Treesearch

Polyploidization is becoming an increasingly important subject in ecology and invasion biology. To date, the role of polyploidy in the success of species invasions remains unclear. Here, we explore the associations between ploidy levels and seed size, reproductive mode, life form, time after introduction and range size of non-native plants introduced to North America, and whether polyploidization is related to invasion success.Using data on 1804 non-native plant species in continental North America with information on chromosome numbers, we conducted comparative, correlation and regression...

Previous studies have compared various eco‐physiological aspects among C 3 , C 4 , and Crassulacean Acid Metabolism (CAM) plants, mostly using native species. The variation in key genetic and life‐history traits and their distribution among non‐native plants with the three photosynthetic pathways remains poorly understood. Here, we examine whether the photosynthetic pathways of non‐native plants in North America are linked to several major species traits and their current distributions. Location: North America.We collate genetic and life‐history data on chromosome number (ploidy levels),...

The U.S. Department of Agriculture (USDA), Forest Service, Forest Inventory and Analysis (FIA) program provides this resource update yearly as an overview of forest resources in South Dakota. These estimates are derived from field data collected across a systematic network of fixed-radius forest monitoring plots located on both public and private land. New updates are provided annually as a subset of plots within the State are remeasured. Each year, field crews visit and measure a subset of all FIA plots across the entire State (the size of the subset varies by State and year). Combining...

This report describes operational fire spread potential forecasts for the Northwest and Northern Rocky Mountain regions of the United States. We used satellite thermal detection data to estimate daily area burned from 547 wildfires that burned between 2012-2021. Using weather and soil moisture data corresponding to the day and location of each fire, we developed simple linear and logistic regression models estimating daily fire growth and potential for fire spread greater than 70 acres. These models are used to create daily prediction grids for the current date and for a 2-day forecast...

A central goal of carbon (C) management and a critical outcome of sustainable land stewardship is reducing greenhouse gas (GHG) emissions from agriculture, forestry, and other land uses. Integrating GHG considerations into management can take many forms, but C credit markets are increasingly providing sources of private capital to offset the often high costs of stewardship. In Hawaiʻi, participation in voluntary C credit markets and the establishment of jurisdictional compliance C markets are constrained by a lack of institutional capacity, successful demonstrations, and high-quality data,...

1. Stewardship is broadly defined as ‘universal responsibility of humanity to care for the planet, to ensure that it can continue to provide the essential natural resources for life’. Stewardship practices shape ecosystems, create diverse biocultural landscapes, and can enhance the productivity, availability and health of plants used by Indigenous Peoples for traditional foods, fibres and medicines.2. In this paper, we argue that care is one key component that differentiates Indigenous stewardship from other forms of resource management and has the potential to cross cultural and institutio...

The U.S. Department of Agriculture (USDA), Forest Service, Forest Inventory and Analysis (FIA) program provides this resource update yearly as an overview of forest resources in Connecticut. These estimates are derived from field data collected across a systematic network of fixed-radius forest monitoring plots located on both public and private land. New updates are provided annually as a subset of plots within the State are remeasured. Each year, field crews visit and measure a subset of all FIA plots across the entire State (the size of the subset varies by State and year). Combining...

Timber Product Output (TPO) is a component of FIA’s National Resource Use Monitoring (NRUM) program aimed at gathering and reporting information on industrial and non-industrial uses of roundwood. Data are gathered through annual surveys of primary wood processing facilities and aggregated and reported at the county and/or state level. Data and more information about NRUM and TPO can be found at the National Resource Use Monitoring page: https://research.fs.usda.gov/programs/nrum .

It may sound simple, but water doesn’t burn. Techniques for river and stream restoration, known as process-based restoration (PBR), store more water on the land, which can increase fire resilience and bolster fuel treatments. PBR applied in stream corridors, meadows, and valley bottoms can quickly and cost-effectively increase surface water and groundwater by utilizing non-merchantable timber and slash to raise water tables and increase soil moisture. Integration of watershed restoration during fire and fuels planning can strengthen suppression-control features such as Potential Operational...

The critical zone (CZ), extending from the vegetation canopy to the base of weathered material or depth of groundwater, hosts coupled hydrologic, geochemical, and biological interactions that regulate soil health, water resources, and ecosystem sustainability. The subsurface CZ can extend tens to hundreds of metres below the surface and is largely inaccessible, except in happenstance exposures from quarries or road cuts through mountain hillsides. Drilling and subsequent borehole sampling, monitoring, and imaging reveal the importance of the deep subsurface for CZ evolution and function....