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7 results on '"Pettit, Jessika M."'

1. Historical Disturbances Determine Current Taxonomic, Functional and Phylogenetic Diversity of Saproxylic Beetle Communities in Temperate Primary Forests

Author

Kozák, Daniel, Svitok, Marek, Wiezik, Michal, Mikoláš, Martin, Thorn, Simon, Buechling, Arne, Hofmeister, Jeňýk, Matula, Radim, Trotsiuk, Volodymyr, Bače, Radek, Begovič, Krešimir, Čada, Vojtěch, Dušátko, Martin, Frankovič, Michal, Horák, Jakub, Janda, Pavel, Kameniar, Ondrej, Nagel, Thomas A., Pettit, Joseph L., Pettit, Jessika M., Synek, Michal, Wieziková, Adela, and Svoboda, Miroslav

Published
2021
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2. Historical mixed-severity disturbances shape current diameter distributions of primary temperate Norway spruce mountain forests in Europe

Author

Rodrigo, Ruffy, primary, Pettit, Joseph L., additional, Matula, Radim, additional, Kozák, Daniel, additional, Bače, Radek, additional, Pavlin, Jakob, additional, Janda, Pavel, additional, Mikoláš, Martin, additional, Nagel, Thomas A., additional, Schurman, Jonathan, additional, Trotsiuk, Volodymyr, additional, Vostarek, Ondřej, additional, Frankovič, Michal, additional, Pettit, Jessika M., additional, Buechling, Arne, additional, Čada, Vojtěch, additional, Begovič, Krešimir, additional, Chaskovskyy, Oleh, additional, Teodosiu, Marius, additional, Saulnier, Mélanie, additional, Dušátko, Martin, additional, Kníř, Tomáš, additional, Kameniar, Ondrej, additional, Málek, Jakub, additional, Synek, Michal, additional, Gloor, Rhiannon, additional, and Svoboda, Miroslav, additional

Published
2022
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3. Historical natural disturbances shape spruce primary forest structure and indirectly influence bird assemblage composition

Author

Kameniar, Ondrej, primary, Baláž, Michal, additional, Svitok, Marek, additional, Reif, Jiří, additional, Mikoláš, Martin, additional, Pettit, Joseph L., additional, Keeton, William S., additional, Pettit, Jessika M., additional, Vostarek, Ondřej, additional, Langbehn, Thomas, additional, Trotsiuk, Volodymyr, additional, Morelli, Federico, additional, Frankovič, Michal, additional, Kozák, Daniel, additional, Janda, Pavel, additional, Čada, Vojtěch, additional, Ferenčík, Matej, additional, Málek, Jakub, additional, Begovič, Krešimir, additional, Synek, Michal, additional, Lábusová, Jana, additional, Svobodová, Kristýna, additional, and Svoboda, Miroslav, additional

Published
2021
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5. Historical Disturbances Determine Current Taxonomic, Functional and Phylogenetic Diversity of Saproxylic Beetle Communities in Temperate Primary Forests

Author

Kozák, Daniel, primary, Svitok, Marek, additional, Wiezik, Michal, additional, Mikoláš, Martin, additional, Thorn, Simon, additional, Buechling, Arne, additional, Hofmeister, Jeňýk, additional, Matula, Radim, additional, Trotsiuk, Volodymyr, additional, Bače, Radek, additional, Begovič, Krešimir, additional, Čada, Vojtěch, additional, Dušátko, Martin, additional, Frankovič, Michal, additional, Horák, Jakub, additional, Janda, Pavel, additional, Kameniar, Ondrej, additional, Nagel, Thomas A., additional, Pettit, Joseph L., additional, Pettit, Jessika M., additional, Synek, Michal, additional, Wieziková, Adela, additional, and Svoboda, Miroslav, additional

Published
2020
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6. Engelmann Spruce Survival and Regeneration After an Epidemic Spruce Beetle Outbreak on the Markagunt Plateau in Southern Utah

Author

Pettit, Jessika M.

Subjects
disturbance, regeneration, fungi, Picea engelmanii, carbon isotope analysis, climate, Environmental Sciences
Abstract

Bark beetle outbreaks are becoming more intense and severe when coupled with the effects of climate change. Engelmann spruce (Picea engelmannii) is one such species facing large-scale, epidemic spruce beetle outbreaks. Large-scale disturbances, such as beetle outbreaks, have major consequences for the future success of the ecosystem, thus highlighting the importance of understanding what promotes amplified outbreaks as well as their effects on future seedling establishment. Our research focused on two parts of a large-scale beetle outbreak: the mortality of spruce trees and the subsequent regeneration of seedlings. Our first study examined the timing of spruce mortality during an outbreak in order to identify the extent to which drought promotes host species mortality. Trees that are drought stressed have less resources to defend themselves against beetle attacks, however, the warmer temperatures associated with droughts also promote a more rapid population expansion of spruce beetles. We were specifically interested in determining the contribution that host drought stress plays during an epidemic outbreak. Our second study analyzed the patterns of regenerating seedlings with an aim to identify changes associated with the outbreak. Specifically, we were interested in how an epidemic outbreak changes the drivers of seedling establishment.

Published
2018
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