Regional-Scale Relationships of Leaf Area Index to Specific Leaf Area and Leaf Nitrogen Content

Specific leaf area (SLA) is an important link between vegetation water and carbon cycles because it describes the allocation of leaf biomass per unit of leaf area. Several studies in many vegetation types have shown that canopy SLA is closely related to canopy leaf nitrogen (N) content and photosynthetic capacity. SLA increases as light is attenuated by leaf area down through a plant canopy. It therefore follows that across an individual biome the spatial patterns in canopy—average SLA and leaf N content should be significantly correlated with the spatial patterns in leaf area index (LAI) and canopy transmittance. In this paper, we show that the LAI across the Oregon transect is closely related to canopy—average SLA (R2 = 0.82) and leaf N content on a mass basis (R2 = 0.80). Canopy—average leaf N per unit area is highly correlated to canopy transmittance (R2 = 0.94) across the transect. At any given site, canopy—average SLA and leaf N per unit area do not vary significantly, either seasonally or between different codominant species occupying the same site. The results of this study suggest that the spatial distribution of canopy—average SLA and leaf nitrogen content (and perhaps canopy photosynthetic capacity) can be predicted across biomes from satellite estimates of LAI

Steady-state activation and modulation of the synaptic-type α1β2γ2L GABAA receptor by combinations of physiological and clinical ligands

The synaptic α1β2γ2 GAB

Paddlefish production : opportunities for Missouri pond and lake owners (2007)

New 7/07/3M

Growing Missouri’s aquaculture industry : business models

Designed for aquaculture entrepreneurs, this report provides business model examples to consider before building an aquaculture operation in Missouri. Today, Missouri has a diverse aquaculture industry composed of businesses serving many different customers and market channels. Varied topography and groundwater availability have guided existing operation locations. Mild winters in the southeast region of the state provided certain aquaculture pioneers with a more favorable production season than the season found in other Missouri areas.Joe Horner (State Specialist, Agricultural Business and Policy, MU Extension), Drew Kientzy (Research Program Analyst, University of Missouri), Ryan Milhollin (State Specialist, Agricultural Business and Policy, MU Extension), Robert Pierce (Associate Extension Professor, Fisheries and Wildlife, MU Extension), David Brune (Agricultural Engineering Professor, University of Missouri), Alice Roach (Senior Research Associate, University of Missouri), Mallory Rahe (State Specialist, Agricultural Business and Policy, MU Extension)New 7/2023Includes bibliographical reference

Growing Missouri’s aquaculture industry : needs assessment

Missouri’s aquaculture industry contains many small but diverse businesses, based on responses from 20 active businesses that participated in a 2023 aquaculture needs assessment survey. Those businesses represented 17 counties, and the survey had an estimated 70% response rate. The average respondent was a small business with seven employees that had been in business for 39 years. Respondents said they primarily use ponds or flow-through raceways and produce nearly eight different aquaculture species on average. In total, respondents produced 46 different species in 2022. Bluegill and largemouth bass were the two most common. They each contributed between 21% and 25% of total business sales.Mallory Rahe (State Specialist, Agricultural Business and Policy, MU Extension), Laura Gordon (Program Coordinator II, Agricultural Business and Policy, MU Extension), Ryan Milhollin (State Specialist, Agricultural Business and Policy, MU Extension), Alice Roach (Senior Research Associate, Division of Applied Social Sciences), Joe Horner (State Specialist, Agricultural Business and Policy, MU Extension), Robert Pierce (Associate Extension Professor, Fisheries and Wildlife, MU Extension), David Brune (Agricultural Engineering Professor, University of Missouri), Drew Kientzy (Research Program Analyst, University of Missouri)New 6/202