CUBA’S ECOSYSTEMS
From the
mountains to the sea
Joaquín Rivery Tur
The sacred
books of the Maya say that the gods made human
beings of corn, asserting, in essence, that people
are shaped by their natural environment.
Coral
reefs play an important ecological role.
Time has shown
this to be a valid principle. Living things and
their environment are so closely tied that the
concept of ecological systems has emerged, with
different conditions leading to the development of
different life forms.
Cuba is a
splendid tropical archipelago, with a variety of
ecosystems ranging from the seabed to mountain
summits. The islands natural extremes have impacted
the nation’s history and left their mark culturally.
The island’s
natural diversity is first apparent upon arriving by
sea, and continues to offer surprises as one travel
toward ancient and modern interior cities, through
savannahs and mountains. This diversity thrives in
the subsoil, runs through jungles, while the
country’s islets and cays are of infinite interest
to the curious, tourists, geographers, speleologists,
geologists, biologists…
The waters
which surround Cuba are prodigious, immortalized,
along with their swordfish, by Ernest Hemingway in
his sagas. Its beaches of fine sand and bright sun
are legendary.
UNDER THE WATER
Cuba’s
reefs are colored with every conceivable hue.
Those who
venture below the surface of coastal waters in
search of hidden marvels discover a universe of
coral reef life in perpetual motion, in both shallow
and deep areas of the island’s shelf. Thriving here
as buried treasure are communities centered around
giant calcified corals, or reefs of several variants
including bars and promontories, in perfect
symbiosis with fish, seaweed, sponges, anemones,
tunicates, mollusks and crustaceans. A kingdom of
color located along the country’s 3,200 kilometer
perimeter.
Who is not
amazed by the beauty of a coral reef, where nature
appears to have used every color on her palette?
Coral polyps have created this fantastic world which
serves very important ecological purposes, such as
defending the coastline from hurricane damage;
providing habitat for an enormous number of marine
species; and producing the fine sand for which
Cuba’s beaches are famous.
Cuba’s
principal island is ringed by more than 4,000 cays
and islets which boast their own unique ecosystems.
Many are pristine and uninhabited, while others have
been developed for tourism, making an important
contribution to the nation’s economy. Among the
archipelagos most visited are the Canarreos,
Jardines de la Reina, the Colorados and Jardines del
Rey.
A
fantastic rocky world.
Beaches,
mangroves and wetlands have created a border between
sea and land. These ecosystems are inhabited by a
great variety of birds, and feature several species
of mangroves, shoreline lagoons, estuaries, fresh
water springs and swamp woodlands.
The largest of
these wetland ecosystems – the most expansive in all
of the Caribbean - is the Ciénaga de Zapata,
designated a UNESCO World Heritage Site. Also unique
are the Lanier wetlands on the Isle of Youth, and
the Cauto River Delta’s Birama.
The Ciénaga de
Zapata is home to Crocodylus rhombifer,
an endemic Cuban crocodile, and two bird
species with very reduced habitats: a rail known as
the gallinuela de Santo Tomás (Cyanolimnas
cerverai) and the wren Ferminia cerverai.
As a result of
the island’s karst topography, a large number of
caves can be found in mountainous regions, and in
some flat areas, making Cuba a paradise for
speleologists. The western province of Pinar del
Río, in particular, has an extensive cave system. A
large gallery in its central mountains contains some
of the world’s tallest stalagmites, and Caguanes
National Park, located on the province’s central
plains, is well-known for the length of its caves.
MOUNTAINS &
PLAINS
The language
used to describe nature’s work in the interior of
the island is much more straight-forward. Found on
most of the main island’s terra firma are two
well-defined ecosystems: mountains and plains.
The plains are
more extensive, and have historically undergone the
most changes at the hands of human beings, basically
for agricultural and livestock farming purposes.
Cuba’s plains
are, however, not all the same geologically. There
are two distinctive types found along the coastline
before reaching the mountains: limestone flatlands
and marine terraces. Examples of the first are the
Guanahacabibes Peninsula and the Isle of Youth’s
southern plains.
Marine terraces
are striking elements of Cuba’s topography, and
among the best-preserved in the world, reaching
their largest proportions in Maisí (Cuba’s
easternmost point) and Cabo Cruz, on the western
slope of the Sierra Maestra.
These
formations have as many as 24 steps, with a steep
elevation gain of 80 to 100 meters.
It is believed
that the original Arawac inhabitants of the island,
locally known as Tainos, arrived in the area of
Maisí, and moved west toward the area populated by
the Siboney. There are enough archaeological sites
remaining on the weather-beaten terraces to support
the hypothesis that this was precisely where many of
the island’s indigenous people landed, long before
the Spanish conquistadores.
From Maisí,
along the northern coast, lie the terraces labeled
the Nipe-Sagua-Baracoa group, home to virgin
woodlands, clear rivers and some of the greatest
biodiversity in the Caribbean. The Cuchillas del Toa
Biosphere Preserve and Alejandro de Humboldt
National Park are located here.
The Sierra
Maestra are the mountains running perpendicular to
the southern coastline of Cuba’s eastern provinces.
Located here are Desembarco del Granma and Turquino
National Parks. The guerrilla struggle led by
Comandante en Jefe Fidel Castro, which defeated the
U.S. supported Fulgencio Batista dictatorship, took
place for the most part within these steep mountains
and woodlands.
Farther west,
in the center of the island, are the Guamuhaya or
Escambray mountains, the most affected by human
activity among the island’s four important ranges.
Lastly, in the
far west is the Guaniguanico range, with its
singular mogotes, isolated hillocks which rise above
the flat floor of the Viñales Valley, where the
Sierra del Rosario Biosphere preserve is located.
The last
element of Cuban ecosystems which must be mentioned
is undoubtedly the nation’s people, committed to
preserving the country’s natural, historical and
cultural heritage.
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