystem services they support, but grazing under high herbivore intensity can offset these nutrient effects. For associated r code that goes along with this dataset, please refer to the following Zenodo repository: https://zenodo.org/records/14207290
Percent light penetration: Effect of N Addition on Vegetation with Mammalian Herbivory
The purpose of this experiment is to look at the effect of NH4NO3 addition in an unfenced area. The experiment is located in field E. There are 4 different treatments C, F, H, and I as defined in fertilization details in the "microplot" strategy. The plots are 4 by 4 meters and are laid out in an 8 by 8 grid with 1 meter aisles. From 1989-1994 plots with fertilizer treatment 1 were treated as complete controls, receiving no nutrients at all.
Plant aboveground biomass data: Effect of N Addition on Vegetation with Mammalian Herbivory
The purpose of this experiment is to look at the effect of NH4NO3 addition in an unfenced area. The experiment is located in field E. There are 4 different treatments C, F, H, and I as defined in fertilization details in the "microplot" strategy. The plots are 4 by 4 meters and are laid out in an 8 by 8 grid with 1 meter aisles. From 1989-1994 plots with fertilizer treatment 1 were treated as complete controls, receiving no nutrients at all.
Small mammal abundance: Effect of N Addition on Vegetation with Mammalian Herbivory
The purpose of this experiment is to look at the effect of NH4NO3 addition in an unfenced area. The experiment is located in field E. There are 4 different treatments C, F, H, and I as defined in fertilization details in the "microplot" strategy. The plots are 4 by 4 meters and are laid out in an 8 by 8 grid with 1 meter aisles. From 1989-1994 plots with fertilizer treatment 1 were treated as complete controls, receiving no nutrients at all.
Soil nitrogen: Effect of N Addition on Vegetation with Mammalian Herbivory
The purpose of this experiment is to look at the effect of NH4NO3 addition in an unfenced area. The experiment is located in field E. There are 4 different treatments C, F, H, and I as defined in fertilization details in the "microplot" strategy. The plots are 4 by 4 meters and are laid out in an 8 by 8 grid with 1 meter aisles. From 1989-1994 plots with fertilizer treatment 1 were treated as complete controls, receiving no nutrients at all.
Soil ammonium: Effect of N Addition on Vegetation with Mammalian Herbivory
The purpose of this experiment is to look at the effect of NH4NO3 addition in an unfenced area. The experiment is located in field E. There are 4 different treatments C, F, H, and I as defined in fertilization details in the "microplot" strategy. The plots are 4 by 4 meters and are laid out in an 8 by 8 grid with 1 meter aisles. From 1989-1994 plots with fertilizer treatment 1 were treated as complete controls, receiving no nutrients at all.
Soil nitrate: Effect of N Addition on Vegetation with Mammalian Herbivory
The purpose of this experiment is to look at the effect of NH4NO3 addition in an unfenced area. The experiment is located in field E. There are 4 different treatments C, F, H, and I as defined in fertilization details in the "microplot" strategy. The plots are 4 by 4 meters and are laid out in an 8 by 8 grid with 1 meter aisles. From 1989-1994 plots with fertilizer treatment 1 were treated as complete controls, receiving no nutrients at all.
Average soil nitrogen: Effect of N Addition on Vegetation with Mammalian Herbivory
The purpose of this experiment is to look at the effect of NH4NO3 addition in an unfenced area. The experiment is located in field E. There are 4 different treatments C, F, H, and I as defined in fertilization details in the "microplot" strategy. The plots are 4 by 4 meters and are laid out in an 8 by 8 grid with 1 meter aisles. From 1989-1994 plots with fertilizer treatment 1 were treated as complete controls, receiving no nutrients at all.
Gopher mounds: Effect of N Addition on Vegetation with Mammalian Herbivory
The purpose of this experiment is to look at the effect of NH4NO3 addition in an unfenced area. The experiment is located in field E. There are 4 different treatments C, F, H, and I as defined in fertilization details in the "microplot" strategy. The plots are 4 by 4 meters and are laid out in an 8 by 8 grid with 1 meter aisles. From 1989-1994 plots with fertilizer treatment 1 were treated as complete controls, receiving no nutrients at all.
Grasshopper data: Effect of N Addition on Vegetation with Mammalian Herbivory
The purpose of this experiment is to look at the effect of NH4NO3 addition in an unfenced area. The experiment is located in field E. There are 4 different treatments C, F, H, and I as defined in fertilization details in the "microplot" strategy. The plots are 4 by 4 meters and are laid out in an 8 by 8 grid with 1 meter aisles. From 1989-1994 plots with fertilizer treatment 1 were treated as complete controls, receiving no nutrients at all.
Grasshopper individual characteristics: Effect of N Addition on Vegetation with Mammalian Herbivory
The purpose of this experiment is to look at the effect of NH4NO3 addition in an unfenced area. The experiment is located in field E. There are 4 different treatments C, F, H, and I as defined in fertilization details in the "microplot" strategy. The plots are 4 by 4 meters and are laid out in an 8 by 8 grid with 1 meter aisles. From 1989-1994 plots with fertilizer treatment 1 were treated as complete controls, receiving no nutrients at all.
Plant aboveground biomass data: Effect of N Addition on Vegetation With Mammalian Herbivory Initially on Disked Ground
This experiment is identical to E008 except the ground was disked thoroughly before the plots were laid out. From 1989-1994, plots with fertilizer treatment 1 were treated as complete controls (treatment 9), receiving no nutrients at all.
Small mammal abundance: Effect of N Addition on Vegetation With Mammalian Herbivory Initially on Disked Ground
This experiment is identical to E008 except the ground was disked thoroughly before the plots were laid out. From 1989-1994, plots with fertilizer treatment 1 were treated as complete controls (treatment 9), receiving no nutrients at all.
Soil nitrogen: Effect of N Addition on Vegetation With Mammalian Herbivory Initially on Disked Ground
This experiment is identical to E008 except the ground was disked thoroughly before the plots were laid out. From 1989-1994, plots with fertilizer treatment 1 were treated as complete controls (treatment 9), receiving no nutrients at all.
Percent light penetration: Effect of N Addition on Vegetation With Mammalian Herbivory Initially on Disked Ground
This experiment is identical to E008 except the ground was disked thoroughly before the plots were laid out. From 1989-1994, plots with fertilizer treatment 1 were treated as complete controls (treatment 9), receiving no nutrients at all.
Gopher mounds: Effect of N Addition on Vegetation With Mammalian Herbivory Initially on Disked Ground
This experiment is identical to E008 except the ground was disked thoroughly before the plots were laid out. From 1989-1994, plots with fertilizer treatment 1 were treated as complete controls (treatment 9), receiving no nutrients at all.
Grasshopper data: Effect of N Addition on Vegetation With Mammalian Herbivory Initially on Disked Ground
This experiment is identical to E008 except the ground was disked thoroughly before the plots were laid out. From 1989-1994, plots with fertilizer treatment 1 were treated as complete controls (treatment 9), receiving no nutrients at all.
Grasshopper individual characteristics: Effect of N Addition on Vegetation With Mammalian Herbivory Initially on Disked Ground
This experiment is identical to E008 except the ground was disked thoroughly before the plots were laid out. From 1989-1994, plots with fertilizer treatment 1 were treated as complete controls (treatment 9), receiving no nutrients at all.
Savanna woody plants responses to mammalian herbivory and implications for management of livestock-wildlife landscape
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