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Search for invasive species returned 35 results
  • Adventure

    Log entries (13)

    Les envahisseurs de Kerguelen

    Les archipels des Kerguelen de Crozet ainsi que les îles St-Paul et Amsterdam sont parmi les endroits les plus isolés au monde. Ces îles se trouvent à plus de 3500 km au sud de l’île de la Réunion. Sur ces terres désolées, où les averses de pluie et de neige sont fréquentes, la vie y est dure.

    Great efforts for small animals

    Panama, where we currently find ourselves, burgeons with a rich diversity of plant and animal life, along with many protected areas and nature parks. Panama’s tropical rainforest is also the habitat of nearly 200 species of frog, most just a few centimetres long and highly colourful.

    Silent forest

    In 2003, Edgardo Griffith, a respected herpetologist and director of the El Valle Amphibian Conservation Center in Panama, loved to sit by a stream in the rainforest and listen to the chorus of frog calls. It brought him great happiness.

    Bleach solution

    It’s an unprecedented rescue operation, a sort of Red Cross for frogs and toads. The last two log entries will have enlightened you on the modus operandi of the chytrid, a deadly fungus that attacks our beloved frogs. I’m sure you’ll agree that frogs have always held a special place in our bestiaries and our imaginations. I’m reminded of a famous French song by Félix Leclerc you may have heard of, “Hymne au printemps” (Hymn to Spring), which ends with the words et les crapauds chantent la liberté (and the toads sing of freedom). Here in Panama and elsewhere around the world, that last line is no longer accurate. Toads and frogs no longer sing of liberty. In a sense, many scientists have now become paramedics of the jungle, working to capture and treat them.

    Dilemma

    Put yourself in a scientist’s shoes. You’re a herpetologist. You’re working in the field to protect and save amphibians. You have two species of frog, and only 50 individuals of each remain in the wild. An array of factors (grants, volunteers, available equipment, etc.) mean you can only save one species. What do you do? What criteria do you base your decision on?

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  • Biodiversity

    Species (8)

    Laysan Albatross

    Common name: Laysan Albatross
    Scientific name: Phoebastria immutabilis
    Length: 81 cm, wingspan of 2 m
    Weight: 3 kg (6.5 lb) for males and 2.5 kg (5.5 lb) for females
    Population: 1.2 million
    Distribution: throughout the North Pacific, nests primarily in the Hawaiian Islands, where there are 16 nesting sites
    Issue: lead poisoning and plastic pollution, invasive species
    IUCN Red List status: near threatened

    Black-footed Albatross

    Common name: Black-footed Albatross
    Scientific name: Phoebastria nigripes
    Length: 68 to 74 cm, wingspan of 190 to 220 cm
    Weight: 3.4 kg (7.4 lb) for males and 3 kg (6.6 lb) for females
    Population: approximately 130,000
    Distribution: nests mainly on Midway Atoll, Laysan, the French Frigate Shoals in the Northwestern Hawaiian Islands, and in the Bonin Islands
    Issue: pollution, invasive species, plastic ingestion
    IUCN Red List status: endangered

    White Tern

    Common name: White Tern
    Scientific name: Gygis alba
    Length: 31 cm
    Weight:
    Population: abundant
    Distribution: tropical islands in the Pacific and Indian oceans
    Issue: invasive species
    IUCN Red List status: least concern

    Blue Iguana

    Common name: blue iguana
    Scientific name: Cyclura nubila lewisi
    Length: 1.5 metres from head to end of tail
    Weight: 11 kg or 25 lb
    Population: over 650 individuals (born in captivity)
    Distribution: Grand Cayman Island, in the Caribbean
    Issue: extremely rare and vulnerable due to habitat degradation
    IUCN Red List status: critically endangered

    Laysan Duck

    Common name: Laysan Duck
    Scientific name: Anas laysanensis
    Length: 41 cm
    Weight: 435 g (1 lb)
    Population: approximately 1,000 individuals
    Distribution: Midway and Laysan atolls, Northwestern Hawaiian Islands
    Issue: reduced and fluctuating population in an extremely limited habitat, invasive species
    IUCN Red List status: critically endangered

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    Threatened Species (8)

    Darwin’s Fox

    Common name: Darwin’s Fox
    Scientific name: Pseudalopex fulvipes
    Length: 48 to 60 centimeters, with a tail of 17 to 26 centimeters
    Weight: 2 to 4 kg (4.4 to 8.8 lb)
    Population: Unknown, but estimated to be declining
    Distribution: On Chiloé Island, in Chile, and on a fragment of mountains in the Nahuelbuta National Park, a little bit north
    Issue: Conflicts with dogs (diseases and predation)
    IUCN Red List status: Critically endangered

    Stitchbird

    Common names: Stitchbird
    Scientific name: Notiomystis cincta
    Size: 18 cm
    Weight: 36.5 g (male); 30 g (female)
    Population: 4,500 individuals
    Distribution: throughout the North Island plus Great Barrier, Little Barrier and Kapiti Islands.
    Issues: Invasive species
    IUCN Red List Status: vulnerable

    Tasmanian devil

    Common name: Tasmanian devil
    Scientific name: Sarcophilus harrisii
    Length: 50 to 80 centimeters
    Weight: 5.5 to 12 kg (12 to 26 lbs.) for males, 4 to 8 kg (9 to 17.5 lbs.) for females
    Population: Approximately 20,000 individuals
    Distribution: In forests in Tasmania, an island located south of Australia
    Issues: Diseases (Devil Facial Tumour Disease – DFTD), road accidents, human persecution, exogenous species (dog, fox), low genetic diversity
    IUCN Red List status: Endangered

    Kakapo

    Common names: Kakapo, owl parrot
    Scientific name: Strigops habroptila
    Length: 64 centimeters
    Weight: 3 to 4 kg (6.5 to 9 lbs.)
    Population: Approximately 130 individuals
    Distribution: Southern Southern Alps, on South Island in New-Zealand and on Stewart Island, located south
    Issues: Historically, overexploitation, invasive species (rats, cats, dogs, ferrets), diseases
    IUCN Red List status: Critically endangered

    Maned Wolf

    Common name: Maned Wolf
    Scientific name: Chrysocyon brachyurus
    Length: 125 to 130 cm
    Weight: 20 to 23 kg (4.5 to 5 lbs.)
    Population: Estimated in 2005 at approximately 23,600 individuals
    Distribution: In grasslands and shrub forests in Brazil, Bolivia, Paraguay and Argentina
    Issue: Habitat destruction, population isolation, illnesses caused by domestic dogs
    IUCN Red List status: Near threatened

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  • Education

    Educational activity bank (5)

    Threatened Species

    Create a PowerPoint slideshow based on an English text on threatened species and present it to the class.

    Biodiversity Hotspots

    Teams research a topic on the Internet and present their results to the rest of the class.

    Two great kingdoms

    Classify plants and animals in order to better understand what biodiversity is.

    What is biodiversity?

    Guided discussion to understand what biodiversity is.

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    Projects Adopt a threatened species (1)

    School Campus Trash Clean up

    Our class will canvas the whole campus, which includes 3 schools, the administration building, various sports fields and pick up the trash. Any materials that can be recycled will be separated and taken to the recycling center.