Helen Sofaer, PhD
Helen Sofaer is a Research Ecologist at the Pacific Island Ecosystems Research Center in Hawai‘i.
Science and Products
Filter Total Items: 25
Data on the impacts of garlic mustard from a weeding experiment in Pennsylvania 2006-2016 Data on the impacts of garlic mustard from a weeding experiment in Pennsylvania 2006-2016
Data were collected on the abundance of plants in a 10-year weeding experiment of garlic mustard, located at Trillium Trails Park in Pennsylvania. Garlic mustard was weeded annually to suppress its abundance, and the impacts of garlic mustard were measured based on the response of the plant community to garlic mustard weeding. Because garlic mustard is known to suppress mycorrhizal fungi...
Non-native and synanthropic bird data derived from 2010-2012 Breeding Bird Survey and associated landscape metrics from 2011 NLCD Non-native and synanthropic bird data derived from 2010-2012 Breeding Bird Survey and associated landscape metrics from 2011 NLCD
Locations of and proportional abundance of non-native and synanthropic passerines were extracted from Breeding Bird Survey (BBS) data from 2010-2012. Information characterizing the spatial variation and the associated amount, aggregation, and diversity of developed and agricultural land cover types was extracted from the National Land Cover Datasets of 2011. Data supported analyses in...
Abundance of wetland-dependent birds at Breeding Bird Survey routes and associated land cover and climate information Abundance of wetland-dependent birds at Breeding Bird Survey routes and associated land cover and climate information
Estimation and validation data for site by species matrices used in the publication 'Clustering and ensembling approaches to support surrogate-based species management' by H.R. Sofaer et al. 2019 Diversity and Distributions
Measurements of plant abundance with reference to dominant plants in Illinois wetlands Measurements of plant abundance with reference to dominant plants in Illinois wetlands
Data were collected on plant abundance in Illinois with the goal of determining correlations between the abundance of dominant plant taxa and other plant species.
Breeding Bird Survey songbird occurrences during 1977-1979 and 2012-2014 in conterminous U.S. Breeding Bird Survey songbird occurrences during 1977-1979 and 2012-2014 in conterminous U.S.
Data used in: "Misleading prioritizations from modeling range shifts under climate change" by H.R. Sofaer, C.S. Jarnevich, and C.H. Flather. Breeding Bird Survey data (version 2014.0) for songbirds were summarized over historical (1977-1979) and recent (2012-2014) time periods at routes in the conterminous U.S. Avian occurrence data were combined with information on climate and land...
Data associated with Sofaer and Jarnevich 'Accounting for sampling patterns reverses the relative importance of trade and climate for the global sharing of exotic plants' Data associated with Sofaer and Jarnevich 'Accounting for sampling patterns reverses the relative importance of trade and climate for the global sharing of exotic plants'
These data were analyzed for the publication 'Accounting for sampling patterns reverses the relative importance of trade and climate for the global sharing of exotic plants': Aim: Exotic species distributions reflect patterns of human-mediated dispersal, species climatic tolerances, and a suite of other biotic and abiotic factors. The relative importance of each of these factors will...
Filter Total Items: 44
Invaders at the doorstep: Using species distribution modeling to enhance invasive plant watch lists Invaders at the doorstep: Using species distribution modeling to enhance invasive plant watch lists
Watch lists of invasive species that threaten a particular land management unit are useful tools because they can draw attention to invasive species at the very early stages of invasion when early detection and rapid response efforts are often most successful. However, watch lists typically rely on the subjective selection of invasive species by experts or on the use of spotty occurrence...
Authors
Catherine S. Jarnevich, Peder Engelstad, Jillian LaRoe, Brandon Hays, Terri Hogan, Jeremy Jirak, Ian S. Pearse, Janet S. Prevey, Jennifer Sieraki, Annie Simpson, Jess Wenick, Nicholas Young, Helen Sofaer
SPCIS: Standardized Plant Community with Introduced Status database SPCIS: Standardized Plant Community with Introduced Status database
The movement of plant species across the globe exposes native communities to new species introductions. While introductions are pervasive, two aspects of variability underlie patterns and processes of biological invasions at macroecological scales. First, only a portion of introduced species become invaders capable of substantially impacting ecosystems. Second, species that do become...
Authors
Lais Petri, Evelyn M. Beaury, Jeff Corbin, Kristen Peach, Helen Sofaer, Ian S. Pearse, Reagan Early, Dave Barnett, Inés Ibáñez, Robert K. Peet, Michael Schafale, Thomas Wentworth, James Vanderhorst, David N. Zaya, Greg Spyreas, Bethany A. Bradley
Regional models do not outperform continental models for invasive species Regional models do not outperform continental models for invasive species
Aim: Species distribution models can guide invasive species prevention and management by characterizing invasion risk across space. However, extrapolation and transferability issues pose challenges for developing useful models for invasive species. Previous work has emphasized the importance of including all available occurrences in model estimation, but managers attuned to local...
Authors
Catherine S. Jarnevich, Helen Sofaer, Peder Engelstad, Pairsa Belamaric
Climate matching with the climatchR R package Climate matching with the climatchR R package
Climate matching allows comparisons of climatic conditions between different locations to understand location and species range climatic suitability. The approach may be used as part of horizon scanning exercises such as those conducted for invasive species. We implemented the CLIMATCH algorithm into an R package, climatchR. The package allows automated and scripted climate matching...
Authors
Richard A. Erickson, Peder S Engelstad, Catherine S. Jarnevich, Helen Sofaer, Wesley M. Daniel
Potential cheatgrass abundance within lightly invaded areas of the Great Basin Potential cheatgrass abundance within lightly invaded areas of the Great Basin
Context Anticipating where an invasive species could become abundant can help guide prevention and control efforts aimed at reducing invasion impacts. Information on potential abundance can be combined with information on the current status of an invasion to guide management towards currently uninvaded locations where the threat of invasion is high. Objectives We aimed to support...
Authors
Helen Sofaer, Catherine S. Jarnevich, Erin K. Buchholtz, Brian S. Cade, John T. Abatzoglou, Cameron L. Aldridge, Patrick Comer, Daniel Manier, Lauren E. Parker, Julie A. Heinrichs
INHABIT: A web-based decision support tool for invasive plant species habitat visualization and assessment across the contiguous United States INHABIT: A web-based decision support tool for invasive plant species habitat visualization and assessment across the contiguous United States
Narrowing the communication and knowledge gap between producers and users of scientific data is a longstanding problem in ecological conservation and land management. Decision support tools (DSTs), including websites or interactive web applications, provide platforms that can help bridge this gap. DSTs can most effectively disseminate and translate research results when producers and...
Authors
Peder Engelstad, Catherine S. Jarnevich, Terri Hogan, Helen Sofaer, Ian S. Pearse, Jennifer Sieracki, Neil Frakes, Julia Sullivan, Nicholas E. Young, Janet S. Prevey, Pairsa Nicole Belamaric, Jillian Marie Laroe
Science and Products
Filter Total Items: 25
Data on the impacts of garlic mustard from a weeding experiment in Pennsylvania 2006-2016 Data on the impacts of garlic mustard from a weeding experiment in Pennsylvania 2006-2016
Data were collected on the abundance of plants in a 10-year weeding experiment of garlic mustard, located at Trillium Trails Park in Pennsylvania. Garlic mustard was weeded annually to suppress its abundance, and the impacts of garlic mustard were measured based on the response of the plant community to garlic mustard weeding. Because garlic mustard is known to suppress mycorrhizal fungi...
Non-native and synanthropic bird data derived from 2010-2012 Breeding Bird Survey and associated landscape metrics from 2011 NLCD Non-native and synanthropic bird data derived from 2010-2012 Breeding Bird Survey and associated landscape metrics from 2011 NLCD
Locations of and proportional abundance of non-native and synanthropic passerines were extracted from Breeding Bird Survey (BBS) data from 2010-2012. Information characterizing the spatial variation and the associated amount, aggregation, and diversity of developed and agricultural land cover types was extracted from the National Land Cover Datasets of 2011. Data supported analyses in...
Abundance of wetland-dependent birds at Breeding Bird Survey routes and associated land cover and climate information Abundance of wetland-dependent birds at Breeding Bird Survey routes and associated land cover and climate information
Estimation and validation data for site by species matrices used in the publication 'Clustering and ensembling approaches to support surrogate-based species management' by H.R. Sofaer et al. 2019 Diversity and Distributions
Measurements of plant abundance with reference to dominant plants in Illinois wetlands Measurements of plant abundance with reference to dominant plants in Illinois wetlands
Data were collected on plant abundance in Illinois with the goal of determining correlations between the abundance of dominant plant taxa and other plant species.
Breeding Bird Survey songbird occurrences during 1977-1979 and 2012-2014 in conterminous U.S. Breeding Bird Survey songbird occurrences during 1977-1979 and 2012-2014 in conterminous U.S.
Data used in: "Misleading prioritizations from modeling range shifts under climate change" by H.R. Sofaer, C.S. Jarnevich, and C.H. Flather. Breeding Bird Survey data (version 2014.0) for songbirds were summarized over historical (1977-1979) and recent (2012-2014) time periods at routes in the conterminous U.S. Avian occurrence data were combined with information on climate and land...
Data associated with Sofaer and Jarnevich 'Accounting for sampling patterns reverses the relative importance of trade and climate for the global sharing of exotic plants' Data associated with Sofaer and Jarnevich 'Accounting for sampling patterns reverses the relative importance of trade and climate for the global sharing of exotic plants'
These data were analyzed for the publication 'Accounting for sampling patterns reverses the relative importance of trade and climate for the global sharing of exotic plants': Aim: Exotic species distributions reflect patterns of human-mediated dispersal, species climatic tolerances, and a suite of other biotic and abiotic factors. The relative importance of each of these factors will...
Filter Total Items: 44
Invaders at the doorstep: Using species distribution modeling to enhance invasive plant watch lists Invaders at the doorstep: Using species distribution modeling to enhance invasive plant watch lists
Watch lists of invasive species that threaten a particular land management unit are useful tools because they can draw attention to invasive species at the very early stages of invasion when early detection and rapid response efforts are often most successful. However, watch lists typically rely on the subjective selection of invasive species by experts or on the use of spotty occurrence...
Authors
Catherine S. Jarnevich, Peder Engelstad, Jillian LaRoe, Brandon Hays, Terri Hogan, Jeremy Jirak, Ian S. Pearse, Janet S. Prevey, Jennifer Sieraki, Annie Simpson, Jess Wenick, Nicholas Young, Helen Sofaer
SPCIS: Standardized Plant Community with Introduced Status database SPCIS: Standardized Plant Community with Introduced Status database
The movement of plant species across the globe exposes native communities to new species introductions. While introductions are pervasive, two aspects of variability underlie patterns and processes of biological invasions at macroecological scales. First, only a portion of introduced species become invaders capable of substantially impacting ecosystems. Second, species that do become...
Authors
Lais Petri, Evelyn M. Beaury, Jeff Corbin, Kristen Peach, Helen Sofaer, Ian S. Pearse, Reagan Early, Dave Barnett, Inés Ibáñez, Robert K. Peet, Michael Schafale, Thomas Wentworth, James Vanderhorst, David N. Zaya, Greg Spyreas, Bethany A. Bradley
Regional models do not outperform continental models for invasive species Regional models do not outperform continental models for invasive species
Aim: Species distribution models can guide invasive species prevention and management by characterizing invasion risk across space. However, extrapolation and transferability issues pose challenges for developing useful models for invasive species. Previous work has emphasized the importance of including all available occurrences in model estimation, but managers attuned to local...
Authors
Catherine S. Jarnevich, Helen Sofaer, Peder Engelstad, Pairsa Belamaric
Climate matching with the climatchR R package Climate matching with the climatchR R package
Climate matching allows comparisons of climatic conditions between different locations to understand location and species range climatic suitability. The approach may be used as part of horizon scanning exercises such as those conducted for invasive species. We implemented the CLIMATCH algorithm into an R package, climatchR. The package allows automated and scripted climate matching...
Authors
Richard A. Erickson, Peder S Engelstad, Catherine S. Jarnevich, Helen Sofaer, Wesley M. Daniel
Potential cheatgrass abundance within lightly invaded areas of the Great Basin Potential cheatgrass abundance within lightly invaded areas of the Great Basin
Context Anticipating where an invasive species could become abundant can help guide prevention and control efforts aimed at reducing invasion impacts. Information on potential abundance can be combined with information on the current status of an invasion to guide management towards currently uninvaded locations where the threat of invasion is high. Objectives We aimed to support...
Authors
Helen Sofaer, Catherine S. Jarnevich, Erin K. Buchholtz, Brian S. Cade, John T. Abatzoglou, Cameron L. Aldridge, Patrick Comer, Daniel Manier, Lauren E. Parker, Julie A. Heinrichs
INHABIT: A web-based decision support tool for invasive plant species habitat visualization and assessment across the contiguous United States INHABIT: A web-based decision support tool for invasive plant species habitat visualization and assessment across the contiguous United States
Narrowing the communication and knowledge gap between producers and users of scientific data is a longstanding problem in ecological conservation and land management. Decision support tools (DSTs), including websites or interactive web applications, provide platforms that can help bridge this gap. DSTs can most effectively disseminate and translate research results when producers and...
Authors
Peder Engelstad, Catherine S. Jarnevich, Terri Hogan, Helen Sofaer, Ian S. Pearse, Jennifer Sieracki, Neil Frakes, Julia Sullivan, Nicholas E. Young, Janet S. Prevey, Pairsa Nicole Belamaric, Jillian Marie Laroe