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Population dynamics of sugar maple through the southern portion of its range: implications for range migration

The range of sugar maple (Acer saccharum Marsh.) is expected to shift northward in accord with changing climate. However, a pattern of increased sugar maple abundance has been reported from sites throughout the eastern US. The goal of our study was to examine the stability of the sugar maple southern range boundary by analyzing its demography through the southern extent of its distribution. We analyzed changes in sugar maple basal area, relative frequency, relative density, relative importance values, diameter distributions, and the ratio of sapling biomass to total sugar maple biomass at three spatial positions near the southern boundary of the speciesÕ range using forest inventory data from the USDA Forest Service Forest Inventory and Analysis program over a 20 year observation period (1990Ð2010).

Publication:
Botany
Date:
June 11, 2014

Results from the 2014 New England tapping survey

Results of an annual survey conducted of New England sugarmakers, capturing information on production practices and results, such as types of equipment used, sap sugar content, sanitation practices, and other data.

Date:
June 1, 2014

A New Take on Sap Collection

A new method of gathering sap from sugar maple saplings is being tested.

Publication:
Farming, the Journal of Northeast Agriculture
Date:
June 1, 2014

Microbial Contamination in Maple Syrup

Occasionally, maple syrup becomes contaminated with floating masses or surface mold. Conventional practices have been to discard obvious mold growths, re-boil and then consume the syrup. This practice may be risky, especially with the increasing number of food borne illness outbreaks with other food products and the resulting negative publicity surrounding these outbreaks.

Publication:
Maple Syrup Digest
Date:
June 1, 2014

Crown Release Equals More and Sweeter Sap

Have you ever wondered why open grown trees produce more and sweeter sap than the ones growing close to each other? To answer these questions, I would like to share with you from my 37 years of experience in forest management.

Publication:
Maple Syrup Digest
Date:
June 1, 2014

Energy Efficiency in the Sugarhouse

Boiling syrup is energy intensive, but there are ways for sugarmakers to calcuate and improve their energy use.

Publication:
Farming, the Journal of Northeast Agriculture
Date:
May 1, 2014

How Many Taps?

Tapping guidelines written by state regulators haven’t always kept pace with changes in industry practices or understanding of the science of sap flow, and researchers are working to update tapping guidelines.

Publication:
Farming, the Journal of Northeast Agriculture
Date:
April 1, 2014

Preventing mould in packed maple syrup

Preventing mould in packed maple syrup can be a challenge. Cold-packing syrup usually guarantees mould will grow in bottled containers and can impart off-flavour in the syrup. Maple researchers at the University of Maine and at Carleton University in Ontario are investigating whether current hot packing recommendations require refinement to preserve quality and prevent mould in syrup.

Date:
March 27, 2014