Nature
Related Web Activities
(This
1253rd Buffalo Sunday News column was
first published on March 29, 2015.)
It should be clear to everyone that access
and delivery of information has undergone a greater change in the past two
decades than in all of previous human history. You need only consider the
effect on such things as maps and charts, dictionaries and thesauruses,
encyclopedias and atlases as evidence of this amazing change. Today all of
those information sources and many more are accessible not only through iPads and computers but even from little quarter-pound cell
phones.
Education too is being changed and an
aspect of those changes that is available to everyone at no cost is specialized
coursework in MOOCs, that acronym representing
Massive Open Online Courses; and webinars, which are usually only single
sessions. Webinars is a portmanteau word for web-based seminars: they may seem
more threatening (will they call on me?) but are not; you can, however, ask
questions of the session leaders.
Major universities like Yale and Stanford
offer MOOCs, often carrying college credit. Listings
appear at www.coursera.org/courses. Many relate to
natural history; there are, for example, 113 biology and life sciences courses.
A series of monthly webinars that I have
found very interesting are those of ForestConnect.
Run by Peter Smallidge, extension forester at Cornell
University, they address a variety of silviculture
problems of special interest to woodland owners. These are available through www2.dnr.cornell.edu/ext/forestconnect, and past sessions are collected on YouTube.
Some interesting recent webinars in this
series include "Why do trees grow where they do?", "Your woodlot
as a wildlife habitat and source for biodiversity", "Ecology and
management of American beech", and "Ecology and Management of Asian
Long-Horned Beetle in Rural Woodlands".
Of special interest in this region is a MOOC in which I have been participating titled
"Changing Weather and Climate Change in the Great Lakes Region." The
course instructors are Steve Ackerman, Professor of Atmospheric & Oceanic
Sciences at the University of Wisconsin where the course is based, and Margaret
Mooney, Director of Education and Public Outreach for the Cooperative Institute
for Meteorological Satellite Studies at the university.
The course lectures are in four units
associated with the seasons. The first, "Winter", called attention,
as you might expect, to our recent western New York snow events. I have,
however, found "Spring" even more interesting and applicable to our
situation. Unfortunately, I also find some of its forecasts threatening.
But first the good news. Our average
annual temperature after 1980 is between 1.0 and 1.5 degrees greater than the
30 year period before 1980. As a result, our growing season, the time
difference between the average last frost date in the spring and the first
frost date in the fall, has increased for our region a remarkable ten days over
that same time period.
Those changes have, however, a downside
as well. As Ackerman says, "If you are a home gardener, you probably like
the idea of a longer growing season but with the warmer temperatures and with
an associated dry spell the plants are more stressed. Also the longer growing
season is not only for our crops but also for invasive species, the weeds we
fight and many of the plants we are allergic to such as ragweed."
What Ackerman does not mention is the
possibility that we will lose some plants that thrive only in northern climate.
One species so threatened is the maple tree that provides us that wonderful
syrup and those lovely fall colors.
Precipitation represents another concern.
We have seen very little change in total springtime rainfall, our Southern Tier
actually experiencing a slight decrease. When we consider the change in annual
rainfall, however, the picture is quite different. Together with the rest of
the New England States, we are now receiving 3-7 inches more precipitation.
Add to this Ackerman's concern about the
unequal distribution of our springtime rainfall by considering thunderstorms,
brief periods characterized not only by lightning but also heavy rain. These
are the storms that sometimes lead to flooding from overstressed storm sewers.
They are also the times when most of our rain falls between very dry periods.
Here we average about six thunderstorms each spring and these storms appear to
be increasing in the Great Lakes region. Perhaps most threatening about the
most serious of these events (the heaviest 1%) is the fact that, since 1958
they have increased by 71% in the northeast.-- Gerry Rising