Publications by authors named "Jeremy S Johnson"
Climate change is a major evolutionary force that can affect the structure of forest ecosystems worldwide. Red spruce ( Sarg.) has recently faced a considerable decline in the Southern Appalachians due to rapid environmental change, which includes historical land use, and atmospheric pollution.
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- * The Group on Earth Observations Biodiversity Observation Network (GEO BON) developed Essential Biodiversity Variables (EBVs), which are key metrics to standardize biodiversity data and help evaluate geographical distribution and changes over time.
- * The text focuses on implementing Genetic Composition EBVs, assessing genetic variation within species, and proposes four specific Genetic EBVs while discussing their relevance and the processes needed for effective data generation and archiving.
All native North American white pines are highly susceptible to white pine blister rust (WPBR) caused by . Understanding genomic diversity and molecular mechanisms underlying genetic resistance to WPBR remains one of the great challenges in improvement of white pines. To compare major gene resistance (MGR) present in two species, southwestern white pine () and limber pine (.
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- Dispersal is important for plants, but we still don’t fully understand how it affects their survival and spread.
- It’s tough to predict how seeds move around because it depends on many different factors like the environment and time.
- To really get better at studying seed dispersal, we need to consider all the different ways plants grow and change over time, and work together across different fields of science.
Article Synopsis
- The ability of plants to distribute and thrive globally is influenced by their movement, characterized by what's known as the total dispersal kernel (TDK), which encompasses all dispersal methods including primary and secondary factors.
- Understanding the roles of different dispersal vectors in the TDK is crucial for predicting how plants will respond to environmental changes and their population spread.
- The current research highlights challenges in accurately measuring and modeling TDKs, suggesting a systematic approach that integrates empirical data with modeling techniques to better predict plant dispersal outcomes and establishment success.
When climatic or environmental conditions change, plant populations must either adapt to these new conditions, or track their niche via seed dispersal. Adaptation of plants to different abiotic environments has mostly been discussed with respect to physiological and demographic parameters that allow local persistence. However, rapid modifications in response to changing environmental conditions can also affect seed dispersal, both via plant traits and via their dispersal agents.
View Article and Find Full Text PDFPremise Of The Study: Untangling alternative historic dispersal pathways in long-lived tree species is critical to better understand how temperate tree species may respond to climatic change. However, disentangling these alternative pathways is often difficult. Emerging genomic technologies and landscape genetics techniques improve our ability to assess these pathways in natural systems.
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