Search Results - "Donaldson, Jason E."

Invasion trajectory of alien trees: the role of introduction pathway and planting history by Donaldson, Jason E, Hui, Cang, Richardson, David M, Robertson, Mark P, Webber, Bruce L, Wilson, John R.U

“…Global change is driving a massive rearrangement of the world's biota. Trajectories of distributional shifts are shaped by species traits, the recipient…”
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Fire, grazers, and browsers interact with grass competition to determine tree establishment in an African savanna by Donaldson, Jason E., Holdo, Ricardo, Sarakikya, Jeremia, Anderson, T. Michael

“…In savanna ecosystems, fire and herbivory alter the competitive relationship between trees and grasses. Mechanistically, grazing herbivores favor trees by…”
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Alternate Grassy Ecosystem States Are Determined by Palatability–Flammability Trade-Offs by Hempson, Gareth P., Archibald, Sally, Donaldson, Jason E., Lehmann, Caroline E.R.

“…Fire and mammalian grazers both consume grasses, and feedbacks between grass species, their functional traits, and consumers have profound effects on grassy…”
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Ecological engineering through fire-herbivory feedbacks drives the formation of savanna grazing lawns by Donaldson, Jason E., Archibald, Sally, Govender, Navashni, Pollard, Drew, Luhdo, Zoë, Parr, Catherine L.

“…1. Variation in grass height is beneficial to biodiversity conservation in savanna landscapes. Theory predicts that small fires can promote short-grass areas…”
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Effects of migratory animals on resident parasite dynamics by Donaldson, Jason E., Ezenwa, Vanessa O., Morrison, Thomas A., Holdo, Ricardo M.

“…Migratory movement shapes infectious disease dynamics within migratory populations, but also impacts the disease dynamics of resident (non-migratory) species…”
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Small‐scale fires interact with herbivore feedbacks to create persistent grazing lawn environments by Singh, Jenia, Donaldson, Jason E., Archibald, Sally, Parr, Catherine L., Voysey, Michael D., Davies, Andrew B.

“…Fire‐herbivory feedbacks strongly influence the formation of grazing lawns in savanna ecosystems. Preliminary findings suggest that small‐scale (<25 ha) fires…”
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Sapling growth gradients interact with homogeneous disturbance regimes to explain savanna tree cover discontinuities by Holdo, Ricardo M., Donaldson, Jason E., Rugemalila, Deusdedith M., Anderson, T. Michael

“…Savanna tree cover often exhibits sudden discontinuities across space. It has been proposed that local spatial processes imposed by variation in tree cover…”
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The role of browsers in maintaining the openness of savanna grazing lawns by Voysey, Michael D., Archibald, Sally, Bond, William J., Donaldson, Jason E., Carla Staver, A., Greve, Michelle, Sankaran, Mahesh

“…In savannas, ruminant herbivores can have divergent impacts on tree recruitment and subsequent woody cover. Whereas heavy grazing by cattle results in woody…”
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Pyrodiversity interacts with rainfall to increase bird and mammal richness in African savannas by Beale, Colin M., Courtney Mustaphi, Colin J., Morrison, Thomas A., Archibald, Sally, Anderson, T. Michael, Dobson, Andrew P., Donaldson, Jason E., Hempson, Gareth P., Probert, James, Parr, Catherine L., Mayfield, Margaret

“…Fire is a fundamental process in savannas and is widely used for management. Pyrodiversity, variation in local fire characteristics, has been proposed as a…”
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The generality of cryptic dietary niche differences in diverse large-herbivore assemblages by Pansu, Johan, Hutchinson, Matthew C, Anderson, T Michael, Te Beest, Mariska, Begg, Colleen M, Begg, Keith S, Bonin, Aurelie, Chama, Lackson, Chamaillé-Jammes, Simon, Coissac, Eric, Cromsigt, Joris P G M, Demmel, Margaret Y, Donaldson, Jason E, Guyton, Jennifer A, Hansen, Christina B, Imakando, Christopher I, Iqbal, Azwad, Kalima, Davis F, Kerley, Graham I H, Kurukura, Samson, Landman, Marietjie, Long, Ryan A, Munuo, Isaack Norbert, Nutter, Ciara M, Parr, Catherine L, Potter, Arjun B, Siachoono, Stanford, Taberlet, Pierre, Waiti, Eusebio, Kartzinel, Tyler R, Pringle, Robert M

“…Ecological niche differences are necessary for stable species coexistence but are often difficult to discern. Models of dietary niche differentiation in large…”
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Anthropogenic modifications to fire regimes in the wider Serengeti‐Mara ecosystem by Probert, James R., Parr, Catherine L., Holdo, Ricardo M., Anderson, T. Michael, Archibald, Sally, Courtney Mustaphi, Colin J., Dobson, Andrew P., Donaldson, Jason E., Hopcraft, Grant C., Hempson, Gareth P., Morrison, Thomas A., Beale, Colin M.

“…Fire is a key driver in savannah systems and widely used as a land management tool. Intensifying human land uses are leading to rapid changes in the fire…”
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Drought and fire determine juvenile and adult woody diversity and dominance in a semi‐arid African savanna by Trotter, Felix D., Lehmann, Caroline E. R., Donaldson, Jason E., Mangena, Happy E., Parr, Catherine L., Archibald, Sally

“…The aim of this study was to understand how communities of adult and juvenile (seedlings and saplings) woody plants were impacted by fire and the 2014–2016 El…”
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Direct and indirect effects of fire on parasites in an African savanna by Donaldson, Jason E., Holdo, Ricardo M., Anderson, T. Michael, Morrison, Thomas A., Hopcraft, J. Grant C., McIntyre, Jennifer, Devaney, Eileen, Hempson, Gareth, Senso, Basil, Trentinus, Aidan, Ezenwa, Vanessa O.

“…Fires in grassy ecosystems consume vegetation and initiate high‐quality regrowth, which results in pyric herbivory when mammalian grazers concentrate feeding…”
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Interplay of competition and facilitation in grazing succession by migrant Serengeti herbivores by Anderson, T Michael, Hepler, Staci A, Holdo, Ricardo M, Donaldson, Jason E, Erhardt, Robert J, Hopcraft, J Grant C, Hutchinson, Matthew C, Huebner, Sarah E, Morrison, Thomas A, Muday, Jeffry, Munuo, Issack N, Palmer, Meredith S, Pansu, Johan, Pringle, Robert M, Sketch, Robert, Packer, Craig

“…Competition, facilitation, and predation offer alternative explanations for successional patterns of migratory herbivores. However, these interactions are…”
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Scale-area curves: a tool for understanding the ecology and distribution of invasive tree species by Donaldson, Jason E, Richardson, David M, Wilson, John R. U

“…Scale-area curves are increasingly used in ecology to predict population trajectories, based on the assumption that observed patterns are indicative of…”
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TROPHIC INTERACTIONS DRIVE TREE ESTABLISHMENT IN THE SERENGETI ECOSYSTEM by Donaldson, Jason E., Holdo, Ricardo, Sarakikya, Jeremia, Anderson, T. Michael

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Scale-area curves: a tool for understanding the ecology and distribution of invasive tree species: Tree invasions: patterns, processes, challenges and opportunities by DONALDSON, Jason E, RICHARDSON, David M, WILSON, John R. U

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