Most biologists are of the opinion that common reed,
which scientists know as Phragmites
australis, has become an aggressive and towering pest
in our wetlands, producing impenetrable stands, displacing
beneficial wetland plants and providing little food or shelter
value to wildlife. Others, such as Richard Kane of the New
Jersey Audubon Society, consider it a host for numerous
resident birds such as the marsh wren and other neo-tropical
migratory passerines, bitterns, night-herons, grebes, ibises,
egrets, ducks, geese, and rails, including State threatened
and endangered species and rare breeders in northeastern
New Jersey.
It is most certainly true that Phragmites australis supports populations of these birds at the Hackensack
Meadowlands; we have seen them there, finding food and cover
among the reeds. But questions remain: is Phragmites
native to the Northeast region? A study of tidal marsh history
in southeastern Connecticut, found Phragmites rhizomes older than 3,000 years
buried in the substrate. Cores from a site on the south
shore of Long Island, New York revealed a transitional predominance
of Phragmites australis around 1700 AD. Recently, Kristin Saltonstall
at Yale University documented 11 varieties of common reed
native to North America and 27 worldwide, including the
invasive haplotype M, likely the one aggressively expanding
in Atlantic coast wetlands. Haplotype M was found in all
of Saltonstall’s sampling sites in New Jersey, including
one near the Vince Lombardi rest stop off Interstate 95
in the Meadowlands.
Can the much-noted spread of Phragmites australis at the Hackensack Meadowlands be attributed to
environmental changes of an anthropogenic nature? Well,
eight percent of the U.S. population lives within a 50-mile
radius from the heart of these wetlands. Prior to European
colonization, the Hackensack Meadowlands sustained healthy
and extensive stands of Atlantic white-cedar (Chamaecyparis thyoides), but nowadays only a few waterlogged stumps
remain. Later, four reservoirs were built upstream to hold
back 17 billion gallons of water for human use, limiting
the flow of freshwater and causing tidal salt-water intrusions
in these wetlands. Not all plant species coexist well with
humans, but over the last 100 years, our nemesis / friend
has spread like wildfire in the path of our developments,
channels, ditches, dams, dikes, and pollution. Perhaps we
should not confuse the shadows of reed stands with our own.
Does the rest of the world share our view of Phragmites? Various cultures use it for
food, forage, and fertilizers, and make musical instruments,
ornaments, toys, bags, baskets, sandals, clothing, rafts,
mats, snares, screens, partitions, thatched roofs, pens,
and paper with it. Medicinally, Phragmites is used in midwifery for postpartum recovery, as an emetic
(vomit-inducing), as a decoction in treating diarrhea and
related ailments, as an analgesic (pain-relieving), as an
expectorant (clearing of the throat and lungs), and in splinting.
Some even hail it as a symbol in religious ceremonies and
in heraldry. Phragmites
australis is so valued that sustainable reed harvesting
is a concern in most of Europe today.
Could then “Phrag”
have any redeeming qualities to us other than the one highlighted
by Richard Kane? How about phyto-remediation, the use of
plants to remove contaminants from the environment? For
many years, the Hackensack River was so polluted that fish
could not survive. Although in recent years we have applied
better pollution-control measures and fish have made a comeback,
grievous contaminant problems still persist in the river.
For phyto-remediation in the Hackensack Meadowlands, Phragmites
is very efficient in trapping large amounts of contaminants,
primarily through its root system. Bacteria and fungi in
the Phragmites
rhizosphere use nitrogen, phosphorus, hydrocarbons, creosote,
pesticides, insecticides, surfactants, solvents, and sewage
as sources of energy and carbon. Phragmites
also retains and buries large amounts of metals, such as
chromium, copper, lead, and zinc, and is considered an excellent
plant in wastewater treatment systems.
Although an intrusive plant in the southern coastal
plain of New Jersey, Phragmites provides important
wetland functions and values in the northeastern coastal
areas of the State. Given the degraded conditions in the
Hackensack Meadowlands, Phragmites may be benefiting
many fish and wildlife resources as we strive to improve
our relationship with nature and restore the natural functioning
ecosystem of this area.