Exotic Species News

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  • Climate change unlikely to drive sugar maples north
    on January 13, 2020 at 12:58 pm

    Sugar maples won't be heading north anytime soon, despite climate change, according to a new study.

  • Predicting non-native invasions in Antarctica
    on January 13, 2020 at 12:58 pm

    A new study identifies the non-native species most likely to invade the Antarctic Peninsula region over the next decade. It provides a baseline for all operators in the region to look at mitigation measures.

  • Response to fire impacts water levels 40 years into future
    on January 10, 2020 at 2:38 pm

    Salvage logging and re-seeding a forest after a wildfire helps reduce flooding and returns water levels to normal faster, according to a new article.

  • Novel avian species: 10 new bird taxa in islands of Wallacea
    on January 10, 2020 at 2:38 pm

    A research team found five bird species and five subspecies new to science in three small island groups off Sulawesi, Indonesia. The islands are situated in Indonesia's Wallacea region, an archipelago at the interface between the Oriental and Australian biogeographical realms, named after Sir Alfred Wallace.

  • Moths' flight data helps drones navigate complex environments
    on January 9, 2020 at 7:10 pm

    The flight navigation strategy of moths can be used to develop programs that help drones to navigate unfamiliar environments, report researchers.

  • Fish switch: Identity of mystery invader in Florida waters corrected after 20 years
    on January 8, 2020 at 5:31 pm

    Sometimes scientists make mistakes. Case in point is the chanchita, a South American freshwater fish that has been swimming in Florida's waters for at least two decades, all the while identified by experts as another invader, the black acara.

  • If trees could talk: Using historic log structures to map migration of Europeans, Native Americans
    on January 8, 2020 at 2:03 pm

    Researchers are using tree-ring dating to determine not only when trees were cut down to build historic log buildings in the region but also what the forests were like before European immigrants arrived. This could help researchers shed light on when Native Americans abandoned the area and how their absence altered the landscape.

  • New 'umbrella' species would massively improve conservation
    on January 7, 2020 at 3:49 pm

    The protection of Australia's threatened species could be improved by a factor of seven, if more efficient 'umbrella' species were prioritized for protection, according to new research.

  • Genes controlling mycorrhizal colonization discovered in soybean
    on January 6, 2020 at 7:16 pm

    Like most plants, soybeans pair up with soil fungi in a symbiotic mycorrhizal relationship. In exchange for a bit of sugar, the fungus acts as an extension of the root system to pull in more phosphorus, nitrogen, micronutrients, and water than the plant could on its own.

  • Jaguars could prevent a not-so-great American biotic exchange
    on January 6, 2020 at 7:16 pm

    In eastern Panama, canid species from North and South America are occurring together for the first time. Urban and agricultural development and deforestation along the Mesoamerican Biological Corridor might be generating a new passageway for these invasive species adapted to human disturbance.

  • Climate change and deforestation could decimate Madagascar's rainforest habitat by 2070
    on January 2, 2020 at 7:34 pm

    A study has found that, left unchecked, the combined effects of deforestation and human-induced climate change could eliminate Madagascar's entire eastern rainforest habitat by 2070, impacting thousands of plants, mammals, reptiles, and amphibians that are endemic to the island nation.

  • Climate change not the only threat to vulnerable species, habitat matters
    on December 23, 2019 at 5:28 pm

    Though climate change is becoming one of the greatest threats to the Earth's already stressed ecosystems, it may not be the most severe threat today for all species, say authors of a new report on the effects of deforestation on two lemur species in Madagascar.

  • Overuse of herbicides costing UK economy £400 million per year
    on December 23, 2019 at 5:28 pm

    Scientists have for the first time put an economic figure on the herbicidal resistance of a major agricultural weed that is decimating winter-wheat farms across the UK.

  • Genetic variation gives mussels a chance to adapt to climate change
    on December 20, 2019 at 12:43 pm

    Existing genetic variation in natural populations of Mediterranean mussels allows them to adapt to declining pH levels in seawater caused by carbon emissions. Biologists show that mussels raised in a low pH experimental environment grew smaller shells than those grown at normal pH levels, but the overall survival rate of mussels grown under both conditions was the same.

  • Understanding why songbirds choose their homes
    on December 19, 2019 at 6:29 pm

    New research by biologists uses a new approach to modelling the populations of six species of songbirds in Canada's boreal forest -- and the results show that standard modeling methods may not be accurately capturing species distribution patterns.

  • Human management helps rare plants, butterflies survive hurricane
    on December 18, 2019 at 8:34 pm

    Ongoing habitat management could help prevent hurricane-driven extinctions. A rare Florida plant, the pineland croton, weathered the damage from Hurricane Irma better in plots that were under human management than those left alone.

  • Plant-eating insects disrupt ecosystems and contribute to climate change
    on December 17, 2019 at 5:39 pm

    A new study shows that plant-eating insects affect forest ecosystems considerably more than previously thought. Among other things, the insects are a factor in the leaching of nutrients from soil and increased emissions of carbon dioxide. The researchers also establish that the temperature may rise as a result of an increase in the amount of plant-eating insects in some regions.

  • Agricultural parasite avoids evolutionary arms race, shuts down genes of host plants
    on December 17, 2019 at 2:14 pm

    A parasitic plant has found a way to circumvent an evolutionary arms race with its hosts, allowing the parasite to thrive on a variety of agriculturally important plants.

  • Degraded soils mean tropical forests may never fully recover from logging
    on December 17, 2019 at 12:22 am

    Continually logging and re-growing tropical forests to supply timber is reducing the levels of vital nutrients in the soil, which may limit future forest growth and recovery, a new study suggests. This raises concerns about the long-term sustainability of logging in the tropics.

  • Resident orcas' appetite likely reason for decline of big Chinook salmon
    on December 16, 2019 at 8:14 pm

    Large, old Chinook salmon have mostly disappeared from the West Coast. A new study points to the recent rise of resident killer whales, and their insatiable appetite for large Chinook salmon, as the main driver behind the decline of the big fish.

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