An Island In The Middle
Its strategical location at the Eastern Pacific turns it into a peculiar shelter.
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Photographs by Giuseppe Aguinaga.
Those pelicans are watching the sea to provide themselves some fish food from the sea in La Islilla Beach.
PAITA, Peru - It seems to be a stone-&-sand berg from La Islilla
Beach, a huge natural breakwater keeping a fishers cove on the
southwestern side of La Silla de Paita (The Paita's Chair,
approximately 350 meters or 1150 feet altitude). However, it is a
natural milestone of two big marine ecosystems for the science.
is far the South-American continent just 800 meters or half a mile to 1
kilometer or 0,6 miles of water, and according to the book Piura, Áreas prioritarias para la conservación de la biodiversidad (Piura - Priority Areas For Conserving the Biodiversity), edited by Nature and Culture International (NCI) in 2014, is an extension of the Peruvian desert, an arid land reaching to penetrate into Chile toward the south, and the half of Tumbes Region at the north.
It is about 92
hectares or 227 acres, what allow it to contain loosely two Vatican
Cities. Its highest point is 50 meters or 164 feet, seven times higher
than Paita City, which it depends administratively on, gotten away 20 km or 12 miles to the south.
The Foca Island is an
inexistent point on the global map, but it has a pretty importance in
terms of marine biodiversity conservation worldwide.
It could seem to
be a plateau elevating abruptly out from the sea bottom, judging
the cliffs mostly surrounding it. Its few beaches are mainly
upholstered by sedimentary rocks and boulders.
El Itsmo (The
Itsmus) is in the middle of the island, a sort of cleavage running from
west to east, and the sea bottom is not very deep around it, instead a
prairie of green seaweeds called caulerpas, also reefs and sand bottoms. According to NCI, "tey establish a shelter of the whole undermarine fauna."
is not only at its central coast but apparently on the center of its
coast. Peru-wide, it is the northern island along its whole sea. But
worldwide, it seems to be in the middle of something uch greater.
Yes, it is what looks like, but the science is researching what its real DNA is.
As we told it previously, two big oceanic currents meet in front of Piura,
Humboldt's contributing with Antartic cold water, and El Niño bringing
equatorial warm water on. That causes two ecosystems, respectivelly:
The Cold Sea or Temperate Eastern Pacific Sea, running along Chile
Coast to Punta Aguja (Sechura), and The Tropical Sea or Tropical Eastern Pacific Sea, starting in the Gulf of California (Mexico) and ending in Cabo Blanco (El Alto, Talara).
Due to the
projection itself of South America to the west, precisely in Piura, The
Tropical Sea as well as The Cold Sea do not have a defined dividing
limit, but they mix around in a kind of transition zone between Punta
Aguja and Cabo Blanco, and Foca Island is just in the middle of what is
known as Temperate-Tropical Sea, and also it shares the oriental vertex
of all that transition zone with La Islilla.
In fact, according to NCI, that is the only island across the Eastern Pacific Ocean, located in a zone of that kind.
In other words,
it has the best of Humboldt's and the best of El Niño's. While the
first current is rich in nutrients (plancton) and trends to drown
because of a thermic effect (the cold water is denser because the
molecules are most ccohesive), the warm one locates more at the surface
of the sea, although it do not contribute with much nutrients.
As a result, we
have a combined biodiversity of both ecosystems, although that
determines by the predominance of each current according to the season
of the year (more Humboldt in the winter, more El Niño in the summer).
The most logic explanation to
this transparency is the nutrient-enriched water is actually below this
most tropical one, and deeper.
water of this island, live proper species of the Peruvian Current as
well as species of tropical water, those can be found at the Gulf of
California or Galápagos Islands," NCI points out. And this
riches attracts on the land a varied fauna, even turtles. The bad news
- many ones are in extinction peril or are still unknown by the science.
Also on and over the land, birds such as Humboldt penguin (Spheniscus humboldti), the Peruvian booby (Sula variegata), and the red-legged cormorant (Phalacrocorax gaimardi) have the north boundary of their habitat on the island. The Peruvian storm petrel (Oceanodroma tethys kelsalli), also, has selected it as its few breeding areas.
of these species justify Foca Island to be recognized internationally
as an important area for the birds conservation," NCI stressed out in
2014, so it included that into a proposal for a marine-coastal area of conservation in 2016, with two biospaces of Piura Region and one another of Tumbes Region.
proposal only has favorable opinion of Congress of Peru's Commission of
Andean, Amazonian, and African-Peruvian People, and Ecology and
Environment, but it needs to go up to the whole parliament, then its
promulgation to be requested to the Peru's Presidency.
If that is not
enough, Foca Island is still the home of a scientific controversy about
the origin of the south-American fur Seals (Arctocephalus cf. australis) living there. It is suspected could be the Galápagos fur seal (A. galapagoensis).
The issue is still under investigation and the science only will say us
if it is about the austral species or the tropical species, or maybe a
hybrid that has been adapting to the island.
it, the tourism has been suggested as a compplementary activity to the
fishing already made from La Islilla, what also could make a circuit
with La Silla de Paita, only if it develops into a sustainable way.
Currently, the people who already visited it left pretty fascinated.
The choices, in every sense, are just beginning to explore.
Many of the species living
around Foca Island are in the red list of the International Union for
Conservation of Nature - extinction peril, or threatened.
BREAKING FILE OF FOCA island
North Edge: 5° 04’ S
West Edge: 81° 14’ W /
South Edge: 5° 21’ S
East edge: 81° 09’ W
Lowfin moray(Gymnothorax porphyreus)
Brick seabass (Acanthistius pictus)
Broomtail grouper (Mycteroperca xenarcha)
Peruvian rock seabass (Paralabrax humeralis)
Cortez Angelfish (Pomacanthus zonipectus)
Coquito damsel or coquito sergeant (Nexilosus latifrons)
Acapulco major, Acapulco damselfish or Acapulco gregory (Stegastes acapulcoensis)
Peruvian morwong (Cheilodactylus variegatus)
Giant blenny (Scartichthys gigas)
Gould octopus (Octopus mimus)
Rabbitnose shrimp (Rhynchocinetestypus)
Starfish (Stichaster striatus)
Sunstar (Heliaster helianthus)
Western spinny brettle star (Ophiothrix spiculata)
Green sea urchin (Lytechinus semituberculatus)
Brown sea cucumber (Isostichopus fuscus)
endemic, threatened birds:
Humboldt penguin (Spheniscus humboldti)
Peruvian storm petrel (Oceanodroma tethys kelsalli)
Peruvian pelican (Pelecanus thagus)
Peruvian booby (Sula variegata)
guanay cormorant (Phalacrocorax bougainvillii)
Grey gull (Leucophaeus modestus)
Belcher's gull or bandtail gull (Larus belcheri)
Inca tern (Larosterna inca)
Oystercatcher (Haematopus ater)
Red-legged cormorant (Phalacrocorax gaimardi)
- During the summer, it is possible to watch neo-tropical migrant birds as the ruddy turnstone (Arenariainterpres) and the wandering tattler (Tringa incana).
South-American sea lion (Otariaflavescens)
Humpback whale (Megaptera novaeangliae)
South-American fur seal (Arctocephalus cf. australis)
- Ocassionally, the California sea lion (Zalophus californianus) and some species of dolphins are watched in the sea.
endemic Reptiles of the Peruvian Coast:
Peru Pacific iguana (Microlophus peruvianus)
Central-toed gecko (Phyllodactylus microphyllus)
Green turtle (Chelonia mydas).
Sources: Nature & Culture International / Fishbase / Sealifebase.org / eol.org / UICN
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