Joe Giersch (Former Employee)
Science and Products
Filter Total Items: 21
Specialized meltwater biodiversity persists despite widespread deglaciation Specialized meltwater biodiversity persists despite widespread deglaciation
Glaciers are important drivers of environmental heterogeneity and biological diversity across mountain landscapes. Worldwide, glaciers are receding rapidly due to climate change, with important consequences for biodiversity in mountain ecosystems. However, the effects of glacier loss on biodiversity have never been quantified across a mountainous region, primarily due to a lack of...
Authors
Clint C. Muhlfeld, Timothy Joseph Cline, J. Joseph Giersch, Erich H. Peitzsch, Caitlyn Florentine, Dean Jacobsen, Scott Hotaling
Climate-induced expansions of invasive species in the Pacific Northwest, North America: A synthesis of observations and projections Climate-induced expansions of invasive species in the Pacific Northwest, North America: A synthesis of observations and projections
Climate change may facilitate the expansion of non-native invasive species (NIS) in aquatic and terrestrial systems. However, empirical evidence remains scarce and poorly synthesized at scales necessary for effective management. We conducted a literature synthesis to assess the state of research on the observed and predicted effects of climate change on a suite of 398 aquatic and...
Authors
Jennifer Gervais, Ryan P. Kovach, Adam J. Sepulveda, Robert K. Al-Chokhachy, J. Joseph Giersch, Clint C. Muhlfeld
Global status of trout and char: Conservation challenges in the twenty-first century Global status of trout and char: Conservation challenges in the twenty-first century
Freshwater ecosystems are among the most threatened ecosystems in the world (Richter et al. 1997; Strayer and Dudgeon 2010), and freshwater fishes may now be the most threatened group of vertebrates (Ricciardi and Rasmussen 1999; Vorosmarty et al. 2010; Darwall and Freyhof 2016). Of the 7,300 freshwater fish species globally assessed by the International Union for Conservation of Nature...
Authors
Clint C. Muhlfeld, Daniel C. Dauwalter, Vincent S. D’Angelo, Andrew Ferguson, J. Joseph Giersch, Dean Impson, Itsuro Koizumi, Ryan Kovach, Philip McGinnity, Johannes Schoeffmann, John Epifanio, Leif Asbjørn Vøllestad
Microbial assemblages reflect environmental heterogeneity in alpine streams Microbial assemblages reflect environmental heterogeneity in alpine streams
Alpine streams are dynamic habitats harboring substantial biodiversity across small spatial extents. The diversity of alpine stream biota is largely reflective of environmental heterogeneity stemming from varying hydrological sources. Globally, alpine stream diversity is under threat as meltwater sources recede and stream conditions become increasingly homogeneous. Much attention has...
Authors
Scott Hotaling, Mary E. Foley, Lydia Zeglin, Debra S. Finn, Lusha M. Tronstad, J. Joseph Giersch, Clint C. Muhlfeld, David W. Weisrock
An integrated framework for ecological drought across riverscapes of North America An integrated framework for ecological drought across riverscapes of North America
Climate change is increasing the severity and extent of extreme droughts events, posing a critical threat to freshwater ecosystems, particularly with increasing human demands for diminishing water supplies. Despite the importance of drought as a significant driver of ecological and evolutionary dynamics, current understanding of drought consequences for freshwater biodiversity is very...
Authors
Ryan Kovach, Jason B. Dunham, Robert Al-Chokhachy, Craig Snyder, Erik A. Beever, Gregory T. Pederson, Abigail Lynch, Nathaniel P. Hitt, Christopher P. Konrad, Kristin L. Jaeger, Alan H. Rea, Adam J. Sepulveda, Patrick M. Lambert, Jason M. Stoker, J. Joseph Giersch, Clint C. Muhlfeld
Congruent population genetic structure but differing depths of divergence for three alpine stoneflies with similar ecology and geographic distributions Congruent population genetic structure but differing depths of divergence for three alpine stoneflies with similar ecology and geographic distributions
Comparative population genetic studies provide a powerful means for assessing the degree to which evolutionary histories may be congruent among taxa while also highlighting the potential for cryptic diversity within existing species.In the Rocky Mountains, three confamilial stoneflies (Zapada glacier , Lednia tumana , and Lednia tetonica ; Plecoptera, Nemouridae) occupy cold alpine...
Authors
Scott Hotaling, J. Joseph Giersch, Debra S. Finn, Lusha M. Tronstad, Steve Jordan, Larry Serpa, Ronald Call, Clint C. Muhlfeld, David W. Weisrock
Science and Products
Filter Total Items: 21
Specialized meltwater biodiversity persists despite widespread deglaciation Specialized meltwater biodiversity persists despite widespread deglaciation
Glaciers are important drivers of environmental heterogeneity and biological diversity across mountain landscapes. Worldwide, glaciers are receding rapidly due to climate change, with important consequences for biodiversity in mountain ecosystems. However, the effects of glacier loss on biodiversity have never been quantified across a mountainous region, primarily due to a lack of...
Authors
Clint C. Muhlfeld, Timothy Joseph Cline, J. Joseph Giersch, Erich H. Peitzsch, Caitlyn Florentine, Dean Jacobsen, Scott Hotaling
Climate-induced expansions of invasive species in the Pacific Northwest, North America: A synthesis of observations and projections Climate-induced expansions of invasive species in the Pacific Northwest, North America: A synthesis of observations and projections
Climate change may facilitate the expansion of non-native invasive species (NIS) in aquatic and terrestrial systems. However, empirical evidence remains scarce and poorly synthesized at scales necessary for effective management. We conducted a literature synthesis to assess the state of research on the observed and predicted effects of climate change on a suite of 398 aquatic and...
Authors
Jennifer Gervais, Ryan P. Kovach, Adam J. Sepulveda, Robert K. Al-Chokhachy, J. Joseph Giersch, Clint C. Muhlfeld
Global status of trout and char: Conservation challenges in the twenty-first century Global status of trout and char: Conservation challenges in the twenty-first century
Freshwater ecosystems are among the most threatened ecosystems in the world (Richter et al. 1997; Strayer and Dudgeon 2010), and freshwater fishes may now be the most threatened group of vertebrates (Ricciardi and Rasmussen 1999; Vorosmarty et al. 2010; Darwall and Freyhof 2016). Of the 7,300 freshwater fish species globally assessed by the International Union for Conservation of Nature...
Authors
Clint C. Muhlfeld, Daniel C. Dauwalter, Vincent S. D’Angelo, Andrew Ferguson, J. Joseph Giersch, Dean Impson, Itsuro Koizumi, Ryan Kovach, Philip McGinnity, Johannes Schoeffmann, John Epifanio, Leif Asbjørn Vøllestad
Microbial assemblages reflect environmental heterogeneity in alpine streams Microbial assemblages reflect environmental heterogeneity in alpine streams
Alpine streams are dynamic habitats harboring substantial biodiversity across small spatial extents. The diversity of alpine stream biota is largely reflective of environmental heterogeneity stemming from varying hydrological sources. Globally, alpine stream diversity is under threat as meltwater sources recede and stream conditions become increasingly homogeneous. Much attention has...
Authors
Scott Hotaling, Mary E. Foley, Lydia Zeglin, Debra S. Finn, Lusha M. Tronstad, J. Joseph Giersch, Clint C. Muhlfeld, David W. Weisrock
An integrated framework for ecological drought across riverscapes of North America An integrated framework for ecological drought across riverscapes of North America
Climate change is increasing the severity and extent of extreme droughts events, posing a critical threat to freshwater ecosystems, particularly with increasing human demands for diminishing water supplies. Despite the importance of drought as a significant driver of ecological and evolutionary dynamics, current understanding of drought consequences for freshwater biodiversity is very...
Authors
Ryan Kovach, Jason B. Dunham, Robert Al-Chokhachy, Craig Snyder, Erik A. Beever, Gregory T. Pederson, Abigail Lynch, Nathaniel P. Hitt, Christopher P. Konrad, Kristin L. Jaeger, Alan H. Rea, Adam J. Sepulveda, Patrick M. Lambert, Jason M. Stoker, J. Joseph Giersch, Clint C. Muhlfeld
Congruent population genetic structure but differing depths of divergence for three alpine stoneflies with similar ecology and geographic distributions Congruent population genetic structure but differing depths of divergence for three alpine stoneflies with similar ecology and geographic distributions
Comparative population genetic studies provide a powerful means for assessing the degree to which evolutionary histories may be congruent among taxa while also highlighting the potential for cryptic diversity within existing species.In the Rocky Mountains, three confamilial stoneflies (Zapada glacier , Lednia tumana , and Lednia tetonica ; Plecoptera, Nemouridae) occupy cold alpine...
Authors
Scott Hotaling, J. Joseph Giersch, Debra S. Finn, Lusha M. Tronstad, Steve Jordan, Larry Serpa, Ronald Call, Clint C. Muhlfeld, David W. Weisrock